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-rw-r--r--camel/camel-iconv.c646
1 files changed, 0 insertions, 646 deletions
diff --git a/camel/camel-iconv.c b/camel/camel-iconv.c
deleted file mode 100644
index 690ec520ad..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 "e-util/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;
-}
generated by cgit (git 2.34.1) at 2024-11-22 11:50:48 +0800