i18n: Lightly reformat comments to better resemble other files.

[pspp] / src / libpspp / i18n.c

diff --git a/src/libpspp/i18n.c b/src/libpspp/i18n.c
index 293276c6aa9416f4bc4579b6d5ae266745610418..eb082c5d94b4f9bc0f798f8f0bf0c17e095d8a81 100644 (file)
--- a/src/libpspp/i18n.c
+++ b/src/libpspp/i18n.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+   Copyright (C) 2006, 2009, 2010 Free Software Foundation, Inc.
 
    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
@@ -24,9 +24,11 @@
 #include <libintl.h>
 #include <iconv.h>
 #include <errno.h>
+#include <relocatable.h>
 #include "assertion.h"
 #include "hmapx.h"
 #include "hash-functions.h"
+#include "pool.h"
 
 #include "i18n.h"
 
@@ -40,9 +42,9 @@
 #endif
 
 struct converter
-  {
-    const char *tocode;
-    const char *fromcode;
+ {
+    char *tocode;
+    char *fromcode;
     iconv_t conv;
   };
 
@@ -56,8 +58,9 @@ create_iconv (const char* tocode, const char* fromcode)
   size_t hash;
   struct hmapx_node *node;
   struct converter *converter;
+  assert (fromcode);
 
-  hash = hsh_hash_string (tocode) ^ hsh_hash_string (fromcode);
+  hash = hash_string (tocode, hash_string (fromcode, 0));
   HMAPX_FOR_EACH_WITH_HASH (converter, node, hash, &map)
     if (!strcmp (tocode, converter->tocode)
         && !strcmp (fromcode, converter->fromcode))
@@ -68,28 +71,48 @@ create_iconv (const char* tocode, const char* fromcode)
   converter->fromcode = xstrdup (fromcode);
   converter->conv = iconv_open (tocode, fromcode);
   hmapx_insert (&map, converter, hash);
-  
+
   /* I don't think it's safe to translate this string or to use messaging
-     as the convertors have not yet been set up */
+     as the converters have not yet been set up */
   if ( (iconv_t) -1 == converter->conv && 0 != strcmp (tocode, fromcode))
     {
       const int err = errno;
       fprintf (stderr,
                "Warning: "
-               "cannot create a convertor for \"%s\" to \"%s\": %s\n",
+               "cannot create a converter for `%s' to `%s': %s\n",
                fromcode, tocode, strerror (err));
     }
 
   return converter->conv;
 }
 
-/* Return a string based on TEXT converted according to HOW.
-   If length is not -1, then it must be the number of bytes in TEXT.
-   The returned string must be freed when no longer required.
-*/
+
+/* Similar to recode_string_pool, but allocates the returned value on the heap
+   instead of in a pool.  It is the caller's responsibility to free the
+   returned value. */
 char *
 recode_string (const char *to, const char *from,
               const char *text, int length)
+{
+  return recode_string_pool (to, from, text, length, NULL);
+}
+
+
+/* Converts the string TEXT, which should be encoded in FROM-encoding, to a
+   dynamically allocated string in TO-encoding.  Any characters which cannot be
+   converted will be represented by '?'.
+
+   LENGTH should be the length of the string or -1, if null terminated.
+
+   The returned string will be allocated on POOL.
+
+   This function's behaviour differs from that of g_convert_with_fallback
+   provided by GLib.  The GLib function will fail (returns NULL) if any part of
+   the input string is not valid in the declared input encoding.  This function
+   however perseveres even in the presence of badly encoded input. */
+char *
+recode_string_pool (const char *to, const char *from,
+                    const char *text, int length, struct pool *pool)
 {
   char *outbuf = 0;
   size_t outbufferlength;
@@ -108,7 +131,6 @@ recode_string (const char *to, const char *from,
   if ( length == -1 )
      length = strlen(text);
 
-
   if (to == NULL)
     to = default_encoding;
 
@@ -119,7 +141,7 @@ recode_string (const char *to, const char *from,
     if ( outbufferlength > length)
       break;
 
-  outbuf = xmalloc(outbufferlength);
+  outbuf = pool_malloc (pool, outbufferlength);
   op = outbuf;
 
   outbytes = outbufferlength;
@@ -128,6 +150,9 @@ recode_string (const char *to, const char *from,
 
   conv = create_iconv (to, from);
 
+  if ( (iconv_t) -1 == conv )
+       return xstrdup (text);
+
   do {
     const char *ip = text;
     result = iconv (conv, (ICONV_CONST char **) &text, &inbytes,
@@ -151,9 +176,9 @@ recode_string (const char *to, const char *from,
              }
            /* Fall through */
          case E2BIG:
-           free (outbuf);
+           pool_free (pool, outbuf);
            outbufferlength <<= 1;
-           outbuf = xmalloc (outbufferlength);
+           outbuf = pool_malloc (pool, outbufferlength);
            op = outbuf;
            outbytes = outbufferlength;
            inbytes = length;
@@ -161,6 +186,8 @@ recode_string (const char *to, const char *from,
            break;
          default:
            /* should never happen */
+            fprintf (stderr, "Character conversion error: %s\n",
+                     strerror (the_error));
            NOT_REACHED ();
            break;
          }
@@ -170,7 +197,7 @@ recode_string (const char *to, const char *from,
   if (outbytes == 0 )
     {
       char *const oldaddr = outbuf;
-      outbuf = xrealloc (outbuf, outbufferlength + 1);
+      outbuf = pool_realloc (pool, outbuf, outbufferlength + 1);
 
       op += (outbuf - oldaddr) ;
     }
@@ -186,13 +213,13 @@ i18n_init (void)
 {
 #if ENABLE_NLS
   setlocale (LC_CTYPE, "");
-#if HAVE_LC_MESSAGES
+#ifdef LC_MESSAGES
   setlocale (LC_MESSAGES, "");
 #endif
 #if HAVE_LC_PAPER
   setlocale (LC_PAPER, "");
 #endif
-  bindtextdomain (PACKAGE, locale_dir);
+  bindtextdomain (PACKAGE, relocate(locale_dir));
   textdomain (PACKAGE);
 #endif /* ENABLE_NLS */
 
@@ -264,8 +291,11 @@ i18n_done (void)
 {
   struct hmapx_node *node;
   struct converter *cvtr;
+
   HMAPX_FOR_EACH (cvtr, node, &map)
     {
+      free (cvtr->tocode);
+      free (cvtr->fromcode);
       iconv_close (cvtr->conv);
       free (cvtr);
     }