Annotation of src/usr.bin/mg/main.c, Revision 1.79
1.79 ! deraadt 1: /* $OpenBSD: main.c,v 1.78 2015/11/11 15:10:20 deraadt 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;
1.78 deraadt 58:
1.79 ! deraadt 59: if (pledge("stdio rpath wpath cpath fattr getpw proc exec tty", NULL) == -1)
1.78 deraadt 60: err(1, "pledge");
1.24 vincent 61:
1.56 cloder 62: while ((o = getopt(argc, argv, "nf:")) != -1)
1.24 vincent 63: switch (o) {
1.35 henning 64: case 'n':
65: nobackups = 1;
66: break;
1.24 vincent 67: case 'f':
68: if (init_fcn_name != NULL)
69: errx(1, "cannot specify more than one "
70: "initial function");
71: init_fcn_name = optarg;
72: break;
73: default:
1.53 kjell 74: usage();
1.24 vincent 75: }
76: argc -= optind;
77: argv += optind;
1.70 naddy 78:
79: setlocale(LC_CTYPE, "");
1.1 deraadt 80:
1.12 art 81: maps_init(); /* Keymaps and modes. */
1.11 art 82: funmap_init(); /* Functions. */
1.19 vincent 83:
1.13 art 84: /*
85: * This is where we initialize standalone extensions that should
86: * be loaded dynamically sometime in the future.
87: */
88: {
89: extern void grep_init(void);
1.14 art 90: extern void theo_init(void);
1.58 kjell 91: extern void cmode_init(void);
1.42 kjell 92: extern void dired_init(void);
1.13 art 93:
1.42 kjell 94: dired_init();
1.13 art 95: grep_init();
1.14 art 96: theo_init();
1.58 kjell 97: cmode_init();
1.13 art 98: }
1.5 millert 99:
1.24 vincent 100: if (init_fcn_name &&
101: (init_fcn = name_function(init_fcn_name)) == NULL)
102: errx(1, "Unknown function `%s'", init_fcn_name);
103:
104: vtinit(); /* Virtual terminal. */
105: dirinit(); /* Get current directory. */
1.66 lum 106: edinit(bp); /* Buffers, windows. */
1.24 vincent 107: ttykeymapinit(); /* Symbols, bindings. */
1.71 lum 108: bellinit(); /* Audible and visible bell. */
1.24 vincent 109:
1.4 millert 110: /*
111: * doing update() before reading files causes the error messages from
112: * the file I/O show up on the screen. (and also an extra display of
113: * the mode line if there are files specified on the command line.)
1.1 deraadt 114: */
1.71 lum 115: update(CMODE);
1.5 millert 116:
1.65 lum 117: /* user startup file. */
118: if ((cp = startupfile(NULL)) != NULL)
119: (void)load(cp);
120:
1.77 jasper 121: /*
1.65 lum 122: * Now ensure any default buffer modes from the startup file are
123: * given to any files opened when parsing the startup file.
124: * Note *scratch* will also be updated.
125: */
126: for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
127: bp->b_flag = defb_flag;
128: for (i = 0; i <= defb_nmodes; i++) {
129: bp->b_modes[i] = defb_modes[i];
130: }
131: }
1.59 kjell 132:
133: /* Force FFOTHARG=1 so that this mode is enabled, not simply toggled */
134: if (init_fcn)
135: init_fcn(FFOTHARG, 1);
136:
1.35 henning 137: if (nobackups)
138: makebkfile(FFARG, 0);
1.27 vincent 139:
140: for (nfiles = 0, i = 0; i < argc; i++) {
141: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.43 deraadt 142: long long lval;
1.30 pvalchev 143: const char *errstr;
1.23 deraadt 144:
1.32 vincent 145: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
1.33 vincent 146: if (argv[i][1] == '\0' || errstr != NULL)
1.23 deraadt 147: goto notnum;
1.30 pvalchev 148: startrow = lval;
1.24 vincent 149: } else {
1.23 deraadt 150: notnum:
1.52 jason 151: cp = adjustname(argv[i], FALSE);
1.24 vincent 152: if (cp != NULL) {
1.38 db 153: if (nfiles == 1)
1.27 vincent 154: splitwind(0, 1);
1.38 db 155:
1.76 lum 156: if (fisdir(cp) == TRUE) {
157: (void)do_dired(cp);
1.77 jasper 158: continue;
1.76 lum 159: }
1.39 beck 160: if ((curbp = findbuffer(cp)) == NULL) {
161: vttidy();
162: errx(1, "Can't find current buffer!");
163: }
1.24 vincent 164: (void)showbuffer(curbp, curwp, 0);
1.44 deraadt 165: if (readin(cp) != TRUE)
1.34 jfb 166: killbuffer(curbp);
1.38 db 167: else {
1.59 kjell 168: /* Ensure enabled, not just toggled */
1.34 jfb 169: if (init_fcn_name)
1.59 kjell 170: init_fcn(FFOTHARG, 1);
1.34 jfb 171: nfiles++;
172: }
1.24 vincent 173: }
1.22 vincent 174: }
1.1 deraadt 175: }
1.29 vincent 176:
177: if (nfiles > 2)
178: listbuffers(0, 1);
1.5 millert 179:
180: /* fake last flags */
181: thisflag = 0;
1.4 millert 182: for (;;) {
1.50 kjell 183: if (epresf == KCLEAR)
1.4 millert 184: eerase();
1.50 kjell 185: if (epresf == TRUE)
186: epresf = KCLEAR;
1.17 deraadt 187: if (winch_flag) {
1.49 otto 188: do_redraw(0, 0, TRUE);
1.17 deraadt 189: winch_flag = 0;
190: }
1.71 lum 191: update(CMODE);
1.4 millert 192: lastflag = thisflag;
193: thisflag = 0;
1.5 millert 194:
1.4 millert 195: switch (doin()) {
196: case TRUE:
197: break;
1.1 deraadt 198: case ABORT:
1.5 millert 199: ewprintf("Quit");
1.48 kjell 200: /* FALLTHRU */
1.1 deraadt 201: case FALSE:
202: default:
1.4 millert 203: macrodef = FALSE;
204: }
1.1 deraadt 205: }
206: }
207:
208: /*
1.66 lum 209: * Initialize default buffer and window. Default buffer is called *scratch*.
1.1 deraadt 210: */
1.7 art 211: static void
1.66 lum 212: edinit(struct buffer *bp)
1.4 millert 213: {
1.45 deraadt 214: struct mgwin *wp;
1.1 deraadt 215:
216: bheadp = NULL;
1.66 lum 217: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.63 lum 218: if (bp == NULL)
219: panic("edinit");
220:
1.26 vincent 221: wp = new_window(bp);
1.21 vincent 222: if (wp == NULL)
1.66 lum 223: panic("edinit: Out of memory");
1.63 lum 224:
1.66 lum 225: curbp = bp; /* Current buffer. */
1.1 deraadt 226: wheadp = wp;
1.4 millert 227: curwp = wp;
1.5 millert 228: wp->w_wndp = NULL; /* Initialize window. */
1.54 kjell 229: wp->w_linep = wp->w_dotp = bp->b_headp;
1.38 db 230: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
1.61 kjell 231: wp->w_rflag = WFMODE | WFFULL; /* Full. */
1.1 deraadt 232: }
233:
234: /*
1.5 millert 235: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
236: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 237: */
1.4 millert 238: /* ARGSUSED */
1.5 millert 239: int
1.20 vincent 240: quit(int f, int n)
1.1 deraadt 241: {
1.5 millert 242: int s;
1.1 deraadt 243:
1.4 millert 244: if ((s = anycb(FALSE)) == ABORT)
1.38 db 245: return (ABORT);
1.69 lum 246: if (s == FIOERR || s == UERROR)
1.68 lum 247: return (FALSE);
1.1 deraadt 248: if (s == FALSE
1.41 kjell 249: || eyesno("Modified buffers exist; really exit") == TRUE) {
1.1 deraadt 250: vttidy();
1.62 lum 251: closetags();
1.73 florian 252: exit(0);
1.1 deraadt 253: }
1.38 db 254: return (TRUE);
1.1 deraadt 255: }
256:
257: /*
1.10 mickey 258: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 259: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 260: */
1.4 millert 261: /* ARGSUSED */
262: int
1.20 vincent 263: ctrlg(int f, int n)
1.1 deraadt 264: {
1.24 vincent 265: return (ABORT);
1.1 deraadt 266: }
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