Merge mac build fix

[disorder] / lib / charset.c

diff --git a/lib/charset.c b/lib/charset.c
index fbcf2753b011747e9cf1bf6554c7de1c4ffed227..0e2926968d9802d31ee685b83f620779afd1c365 100644 (file)
--- a/lib/charset.c
+++ b/lib/charset.c
@@ -1,29 +1,25 @@
 /*
  * This file is part of DisOrder.
- * Copyright (C) 2004, 2005 Richard Kettlewell
+ * Copyright (C) 2004, 2005, 2007, 2008 Richard Kettlewell
  *
- * This program is free software; you can redistribute it and/or modify
+ * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- * USA
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 /** @file lib/charset.c @brief Character set conversion */
 
-#include <config.h>
-#include "types.h"
+#include "common.h"
 
 #include <iconv.h>
-#include <string.h>
 #include <errno.h>
 #include <langinfo.h>
 
@@ -69,28 +65,47 @@ static void *convert(const char *from, const char *to,
   return buf;
 }
 
-/** @brief Convert from the local multibyte encoding to UTF-8 */
+/** @brief Convert from the local multibyte encoding to UTF-8
+ * @param mb String in current locale's multibyte encoding
+ * @return Same string in UTF-8
+ */
 char *mb2utf8(const char *mb) {
   return convert(nl_langinfo(CODESET), "UTF-8", mb, strlen(mb) + 1);
 }
 
-/** @brief Convert from UTF-8 to the local multibyte encoding */
+/** @brief Convert from UTF-8 to the local multibyte encoding
+ * @param utf8 String in UTF-8
+ * @return Same string in current locale's multibyte encoding
+ */
 char *utf82mb(const char *utf8) {
   return convert("UTF-8", nl_langinfo(CODESET), utf8, strlen(utf8) + 1);
 }
 
-/** @brief Convert from encoding @p from to UTF-8 */
+/** @brief Convert from encoding @p from to UTF-8
+ * @param from Source encoding
+ * @param any String in encoding @p from
+ * @return @p any converted to UTF-8
+ */
 char *any2utf8(const char *from, const char *any) {
   return convert(from, "UTF-8", any, strlen(any) + 1);
 }
 
-/** @brief Convert from encoding @p from to the local multibyte encoding */
+/** @brief Convert from encoding @p from to the local multibyte encoding
+ * @param from Source encoding
+ * @param any String in encoding @p from
+ * @return @p any converted to current locale's multibyte encoding
+ */
 char *any2mb(const char *from, const char *any) {
   if(from) return convert(from, nl_langinfo(CODESET), any, strlen(any) + 1);
   else return xstrdup(any);
 }
 
-/** @brief Convert from encoding @p from to encoding @p to */
+/** @brief Convert from encoding @p from to encoding @p to
+ * @param from Source encoding
+ * @param to Destination encoding
+ * @param any String in encoding @p from
+ * @return @p any converted to encoding @p to
+ */
 char *any2any(const char *from,
              const char *to,
              const char *any) {
@@ -115,20 +130,22 @@ const char *truncate_for_display(const char *s, long max) {
   uint32_t *s32;
   size_t l32, cut;
   utf32_iterator it;
+  long graphemes;
 
   /* Convert to UTF-32 for processing */
   if(!(s32 = utf8_to_utf32(s, strlen(s), &l32)))
     return 0;
   it = utf32_iterator_new(s32, l32);
   cut = l32;
-  while(max && utf32_iterator_where(it) < l32) {
+  graphemes = 0;                        /* # of graphemes left of it */
+  while(graphemes <= max && utf32_iterator_where(it) < l32) {
+    if(graphemes == max - 1)
+      cut = utf32_iterator_where(it);
     utf32_iterator_advance(it, 1);
     if(utf32_iterator_grapheme_boundary(it))
-      --max;
-    if(max == 1)
-      cut = utf32_iterator_where(it);
+      ++graphemes;
   }
-  if(max == 0) {                        /* we need to cut */
+  if(graphemes > max) {                 /* we need to cut */
     s32[cut] = 0x2026;                  /* HORIZONTAL ELLIPSIS */
     l32 = cut + 1;
     s = utf32_to_utf8(s32, l32, 0);