Annotation of src/usr.bin/mg/main.c, Revision 1.41
1.41 ! kjell 1: /* $OpenBSD: main.c,v 1.40 2005/06/14 18:14:40 kjell 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"
1.5 millert 12:
1.1 deraadt 13: #ifndef NO_MACRO
1.38 db 14: #include "macro.h"
1.5 millert 15: #endif /* NO_MACRO */
1.1 deraadt 16:
1.24 vincent 17: #include <err.h>
18:
1.5 millert 19: int thisflag; /* flags, this command */
20: int lastflag; /* flags, last command */
21: int curgoal; /* goal column */
1.36 deraadt 22: int startrow; /* row to start */
1.5 millert 23: BUFFER *curbp; /* current buffer */
1.38 db 24: BUFFER *bheadp; /* BUFFER list head */
1.5 millert 25: MGWIN *curwp; /* current window */
1.8 art 26: MGWIN *wheadp; /* MGWIN listhead */
1.5 millert 27: char pat[NPAT]; /* pattern */
1.1 deraadt 28:
1.24 vincent 29: static void edinit(PF);
1.1 deraadt 30:
1.2 deraadt 31: int
1.19 vincent 32: main(int argc, char **argv)
1.1 deraadt 33: {
1.24 vincent 34: char *cp, *init_fcn_name = NULL;
1.38 db 35: PF init_fcn = NULL;
36: int o, i, nfiles, status;
37: int nobackups = 0;
1.24 vincent 38:
1.35 henning 39: while ((o = getopt(argc, argv, "nf:")) != -1)
1.24 vincent 40: switch (o) {
1.35 henning 41: case 'n':
42: nobackups = 1;
43: break;
1.24 vincent 44: case 'f':
45: if (init_fcn_name != NULL)
46: errx(1, "cannot specify more than one "
47: "initial function");
48: init_fcn_name = optarg;
49: break;
50: default:
1.37 jmc 51: errx(1, "usage: mg [options] [file ...]");
1.24 vincent 52: }
53: argc -= optind;
54: argv += optind;
1.1 deraadt 55:
1.12 art 56: maps_init(); /* Keymaps and modes. */
1.11 art 57: funmap_init(); /* Functions. */
1.19 vincent 58:
1.13 art 59: /*
60: * This is where we initialize standalone extensions that should
61: * be loaded dynamically sometime in the future.
62: */
63: {
64: extern void grep_init(void);
1.14 art 65: extern void theo_init(void);
1.13 art 66:
67: grep_init();
1.14 art 68: theo_init();
1.24 vincent 69: mail_init();
1.13 art 70: }
1.5 millert 71:
1.24 vincent 72: if (init_fcn_name &&
73: (init_fcn = name_function(init_fcn_name)) == NULL)
74: errx(1, "Unknown function `%s'", init_fcn_name);
75:
76: vtinit(); /* Virtual terminal. */
77: #ifndef NO_DIR
78: dirinit(); /* Get current directory. */
79: #endif /* !NO_DIR */
80: edinit(init_fcn); /* Buffers, windows. */
81: ttykeymapinit(); /* Symbols, bindings. */
82:
1.4 millert 83: /*
84: * doing update() before reading files causes the error messages from
85: * the file I/O show up on the screen. (and also an extra display of
86: * the mode line if there are files specified on the command line.)
1.1 deraadt 87: */
88: update();
1.5 millert 89:
90: #ifndef NO_STARTUP
91: /* user startup file */
1.8 art 92: if ((cp = startupfile(NULL)) != NULL)
1.7 art 93: (void)load(cp);
1.5 millert 94: #endif /* !NO_STARTUP */
1.35 henning 95:
96: if (nobackups)
97: makebkfile(FFARG, 0);
1.27 vincent 98:
99: for (nfiles = 0, i = 0; i < argc; i++) {
100: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.30 pvalchev 101: int lval;
102: const char *errstr;
1.23 deraadt 103:
1.32 vincent 104: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
1.33 vincent 105: if (argv[i][1] == '\0' || errstr != NULL)
1.23 deraadt 106: goto notnum;
1.30 pvalchev 107: startrow = lval;
1.24 vincent 108: } else {
1.23 deraadt 109: notnum:
1.27 vincent 110: cp = adjustname(argv[i]);
1.24 vincent 111: if (cp != NULL) {
1.38 db 112: if (nfiles == 1)
1.27 vincent 113: splitwind(0, 1);
1.38 db 114:
1.39 beck 115: if ((curbp = findbuffer(cp)) == NULL) {
116: vttidy();
117: errx(1, "Can't find current buffer!");
118: }
1.24 vincent 119: (void)showbuffer(curbp, curwp, 0);
1.38 db 120: if ((status = readin(cp)) != TRUE)
1.34 jfb 121: killbuffer(curbp);
1.38 db 122: else {
1.34 jfb 123: if (init_fcn_name)
124: init_fcn(0, 1);
125: nfiles++;
126: }
1.24 vincent 127: }
1.22 vincent 128: }
1.1 deraadt 129: }
1.29 vincent 130:
131: if (nfiles > 2)
132: listbuffers(0, 1);
1.5 millert 133:
134: /* fake last flags */
135: thisflag = 0;
1.4 millert 136: for (;;) {
1.1 deraadt 137: #ifndef NO_DPROMPT
1.4 millert 138: if (epresf == KPROMPT)
139: eerase();
1.5 millert 140: #endif /* !NO_DPROMPT */
1.17 deraadt 141: if (winch_flag) {
142: refresh(0, 0);
143: winch_flag = 0;
144: }
1.4 millert 145: update();
146: lastflag = thisflag;
147: thisflag = 0;
1.5 millert 148:
1.4 millert 149: switch (doin()) {
150: case TRUE:
151: break;
1.1 deraadt 152: case ABORT:
1.5 millert 153: ewprintf("Quit");
154: /* and fall through */
1.1 deraadt 155: case FALSE:
156: default:
1.4 millert 157: ttbeep();
1.1 deraadt 158: #ifndef NO_MACRO
1.4 millert 159: macrodef = FALSE;
1.5 millert 160: #endif /* !NO_MACRO */
1.4 millert 161: }
1.1 deraadt 162: }
163: }
164:
165: /*
166: * Initialize default buffer and window.
167: */
1.7 art 168: static void
1.24 vincent 169: edinit(PF init_fcn)
1.4 millert 170: {
1.5 millert 171: BUFFER *bp;
172: MGWIN *wp;
1.1 deraadt 173:
174: bheadp = NULL;
1.5 millert 175: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.26 vincent 176: wp = new_window(bp);
1.21 vincent 177: if (wp == NULL)
178: panic("Out of memory");
1.4 millert 179: if (bp == NULL || wp == NULL)
180: panic("edinit");
1.5 millert 181: curbp = bp; /* Current ones. */
1.1 deraadt 182: wheadp = wp;
1.4 millert 183: curwp = wp;
1.5 millert 184: wp->w_wndp = NULL; /* Initialize window. */
1.1 deraadt 185: wp->w_linep = wp->w_dotp = bp->b_linep;
1.38 db 186: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
187: wp->w_flag = WFMODE | WFHARD; /* Full. */
1.24 vincent 188:
189: if (init_fcn)
1.25 vincent 190: init_fcn(0, 1);
1.1 deraadt 191: }
192:
193: /*
1.5 millert 194: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
195: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 196: */
1.4 millert 197: /* ARGSUSED */
1.5 millert 198: int
1.20 vincent 199: quit(int f, int n)
1.1 deraadt 200: {
1.5 millert 201: int s;
1.1 deraadt 202:
1.4 millert 203: if ((s = anycb(FALSE)) == ABORT)
1.38 db 204: return (ABORT);
1.1 deraadt 205: if (s == FALSE
1.41 ! kjell 206: || eyesno("Modified buffers exist; really exit") == TRUE) {
1.1 deraadt 207: vttidy();
1.5 millert 208: #ifdef SYSCLEANUP
1.4 millert 209: SYSCLEANUP;
1.5 millert 210: #endif /* SYSCLEANUP */
1.1 deraadt 211: exit(GOOD);
212: }
1.38 db 213: return (TRUE);
1.1 deraadt 214: }
215:
216: /*
1.10 mickey 217: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 218: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 219: */
1.4 millert 220: /* ARGSUSED */
221: int
1.20 vincent 222: ctrlg(int f, int n)
1.1 deraadt 223: {
1.24 vincent 224: return (ABORT);
1.1 deraadt 225: }
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