-/* $Id: mandoc.c,v 1.2 2009/07/12 09:48:00 kristaps Exp $ */
+/* $Id: mandoc.c,v 1.35 2010/09/04 20:18:53 kristaps Exp $ */
/*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include "mandoc.h"
#include "libmandoc.h"
+static int a2time(time_t *, const char *, const char *);
+
+
int
-mandoc_special(const char *p)
+mandoc_special(char *p)
{
- int c;
+ int len, i;
+ char term;
+ char *sv;
- if ('\\' != *p++)
- return(0);
+ len = 0;
+ term = '\0';
+ sv = p;
+
+ assert('\\' == *p);
+ p++;
- switch (*p) {
- case ('\\'):
+ switch (*p++) {
+#if 0
+ case ('Z'):
/* FALLTHROUGH */
- case ('\''):
+ case ('X'):
/* FALLTHROUGH */
- case ('`'):
+ case ('x'):
/* FALLTHROUGH */
- case ('q'):
+ case ('S'):
/* FALLTHROUGH */
- case ('-'):
+ case ('R'):
/* FALLTHROUGH */
- case ('~'):
+ case ('N'):
/* FALLTHROUGH */
- case ('^'):
+ case ('l'):
/* FALLTHROUGH */
- case ('%'):
+ case ('L'):
/* FALLTHROUGH */
- case ('0'):
+ case ('H'):
/* FALLTHROUGH */
- case (' '):
+ case ('h'):
/* FALLTHROUGH */
- case ('|'):
+ case ('D'):
/* FALLTHROUGH */
- case ('&'):
+ case ('C'):
/* FALLTHROUGH */
- case ('.'):
+ case ('b'):
/* FALLTHROUGH */
- case (':'):
+ case ('B'):
/* FALLTHROUGH */
- case ('e'):
- return(2);
- case ('f'):
- if (0 == *++p || ! isgraph((u_char)*p))
- return(0);
- return(3);
- case ('*'):
- if (0 == *++p || ! isgraph((u_char)*p))
+ case ('a'):
+ /* FALLTHROUGH */
+ case ('A'):
+ if (*p++ != '\'')
return(0);
- switch (*p) {
+ term = '\'';
+ break;
+#endif
+ case ('h'):
+ /* FALLTHROUGH */
+ case ('v'):
+ /* FALLTHROUGH */
+ case ('s'):
+ if (ASCII_HYPH == *p)
+ *p = '-';
+
+ i = 0;
+ if ('+' == *p || '-' == *p) {
+ p++;
+ i = 1;
+ }
+
+ switch (*p++) {
case ('('):
- if (0 == *++p || ! isgraph((u_char)*p))
+ len = 2;
+ break;
+ case ('['):
+ term = ']';
+ break;
+ case ('\''):
+ term = '\'';
+ break;
+ case ('0'):
+ i = 1;
+ /* FALLTHROUGH */
+ default:
+ len = 1;
+ p--;
+ break;
+ }
+
+ if (ASCII_HYPH == *p)
+ *p = '-';
+ if ('+' == *p || '-' == *p) {
+ if (i)
return(0);
- return(4);
+ p++;
+ }
+
+ /* Handle embedded numerical subexp or escape. */
+
+ if ('(' == *p) {
+ while (*p && ')' != *p)
+ if ('\\' == *p++) {
+ i = mandoc_special(--p);
+ if (0 == i)
+ return(0);
+ p += i;
+ }
+
+ if (')' == *p++)
+ break;
+
+ return(0);
+ } else if ('\\' == *p) {
+ if (0 == (i = mandoc_special(p)))
+ return(0);
+ p += i;
+ }
+
+ break;
+#if 0
+ case ('Y'):
+ /* FALLTHROUGH */
+ case ('V'):
+ /* FALLTHROUGH */
+ case ('$'):
+ /* FALLTHROUGH */
+ case ('n'):
+ /* FALLTHROUGH */
+#endif
+ case ('k'):
+ /* FALLTHROUGH */
+ case ('M'):
+ /* FALLTHROUGH */
+ case ('m'):
+ /* FALLTHROUGH */
+ case ('f'):
+ /* FALLTHROUGH */
+ case ('F'):
+ /* FALLTHROUGH */
+ case ('*'):
+ switch (*p++) {
+ case ('('):
+ len = 2;
+ break;
case ('['):
- for (c = 3, p++; *p && ']' != *p; p++, c++)
- if ( ! isgraph((u_char)*p))
- break;
- return(*p == ']' ? c : 0);
+ term = ']';
+ break;
default:
+ len = 1;
+ p--;
break;
}
- return(3);
+ break;
case ('('):
- if (0 == *++p || ! isgraph((u_char)*p))
- return(0);
- if (0 == *++p || ! isgraph((u_char)*p))
- return(0);
- return(4);
+ len = 2;
+ break;
case ('['):
+ term = ']';
break;
+ case ('z'):
+ len = 1;
+ if ('\\' == *p) {
+ if (0 == (i = mandoc_special(p)))
+ return(0);
+ p += i;
+ return(*p ? (int)(p - sv) : 0);
+ }
+ break;
+ case ('o'):
+ /* FALLTHROUGH */
+ case ('w'):
+ if ('\'' == *p++) {
+ term = '\'';
+ break;
+ }
+ /* FALLTHROUGH */
default:
- return(0);
+ len = 1;
+ p--;
+ break;
+ }
+
+ if (term) {
+ for ( ; *p && term != *p; p++)
+ if (ASCII_HYPH == *p)
+ *p = '-';
+ return(*p ? (int)(p - sv) : 0);
+ }
+
+ for (i = 0; *p && i < len; i++, p++)
+ if (ASCII_HYPH == *p)
+ *p = '-';
+ return(i == len ? (int)(p - sv) : 0);
+}
+
+
+void *
+mandoc_calloc(size_t num, size_t size)
+{
+ void *ptr;
+
+ ptr = calloc(num, size);
+ if (NULL == ptr) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
}
- for (c = 3, p++; *p && ']' != *p; p++, c++)
- if ( ! isgraph((u_char)*p))
+ return(ptr);
+}
+
+
+void *
+mandoc_malloc(size_t size)
+{
+ void *ptr;
+
+ ptr = malloc(size);
+ if (NULL == ptr) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
+
+ return(ptr);
+}
+
+
+void *
+mandoc_realloc(void *ptr, size_t size)
+{
+
+ ptr = realloc(ptr, size);
+ if (NULL == ptr) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
+
+ return(ptr);
+}
+
+
+char *
+mandoc_strdup(const char *ptr)
+{
+ char *p;
+
+ p = strdup(ptr);
+ if (NULL == p) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
+
+ return(p);
+}
+
+
+static int
+a2time(time_t *t, const char *fmt, const char *p)
+{
+ struct tm tm;
+ char *pp;
+
+ memset(&tm, 0, sizeof(struct tm));
+
+ pp = strptime(p, fmt, &tm);
+ if (NULL != pp && '\0' == *pp) {
+ *t = mktime(&tm);
+ return(1);
+ }
+
+ return(0);
+}
+
+
+/*
+ * Convert from a manual date string (see mdoc(7) and man(7)) into a
+ * date according to the stipulated date type.
+ */
+time_t
+mandoc_a2time(int flags, const char *p)
+{
+ time_t t;
+
+ if (MTIME_MDOCDATE & flags) {
+ if (0 == strcmp(p, "$" "Mdocdate$"))
+ return(time(NULL));
+ if (a2time(&t, "$" "Mdocdate: %b %d %Y $", p))
+ return(t);
+ }
+
+ if (MTIME_CANONICAL & flags || MTIME_REDUCED & flags)
+ if (a2time(&t, "%b %d, %Y", p))
+ return(t);
+
+ if (MTIME_ISO_8601 & flags)
+ if (a2time(&t, "%Y-%m-%d", p))
+ return(t);
+
+ if (MTIME_REDUCED & flags) {
+ if (a2time(&t, "%d, %Y", p))
+ return(t);
+ if (a2time(&t, "%Y", p))
+ return(t);
+ }
+
+ return(0);
+}
+
+
+int
+mandoc_eos(const char *p, size_t sz, int enclosed)
+{
+ const char *q;
+ int found;
+
+ if (0 == sz)
+ return(0);
+
+ /*
+ * End-of-sentence recognition must include situations where
+ * some symbols, such as `)', allow prior EOS punctuation to
+ * propogate outward.
+ */
+
+ found = 0;
+ for (q = p + (int)sz - 1; q >= p; q--) {
+ switch (*q) {
+ case ('\"'):
+ /* FALLTHROUGH */
+ case ('\''):
+ /* FALLTHROUGH */
+ case (']'):
+ /* FALLTHROUGH */
+ case (')'):
+ if (0 == found)
+ enclosed = 1;
break;
+ case ('.'):
+ /* FALLTHROUGH */
+ case ('!'):
+ /* FALLTHROUGH */
+ case ('?'):
+ found = 1;
+ break;
+ default:
+ return(found && (!enclosed || isalnum((unsigned char)*q)));
+ }
+ }
- return(*p == ']' ? c : 0);
+ return(found && !enclosed);
}
+
+int
+mandoc_hyph(const char *start, const char *c)
+{
+
+ /*
+ * Choose whether to break at a hyphenated character. We only
+ * do this if it's free-standing within a word.
+ */
+
+ /* Skip first/last character of buffer. */
+ if (c == start || '\0' == *(c + 1))
+ return(0);
+ /* Skip first/last character of word. */
+ if ('\t' == *(c + 1) || '\t' == *(c - 1))
+ return(0);
+ if (' ' == *(c + 1) || ' ' == *(c - 1))
+ return(0);
+ /* Skip double invocations. */
+ if ('-' == *(c + 1) || '-' == *(c - 1))
+ return(0);
+ /* Skip escapes. */
+ if ('\\' == *(c - 1))
+ return(0);
+
+ return(1);
+}
git.ckatri.com / mandoc.git / blobdiff