Annotation of src/usr.bin/mg/main.c, Revision 1.68
1.68 ! lum 1: /* $OpenBSD: main.c,v 1.67 2012/05/29 06:08:48 lum 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:
1.38 db 9: #include "def.h"
10: #include "kbd.h"
11: #include "funmap.h"
12: #include "macro.h"
1.1 deraadt 13:
1.24 vincent 14: #include <err.h>
15:
1.5 millert 16: int thisflag; /* flags, this command */
17: int lastflag; /* flags, last command */
18: int curgoal; /* goal column */
1.36 deraadt 19: int startrow; /* row to start */
1.55 deraadt 20: struct buffer *curbp; /* current buffer */
1.53 kjell 21: struct buffer *bheadp; /* BUFFER list head */
22: struct mgwin *curwp; /* current window */
23: struct mgwin *wheadp; /* MGWIN listhead */
1.5 millert 24: char pat[NPAT]; /* pattern */
1.1 deraadt 25:
1.66 lum 26: static void edinit(struct buffer *);
1.53 kjell 27: static __dead void usage(void);
28:
29: extern char *__progname;
1.62 lum 30: extern void closetags(void);
1.53 kjell 31:
32: static __dead void
33: usage()
34: {
1.57 sobrado 35: fprintf(stderr, "usage: %s [-n] [-f mode] [+number] [file ...]\n",
1.53 kjell 36: __progname);
37: exit(1);
38: }
1.1 deraadt 39:
1.2 deraadt 40: int
1.19 vincent 41: main(int argc, char **argv)
1.1 deraadt 42: {
1.66 lum 43: char *cp, *init_fcn_name = NULL;
44: PF init_fcn = NULL;
45: int o, i, nfiles;
46: int nobackups = 0;
47: struct buffer *bp = NULL;
1.24 vincent 48:
1.56 cloder 49: while ((o = getopt(argc, argv, "nf:")) != -1)
1.24 vincent 50: switch (o) {
1.35 henning 51: case 'n':
52: nobackups = 1;
53: break;
1.24 vincent 54: case 'f':
55: if (init_fcn_name != NULL)
56: errx(1, "cannot specify more than one "
57: "initial function");
58: init_fcn_name = optarg;
59: break;
60: default:
1.53 kjell 61: usage();
1.24 vincent 62: }
63: argc -= optind;
64: argv += optind;
1.1 deraadt 65:
1.12 art 66: maps_init(); /* Keymaps and modes. */
1.11 art 67: funmap_init(); /* Functions. */
1.19 vincent 68:
1.13 art 69: /*
70: * This is where we initialize standalone extensions that should
71: * be loaded dynamically sometime in the future.
72: */
73: {
74: extern void grep_init(void);
1.14 art 75: extern void theo_init(void);
1.58 kjell 76: extern void cmode_init(void);
1.42 kjell 77: extern void dired_init(void);
1.13 art 78:
1.42 kjell 79: dired_init();
1.13 art 80: grep_init();
1.14 art 81: theo_init();
1.58 kjell 82: cmode_init();
1.13 art 83: }
1.5 millert 84:
1.24 vincent 85: if (init_fcn_name &&
86: (init_fcn = name_function(init_fcn_name)) == NULL)
87: errx(1, "Unknown function `%s'", init_fcn_name);
88:
89: vtinit(); /* Virtual terminal. */
90: dirinit(); /* Get current directory. */
1.66 lum 91: edinit(bp); /* Buffers, windows. */
1.24 vincent 92: ttykeymapinit(); /* Symbols, bindings. */
93:
1.4 millert 94: /*
95: * doing update() before reading files causes the error messages from
96: * the file I/O show up on the screen. (and also an extra display of
97: * the mode line if there are files specified on the command line.)
1.1 deraadt 98: */
99: update();
1.5 millert 100:
1.65 lum 101: /* user startup file. */
102: if ((cp = startupfile(NULL)) != NULL)
103: (void)load(cp);
104:
105: /*
106: * Now ensure any default buffer modes from the startup file are
107: * given to any files opened when parsing the startup file.
108: * Note *scratch* will also be updated.
109: */
110: for (bp = bheadp; bp != NULL; bp = bp->b_bufp) {
111: bp->b_flag = defb_flag;
112: for (i = 0; i <= defb_nmodes; i++) {
113: bp->b_modes[i] = defb_modes[i];
114: }
115: }
1.59 kjell 116:
117: /* Force FFOTHARG=1 so that this mode is enabled, not simply toggled */
118: if (init_fcn)
119: init_fcn(FFOTHARG, 1);
120:
1.35 henning 121: if (nobackups)
122: makebkfile(FFARG, 0);
1.27 vincent 123:
124: for (nfiles = 0, i = 0; i < argc; i++) {
125: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.43 deraadt 126: long long lval;
1.30 pvalchev 127: const char *errstr;
1.23 deraadt 128:
1.32 vincent 129: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
1.33 vincent 130: if (argv[i][1] == '\0' || errstr != NULL)
1.23 deraadt 131: goto notnum;
1.30 pvalchev 132: startrow = lval;
1.24 vincent 133: } else {
1.23 deraadt 134: notnum:
1.52 jason 135: cp = adjustname(argv[i], FALSE);
1.24 vincent 136: if (cp != NULL) {
1.38 db 137: if (nfiles == 1)
1.27 vincent 138: splitwind(0, 1);
1.38 db 139:
1.39 beck 140: if ((curbp = findbuffer(cp)) == NULL) {
141: vttidy();
142: errx(1, "Can't find current buffer!");
143: }
1.24 vincent 144: (void)showbuffer(curbp, curwp, 0);
1.44 deraadt 145: if (readin(cp) != TRUE)
1.34 jfb 146: killbuffer(curbp);
1.38 db 147: else {
1.59 kjell 148: /* Ensure enabled, not just toggled */
1.34 jfb 149: if (init_fcn_name)
1.59 kjell 150: init_fcn(FFOTHARG, 1);
1.34 jfb 151: nfiles++;
152: }
1.24 vincent 153: }
1.22 vincent 154: }
1.1 deraadt 155: }
1.29 vincent 156:
157: if (nfiles > 2)
158: listbuffers(0, 1);
1.5 millert 159:
160: /* fake last flags */
161: thisflag = 0;
1.4 millert 162: for (;;) {
1.50 kjell 163: if (epresf == KCLEAR)
1.4 millert 164: eerase();
1.50 kjell 165: if (epresf == TRUE)
166: epresf = KCLEAR;
1.17 deraadt 167: if (winch_flag) {
1.49 otto 168: do_redraw(0, 0, TRUE);
1.17 deraadt 169: winch_flag = 0;
170: }
1.4 millert 171: update();
172: lastflag = thisflag;
173: thisflag = 0;
1.5 millert 174:
1.4 millert 175: switch (doin()) {
176: case TRUE:
177: break;
1.1 deraadt 178: case ABORT:
1.5 millert 179: ewprintf("Quit");
1.48 kjell 180: /* FALLTHRU */
1.1 deraadt 181: case FALSE:
182: default:
1.4 millert 183: ttbeep();
184: macrodef = FALSE;
185: }
1.1 deraadt 186: }
187: }
188:
189: /*
1.66 lum 190: * Initialize default buffer and window. Default buffer is called *scratch*.
1.1 deraadt 191: */
1.7 art 192: static void
1.66 lum 193: edinit(struct buffer *bp)
1.4 millert 194: {
1.45 deraadt 195: struct mgwin *wp;
1.1 deraadt 196:
197: bheadp = NULL;
1.66 lum 198: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.63 lum 199: if (bp == NULL)
200: panic("edinit");
201:
1.26 vincent 202: wp = new_window(bp);
1.21 vincent 203: if (wp == NULL)
1.66 lum 204: panic("edinit: Out of memory");
1.63 lum 205:
1.66 lum 206: curbp = bp; /* Current buffer. */
1.1 deraadt 207: wheadp = wp;
1.4 millert 208: curwp = wp;
1.5 millert 209: wp->w_wndp = NULL; /* Initialize window. */
1.54 kjell 210: wp->w_linep = wp->w_dotp = bp->b_headp;
1.38 db 211: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
1.61 kjell 212: wp->w_rflag = WFMODE | WFFULL; /* Full. */
1.1 deraadt 213: }
214:
215: /*
1.5 millert 216: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
217: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 218: */
1.4 millert 219: /* ARGSUSED */
1.5 millert 220: int
1.20 vincent 221: quit(int f, int n)
1.1 deraadt 222: {
1.5 millert 223: int s;
1.1 deraadt 224:
1.4 millert 225: if ((s = anycb(FALSE)) == ABORT)
1.38 db 226: return (ABORT);
1.68 ! lum 227: if (s == FIOERR)
! 228: return (FALSE);
1.1 deraadt 229: if (s == FALSE
1.41 kjell 230: || eyesno("Modified buffers exist; really exit") == TRUE) {
1.1 deraadt 231: vttidy();
1.62 lum 232: closetags();
1.1 deraadt 233: exit(GOOD);
234: }
1.38 db 235: return (TRUE);
1.1 deraadt 236: }
237:
238: /*
1.10 mickey 239: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 240: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 241: */
1.4 millert 242: /* ARGSUSED */
243: int
1.20 vincent 244: ctrlg(int f, int n)
1.1 deraadt 245: {
1.24 vincent 246: return (ABORT);
1.1 deraadt 247: }
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