diff options
Diffstat (limited to 'camel/camel-charset-map.c')
| -rw-r--r-- | camel/camel-charset-map.c | 107 |
1 files changed, 104 insertions, 3 deletions
diff --git a/camel/camel-charset-map.c b/camel/camel-charset-map.c index 236197ef86..d609321997 100644 --- a/camel/camel-charset-map.c +++ b/camel/camel-charset-map.c @@ -197,19 +197,85 @@ void main(void) #include "camel-charset-map.h" #include "camel-charset-map-private.h" +#include "hash-table-utils.h" #include <gal/unicode/gunicode.h> #include <locale.h> #include <string.h> #include <glib.h> +#ifdef ENABLE_THREADS +#include <pthread.h> +#endif + + +#ifdef ENABLE_THREADS +static pthread_mutex_t iconv_charsets_lock = PTHREAD_MUTEX_INITIALIZER; +#define ICONV_CHARSETS_LOCK() pthread_mutex_lock (&iconv_charsets_lock) +#define ICONV_CHARSETS_UNLOCK() pthread_mutex_unlock (&iconv_charsets_lock) +#else +#define ICONV_CHARSETS_LOCK() +#define ICONV_CHARSETS_UNLOCK() +#endif /* ENABLE_THREADS */ + +static GHashTable *iconv_charsets = NULL; + +struct { + char *charset; + char *iconv_name; +} known_iconv_charsets[] = { + /* 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 camel_charset_map_get_iconv_friendly_name() so I'm + not going to bother putting them all in here... */ + { "windows-cp1251", "cp1251" }, + { "windows-1251", "cp1251" }, + { "cp1251", "cp1251" }, + { NULL, NULL } +}; + + +static void +shutdown_foreach (gpointer key, gpointer value, gpointer data) +{ + g_free (key); + g_free (value); +} + +static void +camel_charset_map_shutdown (void) +{ + g_hash_table_foreach (iconv_charsets, shutdown_foreach, NULL); + g_hash_table_destroy (iconv_charsets); +} + +void +camel_charset_map_init (void) +{ + int i; + + if (iconv_charsets) + return; + + iconv_charsets = g_hash_table_new (g_strcase_hash, g_strcase_equal); + for (i = 0; known_iconv_charsets[i].charset != NULL; i++) { + g_hash_table_insert (iconv_charsets, g_strdup (known_iconv_charsets[i].charset), + g_strdup (known_iconv_charsets[i].iconv_name)); + } + + g_atexit (camel_charset_map_shutdown); +} -void camel_charset_init(CamelCharset *c) +void +camel_charset_init (CamelCharset *c) { c->mask = ~0; c->level = 0; } void -camel_charset_step(CamelCharset *c, const char *in, int len) +camel_charset_step (CamelCharset *c, const char *in, int len) { register unsigned int mask; register int level; @@ -260,7 +326,8 @@ camel_charset_best_mask(unsigned int mask) return "UTF-8"; } -const char *camel_charset_best_name(CamelCharset *charset) +const char * +camel_charset_best_name(CamelCharset *charset) { if (charset->level == 1) return "ISO-8859-1"; @@ -317,5 +384,39 @@ camel_charset_locale_name (void) return charset; } +const char * +camel_charset_get_iconv_friendly_name (const char *name) +{ + const char *charset; + + ICONV_CHARSETS_LOCK (); + charset = g_hash_table_lookup (iconv_charsets, name); + if (!charset) { + /* Attempt to friendlyify the charset */ + char *new_charset; + int len; + + /* Hack to convert charsets like ISO8859-1 to iconv-friendly ISO-8859-1 */ + if (!g_strncasecmp (name, "iso", 3) && name[3] != '-' && name[3] != '_') { + len = strlen (name); + new_charset = g_malloc (len + 2); + memcpy (new_charset, name, 3); + new_charset[3] = '-'; + memcpy (new_charset + 4, name + 3, len - 3); + new_charset[len + 1] = '\0'; + g_hash_table_insert (iconv_charsets, g_strdup (name), new_charset); + } else { + /* *shrug* - add it to the hash table just the way it is? */ + new_charset = g_strdup (name); + g_hash_table_insert (iconv_charsets, g_strdup (name), new_charset); + } + + charset = new_charset; + } + ICONV_CHARSETS_UNLOCK (); + + return charset; +} + #endif /* !BUILD_MAP */ |