513 lines
9.9 KiB
C
513 lines
9.9 KiB
C
/* main.c */
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/* Author:
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* Steve Kirkendall
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* 14407 SW Teal Blvd. #C
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* Beaverton, OR 97005
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* kirkenda@cs.pdx.edu
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*/
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/* This file contains the main() function of vi */
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/* HACK! bcc needs to disable use of precompiled headers for this file,
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or else command line args will not be passed to elvis */
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#if __BORLANDC__
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#include "borland.h"
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#endif
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#include "config.h"
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#include <setjmp.h>
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#include "vi.h"
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extern trapint(); /* defined below */
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extern char *getenv();
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jmp_buf jmpenv;
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#ifndef NO_DIGRAPH
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static init_digraphs();
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#endif
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/*---------------------------------------------------------------------*/
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#if AMIGA
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# include "amiwild.c"
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main (argc, argv)
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#else
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# if VMS
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# include "vmswild.c"
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main (argc, argv)
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# else
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int main(argc, argv)
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# endif
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#endif
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int argc;
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char *argv[];
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{
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int i;
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char *cmd = (char *)0;
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char *err = (char *)0;
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char *str;
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char *tag = (char *)0;
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/* set mode to MODE_VI or MODE_EX depending on program name */
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switch (argv[0][strlen(argv[0]) - 1])
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{
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case 'x': /* "ex" */
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mode = MODE_EX;
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break;
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case 'w': /* "view" */
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mode = MODE_VI;
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*o_readonly = TRUE;
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break;
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#ifndef NO_EXTENSIONS
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case 't': /* "edit" or "input" */
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mode = MODE_VI;
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*o_inputmode = TRUE;
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break;
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#endif
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default: /* "vi" or "elvis" */
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mode = MODE_VI;
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}
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#ifndef DEBUG
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# ifdef SIGQUIT
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/* normally, we ignore SIGQUIT. SIGINT is trapped later */
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signal(SIGQUIT, SIG_IGN);
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# endif
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#endif
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/* temporarily ignore SIGINT */
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signal(SIGINT, SIG_IGN);
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/* start curses */
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initscr();
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cbreak();
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noecho();
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scrollok(stdscr, TRUE);
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/* arrange for deadly signals to be caught */
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# ifdef SIGHUP
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signal(SIGHUP, (void(*)()) deathtrap);
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# endif
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# ifndef DEBUG
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# ifdef SIGILL
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signal(SIGILL, (void(*)()) deathtrap);
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# endif
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# ifdef SIGBUS
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signal(SIGBUS, (void(*)()) deathtrap);
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# endif
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# ifdef SIGSEGV
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signal(SIGSEGV, (void(*)()) deathtrap);
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# endif
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# ifdef SIGSYS
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signal(SIGSYS, (void(*)()) deathtrap);
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# endif
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# endif /* !DEBUG */
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# ifdef SIGPIPE
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signal(SIGPIPE, (void(*)()) deathtrap);
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# endif
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# ifdef SIGTERM
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signal(SIGTERM, (void(*)()) deathtrap);
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# endif
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# ifdef SIGUSR1
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signal(SIGUSR1, (void(*)()) deathtrap);
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# endif
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# ifdef SIGUSR2
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signal(SIGUSR2, (void(*)()) deathtrap);
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# endif
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/* initialize the options - must be done after initscr(), so that
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* we can alter LINES and COLS if necessary.
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*/
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initopts();
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/* map the arrow keys. The KU,KD,KL,and KR variables correspond to
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* the :ku=: (etc.) termcap capabilities. The variables are defined
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* as part of the curses package.
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*/
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if (has_KU) mapkey(has_KU, "k", WHEN_VICMD|WHEN_INMV, "<Up>");
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if (has_KD) mapkey(has_KD, "j", WHEN_VICMD|WHEN_INMV, "<Down>");
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if (has_KL) mapkey(has_KL, "h", WHEN_VICMD|WHEN_INMV, "<Left>");
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if (has_KR) mapkey(has_KR, "l", WHEN_VICMD|WHEN_INMV, "<Right>");
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if (has_HM) mapkey(has_HM, "^", WHEN_VICMD|WHEN_INMV, "<Home>");
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if (has_EN) mapkey(has_EN, "$", WHEN_VICMD|WHEN_INMV, "<End>");
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if (has_PU) mapkey(has_PU, "\002", WHEN_VICMD|WHEN_INMV, "<PageUp>");
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if (has_PD) mapkey(has_PD, "\006", WHEN_VICMD|WHEN_INMV, "<PageDn>");
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if (has_KI) mapkey(has_KI, "i", WHEN_VICMD|WHEN_INMV, "<Insert>");
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#if MSDOS
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# if RAINBOW
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if (!strcmp("rainbow", o_term))
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{
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mapkey("\033[1~", "/", WHEN_VICMD, "<Find>");
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mapkey("\033[3~", "x", WHEN_VICMD|WHEN_INMV, "<Remove>");
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mapkey("\033[4~", "v", WHEN_VICMD|WHEN_INMV, "<Select>");
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mapkey("\033[17~", ":sh\n", WHEN_VICMD, "<Intrpt>");
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mapkey("\033[19~", ":q\n", WHEN_VICMD, "<Cancel>");
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mapkey("\033[21~", "ZZ", WHEN_VICMD, "<Exit>");
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mapkey("\033[26~", "V", WHEN_VICMD|WHEN_INMV, "<AddlOp>");
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mapkey("\033[28~", "\\", WHEN_VICMD|WHEN_INMV, "<Help>");
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mapkey("\033[29~", "K", WHEN_VICMD|WHEN_INMV, "<Do>");
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}
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else
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# endif /* RAINBOW */
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{
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mapkey("#S", "x", WHEN_VICMD|WHEN_INMV, "<Delete>");
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mapkey("#s", "B", WHEN_VICMD|WHEN_INMV, "^<Left>");
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mapkey("#t", "W", WHEN_VICMD|WHEN_INMV, "^<Right>");
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}
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#else /* not MSDOS */
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# if COHERENT
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mapkey("\033[P", "x", WHEN_VICMD|WHEN_INMV, "<Del>");
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# else
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#if AMIGA
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mapkey("\233?~", "\\", WHEN_VICMD|WHEN_INMV, "<Help>");
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#endif
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if (ERASEKEY != '\177')
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{
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mapkey("\177", "x", WHEN_VICMD|WHEN_INMV, "<Del>");
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}
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# endif
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#endif
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#ifndef NO_DIGRAPH
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init_digraphs();
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#endif /* NO_DIGRAPH */
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/* process any flags */
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for (i = 1; i < argc && *argv[i] == '-'; i++)
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{
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switch (argv[i][1])
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{
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case 'R': /* readonly */
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*o_readonly = TRUE;
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break;
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case 'L':
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case 'r': /* recover */
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msg("Use the `elvrec` program to recover lost files");
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endmsgs();
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refresh();
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endwin();
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exit(0);
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break;
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case 't': /* tag */
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if (argv[i][2])
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{
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tag = argv[i] + 2;
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}
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else
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{
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tag = argv[++i];
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}
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break;
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case 'v': /* vi mode */
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mode = MODE_VI;
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break;
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case 'e': /* ex mode */
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mode = MODE_EX;
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break;
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#ifndef NO_EXTENSIONS
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case 'i': /* input mode */
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*o_inputmode = TRUE;
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break;
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#endif
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#ifndef NO_ERRLIST
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case 'm': /* use "errlist" as the errlist */
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if (argv[i][2])
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{
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err = argv[i] + 2;
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}
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else if (i + 1 < argc)
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{
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err = argv[++i];
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}
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else
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{
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err = "";
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}
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break;
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#endif
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#ifndef CRUNCH
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case 'c': /* run the following command, later */
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if (argv[i][2])
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{
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cmd = argv[i] + 2;
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}
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else
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{
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cmd = argv[++i];
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}
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break;
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case 'w': /* set the window size */
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if (argv[i][2])
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{
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*o_window = atoi(argv[i] + 2);
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wset = TRUE;
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}
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else
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{
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*o_window = atoi(argv[++i]);
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wset = TRUE;
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}
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break;
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#endif
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default:
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msg("Ignoring unknown flag \"%s\"", argv[i]);
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}
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}
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/* if we were given an initial ex command, save it... */
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if (i < argc && *argv[i] == '+')
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{
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if (argv[i][1])
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{
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cmd = argv[i++] + 1;
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}
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else
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{
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cmd = "$"; /* "vi + file" means start at EOF */
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i++;
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}
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}
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/* the remaining args are file names. */
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if (i < argc)
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{
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strcpy(args, argv[i]);
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while (++i < argc && strlen(args) + 1 + strlen(argv[i]) < sizeof args)
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{
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strcat(args, " ");
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strcat(args, argv[i]);
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}
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#if MSDOS || TOS
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/* expand wildcard characters, if necessary */
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if (strchr(args, '*') || strchr(args, '?'))
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{
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strcpy(args, wildcard(args));
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}
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#endif
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strcpy(tmpblk.c, args);
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cmd_args(MARK_UNSET, MARK_UNSET, CMD_ARGS, TRUE, tmpblk.c);
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}
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else
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{
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/* empty args list */
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args[0] = '\0';
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nargs = 1;
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argno = -1;
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}
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/* perform the .exrc files and EXINIT environment variable */
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#ifdef SYSEXRC
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doexrc(SYSEXRC);
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#endif
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#ifdef HMEXRC
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str = getenv("HOME");
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if (str && *str)
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{
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strcpy(tmpblk.c, str);
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str = tmpblk.c + strlen(tmpblk.c);
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#if !VMS
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# if AMIGA /* Don't SLASH a device. "Elvis:.exrc" */
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if (str[-1] != COLON && str[-1] != SLASH)
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# else
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if (str[-1] != SLASH)
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# endif
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{
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*str++ = SLASH;
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}
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#endif
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strcpy(str, HMEXRC);
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doexrc(tmpblk.c);
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}
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#endif
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#ifndef CRUNCH
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if (*o_exrc)
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#endif
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{
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doexrc(EXRC);
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}
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#ifdef EXINIT
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str = getenv(EXINIT);
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if (str)
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{
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exstring(str, strlen(str), ctrl('V'));
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}
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#endif
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/* search for a tag (or an error) now, if desired */
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blkinit();
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if (tag)
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{
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cmd_tag(MARK_FIRST, MARK_FIRST, CMD_TAG, 0, tag);
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}
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#ifndef NO_ERRLIST
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else if (err)
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{
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cmd_errlist(MARK_FIRST, MARK_FIRST, CMD_ERRLIST, 0, err);
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}
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#endif
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/* if no tag/err, or tag failed, then start with first arg */
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if (tmpfd < 0)
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{
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/* start with first arg */
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cmd_next(MARK_UNSET, MARK_UNSET, CMD_NEXT, FALSE, "");
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/* pretend to do something, just to force a recoverable
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* version of the file out to disk
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*/
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ChangeText
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{
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}
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clrflag(file, MODIFIED);
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}
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/* now we do the immediate ex command that we noticed before */
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if (cmd)
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{
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doexcmd(cmd);
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}
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/* repeatedly call ex() or vi() (depending on the mode) until the
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* mode is set to MODE_QUIT
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*/
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while (mode != MODE_QUIT)
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{
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if (setjmp(jmpenv))
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{
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/* Maybe we just aborted a change? */
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abortdo();
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}
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signal(SIGINT, (void(*)()) trapint);
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switch (mode)
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{
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case MODE_VI:
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vi();
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break;
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case MODE_EX:
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ex();
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break;
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#ifdef DEBUG
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default:
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msg("mode = %d?", mode);
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mode = MODE_QUIT;
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#endif
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}
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}
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/* free up the cut buffers */
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cutend();
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/* end curses */
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#ifndef NO_CURSORSHAPE
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if (has_CQ)
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do_CQ();
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#endif
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endmsgs();
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move(LINES - 1, 0);
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clrtoeol();
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refresh();
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endwin();
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exit(0);
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/*NOTREACHED*/
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}
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/*ARGSUSED*/
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int trapint(signo)
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int signo;
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{
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beep();
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resume_curses(FALSE);
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abortdo();
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#if OSK
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sigmask(-1);
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#endif
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signal(signo, (void (*)())trapint);
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doingglobal = FALSE;
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longjmp(jmpenv, 1);
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return 0;
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}
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#ifndef NO_DIGRAPH
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/* This stuff us used to build the default digraphs table. */
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static char digtable[][4] =
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{
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# ifdef CS_IBMPC
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"C,\200", "u\"\1", "e'\2", "a^\3",
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"a\"\4", "a`\5", "a@\6", "c,\7",
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"e^\10", "e\"\211", "e`\12", "i\"\13",
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"i^\14", "i`\15", "A\"\16", "A@\17",
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"E'\20", "ae\21", "AE\22", "o^\23",
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"o\"\24", "o`\25", "u^\26", "u`\27",
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"y\"\30", "O\"\31", "U\"\32", "a'\240",
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"i'!", "o'\"", "u'#", "n~$",
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"N~%", "a-&", "o-'", "~?(",
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"~!-", "\"<.", "\">/",
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# ifdef CS_SPECIAL
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"2/+", "4/,", "^+;", "^q<",
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"^c=", "^r>", "^t?", "pp]",
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"^^^", "oo_", "*a`", "*ba",
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"*pc", "*Sd", "*se", "*uf",
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"*tg", "*Ph", "*Ti", "*Oj",
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"*dk", "*Hl", "*hm", "*En",
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"*No", "eqp", "pmq", "ger",
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"les", "*It", "*iu", "*/v",
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"*=w", "sq{", "^n|", "^2}",
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"^3~", "^_\377",
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# endif /* CS_SPECIAL */
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# endif /* CS_IBMPC */
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# ifdef CS_LATIN1
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"~!!", "a-*", "\">+", "o-:",
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"\"<>", "~??",
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"A`@", "A'A", "A^B", "A~C",
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"A\"D", "A@E", "AEF", "C,G",
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"E`H", "E'I", "E^J", "E\"K",
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"I`L", "I'M", "I^N", "I\"O",
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"-DP", "N~Q", "O`R", "O'S",
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"O^T", "O~U", "O\"V", "O/X",
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"U`Y", "U'Z", "U^[", "U\"\\",
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"Y'_",
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"a``", "a'a", "a^b", "a~c",
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"a\"d", "a@e", "aef", "c,g",
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"e`h", "e'i", "e^j", "e\"k",
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"i`l", "i'm", "i^n", "i\"o",
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"-dp", "n~q", "o`r", "o's",
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"o^t", "o~u", "o\"v", "o/x",
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"u`y", "u'z", "u^{", "u\"|",
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"y'~",
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# endif /* CS_LATIN1 */
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""
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};
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static init_digraphs()
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{
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int i;
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for (i = 0; *digtable[i]; i++)
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{
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do_digraph(FALSE, digtable[i]);
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}
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do_digraph(FALSE, (char *)0);
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return 0;
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}
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#endif /* NO_DIGRAPH */
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