Annotation of src/usr.bin/mg/main.c, Revision 1.75
1.75 ! bcallah 1: /* $OpenBSD: main.c,v 1.74 2014/11/16 04:16:41 guenther Exp $ */
1.40 kjell 2:
3: /* This file is in the public domain. */
1.6 niklas 4:
1.1 deraadt 5: /*
1.5 millert 6: * Mainline.
1.1 deraadt 7: */
1.5 millert 8:
1.75 ! bcallah 9: #include <sys/queue.h>
! 10: #include <err.h>
! 11: #include <limits.h>
! 12: #include <locale.h>
! 13: #include <signal.h>
! 14: #include <stdio.h>
! 15: #include <stdlib.h>
! 16: #include <string.h>
! 17: #include <unistd.h>
! 18:
1.38 db 19: #include "def.h"
20: #include "kbd.h"
21: #include "funmap.h"
22: #include "macro.h"
1.24 vincent 23:
1.5 millert 24: int thisflag; /* flags, this command */
25: int lastflag; /* flags, last command */
26: int curgoal; /* goal column */
1.36 deraadt 27: int startrow; /* row to start */
1.71 lum 28: int doaudiblebell; /* audible bell toggle */
29: int dovisiblebell; /* visible bell toggle */
1.55 deraadt 30: struct buffer *curbp; /* current buffer */
1.53 kjell 31: struct buffer *bheadp; /* BUFFER list head */
32: struct mgwin *curwp; /* current window */
33: struct mgwin *wheadp; /* MGWIN listhead */
1.5 millert 34: char pat[NPAT]; /* pattern */
1.1 deraadt 35:
1.66 lum 36: static void edinit(struct buffer *);
1.53 kjell 37: static __dead void usage(void);
38:
39: extern char *__progname;
1.62 lum 40: extern void closetags(void);
1.53 kjell 41:
42: static __dead void
43: usage()
44: {
1.57 sobrado 45: fprintf(stderr, "usage: %s [-n] [-f mode] [+number] [file ...]\n",
1.53 kjell 46: __progname);
47: exit(1);
48: }
1.1 deraadt 49:
1.2 deraadt 50: int
1.19 vincent 51: main(int argc, char **argv)
1.1 deraadt 52: {
1.66 lum 53: char *cp, *init_fcn_name = NULL;
54: PF init_fcn = NULL;
55: int o, i, nfiles;
56: int nobackups = 0;
57: struct buffer *bp = NULL;
1.24 vincent 58:
1.56 cloder 59: while ((o = getopt(argc, argv, "nf:")) != -1)
1.24 vincent 60: switch (o) {
1.35 henning 61: case 'n':
62: nobackups = 1;
63: break;
1.24 vincent 64: case 'f':
65: if (init_fcn_name != NULL)
66: errx(1, "cannot specify more than one "
67: "initial function");
68: init_fcn_name = optarg;
69: break;
70: default:
1.53 kjell 71: usage();
1.24 vincent 72: }
73: argc -= optind;
74: argv += optind;
1.70 naddy 75:
76: setlocale(LC_CTYPE, "");
1.1 deraadt 77:
1.12 art 78: maps_init(); /* Keymaps and modes. */
1.11 art 79: funmap_init(); /* Functions. */
1.19 vincent 80:
1.13 art 81: /*
82: * This is where we initialize standalone extensions that should
83: * be loaded dynamically sometime in the future.
84: */
85: {
86: extern void grep_init(void);
1.14 art 87: extern void theo_init(void);
1.58 kjell 88: extern void cmode_init(void);
1.42 kjell 89: extern void dired_init(void);
1.13 art 90:
1.42 kjell 91: dired_init();
1.13 art 92: grep_init();
1.14 art 93: theo_init();
1.58 kjell 94: cmode_init();
1.13 art 95: }
1.5 millert 96:
1.24 vincent 97: if (init_fcn_name &&
98: (init_fcn = name_function(init_fcn_name)) == NULL)
99: errx(1, "Unknown function `%s'", init_fcn_name);
100:
101: vtinit(); /* Virtual terminal. */
102: dirinit(); /* Get current directory. */
1.66 lum 103: edinit(bp); /* Buffers, windows. */
1.24 vincent 104: ttykeymapinit(); /* Symbols, bindings. */
1.71 lum 105: bellinit(); /* Audible and visible bell. */
1.24 vincent 106:
1.4 millert 107: /*
108: * doing update() before reading files causes the error messages from
109: * the file I/O show up on the screen. (and also an extra display of
110: * the mode line if there are files specified on the command line.)
1.1 deraadt 111: */
1.71 lum 112: update(CMODE);
1.5 millert 113:
1.65 lum 114: /* user startup file. */
115: if ((cp = startupfile(NULL)) != NULL)
116: (void)load(cp);
117:
118: /*
119: * Now ensure any default buffer modes from the startup file are
120: * given to any files opened when parsing the startup file.
121: * Note *scratch* will also be updated.
122: */
123: for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
124: bp->b_flag = defb_flag;
125: for (i = 0; i <= defb_nmodes; i++) {
126: bp->b_modes[i] = defb_modes[i];
127: }
128: }
1.59 kjell 129:
130: /* Force FFOTHARG=1 so that this mode is enabled, not simply toggled */
131: if (init_fcn)
132: init_fcn(FFOTHARG, 1);
133:
1.35 henning 134: if (nobackups)
135: makebkfile(FFARG, 0);
1.27 vincent 136:
137: for (nfiles = 0, i = 0; i < argc; i++) {
138: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.43 deraadt 139: long long lval;
1.30 pvalchev 140: const char *errstr;
1.23 deraadt 141:
1.32 vincent 142: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
1.33 vincent 143: if (argv[i][1] == '\0' || errstr != NULL)
1.23 deraadt 144: goto notnum;
1.30 pvalchev 145: startrow = lval;
1.24 vincent 146: } else {
1.23 deraadt 147: notnum:
1.52 jason 148: cp = adjustname(argv[i], FALSE);
1.24 vincent 149: if (cp != NULL) {
1.38 db 150: if (nfiles == 1)
1.27 vincent 151: splitwind(0, 1);
1.38 db 152:
1.39 beck 153: if ((curbp = findbuffer(cp)) == NULL) {
154: vttidy();
155: errx(1, "Can't find current buffer!");
156: }
1.24 vincent 157: (void)showbuffer(curbp, curwp, 0);
1.44 deraadt 158: if (readin(cp) != TRUE)
1.34 jfb 159: killbuffer(curbp);
1.38 db 160: else {
1.59 kjell 161: /* Ensure enabled, not just toggled */
1.34 jfb 162: if (init_fcn_name)
1.59 kjell 163: init_fcn(FFOTHARG, 1);
1.34 jfb 164: nfiles++;
165: }
1.24 vincent 166: }
1.22 vincent 167: }
1.1 deraadt 168: }
1.29 vincent 169:
170: if (nfiles > 2)
171: listbuffers(0, 1);
1.5 millert 172:
173: /* fake last flags */
174: thisflag = 0;
1.4 millert 175: for (;;) {
1.50 kjell 176: if (epresf == KCLEAR)
1.4 millert 177: eerase();
1.50 kjell 178: if (epresf == TRUE)
179: epresf = KCLEAR;
1.17 deraadt 180: if (winch_flag) {
1.49 otto 181: do_redraw(0, 0, TRUE);
1.17 deraadt 182: winch_flag = 0;
183: }
1.71 lum 184: update(CMODE);
1.4 millert 185: lastflag = thisflag;
186: thisflag = 0;
1.5 millert 187:
1.4 millert 188: switch (doin()) {
189: case TRUE:
190: break;
1.1 deraadt 191: case ABORT:
1.5 millert 192: ewprintf("Quit");
1.48 kjell 193: /* FALLTHRU */
1.1 deraadt 194: case FALSE:
195: default:
1.4 millert 196: macrodef = FALSE;
197: }
1.1 deraadt 198: }
199: }
200:
201: /*
1.66 lum 202: * Initialize default buffer and window. Default buffer is called *scratch*.
1.1 deraadt 203: */
1.7 art 204: static void
1.66 lum 205: edinit(struct buffer *bp)
1.4 millert 206: {
1.45 deraadt 207: struct mgwin *wp;
1.1 deraadt 208:
209: bheadp = NULL;
1.66 lum 210: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.63 lum 211: if (bp == NULL)
212: panic("edinit");
213:
1.26 vincent 214: wp = new_window(bp);
1.21 vincent 215: if (wp == NULL)
1.66 lum 216: panic("edinit: Out of memory");
1.63 lum 217:
1.66 lum 218: curbp = bp; /* Current buffer. */
1.1 deraadt 219: wheadp = wp;
1.4 millert 220: curwp = wp;
1.5 millert 221: wp->w_wndp = NULL; /* Initialize window. */
1.54 kjell 222: wp->w_linep = wp->w_dotp = bp->b_headp;
1.38 db 223: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
1.61 kjell 224: wp->w_rflag = WFMODE | WFFULL; /* Full. */
1.1 deraadt 225: }
226:
227: /*
1.5 millert 228: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
229: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 230: */
1.4 millert 231: /* ARGSUSED */
1.5 millert 232: int
1.20 vincent 233: quit(int f, int n)
1.1 deraadt 234: {
1.5 millert 235: int s;
1.1 deraadt 236:
1.4 millert 237: if ((s = anycb(FALSE)) == ABORT)
1.38 db 238: return (ABORT);
1.69 lum 239: if (s == FIOERR || s == UERROR)
1.68 lum 240: return (FALSE);
1.1 deraadt 241: if (s == FALSE
1.41 kjell 242: || eyesno("Modified buffers exist; really exit") == TRUE) {
1.1 deraadt 243: vttidy();
1.62 lum 244: closetags();
1.73 florian 245: exit(0);
1.1 deraadt 246: }
1.38 db 247: return (TRUE);
1.1 deraadt 248: }
249:
250: /*
1.10 mickey 251: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 252: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 253: */
1.4 millert 254: /* ARGSUSED */
255: int
1.20 vincent 256: ctrlg(int f, int n)
1.1 deraadt 257: {
1.24 vincent 258: return (ABORT);
1.1 deraadt 259: }
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