+ gly = ESCAPE_SPECIAL;
+ lim = 1;
+ i--;
+ break;
+ }
+
+ assert(ESCAPE_ERROR != gly);
+
+ rstart = &cp[i];
+ if (start)
+ *start = rstart;
+
+ /*
+ * If a terminating block has been specified, we need to
+ * handle the case of recursion, which could have their
+ * own terminating blocks that mess up our parse. This, by the
+ * way, means that the "start" and "size" values will be
+ * effectively meaningless.
+ */
+
+ ssz = 0;
+ if (numeric && -1 == (ssz = numescape(&cp[i])))
+ return(ESCAPE_ERROR);
+
+ i += ssz;
+ rlim = -1;
+
+ /*
+ * We have a character terminator. Try to read up to that
+ * character. If we can't (i.e., we hit the nil), then return
+ * an error; if we can, calculate our length, read past the
+ * terminating character, and exit.
+ */
+
+ if ('\0' != term) {
+ *end = strchr(&cp[i], term);
+ if ('\0' == *end)
+ return(ESCAPE_ERROR);
+
+ rlim = *end - &cp[i];
+ if (sz)
+ *sz = rlim;
+ (*end)++;
+ goto out;
+ }
+
+ assert(lim > 0);
+
+ /*
+ * We have a numeric limit. If the string is shorter than that,
+ * stop and return an error. Else adjust our endpoint, length,
+ * and return the current glyph.
+ */
+
+ if ((size_t)lim > strlen(&cp[i]))
+ return(ESCAPE_ERROR);
+
+ rlim = lim;
+ if (sz)
+ *sz = rlim;
+
+ *end = &cp[i] + lim;
+
+out:
+ assert(rlim >= 0 && rstart);
+
+ /* Run post-processors. */
+
+ switch (gly) {
+ case (ESCAPE_FONT):
+ if (1 != rlim)
+ break;
+ switch (*rstart) {
+ case ('3'):
+ /* FALLTHROUGH */
+ case ('B'):
+ gly = ESCAPE_FONTBOLD;
+ break;
+ case ('2'):
+ /* FALLTHROUGH */
+ case ('I'):
+ gly = ESCAPE_FONTITALIC;
+ break;
+ case ('P'):
+ gly = ESCAPE_FONTPREV;
+ break;
+ case ('1'):
+ /* FALLTHROUGH */
+ case ('R'):
+ gly = ESCAPE_FONTROMAN;
+ break;
+ }
+ break;
+ case (ESCAPE_SPECIAL):
+ if (1 != rlim)
+ break;
+ if ('c' == *rstart)
+ gly = ESCAPE_NOSPACE;
+ break;
+ default:
+ break;
+ }
+
+ return(gly);
+}
+
+void *
+mandoc_calloc(size_t num, size_t size)
+{
+ void *ptr;
+
+ ptr = calloc(num, size);
+ if (NULL == ptr) {
+ perror(NULL);
+ exit((int)MANDOCLEVEL_SYSERR);
+ }
+
+ 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);
+}
+
+/*
+ * Parse a quoted or unquoted roff-style request or macro argument.
+ * Return a pointer to the parsed argument, which is either the original
+ * pointer or advanced by one byte in case the argument is quoted.
+ * Null-terminate the argument in place.
+ * Collapse pairs of quotes inside quoted arguments.
+ * Advance the argument pointer to the next argument,
+ * or to the null byte terminating the argument line.
+ */
+char *
+mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
+{
+ char *start, *cp;
+ int quoted, pairs, white;
+
+ /* Quoting can only start with a new word. */
+ start = *cpp;
+ quoted = 0;
+ if ('"' == *start) {
+ quoted = 1;
+ start++;
+ }
+
+ pairs = 0;
+ white = 0;
+ for (cp = start; '\0' != *cp; cp++) {
+ /* Move left after quoted quotes and escaped backslashes. */
+ if (pairs)
+ cp[-pairs] = cp[0];
+ if ('\\' == cp[0]) {
+ if ('\\' == cp[1]) {
+ /* Poor man's copy mode. */
+ pairs++;
+ cp++;
+ } else if (0 == quoted && ' ' == cp[1])
+ /* Skip escaped blanks. */
+ cp++;
+ } else if (0 == quoted) {
+ if (' ' == cp[0]) {
+ /* Unescaped blanks end unquoted args. */
+ white = 1;
+ break;
+ }
+ } else if ('"' == cp[0]) {
+ if ('"' == cp[1]) {
+ /* Quoted quotes collapse. */
+ pairs++;
+ cp++;
+ } else {
+ /* Unquoted quotes end quoted args. */
+ quoted = 2;
+ break;
+ }
+ }
+ }
+
+ /* Quoted argument without a closing quote. */
+ if (1 == quoted)
+ mandoc_msg(MANDOCERR_BADQUOTE, parse, ln, *pos, NULL);
+
+ /* Null-terminate this argument and move to the next one. */
+ if (pairs)
+ cp[-pairs] = '\0';
+ if ('\0' != *cp) {
+ *cp++ = '\0';
+ while (' ' == *cp)
+ cp++;
+ }
+ *pos += (int)(cp - start) + (quoted ? 1 : 0);
+ *cpp = cp;
+
+ if ('\0' == *cp && (white || ' ' == cp[-1]))
+ mandoc_msg(MANDOCERR_EOLNSPACE, parse, ln, *pos, NULL);
+
+ return(start);
+}
+
+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);
+}
+
+static char *
+time2a(time_t t)
+{
+ struct tm tm;
+ char *buf, *p;
+ size_t ssz;
+ int isz;
+
+ localtime_r(&t, &tm);
+
+ /*
+ * Reserve space:
+ * up to 9 characters for the month (September) + blank
+ * up to 2 characters for the day + comma + blank
+ * 4 characters for the year and a terminating '\0'
+ */
+ p = buf = mandoc_malloc(10 + 4 + 4 + 1);
+
+ if (0 == (ssz = strftime(p, 10 + 1, "%B ", &tm)))
+ goto fail;
+ p += (int)ssz;
+
+ if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm.tm_mday)))
+ goto fail;
+ p += isz;
+
+ if (0 == strftime(p, 4 + 1, "%Y", &tm))
+ goto fail;
+ return(buf);
+
+fail:
+ free(buf);
+ return(NULL);
+}
+
+char *
+mandoc_normdate(struct mparse *parse, char *in, int ln, int pos)
+{
+ char *out;
+ time_t t;
+
+ if (NULL == in || '\0' == *in ||
+ 0 == strcmp(in, "$" "Mdocdate$")) {
+ mandoc_msg(MANDOCERR_NODATE, parse, ln, pos, NULL);
+ time(&t);
git.ckatri.com / mandoc.git / blobdiff