Make sure that -Thtml doesn't break within literal lines. This is the

[mandoc.git] / mandoc.c

diff --git a/mandoc.c b/mandoc.c
index 8260a69cede688f9dd0ac3d63f1a06c16dc3b73a..4faa5a78fac2f81430a84ac9e868237fe4b250f8 100644 (file)
--- a/mandoc.c
+++ b/mandoc.c
@@ -1,21 +1,22 @@
-/*     $Id: mandoc.c,v 1.7 2009/11/02 06:22:45 kristaps Exp $ */
+/*     $Id: mandoc.c,v 1.36 2011/01/03 22:42:37 schwarze Exp $ */

 /*
 /*

- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>

  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *

- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES

  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR

  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

-#if defined(__linux__) || defined(__MINT__)
-# define _GNU_SOURCE /* strptime() */
+#ifdef HAVE_CONFIG_H
+#include "config.h"

 #endif
 
 #include <sys/types.h>
 #endif
 
 #include <sys/types.h>


@@ -27,90 +28,201 @@
 #include <string.h>
 #include <time.h>
 
 #include <string.h>
 #include <time.h>
 

+#include "mandoc.h"

 #include "libmandoc.h"
 
 #include "libmandoc.h"
 

-static int      a2time(time_t *, const char *, const char *);
+static int      a2time(time_t *, const char *, const char *);

 
 
 int
 
 
 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 */
                /* FALLTHROUGH */

-       case ('\''):
+       case ('X'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('`'):
+       case ('x'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('q'):
+       case ('S'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('-'):
+       case ('R'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('~'):
+       case ('N'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('^'):
+       case ('l'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('%'):
+       case ('L'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('0'):
+       case ('H'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case (' '):
+       case ('h'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('|'):
+       case ('D'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('&'):
+       case ('C'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('.'):
+       case ('b'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case (':'):
+       case ('B'):

                /* FALLTHROUGH */
                /* FALLTHROUGH */

-       case ('c'):
-               return(2);
-       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);
                        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 ('('):
                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);
+                       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);
                                return(0);

-                       return(4);
+                       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 ('['):
                case ('['):

-                       for (c = 3, p++; *p && ']' != *p; p++, c++)
-                               if ( ! isgraph((u_char)*p))
-                                       break;
-                       return(*p == ']' ? c : 0);
+                       term = ']';
+                       break;

                default:
                default:

+                       len = 1;
+                       p--;

                        break;
                }
                        break;
                }

-               return(3);
+               break;

        case ('('):
        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 ('['):
        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;
                break;

+       case ('o'):
+               /* FALLTHROUGH */
+       case ('w'):
+               if ('\'' == *p++) {
+                       term = '\'';
+                       break;
+               }
+               /* FALLTHROUGH */

        default:
        default:

-               return(0);
+               len = 1;
+               p--;
+               break;

        }
 
        }
 

-       for (c = 3, p++; *p && ']' != *p; p++, c++)
-               if ( ! isgraph((u_char)*p))
-                       break;
+       if (term) {
+               for ( ; *p && term != *p; p++)
+                       if (ASCII_HYPH == *p)
+                               *p = '-';
+               return(*p ? (int)(p - sv) : 0);
+       }

 
 

-       return(*p == ']' ? c : 0);
+       for (i = 0; *p && i < len; i++, p++)
+               if (ASCII_HYPH == *p)
+                       *p = '-';
+       return(i == len ? (int)(p - sv) : 0);

 }
 
 
 }
 
 


@@ -122,7 +234,7 @@ mandoc_calloc(size_t num, size_t size)
        ptr = calloc(num, size);
        if (NULL == ptr) {
                perror(NULL);
        ptr = calloc(num, size);
        if (NULL == ptr) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit((int)MANDOCLEVEL_SYSERR);

        }
 
        return(ptr);
        }
 
        return(ptr);


@@ -137,7 +249,7 @@ mandoc_malloc(size_t size)
        ptr = malloc(size);
        if (NULL == ptr) {
                perror(NULL);
        ptr = malloc(size);
        if (NULL == ptr) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit((int)MANDOCLEVEL_SYSERR);

        }
 
        return(ptr);
        }
 
        return(ptr);


@@ -151,7 +263,7 @@ mandoc_realloc(void *ptr, size_t size)
        ptr = realloc(ptr, size);
        if (NULL == ptr) {
                perror(NULL);
        ptr = realloc(ptr, size);
        if (NULL == ptr) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit((int)MANDOCLEVEL_SYSERR);

        }
 
        return(ptr);
        }
 
        return(ptr);


@@ -166,12 +278,89 @@ mandoc_strdup(const char *ptr)
        p = strdup(ptr);
        if (NULL == p) {
                perror(NULL);
        p = strdup(ptr);
        if (NULL == p) {
                perror(NULL);

-               exit(EXIT_FAILURE);
+               exit((int)MANDOCLEVEL_SYSERR);

        }
 
        return(p);
 }
 
        }
 
        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(char **cpp, mandocmsg msg, void *data, int ln, int *pos)
+{
+       char     *start, *cp;
+       int       quoted, pairs, white;
+
+       /* Quoting can only start with a new word. */
+       start = *cpp;
+       if ('"' == *start) {
+               quoted = 1;
+               start++;
+       } else
+               quoted = 0;
+
+       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 && msg)
+               (*msg)(MANDOCERR_BADQUOTE, data, 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 += (cp - start) + (quoted ? 1 : 0);
+       *cpp = cp;
+
+       if ('\0' == *cp && msg && (white || ' ' == cp[-1]))
+               (*msg)(MANDOCERR_EOLNSPACE, data, ln, *pos, NULL);
+
+       return(start);
+}
+

 
 static int
 a2time(time_t *t, const char *fmt, const char *p)
 
 static int
 a2time(time_t *t, const char *fmt, const char *p)


@@ -225,3 +414,74 @@ mandoc_a2time(int flags, const char *p)
        return(0);
 }
 
        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(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);
+}