Annotation of src/usr.bin/mg/main.c, Revision 1.28
1.28 ! vincent 1: /* $OpenBSD: main.c,v 1.27 2003/12/04 01:52:01 vincent 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 */
1.23 deraadt 20: int startrow; /* row to start */
1.5 millert 21: BUFFER *curbp; /* current buffer */
22: BUFFER *bheadp; /* BUFFER listhead */
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;
1.27 vincent 34: int o, i, nfiles;
1.24 vincent 35:
36: while ((o = getopt(argc, argv, "f:")) != -1)
37: switch (o) {
38: case 'f':
39: if (init_fcn_name != NULL)
40: errx(1, "cannot specify more than one "
41: "initial function");
42: init_fcn_name = optarg;
43: break;
44: default:
45: errx(1, "usage: mg [-f <mode>] [files...]");
46: }
47: argc -= optind;
48: argv += optind;
1.1 deraadt 49:
1.12 art 50: maps_init(); /* Keymaps and modes. */
1.11 art 51: funmap_init(); /* Functions. */
1.19 vincent 52:
1.13 art 53: /*
54: * This is where we initialize standalone extensions that should
55: * be loaded dynamically sometime in the future.
56: */
57: {
58: extern void grep_init(void);
1.14 art 59: extern void theo_init(void);
1.13 art 60:
61: grep_init();
1.14 art 62: theo_init();
1.24 vincent 63: mail_init();
1.13 art 64: }
1.5 millert 65:
1.24 vincent 66: if (init_fcn_name &&
67: (init_fcn = name_function(init_fcn_name)) == NULL)
68: errx(1, "Unknown function `%s'", init_fcn_name);
69:
70: vtinit(); /* Virtual terminal. */
71: #ifndef NO_DIR
72: dirinit(); /* Get current directory. */
73: #endif /* !NO_DIR */
74: edinit(init_fcn); /* Buffers, windows. */
75: ttykeymapinit(); /* Symbols, bindings. */
76:
1.4 millert 77: /*
78: * doing update() before reading files causes the error messages from
79: * the file I/O show up on the screen. (and also an extra display of
80: * the mode line if there are files specified on the command line.)
1.1 deraadt 81: */
82: update();
1.5 millert 83:
84: #ifndef NO_STARTUP
85: /* user startup file */
1.8 art 86: if ((cp = startupfile(NULL)) != NULL)
1.7 art 87: (void)load(cp);
1.5 millert 88: #endif /* !NO_STARTUP */
1.27 vincent 89:
90: for (nfiles = 0, i = 0; i < argc; i++) {
91: if (argv[i][0] == '+' && strlen(argv[i]) >= 2) {
1.23 deraadt 92: long lval;
93: char *ep;
94:
95: errno = 0;
1.27 vincent 96: lval = strtoul(&argv[i][1], &ep, 10);
97: if (argv[i][1] == '\0' || *ep != '\0')
1.23 deraadt 98: goto notnum;
99: if ((errno == ERANGE &&
100: (lval == LONG_MAX || lval == LONG_MIN)) ||
101: (lval > INT_MAX || lval < INT_MIN))
102: goto notnum;
103: startrow = (int)lval;
1.24 vincent 104: } else {
1.23 deraadt 105: notnum:
1.27 vincent 106: cp = adjustname(argv[i]);
1.24 vincent 107: if (cp != NULL) {
1.27 vincent 108: if (nfiles > 0 && nfiles < 3)
109: splitwind(0, 1);
1.24 vincent 110: curbp = findbuffer(cp);
111: (void)showbuffer(curbp, curwp, 0);
112: (void)readin(cp);
113: if (init_fcn_name)
1.25 vincent 114: init_fcn(0, 1);
1.27 vincent 115: nfiles++;
1.24 vincent 116: }
1.22 vincent 117: }
1.1 deraadt 118: }
1.5 millert 119:
120: /* fake last flags */
121: thisflag = 0;
1.4 millert 122: for (;;) {
1.1 deraadt 123: #ifndef NO_DPROMPT
1.4 millert 124: if (epresf == KPROMPT)
125: eerase();
1.5 millert 126: #endif /* !NO_DPROMPT */
1.17 deraadt 127: if (winch_flag) {
128: refresh(0, 0);
129: winch_flag = 0;
130: }
1.4 millert 131: update();
132: lastflag = thisflag;
133: thisflag = 0;
1.5 millert 134:
1.4 millert 135: switch (doin()) {
136: case TRUE:
137: break;
1.1 deraadt 138: case ABORT:
1.5 millert 139: ewprintf("Quit");
140: /* and fall through */
1.1 deraadt 141: case FALSE:
142: default:
1.4 millert 143: ttbeep();
1.1 deraadt 144: #ifndef NO_MACRO
1.4 millert 145: macrodef = FALSE;
1.5 millert 146: #endif /* !NO_MACRO */
1.4 millert 147: }
1.1 deraadt 148: }
149: }
150:
151: /*
152: * Initialize default buffer and window.
153: */
1.7 art 154: static void
1.24 vincent 155: edinit(PF init_fcn)
1.4 millert 156: {
1.5 millert 157: BUFFER *bp;
158: MGWIN *wp;
1.1 deraadt 159:
160: bheadp = NULL;
1.5 millert 161: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.26 vincent 162: wp = new_window(bp);
1.21 vincent 163: if (wp == NULL)
164: panic("Out of memory");
1.4 millert 165: if (bp == NULL || wp == NULL)
166: panic("edinit");
1.5 millert 167: curbp = bp; /* Current ones. */
1.1 deraadt 168: wheadp = wp;
1.4 millert 169: curwp = wp;
1.5 millert 170: wp->w_wndp = NULL; /* Initialize window. */
1.1 deraadt 171: wp->w_linep = wp->w_dotp = bp->b_linep;
1.28 ! vincent 172: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
! 173: wp->w_flag = WFMODE | WFHARD; /* Full. */
1.24 vincent 174:
175: if (init_fcn)
1.25 vincent 176: init_fcn(0, 1);
1.1 deraadt 177: }
178:
179: /*
1.5 millert 180: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
181: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 182: */
1.4 millert 183: /* ARGSUSED */
1.5 millert 184: int
1.20 vincent 185: quit(int f, int n)
1.1 deraadt 186: {
1.5 millert 187: int s;
1.1 deraadt 188:
1.4 millert 189: if ((s = anycb(FALSE)) == ABORT)
190: return ABORT;
1.1 deraadt 191: if (s == FALSE
1.4 millert 192: || eyesno("Some modified buffers exist, really exit") == TRUE) {
1.1 deraadt 193: vttidy();
1.5 millert 194: #ifdef SYSCLEANUP
1.4 millert 195: SYSCLEANUP;
1.5 millert 196: #endif /* SYSCLEANUP */
1.1 deraadt 197: exit(GOOD);
198: }
199: return TRUE;
200: }
201:
202: /*
1.10 mickey 203: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 204: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 205: */
1.4 millert 206: /* ARGSUSED */
207: int
1.20 vincent 208: ctrlg(int f, int n)
1.1 deraadt 209: {
1.24 vincent 210: return (ABORT);
1.1 deraadt 211: }
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