Annotation of src/usr.bin/mg/main.c, Revision 1.36
1.36 ! deraadt 1: /* $OpenBSD: main.c,v 1.35 2005/03/10 16:47:33 henning Exp $ */
1.6 niklas 2:
1.1 deraadt 3: /*
1.5 millert 4: * Mainline.
1.1 deraadt 5: */
1.5 millert 6:
1.1 deraadt 7: #include "def.h"
1.12 art 8: #include "kbd.h"
1.11 art 9: #include "funmap.h"
1.5 millert 10:
1.1 deraadt 11: #ifndef NO_MACRO
12: #include "macro.h"
1.5 millert 13: #endif /* NO_MACRO */
1.1 deraadt 14:
1.24 vincent 15: #include <err.h>
16:
1.5 millert 17: int thisflag; /* flags, this command */
18: int lastflag; /* flags, last command */
19: int curgoal; /* goal column */
1.36 ! deraadt 20: int startrow; /* row to start */
1.5 millert 21: BUFFER *curbp; /* current buffer */
1.29 vincent 22: BUFFER *bheadp; /* BUFFER list head */
1.5 millert 23: MGWIN *curwp; /* current window */
1.8 art 24: MGWIN *wheadp; /* MGWIN listhead */
1.5 millert 25: char pat[NPAT]; /* pattern */
1.1 deraadt 26:
1.24 vincent 27: static void edinit(PF);
1.1 deraadt 28:
1.2 deraadt 29: int
1.19 vincent 30: main(int argc, char **argv)
1.1 deraadt 31: {
1.24 vincent 32: char *cp, *init_fcn_name = NULL;
33: PF init_fcn = NULL;
1.34 jfb 34: int o, i, nfiles, status;
1.35 henning 35: int nobackups = 0;
1.24 vincent 36:
1.35 henning 37: while ((o = getopt(argc, argv, "nf:")) != -1)
1.24 vincent 38: switch (o) {
1.35 henning 39: case 'n':
40: nobackups = 1;
41: break;
1.24 vincent 42: case 'f':
43: if (init_fcn_name != NULL)
44: errx(1, "cannot specify more than one "
45: "initial function");
46: init_fcn_name = optarg;
47: break;
48: default:
49: errx(1, "usage: mg [-f <mode>] [files...]");
50: }
51: argc -= optind;
52: argv += optind;
1.1 deraadt 53:
1.12 art 54: maps_init(); /* Keymaps and modes. */
1.11 art 55: funmap_init(); /* Functions. */
1.19 vincent 56:
1.13 art 57: /*
58: * This is where we initialize standalone extensions that should
59: * be loaded dynamically sometime in the future.
60: */
61: {
62: extern void grep_init(void);
1.14 art 63: extern void theo_init(void);
1.13 art 64:
65: grep_init();
1.14 art 66: theo_init();
1.24 vincent 67: mail_init();
1.13 art 68: }
1.5 millert 69:
1.24 vincent 70: if (init_fcn_name &&
71: (init_fcn = name_function(init_fcn_name)) == NULL)
72: errx(1, "Unknown function `%s'", init_fcn_name);
73:
74: vtinit(); /* Virtual terminal. */
75: #ifndef NO_DIR
76: dirinit(); /* Get current directory. */
77: #endif /* !NO_DIR */
78: edinit(init_fcn); /* Buffers, windows. */
79: ttykeymapinit(); /* Symbols, bindings. */
80:
1.4 millert 81: /*
82: * doing update() before reading files causes the error messages from
83: * the file I/O show up on the screen. (and also an extra display of
84: * the mode line if there are files specified on the command line.)
1.1 deraadt 85: */
86: update();
1.5 millert 87:
88: #ifndef NO_STARTUP
89: /* user startup file */
1.8 art 90: if ((cp = startupfile(NULL)) != NULL)
1.7 art 91: (void)load(cp);
1.5 millert 92: #endif /* !NO_STARTUP */
1.35 henning 93:
94: if (nobackups)
95: makebkfile(FFARG, 0);
1.27 vincent 96:
97: for (nfiles = 0, i = 0; i < argc; i++) {
98: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.30 pvalchev 99: int lval;
100: const char *errstr;
1.23 deraadt 101:
1.32 vincent 102: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
1.33 vincent 103: if (argv[i][1] == '\0' || errstr != NULL)
1.23 deraadt 104: goto notnum;
1.30 pvalchev 105: startrow = lval;
1.24 vincent 106: } else {
1.23 deraadt 107: notnum:
1.27 vincent 108: cp = adjustname(argv[i]);
1.24 vincent 109: if (cp != NULL) {
1.29 vincent 110: if (nfiles == 1) {
1.27 vincent 111: splitwind(0, 1);
1.29 vincent 112: }
1.24 vincent 113: curbp = findbuffer(cp);
114: (void)showbuffer(curbp, curwp, 0);
1.34 jfb 115: if ((status = readin(cp)) != TRUE) {
116: killbuffer(curbp);
117: } else {
118: if (init_fcn_name)
119: init_fcn(0, 1);
120: nfiles++;
121: }
1.24 vincent 122: }
1.22 vincent 123: }
1.1 deraadt 124: }
1.29 vincent 125:
126: if (nfiles > 2)
127: listbuffers(0, 1);
1.5 millert 128:
129: /* fake last flags */
130: thisflag = 0;
1.4 millert 131: for (;;) {
1.1 deraadt 132: #ifndef NO_DPROMPT
1.4 millert 133: if (epresf == KPROMPT)
134: eerase();
1.5 millert 135: #endif /* !NO_DPROMPT */
1.17 deraadt 136: if (winch_flag) {
137: refresh(0, 0);
138: winch_flag = 0;
139: }
1.4 millert 140: update();
141: lastflag = thisflag;
142: thisflag = 0;
1.5 millert 143:
1.4 millert 144: switch (doin()) {
145: case TRUE:
146: break;
1.1 deraadt 147: case ABORT:
1.5 millert 148: ewprintf("Quit");
149: /* and fall through */
1.1 deraadt 150: case FALSE:
151: default:
1.4 millert 152: ttbeep();
1.1 deraadt 153: #ifndef NO_MACRO
1.4 millert 154: macrodef = FALSE;
1.5 millert 155: #endif /* !NO_MACRO */
1.4 millert 156: }
1.1 deraadt 157: }
158: }
159:
160: /*
161: * Initialize default buffer and window.
162: */
1.7 art 163: static void
1.24 vincent 164: edinit(PF init_fcn)
1.4 millert 165: {
1.5 millert 166: BUFFER *bp;
167: MGWIN *wp;
1.1 deraadt 168:
169: bheadp = NULL;
1.5 millert 170: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.26 vincent 171: wp = new_window(bp);
1.21 vincent 172: if (wp == NULL)
173: panic("Out of memory");
1.4 millert 174: if (bp == NULL || wp == NULL)
175: panic("edinit");
1.5 millert 176: curbp = bp; /* Current ones. */
1.1 deraadt 177: wheadp = wp;
1.4 millert 178: curwp = wp;
1.5 millert 179: wp->w_wndp = NULL; /* Initialize window. */
1.1 deraadt 180: wp->w_linep = wp->w_dotp = bp->b_linep;
1.28 vincent 181: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
182: wp->w_flag = WFMODE | WFHARD; /* Full. */
1.24 vincent 183:
184: if (init_fcn)
1.25 vincent 185: init_fcn(0, 1);
1.1 deraadt 186: }
187:
188: /*
1.5 millert 189: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
190: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 191: */
1.4 millert 192: /* ARGSUSED */
1.5 millert 193: int
1.20 vincent 194: quit(int f, int n)
1.1 deraadt 195: {
1.5 millert 196: int s;
1.1 deraadt 197:
1.4 millert 198: if ((s = anycb(FALSE)) == ABORT)
199: return ABORT;
1.1 deraadt 200: if (s == FALSE
1.4 millert 201: || eyesno("Some modified buffers exist, really exit") == TRUE) {
1.1 deraadt 202: vttidy();
1.5 millert 203: #ifdef SYSCLEANUP
1.4 millert 204: SYSCLEANUP;
1.5 millert 205: #endif /* SYSCLEANUP */
1.1 deraadt 206: exit(GOOD);
207: }
208: return TRUE;
209: }
210:
211: /*
1.10 mickey 212: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 213: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 214: */
1.4 millert 215: /* ARGSUSED */
216: int
1.20 vincent 217: ctrlg(int f, int n)
1.1 deraadt 218: {
1.24 vincent 219: return (ABORT);
1.1 deraadt 220: }
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