Annotation of dgamelaunch-openbsd/virus.c, Revision 1.1
1.1 ! rubenllo 1: /* vi: set sw=8 ts=8: */
! 2: /*
! 3: * virus - vi resembling utility skeleton - based on
! 4: * tiny vi.c: A small 'vi' clone (from busybox 0.52)
! 5: *
! 6: * Copyright (C) 2001 - 2003 Stefan Koerner <ripclaw@rocklinux.org>
! 7: * Copyright (C) 2000, 2001 Sterling Huxley <sterling@europa.com>
! 8: *
! 9: * This program is free software; you can redistribute it and/or modify
! 10: * it under the terms of the GNU General Public License as published by
! 11: * the Free Software Foundation; either version 2 of the License, or
! 12: * (at your option) any later version.
! 13: *
! 14: * This program is distributed in the hope that it will be useful,
! 15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
! 16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 17: * GNU General Public License for more details.
! 18: *
! 19: * You should have received a copy of the GNU General Public License
! 20: * along with this program; if not, write to the Free Software
! 21: * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
! 22: */
! 23:
! 24: #include "config.h"
! 25:
! 26: char *vi_Version = "0.0.6+dgamelaunch " PACKAGE_VERSION;
! 27:
! 28: /*
! 29: * To compile:
! 30: * gcc -Wall -Os -s -o vi virus.c
! 31: * strip vi
! 32: */
! 33:
! 34: /* this was in here from busybox, will sort out later FIXME
! 35: * Things To Do:
! 36: * EXINIT
! 37: * $HOME/.exrc and ./.exrc
! 38: * add magic to search /foo.*bar
! 39: * add :help command
! 40: * :map macros
! 41: * how about mode lines: vi: set sw=8 ts=8:
! 42: * if mark[] values were line numbers rather than pointers
! 43: * it would be easier to change the mark when add/delete lines
! 44: * More intelligence in refresh()
! 45: * ":r !cmd" and "!cmd" to filter text through an external command
! 46: * A true "undo" facility
! 47: * An "ex" line oriented mode- maybe using "cmdedit"
! 48: */
! 49:
! 50: //---- Feature -------------- Bytes to immplement
! 51: #define vi_main main
! 52: #define BB_FEATURE_VI_COLON // 4288
! 53: #define BB_FEATURE_VI_YANKMARK // 1408
! 54: #define BB_FEATURE_VI_SEARCH // 1088
! 55: // #define BB_FEATURE_VI_USE_SIGNALS // 1056
! 56: #define BB_FEATURE_VI_DOT_CMD // 576
! 57: #define BB_FEATURE_VI_READONLY // 128
! 58: //#define BB_FEATURE_VI_SETOPTS // 576
! 59: #define BB_FEATURE_VI_SET // 224
! 60: #define BB_FEATURE_VI_WIN_RESIZE // 256 WIN_RESIZE
! 61: // To test editor using CRASHME:
! 62: // vi -C filename
! 63: // To stop testing, wait until all to text[] is deleted, or
! 64: // Ctrl-Z and kill -9 %1
! 65: // while in the editor Ctrl-T will toggle the crashme function on and off.
! 66: //#define BB_FEATURE_VI_CRASHME // randomly pick commands to execute
! 67:
! 68: #include <stdio.h>
! 69: #include <stdlib.h>
! 70: #include <string.h>
! 71: #include <termios.h>
! 72: #include <unistd.h>
! 73: #include <sys/ioctl.h>
! 74: #include <sys/time.h>
! 75: #include <sys/types.h>
! 76: #include <sys/stat.h>
! 77: #include <time.h>
! 78: #include <fcntl.h>
! 79: #include <signal.h>
! 80: #include <setjmp.h>
! 81: #include <regex.h>
! 82: #include <ctype.h>
! 83: #include <assert.h>
! 84: #include <errno.h>
! 85: #include <err.h>
! 86: #include <stdarg.h>
! 87:
! 88: #include "last_char_is.c"
! 89: #include "strlcat.c"
! 90: #include "strlcpy.c"
! 91:
! 92: #ifndef TRUE
! 93: #define TRUE ((int)1)
! 94: #define FALSE ((int)0)
! 95: #endif /* TRUE */
! 96: #define MAX_SCR_COLS BUFSIZ
! 97: #define BUFSIZ_STATBUF 200
! 98:
! 99: // Misc. non-Ascii keys that report an escape sequence
! 100: #define VI_K_UP 128 // cursor key Up
! 101: #define VI_K_DOWN 129 // cursor key Down
! 102: #define VI_K_RIGHT 130 // Cursor Key Right
! 103: #define VI_K_LEFT 131 // cursor key Left
! 104: #define VI_K_HOME 132 // Cursor Key Home
! 105: #define VI_K_END 133 // Cursor Key End
! 106: #define VI_K_INSERT 134 // Cursor Key Insert
! 107: #define VI_K_PAGEUP 135 // Cursor Key Page Up
! 108: #define VI_K_PAGEDOWN 136 // Cursor Key Page Down
! 109: #define VI_K_FUN1 137 // Function Key F1
! 110: #define VI_K_FUN2 138 // Function Key F2
! 111: #define VI_K_FUN3 139 // Function Key F3
! 112: #define VI_K_FUN4 140 // Function Key F4
! 113: #define VI_K_FUN5 141 // Function Key F5
! 114: #define VI_K_FUN6 142 // Function Key F6
! 115: #define VI_K_FUN7 143 // Function Key F7
! 116: #define VI_K_FUN8 144 // Function Key F8
! 117: #define VI_K_FUN9 145 // Function Key F9
! 118: #define VI_K_FUN10 146 // Function Key F10
! 119: #define VI_K_FUN11 147 // Function Key F11
! 120: #define VI_K_FUN12 148 // Function Key F12
! 121:
! 122: static const int YANKONLY = FALSE;
! 123: static const int YANKDEL = TRUE;
! 124: static const int FORWARD = 1; // code depends on "1" for array index
! 125: static const int BACK = -1; // code depends on "-1" for array index
! 126: static const int LIMITED = 0; // how much of text[] in char_search
! 127: static const int FULL = 1; // how much of text[] in char_search
! 128:
! 129: static const int S_BEFORE_WS = 1; // used in skip_thing() for moving "dot"
! 130: static const int S_TO_WS = 2; // used in skip_thing() for moving "dot"
! 131: static const int S_OVER_WS = 3; // used in skip_thing() for moving "dot"
! 132: static const int S_END_PUNCT = 4; // used in skip_thing() for moving "dot"
! 133: static const int S_END_ALNUM = 5; // used in skip_thing() for moving "dot"
! 134:
! 135: typedef unsigned char Byte;
! 136:
! 137:
! 138: static int editing; // >0 while we are editing a file
! 139: static int cmd_mode; // 0=command 1=insert
! 140: static int file_modified; // buffer contents changed
! 141: static int err_method; // indicate error with beep or flash
! 142: static int fn_start; // index of first cmd line file name
! 143: static int save_argc; // how many file names on cmd line
! 144: static int cmdcnt; // repetition count
! 145: static fd_set rfds; // use select() for small sleeps
! 146: static struct timeval tv; // use select() for small sleeps
! 147: static char erase_char; // the users erase character
! 148: static int rows, columns; // the terminal screen is this size
! 149: static int crow, ccol, offset; // cursor is on Crow x Ccol with Horz Ofset
! 150: static char *SOs, *SOn; // terminal standout start/normal ESC sequence
! 151: static char *bell; // terminal bell sequence
! 152: static char *Ceol, *Ceos; // Clear-end-of-line and Clear-end-of-screen ESC sequence
! 153: static char *CMrc; // Cursor motion arbitrary destination ESC sequence
! 154: static char *CMup, *CMdown; // Cursor motion up and down ESC sequence
! 155: static Byte *status_buffer; // mesages to the user
! 156: static Byte last_input_char; // last char read from user
! 157: static Byte last_forward_char; // last char searched for with 'f'
! 158: static Byte *cfn; // previous, current, and next file name
! 159: static Byte *text, *end, *textend; // pointers to the user data in memory
! 160: static Byte *screen; // pointer to the virtual screen buffer
! 161: static int screensize; // and its size
! 162: static Byte *screenbegin; // index into text[], of top line on the screen
! 163: static Byte *dot; // where all the action takes place
! 164: static int tabstop;
! 165: static struct termios term_orig, term_vi; // remember what the cooked mode was
! 166:
! 167: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 168: static int last_row; // where the cursor was last moved to
! 169: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 170: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 171: static jmp_buf restart; // catch_sig()
! 172: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 173: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 174: static struct winsize winsize; // remember the window size
! 175: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 176: #ifdef BB_FEATURE_VI_DOT_CMD
! 177: static int adding2q; // are we currently adding user input to q
! 178: static Byte *last_modifying_cmd; // last modifying cmd for "."
! 179: static Byte *ioq, *ioq_start; // pointer to string for get_one_char to "read"
! 180: #endif /* BB_FEATURE_VI_DOT_CMD */
! 181: #if defined(BB_FEATURE_VI_DOT_CMD) || defined(BB_FEATURE_VI_YANKMARK)
! 182: static Byte *modifying_cmds; // cmds that modify text[]
! 183: #endif /* BB_FEATURE_VI_DOT_CMD || BB_FEATURE_VI_YANKMARK */
! 184: #ifdef BB_FEATURE_VI_READONLY
! 185: static int vi_readonly, readonly;
! 186: #endif /* BB_FEATURE_VI_READONLY */
! 187: #ifdef BB_FEATURE_VI_SETOPTS
! 188: static int autoindent;
! 189: static int showmatch;
! 190: static int ignorecase;
! 191: #endif /* BB_FEATURE_VI_SETOPTS */
! 192: #ifdef BB_FEATURE_VI_YANKMARK
! 193: static Byte *reg[28]; // named register a-z, "D", and "U" 0-25,26,27
! 194: static int YDreg, Ureg; // default delete register and orig line for "U"
! 195: static Byte *mark[28]; // user marks points somewhere in text[]- a-z and previous context ''
! 196: static Byte *context_start, *context_end;
! 197: #endif /* BB_FEATURE_VI_YANKMARK */
! 198: #ifdef BB_FEATURE_VI_SEARCH
! 199: static Byte *last_search_pattern; // last pattern from a '/' or '?' search
! 200: #endif /* BB_FEATURE_VI_SEARCH */
! 201:
! 202:
! 203: static void edit_file (Byte *); // edit one file
! 204: static void do_cmd (Byte); // execute a command
! 205: static void sync_cursor (Byte *, int *, int *); // synchronize the screen cursor to dot
! 206: static Byte *begin_line (Byte *); // return pointer to cur line B-o-l
! 207: static Byte *end_line (Byte *); // return pointer to cur line E-o-l
! 208: static Byte *dollar_line (Byte *); // return pointer to just before NL
! 209: static Byte *prev_line (Byte *); // return pointer to prev line B-o-l
! 210: static Byte *next_line (Byte *); // return pointer to next line B-o-l
! 211: static Byte *end_screen (void); // get pointer to last char on screen
! 212: static int count_lines (Byte *, Byte *); // count line from start to stop
! 213: static Byte *find_line (int); // find begining of line #li
! 214: static Byte *move_to_col (Byte *, int); // move "p" to column l
! 215: static int isblnk (Byte); // is the char a blank or tab
! 216: static void dot_left (void); // move dot left- dont leave line
! 217: static void dot_right (void); // move dot right- dont leave line
! 218: static void dot_begin (void); // move dot to B-o-l
! 219: static void dot_end (void); // move dot to E-o-l
! 220: static void dot_next (void); // move dot to next line B-o-l
! 221: static void dot_prev (void); // move dot to prev line B-o-l
! 222: static void dot_scroll (int, int); // move the screen up or down
! 223: static void dot_skip_over_ws (void); // move dot pat WS
! 224: static void dot_delete (void); // delete the char at 'dot'
! 225: static Byte *bound_dot (Byte *); // make sure text[0] <= P < "end"
! 226: static Byte *new_screen (int, int); // malloc virtual screen memory
! 227: static Byte *new_text (int); // malloc memory for text[] buffer
! 228: static Byte *char_insert (Byte *, Byte); // insert the char c at 'p'
! 229: static Byte *stupid_insert (Byte *, Byte); // stupidly insert the char c at 'p'
! 230: static Byte find_range (Byte **, Byte **, Byte); // return pointers for an object
! 231: static int st_test (Byte *, int, int, Byte *); // helper for skip_thing()
! 232: static Byte *skip_thing (Byte *, int, int, int); // skip some object
! 233: static Byte *find_pair (Byte *, Byte); // find matching pair () [] {}
! 234: static Byte *text_hole_delete (Byte *, Byte *); // at "p", delete a 'size' byte hole
! 235: static Byte *text_hole_make (Byte *, int); // at "p", make a 'size' byte hole
! 236: static Byte *yank_delete (Byte *, Byte *, int, int); // yank text[] into register then delete
! 237: static void show_help (void); // display some help info
! 238: static void print_literal (Byte *, Byte *); // copy s to buf, convert unprintable
! 239: static void rawmode (void); // set "raw" mode on tty
! 240: static void cookmode (void); // return to "cooked" mode on tty
! 241: static int mysleep (int); // sleep for 'h' 1/100 seconds
! 242: static Byte readit (void); // read (maybe cursor) key from stdin
! 243: static Byte get_one_char (void); // read 1 char from stdin
! 244: static int file_size (Byte *); // what is the byte size of "fn"
! 245: static int file_insert (Byte *, Byte *, int);
! 246: static int file_write (Byte *, Byte *, Byte *);
! 247: static void place_cursor (int, int, int);
! 248: static void screen_erase ();
! 249: static void clear_to_eol (void);
! 250: static void clear_to_eos (void);
! 251: static void standout_start (void); // send "start reverse video" sequence
! 252: static void standout_end (void); // send "end reverse video" sequence
! 253: static void flash (int); // flash the terminal screen
! 254: static void beep (void); // beep the terminal
! 255: static void indicate_error (char); // use flash or beep to indicate error
! 256: static void show_status_line (void); // put a message on the bottom line
! 257: static void psb (char *, ...); // Print Status Buf
! 258: static void psbs (char *, ...); // Print Status Buf in standout mode
! 259: static void ni (Byte *); // display messages
! 260: static void edit_status (void); // show file status on status line
! 261: static void redraw (int); // force a full screen refresh
! 262: static void format_line (Byte *, Byte *, int);
! 263: static void refresh (int); // update the terminal from screen[]
! 264:
! 265: #ifdef BB_FEATURE_VI_SEARCH
! 266: static Byte *char_search (Byte *, Byte *, int, int); // search for pattern starting at p
! 267: static int mycmp (Byte *, Byte *, int); // string cmp based in "ignorecase"
! 268: #endif /* BB_FEATURE_VI_SEARCH */
! 269: #ifdef BB_FEATURE_VI_COLON
! 270: static void Hit_Return (void);
! 271: static Byte *get_one_address (Byte *, int *); // get colon addr, if present
! 272: static Byte *get_address (Byte *, int *, int *); // get two colon addrs, if present
! 273: static void colon (Byte *); // execute the "colon" mode cmds
! 274: #endif /* BB_FEATURE_VI_COLON */
! 275: static Byte *get_input_line (Byte *); // get input line- use "status line"
! 276: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 277: static void winch_sig (int); // catch window size changes
! 278: static void suspend_sig (int); // catch ctrl-Z
! 279: static void alarm_sig (int); // catch alarm time-outs
! 280: static void catch_sig (int); // catch ctrl-C
! 281: static void core_sig (int); // catch a core dump signal
! 282: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 283: #ifdef BB_FEATURE_VI_DOT_CMD
! 284: static void start_new_cmd_q (Byte); // new queue for command
! 285: static void end_cmd_q (); // stop saving input chars
! 286: #else /* BB_FEATURE_VI_DOT_CMD */
! 287: #define end_cmd_q()
! 288: #endif /* BB_FEATURE_VI_DOT_CMD */
! 289: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 290: static void window_size_get (int); // find out what size the window is
! 291: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 292: #ifdef BB_FEATURE_VI_SETOPTS
! 293: static void showmatching (Byte *); // show the matching pair () [] {}
! 294: #endif /* BB_FEATURE_VI_SETOPTS */
! 295: #if defined(BB_FEATURE_VI_YANKMARK) || defined(BB_FEATURE_VI_COLON) || defined(BB_FEATURE_VI_CRASHME)
! 296: static Byte *string_insert (Byte *, Byte *); // insert the string at 'p'
! 297: #endif /* BB_FEATURE_VI_YANKMARK || BB_FEATURE_VI_COLON || BB_FEATURE_VI_CRASHME */
! 298: #ifdef BB_FEATURE_VI_YANKMARK
! 299: static Byte *text_yank (Byte *, Byte *, int); // save copy of "p" into a register
! 300: static Byte what_reg (void); // what is letter of current YDreg
! 301: static void check_context (Byte); // remember context for '' command
! 302: static Byte *swap_context (Byte *); // goto new context for '' command
! 303: #endif /* BB_FEATURE_VI_YANKMARK */
! 304: #ifdef BB_FEATURE_VI_CRASHME
! 305: static void crash_dummy ();
! 306: static void crash_test ();
! 307: static int crashme = 0;
! 308: #endif /* BB_FEATURE_VI_CRASHME */
! 309:
! 310:
! 311: extern int
! 312: main (int argc, char **argv)
! 313: {
! 314: #ifdef BB_FEATURE_VI_YANKMARK
! 315: int i;
! 316: #endif /* BB_FEATURE_VI_YANKMARK */
! 317:
! 318: CMrc = "\033[%d;%dH"; // Terminal Crusor motion ESC sequence
! 319: CMup = "\033[A"; // move cursor up one line, same col
! 320: CMdown = "\n"; // move cursor down one line, same col
! 321: Ceol = "\033[0K"; // Clear from cursor to end of line
! 322: Ceos = "\033[0J"; // Clear from cursor to end of screen
! 323: SOs = "\033[7m"; // Terminal standout mode on
! 324: SOn = "\033[0m"; // Terminal standout mode off
! 325: bell = "\007"; // Terminal bell sequence
! 326: #ifdef BB_FEATURE_VI_CRASHME
! 327: (void) srand ((long) getpid ());
! 328: #endif /* BB_FEATURE_VI_CRASHME */
! 329: status_buffer = (Byte *) malloc (BUFSIZ_STATBUF); // hold messages to user
! 330: #ifdef BB_FEATURE_VI_READONLY
! 331: vi_readonly = readonly = FALSE;
! 332: if (strncmp (argv[0], "view", 4) == 0) {
! 333: readonly = TRUE;
! 334: vi_readonly = TRUE;
! 335: }
! 336: #endif /* BB_FEATURE_VI_READONLY */
! 337: #ifdef BB_FEATURE_VI_SETOPTS
! 338: autoindent = 1;
! 339: ignorecase = 1;
! 340: showmatch = 1;
! 341: #endif /* BB_FEATURE_VI_SETOPTS */
! 342: #ifdef BB_FEATURE_VI_YANKMARK
! 343: for (i = 0; i < 28; i++) {
! 344: reg[i] = 0;
! 345: } // init the yank regs
! 346: #endif /* BB_FEATURE_VI_YANKMARK */
! 347: #ifdef BB_FEATURE_VI_DOT_CMD
! 348: modifying_cmds = (Byte *) "aAcCdDiIJoOpPrRsxX<>~"; // cmds modifying text[]
! 349: #endif /* BB_FEATURE_VI_DOT_CMD */
! 350:
! 351: if (argc >= 2)
! 352: {
! 353: cfn = (Byte *) strdup (argv[1]);
! 354: edit_file (cfn);
! 355: }
! 356: else
! 357: {
! 358: fprintf (stderr, "%s: no file to edit, bailing out\n", argv[0]);
! 359: exit (-20);
! 360: }
! 361:
! 362: //-----------------------------------------------------------
! 363:
! 364:
! 365: /* set these back to defaults. this was the infamous screen resize crash bug */
! 366: signal (SIGWINCH, SIG_DFL);
! 367: signal (SIGTSTP, SIG_DFL);
! 368:
! 369: return (0);
! 370: }
! 371:
! 372: static void edit_file (Byte * fn)
! 373: {
! 374: char c;
! 375: int cnt, size, ch;
! 376:
! 377: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 378: char *msg;
! 379: int sig;
! 380: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 381: #ifdef BB_FEATURE_VI_YANKMARK
! 382: static Byte *cur_line;
! 383: #endif /* BB_FEATURE_VI_YANKMARK */
! 384:
! 385: rawmode ();
! 386: rows = 24;
! 387: columns = 80;
! 388: ch = -1;
! 389: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 390: window_size_get (0);
! 391: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 392: new_screen (rows, columns); // get memory for virtual screen
! 393:
! 394: cnt = file_size (fn); // file size
! 395: size = 2 * cnt; // 200% of file size
! 396: new_text (size); // get a text[] buffer
! 397: screenbegin = dot = end = text;
! 398: if (fn != 0) {
! 399: ch = file_insert (fn, text, cnt);
! 400: }
! 401: if (ch < 1) {
! 402: (void) char_insert (text, '\n'); // start empty buf with dummy line
! 403: }
! 404: file_modified = FALSE;
! 405: #ifdef BB_FEATURE_VI_YANKMARK
! 406: YDreg = 26; // default Yank/Delete reg
! 407: Ureg = 27; // hold orig line for "U" cmd
! 408: for (cnt = 0; cnt < 28; cnt++) {
! 409: mark[cnt] = 0;
! 410: } // init the marks
! 411: mark[26] = mark[27] = text; // init "previous context"
! 412: #endif /* BB_FEATURE_VI_YANKMARK */
! 413:
! 414: err_method = 1; // flash
! 415: last_forward_char = last_input_char = '\0';
! 416: crow = 0;
! 417: ccol = 0;
! 418: edit_status ();
! 419:
! 420: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 421: signal (SIGHUP, catch_sig);
! 422: signal (SIGINT, catch_sig);
! 423: signal (SIGALRM, alarm_sig);
! 424: signal (SIGTERM, catch_sig);
! 425: signal (SIGQUIT, core_sig);
! 426: signal (SIGILL, core_sig);
! 427: signal (SIGTRAP, core_sig);
! 428: signal (SIGIOT, core_sig);
! 429: signal (SIGABRT, core_sig);
! 430: signal (SIGFPE, core_sig);
! 431: signal (SIGBUS, core_sig);
! 432: signal (SIGSEGV, core_sig);
! 433: #ifdef SIGSYS
! 434: signal (SIGSYS, core_sig);
! 435: #endif
! 436: signal (SIGWINCH, winch_sig);
! 437: signal (SIGTSTP, suspend_sig);
! 438: sig = setjmp (restart);
! 439: if (sig != 0) {
! 440: msg = "";
! 441: if (sig == SIGWINCH)
! 442: msg = "(window resize)";
! 443: if (sig == SIGHUP)
! 444: msg = "(hangup)";
! 445: if (sig == SIGINT)
! 446: msg = "(interrupt)";
! 447: if (sig == SIGTERM)
! 448: msg = "(terminate)";
! 449: if (sig == SIGBUS)
! 450: msg = "(bus error)";
! 451: if (sig == SIGSEGV)
! 452: msg = "(I tried to touch invalid memory)";
! 453: if (sig == SIGALRM)
! 454: msg = "(alarm)";
! 455:
! 456: psbs ("-- caught signal %d %s--", sig, msg);
! 457: screenbegin = dot = text;
! 458: }
! 459: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 460:
! 461: editing = 1;
! 462: cmd_mode = 0; // 0=command 1=insert 2='R'eplace
! 463: cmdcnt = 0;
! 464: tabstop = 8;
! 465: offset = 0; // no horizontal offset
! 466: c = '\0';
! 467: #ifdef BB_FEATURE_VI_DOT_CMD
! 468: if (last_modifying_cmd != 0)
! 469: free (last_modifying_cmd);
! 470: if (ioq_start != NULL)
! 471: free (ioq_start);
! 472: ioq = ioq_start = last_modifying_cmd = 0;
! 473: adding2q = 0;
! 474: #endif /* BB_FEATURE_VI_DOT_CMD */
! 475: redraw (FALSE); // dont force every col re-draw
! 476: show_status_line ();
! 477:
! 478: //------This is the main Vi cmd handling loop -----------------------
! 479: while (editing > 0) {
! 480: #ifdef BB_FEATURE_VI_CRASHME
! 481: if (crashme > 0) {
! 482: if ((end - text) > 1) {
! 483: crash_dummy (); // generate a random command
! 484: } else {
! 485: crashme = 0;
! 486: dot =
! 487: string_insert(text, (Byte *) "\n\n##### Ran out of text to work on. #####\n\n"); // insert the string
! 488: refresh (FALSE);
! 489: }
! 490: }
! 491: #endif /* BB_FEATURE_VI_CRASHME */
! 492: last_input_char = c = get_one_char (); // get a cmd from user
! 493: #ifdef BB_FEATURE_VI_YANKMARK
! 494: // save a copy of the current line- for the 'U" command
! 495: if (begin_line (dot) != cur_line) {
! 496: cur_line = begin_line (dot);
! 497: text_yank (begin_line (dot), end_line (dot), Ureg);
! 498: }
! 499: #endif /* BB_FEATURE_VI_YANKMARK */
! 500: #ifdef BB_FEATURE_VI_DOT_CMD
! 501: // These are commands that change text[].
! 502: // Remember the input for the "." command
! 503: if (!adding2q && ioq_start == 0
! 504: && strchr((char *) modifying_cmds, c) != NULL) {
! 505: start_new_cmd_q (c);
! 506: }
! 507: #endif /* BB_FEATURE_VI_DOT_CMD */
! 508: do_cmd (c); // execute the user command
! 509: //
! 510: // poll to see if there is input already waiting. if we are
! 511: // not able to display output fast enough to keep up, skip
! 512: // the display update until we catch up with input.
! 513: if (mysleep(0) == 0) {
! 514: // no input pending- so update output
! 515: refresh (FALSE);
! 516: show_status_line ();
! 517: }
! 518: #ifdef BB_FEATURE_VI_CRASHME
! 519: if (crashme > 0)
! 520: crash_test (); // test editor variables
! 521: #endif /* BB_FEATURE_VI_CRASHME */
! 522: }
! 523: //-------------------------------------------------------------------
! 524:
! 525: place_cursor (rows, 0, FALSE); // go to bottom of screen
! 526: clear_to_eol (); // Erase to end of line
! 527: cookmode ();
! 528: }
! 529:
! 530: static Byte readbuffer[BUFSIZ];
! 531:
! 532: #ifdef BB_FEATURE_VI_CRASHME
! 533: static int totalcmds = 0;
! 534: static int Mp = 85; // Movement command Probability
! 535: static int Np = 90; // Non-movement command Probability
! 536: static int Dp = 96; // Delete command Probability
! 537: static int Ip = 97; // Insert command Probability
! 538: static int Yp = 98; // Yank command Probability
! 539: static int Pp = 99; // Put command Probability
! 540: static int M = 0, N = 0, I = 0, D = 0, Y = 0, P = 0, U = 0;
! 541: char chars[20] = "\t012345 abcdABCD-=.$";
! 542: char *words[20] = { "this", "is", "a", "test",
! 543: "broadcast", "the", "emergency", "of",
! 544: "system", "quick", "brown", "fox",
! 545: "jumped", "over", "lazy", "dogs",
! 546: "back", "January", "Febuary", "March"
! 547: };
! 548: char *lines[20] = {
! 549: "You should have received a copy of the GNU General Public License\n",
! 550: "char c, cm, *cmd, *cmd1;\n",
! 551: "generate a command by percentages\n",
! 552: "Numbers may be typed as a prefix to some commands.\n",
! 553: "Quit, discarding changes!\n",
! 554: "Forced write, if permission originally not valid.\n",
! 555: "In general, any ex or ed command (such as substitute or delete).\n",
! 556: "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
! 557: "Please get w/ me and I will go over it with you.\n",
! 558: "The following is a list of scheduled, committed changes.\n",
! 559: "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
! 560: "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
! 561: "Any question about transactions please contact Sterling Huxley.\n",
! 562: "I will try to get back to you by Friday, December 31.\n",
! 563: "This Change will be implemented on Friday.\n",
! 564: "Let me know if you have problems accessing this;\n",
! 565: "Sterling Huxley recently added you to the access list.\n",
! 566: "Would you like to go to lunch?\n",
! 567: "The last command will be automatically run.\n",
! 568: "This is too much english for a computer geek.\n",
! 569: };
! 570: char *multilines[20] = {
! 571: "You should have received a copy of the GNU General Public License\n",
! 572: "char c, cm, *cmd, *cmd1;\n",
! 573: "generate a command by percentages\n",
! 574: "Numbers may be typed as a prefix to some commands.\n",
! 575: "Quit, discarding changes!\n",
! 576: "Forced write, if permission originally not valid.\n",
! 577: "In general, any ex or ed command (such as substitute or delete).\n",
! 578: "I have tickets available for the Blazers vs LA Clippers for Monday, Janurary 1 at 1:00pm.\n",
! 579: "Please get w/ me and I will go over it with you.\n",
! 580: "The following is a list of scheduled, committed changes.\n",
! 581: "1. Launch Norton Antivirus (Start, Programs, Norton Antivirus)\n",
! 582: "Reminder....Town Meeting in Central Perk cafe today at 3:00pm.\n",
! 583: "Any question about transactions please contact Sterling Huxley.\n",
! 584: "I will try to get back to you by Friday, December 31.\n",
! 585: "This Change will be implemented on Friday.\n",
! 586: "Let me know if you have problems accessing this;\n",
! 587: "Sterling Huxley recently added you to the access list.\n",
! 588: "Would you like to go to lunch?\n",
! 589: "The last command will be automatically run.\n",
! 590: "This is too much english for a computer geek.\n",
! 591: };
! 592:
! 593: // create a random command to execute
! 594: static void crash_dummy()
! 595: {
! 596: static int sleeptime; // how long to pause between commands
! 597: char c, cm, *cmd, *cmd1;
! 598: int i, cnt, thing, rbi, startrbi, percent;
! 599:
! 600: // "dot" movement commands
! 601: cmd1 = " \n\r\002\004\005\006\025\0310^$-+wWeEbBhjklHL";
! 602:
! 603: // is there already a command running?
! 604: if (strlen ((char *) readbuffer) > 0)
! 605: goto cd1;
! 606: cd0:
! 607: startrbi = rbi = 0;
! 608: sleeptime = 0; // how long to pause between commands
! 609: memset (readbuffer, '\0', BUFSIZ - 1); // clear the read buffer
! 610: // generate a command by percentages
! 611: percent = (int) lrand48 () % 100; // get a number from 0-99
! 612: if (percent < Mp) { // Movement commands
! 613: // available commands
! 614: cmd = cmd1;
! 615: M++;
! 616: } else if (percent < Np) { // non-movement commands
! 617: cmd = "mz<>\'\""; // available commands
! 618: N++;
! 619: } else if (percent < Dp) { // Delete commands
! 620: cmd = "dx"; // available commands
! 621: D++;
! 622: } else if (percent < Ip) { // Inset commands
! 623: cmd = "iIaAsrJ"; // available commands
! 624: I++;
! 625: } else if (percent < Yp) { // Yank commands
! 626: cmd = "yY"; // available commands
! 627: Y++;
! 628: } else if (percent < Pp) { // Put commands
! 629: cmd = "pP"; // available commands
! 630: P++;
! 631: } else {
! 632: // We do not know how to handle this command, try again
! 633: U++;
! 634: goto cd0;
! 635: }
! 636: // randomly pick one of the available cmds from "cmd[]"
! 637: i = (int) lrand48 () % strlen (cmd);
! 638: cm = cmd[i];
! 639: if (strchr (":\024", cm))
! 640: goto cd0; // dont allow colon or ctrl-T commands
! 641: readbuffer[rbi++] = cm; // put cmd into input buffer
! 642:
! 643: // now we have the command-
! 644: // there are 1, 2, and multi char commands
! 645: // find out which and generate the rest of command as necessary
! 646: if (strchr ("dmryz<>\'\"", cm)) { // 2-char commands
! 647: cmd1 = " \n\r0$^-+wWeEbBhjklHL";
! 648: if (cm == 'm' || cm == '\'' || cm == '\"') { // pick a reg[]
! 649: cmd1 = "abcdefghijklmnopqrstuvwxyz";
! 650: }
! 651: thing = (int) lrand48 () % strlen (cmd1); // pick a movement command
! 652: c = cmd1[thing];
! 653: readbuffer[rbi++] = c; // add movement to input buffer
! 654: }
! 655: if (strchr ("iIaAsc", cm)) { // multi-char commands
! 656: if (cm == 'c') {
! 657: // change some thing
! 658: thing = (int) lrand48 () % strlen (cmd1); // pick a movement command
! 659: c = cmd1[thing];
! 660: readbuffer[rbi++] = c; // add movement to input buffer
! 661: }
! 662: thing = (int) lrand48 () % 4; // what thing to insert
! 663: cnt = (int) lrand48 () % 10; // how many to insert
! 664: for (i = 0; i < cnt; i++) {
! 665: if (thing == 0) { // insert chars
! 666: readbuffer[rbi++] = chars[((int) lrand48 () % strlen (chars))];
! 667: } else if (thing == 1) { // insert words
! 668: strlcat((char *) readbuffer, words[(int) lrand48() % 20], BUFSIZ); /* FIXED added BUFSIZ and converted to strlcat() */
! 669: strcat ((char *) readbuffer, " ");
! 670: sleeptime = 0; // how fast to type
! 671: } else if (thing == 2) { // insert lines
! 672: strlcat((char *) readbuffer, lines[(int) lrand48() % 20], BUFSIZ); /* FIXED added BUFSIZ and converted to strlcat() */
! 673: sleeptime = 0; // how fast to type
! 674: } else { // insert multi-lines
! 675: strlcat((char *) readbuffer, multilines[(int) lrand48() % 20], BUFSIZ); /* FIXED added BUFSIZ and converted to stlcat() */
! 676: sleeptime = 0; // how fast to type
! 677: }
! 678: }
! 679: strcat ((char *) readbuffer, "\033");
! 680: }
! 681: cd1:
! 682: totalcmds++;
! 683: if (sleeptime > 0)
! 684: (void) mysleep (sleeptime); // sleep 1/100 sec
! 685: }
! 686:
! 687: // test to see if there are any errors
! 688: static void crash_test()
! 689: {
! 690: static time_t oldtim;
! 691: time_t tim;
! 692: char d[2], buf[BUFSIZ], msg[BUFSIZ];
! 693:
! 694: msg[0] = '\0';
! 695: if (end < text) {
! 696: strcat ((char *) msg, "end<text ");
! 697: }
! 698: if (end > textend) {
! 699: strcat ((char *) msg, "end>textend ");
! 700: }
! 701: if (dot < text) {
! 702: strcat ((char *) msg, "dot<text ");
! 703: }
! 704: if (dot > end) {
! 705: strcat ((char *) msg, "dot>end ");
! 706: }
! 707: if (screenbegin < text) {
! 708: strcat ((char *) msg, "screenbegin<text ");
! 709: }
! 710: if (screenbegin > end - 1) {
! 711: strcat ((char *) msg, "screenbegin>end-1 ");
! 712: }
! 713:
! 714: if (strlen (msg) > 0) {
! 715: // alarm(0);
! 716: sprintf (buf, "\n\n%d: \'%c\' %s\n\n\n%s[Hit return to continue]%s",
! 717: totalcmds, last_input_char, msg, SOs, SOn);
! 718: write (1, buf, strlen (buf));
! 719: while (read (0, d, 1) > 0) {
! 720: if (d[0] == '\n' || d[0] == '\r')
! 721: break;
! 722: }
! 723: // alarm(3);
! 724: }
! 725: tim = (time_t) time ((time_t *) 0);
! 726: if (tim >= (oldtim + 3)) {
! 727: sprintf ((char *) status_buffer,
! 728: "Tot=%d: M=%d N=%d I=%d D=%d Y=%d P=%d U=%d size=%d",
! 729: totalcmds, M, N, I, D, Y, P, U, end - text + 1);
! 730: oldtim = tim;
! 731: }
! 732: return;
! 733: }
! 734: #endif /* BB_FEATURE_VI_CRASHME */
! 735:
! 736: //---------------------------------------------------------------------
! 737: //----- the Ascii Chart -----------------------------------------------
! 738: //
! 739: // 00 nul 01 soh 02 stx 03 etx 04 eot 05 enq 06 ack 07 bel
! 740: // 08 bs 09 ht 0a nl 0b vt 0c np 0d cr 0e so 0f si
! 741: // 10 dle 11 dc1 12 dc2 13 dc3 14 dc4 15 nak 16 syn 17 etb
! 742: // 18 can 19 em 1a sub 1b esc 1c fs 1d gs 1e rs 1f us
! 743: // 20 sp 21 ! 22 " 23 # 24 $ 25 % 26 & 27 '
! 744: // 28 ( 29 ) 2a * 2b + 2c , 2d - 2e . 2f /
! 745: // 30 0 31 1 32 2 33 3 34 4 35 5 36 6 37 7
! 746: // 38 8 39 9 3a : 3b ; 3c < 3d = 3e > 3f ?
! 747: // 40 @ 41 A 42 B 43 C 44 D 45 E 46 F 47 G
! 748: // 48 H 49 I 4a J 4b K 4c L 4d M 4e N 4f O
! 749: // 50 P 51 Q 52 R 53 S 54 T 55 U 56 V 57 W
! 750: // 58 X 59 Y 5a Z 5b [ 5c \ 5d ] 5e ^ 5f _
! 751: // 60 ` 61 a 62 b 63 c 64 d 65 e 66 f 67 g
! 752: // 68 h 69 i 6a j 6b k 6c l 6d m 6e n 6f o
! 753: // 70 p 71 q 72 r 73 s 74 t 75 u 76 v 77 w
! 754: // 78 x 79 y 7a z 7b { 7c | 7d } 7e ~ 7f del
! 755: //---------------------------------------------------------------------
! 756:
! 757: //----- Execute a Vi Command -----------------------------------
! 758: static void do_cmd(Byte c)
! 759: {
! 760: Byte c1, *p, *q, *msg, buf[9], *save_dot;
! 761: int cnt, i, j, dir, yf;
! 762:
! 763: c1 = c; // quiet the compiler
! 764: cnt = yf = dir = 0; // quiet the compiler
! 765: p = q = save_dot = msg = buf; // quiet the compiler
! 766: memset (buf, '\0', 9); // clear buf
! 767:
! 768: /* if this is a cursor key, skip these checks */
! 769: switch (c) {
! 770: case VI_K_UP:
! 771: case VI_K_DOWN:
! 772: case VI_K_LEFT:
! 773: case VI_K_RIGHT:
! 774: case VI_K_HOME:
! 775: case VI_K_END:
! 776: case VI_K_PAGEUP:
! 777: case VI_K_PAGEDOWN:
! 778: goto key_cmd_mode;
! 779: }
! 780:
! 781: if (cmd_mode == 2) {
! 782: // we are 'R'eplacing the current *dot with new char
! 783: if (*dot == '\n') {
! 784: // don't Replace past E-o-l
! 785: cmd_mode = 1; // convert to insert
! 786: } else {
! 787: if (1 <= c && c <= 127) { // only ASCII chars
! 788: if (c != 27)
! 789: dot = yank_delete (dot, dot, 0, YANKDEL); // delete char
! 790: dot = char_insert (dot, c); // insert new char
! 791: }
! 792: goto dc1;
! 793: }
! 794: }
! 795: if (cmd_mode == 1) {
! 796: // hitting "Insert" twice means "R" replace mode
! 797: if (c == VI_K_INSERT) goto dc5;
! 798: // insert the char c at "dot"
! 799: if (1 <= c && c <= 127) {
! 800: dot = char_insert (dot, c); // only ASCII chars
! 801: }
! 802: goto dc1;
! 803: }
! 804:
! 805: key_cmd_mode:
! 806: switch (c) {
! 807: //case 0x01: // soh
! 808: //case 0x09: // ht
! 809: //case 0x0b: // vt
! 810: //case 0x0e: // so
! 811: //case 0x0f: // si
! 812: //case 0x10: // dle
! 813: //case 0x11: // dc1
! 814: //case 0x13: // dc3
! 815: #ifdef BB_FEATURE_VI_CRASHME
! 816: case 0x14: // dc4 ctrl-T
! 817: crashme = (crashme == 0) ? 1 : 0;
! 818: break;
! 819: #endif /* BB_FEATURE_VI_CRASHME */
! 820: //case 0x16: // syn
! 821: //case 0x17: // etb
! 822: //case 0x18: // can
! 823: //case 0x1c: // fs
! 824: //case 0x1d: // gs
! 825: //case 0x1e: // rs
! 826: //case 0x1f: // us
! 827: //case '!': // !-
! 828: //case '#': // #-
! 829: //case '&': // &-
! 830: //case '(': // (-
! 831: //case ')': // )-
! 832: //case '*': // *-
! 833: //case ',': // ,-
! 834: //case '=': // =-
! 835: //case '@': // @-
! 836: //case 'F': // F-
! 837: //case 'K': // K-
! 838: //case 'Q': // Q-
! 839: //case 'S': // S-
! 840: //case 'T': // T-
! 841: //case 'V': // V-
! 842: //case '[': // [-
! 843: //case '\\': // \-
! 844: //case ']': // ]-
! 845: //case '_': // _-
! 846: //case '`': // `-
! 847: //case 'g': // g-
! 848: //case 'u': // u- FIXME- there is no undo
! 849: //case 'v': // v-
! 850: default: // unrecognised command
! 851: buf[0] = c;
! 852: buf[1] = '\0';
! 853: if (c <= ' ') {
! 854: buf[0] = '^';
! 855: buf[1] = c + '@';
! 856: buf[2] = '\0';
! 857: }
! 858: ni ((Byte *) buf);
! 859: end_cmd_q (); // stop adding to q
! 860: case 0x00: // nul- ignore
! 861: break;
! 862: case 2: // ctrl-B scroll up full screen
! 863: case VI_K_PAGEUP: // Cursor Key Page Up
! 864: dot_scroll (rows - 2, -1);
! 865: break;
! 866: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 867: case 0x03: // ctrl-C interrupt
! 868: longjmp (restart, 1);
! 869: break;
! 870: case 26: // ctrl-Z suspend
! 871: suspend_sig (SIGTSTP);
! 872: break;
! 873: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 874: case 4: // ctrl-D scroll down half screen
! 875: dot_scroll ((rows - 2) / 2, 1);
! 876: break;
! 877: case 5: // ctrl-E scroll down one line
! 878: dot_scroll (1, 1);
! 879: break;
! 880: case 6: // ctrl-F scroll down full screen
! 881: case VI_K_PAGEDOWN: // Cursor Key Page Down
! 882: dot_scroll (rows - 2, 1);
! 883: break;
! 884: case 7: // ctrl-G show current status
! 885: edit_status ();
! 886: break;
! 887: case 'h': // h- move left
! 888: case VI_K_LEFT: // cursor key Left
! 889: case 8: // ctrl-H- move left (This may be ERASE char)
! 890: case 127: // DEL- move left (This may be ERASE char)
! 891: do {
! 892: dot_left ();
! 893: } while (cmdcnt-- > 1);
! 894: break;
! 895: case 10: // Newline ^J
! 896: case 'j': // j- goto next line, same col
! 897: case VI_K_DOWN: // cursor key Down
! 898: do {
! 899: dot_next(); // go to next B-o-l
! 900: dot = move_to_col(dot, ccol + offset); // try stay in same col
! 901: } while (cmdcnt-- > 1);
! 902: break;
! 903: case 12: // ctrl-L force redraw whole screen
! 904: case 18: // ctrl-R force redraw
! 905: place_cursor (0, 0, FALSE); // put cursor in correct place
! 906: clear_to_eos (); // tel terminal to erase display
! 907: (void) mysleep (10);
! 908: screen_erase (); // erase the internal screen buffer
! 909: refresh (TRUE); // this will redraw the entire display
! 910: break;
! 911: case 13: // Carriage Return ^M
! 912: case '+': // +- goto next line
! 913: do {
! 914: dot_next();
! 915: dot_skip_over_ws();
! 916: } while (cmdcnt-- > 1);
! 917: break;
! 918: case 21: // ctrl-U scroll up half screen
! 919: dot_scroll ((rows - 2) / 2, -1);
! 920: break;
! 921: case 25: // ctrl-Y scroll up one line
! 922: dot_scroll (1, -1);
! 923: break;
! 924: case 27: // esc
! 925: if (cmd_mode == 0)
! 926: indicate_error (c);
! 927: cmd_mode = 0; // stop insrting
! 928: end_cmd_q ();
! 929: *status_buffer = '\0'; // clear status buffer
! 930: break;
! 931: case ' ': // move right
! 932: case 'l': // move right
! 933: case VI_K_RIGHT: // Cursor Key Right
! 934: do {
! 935: dot_right();
! 936: } while (cmdcnt-- > 1);
! 937: break;
! 938: #ifdef BB_FEATURE_VI_YANKMARK
! 939: case '"': // "- name a register to use for Delete/Yank
! 940: c1 = get_one_char ();
! 941: c1 = tolower (c1);
! 942: if (islower(c1)) {
! 943: YDreg = c1 - 'a';
! 944: } else {
! 945: indicate_error (c);
! 946: }
! 947: break;
! 948: case '\'': // '- goto a specific mark
! 949: c1 = get_one_char ();
! 950: c1 = tolower (c1);
! 951: if (islower(c1)) {
! 952: c1 = c1 - 'a';
! 953: // get the b-o-l
! 954: q = mark[(int) c1];
! 955: if (text <= q && q < end) {
! 956: dot = q;
! 957: dot_begin (); // go to B-o-l
! 958: dot_skip_over_ws ();
! 959: }
! 960: } else if (c1 == '\'') { // goto previous context
! 961: dot = swap_context (dot); // swap current and previous context
! 962: dot_begin (); // go to B-o-l
! 963: dot_skip_over_ws ();
! 964: } else {
! 965: indicate_error (c);
! 966: }
! 967: break;
! 968: case 'm': // m- Mark a line
! 969: // this is really stupid. If there are any inserts or deletes
! 970: // between text[0] and dot then this mark will not point to the
! 971: // correct location! It could be off by many lines!
! 972: // Well..., at least its quick and dirty.
! 973: c1 = get_one_char ();
! 974: c1 = tolower (c1);
! 975: if (islower(c1)) {
! 976: c1 = c1 - 'a';
! 977: // remember the line
! 978: mark[(int) c1] = dot;
! 979: } else {
! 980: indicate_error (c);
! 981: }
! 982: break;
! 983: case 'P': // P- Put register before
! 984: case 'p': // p- put register after
! 985: p = reg[YDreg];
! 986: if (p == 0) {
! 987: psbs ("Nothing in register %c", what_reg ());
! 988: break;
! 989: }
! 990: // are we putting whole lines or strings
! 991: if (strchr((char *) p, '\n') != NULL) {
! 992: if (c == 'P') {
! 993: dot_begin (); // putting lines- Put above
! 994: }
! 995: if (c == 'p') {
! 996: // are we putting after very last line?
! 997: if (end_line (dot) == (end - 1)) {
! 998: dot = end; // force dot to end of text[]
! 999: } else {
! 1000: dot_next (); // next line, then put before
! 1001: }
! 1002: }
! 1003: } else {
! 1004: if (c == 'p')
! 1005: dot_right (); // move to right, can move to NL
! 1006: }
! 1007: dot = string_insert (dot, p); // insert the string
! 1008: end_cmd_q (); // stop adding to q
! 1009: break;
! 1010: case 'U': // U- Undo; replace current line with original version
! 1011: if (reg[Ureg] != 0) {
! 1012: p = begin_line (dot);
! 1013: q = end_line (dot);
! 1014: p = text_hole_delete (p, q); // delete cur line
! 1015: p = string_insert (p, reg[Ureg]); // insert orig line
! 1016: dot = p;
! 1017: dot_skip_over_ws ();
! 1018: }
! 1019: break;
! 1020: #endif /* BB_FEATURE_VI_YANKMARK */
! 1021: case '$': // $- goto end of line
! 1022: case VI_K_END: // Cursor Key End
! 1023: do {
! 1024: dot = end_line(dot + 1);
! 1025: } while (cmdcnt-- > 1);
! 1026: break;
! 1027: case '%': // %- find matching char of pair () [] {}
! 1028: for (q = dot; q < end && *q != '\n'; q++) {
! 1029: if (strchr("()[]{}", *q) != NULL) {
! 1030: // we found half of a pair
! 1031: p = find_pair (q, *q);
! 1032: if (p == NULL) {
! 1033: indicate_error (c);
! 1034: } else {
! 1035: dot = p;
! 1036: }
! 1037: break;
! 1038: }
! 1039: }
! 1040: if (*q == '\n')
! 1041: indicate_error (c);
! 1042: break;
! 1043: case 'f': // f- forward to a user specified char
! 1044: last_forward_char = get_one_char (); // get the search char
! 1045: //
! 1046: // dont seperate these two commands. 'f' depends on ';'
! 1047: //
! 1048: //**** fall thru to ... 'i'
! 1049: case ';': // ;- look at rest of line for last forward char
! 1050: if (last_forward_char == 0) break;
! 1051: do {
! 1052: q = dot + 1;
! 1053: while (q < end - 1 && *q != '\n' && *q != last_forward_char) {
! 1054: q++;
! 1055: }
! 1056: if (*q == last_forward_char)
! 1057: dot = q;
! 1058: } while (cmdcnt-- > 1);
! 1059: break;
! 1060: case '-': // -- goto prev line
! 1061: do {
! 1062: dot_prev();
! 1063: dot_skip_over_ws();
! 1064: } while (cmdcnt-- > 1);
! 1065: break;
! 1066: #ifdef BB_FEATURE_VI_DOT_CMD
! 1067: case '.': // .- repeat the last modifying command
! 1068: // Stuff the last_modifying_cmd back into stdin
! 1069: // and let it be re-executed.
! 1070: if (last_modifying_cmd != 0) {
! 1071: ioq = ioq_start = (Byte *) strdup ((char *) last_modifying_cmd);
! 1072: }
! 1073: break;
! 1074: #endif /* BB_FEATURE_VI_DOT_CMD */
! 1075: #ifdef BB_FEATURE_VI_SEARCH
! 1076: case '?': // /- search for a pattern
! 1077: case '/': // /- search for a pattern
! 1078: buf[0] = c;
! 1079: buf[1] = '\0';
! 1080: q = get_input_line (buf); // get input line- use "status line"
! 1081: if (strlen ((char *) q) == 1)
! 1082: goto dc3; // if no pat re-use old pat
! 1083: if (strlen ((char *) q) > 1) { // new pat- save it and find
! 1084: // there is a new pat
! 1085: if (last_search_pattern != 0) {
! 1086: free (last_search_pattern);
! 1087: }
! 1088: last_search_pattern = (Byte *) strdup ((char *) q);
! 1089: goto dc3; // now find the pattern
! 1090: }
! 1091: // user changed mind and erased the "/"- do nothing
! 1092: break;
! 1093: case 'N': // N- backward search for last pattern
! 1094: if (last_search_pattern == 0) break;
! 1095: dir = BACK; // assume BACKWARD search
! 1096: p = dot - 1;
! 1097: if (last_search_pattern[0] == '?') {
! 1098: dir = FORWARD;
! 1099: p = dot + 1;
! 1100: }
! 1101: goto dc4; // now search for pattern
! 1102: break;
! 1103: case 'n': // n- repeat search for last pattern
! 1104: // search rest of text[] starting at next char
! 1105: // if search fails return orignal "p" not the "p+1" address
! 1106: dc3:
! 1107: if (last_search_pattern == 0) {
! 1108: msg = (Byte *) "No previous regular expression";
! 1109: goto dc2;
! 1110: }
! 1111: if (last_search_pattern[0] == '/') {
! 1112: dir = FORWARD; // assume FORWARD search
! 1113: p = dot + 1;
! 1114: }
! 1115: if (last_search_pattern[0] == '?') {
! 1116: dir = BACK;
! 1117: p = dot - 1;
! 1118: }
! 1119: dc4:
! 1120: msg = NULL;
! 1121: do {
! 1122: q = char_search (p, last_search_pattern + 1, dir, FULL);
! 1123: if (q != NULL) {
! 1124: dot = q; // good search, update "dot"
! 1125: if (cmdcnt-- > 1) {
! 1126: p = dot + ((dir == FORWARD) ? 1 : -1);
! 1127: goto dc4;
! 1128: }
! 1129: msg = (Byte *) " ";
! 1130: goto dc2;
! 1131: }
! 1132: // no pattern found between "dot" and "end"- continue at top
! 1133: p = text;
! 1134: if (dir == BACK) {
! 1135: p = end - 1;
! 1136: }
! 1137: q = char_search (p, last_search_pattern + 1, dir, FULL);
! 1138: if (q != NULL) { // found something
! 1139: dot = q; // found new pattern- goto it
! 1140: msg = (Byte *) "search hit BOTTOM, continuing at TOP";
! 1141: if (dir == BACK) {
! 1142: msg = (Byte *) "search hit TOP, continuing at BOTTOM";
! 1143: }
! 1144: } else {
! 1145: msg = (Byte *) "Pattern not found";
! 1146: }
! 1147: } while (msg == NULL && (cmdcnt-- > 1));
! 1148: dc2:
! 1149: psbs ("%s", msg);
! 1150: break;
! 1151: case '{': // {- move backward paragraph
! 1152: do {
! 1153: q = char_search(dot, (Byte *) "\n\n", BACK, FULL);
! 1154: if (q != NULL) { // found blank line
! 1155: dot = next_line(q); // move to next blank line
! 1156: }
! 1157: } while (cmdcnt-- > 1);
! 1158: break;
! 1159: case '}': // }- move forward paragraph
! 1160: do {
! 1161: q = char_search(dot, (Byte *) "\n\n", FORWARD, FULL);
! 1162: if (q != NULL) { // found blank line
! 1163: dot = next_line(q); // move to next blank line
! 1164: }
! 1165: } while (cmdcnt-- > 1);
! 1166: break;
! 1167: #endif /* BB_FEATURE_VI_SEARCH */
! 1168: case '0': // 0- goto begining of line
! 1169: case '1': // 1-
! 1170: case '2': // 2-
! 1171: case '3': // 3-
! 1172: case '4': // 4-
! 1173: case '5': // 5-
! 1174: case '6': // 6-
! 1175: case '7': // 7-
! 1176: case '8': // 8-
! 1177: case '9': // 9-
! 1178: if (c == '0' && cmdcnt < 1) {
! 1179: dot_begin (); // this was a standalone zero
! 1180: } else {
! 1181: cmdcnt = cmdcnt * 10 + (c - '0'); // this 0 is part of a number
! 1182: if (cmdcnt > 65536) cmdcnt = 65536; // arbitrary
! 1183: }
! 1184: break;
! 1185: case ':': // :- the colon mode commands
! 1186: p = get_input_line ((Byte *) ":"); // get input line- use "status line"
! 1187: #ifdef BB_FEATURE_VI_COLON
! 1188: colon (p); // execute the command
! 1189: #else /* BB_FEATURE_VI_COLON */
! 1190: if (*p == ':')
! 1191: p++; // move past the ':'
! 1192: cnt = strlen ((char *) p);
! 1193: if (cnt <= 0)
! 1194: break;
! 1195: if (strncasecmp((char *) p, "quit", cnt) == 0 ||
! 1196: strncasecmp((char *) p, "q!", cnt) == 0) { // delete lines
! 1197: if (file_modified == TRUE && p[1] != '!') {
! 1198: psbs ("No write since last change (:quit! overrides)");
! 1199: } else {
! 1200: editing = 0;
! 1201: }
! 1202: } else if (strncasecmp((char *) p, "write", cnt) == 0 ||
! 1203: strncasecmp((char *) p, "wq", cnt) == 0) {
! 1204: cnt = file_write (cfn, text, end - 1);
! 1205: file_modified = FALSE;
! 1206: psb ("\"%s\" %dL, %dC", cfn, count_lines (text, end - 1), cnt);
! 1207: if (p[1] == 'q') {
! 1208: editing = 0;
! 1209: }
! 1210: } else if (strncasecmp((char *) p, "file", cnt) == 0) {
! 1211: edit_status (); // show current file status
! 1212: } else if (sscanf ((char *) p, "%d", &j) > 0) {
! 1213: dot = find_line (j); // go to line # j
! 1214: dot_skip_over_ws ();
! 1215: } else { // unrecognised cmd
! 1216: ni ((Byte *) p);
! 1217: }
! 1218: #endif /* BB_FEATURE_VI_COLON */
! 1219: break;
! 1220: case '<': // <- Left shift something
! 1221: case '>': // >- Right shift something
! 1222: cnt = count_lines (text, dot); // remember what line we are on
! 1223: c1 = get_one_char (); // get the type of thing to delete
! 1224: find_range (&p, &q, c1);
! 1225: (void) yank_delete (p, q, 1, YANKONLY); // save copy before change
! 1226: p = begin_line (p);
! 1227: q = end_line (q);
! 1228: i = count_lines (p, q); // # of lines we are shifting
! 1229: for (; i > 0; i--, p = next_line(p)) {
! 1230: if (c == '<') {
! 1231: // shift left- remove tab or 8 spaces
! 1232: if (*p == '\t') {
! 1233: // shrink buffer 1 char
! 1234: (void) text_hole_delete (p, p);
! 1235: } else if (*p == ' ') {
! 1236: // we should be calculating columns, not just SPACE
! 1237: for (j = 0; *p == ' ' && j < tabstop; j++) {
! 1238: (void) text_hole_delete (p, p);
! 1239: }
! 1240: }
! 1241: } else if (c == '>') {
! 1242: // shift right -- add tab or 8 spaces
! 1243: (void) char_insert (p, '\t');
! 1244: }
! 1245: }
! 1246: dot = find_line (cnt); // what line were we on
! 1247: dot_skip_over_ws ();
! 1248: end_cmd_q (); // stop adding to q
! 1249: break;
! 1250: case 'A': // A- append at e-o-l
! 1251: dot_end (); // go to e-o-l
! 1252: //**** fall thru to ... 'a'
! 1253: case 'a': // a- append after current char
! 1254: if (*dot != '\n')
! 1255: dot++;
! 1256: goto dc_i;
! 1257: break;
! 1258: case 'B': // B- back a blank-delimited Word
! 1259: case 'E': // E- end of a blank-delimited word
! 1260: case 'W': // W- forward a blank-delimited word
! 1261: dir = ((c == 'B') ? BACK : FORWARD);
! 1262: do {
! 1263: if (c == 'W' || isspace(dot[dir])) {
! 1264: dot = skip_thing (dot, 1, dir, S_TO_WS);
! 1265: dot = skip_thing (dot, 2, dir, S_OVER_WS);
! 1266: }
! 1267: if (c != 'W')
! 1268: dot = skip_thing (dot, 1, dir, S_BEFORE_WS);
! 1269: } while (cmdcnt-- > 1);
! 1270: break;
! 1271: case 'C': // C- Change to e-o-l
! 1272: case 'D': // D- delete to e-o-l
! 1273: save_dot = dot;
! 1274: dot = dollar_line (dot); // move to before NL
! 1275: // copy text into a register and delete
! 1276: dot = yank_delete (save_dot, dot, 0, YANKDEL); // delete to e-o-l
! 1277: if (c == 'C')
! 1278: goto dc_i; // start inserting
! 1279: #ifdef BB_FEATURE_VI_DOT_CMD
! 1280: if (c == 'D')
! 1281: end_cmd_q (); // stop adding to q
! 1282: #endif /* BB_FEATURE_VI_DOT_CMD */
! 1283: break;
! 1284: case 'G': // G- goto to a line number (default= E-O-F)
! 1285: dot = end - 1; // assume E-O-F
! 1286: if (cmdcnt > 0) {
! 1287: dot = find_line (cmdcnt); // what line is #cmdcnt
! 1288: }
! 1289: dot_skip_over_ws ();
! 1290: break;
! 1291: case 'H': // H- goto top line on screen
! 1292: dot = screenbegin;
! 1293: if (cmdcnt > (rows - 1)) {
! 1294: cmdcnt = (rows - 1);
! 1295: }
! 1296: if (cmdcnt-- > 1) {
! 1297: do_cmd ('+');
! 1298: } // repeat cnt
! 1299: dot_skip_over_ws ();
! 1300: break;
! 1301: case 'I': // I- insert before first non-blank
! 1302: dot_begin (); // 0
! 1303: dot_skip_over_ws ();
! 1304: //**** fall thru to ... 'i'
! 1305: case 'i': // i- insert before current char
! 1306: case VI_K_INSERT: // Cursor Key Insert
! 1307: dc_i:
! 1308: cmd_mode = 1; // start insrting
! 1309: psb ("-- Insert --");
! 1310: break;
! 1311: case 'J': // J- join current and next lines together
! 1312: do {
! 1313: dot_end (); // move to NL
! 1314: if (dot < end - 1) { // make sure not last char in text[]
! 1315: *dot++ = ' '; // replace NL with space
! 1316: while (isblnk(*dot)) { // delete leading WS
! 1317: dot_delete ();
! 1318: }
! 1319: }
! 1320: end_cmd_q (); // stop adding to q
! 1321: } while (cmdcnt-- > 2);
! 1322: break;
! 1323: case 'L': // L- goto bottom line on screen
! 1324: dot = end_screen ();
! 1325: if (cmdcnt > (rows - 1)) {
! 1326: cmdcnt = (rows - 1);
! 1327: }
! 1328: if (cmdcnt-- > 1) {
! 1329: do_cmd ('-');
! 1330: } // repeat cnt
! 1331: dot_begin ();
! 1332: dot_skip_over_ws ();
! 1333: break;
! 1334: case 'M': // M- goto middle line on screen
! 1335: dot = screenbegin;
! 1336: for (cnt = 0; cnt < (rows - 1) / 2; cnt++)
! 1337: dot = next_line (dot);
! 1338: break;
! 1339: case 'O': // O- open a empty line above
! 1340: // 0i\n ESC -i
! 1341: p = begin_line (dot);
! 1342: if (p[-1] == '\n') {
! 1343: dot_prev ();
! 1344: case 'o': // o- open a empty line below; Yes, I know it is in the middle of the "if (..."
! 1345: dot_end ();
! 1346: dot = char_insert (dot, '\n');
! 1347: } else {
! 1348: dot_begin (); // 0
! 1349: dot = char_insert (dot, '\n'); // i\n ESC
! 1350: dot_prev (); // -
! 1351: }
! 1352: goto dc_i;
! 1353: break;
! 1354: case 'R': // R- continuous Replace char
! 1355: dc5:
! 1356: cmd_mode = 2;
! 1357: psb ("-- Replace --");
! 1358: break;
! 1359: case 'X': // X- delete char before dot
! 1360: case 'x': // x- delete the current char
! 1361: case 's': // s- substitute the current char
! 1362: dir = (c == 'X') ? -1 : 0;
! 1363: do {
! 1364: if (dot[dir] != '\n') {
! 1365: if (c == 'X')
! 1366: dot--; // delete prev char
! 1367: dot = yank_delete (dot, dot, 0, YANKDEL); // delete char
! 1368: }
! 1369: } while (cmdcnt-- > 1);
! 1370: if (c == 's')
! 1371: goto dc_i; // start insrting
! 1372: end_cmd_q (); // stop adding to q
! 1373: break;
! 1374: case 'Z': // Z- if modified, {write}; exit
! 1375: // ZZ means to save file (if necessary), then exit
! 1376: c1 = get_one_char ();
! 1377: if (c1 != 'Z') {
! 1378: indicate_error (c);
! 1379: break;
! 1380: }
! 1381: if (file_modified == TRUE
! 1382: #ifdef BB_FEATURE_VI_READONLY
! 1383: && vi_readonly == FALSE
! 1384: && readonly == FALSE
! 1385: #endif /* BB_FEATURE_VI_READONLY */
! 1386: ) {
! 1387: cnt = file_write (cfn, text, end - 1);
! 1388: if (cnt == (end - 1 - text + 1)) {
! 1389: editing = 0;
! 1390: }
! 1391: } else {
! 1392: editing = 0;
! 1393: }
! 1394: break;
! 1395: case '^': // ^- move to first non-blank on line
! 1396: dot_begin ();
! 1397: dot_skip_over_ws ();
! 1398: break;
! 1399: case 'b': // b- back a word
! 1400: case 'e': // e- end of word
! 1401: dir = (c == 'b') ? BACK : FORWARD;
! 1402: do {
! 1403: if ((dot + dir) < text || (dot + dir) > end - 1)
! 1404: break;
! 1405: dot += dir;
! 1406: if (isspace(*dot)) {
! 1407: dot = skip_thing (dot, (c == 'e') ? 2 : 1, dir, S_OVER_WS);
! 1408: }
! 1409: if (isalnum(*dot) || *dot == '_') {
! 1410: dot = skip_thing (dot, 1, dir, S_END_ALNUM);
! 1411: } else if (ispunct(*dot)) {
! 1412: dot = skip_thing (dot, 1, dir, S_END_PUNCT);
! 1413: }
! 1414: } while (cmdcnt-- > 1);
! 1415: break;
! 1416: case 'c': // c- change something
! 1417: case 'd': // d- delete something
! 1418: #ifdef BB_FEATURE_VI_YANKMARK
! 1419: case 'y': // y- yank something
! 1420: case 'Y': // Y- Yank a line
! 1421: #endif /* BB_FEATURE_VI_YANKMARK */
! 1422: yf = YANKDEL; // assume either "c" or "d"
! 1423: #ifdef BB_FEATURE_VI_YANKMARK
! 1424: if (c == 'y' || c == 'Y')
! 1425: yf = YANKONLY;
! 1426: #endif /* BB_FEATURE_VI_YANKMARK */
! 1427: c1 = 'y';
! 1428: if (c != 'Y')
! 1429: c1 = get_one_char (); // get the type of thing to delete
! 1430: find_range (&p, &q, c1);
! 1431: if (c1 == 27) { // ESC- user changed mind and wants out
! 1432: c = c1 = 27; // Escape- do nothing
! 1433: } else if (strchr("wW", c1)) {
! 1434: if (c == 'c') {
! 1435: // don't include trailing WS as part of word
! 1436: while (isblnk(*q)) {
! 1437: if (q <= text || q[-1] == '\n')
! 1438: break;
! 1439: q--;
! 1440: }
! 1441: }
! 1442: dot = yank_delete (p, q, 0, yf); // delete word
! 1443: } else if (strchr("^0bBeEft$", c1)) {
! 1444: // single line copy text into a register and delete
! 1445: dot = yank_delete (p, q, 0, yf); // delete word
! 1446: } else if (strchr("cdykjHL%+-{}\r\n", c1)) {
! 1447: // multiple line copy text into a register and delete
! 1448: dot = yank_delete (p, q, 1, yf); // delete lines
! 1449: if (c == 'c') {
! 1450: dot = char_insert (dot, '\n');
! 1451: // on the last line of file don't move to prev line
! 1452: if (dot != (end - 1)) {
! 1453: dot_prev ();
! 1454: }
! 1455: } else if (c == 'd') {
! 1456: dot_begin ();
! 1457: dot_skip_over_ws ();
! 1458: }
! 1459: } else {
! 1460: // could not recognize object
! 1461: c = c1 = 27; // error-
! 1462: indicate_error (c);
! 1463: }
! 1464: if (c1 != 27) {
! 1465: // if CHANGING, not deleting, start inserting after the delete
! 1466: if (c == 'c') {
! 1467: strcpy ((char *) buf, "Change");
! 1468: goto dc_i; // start inserting
! 1469: }
! 1470: if (c == 'd') {
! 1471: strcpy ((char *) buf, "Delete");
! 1472: }
! 1473: #ifdef BB_FEATURE_VI_YANKMARK
! 1474: if (c == 'y' || c == 'Y') {
! 1475: strcpy ((char *) buf, "Yank");
! 1476: }
! 1477: p = reg[YDreg];
! 1478: q = p + strlen ((char *) p);
! 1479: for (cnt = 0; p <= q; p++) {
! 1480: if (*p == '\n')
! 1481: cnt++;
! 1482: }
! 1483: psb ("%s %d lines (%d chars) using [%c]",
! 1484: buf, cnt, strlen ((char *) reg[YDreg]), what_reg ());
! 1485: #endif /* BB_FEATURE_VI_YANKMARK */
! 1486: end_cmd_q (); // stop adding to q
! 1487: }
! 1488: break;
! 1489: case 'k': // k- goto prev line, same col
! 1490: case VI_K_UP: // cursor key Up
! 1491: do {
! 1492: dot_prev();
! 1493: dot = move_to_col(dot, ccol + offset); // try stay in same col
! 1494: } while (cmdcnt-- > 1);
! 1495: break;
! 1496: case 'r': // r- replace the current char with user input
! 1497: c1 = get_one_char (); // get the replacement char
! 1498: if (*dot != '\n') {
! 1499: *dot = c1;
! 1500: file_modified = TRUE; // has the file been modified
! 1501: }
! 1502: end_cmd_q (); // stop adding to q
! 1503: break;
! 1504: case 't': // t- move to char prior to next x
! 1505: last_forward_char = get_one_char ();
! 1506: do_cmd (';');
! 1507: if (*dot == last_forward_char)
! 1508: dot_left ();
! 1509: last_forward_char = 0;
! 1510: break;
! 1511: case 'w': // w- forward a word
! 1512: do {
! 1513: if (isalnum(*dot) || *dot == '_') { // we are on ALNUM
! 1514: dot = skip_thing(dot, 1, FORWARD, S_END_ALNUM);
! 1515: } else if (ispunct(*dot)) { // we are on PUNCT
! 1516: dot = skip_thing(dot, 1, FORWARD, S_END_PUNCT);
! 1517: }
! 1518: if (dot < end - 1)
! 1519: dot++; // move over word
! 1520: if (isspace(*dot)) {
! 1521: dot = skip_thing(dot, 2, FORWARD, S_OVER_WS);
! 1522: }
! 1523: } while (cmdcnt-- > 1);
! 1524: break;
! 1525: case 'z': // z-
! 1526: c1 = get_one_char (); // get the replacement char
! 1527: cnt = 0;
! 1528: if (c1 == '.')
! 1529: cnt = (rows - 2) / 2; // put dot at center
! 1530: if (c1 == '-')
! 1531: cnt = rows - 2; // put dot at bottom
! 1532: screenbegin = begin_line (dot); // start dot at top
! 1533: dot_scroll (cnt, -1);
! 1534: break;
! 1535: case '|': // |- move to column "cmdcnt"
! 1536: dot = move_to_col (dot, cmdcnt - 1); // try to move to column
! 1537: break;
! 1538: case '~': // ~- flip the case of letters a-z -> A-Z
! 1539: do {
! 1540: if (islower(*dot)) {
! 1541: *dot = toupper(*dot);
! 1542: file_modified = TRUE; // has the file been modified
! 1543: } else if (isupper(*dot)) {
! 1544: *dot = tolower(*dot);
! 1545: file_modified = TRUE; // has the file been modified
! 1546: }
! 1547: dot_right();
! 1548: } while (cmdcnt-- > 1);
! 1549: end_cmd_q (); // stop adding to q
! 1550: break;
! 1551: //----- The Cursor and Function Keys -----------------------------
! 1552: case VI_K_HOME: // Cursor Key Home
! 1553: dot_begin ();
! 1554: break;
! 1555: // The Fn keys could point to do_macro which could translate them
! 1556: case VI_K_FUN1: // Function Key F1
! 1557: case VI_K_FUN2: // Function Key F2
! 1558: case VI_K_FUN3: // Function Key F3
! 1559: case VI_K_FUN4: // Function Key F4
! 1560: case VI_K_FUN5: // Function Key F5
! 1561: case VI_K_FUN6: // Function Key F6
! 1562: case VI_K_FUN7: // Function Key F7
! 1563: case VI_K_FUN8: // Function Key F8
! 1564: case VI_K_FUN9: // Function Key F9
! 1565: case VI_K_FUN10: // Function Key F10
! 1566: case VI_K_FUN11: // Function Key F11
! 1567: case VI_K_FUN12: // Function Key F12
! 1568: break;
! 1569: }
! 1570:
! 1571: dc1:
! 1572: // if text[] just became empty, add back an empty line
! 1573: if (end == text) {
! 1574: (void) char_insert (text, '\n'); // start empty buf with dummy line
! 1575: dot = text;
! 1576: }
! 1577: // it is OK for dot to exactly equal to end, otherwise check dot validity
! 1578: if (dot != end) {
! 1579: dot = bound_dot (dot); // make sure "dot" is valid
! 1580: }
! 1581: #ifdef BB_FEATURE_VI_YANKMARK
! 1582: check_context (c); // update the current context
! 1583: #endif /* BB_FEATURE_VI_YANKMARK */
! 1584:
! 1585: if (!isdigit (c))
! 1586: cmdcnt = 0; // cmd was not a number, reset cmdcnt
! 1587: cnt = dot - begin_line (dot);
! 1588: // Try to stay off of the Newline
! 1589: if (*dot == '\n' && cnt > 0 && cmd_mode == 0)
! 1590: dot--;
! 1591: }
! 1592:
! 1593: //----- The Colon commands -------------------------------------
! 1594: #ifdef BB_FEATURE_VI_COLON
! 1595: static Byte *get_one_address(Byte * p, int *addr) // get colon addr, if present
! 1596: {
! 1597: int st;
! 1598: Byte *q;
! 1599:
! 1600: #ifdef BB_FEATURE_VI_YANKMARK
! 1601: Byte c;
! 1602: #endif /* BB_FEATURE_VI_YANKMARK */
! 1603: #ifdef BB_FEATURE_VI_SEARCH
! 1604: Byte *pat, buf[BUFSIZ];
! 1605: #endif /* BB_FEATURE_VI_SEARCH */
! 1606:
! 1607: *addr = -1; // assume no addr
! 1608: if (*p == '.') { // the current line
! 1609: p++;
! 1610: q = begin_line (dot);
! 1611: *addr = count_lines (text, q);
! 1612: #ifdef BB_FEATURE_VI_YANKMARK
! 1613: } else if (*p == '\'') { // is this a mark addr
! 1614: p++;
! 1615: c = tolower (*p);
! 1616: p++;
! 1617: if (c >= 'a' && c <= 'z') {
! 1618: // we have a mark
! 1619: c = c - 'a';
! 1620: q = mark[(int) c];
! 1621: if (q != NULL) { // is mark valid
! 1622: *addr = count_lines (text, q); // count lines
! 1623: }
! 1624: }
! 1625: #endif /* BB_FEATURE_VI_YANKMARK */
! 1626: #ifdef BB_FEATURE_VI_SEARCH
! 1627: } else if (*p == '/') { // a search pattern
! 1628: q = buf;
! 1629: for (p++; *p; p++) {
! 1630: if (*p == '/')
! 1631: break;
! 1632: *q++ = *p;
! 1633: *q = '\0';
! 1634: }
! 1635: pat = (Byte *) strdup ((char *) buf); // save copy of pattern
! 1636: if (*p == '/')
! 1637: p++;
! 1638: q = char_search (dot, pat, FORWARD, FULL);
! 1639: if (q != NULL) {
! 1640: *addr = count_lines (text, q);
! 1641: }
! 1642: free (pat);
! 1643: #endif /* BB_FEATURE_VI_SEARCH */
! 1644: } else if (*p == '$') { // the last line in file
! 1645: p++;
! 1646: q = begin_line (end - 1);
! 1647: *addr = count_lines (text, q);
! 1648: } else if (isdigit(*p)) { // specific line number
! 1649: sscanf ((char *) p, "%d%n", addr, &st);
! 1650: p += st;
! 1651: } else { // I don't reconise this
! 1652: // unrecognised address- assume -1
! 1653: *addr = -1;
! 1654: }
! 1655: return (p);
! 1656: }
! 1657:
! 1658: static Byte *get_address(Byte * p, int *b, int *e) // get two colon addrs, if present
! 1659: {
! 1660: //----- get the address' i.e., 1,3 'a,'b -----
! 1661: // get FIRST addr, if present
! 1662: while (isblnk (*p))
! 1663: p++; // skip over leading spaces
! 1664: if (*p == '%') { // alias for 1,$
! 1665: p++;
! 1666: *b = 1;
! 1667: *e = count_lines (text, end - 1);
! 1668: goto ga0;
! 1669: }
! 1670: p = get_one_address (p, b);
! 1671: while (isblnk (*p))
! 1672: p++;
! 1673: if (*p == ',') { // is there a address seperator
! 1674: p++;
! 1675: while (isblnk (*p))
! 1676: p++;
! 1677: // get SECOND addr, if present
! 1678: p = get_one_address (p, e);
! 1679: }
! 1680: ga0:
! 1681: while (isblnk (*p))
! 1682: p++; // skip over trailing spaces
! 1683: return (p);
! 1684: }
! 1685:
! 1686: static void colon(Byte * buf)
! 1687: {
! 1688: Byte c, *orig_buf, *buf1, *q, *r;
! 1689: Byte *fn, cmd[BUFSIZ], args[BUFSIZ];
! 1690: int i, l, li, ch, st, b, e;
! 1691: int useforce, forced;
! 1692: struct stat st_buf;
! 1693:
! 1694: // :3154 // if (-e line 3154) goto it else stay put
! 1695: // :4,33w! foo // write a portion of buffer to file "foo"
! 1696: // :w // write all of buffer to current file
! 1697: // :q // quit
! 1698: // :q! // quit- dont care about modified file
! 1699: // :'a,'z!sort -u // filter block through sort
! 1700: // :'f // goto mark "f"
! 1701: // :'fl // list literal the mark "f" line
! 1702: // :.r bar // read file "bar" into buffer before dot
! 1703: // :/123/,/abc/d // delete lines from "123" line to "abc" line
! 1704: // :/xyz/ // goto the "xyz" line
! 1705: // :s/find/replace/ // substitute pattern "find" with "replace"
! 1706: // :!<cmd> // run <cmd> then return
! 1707: //
! 1708: if (strlen ((char *) buf) <= 0)
! 1709: goto vc1;
! 1710: if (*buf == ':')
! 1711: buf++; // move past the ':'
! 1712:
! 1713: forced = useforce = FALSE;
! 1714: li = st = ch = i = 0;
! 1715: b = e = -1;
! 1716: q = text; // assume 1,$ for the range
! 1717: r = end - 1;
! 1718: li = count_lines (text, end - 1);
! 1719: fn = cfn; // default to current file
! 1720: memset (cmd, '\0', BUFSIZ); // clear cmd[]
! 1721: memset (args, '\0', BUFSIZ); // clear args[]
! 1722:
! 1723: // look for optional address(es) :. :1 :1,9 :'q,'a :%
! 1724: buf = get_address (buf, &b, &e);
! 1725:
! 1726: // remember orig command line
! 1727: orig_buf = buf;
! 1728:
! 1729: // get the COMMAND into cmd[]
! 1730: buf1 = cmd;
! 1731: while (*buf != '\0') {
! 1732: if (isspace (*buf))
! 1733: break;
! 1734: *buf1++ = *buf++;
! 1735: }
! 1736: // get any ARGuments
! 1737: while (isblnk (*buf))
! 1738: buf++;
! 1739: /* FIXED strcpy((char *) args, (char *) buf); */
! 1740: if (strlcpy((char *) args, (char *) buf, sizeof((char *)args)) > sizeof((char *)args)) err(1, "strlcpy overflow in function colon");
! 1741: buf1 = (Byte *)last_char_is((char *)cmd, '!');
! 1742: if (buf1) {
! 1743: useforce = TRUE;
! 1744: *buf1 = '\0'; // get rid of !
! 1745: }
! 1746: if (b >= 0) {
! 1747: // if there is only one addr, then the addr
! 1748: // is the line number of the single line the
! 1749: // user wants. So, reset the end
! 1750: // pointer to point at end of the "b" line
! 1751: q = find_line (b); // what line is #b
! 1752: r = end_line (q);
! 1753: li = 1;
! 1754: }
! 1755: if (e >= 0) {
! 1756: // we were given two addrs. change the
! 1757: // end pointer to the addr given by user.
! 1758: r = find_line (e); // what line is #e
! 1759: r = end_line (r);
! 1760: li = e - b + 1;
! 1761: }
! 1762: // ------------ now look for the command ------------
! 1763: i = strlen ((char *) cmd);
! 1764: if (i == 0) { // :123CR goto line #123
! 1765: if (b >= 0) {
! 1766: dot = find_line (b); // what line is #b
! 1767: dot_skip_over_ws ();
! 1768: }
! 1769: } else if (0) {
! 1770: // } else if (strncmp((char *) cmd, "!", 1) == 0) { // run a cmd
! 1771: // :!ls run the <cmd>
! 1772: (void) alarm(0); // wait for input- no alarms
! 1773: place_cursor (rows - 1, 0, FALSE); // go to Status line
! 1774: clear_to_eol (); // clear the line
! 1775: cookmode ();
! 1776: system((char *)orig_buf+1); // run the cmd
! 1777: rawmode ();
! 1778: Hit_Return (); // let user see results
! 1779: (void) alarm(3); // done waiting for input
! 1780: } else if (strncmp((char *) cmd, "=", i) == 0) { // where is the address
! 1781: if (b < 0) { // no addr given- use defaults
! 1782: b = e = count_lines (text, dot);
! 1783: }
! 1784: psb ("%d", b);
! 1785: } else if (strncasecmp((char *) cmd, "delete", i) == 0) { // delete lines
! 1786: if (b < 0) { // no addr given- use defaults
! 1787: q = begin_line (dot); // assume .,. for the range
! 1788: r = end_line (dot);
! 1789: }
! 1790: dot = yank_delete (q, r, 1, YANKDEL); // save, then delete lines
! 1791: dot_skip_over_ws ();
! 1792: } else if (0) {
! 1793: // } else if (strncasecmp((char *) cmd, "edit", i) == 0) { // Edit a file
! 1794: int sr;
! 1795: sr = 0;
! 1796: // don't edit, if the current file has been modified
! 1797: if (file_modified == TRUE && useforce != TRUE) {
! 1798: psbs ("No write since last change (:edit! overrides)");
! 1799: goto vc1;
! 1800: }
! 1801: if (strlen((char *)args) > 0) {
! 1802: // the user supplied a file name
! 1803: fn = args;
! 1804: } else if (cfn != 0 && strlen((char *)cfn) > 0) {
! 1805: // no user supplied name- use the current filename
! 1806: fn = cfn;
! 1807: goto vc5;
! 1808: } else {
! 1809: // no user file name, no current name- punt
! 1810: psbs ("No current filename");
! 1811: goto vc1;
! 1812: }
! 1813:
! 1814: // see if file exists- if not, its just a new file request
! 1815: if ((sr = stat((char *) fn, &st_buf)) < 0) {
! 1816: // This is just a request for a new file creation.
! 1817: // The file_insert below will fail but we get
! 1818: // an empty buffer with a file name. Then the "write"
! 1819: // command can do the create.
! 1820: } else {
! 1821: if ((st_buf.st_mode & (S_IFREG)) == 0) {
! 1822: // This is not a regular file
! 1823: psbs ("\"%s\" is not a regular file", fn);
! 1824: goto vc1;
! 1825: }
! 1826: if ((st_buf.st_mode & (S_IRUSR | S_IRGRP | S_IROTH)) == 0) {
! 1827: // dont have any read permissions
! 1828: psbs ("\"%s\" is not readable", fn);
! 1829: goto vc1;
! 1830: }
! 1831: }
! 1832:
! 1833: // There is a read-able regular file
! 1834: // make this the current file
! 1835: q = (Byte *) strdup ((char *) fn); // save the cfn
! 1836: if (cfn != 0)
! 1837: free (cfn); // free the old name
! 1838: cfn = q; // remember new cfn
! 1839:
! 1840: vc5:
! 1841: // delete all the contents of text[]
! 1842: new_text (2 * file_size (fn));
! 1843: screenbegin = dot = end = text;
! 1844:
! 1845: // insert new file
! 1846: ch = file_insert (fn, text, file_size (fn));
! 1847:
! 1848: if (ch < 1) {
! 1849: // start empty buf with dummy line
! 1850: (void) char_insert (text, '\n');
! 1851: ch = 1;
! 1852: }
! 1853: file_modified = FALSE;
! 1854: #ifdef BB_FEATURE_VI_YANKMARK
! 1855: if (Ureg >= 0 && Ureg < 28 && reg[Ureg] != 0) {
! 1856: free (reg[Ureg]); // free orig line reg- for 'U'
! 1857: reg[Ureg] = 0;
! 1858: }
! 1859: if (YDreg >= 0 && YDreg < 28 && reg[YDreg] != 0) {
! 1860: free (reg[YDreg]); // free default yank/delete register
! 1861: reg[YDreg] = 0;
! 1862: }
! 1863: for (li = 0; li < 28; li++) {
! 1864: mark[li] = 0;
! 1865: } // init the marks
! 1866: #endif /* BB_FEATURE_VI_YANKMARK */
! 1867: // how many lines in text[]?
! 1868: li = count_lines (text, end - 1);
! 1869: psb ("\"%s\"%s"
! 1870: #ifdef BB_FEATURE_VI_READONLY
! 1871: "%s"
! 1872: #endif /* BB_FEATURE_VI_READONLY */
! 1873: " %dL, %dC", cfn,
! 1874: (sr < 0 ? " [New file]" : ""),
! 1875: #ifdef BB_FEATURE_VI_READONLY
! 1876: ((vi_readonly == TRUE || readonly == TRUE) ? " [Read only]" : ""),
! 1877: #endif /* BB_FEATURE_VI_READONLY */
! 1878: li, ch);
! 1879: }
! 1880: else if (0) {
! 1881: // } else if (strncasecmp((char *) cmd, "file", i) == 0) { // what File is this
! 1882: if (b != -1 || e != -1) {
! 1883: ni ((Byte *) "No address allowed on this command");
! 1884: goto vc1;
! 1885: }
! 1886: if (strlen ((char *) args) > 0) {
! 1887: // user wants a new filename
! 1888: if (cfn != NULL)
! 1889: free (cfn);
! 1890: cfn = (Byte *) strdup ((char *) args);
! 1891: } else {
! 1892: // user wants file status info
! 1893: edit_status ();
! 1894: }
! 1895: } else if (strncasecmp ((char *) cmd, "features", i) == 0) { // what features are available
! 1896: // print out values of all features
! 1897: place_cursor (rows - 1, 0, FALSE); // go to Status line, bottom of screen
! 1898: clear_to_eol (); // clear the line
! 1899: cookmode ();
! 1900: show_help ();
! 1901: rawmode ();
! 1902: Hit_Return ();
! 1903: } else if (strncasecmp ((char *) cmd, "list", i) == 0) { // literal print line
! 1904: if (b < 0) { // no addr given- use defaults
! 1905: q = begin_line (dot); // assume .,. for the range
! 1906: r = end_line (dot);
! 1907: }
! 1908: place_cursor (rows - 1, 0, FALSE); // go to Status line, bottom of screen
! 1909: clear_to_eol (); // clear the line
! 1910: write (1, "\r\n", 2);
! 1911: for (; q <= r; q++) {
! 1912: c = *q;
! 1913: if (c > '~')
! 1914: standout_start ();
! 1915: if (c == '\n') {
! 1916: write (1, "$\r", 2);
! 1917: } else if (*q < ' ') {
! 1918: write (1, "^", 1);
! 1919: c += '@';
! 1920: }
! 1921: write (1, &c, 1);
! 1922: if (c > '~')
! 1923: standout_end ();
! 1924: }
! 1925: #ifdef BB_FEATURE_VI_SET
! 1926: vc2:
! 1927: #endif /* BB_FEATURE_VI_SET */
! 1928: Hit_Return ();
! 1929: } else if ((strncasecmp ((char *) cmd, "quit", i) == 0) || // Quit
! 1930: (strncasecmp ((char *) cmd, "next", i) == 0)) { // edit next file
! 1931: if (useforce == TRUE) {
! 1932: // force end of argv list
! 1933: if (*cmd == 'q') {
! 1934: optind = save_argc;
! 1935: }
! 1936: editing = 0;
! 1937: goto vc1;
! 1938: }
! 1939: // don't exit if the file been modified
! 1940: if (file_modified == TRUE) {
! 1941: psbs ("No write since last change (:%s! overrides)",
! 1942: (*cmd == 'q' ? "quit" : "next"));
! 1943: goto vc1;
! 1944: }
! 1945: // are there other file to edit
! 1946: /* if (*cmd == 'q' && optind < save_argc - 1) {
! 1947: psbs("%d more file to edit", (save_argc - optind - 1));
! 1948: goto vc1;
! 1949: }
! 1950: if (*cmd == 'n' && optind >= save_argc - 1) {
! 1951: psbs("No more files to edit");
! 1952: goto vc1;
! 1953: } */
! 1954: editing = 0;
! 1955: } else if (0) {
! 1956: // } else if (strncasecmp((char *) cmd, "read", i) == 0) { // read file into text[]
! 1957: fn = args;
! 1958: if (strlen ((char *) fn) <= 0) {
! 1959: psbs ("No filename given");
! 1960: goto vc1;
! 1961: }
! 1962: if (b < 0) { // no addr given- use defaults
! 1963: q = begin_line (dot); // assume "dot"
! 1964: }
! 1965: // read after current line- unless user said ":0r foo"
! 1966: if (b != 0)
! 1967: q = next_line (q);
! 1968: #ifdef BB_FEATURE_VI_READONLY
! 1969: l = readonly; // remember current files' status
! 1970: #endif
! 1971: ch = file_insert (fn, q, file_size (fn));
! 1972: #ifdef BB_FEATURE_VI_READONLY
! 1973: readonly = l;
! 1974: #endif
! 1975: if (ch < 0)
! 1976: goto vc1; // nothing was inserted
! 1977: // how many lines in text[]?
! 1978: li = count_lines (q, q + ch - 1);
! 1979: psb ("\"%s\""
! 1980: #ifdef BB_FEATURE_VI_READONLY
! 1981: "%s"
! 1982: #endif /* BB_FEATURE_VI_READONLY */
! 1983: " %dL, %dC", fn,
! 1984: #ifdef BB_FEATURE_VI_READONLY
! 1985: ((vi_readonly == TRUE || readonly == TRUE) ? " [Read only]" : ""),
! 1986: #endif /* BB_FEATURE_VI_READONLY */
! 1987: li, ch);
! 1988: if (ch > 0) {
! 1989: // if the insert is before "dot" then we need to update
! 1990: if (q <= dot)
! 1991: dot += ch;
! 1992: file_modified = TRUE;
! 1993: }
! 1994: } else if (strncasecmp ((char *) cmd, "rewind", i) == 0) { // rewind cmd line args
! 1995: if (file_modified == TRUE && useforce != TRUE) {
! 1996: psbs ("No write since last change (:rewind! overrides)");
! 1997: } else {
! 1998: // reset the filenames to edit
! 1999: optind = fn_start - 1;
! 2000: editing = 0;
! 2001: }
! 2002: #ifdef BB_FEATURE_VI_SET
! 2003: } else if (strncasecmp ((char *) cmd, "set", i) == 0) { // set or clear features
! 2004: i = 0; // offset into args
! 2005: if (strlen ((char *) args) == 0) {
! 2006: // print out values of all options
! 2007: place_cursor (rows - 1, 0, FALSE); // go to Status line, bottom of screen
! 2008: clear_to_eol (); // clear the line
! 2009: printf ("----------------------------------------\r\n");
! 2010: #ifdef BB_FEATURE_VI_SETOPTS
! 2011: if (!autoindent)
! 2012: printf ("no");
! 2013: printf ("autoindent ");
! 2014: if (!err_method)
! 2015: printf ("no");
! 2016: printf ("flash ");
! 2017: if (!ignorecase)
! 2018: printf ("no");
! 2019: printf ("ignorecase ");
! 2020: if (!showmatch)
! 2021: printf ("no");
! 2022: printf ("showmatch ");
! 2023: printf ("tabstop=%d ", tabstop);
! 2024: #endif /* BB_FEATURE_VI_SETOPTS */
! 2025: printf ("\r\n");
! 2026: goto vc2;
! 2027: }
! 2028: if (strncasecmp ((char *) args, "no", 2) == 0)
! 2029: i = 2; // ":set noautoindent"
! 2030: #ifdef BB_FEATURE_VI_SETOPTS
! 2031: if (strncasecmp ((char *) args + i, "autoindent", 10) == 0 ||
! 2032: strncasecmp ((char *) args + i, "ai", 2) == 0) {
! 2033: autoindent = (i == 2) ? 0 : 1;
! 2034: }
! 2035: if (strncasecmp ((char *) args + i, "flash", 5) == 0 ||
! 2036: strncasecmp ((char *) args + i, "fl", 2) == 0) {
! 2037: err_method = (i == 2) ? 0 : 1;
! 2038: }
! 2039: if (strncasecmp ((char *) args + i, "ignorecase", 10) == 0 ||
! 2040: strncasecmp ((char *) args + i, "ic", 2) == 0) {
! 2041: ignorecase = (i == 2) ? 0 : 1;
! 2042: }
! 2043: if (strncasecmp ((char *) args + i, "showmatch", 9) == 0 ||
! 2044: strncasecmp ((char *) args + i, "sm", 2) == 0) {
! 2045: showmatch = (i == 2) ? 0 : 1;
! 2046: }
! 2047: if (strncasecmp ((char *) args + i, "tabstop", 7) == 0) {
! 2048: sscanf (strchr ((char *) args + i, '='), "=%d", &ch);
! 2049: if (ch > 0 && ch < columns - 1)
! 2050: tabstop = ch;
! 2051: }
! 2052: #endif /* BB_FEATURE_VI_SETOPTS */
! 2053: #endif /* BB_FEATURE_VI_SET */
! 2054: #ifdef BB_FEATURE_VI_SEARCH
! 2055: } else if (strncasecmp ((char *) cmd, "s", 1) == 0) { // substitute a pattern with a replacement pattern
! 2056: Byte *ls, *F, *R;
! 2057: int gflag;
! 2058:
! 2059: // F points to the "find" pattern
! 2060: // R points to the "replace" pattern
! 2061: // replace the cmd line delimiters "/" with NULLs
! 2062: gflag = 0; // global replace flag
! 2063: c = orig_buf[1]; // what is the delimiter
! 2064: F = orig_buf + 2; // start of "find"
! 2065: R = (Byte *) strchr ((char *) F, c); // middle delimiter
! 2066: if (!R) goto colon_s_fail;
! 2067: *R++ = '\0'; // terminate "find"
! 2068: buf1 = (Byte *) strchr ((char *) R, c);
! 2069: if (!buf1) goto colon_s_fail;
! 2070: *buf1++ = '\0'; // terminate "replace"
! 2071: if (*buf1 == 'g') { // :s/foo/bar/g
! 2072: buf1++;
! 2073: gflag++; // turn on gflag
! 2074: }
! 2075: q = begin_line (q);
! 2076: if (b < 0) { // maybe :s/foo/bar/
! 2077: q = begin_line (dot); // start with cur line
! 2078: b = count_lines (text, q); // cur line number
! 2079: }
! 2080: if (e < 0)
! 2081: e = b; // maybe :.s/foo/bar/
! 2082: for (i = b; i <= e; i++) { // so, :20,23 s \0 find \0 replace \0
! 2083: ls = q; // orig line start
! 2084: vc4:
! 2085: buf1 = char_search (q, F, FORWARD, LIMITED); // search cur line only for "find"
! 2086: if (buf1 != NULL) {
! 2087: // we found the "find" pattern- delete it
! 2088: (void) text_hole_delete (buf1, buf1 + strlen ((char *) F) - 1);
! 2089: // inset the "replace" patern
! 2090: (void) string_insert (buf1, R); // insert the string
! 2091: // check for "global" :s/foo/bar/g
! 2092: if (gflag == 1) {
! 2093: if ((buf1 + strlen ((char *) R)) < end_line(ls)) {
! 2094: q = buf1 + strlen ((char *) R);
! 2095: goto vc4; // don't let q move past cur line
! 2096: }
! 2097: }
! 2098: }
! 2099: q = next_line (ls);
! 2100: }
! 2101: #endif /* BB_FEATURE_VI_SEARCH */
! 2102: } else if (strncasecmp ((char *) cmd, "version", i) == 0) { // show software version
! 2103: psb ("%s", vi_Version);
! 2104: } else if ((strncasecmp ((char *) cmd, "write", i) == 0) || // write text to file
! 2105: (strncasecmp ((char *) cmd, "wq", i) == 0)) { // write text to file
! 2106: // is there a file name to write to?
! 2107: /* if (strlen((char *) args) > 0) {
! 2108: fn = args;
! 2109: } */
! 2110: #ifdef BB_FEATURE_VI_READONLY
! 2111: if ((vi_readonly == TRUE || readonly == TRUE) && useforce == FALSE) {
! 2112: psbs ("\"%s\" File is read only", fn);
! 2113: goto vc3;
! 2114: }
! 2115: #endif /* BB_FEATURE_VI_READONLY */
! 2116: // how many lines in text[]?
! 2117: li = count_lines (q, r);
! 2118: ch = r - q + 1;
! 2119: // see if file exists- if not, its just a new file request
! 2120: if (useforce == TRUE) {
! 2121: // if "fn" is not write-able, chmod u+w
! 2122: // sprintf(syscmd, "chmod u+w %s", fn);
! 2123: // system(syscmd);
! 2124: forced = TRUE;
! 2125: }
! 2126: l = file_write (fn, q, r);
! 2127: if (useforce == TRUE && forced == TRUE) {
! 2128: // chmod u-w
! 2129: // sprintf(syscmd, "chmod u-w %s", fn);
! 2130: // system(syscmd);
! 2131: forced = FALSE;
! 2132: }
! 2133: psb ("\"%s\" %dL, %dC", fn, li, l);
! 2134: if (q == text && r == end - 1 && l == ch)
! 2135: file_modified = FALSE;
! 2136: if (cmd[1] == 'q' && l == ch) {
! 2137: editing = 0;
! 2138: }
! 2139: #ifdef BB_FEATURE_VI_READONLY
! 2140: vc3:;
! 2141: #endif /* BB_FEATURE_VI_READONLY */
! 2142: #ifdef BB_FEATURE_VI_YANKMARK
! 2143: } else if (strncasecmp ((char *) cmd, "yank", i) == 0) { // yank lines
! 2144: if (b < 0) { // no addr given- use defaults
! 2145: q = begin_line (dot); // assume .,. for the range
! 2146: r = end_line (dot);
! 2147: }
! 2148: text_yank (q, r, YDreg);
! 2149: li = count_lines (q, r);
! 2150: psb ("Yank %d lines (%d chars) into [%c]",
! 2151: li, strlen ((char *) reg[YDreg]), what_reg ());
! 2152: #endif /* BB_FEATURE_VI_YANKMARK */
! 2153: } else {
! 2154: // cmd unknown
! 2155: ni ((Byte *) cmd);
! 2156: }
! 2157: vc1:
! 2158: dot = bound_dot (dot); // make sure "dot" is valid
! 2159: return;
! 2160: #ifdef BB_FEATURE_VI_SEARCH
! 2161: colon_s_fail:
! 2162: psb (":s expression missing delimiters");
! 2163: return;
! 2164: #endif
! 2165:
! 2166: }
! 2167:
! 2168: static void Hit_Return(void)
! 2169: {
! 2170: char c;
! 2171:
! 2172: standout_start (); // start reverse video
! 2173: write (1, "[Hit return to continue]", 24);
! 2174: standout_end (); // end reverse video
! 2175: while ((c = get_one_char ()) != '\n' && c != '\r') /*do nothing */
! 2176: ;
! 2177: redraw (TRUE); // force redraw all
! 2178: }
! 2179: #endif /* BB_FEATURE_VI_COLON */
! 2180:
! 2181: //----- Synchronize the cursor to Dot --------------------------
! 2182: static void sync_cursor(Byte * d, int *row, int *col)
! 2183: {
! 2184: Byte *beg_cur, *end_cur; // begin and end of "d" line
! 2185: Byte *beg_scr, *end_scr; // begin and end of screen
! 2186: Byte *tp;
! 2187: int cnt, ro, co;
! 2188:
! 2189: beg_cur = begin_line (d); // first char of cur line
! 2190: end_cur = end_line (d); // last char of cur line
! 2191:
! 2192: beg_scr = end_scr = screenbegin; // first char of screen
! 2193: end_scr = end_screen (); // last char of screen
! 2194:
! 2195: if (beg_cur < screenbegin) {
! 2196: // "d" is before top line on screen
! 2197: // how many lines do we have to move
! 2198: cnt = count_lines (beg_cur, screenbegin);
! 2199: sc1:
! 2200: screenbegin = beg_cur;
! 2201: if (cnt > (rows - 1) / 2) {
! 2202: // we moved too many lines. put "dot" in middle of screen
! 2203: for (cnt = 0; cnt < (rows - 1) / 2; cnt++) {
! 2204: screenbegin = prev_line (screenbegin);
! 2205: }
! 2206: }
! 2207: } else if (beg_cur > end_scr) {
! 2208: // "d" is after bottom line on screen
! 2209: // how many lines do we have to move
! 2210: cnt = count_lines (end_scr, beg_cur);
! 2211: if (cnt > (rows - 1) / 2)
! 2212: goto sc1; // too many lines
! 2213: for (ro = 0; ro < cnt - 1; ro++) {
! 2214: // move screen begin the same amount
! 2215: screenbegin = next_line (screenbegin);
! 2216: // now, move the end of screen
! 2217: end_scr = next_line (end_scr);
! 2218: end_scr = end_line (end_scr);
! 2219: }
! 2220: }
! 2221: // "d" is on screen- find out which row
! 2222: tp = screenbegin;
! 2223: for (ro = 0; ro < rows - 1; ro++) { // drive "ro" to correct row
! 2224: if (tp == beg_cur)
! 2225: break;
! 2226: tp = next_line (tp);
! 2227: }
! 2228:
! 2229: // find out what col "d" is on
! 2230: co = 0;
! 2231: do { // drive "co" to correct column
! 2232: if (*tp == '\n' || *tp == '\0')
! 2233: break;
! 2234: if (*tp == '\t') {
! 2235: // 7 - (co % 8 )
! 2236: co += ((tabstop - 1) - (co % tabstop));
! 2237: } else if (*tp < ' ') {
! 2238: co++; // display as ^X, use 2 columns
! 2239: }
! 2240: } while (tp++ < d && ++co);
! 2241:
! 2242: // "co" is the column where "dot" is.
! 2243: // The screen has "columns" columns.
! 2244: // The currently displayed columns are 0+offset -- columns+ofset
! 2245: // |-------------------------------------------------------------|
! 2246: // ^ ^ ^
! 2247: // offset | |------- columns ----------------|
! 2248: //
! 2249: // If "co" is already in this range then we do not have to adjust offset
! 2250: // but, we do have to subtract the "offset" bias from "co".
! 2251: // If "co" is outside this range then we have to change "offset".
! 2252: // If the first char of a line is a tab the cursor will try to stay
! 2253: // in column 7, but we have to set offset to 0.
! 2254:
! 2255: if (co < 0 + offset) {
! 2256: offset = co;
! 2257: }
! 2258: if (co >= columns + offset) {
! 2259: offset = co - columns + 1;
! 2260: }
! 2261: // if the first char of the line is a tab, and "dot" is sitting on it
! 2262: // force offset to 0.
! 2263: if (d == beg_cur && *d == '\t') {
! 2264: offset = 0;
! 2265: }
! 2266: co -= offset;
! 2267:
! 2268: *row = ro;
! 2269: *col = co;
! 2270: }
! 2271:
! 2272: //----- Text Movement Routines ---------------------------------
! 2273: static Byte *begin_line(Byte * p) // return pointer to first char cur line
! 2274: {
! 2275: while (p > text && p[-1] != '\n')
! 2276: p--; // go to cur line B-o-l
! 2277: return (p);
! 2278: }
! 2279:
! 2280: static Byte *end_line(Byte * p) // return pointer to NL of cur line line
! 2281: {
! 2282: while (p < end - 1 && *p != '\n')
! 2283: p++; // go to cur line E-o-l
! 2284: return (p);
! 2285: }
! 2286:
! 2287: static Byte *dollar_line(Byte * p) // return pointer to just before NL line
! 2288: {
! 2289: while (p < end - 1 && *p != '\n')
! 2290: p++; // go to cur line E-o-l
! 2291: // Try to stay off of the Newline
! 2292: if (*p == '\n' && (p - begin_line (p)) > 0)
! 2293: p--;
! 2294: return (p);
! 2295: }
! 2296:
! 2297: static Byte *prev_line(Byte * p) // return pointer first char prev line
! 2298: {
! 2299: p = begin_line (p); // goto begining of cur line
! 2300: if (p[-1] == '\n' && p > text)
! 2301: p--; // step to prev line
! 2302: p = begin_line (p); // goto begining of prev line
! 2303: return (p);
! 2304: }
! 2305:
! 2306: static Byte *next_line(Byte * p) // return pointer first char next line
! 2307: {
! 2308: p = end_line (p);
! 2309: if (*p == '\n' && p < end - 1)
! 2310: p++; // step to next line
! 2311: return (p);
! 2312: }
! 2313:
! 2314: //----- Text Information Routines ------------------------------
! 2315: static Byte *end_screen(void)
! 2316: {
! 2317: Byte *q;
! 2318: int cnt;
! 2319:
! 2320: // find new bottom line
! 2321: q = screenbegin;
! 2322: for (cnt = 0; cnt < rows - 2; cnt++)
! 2323: q = next_line (q);
! 2324: q = end_line (q);
! 2325: return (q);
! 2326: }
! 2327:
! 2328: static int count_lines(Byte * start, Byte * stop) // count line from start to stop
! 2329: {
! 2330: Byte *q;
! 2331: int cnt;
! 2332:
! 2333: if (stop < start) { // start and stop are backwards- reverse them
! 2334: q = start;
! 2335: start = stop;
! 2336: stop = q;
! 2337: }
! 2338: cnt = 0;
! 2339: stop = end_line (stop); // get to end of this line
! 2340: for (q = start; q <= stop && q <= end - 1; q++) {
! 2341: if (*q == '\n')
! 2342: cnt++;
! 2343: }
! 2344: return (cnt);
! 2345: }
! 2346:
! 2347: static Byte *find_line(int li) // find begining of line #li
! 2348: {
! 2349: Byte *q;
! 2350:
! 2351: for (q = text; li > 1; li--) {
! 2352: q = next_line (q);
! 2353: }
! 2354: return (q);
! 2355: }
! 2356:
! 2357: //----- Dot Movement Routines ----------------------------------
! 2358: static void dot_left(void)
! 2359: {
! 2360: if (dot > text && dot[-1] != '\n')
! 2361: dot--;
! 2362: }
! 2363:
! 2364: static void dot_right(void)
! 2365: {
! 2366: if (dot < end - 1 && *dot != '\n')
! 2367: dot++;
! 2368: }
! 2369:
! 2370: static void dot_begin(void)
! 2371: {
! 2372: dot = begin_line (dot); // return pointer to first char cur line
! 2373: }
! 2374:
! 2375: static void dot_end(void)
! 2376: {
! 2377: dot = end_line (dot); // return pointer to last char cur line
! 2378: }
! 2379:
! 2380: static Byte *move_to_col(Byte * p, int l)
! 2381: {
! 2382: int co;
! 2383:
! 2384: p = begin_line (p);
! 2385: co = 0;
! 2386: do {
! 2387: if (*p == '\n' || *p == '\0')
! 2388: break;
! 2389: if (*p == '\t') {
! 2390: // 7 - (co % 8 )
! 2391: co += ((tabstop - 1) - (co % tabstop));
! 2392: } else if (*p < ' ') {
! 2393: co++; // display as ^X, use 2 columns
! 2394: }
! 2395: } while (++co <= l && p++ < end);
! 2396: return (p);
! 2397: }
! 2398:
! 2399: static void dot_next(void)
! 2400: {
! 2401: dot = next_line (dot);
! 2402: }
! 2403:
! 2404: static void dot_prev(void)
! 2405: {
! 2406: dot = prev_line (dot);
! 2407: }
! 2408:
! 2409: static void dot_scroll(int cnt, int dir)
! 2410: {
! 2411: Byte *q;
! 2412:
! 2413: for (; cnt > 0; cnt--) {
! 2414: if (dir < 0) {
! 2415: // scroll Backwards
! 2416: // ctrl-Y scroll up one line
! 2417: screenbegin = prev_line (screenbegin);
! 2418: } else {
! 2419: // scroll Forwards
! 2420: // ctrl-E scroll down one line
! 2421: screenbegin = next_line (screenbegin);
! 2422: }
! 2423: }
! 2424: // make sure "dot" stays on the screen so we dont scroll off
! 2425: if (dot < screenbegin)
! 2426: dot = screenbegin;
! 2427: q = end_screen (); // find new bottom line
! 2428: if (dot > q)
! 2429: dot = begin_line (q); // is dot is below bottom line?
! 2430: dot_skip_over_ws ();
! 2431: }
! 2432:
! 2433: static void dot_skip_over_ws(void)
! 2434: {
! 2435: // skip WS
! 2436: while (isspace (*dot) && *dot != '\n' && dot < end - 1)
! 2437: dot++;
! 2438: }
! 2439:
! 2440: static void dot_delete(void) // delete the char at 'dot'
! 2441: {
! 2442: (void) text_hole_delete (dot, dot);
! 2443: }
! 2444:
! 2445: static Byte *bound_dot(Byte * p) // make sure text[0] <= P < "end"
! 2446: {
! 2447: if (p >= end && end > text) {
! 2448: p = end - 1;
! 2449: indicate_error ('1');
! 2450: }
! 2451: if (p < text) {
! 2452: p = text;
! 2453: indicate_error ('2');
! 2454: }
! 2455: return (p);
! 2456: }
! 2457:
! 2458: //----- Helper Utility Routines --------------------------------
! 2459:
! 2460: //----------------------------------------------------------------
! 2461: //----- Char Routines --------------------------------------------
! 2462: /* Chars that are part of a word-
! 2463: * 0123456789_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
! 2464: * Chars that are Not part of a word (stoppers)
! 2465: * !"#$%&'()*+,-./:;<=>?@[\]^`{|}~
! 2466: * Chars that are WhiteSpace
! 2467: * TAB NEWLINE VT FF RETURN SPACE
! 2468: * DO NOT COUNT NEWLINE AS WHITESPACE
! 2469: */
! 2470:
! 2471: static Byte *new_screen(int ro, int co)
! 2472: {
! 2473: int li;
! 2474:
! 2475: if (screen != 0)
! 2476: free (screen);
! 2477: screensize = ro * co + 8;
! 2478: screen = (Byte *) malloc (screensize);
! 2479: // initialize the new screen. assume this will be a empty file.
! 2480: screen_erase ();
! 2481: // non-existant text[] lines start with a tilde (~).
! 2482: for (li = 1; li < ro - 1; li++) {
! 2483: screen[(li * co) + 0] = '~';
! 2484: }
! 2485: return (screen);
! 2486: }
! 2487:
! 2488: static Byte *new_text(int size)
! 2489: {
! 2490: if (size < 10240)
! 2491: size = 10240; // have a minimum size for new files
! 2492: if (text != 0) {
! 2493: //text -= 4;
! 2494: free (text);
! 2495: }
! 2496: text = (Byte *) malloc (size + 8);
! 2497: memset (text, '\0', size); // clear new text[]
! 2498: //text += 4; // leave some room for "oops"
! 2499: textend = text + size - 1;
! 2500: //textend -= 4; // leave some root for "oops"
! 2501: return (text);
! 2502: }
! 2503:
! 2504: #ifdef BB_FEATURE_VI_SEARCH
! 2505: static int mycmp(Byte * s1, Byte * s2, int len)
! 2506: {
! 2507: int i;
! 2508:
! 2509: i = strncmp ((char *) s1, (char *) s2, len);
! 2510: #ifdef BB_FEATURE_VI_SETOPTS
! 2511: if (ignorecase) {
! 2512: i = strncasecmp ((char *) s1, (char *) s2, len);
! 2513: }
! 2514: #endif /* BB_FEATURE_VI_SETOPTS */
! 2515: return (i);
! 2516: }
! 2517:
! 2518: static Byte *char_search(Byte * p, Byte * pat, int dir, int range) // search for pattern starting at p
! 2519: {
! 2520: #ifndef REGEX_SEARCH
! 2521: Byte *start, *stop;
! 2522: int len;
! 2523:
! 2524: len = strlen ((char *) pat);
! 2525: if (dir == FORWARD) {
! 2526: stop = end - 1; // assume range is p - end-1
! 2527: if (range == LIMITED)
! 2528: stop = next_line (p); // range is to next line
! 2529: for (start = p; start < stop; start++) {
! 2530: if (mycmp (start, pat, len) == 0) {
! 2531: return (start);
! 2532: }
! 2533: }
! 2534: } else if (dir == BACK) {
! 2535: stop = text; // assume range is text - p
! 2536: if (range == LIMITED)
! 2537: stop = prev_line (p); // range is to prev line
! 2538: for (start = p - len; start >= stop; start--) {
! 2539: if (mycmp (start, pat, len) == 0) {
! 2540: return (start);
! 2541: }
! 2542: }
! 2543: }
! 2544: // pattern not found
! 2545: return (NULL);
! 2546: #else /*REGEX_SEARCH */
! 2547: char *q;
! 2548: struct re_pattern_buffer preg;
! 2549: int i;
! 2550: int size, range;
! 2551:
! 2552: re_syntax_options = RE_SYNTAX_POSIX_EXTENDED;
! 2553: preg.translate = 0;
! 2554: preg.fastmap = 0;
! 2555: preg.buffer = 0;
! 2556: preg.allocated = 0;
! 2557:
! 2558: // assume a LIMITED forward search
! 2559: q = next_line (p);
! 2560: q = end_line (q);
! 2561: q = end - 1;
! 2562: if (dir == BACK) {
! 2563: q = prev_line (p);
! 2564: q = text;
! 2565: }
! 2566: // count the number of chars to search over, forward or backward
! 2567: size = q - p;
! 2568: if (size < 0)
! 2569: size = p - q;
! 2570: // RANGE could be negative if we are searching backwards
! 2571: range = q - p;
! 2572:
! 2573: q = (char *) re_compile_pattern (pat, strlen ((char *) pat), &preg);
! 2574: if (q != 0) {
! 2575: // The pattern was not compiled
! 2576: psbs ("bad search pattern: \"%s\": %s", pat, q);
! 2577: i = 0; // return p if pattern not compiled
! 2578: goto cs1;
! 2579: }
! 2580:
! 2581: q = p;
! 2582: if (range < 0) {
! 2583: q = p - size;
! 2584: if (q < text)
! 2585: q = text;
! 2586: }
! 2587: // search for the compiled pattern, preg, in p[]
! 2588: // range < 0- search backward
! 2589: // range > 0- search forward
! 2590: // 0 < start < size
! 2591: // re_search() < 0 not found or error
! 2592: // re_search() > 0 index of found pattern
! 2593: // struct pattern char int int int struct reg
! 2594: // re_search (*pattern_buffer, *string, size, start, range, *regs)
! 2595: i = re_search (&preg, q, size, 0, range, 0);
! 2596: if (i == -1) {
! 2597: p = 0;
! 2598: i = 0; // return NULL if pattern not found
! 2599: }
! 2600: cs1:
! 2601: if (dir == FORWARD) {
! 2602: p = p + i;
! 2603: } else {
! 2604: p = p - i;
! 2605: }
! 2606: return (p);
! 2607: #endif /*REGEX_SEARCH */
! 2608: }
! 2609: #endif /* BB_FEATURE_VI_SEARCH */
! 2610:
! 2611: static Byte *char_insert(Byte * p, Byte c) // insert the char c at 'p'
! 2612: {
! 2613: if (c == 22) { // Is this an ctrl-V?
! 2614: p = stupid_insert (p, '^'); // use ^ to indicate literal next
! 2615: p--; // backup onto ^
! 2616: refresh (FALSE); // show the ^
! 2617: c = get_one_char ();
! 2618: *p = c;
! 2619: p++;
! 2620: file_modified = TRUE; // has the file been modified
! 2621: } else if (c == 27) { // Is this an ESC?
! 2622: cmd_mode = 0;
! 2623: cmdcnt = 0;
! 2624: end_cmd_q (); // stop adding to q
! 2625: strcpy ((char *) status_buffer, " "); // clear the status buffer
! 2626: if ((p[-1] != '\n') && (dot > text)) {
! 2627: p--;
! 2628: }
! 2629: } else if (c == erase_char) { // Is this a BS
! 2630: // 123456789
! 2631: if ((p[-1] != '\n') && (dot > text)) {
! 2632: p--;
! 2633: p = text_hole_delete (p, p); // shrink buffer 1 char
! 2634: #ifdef BB_FEATURE_VI_DOT_CMD
! 2635: // also rmove char from last_modifying_cmd
! 2636: if (last_modifying_cmd && (strlen((char *) last_modifying_cmd) > 0)) {
! 2637: Byte *q;
! 2638:
! 2639: q = last_modifying_cmd;
! 2640: q[strlen ((char *) q) - 1] = '\0'; // erase BS
! 2641: q[strlen ((char *) q) - 1] = '\0'; // erase prev char
! 2642: }
! 2643: #endif /* BB_FEATURE_VI_DOT_CMD */
! 2644: }
! 2645: } else {
! 2646: // insert a char into text[]
! 2647: Byte *sp; // "save p"
! 2648:
! 2649: if (c == 13)
! 2650: c = '\n'; // translate \r to \n
! 2651: sp = p; // remember addr of insert
! 2652: p = stupid_insert (p, c); // insert the char
! 2653: #ifdef BB_FEATURE_VI_SETOPTS
! 2654: if (showmatch && strchr (")]}", *sp) != NULL) {
! 2655: showmatching (sp);
! 2656: }
! 2657: if (autoindent && c == '\n') { // auto indent the new line
! 2658: Byte *q;
! 2659:
! 2660: q = prev_line (p); // use prev line as templet
! 2661: for (; isblnk (*q); q++) {
! 2662: p = stupid_insert (p, *q); // insert the char
! 2663: }
! 2664: }
! 2665: #endif /* BB_FEATURE_VI_SETOPTS */
! 2666: }
! 2667: return (p);
! 2668: }
! 2669:
! 2670: static Byte *stupid_insert(Byte * p, Byte c) // stupidly insert the char c at 'p'
! 2671: {
! 2672: p = text_hole_make (p, 1);
! 2673: if (p != 0) {
! 2674: *p = c;
! 2675: file_modified = TRUE; // has the file been modified
! 2676: p++;
! 2677: }
! 2678: return (p);
! 2679: }
! 2680:
! 2681: static Byte find_range(Byte ** start, Byte ** stop, Byte c)
! 2682: {
! 2683: Byte *save_dot, *p, *q;
! 2684: int cnt;
! 2685:
! 2686: save_dot = dot;
! 2687: p = q = dot;
! 2688:
! 2689: if (strchr ("cdy><", c)) {
! 2690: // these cmds operate on whole lines
! 2691: p = q = begin_line (p);
! 2692: for (cnt = 1; cnt < cmdcnt; cnt++) {
! 2693: q = next_line (q);
! 2694: }
! 2695: q = end_line (q);
! 2696: } else if (strchr ("^%$0bBeEft", c)) {
! 2697: // These cmds operate on char positions
! 2698: do_cmd (c); // execute movement cmd
! 2699: q = dot;
! 2700: } else if (strchr ("wW", c)) {
! 2701: do_cmd (c); // execute movement cmd
! 2702: if (dot > text)
! 2703: dot--; // move back off of next word
! 2704: if (dot > text && *dot == '\n')
! 2705: dot--; // stay off NL
! 2706: q = dot;
! 2707: } else if (strchr ("H-k{", c)) {
! 2708: // these operate on multi-lines backwards
! 2709: q = end_line (dot); // find NL
! 2710: do_cmd (c); // execute movement cmd
! 2711: dot_begin ();
! 2712: p = dot;
! 2713: } else if (strchr ("L+j}\r\n", c)) {
! 2714: // these operate on multi-lines forwards
! 2715: p = begin_line (dot);
! 2716: do_cmd (c); // execute movement cmd
! 2717: dot_end (); // find NL
! 2718: q = dot;
! 2719: } else {
! 2720: c = 27; // error- return an ESC char
! 2721: //break;
! 2722: }
! 2723: *start = p;
! 2724: *stop = q;
! 2725: if (q < p) {
! 2726: *start = q;
! 2727: *stop = p;
! 2728: }
! 2729: dot = save_dot;
! 2730: return (c);
! 2731: }
! 2732:
! 2733: static int st_test(Byte * p, int type, int dir, Byte * tested)
! 2734: {
! 2735: Byte c, c0, ci;
! 2736: int test, inc;
! 2737:
! 2738: inc = dir;
! 2739: c = c0 = p[0];
! 2740: ci = p[inc];
! 2741: test = 0;
! 2742:
! 2743: if (type == S_BEFORE_WS) {
! 2744: c = ci;
! 2745: test = ((!isspace (c)) || c == '\n');
! 2746: }
! 2747: if (type == S_TO_WS) {
! 2748: c = c0;
! 2749: test = ((!isspace (c)) || c == '\n');
! 2750: }
! 2751: if (type == S_OVER_WS) {
! 2752: c = c0;
! 2753: test = ((isspace (c)));
! 2754: }
! 2755: if (type == S_END_PUNCT) {
! 2756: c = ci;
! 2757: test = ((ispunct (c)));
! 2758: }
! 2759: if (type == S_END_ALNUM) {
! 2760: c = ci;
! 2761: test = ((isalnum (c)) || c == '_');
! 2762: }
! 2763: *tested = c;
! 2764: return (test);
! 2765: }
! 2766:
! 2767: static Byte *skip_thing(Byte * p, int linecnt, int dir, int type)
! 2768: {
! 2769: Byte c;
! 2770:
! 2771: while (st_test(p, type, dir, &c)) {
! 2772: // make sure we limit search to correct number of lines
! 2773: if (c == '\n' && --linecnt < 1)
! 2774: break;
! 2775: if (dir >= 0 && p >= end - 1)
! 2776: break;
! 2777: if (dir < 0 && p <= text)
! 2778: break;
! 2779: p += dir; // move to next char
! 2780: }
! 2781: return (p);
! 2782: }
! 2783:
! 2784: // find matching char of pair () [] {}
! 2785: static Byte *find_pair(Byte * p, Byte c)
! 2786: {
! 2787: Byte match, *q;
! 2788: int dir, level;
! 2789:
! 2790: match = ')';
! 2791: level = 1;
! 2792: dir = 1; // assume forward
! 2793: switch (c) {
! 2794: case '(':
! 2795: match = ')';
! 2796: break;
! 2797: case '[':
! 2798: match = ']';
! 2799: break;
! 2800: case '{':
! 2801: match = '}';
! 2802: break;
! 2803: case ')':
! 2804: match = '(';
! 2805: dir = -1;
! 2806: break;
! 2807: case ']':
! 2808: match = '[';
! 2809: dir = -1;
! 2810: break;
! 2811: case '}':
! 2812: match = '{';
! 2813: dir = -1;
! 2814: break;
! 2815: }
! 2816: for (q = p + dir; text <= q && q < end; q += dir) {
! 2817: // look for match, count levels of pairs (( ))
! 2818: if (*q == c)
! 2819: level++; // increase pair levels
! 2820: if (*q == match)
! 2821: level--; // reduce pair level
! 2822: if (level == 0)
! 2823: break; // found matching pair
! 2824: }
! 2825: if (level != 0)
! 2826: q = NULL; // indicate no match
! 2827: return (q);
! 2828: }
! 2829:
! 2830: #ifdef BB_FEATURE_VI_SETOPTS
! 2831: // show the matching char of a pair, () [] {}
! 2832: static void showmatching(Byte * p)
! 2833: {
! 2834: Byte *q, *save_dot;
! 2835:
! 2836: // we found half of a pair
! 2837: q = find_pair (p, *p); // get loc of matching char
! 2838: if (q == NULL) {
! 2839: indicate_error ('3'); // no matching char
! 2840: } else {
! 2841: // "q" now points to matching pair
! 2842: save_dot = dot; // remember where we are
! 2843: dot = q; // go to new loc
! 2844: refresh (FALSE); // let the user see it
! 2845: (void) mysleep (40); // give user some time
! 2846: dot = save_dot; // go back to old loc
! 2847: refresh (FALSE);
! 2848: }
! 2849: }
! 2850: #endif /* BB_FEATURE_VI_SETOPTS */
! 2851:
! 2852: // open a hole in text[]
! 2853: static Byte *text_hole_make(Byte * p, int size) // at "p", make a 'size' byte hole
! 2854: {
! 2855: Byte *src, *dest;
! 2856: int cnt;
! 2857:
! 2858: if (size <= 0)
! 2859: goto thm0;
! 2860: src = p;
! 2861: dest = p + size;
! 2862: cnt = end - src; // the rest of buffer
! 2863: if (memmove(dest, src, cnt) != dest) {
! 2864: psbs ("can't create room for new characters");
! 2865: }
! 2866: memset (p, ' ', size); // clear new hole
! 2867: end = end + size; // adjust the new END
! 2868: file_modified = TRUE; // has the file been modified
! 2869: thm0:
! 2870: return (p);
! 2871: }
! 2872:
! 2873: // close a hole in text[]
! 2874: static Byte *text_hole_delete(Byte * p, Byte * q) // delete "p" thru "q", inclusive
! 2875: {
! 2876: Byte *src, *dest;
! 2877: int cnt, hole_size;
! 2878:
! 2879: // move forwards, from beginning
! 2880: // assume p <= q
! 2881: src = q + 1;
! 2882: dest = p;
! 2883: if (q < p) { // they are backward- swap them
! 2884: src = p + 1;
! 2885: dest = q;
! 2886: }
! 2887: hole_size = q - p + 1;
! 2888: cnt = end - src;
! 2889: if (src < text || src > end)
! 2890: goto thd0;
! 2891: if (dest < text || dest >= end)
! 2892: goto thd0;
! 2893: if (src >= end)
! 2894: goto thd_atend; // just delete the end of the buffer
! 2895: if (memmove(dest, src, cnt) != dest) {
! 2896: psbs ("can't delete the character");
! 2897: }
! 2898: thd_atend:
! 2899: end = end - hole_size; // adjust the new END
! 2900: if (dest >= end)
! 2901: dest = end - 1; // make sure dest in below end-1
! 2902: if (end <= text)
! 2903: dest = end = text; // keep pointers valid
! 2904: file_modified = TRUE; // has the file been modified
! 2905: thd0:
! 2906: return (dest);
! 2907: }
! 2908:
! 2909: // copy text into register, then delete text.
! 2910: // if dist <= 0, do not include, or go past, a NewLine
! 2911: //
! 2912: static Byte *yank_delete(Byte * start, Byte * stop, int dist, int yf)
! 2913: {
! 2914: Byte *p;
! 2915:
! 2916: // make sure start <= stop
! 2917: if (start > stop) {
! 2918: // they are backwards, reverse them
! 2919: p = start;
! 2920: start = stop;
! 2921: stop = p;
! 2922: }
! 2923: if (dist <= 0) {
! 2924: // we can not cross NL boundaries
! 2925: p = start;
! 2926: if (*p == '\n')
! 2927: return (p);
! 2928: // dont go past a NewLine
! 2929: for (; p + 1 <= stop; p++) {
! 2930: if (p[1] == '\n') {
! 2931: stop = p; // "stop" just before NewLine
! 2932: break;
! 2933: }
! 2934: }
! 2935: }
! 2936: p = start;
! 2937: #ifdef BB_FEATURE_VI_YANKMARK
! 2938: text_yank (start, stop, YDreg);
! 2939: #endif /* BB_FEATURE_VI_YANKMARK */
! 2940: if (yf == YANKDEL) {
! 2941: p = text_hole_delete (start, stop);
! 2942: } // delete lines
! 2943: return (p);
! 2944: }
! 2945:
! 2946: static void show_help(void)
! 2947: {
! 2948: fprintf (stderr, "version: %s\n", vi_Version);
! 2949: puts ("These features are available:"
! 2950: #ifdef BB_FEATURE_VI_SEARCH
! 2951: "\n\tPattern searches with / and ?"
! 2952: #endif /* BB_FEATURE_VI_SEARCH */
! 2953: #ifdef BB_FEATURE_VI_DOT_CMD
! 2954: "\n\tLast command repeat with \'.\'"
! 2955: #endif /* BB_FEATURE_VI_DOT_CMD */
! 2956: #ifdef BB_FEATURE_VI_YANKMARK
! 2957: "\n\tLine marking with 'x"
! 2958: "\n\tNamed buffers with \"x"
! 2959: #endif /* BB_FEATURE_VI_YANKMARK */
! 2960: #ifdef BB_FEATURE_VI_READONLY
! 2961: "\n\tReadonly if vi is called as \"view\""
! 2962: "\n\tReadonly with -R command line arg"
! 2963: #endif /* BB_FEATURE_VI_READONLY */
! 2964: #ifdef BB_FEATURE_VI_SET
! 2965: "\n\tSome colon mode commands with \':\'"
! 2966: #endif /* BB_FEATURE_VI_SET */
! 2967: #ifdef BB_FEATURE_VI_SETOPTS
! 2968: "\n\tSettable options with \":set\""
! 2969: #endif /* BB_FEATURE_VI_SETOPTS */
! 2970: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 2971: "\n\tSignal catching- ^C"
! 2972: "\n\tJob suspend and resume with ^Z"
! 2973: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 2974: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 2975: "\n\tAdapt to window re-sizes"
! 2976: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 2977: );
! 2978: }
! 2979:
! 2980: static void print_literal(Byte * buf, Byte * s) // copy s to buf, convert unprintable
! 2981: {
! 2982: Byte c, b[2];
! 2983:
! 2984: b[1] = '\0';
! 2985: strcpy ((char *) buf, ""); // init buf
! 2986: if (strlen ((char *) s) <= 0)
! 2987: s = (Byte *) "(NULL)";
! 2988: for (; *s > '\0'; s++) {
! 2989: c = *s;
! 2990: if (*s > '~') {
! 2991: strlcat((char *) buf, SOs, BUFSIZ); /* FIXED strlcat BUFSIZ */
! 2992: c = *s - 128;
! 2993: }
! 2994: if (*s < ' ') {
! 2995: strcat ((char *) buf, "^");
! 2996: c += '@';
! 2997: }
! 2998: b[0] = c;
! 2999: strlcat((char *) buf, (char *) b, BUFSIZ); /* FIXED added BUFSIZ and converted to strlcat() */
! 3000: if (*s > '~')
! 3001: strlcat((char *) buf, SOn, BUFSIZ); /* FIXED strlcat BUFSIZ */
! 3002: if (*s == '\n') {
! 3003: strcat ((char *) buf, "$");
! 3004: }
! 3005: }
! 3006: }
! 3007:
! 3008: #ifdef BB_FEATURE_VI_DOT_CMD
! 3009: static void start_new_cmd_q(Byte c)
! 3010: {
! 3011: // release old cmd
! 3012: if (last_modifying_cmd != 0)
! 3013: free (last_modifying_cmd);
! 3014: // get buffer for new cmd
! 3015: last_modifying_cmd = (Byte *) malloc (BUFSIZ);
! 3016: memset (last_modifying_cmd, '\0', BUFSIZ); // clear new cmd queue
! 3017: // if there is a current cmd count put it in the buffer first
! 3018: if (cmdcnt > 0)
! 3019: sprintf ((char *) last_modifying_cmd, "%d", cmdcnt);
! 3020: // save char c onto queue
! 3021: last_modifying_cmd[strlen ((char *) last_modifying_cmd)] = c;
! 3022: adding2q = 1;
! 3023: return;
! 3024: }
! 3025:
! 3026: static void end_cmd_q()
! 3027: {
! 3028: #ifdef BB_FEATURE_VI_YANKMARK
! 3029: YDreg = 26; // go back to default Yank/Delete reg
! 3030: #endif /* BB_FEATURE_VI_YANKMARK */
! 3031: adding2q = 0;
! 3032: return;
! 3033: }
! 3034: #endif /* BB_FEATURE_VI_DOT_CMD */
! 3035:
! 3036: #if defined(BB_FEATURE_VI_YANKMARK) || defined(BB_FEATURE_VI_COLON) || defined(BB_FEATURE_VI_CRASHME)
! 3037: static Byte * string_insert(Byte * p, Byte * s) // insert the string at 'p'
! 3038: {
! 3039: int cnt, i;
! 3040:
! 3041: i = strlen ((char *) s);
! 3042: p = text_hole_make (p, i);
! 3043: strncpy ((char *) p, (char *) s, i);
! 3044: for (cnt = 0; *s != '\0'; s++) {
! 3045: if (*s == '\n')
! 3046: cnt++;
! 3047: }
! 3048: #ifdef BB_FEATURE_VI_YANKMARK
! 3049: psb ("Put %d lines (%d chars) from [%c]", cnt, i, what_reg ());
! 3050: #endif /* BB_FEATURE_VI_YANKMARK */
! 3051: return (p);
! 3052: }
! 3053: #endif /* BB_FEATURE_VI_YANKMARK || BB_FEATURE_VI_COLON || BB_FEATURE_VI_CRASHME */
! 3054:
! 3055: #ifdef BB_FEATURE_VI_YANKMARK
! 3056: static Byte *text_yank(Byte * p, Byte * q, int dest) // copy text into a register
! 3057: {
! 3058: Byte *t;
! 3059: int cnt;
! 3060:
! 3061: if (q < p) { // they are backwards- reverse them
! 3062: t = q;
! 3063: q = p;
! 3064: p = t;
! 3065: }
! 3066: cnt = q - p + 1;
! 3067: t = reg[dest];
! 3068: if (t != 0) { // if already a yank register
! 3069: free (t); // free it
! 3070: }
! 3071: t = (Byte *) malloc (cnt + 1); // get a new register
! 3072: memset (t, '\0', cnt + 1); // clear new text[]
! 3073: strncpy ((char *) t, (char *) p, cnt); // copy text[] into bufer
! 3074: reg[dest] = t;
! 3075: return (p);
! 3076: }
! 3077:
! 3078: static Byte what_reg(void)
! 3079: {
! 3080: Byte c;
! 3081: int i;
! 3082:
! 3083: i = 0;
! 3084: c = 'D'; // default to D-reg
! 3085: if (0 <= YDreg && YDreg <= 25)
! 3086: c = 'a' + (Byte) YDreg;
! 3087: if (YDreg == 26)
! 3088: c = 'D';
! 3089: if (YDreg == 27)
! 3090: c = 'U';
! 3091: return (c);
! 3092: }
! 3093:
! 3094: static void check_context(Byte cmd)
! 3095: {
! 3096: // A context is defined to be "modifying text"
! 3097: // Any modifying command establishes a new context.
! 3098:
! 3099: if (dot < context_start || dot > context_end) {
! 3100: if (strchr((char *) modifying_cmds, cmd) != NULL) {
! 3101: // we are trying to modify text[]- make this the current context
! 3102: mark[27] = mark[26]; // move cur to prev
! 3103: mark[26] = dot; // move local to cur
! 3104: context_start = prev_line (prev_line (dot));
! 3105: context_end = next_line (next_line (dot));
! 3106: //loiter= start_loiter= now;
! 3107: }
! 3108: }
! 3109: return;
! 3110: }
! 3111:
! 3112: static Byte *swap_context(Byte * p) // goto new context for '' command make this the current context
! 3113: {
! 3114: Byte *tmp;
! 3115:
! 3116: // the current context is in mark[26]
! 3117: // the previous context is in mark[27]
! 3118: // only swap context if other context is valid
! 3119: if (text <= mark[27] && mark[27] <= end - 1) {
! 3120: tmp = mark[27];
! 3121: mark[27] = mark[26];
! 3122: mark[26] = tmp;
! 3123: p = mark[26]; // where we are going- previous context
! 3124: context_start = prev_line (prev_line (prev_line (p)));
! 3125: context_end = next_line (next_line (next_line (p)));
! 3126: }
! 3127: return (p);
! 3128: }
! 3129: #endif /* BB_FEATURE_VI_YANKMARK */
! 3130:
! 3131: static int isblnk(Byte c) // is the char a blank or tab
! 3132: {
! 3133: return (c == ' ' || c == '\t');
! 3134: }
! 3135:
! 3136: //----- Set terminal attributes --------------------------------
! 3137: static void rawmode(void)
! 3138: {
! 3139: tcgetattr (0, &term_orig);
! 3140: term_vi = term_orig;
! 3141: term_vi.c_lflag &= (~ICANON & ~ECHO); // leave ISIG ON- allow intr's
! 3142: term_vi.c_iflag &= (~IXON & ~ICRNL);
! 3143: term_vi.c_oflag &= (~ONLCR);
! 3144: #ifndef linux
! 3145: term_vi.c_cc[VMIN] = 1;
! 3146: term_vi.c_cc[VTIME] = 0;
! 3147: #endif
! 3148: erase_char = term_vi.c_cc[VERASE];
! 3149: tcsetattr (0, TCSANOW, &term_vi);
! 3150: }
! 3151:
! 3152: static void cookmode(void)
! 3153: {
! 3154: tcsetattr (0, TCSANOW, &term_orig);
! 3155: }
! 3156:
! 3157: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 3158: //----- See what the window size currently is --------------------
! 3159: static void window_size_get(int sig)
! 3160: {
! 3161: int i;
! 3162:
! 3163: i = ioctl (0, TIOCGWINSZ, &winsize);
! 3164: if (i != 0) {
! 3165: // force 24x80
! 3166: winsize.ws_row = 24;
! 3167: winsize.ws_col = 80;
! 3168: }
! 3169: if (winsize.ws_row <= 1) {
! 3170: winsize.ws_row = 24;
! 3171: }
! 3172: if (winsize.ws_col <= 1) {
! 3173: winsize.ws_col = 80;
! 3174: }
! 3175: rows = (int) winsize.ws_row;
! 3176: columns = (int) winsize.ws_col;
! 3177: }
! 3178: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 3179:
! 3180: //----- Come here when we get a window resize signal ---------
! 3181: #ifdef BB_FEATURE_VI_USE_SIGNALS
! 3182: static void winch_sig(int sig)
! 3183: {
! 3184: signal (SIGWINCH, winch_sig);
! 3185: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 3186: window_size_get (0);
! 3187: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 3188: new_screen (rows, columns); // get memory for virtual screen
! 3189: redraw (TRUE); // re-draw the screen
! 3190: }
! 3191:
! 3192: //----- Come here when we get a continue signal -------------------
! 3193: static void cont_sig(int sig)
! 3194: {
! 3195: rawmode (); // terminal to "raw"
! 3196: *status_buffer = '\0'; // clear the status buffer
! 3197: redraw (TRUE); // re-draw the screen
! 3198:
! 3199: signal (SIGTSTP, suspend_sig);
! 3200: signal (SIGCONT, SIG_DFL);
! 3201: kill (getpid (), SIGCONT);
! 3202: }
! 3203:
! 3204: //----- Come here when we get a Suspend signal -------------------
! 3205: static void suspend_sig(int sig)
! 3206: {
! 3207: place_cursor (rows - 1, 0, FALSE); // go to bottom of screen
! 3208: clear_to_eol (); // Erase to end of line
! 3209: cookmode (); // terminal to "cooked"
! 3210:
! 3211: signal (SIGCONT, cont_sig);
! 3212: signal (SIGTSTP, SIG_DFL);
! 3213: kill (getpid (), SIGTSTP);
! 3214: }
! 3215:
! 3216: //----- Come here when we get a signal ---------------------------
! 3217: static void catch_sig(int sig)
! 3218: {
! 3219: signal (SIGHUP, catch_sig);
! 3220: signal (SIGINT, catch_sig);
! 3221: signal (SIGTERM, catch_sig);
! 3222: longjmp (restart, sig);
! 3223: }
! 3224:
! 3225: static void alarm_sig(int sig)
! 3226: {
! 3227: signal (SIGALRM, catch_sig);
! 3228: longjmp (restart, sig);
! 3229: }
! 3230:
! 3231: //----- Come here when we get a core dump signal -----------------
! 3232: static void core_sig(int sig)
! 3233: {
! 3234: signal (SIGQUIT, core_sig);
! 3235: signal (SIGILL, core_sig);
! 3236: signal (SIGTRAP, core_sig);
! 3237: signal (SIGIOT, core_sig);
! 3238: signal (SIGABRT, core_sig);
! 3239: signal (SIGFPE, core_sig);
! 3240: signal (SIGBUS, core_sig);
! 3241: signal (SIGSEGV, core_sig);
! 3242: #ifdef SIGSYS
! 3243: signal (SIGSYS, core_sig);
! 3244: #endif
! 3245:
! 3246: dot = bound_dot (dot); // make sure "dot" is valid
! 3247:
! 3248: longjmp (restart, sig);
! 3249: }
! 3250: #endif /* BB_FEATURE_VI_USE_SIGNALS */
! 3251:
! 3252: static int mysleep(int hund) // sleep for 'h' 1/100 seconds
! 3253: {
! 3254: // Don't hang- Wait 5/100 seconds- 1 Sec= 1000000
! 3255: FD_ZERO (&rfds);
! 3256: FD_SET (0, &rfds);
! 3257: tv.tv_sec = 0;
! 3258: tv.tv_usec = hund * 10000;
! 3259: select (1, &rfds, NULL, NULL, &tv);
! 3260: return (FD_ISSET (0, &rfds));
! 3261: }
! 3262:
! 3263: //----- IO Routines --------------------------------------------
! 3264: static Byte readit(void) // read (maybe cursor) key from stdin
! 3265: {
! 3266: Byte c;
! 3267: int i, bufsiz, cnt, cmdindex;
! 3268: struct esc_cmds {
! 3269: Byte *seq;
! 3270: Byte val;
! 3271: };
! 3272:
! 3273: static struct esc_cmds esccmds[] = {
! 3274: {(Byte *) "OA", (Byte) VI_K_UP}, // cursor key Up
! 3275: {(Byte *) "OB", (Byte) VI_K_DOWN}, // cursor key Down
! 3276: {(Byte *) "OC", (Byte) VI_K_RIGHT}, // Cursor Key Right
! 3277: {(Byte *) "OD", (Byte) VI_K_LEFT}, // cursor key Left
! 3278: {(Byte *) "OH", (Byte) VI_K_HOME}, // Cursor Key Home
! 3279: {(Byte *) "OF", (Byte) VI_K_END}, // Cursor Key End
! 3280: {(Byte *) "[A", (Byte) VI_K_UP}, // cursor key Up
! 3281: {(Byte *) "[B", (Byte) VI_K_DOWN}, // cursor key Down
! 3282: {(Byte *) "[C", (Byte) VI_K_RIGHT}, // Cursor Key Right
! 3283: {(Byte *) "[D", (Byte) VI_K_LEFT}, // cursor key Left
! 3284: {(Byte *) "[H", (Byte) VI_K_HOME}, // Cursor Key Home
! 3285: {(Byte *) "[F", (Byte) VI_K_END}, // Cursor Key End
! 3286: {(Byte *) "[2~", (Byte) VI_K_INSERT}, // Cursor Key Insert
! 3287: {(Byte *) "[5~", (Byte) VI_K_PAGEUP}, // Cursor Key Page Up
! 3288: {(Byte *) "[6~", (Byte) VI_K_PAGEDOWN}, // Cursor Key Page Down
! 3289: {(Byte *) "OP", (Byte) VI_K_FUN1}, // Function Key F1
! 3290: {(Byte *) "OQ", (Byte) VI_K_FUN2}, // Function Key F2
! 3291: {(Byte *) "OR", (Byte) VI_K_FUN3}, // Function Key F3
! 3292: {(Byte *) "OS", (Byte) VI_K_FUN4}, // Function Key F4
! 3293: {(Byte *) "[15~", (Byte) VI_K_FUN5}, // Function Key F5
! 3294: {(Byte *) "[17~", (Byte) VI_K_FUN6}, // Function Key F6
! 3295: {(Byte *) "[18~", (Byte) VI_K_FUN7}, // Function Key F7
! 3296: {(Byte *) "[19~", (Byte) VI_K_FUN8}, // Function Key F8
! 3297: {(Byte *) "[20~", (Byte) VI_K_FUN9}, // Function Key F9
! 3298: {(Byte *) "[21~", (Byte) VI_K_FUN10}, // Function Key F10
! 3299: {(Byte *) "[23~", (Byte) VI_K_FUN11}, // Function Key F11
! 3300: {(Byte *) "[24~", (Byte) VI_K_FUN12}, // Function Key F12
! 3301: {(Byte *) "[11~", (Byte) VI_K_FUN1}, // Function Key F1
! 3302: {(Byte *) "[12~", (Byte) VI_K_FUN2}, // Function Key F2
! 3303: {(Byte *) "[13~", (Byte) VI_K_FUN3}, // Function Key F3
! 3304: {(Byte *) "[14~", (Byte) VI_K_FUN4}, // Function Key F4
! 3305: };
! 3306:
! 3307: #define ESCCMDS_COUNT (sizeof(esccmds)/sizeof(struct esc_cmds))
! 3308:
! 3309: // (void) alarm(0); // turn alarm OFF while we wait for input
! 3310: // get input from User- are there already input chars in Q?
! 3311: bufsiz = strlen ((char *) readbuffer);
! 3312: if (bufsiz <= 0) {
! 3313: ri0:
! 3314: // the Q is empty, wait for a typed char
! 3315: bufsiz = read (0, readbuffer, BUFSIZ - 1);
! 3316: if (bufsiz < 0) {
! 3317: if (errno == EINTR)
! 3318: goto ri0; // interrupted sys call
! 3319: if (errno == EBADF)
! 3320: editing = 0;
! 3321: if (errno == EFAULT)
! 3322: editing = 0;
! 3323: if (errno == EINVAL)
! 3324: editing = 0;
! 3325: if (errno == EIO)
! 3326: editing = 0;
! 3327: errno = 0;
! 3328: bufsiz = 0;
! 3329: }
! 3330: readbuffer[bufsiz] = '\0';
! 3331: }
! 3332: // return char if it is not part of ESC sequence
! 3333: if (readbuffer[0] != 27)
! 3334: goto ri1;
! 3335:
! 3336: // This is an ESC char. Is this Esc sequence?
! 3337: // Could be bare Esc key. See if there are any
! 3338: // more chars to read after the ESC. This would
! 3339: // be a Function or Cursor Key sequence.
! 3340: FD_ZERO (&rfds);
! 3341: FD_SET (0, &rfds);
! 3342: tv.tv_sec = 0;
! 3343: tv.tv_usec = 50000; // Wait 5/100 seconds- 1 Sec=1000000
! 3344:
! 3345: // keep reading while there are input chars and room in buffer
! 3346: while (select(1, &rfds, NULL, NULL, &tv) > 0 && bufsiz <= (BUFSIZ - 5)) {
! 3347: // read the rest of the ESC string
! 3348: i = read (0, (void *) (readbuffer + bufsiz), BUFSIZ - bufsiz);
! 3349: if (i > 0) {
! 3350: bufsiz += i;
! 3351: readbuffer[bufsiz] = '\0'; // Terminate the string
! 3352: }
! 3353: }
! 3354: // Maybe cursor or function key?
! 3355: for (cmdindex = 0; cmdindex < ESCCMDS_COUNT; cmdindex++) {
! 3356: cnt = strlen ((char *) esccmds[cmdindex].seq);
! 3357: i = strncmp ((char *) esccmds[cmdindex].seq, (char *) readbuffer, cnt);
! 3358: if (i == 0) {
! 3359: // is a Cursor key- put derived value back into Q
! 3360: readbuffer[0] = esccmds[cmdindex].val;
! 3361: // squeeze out the ESC sequence
! 3362: for (i = 1; i < cnt; i++) {
! 3363: memmove (readbuffer + 1, readbuffer + 2, BUFSIZ - 2);
! 3364: readbuffer[BUFSIZ - 1] = '\0';
! 3365: }
! 3366: break;
! 3367: }
! 3368: }
! 3369: ri1:
! 3370: c = readbuffer[0];
! 3371: // remove one char from Q
! 3372: memmove (readbuffer, readbuffer + 1, BUFSIZ - 1);
! 3373: readbuffer[BUFSIZ - 1] = '\0';
! 3374: // (void) alarm(3); // we are done waiting for input, turn alarm ON
! 3375: return (c);
! 3376: }
! 3377:
! 3378: //----- IO Routines --------------------------------------------
! 3379: static Byte get_one_char()
! 3380: {
! 3381: static Byte c;
! 3382:
! 3383: #ifdef BB_FEATURE_VI_DOT_CMD
! 3384: // ! adding2q && ioq == 0 read()
! 3385: // ! adding2q && ioq != 0 *ioq
! 3386: // adding2q *last_modifying_cmd= read()
! 3387: if (!adding2q) {
! 3388: // we are not adding to the q.
! 3389: // but, we may be reading from a q
! 3390: if (ioq == 0) {
! 3391: // there is no current q, read from STDIN
! 3392: c = readit (); // get the users input
! 3393: } else {
! 3394: // there is a queue to get chars from first
! 3395: c = *ioq++;
! 3396: if (c == '\0') {
! 3397: // the end of the q, read from STDIN
! 3398: free (ioq_start);
! 3399: ioq_start = ioq = 0;
! 3400: c = readit (); // get the users input
! 3401: }
! 3402: }
! 3403: } else {
! 3404: // adding STDIN chars to q
! 3405: c = readit (); // get the users input
! 3406: if (last_modifying_cmd != 0) {
! 3407: int len = strlen((char *) last_modifying_cmd);
! 3408: if (len + 1 >= BUFSIZ) {
! 3409: /* FIXME last_modifying_cmd needs a shaving */
! 3410: fprintf(stderr,"last_modifying_cmd overrun");
! 3411: exit(EXIT_FAILURE);
! 3412: } else {
! 3413: // add new char to q
! 3414: last_modifying_cmd[len] = c;
! 3415: }
! 3416:
! 3417: }
! 3418: }
! 3419: #else /* BB_FEATURE_VI_DOT_CMD */
! 3420: c = readit (); // get the users input
! 3421: #endif /* BB_FEATURE_VI_DOT_CMD */
! 3422: return (c); // return the char, where ever it came from
! 3423: }
! 3424:
! 3425: static Byte *get_input_line(Byte * prompt) // get input line- use "status line"
! 3426: {
! 3427: Byte buf[BUFSIZ];
! 3428: Byte c;
! 3429: int i;
! 3430: static Byte *obufp = NULL;
! 3431:
! 3432: /* FIXED strcpy((char *) buf, (char *) prompt); */
! 3433: if (strlcpy((char *) buf, (char *) prompt, sizeof((char *)buf)) > sizeof ((char *) buf)) err(1, "strlcpy overflow in function get_input_line");
! 3434: *status_buffer = '\0'; // clear the status buffer
! 3435: place_cursor (rows - 1, 0, FALSE); // go to Status line, bottom of screen
! 3436: clear_to_eol (); // clear the line
! 3437: write (1, prompt, strlen ((char *) prompt)); // write out the :, /, or ? prompt
! 3438:
! 3439: for (i = strlen ((char *) buf); i < BUFSIZ;) {
! 3440: c = get_one_char (); // read user input
! 3441: if (c == '\n' || c == '\r' || c == 27)
! 3442: break; // is this end of input
! 3443: if (c == erase_char) { // user wants to erase prev char
! 3444: i--; // backup to prev char
! 3445: buf[i] = '\0'; // erase the char
! 3446: buf[i + 1] = '\0'; // null terminate buffer
! 3447: write (1, " ", 3); // erase char on screen
! 3448: if (i <= 0) { // user backs up before b-o-l, exit
! 3449: break;
! 3450: }
! 3451: } else {
! 3452: buf[i] = c; // save char in buffer
! 3453: buf[i + 1] = '\0'; // make sure buffer is null terminated
! 3454: write (1, buf + i, 1); // echo the char back to user
! 3455: i++;
! 3456: }
! 3457: }
! 3458: refresh (FALSE);
! 3459: if (obufp != NULL)
! 3460: free (obufp);
! 3461: obufp = (Byte *) strdup ((char *) buf);
! 3462: return (obufp);
! 3463: }
! 3464:
! 3465: static int file_size(Byte * fn) // what is the byte size of "fn"
! 3466: {
! 3467: struct stat st_buf;
! 3468: int cnt, sr;
! 3469:
! 3470: if (fn == 0 || strlen (fn) <= 0)
! 3471: return (-1);
! 3472: cnt = -1;
! 3473: sr = stat ((char *) fn, &st_buf); // see if file exists
! 3474: if (sr >= 0) {
! 3475: cnt = (int) st_buf.st_size;
! 3476: }
! 3477: return (cnt);
! 3478: }
! 3479:
! 3480: static int file_insert(Byte * fn, Byte * p, int size)
! 3481: {
! 3482: int fd, cnt;
! 3483:
! 3484: cnt = -1;
! 3485: #ifdef BB_FEATURE_VI_READONLY
! 3486: readonly = FALSE;
! 3487: #endif /* BB_FEATURE_VI_READONLY */
! 3488: if (fn == 0 || strlen ((char *) fn) <= 0) {
! 3489: psbs ("No filename given");
! 3490: goto fi0;
! 3491: }
! 3492: if (size == 0) {
! 3493: // OK- this is just a no-op
! 3494: cnt = 0;
! 3495: goto fi0;
! 3496: }
! 3497: if (size < 0) {
! 3498: psbs ("Trying to insert a negative number (%d) of characters", size);
! 3499: goto fi0;
! 3500: }
! 3501: if (p < text || p > end) {
! 3502: psbs ("Trying to insert file outside of memory");
! 3503: goto fi0;
! 3504: }
! 3505:
! 3506: // see if we can open the file
! 3507: #ifdef BB_FEATURE_VI_READONLY
! 3508: if (vi_readonly == TRUE) goto fi1; // do not try write-mode
! 3509: #endif
! 3510: fd = open ((char *) fn, O_RDWR); // assume read & write
! 3511: if (fd < 0) {
! 3512: // could not open for writing- maybe file is read only
! 3513: #ifdef BB_FEATURE_VI_READONLY
! 3514: fi1:
! 3515: #endif
! 3516: fd = open ((char *) fn, O_RDONLY); // try read-only
! 3517: if (fd < 0) {
! 3518: psbs ("\"%s\" %s", fn, "could not open file");
! 3519: goto fi0;
! 3520: }
! 3521: #ifdef BB_FEATURE_VI_READONLY
! 3522: // got the file- read-only
! 3523: readonly = TRUE;
! 3524: #endif /* BB_FEATURE_VI_READONLY */
! 3525: }
! 3526: p = text_hole_make (p, size);
! 3527: cnt = read (fd, p, size);
! 3528: close (fd);
! 3529: if (cnt < 0) {
! 3530: cnt = -1;
! 3531: p = text_hole_delete (p, p + size - 1); // un-do buffer insert
! 3532: psbs ("could not read file \"%s\"", fn);
! 3533: } else if (cnt < size) {
! 3534: // There was a partial read, shrink unused space text[]
! 3535: p = text_hole_delete (p + cnt, p + (size - cnt) - 1); // un-do buffer insert
! 3536: psbs ("could not read all of file \"%s\"", fn);
! 3537: }
! 3538: if (cnt >= size)
! 3539: file_modified = TRUE;
! 3540: fi0:
! 3541: return (cnt);
! 3542: }
! 3543:
! 3544: static int file_write(Byte * fn, Byte * first, Byte * last)
! 3545: {
! 3546: int fd, cnt, charcnt;
! 3547:
! 3548: if (fn == 0) {
! 3549: psbs ("No current filename");
! 3550: return (-1);
! 3551: }
! 3552: charcnt = 0;
! 3553: // FIXIT- use the correct umask()
! 3554: fd = open ((char *) fn, (O_WRONLY | O_CREAT | O_TRUNC), 0664);
! 3555: if (fd < 0)
! 3556: return (-1);
! 3557: cnt = last - first + 1;
! 3558: charcnt = write (fd, first, cnt);
! 3559: if (charcnt == cnt) {
! 3560: // good write
! 3561: //file_modified= FALSE; // the file has not been modified
! 3562: } else {
! 3563: charcnt = 0;
! 3564: }
! 3565: close (fd);
! 3566: return (charcnt);
! 3567: }
! 3568:
! 3569: //----- Terminal Drawing ---------------------------------------
! 3570: // The terminal is made up of 'rows' line of 'columns' columns.
! 3571: // classicly this would be 24 x 80.
! 3572: // screen coordinates
! 3573: // 0,0 ... 0,79
! 3574: // 1,0 ... 1,79
! 3575: // . ... .
! 3576: // . ... .
! 3577: // 22,0 ... 22,79
! 3578: // 23,0 ... 23,79 status line
! 3579: //
! 3580:
! 3581: //----- Move the cursor to row x col (count from 0, not 1) -------
! 3582: static void place_cursor(int row, int col, int opti)
! 3583: {
! 3584: char cm1[BUFSIZ];
! 3585: char *cm;
! 3586: int l;
! 3587: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3588: char cm2[BUFSIZ];
! 3589: Byte *screenp;
! 3590: // char cm3[BUFSIZ];
! 3591: int Rrow = last_row;
! 3592: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3593:
! 3594: memset (cm1, '\0', BUFSIZ - 1); // clear the buffer
! 3595:
! 3596: if (row < 0) row = 0;
! 3597: if (row >= rows) row = rows - 1;
! 3598: if (col < 0) col = 0;
! 3599: if (col >= columns) col = columns - 1;
! 3600:
! 3601: //----- 1. Try the standard terminal ESC sequence
! 3602: sprintf ((char *) cm1, CMrc, row + 1, col + 1);
! 3603: cm = cm1;
! 3604: if (opti == FALSE) goto pc0;
! 3605:
! 3606: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3607: //----- find the minimum # of chars to move cursor -------------
! 3608: //----- 2. Try moving with discreet chars (Newline, [back]space, ...)
! 3609: memset (cm2, '\0', BUFSIZ - 1); // clear the buffer
! 3610: /* FIXME - possible replace with strlc* ? */
! 3611:
! 3612: // move to the correct row
! 3613: while (row < Rrow) {
! 3614: // the cursor has to move up
! 3615: strlcat(cm2, CMup, BUFSIZ); /* FIXED strlcat BUFSIZ */
! 3616: Rrow--;
! 3617: }
! 3618: while (row > Rrow) {
! 3619: // the cursor has to move down
! 3620: strlcat(cm2, CMdown, BUFSIZ); /* FIXED strlcat BUFSIZE */
! 3621: Rrow++;
! 3622: }
! 3623:
! 3624: // now move to the correct column
! 3625: strcat (cm2, "\r"); // start at col 0
! 3626: // just send out orignal source char to get to correct place
! 3627: screenp = &screen[row * columns]; // start of screen line
! 3628: strncat (cm2, screenp, col);
! 3629:
! 3630: //----- 3. Try some other way of moving cursor
! 3631: //---------------------------------------------
! 3632:
! 3633: // pick the shortest cursor motion to send out
! 3634: cm = cm1;
! 3635: if (strlen (cm2) < strlen (cm)) {
! 3636: cm = cm2;
! 3637: } /* else if (strlen(cm3) < strlen(cm)) {
! 3638: cm= cm3;
! 3639: } */
! 3640: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3641: pc0:
! 3642: l = strlen (cm);
! 3643: if (l) write (1, cm, l); // move the cursor
! 3644: }
! 3645:
! 3646: //----- Erase from cursor to end of line -----------------------
! 3647: static void clear_to_eol()
! 3648: {
! 3649: write (1, Ceol, strlen (Ceol)); // Erase from cursor to end of line
! 3650: }
! 3651:
! 3652: //----- Erase from cursor to end of screen -----------------------
! 3653: static void clear_to_eos()
! 3654: {
! 3655: write (1, Ceos, strlen (Ceos)); // Erase from cursor to end of screen
! 3656: }
! 3657:
! 3658: //----- Start standout mode ------------------------------------
! 3659: static void standout_start() // send "start reverse video" sequence
! 3660: {
! 3661: write (1, SOs, strlen (SOs)); // Start reverse video mode
! 3662: }
! 3663:
! 3664: //----- End standout mode --------------------------------------
! 3665: static void standout_end() // send "end reverse video" sequence
! 3666: {
! 3667: write (1, SOn, strlen (SOn)); // End reverse video mode
! 3668: }
! 3669:
! 3670: //----- Flash the screen --------------------------------------
! 3671: static void flash(int h)
! 3672: {
! 3673: standout_start (); // send "start reverse video" sequence
! 3674: redraw (TRUE);
! 3675: (void) mysleep (h);
! 3676: standout_end (); // send "end reverse video" sequence
! 3677: redraw (TRUE);
! 3678: }
! 3679:
! 3680: static void beep()
! 3681: {
! 3682: write (1, bell, strlen (bell)); // send out a bell character
! 3683: }
! 3684:
! 3685: static void indicate_error(char c)
! 3686: {
! 3687: #ifdef BB_FEATURE_VI_CRASHME
! 3688: if (crashme > 0)
! 3689: return; // generate a random command
! 3690: #endif /* BB_FEATURE_VI_CRASHME */
! 3691: if (err_method == 0) {
! 3692: beep ();
! 3693: } else {
! 3694: flash (10);
! 3695: }
! 3696: }
! 3697:
! 3698: //----- Screen[] Routines --------------------------------------
! 3699: //----- Erase the Screen[] memory ------------------------------
! 3700: static void screen_erase()
! 3701: {
! 3702: memset (screen, ' ', screensize); // clear new screen
! 3703: }
! 3704:
! 3705: //----- Draw the status line at bottom of the screen -------------
! 3706: static void show_status_line(void)
! 3707: {
! 3708: static int last_cksum;
! 3709: int l, cnt, cksum;
! 3710:
! 3711: cnt = strlen ((char *) status_buffer);
! 3712: for (cksum = l = 0; l < cnt; l++) { cksum += (int) (status_buffer[l]); }
! 3713: // don't write the status line unless it changes
! 3714: if (cnt > 0 && last_cksum != cksum) {
! 3715: last_cksum = cksum; // remember if we have seen this line
! 3716: place_cursor (rows - 1, 0, FALSE); // put cursor on status line
! 3717: write (1, status_buffer, cnt);
! 3718: clear_to_eol ();
! 3719: place_cursor (crow, ccol, FALSE); // put cursor back in correct place
! 3720: }
! 3721: }
! 3722:
! 3723: //----- format the status buffer, the bottom line of screen ------
! 3724: // print status buffer, with STANDOUT mode
! 3725: static void psbs(char *format, ...)
! 3726: {
! 3727: va_list args;
! 3728:
! 3729: va_start (args, format);
! 3730: /* FIXED strcpy((char *) status_buffer, SOs); */
! 3731: strlcpy((char *) status_buffer, SOs, BUFSIZ_STATBUF); // Terminal standout mode on
! 3732: vsprintf ((char *) status_buffer + strlen ((char *) status_buffer), format,
! 3733: args);
! 3734: /* FIXED strcat((char *) status_buffer, SOn); */
! 3735: strlcat((char *) status_buffer, SOn, BUFSIZ_STATBUF); // Terminal standout mode off
! 3736: va_end (args);
! 3737:
! 3738: return;
! 3739: }
! 3740:
! 3741: // print status buffer
! 3742: static void psb(char *format, ...)
! 3743: {
! 3744: va_list args;
! 3745:
! 3746: va_start (args, format);
! 3747: vsprintf ((char *) status_buffer, format, args);
! 3748: va_end (args);
! 3749: return;
! 3750: }
! 3751:
! 3752: static void ni(Byte * s) // display messages
! 3753: {
! 3754: Byte buf[BUFSIZ];
! 3755:
! 3756: print_literal (buf, s);
! 3757: psbs ("\'%s\' is not implemented", buf);
! 3758: }
! 3759:
! 3760: static void edit_status(void) // show file status on status line
! 3761: {
! 3762: int cur, tot, percent;
! 3763:
! 3764: cur = count_lines (text, dot);
! 3765: tot = count_lines (text, end - 1);
! 3766: // current line percent
! 3767: // ------------- ~~ ----------
! 3768: // total lines 100
! 3769: if (tot > 0) {
! 3770: percent = (100 * cur) / tot;
! 3771: } else {
! 3772: cur = tot = 0;
! 3773: percent = 100;
! 3774: }
! 3775: psb ("\"%s\""
! 3776: #ifdef BB_FEATURE_VI_READONLY
! 3777: "%s"
! 3778: #endif /* BB_FEATURE_VI_READONLY */
! 3779: "%s line %d of %d --%d%%--",
! 3780: (cfn != 0 ? (char *) cfn : "No file"),
! 3781: #ifdef BB_FEATURE_VI_READONLY
! 3782: ((vi_readonly == TRUE || readonly == TRUE) ? " [Read only]" : ""),
! 3783: #endif /* BB_FEATURE_VI_READONLY */
! 3784: (file_modified == TRUE ? " [modified]" : ""),
! 3785: cur, tot, percent);
! 3786: }
! 3787:
! 3788: //----- Force refresh of all Lines -----------------------------
! 3789: static void redraw(int full_screen)
! 3790: {
! 3791: place_cursor (0, 0, FALSE); // put cursor in correct place
! 3792: clear_to_eos (); // tel terminal to erase display
! 3793: screen_erase (); // erase the internal screen buffer
! 3794: refresh (full_screen); // this will redraw the entire display
! 3795: }
! 3796:
! 3797: //----- Format a text[] line into a buffer ---------------------
! 3798: static void format_line(Byte * dest, Byte * src, int li)
! 3799: {
! 3800: int co;
! 3801: Byte c;
! 3802:
! 3803: for (co = 0; co < MAX_SCR_COLS; co++) {
! 3804: c = ' '; // assume blank
! 3805: if (li > 0 && co == 0) {
! 3806: c = '~'; // not first line, assume Tilde
! 3807: }
! 3808: // are there chars in text[] and have we gone past the end
! 3809: if (text < end && src < end) {
! 3810: c = *src++;
! 3811: }
! 3812: if (c == '\n')
! 3813: break;
! 3814: if (c < ' ' || c > '~') {
! 3815: if (c == '\t') {
! 3816: c = ' ';
! 3817: // co % 8 != 7
! 3818: for (; (co % tabstop) != (tabstop - 1); co++) {
! 3819: dest[co] = c;
! 3820: }
! 3821: } else {
! 3822: dest[co++] = '^';
! 3823: c |= '@'; // make it visible
! 3824: c &= 0x7f; // get rid of hi bit
! 3825: }
! 3826: }
! 3827: // the co++ is done here so that the column will
! 3828: // not be overwritten when we blank-out the rest of line
! 3829: dest[co] = c;
! 3830: if (src >= end)
! 3831: break;
! 3832: }
! 3833: }
! 3834:
! 3835: //----- Refresh the changed screen lines -----------------------
! 3836: // Copy the source line from text[] into the buffer and note
! 3837: // if the current screenline is different from the new buffer.
! 3838: // If they differ then that line needs redrawing on the terminal.
! 3839: //
! 3840: static void refresh(int full_screen)
! 3841: {
! 3842: static int old_offset;
! 3843: int li, changed;
! 3844: Byte buf[MAX_SCR_COLS];
! 3845: Byte *tp, *sp; // pointer into text[] and screen[]
! 3846: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3847: int last_li = -2; // last line that changed- for optimizing cursor movement
! 3848: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3849:
! 3850: #ifdef BB_FEATURE_VI_WIN_RESIZE
! 3851: window_size_get (0);
! 3852: #endif /* BB_FEATURE_VI_WIN_RESIZE */
! 3853: sync_cursor (dot, &crow, &ccol); // where cursor will be (on "dot")
! 3854: tp = screenbegin; // index into text[] of top line
! 3855:
! 3856: // compare text[] to screen[] and mark screen[] lines that need updating
! 3857: for (li = 0; li < rows - 1; li++) {
! 3858: int cs, ce; // column start & end
! 3859: memset (buf, ' ', MAX_SCR_COLS); // blank-out the buffer
! 3860: buf[MAX_SCR_COLS - 1] = 0; // NULL terminate the buffer
! 3861: // format current text line into buf
! 3862: format_line (buf, tp, li);
! 3863:
! 3864: // skip to the end of the current text[] line
! 3865: while (tp < end && *tp++ != '\n') /*no-op */ ;
! 3866:
! 3867: // see if there are any changes between vitual screen and buf
! 3868: changed = FALSE; // assume no change
! 3869: cs = 0;
! 3870: ce = columns - 1;
! 3871: sp = &screen[li * columns]; // start of screen line
! 3872: if (full_screen == TRUE) {
! 3873: // force re-draw of every single column from 0 - columns-1
! 3874: goto re0;
! 3875: }
! 3876: // compare newly formatted buffer with virtual screen
! 3877: // look forward for first difference between buf and screen
! 3878: for (; cs <= ce; cs++) {
! 3879: if (buf[cs + offset] != sp[cs]) {
! 3880: changed = TRUE; // mark for redraw
! 3881: break;
! 3882: }
! 3883: }
! 3884:
! 3885: // look backward for last difference between buf and screen
! 3886: for (; ce >= cs; ce--) {
! 3887: if (buf[ce + offset] != sp[ce]) {
! 3888: changed = TRUE; // mark for redraw
! 3889: break;
! 3890: }
! 3891: }
! 3892: // now, cs is index of first diff, and ce is index of last diff
! 3893:
! 3894: // if horz offset has changed, force a redraw
! 3895: if (offset != old_offset) {
! 3896: re0:
! 3897: changed = TRUE;
! 3898: }
! 3899:
! 3900: // make a sanity check of columns indexes
! 3901: if (cs < 0) cs = 0;
! 3902: if (ce > columns - 1) ce = columns - 1;
! 3903: if (cs > ce) { cs = 0; ce = columns - 1; }
! 3904: // is there a change between vitual screen and buf
! 3905: if (changed == TRUE) {
! 3906: // copy changed part of buffer to virtual screen
! 3907: memmove (sp + cs, buf + (cs + offset), ce - cs + 1);
! 3908:
! 3909: // move cursor to column of first change
! 3910: if (offset != old_offset) {
! 3911: // opti_cur_move is still too stupid
! 3912: // to handle offsets correctly
! 3913: place_cursor (li, cs, FALSE);
! 3914: } else {
! 3915: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3916: // if this just the next line
! 3917: // try to optimize cursor movement
! 3918: // otherwise, use standard ESC sequence
! 3919: place_cursor (li, cs, li == (last_li + 1) ? TRUE : FALSE);
! 3920: last_li = li;
! 3921: #else /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3922: place_cursor (li, cs, FALSE); // use standard ESC sequence
! 3923: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3924: }
! 3925:
! 3926: // write line out to terminal
! 3927: write (1, sp + cs, ce - cs + 1);
! 3928: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3929: last_row = li;
! 3930: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3931: }
! 3932: }
! 3933:
! 3934: #ifdef BB_FEATURE_VI_OPTIMIZE_CURSOR
! 3935: place_cursor (crow, ccol, (crow == last_row) ? TRUE : FALSE);
! 3936: last_row = crow;
! 3937: #else
! 3938: place_cursor (crow, ccol, FALSE);
! 3939: #endif /* BB_FEATURE_VI_OPTIMIZE_CURSOR */
! 3940:
! 3941: if (offset != old_offset)
! 3942: old_offset = offset;
! 3943: }
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