/*
- * encoding.c: Convert "multibyte" strings (the locale-default encoding---
- * generally, UTF-8 or something like ISO-8859-1) to UTF-16LE strings, and vice
- * versa. Also, convert UTF-8 strings to multibyte strings.
+ * encoding.c
*/
/*
#include <iconv.h>
#include <pthread.h>
#include <stdlib.h>
+#include <string.h>
-bool wimlib_mbs_is_utf8 = true;
+bool wimlib_mbs_is_utf8 = !TCHAR_IS_UTF16LE;
/* List of iconv_t conversion descriptors for a specific character conversion.
* The idea is that it is not thread-safe to have just one conversion
#define DEFINE_CHAR_CONVERSION_FUNCTIONS(varname1, longname1, chartype1,\
varname2, longname2, chartype2,\
+ earlyreturn_on_utf8_locale, \
+ earlyreturn_expr, \
worst_case_len_expr, \
err_return, \
- err_msg) \
+ err_msg, \
+ modifier) \
static ICONV_LIST(iconv_##varname1##_to_##varname2, \
longname1, longname2); \
\
-int \
+modifier int \
varname1##_to_##varname2##_nbytes(const chartype1 *in, size_t in_nbytes,\
size_t *out_nbytes_ret) \
{ \
return ret; \
} \
\
-int \
+modifier int \
varname1##_to_##varname2##_buf(const chartype1 *in, size_t in_nbytes, \
chartype2 *out) \
{ \
return ret; \
} \
\
-int \
+modifier int \
varname1##_to_##varname2(const chartype1 *in, size_t in_nbytes, \
chartype2 **out_ret, \
size_t *out_nbytes_ret) \
chartype2 *out; \
size_t out_nbytes; \
\
+ if (earlyreturn_on_utf8_locale && wimlib_mbs_is_utf8) { \
+ earlyreturn_expr; \
+ /* Out same as in */ \
+ out = MALLOC(in_nbytes + sizeof(chartype2)); \
+ if (!out) \
+ return WIMLIB_ERR_NOMEM; \
+ memcpy(out, in, in_nbytes); \
+ out[in_nbytes / sizeof(chartype2)] = 0; \
+ *out_ret = out; \
+ *out_nbytes_ret = in_nbytes; \
+ return 0; \
+ } \
+ \
ret = varname1##_to_##varname2##_nbytes(in, in_nbytes, \
&out_nbytes); \
if (ret) \
\
ret = varname1##_to_##varname2##_buf(in, in_nbytes, out); \
if (ret) { \
- int errno_save = errno; \
FREE(out); \
- errno = errno_save; \
} else { \
*out_ret = out; \
*out_nbytes_ret = out_nbytes; \
return ret; \
}
+#if !TCHAR_IS_UTF16LE
+
+/* UNIX */
+
+DEFINE_CHAR_CONVERSION_FUNCTIONS(utf8, "UTF-8", tchar,
+ utf16le, "UTF-16LE", utf16lechar,
+ false,
+ ,
+ in_nbytes * 2,
+ WIMLIB_ERR_INVALID_UTF8_STRING,
+ ERROR_WITH_ERRNO("Failed to convert UTF-8 string "
+ "to UTF-16LE string!"),
+ static)
+
DEFINE_CHAR_CONVERSION_FUNCTIONS(utf16le, "UTF-16LE", utf16lechar,
- mbs, "", mbchar,
- in_nbytes / 2 * MB_CUR_MAX,
- WIMLIB_ERR_UNICODE_STRING_NOT_REPRESENTABLE,
- ERROR("Failed to convert UTF-16LE string "
- "to multibyte string!");
- ERROR("This may be because the UTF-16LE data "
- "could not be represented in your "
- "locale's character encoding."))
+ utf8, "UTF-8", tchar,
+ false,
+ ,
+ in_nbytes * 2,
+ WIMLIB_ERR_INVALID_UTF16_STRING,
+ ERROR_WITH_ERRNO("Failed to convert UTF-16LE string "
+ "to UTF-8 string!"),
+ static)
-DEFINE_CHAR_CONVERSION_FUNCTIONS(mbs, "", mbchar,
+DEFINE_CHAR_CONVERSION_FUNCTIONS(tstr, "", tchar,
utf16le, "UTF-16LE", utf16lechar,
+ true,
+ return utf8_to_utf16le(in, in_nbytes, out_ret, out_nbytes_ret),
in_nbytes * 2,
WIMLIB_ERR_INVALID_MULTIBYTE_STRING,
ERROR_WITH_ERRNO("Failed to convert multibyte "
- "string \"%s\" to UTF-16LE string!", in);
+ "string \"%"TS"\" to UTF-16LE string!", in);
ERROR("If the data you provided was UTF-8, please make sure "
- "the character encoding of your current locale is UTF-8."))
+ "the character encoding\n"
+ " of your current locale is UTF-8."),
+ )
-DEFINE_CHAR_CONVERSION_FUNCTIONS(utf8, "UTF-8", utf8char,
- mbs, "", mbchar,
- in_nbytes,
+DEFINE_CHAR_CONVERSION_FUNCTIONS(utf16le, "UTF-16LE", utf16lechar,
+ tstr, "", tchar,
+ true,
+ return utf16le_to_utf8(in, in_nbytes, out_ret, out_nbytes_ret),
+ in_nbytes * 2,
WIMLIB_ERR_UNICODE_STRING_NOT_REPRESENTABLE,
- ERROR("Failed to convert UTF-8 string to multibyte string!");
- ERROR("This may be because the UTF-8 data could not be represented "
- "in your locale's character encoding."))
+ ERROR("Failed to convert UTF-16LE string to "
+ "multibyte string!");
+ ERROR("This may be because the UTF-16LE string "
+ "could not be represented\n"
+ " in your locale's character encoding."),
+ )
+#endif
+
+/* tchar to UTF-8 and back */
+#if TCHAR_IS_UTF16LE
+
+/* Windows */
+DEFINE_CHAR_CONVERSION_FUNCTIONS(tstr, "UTF-16LE", tchar,
+ utf8, "UTF-8", char,
+ false,
+ ,
+ in_nbytes * 2,
+ WIMLIB_ERR_INVALID_UTF16_STRING,
+ ERROR_WITH_ERRNO("Failed to convert UTF-16LE "
+ "string \"%"TS"\" to UTF-8 string!", in),
+ static)
+
+DEFINE_CHAR_CONVERSION_FUNCTIONS(utf8, "UTF-8", char,
+ tstr, "UTF-16LE", tchar,
+ false,
+ ,
+ in_nbytes * 2,
+ WIMLIB_ERR_INVALID_UTF8_STRING,
+ ERROR_WITH_ERRNO("Failed to convert UTF-8 string "
+ "to UTF-16LE string!"),
+ static)
+#else
+
+/* UNIX */
+
+DEFINE_CHAR_CONVERSION_FUNCTIONS(tstr, "", tchar,
+ utf8, "UTF-8", char,
+ true,
+ ,
+ in_nbytes * 4,
+ WIMLIB_ERR_INVALID_MULTIBYTE_STRING,
+ ERROR_WITH_ERRNO("Failed to convert multibyte "
+ "string \"%"TS"\" to UTF-8 string!", in);
+ ERROR("If the data you provided was UTF-8, please make sure "
+ "the character\n"
+ " encoding of your current locale is UTF-8."),
+ static)
+
+DEFINE_CHAR_CONVERSION_FUNCTIONS(utf8, "UTF-8", char,
+ tstr, "", tchar,
+ true,
+ ,
+ in_nbytes * 4,
+ WIMLIB_ERR_UNICODE_STRING_NOT_REPRESENTABLE,
+ ERROR("Failed to convert UTF-8 string to "
+ "multibyte string!");
+ ERROR("This may be because the UTF-8 data "
+ "could not be represented\n"
+ " in your locale's character encoding."),
+ static)
+#endif
+
+int
+tstr_to_utf8_simple(const tchar *tstr, char **out)
+{
+ size_t out_nbytes;
+ return tstr_to_utf8(tstr, tstrlen(tstr) * sizeof(tchar),
+ out, &out_nbytes);
+}
+
+int
+utf8_to_tstr_simple(const char *utf8str, tchar **out)
+{
+ size_t out_nbytes;
+ return utf8_to_tstr(utf8str, strlen(utf8str), out, &out_nbytes);
+}
static void
iconv_cleanup(struct iconv_list_head *head)
void
iconv_global_cleanup()
{
- iconv_cleanup(&iconv_utf16le_to_mbs);
- iconv_cleanup(&iconv_mbs_to_utf16le);
- iconv_cleanup(&iconv_utf8_to_mbs);
-}
-
-bool
-utf8_str_contains_nonascii_chars(const utf8char *utf8_str)
-{
- do {
- if ((unsigned char)*utf8_str > 127)
- return true;
- } while (*++utf8_str);
- return false;
+ iconv_cleanup(&iconv_utf8_to_tstr);
+ iconv_cleanup(&iconv_tstr_to_utf8);
+#if !TCHAR_IS_UTF16LE
+ iconv_cleanup(&iconv_utf16le_to_tstr);
+ iconv_cleanup(&iconv_tstr_to_utf16le);
+ iconv_cleanup(&iconv_utf16le_to_utf8);
+ iconv_cleanup(&iconv_utf8_to_utf16le);
+#endif
}