Annotation of src/usr.bin/mg/main.c, Revision 1.30
1.30 ! pvalchev 1: /* $OpenBSD: main.c,v 1.29 2004/02/02 20:21:14 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 */
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;
1.27 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) {
1.30 ! pvalchev 92: int lval;
! 93: const char *errstr;
1.23 deraadt 94:
1.30 ! pvalchev 95: lval = strtonum(&argv[i][1], INT_MIN, INT_MAX, &errstr);
! 96: if (argv[i][1] == '\0' || *errstr != '\0')
1.23 deraadt 97: goto notnum;
1.30 ! pvalchev 98: startrow = lval;
1.24 vincent 99: } else {
1.23 deraadt 100: notnum:
1.27 vincent 101: cp = adjustname(argv[i]);
1.24 vincent 102: if (cp != NULL) {
1.29 vincent 103: if (nfiles == 1) {
1.27 vincent 104: splitwind(0, 1);
1.29 vincent 105: }
1.24 vincent 106: curbp = findbuffer(cp);
107: (void)showbuffer(curbp, curwp, 0);
108: (void)readin(cp);
109: if (init_fcn_name)
1.25 vincent 110: init_fcn(0, 1);
1.27 vincent 111: nfiles++;
1.24 vincent 112: }
1.22 vincent 113: }
1.1 deraadt 114: }
1.29 vincent 115:
116: if (nfiles > 2)
117: listbuffers(0, 1);
1.5 millert 118:
119: /* fake last flags */
120: thisflag = 0;
1.4 millert 121: for (;;) {
1.1 deraadt 122: #ifndef NO_DPROMPT
1.4 millert 123: if (epresf == KPROMPT)
124: eerase();
1.5 millert 125: #endif /* !NO_DPROMPT */
1.17 deraadt 126: if (winch_flag) {
127: refresh(0, 0);
128: winch_flag = 0;
129: }
1.4 millert 130: update();
131: lastflag = thisflag;
132: thisflag = 0;
1.5 millert 133:
1.4 millert 134: switch (doin()) {
135: case TRUE:
136: break;
1.1 deraadt 137: case ABORT:
1.5 millert 138: ewprintf("Quit");
139: /* and fall through */
1.1 deraadt 140: case FALSE:
141: default:
1.4 millert 142: ttbeep();
1.1 deraadt 143: #ifndef NO_MACRO
1.4 millert 144: macrodef = FALSE;
1.5 millert 145: #endif /* !NO_MACRO */
1.4 millert 146: }
1.1 deraadt 147: }
148: }
149:
150: /*
151: * Initialize default buffer and window.
152: */
1.7 art 153: static void
1.24 vincent 154: edinit(PF init_fcn)
1.4 millert 155: {
1.5 millert 156: BUFFER *bp;
157: MGWIN *wp;
1.1 deraadt 158:
159: bheadp = NULL;
1.5 millert 160: bp = bfind("*scratch*", TRUE); /* Text buffer. */
1.26 vincent 161: wp = new_window(bp);
1.21 vincent 162: if (wp == NULL)
163: panic("Out of memory");
1.4 millert 164: if (bp == NULL || wp == NULL)
165: panic("edinit");
1.5 millert 166: curbp = bp; /* Current ones. */
1.1 deraadt 167: wheadp = wp;
1.4 millert 168: curwp = wp;
1.5 millert 169: wp->w_wndp = NULL; /* Initialize window. */
1.1 deraadt 170: wp->w_linep = wp->w_dotp = bp->b_linep;
1.28 vincent 171: wp->w_ntrows = nrow - 2; /* 2 = mode, echo. */
172: wp->w_flag = WFMODE | WFHARD; /* Full. */
1.24 vincent 173:
174: if (init_fcn)
1.25 vincent 175: init_fcn(0, 1);
1.1 deraadt 176: }
177:
178: /*
1.5 millert 179: * Quit command. If an argument, always quit. Otherwise confirm if a buffer
180: * has been changed and not written out. Normally bound to "C-X C-C".
1.1 deraadt 181: */
1.4 millert 182: /* ARGSUSED */
1.5 millert 183: int
1.20 vincent 184: quit(int f, int n)
1.1 deraadt 185: {
1.5 millert 186: int s;
1.1 deraadt 187:
1.4 millert 188: if ((s = anycb(FALSE)) == ABORT)
189: return ABORT;
1.1 deraadt 190: if (s == FALSE
1.4 millert 191: || eyesno("Some modified buffers exist, really exit") == TRUE) {
1.1 deraadt 192: vttidy();
1.5 millert 193: #ifdef SYSCLEANUP
1.4 millert 194: SYSCLEANUP;
1.5 millert 195: #endif /* SYSCLEANUP */
1.1 deraadt 196: exit(GOOD);
197: }
198: return TRUE;
199: }
200:
201: /*
1.10 mickey 202: * User abort. Should be called by any input routine that sees a C-g to abort
1.5 millert 203: * whatever C-g is aborting these days. Currently does nothing.
1.1 deraadt 204: */
1.4 millert 205: /* ARGSUSED */
206: int
1.20 vincent 207: ctrlg(int f, int n)
1.1 deraadt 208: {
1.24 vincent 209: return (ABORT);
1.1 deraadt 210: }
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