/* PSPP - computes sample statistics.
Copyright (C) 2006 Free Software Foundation, Inc.
- Written by John Darrington <john@darrington.wattle.id.au>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
#include <xalloc.h>
#include <assert.h>
#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
#include <iconv.h>
#include <errno.h>
#include "i18n.h"
#include <localcharset.h>
+#include "xstrndup.h"
static char *locale = 0;
static iconv_t convertor[n_CONV];
+
+/* A wrapper around iconv_open */
+static iconv_t
+create_iconv (const char* tocode, const char* fromcode)
+{
+ iconv_t conv = iconv_open (tocode, fromcode);
+
+ /* I don't think it's safe to translate this string or to use messaging
+ as the convertors have not yet been set up */
+ if ( (iconv_t) -1 == conv)
+ {
+ const int err = errno;
+ fprintf (stderr,
+ "Warning: cannot create a convertor for \"%s\" to \"%s\": %s\n",
+ fromcode, tocode, strerror (err));
+ }
+
+ return 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.
*/
char *
-recode_string(enum conv_id how, const char *text, int length)
+recode_string (enum conv_id how, const char *text, int length)
{
char *outbuf = 0;
size_t outbufferlength;
size_t result;
- char *ip ;
char *op ;
size_t inbytes = 0;
size_t outbytes ;
/* FIXME: Need to ensure that this char is valid in the target encoding */
const char fallbackchar = '?';
+ if ( text == NULL )
+ return NULL;
+
if ( length == -1 )
length = strlen(text);
- assert(how < n_CONV);
+ assert (how < n_CONV);
+
+ if (convertor[how] == (iconv_t) -1)
+ return xstrndup (text, length);
for ( outbufferlength = 1 ; outbufferlength != 0; outbufferlength <<= 1 )
if ( outbufferlength > length)
outbuf = xmalloc(outbufferlength);
op = outbuf;
- ip = (char *) text;
outbytes = outbufferlength;
inbytes = length;
do {
-
-
- result = iconv(convertor[how], &ip, &inbytes,
+ result = iconv (convertor[how], (ICONV_CONST char **) &text, &inbytes,
&op, &outbytes);
if ( -1 == result )
{
int the_error = errno;
- switch ( the_error)
+ switch (the_error)
{
case EILSEQ:
case EINVAL:
{
*op++ = fallbackchar;
outbytes--;
- ip++;
+ text++;
inbytes--;
break;
}
/* Fall through */
case E2BIG:
- free(outbuf);
+ free (outbuf);
outbufferlength <<= 1;
- outbuf = xmalloc(outbufferlength);
+ outbuf = xmalloc (outbufferlength);
op = outbuf;
- ip = (char *) text;
outbytes = outbufferlength;
inbytes = length;
break;
/* should never happen */
break;
}
-
}
-
} while ( -1 == result );
+ if (outbytes == 0 )
+ {
+ char *const oldaddr = outbuf;
+ outbuf = xrealloc (outbuf, outbufferlength + 1);
+
+ op += (outbuf - oldaddr) ;
+ }
+
*op = '\0';
-
return outbuf;
}
/* Returns the current PSPP locale */
const char *
-get_pspp_locale(void)
+get_pspp_locale (void)
{
- assert ( locale);
+ assert (locale);
return locale;
}
/* Set the PSPP locale */
void
-set_pspp_locale(const char *l)
+set_pspp_locale (const char *l)
{
char *current_locale;
const char *current_charset;
free(locale);
locale = strdup(l);
- current_locale = setlocale(LC_CTYPE, 0);
- current_charset = locale_charset();
- setlocale(LC_CTYPE, locale);
+ current_locale = setlocale (LC_CTYPE, 0);
+ current_charset = locale_charset ();
+ setlocale (LC_CTYPE, locale);
- charset = locale_charset();
- setlocale(LC_CTYPE, current_locale);
+ charset = locale_charset ();
+ setlocale (LC_CTYPE, current_locale);
- iconv_close(convertor[CONV_PSPP_TO_UTF8]);
- convertor[CONV_PSPP_TO_UTF8] = iconv_open("UTF-8", charset);
+ iconv_close (convertor[CONV_PSPP_TO_UTF8]);
+ convertor[CONV_PSPP_TO_UTF8] = create_iconv ("UTF-8", charset);
- iconv_close(convertor[CONV_SYSTEM_TO_PSPP]);
- convertor[CONV_SYSTEM_TO_PSPP] = iconv_open(charset, current_charset);
+ iconv_close (convertor[CONV_SYSTEM_TO_PSPP]);
+ convertor[CONV_SYSTEM_TO_PSPP] = create_iconv (charset, current_charset);
}
void
-i18n_init(void)
+i18n_init (void)
{
- assert ( ! locale) ;
- locale = strdup(setlocale(LC_CTYPE, NULL));
+ assert (!locale) ;
+ locale = strdup (setlocale (LC_CTYPE, NULL));
- setlocale(LC_CTYPE, locale);
- charset = locale_charset();
+ setlocale (LC_CTYPE, locale);
+ charset = locale_charset ();
- convertor[CONV_PSPP_TO_UTF8] = iconv_open("UTF-8", charset);
- convertor[CONV_SYSTEM_TO_PSPP] = iconv_open(charset, charset);
+ convertor[CONV_PSPP_TO_UTF8] = create_iconv ("UTF-8", charset);
+ convertor[CONV_SYSTEM_TO_PSPP] = create_iconv (charset, charset);
}
void
-i18n_done(void)
+i18n_done (void)
{
int i;
- free(locale);
+ free (locale);
locale = 0;
for(i = 0 ; i < n_CONV; ++i )
- iconv_close(convertor[i]);
+ {
+ if ( (iconv_t) -1 == convertor[i] )
+ continue;
+ iconv_close (convertor[i]);
+ }
}
+