Add back in a check that the leading `-' exists for arguments. This

[mandoc.git] / mandoc.c

diff --git a/mandoc.c b/mandoc.c
index 2c59d598cb84f0fcbbed7faf8ec310b790352f5e..465965a469c2b946a353e57c7afc9c85015696b2 100644 (file)
--- a/mandoc.c
+++ b/mandoc.c
@@ -1,4 +1,4 @@
-/*     $Id: mandoc.c,v 1.46 2011/04/09 15:35:30 kristaps Exp $ */
+/*     $Id: mandoc.c,v 1.53 2011/05/24 21:31:23 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>
@@ -95,15 +97,6 @@ numescape(const char *start)
        return(++i);
 }
 
-/*
- * Handle an escaped sequeence.  This should be called with any
- * string subsequent a `\'.  Pass a pointer to this substring as "end";
- * it will be set to the supremum of the parsed escape sequence.  If
- * this returns ESCAPE_ERROR, the string is bogus and should be thrown
- * away.  If not ESCAPE_ERROR or ESCAPE_IGNORE, "start" is set to the
- * first relevant character of the substring (font, glyph, whatever) of
- * length sz.  Both "start" and "sz" may be NULL.
- */
 enum mandoc_esc
 mandoc_escape(const char **end, const char **start, int *sz)
 {
@@ -132,6 +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'):
@@ -163,10 +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;
@@ -467,11 +464,11 @@ mandoc_getarg(struct mparse *parse, char **cpp, int ln, int *pos)
 
        /* Quoting can only start with a new word. */
        start = *cpp;
+       quoted = 0;
        if ('"' == *start) {
                quoted = 1;
                start++;
-       } else
-               quoted = 0;
+       } 
 
        pairs = 0;
        white = 0;
@@ -612,7 +609,7 @@ mandoc_eos(const char *p, size_t sz, int enclosed)
        /*
         * End-of-sentence recognition must include situations where
         * some symbols, such as `)', allow prior EOS punctuation to
-        * propogate outward.
+        * propagate outward.
         */
 
        found = 0;
@@ -695,3 +692,35 @@ 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_strntou(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 ((errno == ERANGE && 
+                       (v == LONG_MAX || v == LONG_MIN)) ||
+                       (v > INT_MAX || v < 0))
+               return(-1);
+
+       return((int)v);
+}
+