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1.2 ! kristaps 1: /* $Id: main.c,v 1.1 2009/03/19 16:17:27 kristaps Exp $ */
1.1 kristaps 2: /*
3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the
7: * above copyright notice and this permission notice appear in all
8: * copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
11: * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
12: * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
13: * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
14: * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
15: * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
16: * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17: * PERFORMANCE OF THIS SOFTWARE.
18: */
19: #include <sys/stat.h>
20:
21: #include <assert.h>
22: #include <err.h>
23: #include <fcntl.h>
24: #include <stdio.h>
25: #include <stdlib.h>
26: #include <string.h>
27: #include <unistd.h>
28:
29: #include "mdoc.h"
30:
31: #define WARN_WALL 0x03 /* All-warnings mask. */
32: #define WARN_WCOMPAT (1 << 0) /* Compatibility warnings. */
33: #define WARN_WSYNTAX (1 << 1) /* Syntax warnings. */
34: #define WARN_WERR (1 << 2) /* Warnings->errors. */
35:
36: enum outt {
37: OUTT_ASCII,
38: OUTT_LATIN1,
39: OUTT_UTF8,
40: OUTT_TREE,
41: OUTT_LINT
42: };
43:
44: typedef int (*out_run)(void *, const struct mdoc *);
45: typedef void (*out_free)(void *);
46:
47: extern char *__progname;
48:
49: extern void *ascii_alloc(void);
50: extern void *latin1_alloc(void);
51: extern void *utf8_alloc(void);
52: extern int terminal_run(void *, const struct mdoc *);
53: extern int tree_run(void *, const struct mdoc *);
54: extern void terminal_free(void *);
55:
56: __dead static void version(void);
57: __dead static void usage(void);
58: static int foptions(int *, char *);
59: static int toptions(enum outt *, char *);
60: static int woptions(int *, char *);
61: static int merr(void *, int, int, const char *);
62: static int mwarn(void *, int, int,
63: enum mdoc_warn, const char *);
64: static int file(char **, size_t *, char **, size_t *,
65: const char *, struct mdoc *);
66: static int fdesc(char **, size_t *, char **, size_t *,
67: const char *, int, struct mdoc *);
68:
69:
70: int
71: main(int argc, char *argv[])
72: {
73: int c, rc, fflags, wflags;
74: struct mdoc_cb cb;
75: struct mdoc *mdoc;
76: char *buf, *line;
77: size_t bufsz, linesz;
78: void *outdata;
79: enum outt outtype;
80: out_run outrun;
81: out_free outfree;
82:
83: fflags = wflags = 0;
84: outtype = OUTT_ASCII;
85:
86: /* LINTED */
87: while (-1 != (c = getopt(argc, argv, "f:VW:T:")))
88: switch (c) {
89: case ('f'):
90: if ( ! foptions(&fflags, optarg))
91: return(0);
92: break;
93: case ('T'):
94: if ( ! toptions(&outtype, optarg))
95: return(0);
96: break;
97: case ('W'):
98: if ( ! woptions(&wflags, optarg))
99: return(0);
100: break;
101: case ('V'):
102: version();
103: /* NOTREACHED */
104: default:
105: usage();
106: /* NOTREACHED */
107: }
108:
109: argc -= optind;
110: argv += optind;
111:
112: /*
113: * Allocate the appropriate front-end. Note that utf8, ascii
114: * and latin1 all resolve to the terminal front-end with
115: * different encodings (see terminal.c). Not all frontends have
116: * cleanup or alloc routines.
117: */
118:
119: switch (outtype) {
120: case (OUTT_LATIN1):
121: outdata = latin1_alloc();
122: outrun = terminal_run;
123: outfree = terminal_free;
124: break;
125: case (OUTT_UTF8):
126: outdata = utf8_alloc();
127: outrun = terminal_run;
128: outfree = terminal_free;
129: break;
130: case (OUTT_TREE):
131: outdata = NULL;
132: outrun = tree_run;
133: outfree = NULL;
134: break;
135: case (OUTT_LINT):
136: outdata = NULL;
137: outrun = NULL;
138: outfree = NULL;
139: break;
140: default:
141: outdata = ascii_alloc();
142: outrun = terminal_run;
143: outfree = terminal_free;
144: break;
145: }
146:
147: /*
148: * All callbacks route into here, where we print them onto the
149: * screen. XXX - for now, no path for debugging messages.
150: */
151:
152: cb.mdoc_msg = NULL;
153: cb.mdoc_err = merr;
154: cb.mdoc_warn = mwarn;
155:
156: buf = line = NULL;
157: bufsz = linesz = 0;
158:
159: mdoc = mdoc_alloc(&wflags, fflags, &cb);
160:
161: while (*argv) {
162: if ( ! file(&line, &linesz, &buf, &bufsz, *argv, mdoc))
163: break;
164: if (outrun && ! (*outrun)(outdata, mdoc))
165: break;
166:
167: /* Reset the parser for another file. */
168: mdoc_reset(mdoc);
169: argv++;
170: }
171:
172: rc = NULL == *argv;
173:
174: if (buf)
175: free(buf);
176: if (line)
177: free(line);
178: if (outfree)
179: (*outfree)(outdata);
180:
181: mdoc_free(mdoc);
182:
183: return(rc ? EXIT_SUCCESS : EXIT_FAILURE);
184: }
185:
186:
187: __dead static void
188: version(void)
189: {
190:
191: (void)printf("%s %s\n", __progname, VERSION);
192: exit(0);
193: /* NOTREACHED */
194: }
195:
196:
197: __dead static void
198: usage(void)
199: {
200:
201: (void)fprintf(stderr, "usage: %s\n", __progname);
202: exit(1);
203: /* NOTREACHED */
204: }
205:
206:
207: static int
208: file(char **ln, size_t *lnsz, char **buf, size_t *bufsz,
209: const char *file, struct mdoc *mdoc)
210: {
211: int fd, c;
212:
213: if (-1 == (fd = open(file, O_RDONLY, 0))) {
214: warn("%s", file);
215: return(0);
216: }
217:
218: c = fdesc(ln, lnsz, buf, bufsz, file, fd, mdoc);
219:
220: if (-1 == close(fd))
221: warn("%s", file);
222:
223: return(c);
224: }
225:
226:
227: static int
228: fdesc(char **lnp, size_t *lnsz, char **bufp, size_t *bufsz,
229: const char *f, int fd, struct mdoc *mdoc)
230: {
231: size_t sz;
232: ssize_t ssz;
233: struct stat st;
234: int j, i, pos, lnn;
235: char *ln, *buf;
236:
237: buf = *bufp;
238: ln = *lnp;
239:
240: /*
241: * Two buffers: ln and buf. buf is the input buffer, optimised
242: * for each file's block size. ln is a line buffer. Both
243: * growable, hence passed in by ptr-ptr.
244: */
245:
246: if (-1 == fstat(fd, &st)) {
247: warnx("%s", f);
248: sz = BUFSIZ;
249: } else
250: sz = (unsigned)BUFSIZ > st.st_blksize ?
251: (size_t)BUFSIZ : st.st_blksize;
252:
253: if (sz > *bufsz) {
254: if (NULL == (buf = realloc(buf, sz)))
255: err(1, "realloc");
256: *bufp = buf;
257: *bufsz = sz;
258: }
259:
260: /*
261: * Fill buf with file blocksize and parse newlines into ln.
262: */
263:
264: for (lnn = 1, pos = 0; ; ) {
265: if (-1 == (ssz = read(fd, buf, sz))) {
266: warn("%s", f);
267: return(0);
268: } else if (0 == ssz)
269: break;
270:
271: for (i = 0; i < (int)ssz; i++) {
272: if (pos >= (int)*lnsz) {
273: *lnsz += 256; /* Step-size. */
274: ln = realloc(ln, *lnsz);
275: if (NULL == ln)
276: err(1, "realloc");
277: *lnp = ln;
278: }
279:
280: if ('\n' != buf[i]) {
281: ln[pos++] = buf[i];
282: continue;
283: }
284:
285: /* Check for CPP-escaped newline. */
286:
287: if (pos > 0 && '\\' == ln[pos - 1]) {
288: for (j = pos - 1; j >= 0; j--)
289: if ('\\' != ln[j])
290: break;
291:
292: if ( ! ((pos - j) % 2)) {
293: pos--;
294: lnn++;
295: continue;
296: }
297: }
298:
299: ln[pos] = 0;
300: if ( ! mdoc_parseln(mdoc, lnn, ln))
301: return(0);
302: lnn++;
303: pos = 0;
304: }
305: }
306:
307: return(mdoc_endparse(mdoc));
308: }
309:
310:
311: static int
312: toptions(enum outt *tflags, char *arg)
313: {
314:
315: if (0 == strcmp(arg, "ascii"))
316: *tflags = OUTT_ASCII;
317: else if (0 == strcmp(arg, "latin1"))
318: *tflags = OUTT_LATIN1;
319: else if (0 == strcmp(arg, "utf8"))
320: *tflags = OUTT_UTF8;
321: else if (0 == strcmp(arg, "lint"))
322: *tflags = OUTT_LINT;
323: else if (0 == strcmp(arg, "tree"))
324: *tflags = OUTT_TREE;
325: else {
326: warnx("bad argument: -T%s", arg);
327: return(0);
328: }
329:
330: return(1);
331: }
332:
333:
334: /*
335: * Parse out the options for [-fopt...] setting compiler options. These
336: * can be comma-delimited or called again.
337: */
338: static int
339: foptions(int *fflags, char *arg)
340: {
341: char *v;
342: char *toks[4];
343:
344: toks[0] = "ign-scope";
345: toks[1] = "ign-escape";
346: toks[2] = "ign-macro";
347: toks[3] = NULL;
348:
349: while (*arg)
350: switch (getsubopt(&arg, toks, &v)) {
351: case (0):
352: *fflags |= MDOC_IGN_SCOPE;
353: break;
354: case (1):
355: *fflags |= MDOC_IGN_ESCAPE;
356: break;
357: case (2):
358: *fflags |= MDOC_IGN_MACRO;
359: break;
360: default:
361: warnx("bad argument: -f%s", arg);
362: return(0);
363: }
364:
365: return(1);
366: }
367:
368:
369: /*
370: * Parse out the options for [-Werr...], which sets warning modes.
371: * These can be comma-delimited or called again.
372: */
373: static int
374: woptions(int *wflags, char *arg)
375: {
376: char *v;
377: char *toks[5];
378:
379: toks[0] = "all";
380: toks[1] = "compat";
381: toks[2] = "syntax";
382: toks[3] = "error";
383: toks[4] = NULL;
384:
385: while (*arg)
386: switch (getsubopt(&arg, toks, &v)) {
387: case (0):
388: *wflags |= WARN_WALL;
389: break;
390: case (1):
391: *wflags |= WARN_WCOMPAT;
392: break;
393: case (2):
394: *wflags |= WARN_WSYNTAX;
395: break;
396: case (3):
397: *wflags |= WARN_WERR;
398: break;
399: default:
400: warnx("bad argument: -W%s", arg);
401: return(0);
402: }
403:
404: return(1);
405: }
406:
407:
1.2 ! kristaps 408: /* ARGSUSED */
1.1 kristaps 409: static int
410: merr(void *arg, int line, int col, const char *msg)
411: {
412:
413: warnx("error: %s (line %d, column %d)", msg, line, col);
414: return(0);
415: }
416:
417:
418: static int
419: mwarn(void *arg, int line, int col,
420: enum mdoc_warn type, const char *msg)
421: {
422: int flags;
423: char *wtype;
424:
425: flags = *(int *)arg;
426: wtype = NULL;
427:
428: switch (type) {
429: case (WARN_COMPAT):
430: wtype = "compat";
431: if (flags & WARN_WCOMPAT)
432: break;
433: return(1);
434: case (WARN_SYNTAX):
435: wtype = "syntax";
436: if (flags & WARN_WSYNTAX)
437: break;
438: return(1);
439: }
440:
441: assert(wtype);
442: warnx("%s warning: %s (line %d, column %d)",
443: wtype, msg, line, col);
444:
445: if ( ! (flags & WARN_WERR))
446: return(1);
447:
448: warnx("%s: considering warnings as errors",
449: __progname);
450: return(0);
451: }
452:
453: