Make -man check for tabs correctly print the column.

[mandoc.git] / mandoc.c

diff --git a/mandoc.c b/mandoc.c
index c0ffa585b1db13e830cac6cbd73a1b8b24457525..807692ac927b964ed5d002fae0eaaeadf27a3869 100644 (file)
--- a/mandoc.c
+++ b/mandoc.c
@@ -1,4 +1,4 @@
-/*     $Id: mandoc.c,v 1.49 2011/04/30 10:18:24 kristaps Exp $ */
+/*     $Id: mandoc.c,v 1.58 2011/07/27 07:32:26 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
@@ -23,6 +23,8 @@
 
 #include <assert.h>
 #include <ctype.h>
+#include <errno.h>
+#include <limits.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -123,6 +125,14 @@ mandoc_escape(const char **end, const char **start, int *sz)
                break;
        case ('['):
                gly = ESCAPE_SPECIAL;
+               /*
+                * Unicode escapes are defined in groff as \[uXXXX] to
+                * \[u10FFFF], where the contained value must be a valid
+                * Unicode codepoint.  Here, however, only check whether
+                * it's not a zero-width escape.
+                */
+               if ('u' == cp[i] && ']' != cp[i + 1])
+                       gly = ESCAPE_UNICODE;
                term = ']';
                break;
        case ('C'):
@@ -154,10 +164,6 @@ mandoc_escape(const char **end, const char **start, int *sz)
                if (ESCAPE_ERROR == gly)
                        gly = ESCAPE_IGNORE;
                /* FALLTHROUGH */
-       case ('*'):
-               if (ESCAPE_ERROR == gly)
-                       gly = ESCAPE_PREDEF;
-               /* FALLTHROUGH */
        case ('f'):
                if (ESCAPE_ERROR == gly)
                        gly = ESCAPE_FONT;
@@ -426,6 +432,16 @@ mandoc_realloc(void *ptr, size_t size)
        return(ptr);
 }
 
+char *
+mandoc_strndup(const char *ptr, size_t sz)
+{
+       char            *p;
+
+       p = mandoc_malloc(sz + 1);
+       memcpy(p, ptr, sz);
+       p[(int)sz] = '\0';
+       return(p);
+}
 
 char *
 mandoc_strdup(const char *ptr)
@@ -526,7 +542,10 @@ a2time(time_t *t, const char *fmt, const char *p)
 
        memset(&tm, 0, sizeof(struct tm));
 
+       pp = NULL;
+#ifdef HAVE_STRPTIME
        pp = strptime(p, fmt, &tm);
+#endif
        if (NULL != pp && '\0' == *pp) {
                *t = mktime(&tm);
                return(1);
@@ -538,12 +557,12 @@ a2time(time_t *t, const char *fmt, const char *p)
 static char *
 time2a(time_t t)
 {
-       struct tm        tm;
+       struct tm       *tm;
        char            *buf, *p;
        size_t           ssz;
        int              isz;
 
-       localtime_r(&t, &tm);
+       tm = localtime(&t);
 
        /*
         * Reserve space:
@@ -553,15 +572,15 @@ time2a(time_t t)
         */
        p = buf = mandoc_malloc(10 + 4 + 4 + 1);
 
-       if (0 == (ssz = strftime(p, 10 + 1, "%B ", &tm)))
+       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)))
+       if (-1 == (isz = snprintf(p, 4 + 1, "%d, ", tm->tm_mday)))
                goto fail;
        p += isz;
 
-       if (0 == strftime(p, 4 + 1, "%Y", &tm))
+       if (0 == strftime(p, 4 + 1, "%Y", tm))
                goto fail;
        return(buf);
 
@@ -634,33 +653,6 @@ mandoc_eos(const char *p, size_t sz, int enclosed)
        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);
-}
-
 /*
  * Find out whether a line is a macro line or not.  If it is, adjust the
  * current position and return one; if it isn't, return zero and don't
@@ -686,3 +678,34 @@ mandoc_getcontrol(const char *cp, int *ppos)
        *ppos = pos;
        return(1);
 }
+
+/*
+ * Convert a string to a long that may not be <0.
+ * If the string is invalid, or is less than 0, return -1.
+ */
+int
+mandoc_strntoi(const char *p, size_t sz, int base)
+{
+       char             buf[32];
+       char            *ep;
+       long             v;
+
+       if (sz > 31)
+               return(-1);
+
+       memcpy(buf, p, sz);
+       buf[(int)sz] = '\0';
+
+       errno = 0;
+       v = strtol(buf, &ep, base);
+
+       if (buf[0] == '\0' || *ep != '\0')
+               return(-1);
+
+       if (v > INT_MAX)
+               v = INT_MAX;
+       if (v < INT_MIN)
+               v = INT_MIN;
+
+       return((int)v);
+}