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author | JP Rosevear <jpr@src.gnome.org> | 2005-01-11 08:00:07 +0800 |
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committer | JP Rosevear <jpr@src.gnome.org> | 2005-01-11 08:00:07 +0800 |
commit | fba011bf008443ee5130f1426aa65e11245cd84a (patch) | |
tree | 91793af1cfb21ec9bfea5579abb65ea6f73223b2 /camel/camel-iconv.c | |
parent | c60c4bf7c4590b850d589d79ac44d057323a429f (diff) | |
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Kill dead files
svn path=/trunk/; revision=28342
Diffstat (limited to 'camel/camel-iconv.c')
-rw-r--r-- | camel/camel-iconv.c | 646 |
1 files changed, 0 insertions, 646 deletions
diff --git a/camel/camel-iconv.c b/camel/camel-iconv.c deleted file mode 100644 index 0c4493bd8a..0000000000 --- a/camel/camel-iconv.c +++ /dev/null @@ -1,646 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * Authors: Jeffrey Stedfast <fejj@ximian.com> - * Michael Zucchi <notzed@ximian.com> - * - * Copyright 2003 Ximian, Inc. (www.ximian.com) - * - * 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 - * (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. - * - * 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 Street #330, Boston, MA 02111-1307, USA. - * - */ - - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <glib.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -#include <locale.h> - -#ifdef HAVE_CODESET -#include <langinfo.h> -#endif - -#include "libedataserver/e-memory.h" -#include "camel-charset-map.h" -#include "string-utils.h" -#include "camel-iconv.h" - -#define d(x) - -#ifdef G_THREADS_ENABLED -static GStaticMutex lock = G_STATIC_MUTEX_INIT; -#define LOCK() g_static_mutex_lock (&lock) -#define UNLOCK() g_static_mutex_unlock (&lock) -#else -#define LOCK() -#define UNLOCK() -#endif - - -typedef struct _EDListNode { - struct _EDListNode *next; - struct _EDListNode *prev; -} EDListNode; - -typedef struct _EDList { - struct _EDListNode *head; - struct _EDListNode *tail; - struct _EDListNode *tailpred; -} EDList; - -#define E_DLIST_INITIALISER(l) { (EDListNode *)&l.tail, 0, (EDListNode *)&l.head } - -struct _iconv_cache_node { - struct _iconv_cache_node *next; - struct _iconv_cache_node *prev; - - struct _iconv_cache *parent; - - int busy; - iconv_t cd; -}; - -struct _iconv_cache { - struct _iconv_cache *next; - struct _iconv_cache *prev; - - char *conv; - - EDList open; /* stores iconv_cache_nodes, busy ones up front */ -}; - -#define CAMEL_ICONV_CACHE_SIZE (16) - -static EDList iconv_cache_list; -static GHashTable *iconv_cache; -static GHashTable *iconv_cache_open; -static unsigned int iconv_cache_size = 0; - -static GHashTable *iconv_charsets = NULL; -static char *locale_charset = NULL; -static char *locale_lang = NULL; - -struct { - char *charset; - char *iconv_name; -} known_iconv_charsets[] = { -#if 0 - /* charset name, iconv-friendly charset name */ - { "iso-8859-1", "iso-8859-1" }, - { "iso8859-1", "iso-8859-1" }, - /* the above mostly serves as an example for iso-style charsets, - but we have code that will populate the iso-*'s if/when they - show up in e_iconv_charset_name() so I'm - not going to bother putting them all in here... */ - { "windows-cp1251", "cp1251" }, - { "windows-1251", "cp1251" }, - { "cp1251", "cp1251" }, - /* the above mostly serves as an example for windows-style - charsets, but we have code that will parse and convert them - to their cp#### equivalents if/when they show up in - e_iconv_charset_name() so I'm not going to bother - putting them all in here either... */ -#endif - /* charset name (lowercase!), iconv-friendly name (sometimes case sensitive) */ - { "utf-8", "UTF-8" }, - - /* 10646 is a special case, its usually UCS-2 big endian */ - /* This might need some checking but should be ok for solaris/linux */ - { "iso-10646-1", "UCS-2BE" }, - { "iso_10646-1", "UCS-2BE" }, - { "iso10646-1", "UCS-2BE" }, - { "iso-10646", "UCS-2BE" }, - { "iso_10646", "UCS-2BE" }, - { "iso10646", "UCS-2BE" }, - - { "ks_c_5601-1987", "EUC-KR" }, - - /* FIXME: Japanese/Korean/Chinese stuff needs checking */ - { "euckr-0", "EUC-KR" }, - { "5601", "EUC-KR" }, - { "zh_TW-euc", "EUC-TW" }, - { "zh_CN.euc", "gb2312" }, - { "zh_TW-big5", "BIG5" }, - { "big5-0", "BIG5" }, - { "big5.eten-0", "BIG5" }, - { "big5hkscs-0", "BIG5HKSCS" }, - { "gb2312-0", "gb2312" }, - { "gb2312.1980-0", "gb2312" }, - { "gb-2312", "gb2312" }, - { "gb18030-0", "gb18030" }, - { "gbk-0", "GBK" }, - - { "eucjp-0", "eucJP" }, - { "ujis-0", "ujis" }, - { "jisx0208.1983-0","SJIS" }, - { "jisx0212.1990-0","SJIS" }, - { "pck", "SJIS" }, - { NULL, NULL } -}; - - - -/* Another copy of this trivial list implementation - Why? This stuff gets called a lot (potentially), should run fast, - and g_list's are f@@#$ed up to make this a hassle */ -static void -e_dlist_init (EDList *v) -{ - v->head = (EDListNode *) &v->tail; - v->tail = 0; - v->tailpred = (EDListNode *) &v->head; -} - -static EDListNode * -e_dlist_addhead (EDList *l, EDListNode *n) -{ - n->next = l->head; - n->prev = (EDListNode *) &l->head; - l->head->prev = n; - l->head = n; - return n; -} - -static EDListNode * -e_dlist_addtail (EDList *l, EDListNode *n) -{ - n->next = (EDListNode *) &l->tail; - n->prev = l->tailpred; - l->tailpred->next = n; - l->tailpred = n; - return n; -} - -static EDListNode * -e_dlist_remove (EDListNode *n) -{ - n->next->prev = n->prev; - n->prev->next = n->next; - return n; -} - - -static void -locale_parse_lang (const char *locale) -{ - char *codeset, *lang; - - if ((codeset = strchr (locale, '.'))) - lang = g_strndup (locale, codeset - locale); - else - lang = g_strdup (locale); - - /* validate the language */ - if (strlen (lang) >= 2) { - if (lang[2] == '-' || lang[2] == '_') { - /* canonicalise the lang */ - camel_strdown (lang); - - /* validate the country code */ - if (strlen (lang + 3) > 2) { - /* invalid country code */ - lang[2] = '\0'; - } else { - lang[2] = '-'; - e_strup (lang + 3); - } - } else if (lang[2] != '\0') { - /* invalid language */ - g_free (lang); - lang = NULL; - } - - locale_lang = lang; - } else { - /* invalid language */ - locale_lang = NULL; - g_free (lang); - } -} - - -/** - * camel_iconv_init: - * - * Initialize Camel's iconv cache. This *MUST* be called before any - * camel-iconv interfaces will work correctly. - **/ -static void -camel_iconv_init (int keep) -{ - char *from, *to, *locale; - int i; - - LOCK (); - - if (iconv_charsets != NULL) { - if (!keep) - UNLOCK (); - return; - } - - iconv_charsets = g_hash_table_new (g_str_hash, g_str_equal); - - for (i = 0; known_iconv_charsets[i].charset != NULL; i++) { - from = g_strdup (known_iconv_charsets[i].charset); - to = g_strdup (known_iconv_charsets[i].iconv_name); - camel_strdown (from); - g_hash_table_insert (iconv_charsets, from, to); - } - - e_dlist_init (&iconv_cache_list); - iconv_cache = g_hash_table_new (g_str_hash, g_str_equal); - iconv_cache_open = g_hash_table_new (NULL, NULL); - - locale = setlocale (LC_ALL, NULL); - - if (!locale || !strcmp (locale, "C") || !strcmp (locale, "POSIX")) { - /* The locale "C" or "POSIX" is a portable locale; its - * LC_CTYPE part corresponds to the 7-bit ASCII character - * set. - */ - - locale_charset = NULL; - locale_lang = NULL; - } else { -#ifdef HAVE_CODESET - locale_charset = g_strdup (nl_langinfo (CODESET)); - camel_strdown (locale_charset); -#else - /* A locale name is typically of the form language[_terri- - * tory][.codeset][@modifier], where language is an ISO 639 - * language code, territory is an ISO 3166 country code, and - * codeset is a character set or encoding identifier like - * ISO-8859-1 or UTF-8. - */ - char *codeset, *p; - - codeset = strchr (locale, '.'); - if (codeset) { - codeset++; - - /* ; is a hack for debian systems and / is a hack for Solaris systems */ - for (p = codeset; *p && !strchr ("@;/", *p); p++); - locale_charset = g_strndup (codeset, p - codeset); - camel_strdown (locale_charset); - } else { - /* charset unknown */ - locale_charset = NULL; - } -#endif - - /* parse the locale lang */ - locale_parse_lang (locale); - } - - if (!keep) - UNLOCK (); -} - - -/** - * camel_iconv_charset_name: - * @charset: charset name - * - * Maps charset names to the names that iconv_open() is more - * likely able to handle. - * - * Returns an iconv-friendly name for @charset. - **/ -const char * -camel_iconv_charset_name (const char *charset) -{ - char *name, *iname, *tmp; - - if (charset == NULL) - return NULL; - - name = g_alloca (strlen (charset) + 1); - strcpy (name, charset); - camel_strdown (name); - - camel_iconv_init (TRUE); - if ((iname = g_hash_table_lookup (iconv_charsets, name)) != NULL) { - UNLOCK (); - return iname; - } - - /* Unknown, try canonicalise some basic charset types to something that should work */ - if (strncmp (name, "iso", 3) == 0) { - /* Convert iso-####-# or iso####-# or iso_####-# to iso-####-# or iso####-# */ - int iso, codepage; - char *p; - - tmp = name + 3; - if (*tmp == '-' || *tmp == '_') - tmp++; - - iso = strtoul (tmp, &p, 10); - - if (iso == 10646) { - /* they all become ICONV_10646 */ - iname = g_strdup (ICONV_10646); - } else { - tmp = p; - if (*tmp == '-' || *tmp == '_') - tmp++; - - codepage = strtoul (tmp, &p, 10); - - if (p > tmp) { - /* codepage is numeric */ -#ifdef __aix__ - if (codepage == 13) - iname = g_strdup ("IBM-921"); - else -#endif /* __aix__ */ - iname = g_strdup_printf (ICONV_ISO_D_FORMAT, iso, codepage); - } else { - /* codepage is a string - probably iso-2022-jp or something */ - iname = g_strdup_printf (ICONV_ISO_S_FORMAT, iso, p); - } - } - } else if (strncmp (name, "windows-", 8) == 0) { - /* Convert windows-#### or windows-cp#### to cp#### */ - tmp = name + 8; - if (!strncmp (tmp, "cp", 2)) - tmp += 2; - iname = g_strdup_printf ("CP%s", tmp); - } else if (strncmp (name, "microsoft-", 10) == 0) { - /* Convert microsoft-#### or microsoft-cp#### to cp#### */ - tmp = name + 10; - if (!strncmp (tmp, "cp", 2)) - tmp += 2; - iname = g_strdup_printf ("CP%s", tmp); - } else { - /* Just assume its ok enough as is, case and all */ - iname = g_strdup (charset); - } - - g_hash_table_insert (iconv_charsets, g_strdup (name), iname); - UNLOCK (); - - return iname; -} - -static void -flush_entry (struct _iconv_cache *ic) -{ - struct _iconv_cache_node *in, *nn; - - in = (struct _iconv_cache_node *) ic->open.head; - nn = in->next; - while (nn) { - if (in->cd != (iconv_t) -1) { - g_hash_table_remove (iconv_cache_open, in->cd); - iconv_close (in->cd); - } - - g_free (in); - in = nn; - nn = in->next; - } - - g_free (ic->conv); - g_free (ic); -} - - -/* This should run pretty quick, its called a lot */ -/** - * camel_iconv_open: - * @to: charset to convert to - * @from: charset to convert from - * - * Allocates a coversion descriptor suitable for converting byte - * sequences from charset @from to charset @to. The resulting - * descriptor can be used with iconv (or the camel_iconv wrapper) any - * number of times until closed using camel_iconv_close. - * - * Returns a new conversion descriptor for use with iconv on success - * or (iconv_t) -1 on fail as well as setting an appropriate errno - * value. - **/ -iconv_t -camel_iconv_open (const char *to, const char *from) -{ - struct _iconv_cache *ic; - struct _iconv_cache_node *in; - int errnosav; - iconv_t cd; - char *key; - - if (to == NULL || from == NULL) { - errno = EINVAL; - return (iconv_t) -1; - } - - to = camel_iconv_charset_name (to); - from = camel_iconv_charset_name (from); - key = g_alloca (strlen (to) + strlen (from) + 2); - sprintf (key, "%s:%s", to, from); - - LOCK (); - - ic = g_hash_table_lookup (iconv_cache, key); - if (ic) { - e_dlist_remove ((EDListNode *) ic); - } else { - struct _iconv_cache *last = (struct _iconv_cache *) iconv_cache_list.tailpred; - struct _iconv_cache *prev; - - prev = last->prev; - while (prev && iconv_cache_size > CAMEL_ICONV_CACHE_SIZE) { - in = (struct _iconv_cache_node *) last->open.head; - if (in->next && !in->busy) { - d(printf ("Flushing iconv converter '%s'\n", last->conv)); - e_dlist_remove ((EDListNode *) last); - g_hash_table_remove (iconv_cache, last->conv); - flush_entry (last); - iconv_cache_size--; - } - last = prev; - prev = last->prev; - } - - iconv_cache_size++; - - ic = g_new (struct _iconv_cache); - e_dlist_init (&ic->open); - ic->conv = g_strdup (key); - g_hash_table_insert (iconv_cache, ic->conv, ic); - - d(printf ("Creating iconv converter '%s'\n", ic->conv)); - } - e_dlist_addhead (&iconv_cache_list, (EDListNode *) ic); - - /* If we have a free iconv, use it */ - in = (struct _iconv_cache_node *) ic->open.tailpred; - if (in->prev && !in->busy) { - d(printf ("using existing iconv converter '%s'\n", ic->conv)); - cd = in->cd; - if (cd != (iconv_t) -1) { - /* work around some broken iconv implementations - * that die if the length arguments are NULL - */ - size_t buggy_iconv_len = 0; - char *buggy_iconv_buf = NULL; - - /* resets the converter */ - iconv (cd, &buggy_iconv_buf, &buggy_iconv_len, &buggy_iconv_buf, &buggy_iconv_len); - in->busy = TRUE; - e_dlist_remove ((EDListNode *) in); - e_dlist_addhead (&ic->open, (EDListNode *) in); - } - } else { - d(printf("creating new iconv converter '%s'\n", ic->conv)); - cd = iconv_open (to, from); - in = g_new (struct _iconv_cache_node); - in->cd = cd; - in->parent = ic; - e_dlist_addhead (&ic->open, (EDListNode *) in); - if (cd != (iconv_t) -1) { - g_hash_table_insert (iconv_cache_open, cd, in); - in->busy = TRUE; - } else { - errnosav = errno; - g_warning ("Could not open converter for '%s' to '%s' charset", from, to); - in->busy = FALSE; - errno = errnosav; - } - } - - UNLOCK (); - - return cd; -} - - -/** - * camel_iconv: - * @cd: conversion descriptor - * @inbuf: address of input buffer - * @inleft: input bytes left - * @outbuf: address of output buffer - * @outleft: output bytes left - * - * Read `man 3 iconv` - **/ -size_t -camel_iconv (iconv_t cd, const char **inbuf, size_t *inleft, char **outbuf, size_t *outleft) -{ - return iconv (cd, (ICONV_CONST char **) inbuf, inleft, outbuf, outleft); -} - - -/** - * camel_iconv_close: - * @cd: iconv conversion descriptor - * - * Closes the iconv descriptor @cd. - * - * Returns 0 on success or -1 on fail as well as setting an - * appropriate errno value. - **/ -void -camel_iconv_close (iconv_t cd) -{ - struct _iconv_cache_node *in; - - if (cd == (iconv_t) -1) - return; - - LOCK (); - - in = g_hash_table_lookup (iconv_cache_open, cd); - if (in) { - d(printf ("closing iconv converter '%s'\n", in->parent->conv)); - e_dlist_remove ((EDListNode *) in); - in->busy = FALSE; - e_dlist_addtail (&in->parent->open, (EDListNode *) in); - } else { - g_warning ("trying to close iconv i dont know about: %p", cd); - iconv_close (cd); - } - - UNLOCK (); -} - - -const char * -camel_iconv_locale_charset (void) -{ - camel_iconv_init (FALSE); - - return locale_charset; -} - - -const char * -camel_iconv_locale_language (void) -{ - camel_iconv_init (FALSE); - - return locale_lang; -} - -/* map CJKR charsets to their language code */ -/* NOTE: only support charset names that will be returned by - * e_iconv_charset_name() so that we don't have to keep track of all - * the aliases too. */ -static struct { - char *charset; - char *lang; -} cjkr_lang_map[] = { - { "Big5", "zh" }, - { "BIG5HKSCS", "zh" }, - { "gb2312", "zh" }, - { "gb18030", "zh" }, - { "gbk", "zh" }, - { "euc-tw", "zh" }, - { "iso-2022-jp", "ja" }, - { "sjis", "ja" }, - { "ujis", "ja" }, - { "eucJP", "ja" }, - { "euc-jp", "ja" }, - { "euc-kr", "ko" }, - { "koi8-r", "ru" }, - { "koi8-u", "uk" } -}; - -#define NUM_CJKR_LANGS (sizeof (cjkr_lang_map) / sizeof (cjkr_lang_map[0])) - -const char * -camel_iconv_charset_language (const char *charset) -{ - int i; - - if (!charset) - return NULL; - - charset = camel_iconv_charset_name (charset); - for (i = 0; i < NUM_CJKR_LANGS; i++) { - if (!strcasecmp (cjkr_lang_map[i].charset, charset)) - return cjkr_lang_map[i].lang; - } - - return NULL; -} |