/
language.c
1924 lines (1539 loc) · 43.5 KB
/
language.c
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/*
* I18N/language support for CUPS.
*
* Copyright 2007-2017 by Apple Inc.
* Copyright 1997-2007 by Easy Software Products.
*
* Licensed under Apache License v2.0. See the file "LICENSE" for more information.
*/
/*
* Include necessary headers...
*/
#include "cups-private.h"
#include "debug-internal.h"
#ifdef HAVE_LANGINFO_H
# include <langinfo.h>
#endif /* HAVE_LANGINFO_H */
#ifdef _WIN32
# include <io.h>
#else
# include <unistd.h>
#endif /* _WIN32 */
#ifdef HAVE_COREFOUNDATION_H
# include <CoreFoundation/CoreFoundation.h>
#endif /* HAVE_COREFOUNDATION_H */
/*
* Local globals...
*/
static _cups_mutex_t lang_mutex = _CUPS_MUTEX_INITIALIZER;
/* Mutex to control access to cache */
static cups_lang_t *lang_cache = NULL;
/* Language string cache */
static const char * const lang_encodings[] =
{ /* Encoding strings */
"us-ascii", "iso-8859-1",
"iso-8859-2", "iso-8859-3",
"iso-8859-4", "iso-8859-5",
"iso-8859-6", "iso-8859-7",
"iso-8859-8", "iso-8859-9",
"iso-8859-10", "utf-8",
"iso-8859-13", "iso-8859-14",
"iso-8859-15", "cp874",
"cp1250", "cp1251",
"cp1252", "cp1253",
"cp1254", "cp1255",
"cp1256", "cp1257",
"cp1258", "koi8-r",
"koi8-u", "iso-8859-11",
"iso-8859-16", "mac",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"cp932", "cp936",
"cp949", "cp950",
"cp1361", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"unknown", "unknown",
"euc-cn", "euc-jp",
"euc-kr", "euc-tw",
"shift_jisx0213"
};
#ifdef __APPLE__
typedef struct
{
const char * const language; /* Language ID */
const char * const locale; /* Locale ID */
} _apple_language_locale_t;
static const _apple_language_locale_t apple_language_locale[] =
{ /* Language to locale ID LUT */
{ "en", "en_US" },
{ "nb", "no" },
{ "nb_NO", "no" },
{ "zh-Hans", "zh_CN" },
{ "zh_HANS", "zh_CN" },
{ "zh-Hant", "zh_TW" },
{ "zh_HANT", "zh_TW" },
{ "zh-Hant_CN", "zh_TW" }
};
#endif /* __APPLE__ */
/*
* Local functions...
*/
#ifdef __APPLE__
static const char *appleLangDefault(void);
# ifdef CUPS_BUNDLEDIR
# ifndef CF_RETURNS_RETAINED
# if __has_feature(attribute_cf_returns_retained)
# define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
# else
# define CF_RETURNS_RETAINED
# endif /* __has_feature(attribute_cf_returns_retained) */
# endif /* !CF_RETURNED_RETAINED */
static cups_array_t *appleMessageLoad(const char *locale) CF_RETURNS_RETAINED;
# endif /* CUPS_BUNDLEDIR */
#endif /* __APPLE__ */
static cups_lang_t *cups_cache_lookup(const char *name, cups_encoding_t encoding);
static int cups_message_compare(_cups_message_t *m1, _cups_message_t *m2);
static void cups_message_free(_cups_message_t *m);
static void cups_message_load(cups_lang_t *lang);
static void cups_message_puts(cups_file_t *fp, const char *s);
static int cups_read_strings(cups_file_t *fp, int flags, cups_array_t *a);
static void cups_unquote(char *d, const char *s);
#ifdef __APPLE__
/*
* '_cupsAppleLanguage()' - Get the Apple language identifier associated with a
* locale ID.
*/
const char * /* O - Language ID */
_cupsAppleLanguage(const char *locale, /* I - Locale ID */
char *language,/* I - Language ID buffer */
size_t langsize) /* I - Size of language ID buffer */
{
int i; /* Looping var */
CFStringRef localeid, /* CF locale identifier */
langid; /* CF language identifier */
/*
* Copy the locale name and convert, as needed, to the Apple-specific
* locale identifier...
*/
switch (strlen(locale))
{
default :
/*
* Invalid locale...
*/
strlcpy(language, "en", langsize);
break;
case 2 :
strlcpy(language, locale, langsize);
break;
case 5 :
strlcpy(language, locale, langsize);
if (language[2] == '-')
{
/*
* Convert ll-cc to ll_CC...
*/
language[2] = '_';
language[3] = (char)toupper(language[3] & 255);
language[4] = (char)toupper(language[4] & 255);
}
break;
}
for (i = 0;
i < (int)(sizeof(apple_language_locale) /
sizeof(apple_language_locale[0]));
i ++)
if (!strcmp(locale, apple_language_locale[i].locale))
{
strlcpy(language, apple_language_locale[i].language, sizeof(language));
break;
}
/*
* Attempt to map the locale ID to a language ID...
*/
if ((localeid = CFStringCreateWithCString(kCFAllocatorDefault, language,
kCFStringEncodingASCII)) != NULL)
{
if ((langid = CFLocaleCreateCanonicalLanguageIdentifierFromString(
kCFAllocatorDefault, localeid)) != NULL)
{
CFStringGetCString(langid, language, (CFIndex)langsize, kCFStringEncodingASCII);
CFRelease(langid);
}
CFRelease(localeid);
}
/*
* Return what we got...
*/
return (language);
}
/*
* '_cupsAppleLocale()' - Get the locale associated with an Apple language ID.
*/
const char * /* O - Locale */
_cupsAppleLocale(CFStringRef languageName, /* I - Apple language ID */
char *locale, /* I - Buffer for locale */
size_t localesize) /* I - Size of buffer */
{
int i; /* Looping var */
CFStringRef localeName; /* Locale as a CF string */
#ifdef DEBUG
char temp[1024]; /* Temporary string */
if (!CFStringGetCString(languageName, temp, (CFIndex)sizeof(temp), kCFStringEncodingASCII))
temp[0] = '\0';
DEBUG_printf(("_cupsAppleLocale(languageName=%p(%s), locale=%p, localsize=%d)", (void *)languageName, temp, (void *)locale, (int)localesize));
#endif /* DEBUG */
localeName = CFLocaleCreateCanonicalLocaleIdentifierFromString(kCFAllocatorDefault, languageName);
if (localeName)
{
/*
* Copy the locale name and tweak as needed...
*/
if (!CFStringGetCString(localeName, locale, (CFIndex)localesize, kCFStringEncodingASCII))
*locale = '\0';
DEBUG_printf(("_cupsAppleLocale: locale=\"%s\"", locale));
CFRelease(localeName);
/*
* Map new language identifiers to locales...
*/
for (i = 0;
i < (int)(sizeof(apple_language_locale) /
sizeof(apple_language_locale[0]));
i ++)
{
size_t len = strlen(apple_language_locale[i].language);
if (!strcmp(locale, apple_language_locale[i].language) ||
(!strncmp(locale, apple_language_locale[i].language, len) && (locale[len] == '_' || locale[len] == '-')))
{
DEBUG_printf(("_cupsAppleLocale: Updating locale to \"%s\".", apple_language_locale[i].locale));
strlcpy(locale, apple_language_locale[i].locale, localesize);
break;
}
}
}
else
{
/*
* Just try the Apple language name...
*/
if (!CFStringGetCString(languageName, locale, (CFIndex)localesize, kCFStringEncodingASCII))
*locale = '\0';
}
if (!*locale)
{
DEBUG_puts("_cupsAppleLocale: Returning NULL.");
return (NULL);
}
/*
* Convert language subtag into region subtag...
*/
if (locale[2] == '-')
locale[2] = '_';
else if (locale[3] == '-')
locale[3] = '_';
if (!strchr(locale, '.'))
strlcat(locale, ".UTF-8", localesize);
DEBUG_printf(("_cupsAppleLocale: Returning \"%s\".", locale));
return (locale);
}
#endif /* __APPLE__ */
/*
* '_cupsEncodingName()' - Return the character encoding name string
* for the given encoding enumeration.
*/
const char * /* O - Character encoding */
_cupsEncodingName(
cups_encoding_t encoding) /* I - Encoding value */
{
if (encoding < CUPS_US_ASCII ||
encoding >= (cups_encoding_t)(sizeof(lang_encodings) / sizeof(lang_encodings[0])))
{
DEBUG_printf(("1_cupsEncodingName(encoding=%d) = out of range (\"%s\")",
encoding, lang_encodings[0]));
return (lang_encodings[0]);
}
else
{
DEBUG_printf(("1_cupsEncodingName(encoding=%d) = \"%s\"",
encoding, lang_encodings[encoding]));
return (lang_encodings[encoding]);
}
}
/*
* 'cupsLangDefault()' - Return the default language.
*/
cups_lang_t * /* O - Language data */
cupsLangDefault(void)
{
return (cupsLangGet(NULL));
}
/*
* 'cupsLangEncoding()' - Return the character encoding (us-ascii, etc.)
* for the given language.
*/
const char * /* O - Character encoding */
cupsLangEncoding(cups_lang_t *lang) /* I - Language data */
{
if (lang == NULL)
return ((char*)lang_encodings[0]);
else
return ((char*)lang_encodings[lang->encoding]);
}
/*
* 'cupsLangFlush()' - Flush all language data out of the cache.
*/
void
cupsLangFlush(void)
{
cups_lang_t *lang, /* Current language */
*next; /* Next language */
/*
* Free all languages in the cache...
*/
_cupsMutexLock(&lang_mutex);
for (lang = lang_cache; lang != NULL; lang = next)
{
/*
* Free all messages...
*/
_cupsMessageFree(lang->strings);
/*
* Then free the language structure itself...
*/
next = lang->next;
free(lang);
}
lang_cache = NULL;
_cupsMutexUnlock(&lang_mutex);
}
/*
* 'cupsLangFree()' - Free language data.
*
* This does not actually free anything; use @link cupsLangFlush@ for that.
*/
void
cupsLangFree(cups_lang_t *lang) /* I - Language to free */
{
_cupsMutexLock(&lang_mutex);
if (lang != NULL && lang->used > 0)
lang->used --;
_cupsMutexUnlock(&lang_mutex);
}
/*
* 'cupsLangGet()' - Get a language.
*/
cups_lang_t * /* O - Language data */
cupsLangGet(const char *language) /* I - Language or locale */
{
int i; /* Looping var */
#ifndef __APPLE__
char locale[255]; /* Copy of locale name */
#endif /* !__APPLE__ */
char langname[16], /* Requested language name */
country[16], /* Country code */
charset[16], /* Character set */
*csptr, /* Pointer to CODESET string */
*ptr, /* Pointer into language/charset */
real[48]; /* Real language name */
cups_encoding_t encoding; /* Encoding to use */
cups_lang_t *lang; /* Current language... */
static const char * const locale_encodings[] =
{ /* Locale charset names */
"ASCII", "ISO88591", "ISO88592", "ISO88593",
"ISO88594", "ISO88595", "ISO88596", "ISO88597",
"ISO88598", "ISO88599", "ISO885910", "UTF8",
"ISO885913", "ISO885914", "ISO885915", "CP874",
"CP1250", "CP1251", "CP1252", "CP1253",
"CP1254", "CP1255", "CP1256", "CP1257",
"CP1258", "KOI8R", "KOI8U", "ISO885911",
"ISO885916", "MACROMAN", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"CP932", "CP936", "CP949", "CP950",
"CP1361", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"", "", "", "",
"EUCCN", "EUCJP", "EUCKR", "EUCTW",
"SHIFT_JISX0213"
};
DEBUG_printf(("2cupsLangGet(language=\"%s\")", language));
#ifdef __APPLE__
/*
* Set the character set to UTF-8...
*/
strlcpy(charset, "UTF8", sizeof(charset));
/*
* Apple's setlocale doesn't give us the user's localization
* preference so we have to look it up this way...
*/
if (!language)
{
if (!getenv("SOFTWARE") || (language = getenv("LANG")) == NULL)
language = appleLangDefault();
DEBUG_printf(("4cupsLangGet: language=\"%s\"", language));
}
#else
/*
* Set the charset to "unknown"...
*/
charset[0] = '\0';
/*
* Use setlocale() to determine the currently set locale, and then
* fallback to environment variables to avoid setting the locale,
* since setlocale() is not thread-safe!
*/
if (!language)
{
/*
* First see if the locale has been set; if it is still "C" or
* "POSIX", use the environment to get the default...
*/
# ifdef LC_MESSAGES
ptr = setlocale(LC_MESSAGES, NULL);
# else
ptr = setlocale(LC_ALL, NULL);
# endif /* LC_MESSAGES */
DEBUG_printf(("4cupsLangGet: current locale is \"%s\"", ptr));
if (!ptr || !strcmp(ptr, "C") || !strcmp(ptr, "POSIX"))
{
/*
* Get the character set from the LC_CTYPE locale setting...
*/
if ((ptr = getenv("LC_CTYPE")) == NULL)
if ((ptr = getenv("LC_ALL")) == NULL)
if ((ptr = getenv("LANG")) == NULL)
ptr = "en_US";
if ((csptr = strchr(ptr, '.')) != NULL)
{
/*
* Extract the character set from the environment...
*/
for (ptr = charset, csptr ++; *csptr; csptr ++)
if (ptr < (charset + sizeof(charset) - 1) && _cups_isalnum(*csptr))
*ptr++ = *csptr;
*ptr = '\0';
}
/*
* Get the locale for messages from the LC_MESSAGES locale setting...
*/
if ((ptr = getenv("LC_MESSAGES")) == NULL)
if ((ptr = getenv("LC_ALL")) == NULL)
if ((ptr = getenv("LANG")) == NULL)
ptr = "en_US";
}
if (ptr)
{
strlcpy(locale, ptr, sizeof(locale));
language = locale;
/*
* CUPS STR #2575: Map "nb" to "no" for back-compatibility...
*/
if (!strncmp(locale, "nb", 2))
locale[1] = 'o';
DEBUG_printf(("4cupsLangGet: new language value is \"%s\"", language));
}
}
#endif /* __APPLE__ */
/*
* If "language" is NULL at this point, then chances are we are using
* a language that is not installed for the base OS.
*/
if (!language)
{
/*
* Switch to the POSIX ("C") locale...
*/
language = "C";
}
#ifdef CODESET
/*
* On systems that support the nl_langinfo(CODESET) call, use
* this value as the character set...
*/
if (!charset[0] && (csptr = nl_langinfo(CODESET)) != NULL)
{
/*
* Copy all of the letters and numbers in the CODESET string...
*/
for (ptr = charset; *csptr; csptr ++)
if (_cups_isalnum(*csptr) && ptr < (charset + sizeof(charset) - 1))
*ptr++ = *csptr;
*ptr = '\0';
DEBUG_printf(("4cupsLangGet: charset set to \"%s\" via "
"nl_langinfo(CODESET)...", charset));
}
#endif /* CODESET */
/*
* If we don't have a character set by now, default to UTF-8...
*/
if (!charset[0])
strlcpy(charset, "UTF8", sizeof(charset));
/*
* Parse the language string passed in to a locale string. "C" is the
* standard POSIX locale and is copied unchanged. Otherwise the
* language string is converted from ll-cc[.charset] (language-country)
* to ll_CC[.CHARSET] to match the file naming convention used by all
* POSIX-compliant operating systems. Invalid language names are mapped
* to the POSIX locale.
*/
country[0] = '\0';
if (language == NULL || !language[0] ||
!strcmp(language, "POSIX"))
strlcpy(langname, "C", sizeof(langname));
else
{
/*
* Copy the parts of the locale string over safely...
*/
for (ptr = langname; *language; language ++)
if (*language == '_' || *language == '-' || *language == '.')
break;
else if (ptr < (langname + sizeof(langname) - 1))
*ptr++ = (char)tolower(*language & 255);
*ptr = '\0';
if (*language == '_' || *language == '-')
{
/*
* Copy the country code...
*/
for (language ++, ptr = country; *language; language ++)
if (*language == '.')
break;
else if (ptr < (country + sizeof(country) - 1))
*ptr++ = (char)toupper(*language & 255);
*ptr = '\0';
/*
* Map Chinese region codes to legacy country codes.
*/
if (!strcmp(language, "zh") && !strcmp(country, "HANS"))
strlcpy(country, "CN", sizeof(country));
if (!strcmp(language, "zh") && !strcmp(country, "HANT"))
strlcpy(country, "TW", sizeof(country));
}
if (*language == '.' && !charset[0])
{
/*
* Copy the encoding...
*/
for (language ++, ptr = charset; *language; language ++)
if (_cups_isalnum(*language) && ptr < (charset + sizeof(charset) - 1))
*ptr++ = (char)toupper(*language & 255);
*ptr = '\0';
}
/*
* Force a POSIX locale for an invalid language name...
*/
if (strlen(langname) != 2 && strlen(langname) != 3)
{
strlcpy(langname, "C", sizeof(langname));
country[0] = '\0';
charset[0] = '\0';
}
}
DEBUG_printf(("4cupsLangGet: langname=\"%s\", country=\"%s\", charset=\"%s\"",
langname, country, charset));
/*
* Figure out the desired encoding...
*/
encoding = CUPS_AUTO_ENCODING;
if (charset[0])
{
for (i = 0;
i < (int)(sizeof(locale_encodings) / sizeof(locale_encodings[0]));
i ++)
if (!_cups_strcasecmp(charset, locale_encodings[i]))
{
encoding = (cups_encoding_t)i;
break;
}
if (encoding == CUPS_AUTO_ENCODING)
{
/*
* Map alternate names for various character sets...
*/
if (!_cups_strcasecmp(charset, "iso-2022-jp") ||
!_cups_strcasecmp(charset, "sjis"))
encoding = CUPS_WINDOWS_932;
else if (!_cups_strcasecmp(charset, "iso-2022-cn"))
encoding = CUPS_WINDOWS_936;
else if (!_cups_strcasecmp(charset, "iso-2022-kr"))
encoding = CUPS_WINDOWS_949;
else if (!_cups_strcasecmp(charset, "big5"))
encoding = CUPS_WINDOWS_950;
}
}
DEBUG_printf(("4cupsLangGet: encoding=%d(%s)", encoding,
encoding == CUPS_AUTO_ENCODING ? "auto" :
lang_encodings[encoding]));
/*
* See if we already have this language/country loaded...
*/
if (country[0])
snprintf(real, sizeof(real), "%s_%s", langname, country);
else
strlcpy(real, langname, sizeof(real));
_cupsMutexLock(&lang_mutex);
if ((lang = cups_cache_lookup(real, encoding)) != NULL)
{
_cupsMutexUnlock(&lang_mutex);
DEBUG_printf(("3cupsLangGet: Using cached copy of \"%s\"...", real));
return (lang);
}
/*
* See if there is a free language available; if so, use that
* record...
*/
for (lang = lang_cache; lang != NULL; lang = lang->next)
if (lang->used == 0)
break;
if (lang == NULL)
{
/*
* Allocate memory for the language and add it to the cache.
*/
if ((lang = calloc(sizeof(cups_lang_t), 1)) == NULL)
{
_cupsMutexUnlock(&lang_mutex);
return (NULL);
}
lang->next = lang_cache;
lang_cache = lang;
}
else
{
/*
* Free all old strings as needed...
*/
_cupsMessageFree(lang->strings);
lang->strings = NULL;
}
/*
* Then assign the language and encoding fields...
*/
lang->used ++;
strlcpy(lang->language, real, sizeof(lang->language));
if (encoding != CUPS_AUTO_ENCODING)
lang->encoding = encoding;
else
lang->encoding = CUPS_UTF8;
/*
* Return...
*/
_cupsMutexUnlock(&lang_mutex);
return (lang);
}
/*
* '_cupsLangString()' - Get a message string.
*
* The returned string is UTF-8 encoded; use cupsUTF8ToCharset() to
* convert the string to the language encoding.
*/
const char * /* O - Localized message */
_cupsLangString(cups_lang_t *lang, /* I - Language */
const char *message) /* I - Message */
{
const char *s; /* Localized message */
DEBUG_printf(("_cupsLangString(lang=%p, message=\"%s\")", (void *)lang, message));
/*
* Range check input...
*/
if (!lang || !message || !*message)
return (message);
_cupsMutexLock(&lang_mutex);
/*
* Load the message catalog if needed...
*/
if (!lang->strings)
cups_message_load(lang);
s = _cupsMessageLookup(lang->strings, message);
_cupsMutexUnlock(&lang_mutex);
return (s);
}
/*
* '_cupsMessageFree()' - Free a messages array.
*/
void
_cupsMessageFree(cups_array_t *a) /* I - Message array */
{
#if defined(__APPLE__) && defined(CUPS_BUNDLEDIR)
/*
* Release the cups.strings dictionary as needed...
*/
if (cupsArrayUserData(a))
CFRelease((CFDictionaryRef)cupsArrayUserData(a));
#endif /* __APPLE__ && CUPS_BUNDLEDIR */
/*
* Free the array...
*/
cupsArrayDelete(a);
}
/*
* '_cupsMessageLoad()' - Load a .po or .strings file into a messages array.
*/
cups_array_t * /* O - New message array */
_cupsMessageLoad(const char *filename, /* I - Message catalog to load */
int flags) /* I - Load flags */
{
cups_file_t *fp; /* Message file */
cups_array_t *a; /* Message array */
_cups_message_t *m; /* Current message */
char s[4096], /* String buffer */
*ptr, /* Pointer into buffer */
*temp; /* New string */
size_t length, /* Length of combined strings */
ptrlen; /* Length of string */
DEBUG_printf(("4_cupsMessageLoad(filename=\"%s\")", filename));
/*
* Create an array to hold the messages...
*/
if ((a = _cupsMessageNew(NULL)) == NULL)
{
DEBUG_puts("5_cupsMessageLoad: Unable to allocate array!");
return (NULL);
}
/*
* Open the message catalog file...
*/
if ((fp = cupsFileOpen(filename, "r")) == NULL)
{
DEBUG_printf(("5_cupsMessageLoad: Unable to open file: %s",
strerror(errno)));
return (a);
}
if (flags & _CUPS_MESSAGE_STRINGS)
{
while (cups_read_strings(fp, flags, a));
}
else
{
/*
* Read messages from the catalog file until EOF...
*
* The format is the GNU gettext .po format, which is fairly simple:
*
* msgid "some text"
* msgstr "localized text"
*
* The ID and localized text can span multiple lines using the form:
*
* msgid ""
* "some long text"
* msgstr ""
* "localized text spanning "
* "multiple lines"
*/
m = NULL;
while (cupsFileGets(fp, s, sizeof(s)) != NULL)
{
/*
* Skip blank and comment lines...
*/
if (s[0] == '#' || !s[0])
continue;
/*
* Strip the trailing quote...
*/
if ((ptr = strrchr(s, '\"')) == NULL)
continue;
*ptr = '\0';
/*
* Find start of value...
*/
if ((ptr = strchr(s, '\"')) == NULL)
continue;
ptr ++;