/*
* Copyright (C) 2012, 2013 Eric Biggers
*
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
*
- * wimlib 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 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib 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
+ * This file 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 Lesser General Public License for more
* details.
*
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
*/
-#include "wimlib_internal.h"
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
#include <errno.h>
#include <iconv.h>
#include <pthread.h>
-#include <stdlib.h>
#include <string.h>
+#include "wimlib.h"
+#include "wimlib/alloca.h"
+#include "wimlib/assert.h"
+#include "wimlib/encoding.h"
+#include "wimlib/endianness.h"
+#include "wimlib/error.h"
+#include "wimlib/list.h"
+#include "wimlib/util.h"
+
+
bool wimlib_mbs_is_utf8 = !TCHAR_IS_UTF16LE;
/* List of iconv_t conversion descriptors for a specific character conversion.
struct iconv_list_head name = { \
.from_encoding = from, \
.to_encoding = to, \
- .list = LIST_HEAD_INIT(name.list), \
- .mutex = PTHREAD_MUTEX_INITIALIZER, \
}
static iconv_t *
errno = errno_save;
}
-/* Prevent printing an error message if a character conversion error occurs
- * while printing an error message. (This variable is not per-thread but it
- * doesn't matter too much since it's just the error messages.) */
-static bool error_message_being_printed = false;
-
#define DEFINE_CHAR_CONVERSION_FUNCTIONS(varname1, longname1, chartype1,\
varname2, longname2, chartype2,\
earlyreturn_on_utf8_locale, \
if (cd == NULL) \
return WIMLIB_ERR_ICONV_NOT_AVAILABLE; \
\
+ chartype2 *buf; \
+ size_t bufsize; \
+ bool buf_onheap; \
+ bufsize = (worst_case_len_expr) * sizeof(chartype2); \
/* Worst case length */ \
- chartype2 buf[worst_case_len_expr]; \
+ if (bufsize <= STACK_MAX) { \
+ buf = alloca(bufsize); \
+ buf_onheap = false; \
+ } else { \
+ buf = MALLOC(bufsize); \
+ if (!buf) \
+ return WIMLIB_ERR_NOMEM; \
+ buf_onheap = true; \
+ } \
+ \
char *inbuf = (char*)in; \
size_t inbytesleft = in_nbytes; \
char *outbuf = (char*)buf; \
- size_t outbytesleft = sizeof(buf); \
+ size_t outbytesleft = bufsize; \
size_t len; \
int ret; \
\
len = iconv(*cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); \
if (len == (size_t)-1) { \
- if (!error_message_being_printed) { \
- error_message_being_printed = true; \
- err_msg; \
- error_message_being_printed = false; \
- } \
+ err_msg; \
ret = err_return; \
} else { \
- *out_nbytes_ret = sizeof(buf) - outbytesleft; \
+ *out_nbytes_ret = bufsize - outbytesleft; \
ret = 0; \
} \
put_iconv(cd); \
+ if (buf_onheap) \
+ FREE(buf); \
return ret; \
} \
\
\
len = iconv(*cd, &inbuf, &inbytesleft, &outbuf, &outbytesleft); \
if (len == (size_t)-1) { \
- if (!error_message_being_printed) { \
- error_message_being_printed = true; \
- err_msg; \
- error_message_being_printed = false; \
- } \
+ err_msg; \
ret = err_return; \
} else { \
out[(LARGE_NUMBER-outbytesleft)/sizeof(chartype2)] = 0; \
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,
WIMLIB_ERR_INVALID_UTF8_STRING,
ERROR_WITH_ERRNO("Failed to convert UTF-8 string "
"to UTF-16LE string!"),
- static)
+ )
#else
/* UNIX */
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,
ERROR("This may be because the UTF-8 data "
"could not be represented\n"
" in your locale's character encoding."),
- static)
+ )
#endif
int
return utf8_to_tstr(utf8str, strlen(utf8str), out, &out_nbytes);
}
+static void
+iconv_init(struct iconv_list_head *head)
+{
+ pthread_mutex_init(&head->mutex, NULL);
+ INIT_LIST_HEAD(&head->list);
+}
+
static void
iconv_cleanup(struct iconv_list_head *head)
{
}
void
-iconv_global_cleanup()
+iconv_global_init(void)
+{
+ iconv_init(&iconv_utf8_to_tstr);
+ iconv_init(&iconv_tstr_to_utf8);
+#if !TCHAR_IS_UTF16LE
+ iconv_init(&iconv_utf16le_to_tstr);
+ iconv_init(&iconv_tstr_to_utf16le);
+ iconv_init(&iconv_utf16le_to_utf8);
+ iconv_init(&iconv_utf8_to_utf16le);
+#endif
+}
+
+void
+iconv_global_cleanup(void)
{
iconv_cleanup(&iconv_utf8_to_tstr);
iconv_cleanup(&iconv_tstr_to_utf8);
iconv_cleanup(&iconv_utf8_to_utf16le);
#endif
}
+
+/* A table that maps from UCS-2 characters to their upper case equivalents.
+ * Index and array values are both CPU endian.
+ * Note: this is only an *approximation* of real UTF-16 case folding.
+ */
+static u16 upcase[65536];
+
+void
+init_upcase(void)
+{
+ /* This is the table used in NTFS volumes formatted by Windows 10.
+ * It was compressed by tools/compress_upcase_table.c. */
+ static const u16 upcase_compressed[] = {
+ 0x0000, 0x0000, 0x0060, 0x0000, 0x0000, 0xffe0, 0x0019, 0x0061,
+ 0x0061, 0x0000, 0x001b, 0x005d, 0x0008, 0x0060, 0x0000, 0x0079,
+ 0x0000, 0x0000, 0x0000, 0xffff, 0x002f, 0x0100, 0x0002, 0x0000,
+ 0x0007, 0x012b, 0x0011, 0x0121, 0x002f, 0x0103, 0x0006, 0x0101,
+ 0x0000, 0x00c3, 0x0006, 0x0131, 0x0007, 0x012e, 0x0004, 0x0000,
+ 0x0003, 0x012f, 0x0000, 0x0061, 0x0004, 0x0130, 0x0000, 0x00a3,
+ 0x0003, 0x0000, 0x0000, 0x0082, 0x000b, 0x0131, 0x0006, 0x0189,
+ 0x0008, 0x012f, 0x0007, 0x012e, 0x0000, 0x0038, 0x0006, 0x0000,
+ 0x0000, 0xfffe, 0x0007, 0x01c4, 0x000f, 0x0101, 0x0000, 0xffb1,
+ 0x0015, 0x011e, 0x0004, 0x01cc, 0x002a, 0x0149, 0x0014, 0x0149,
+ 0x0007, 0x0000, 0x0009, 0x018c, 0x000b, 0x0138, 0x0000, 0x2a1f,
+ 0x0000, 0x2a1c, 0x0000, 0x0000, 0x0000, 0xff2e, 0x0000, 0xff32,
+ 0x0000, 0x0000, 0x0000, 0xff33, 0x0000, 0xff33, 0x0000, 0x0000,
+ 0x0000, 0xff36, 0x0000, 0x0000, 0x0000, 0xff35, 0x0004, 0x0000,
+ 0x0002, 0x0257, 0x0000, 0x0000, 0x0000, 0xff31, 0x0004, 0x0000,
+ 0x0000, 0xff2f, 0x0000, 0xff2d, 0x0000, 0x0000, 0x0000, 0x29f7,
+ 0x0003, 0x0000, 0x0002, 0x0269, 0x0000, 0x29fd, 0x0000, 0xff2b,
+ 0x0002, 0x0000, 0x0000, 0xff2a, 0x0007, 0x0000, 0x0000, 0x29e7,
+ 0x0002, 0x0000, 0x0000, 0xff26, 0x0005, 0x027e, 0x0003, 0x027e,
+ 0x0000, 0xffbb, 0x0000, 0xff27, 0x0000, 0xff27, 0x0000, 0xffb9,
+ 0x0005, 0x0000, 0x0000, 0xff25, 0x0065, 0x007b, 0x0079, 0x0293,
+ 0x0008, 0x012d, 0x0003, 0x019c, 0x0002, 0x037b, 0x002e, 0x0000,
+ 0x0000, 0xffda, 0x0000, 0xffdb, 0x0002, 0x03ad, 0x0012, 0x0060,
+ 0x000a, 0x0060, 0x0000, 0xffc0, 0x0000, 0xffc1, 0x0000, 0xffc1,
+ 0x0008, 0x0000, 0x0000, 0xfff8, 0x001a, 0x0118, 0x0000, 0x0007,
+ 0x0008, 0x018d, 0x0009, 0x0233, 0x0046, 0x0035, 0x0006, 0x0061,
+ 0x0000, 0xffb0, 0x000f, 0x0450, 0x0025, 0x010e, 0x000a, 0x036b,
+ 0x0032, 0x048b, 0x000e, 0x0100, 0x0000, 0xfff1, 0x0037, 0x048a,
+ 0x0026, 0x0465, 0x0034, 0x0000, 0x0000, 0xffd0, 0x0025, 0x0561,
+ 0x00de, 0x0293, 0x1714, 0x0587, 0x0000, 0x8a04, 0x0003, 0x0000,
+ 0x0000, 0x0ee6, 0x0087, 0x02ee, 0x0092, 0x1e01, 0x0069, 0x1df7,
+ 0x0000, 0x0008, 0x0007, 0x1f00, 0x0008, 0x0000, 0x000e, 0x1f02,
+ 0x0008, 0x1f0e, 0x0010, 0x1f06, 0x001a, 0x1f06, 0x0002, 0x1f0f,
+ 0x0007, 0x1f50, 0x0017, 0x1f19, 0x0000, 0x004a, 0x0000, 0x004a,
+ 0x0000, 0x0056, 0x0003, 0x1f72, 0x0000, 0x0064, 0x0000, 0x0064,
+ 0x0000, 0x0080, 0x0000, 0x0080, 0x0000, 0x0070, 0x0000, 0x0070,
+ 0x0000, 0x007e, 0x0000, 0x007e, 0x0028, 0x1f1e, 0x000c, 0x1f06,
+ 0x0000, 0x0000, 0x0000, 0x0009, 0x000f, 0x0000, 0x000d, 0x1fb3,
+ 0x000d, 0x1f44, 0x0008, 0x1fcd, 0x0006, 0x03f2, 0x0015, 0x1fbb,
+ 0x014e, 0x0587, 0x0000, 0xffe4, 0x0021, 0x0000, 0x0000, 0xfff0,
+ 0x000f, 0x2170, 0x000a, 0x0238, 0x0346, 0x0587, 0x0000, 0xffe6,
+ 0x0019, 0x24d0, 0x0746, 0x0587, 0x0026, 0x0561, 0x000b, 0x057e,
+ 0x0004, 0x012f, 0x0000, 0xd5d5, 0x0000, 0xd5d8, 0x000c, 0x022e,
+ 0x000e, 0x03f8, 0x006e, 0x1e33, 0x0011, 0x0000, 0x0000, 0xe3a0,
+ 0x0025, 0x2d00, 0x17f2, 0x0587, 0x6129, 0x2d26, 0x002e, 0x0201,
+ 0x002a, 0x1def, 0x0098, 0xa5b7, 0x0040, 0x1dff, 0x000e, 0x0368,
+ 0x000d, 0x022b, 0x034c, 0x2184, 0x5469, 0x2d26, 0x007f, 0x0061,
+ 0x0040, 0x0000,
+ };
+
+ /* Simple LZ decoder */
+ const u16 *in_next = upcase_compressed;
+ for (u32 i = 0; i < ARRAY_LEN(upcase); ) {
+ u16 length = *in_next++;
+ u16 src_pos = *in_next++;
+ if (length == 0) {
+ /* Literal */
+ upcase[i++] = src_pos;
+ } else {
+ /* Match */
+ do {
+ upcase[i++] = upcase[src_pos++];
+ } while (--length);
+ }
+ }
+
+ /* Delta filter */
+ for (u32 i = 0; i < ARRAY_LEN(upcase); i++)
+ upcase[i] += i;
+
+#if 0
+ /* Sanity checks */
+ wimlib_assert(upcase['a'] == 'A');
+ wimlib_assert(upcase['A'] == 'A');
+ wimlib_assert(upcase['z'] == 'Z');
+ wimlib_assert(upcase['Z'] == 'Z');
+ wimlib_assert(upcase['1'] == '1');
+ wimlib_assert(upcase[0x00e9] == 0x00c9); /* Latin letter e, with acute accent */
+ wimlib_assert(upcase[0x00c9] == 0x00c9);
+ wimlib_assert(upcase[0x03c1] == 0x03a1); /* Greek letter rho */
+ wimlib_assert(upcase[0x03a1] == 0x03a1);
+ wimlib_assert(upcase[0x0436] == 0x0416); /* Cyrillic letter zhe */
+ wimlib_assert(upcase[0x0416] == 0x0416);
+ wimlib_assert(upcase[0x0567] == 0x0537); /* Armenian letter eh */
+ wimlib_assert(upcase[0x0537] == 0x0537);
+ wimlib_assert(upcase[0x24d0] == 0x24b6); /* Circled Latin letter A
+ (is that a real character???) */
+ wimlib_assert(upcase[0x24b6] == 0x24b6);
+ wimlib_assert(upcase[0x2603] == 0x2603); /* Note to self: Upper case
+ snowman symbol does not
+ exist. */
+#endif
+}
+
+/* Compare UTF-16LE strings case-sensitively (%ignore_case == false) or
+ * case-insensitively (%ignore_case == true).
+ *
+ * This is implemented using the default upper-case table used by NTFS. It does
+ * not handle all possible cases allowed by UTF-16LE. For example, different
+ * normalizations of the same sequence of "characters" are not considered equal.
+ * It hopefully does the right thing most of the time though. */
+int
+cmp_utf16le_strings(const utf16lechar *s1, size_t n1,
+ const utf16lechar *s2, size_t n2,
+ bool ignore_case)
+{
+ size_t n = min(n1, n2);
+
+ if (ignore_case) {
+ for (size_t i = 0; i < n; i++) {
+ u16 c1 = upcase[le16_to_cpu(s1[i])];
+ u16 c2 = upcase[le16_to_cpu(s2[i])];
+ if (c1 != c2)
+ return (c1 < c2) ? -1 : 1;
+ }
+ } else {
+ for (size_t i = 0; i < n; i++) {
+ u16 c1 = le16_to_cpu(s1[i]);
+ u16 c2 = le16_to_cpu(s2[i]);
+ if (c1 != c2)
+ return (c1 < c2) ? -1 : 1;
+ }
+ }
+ if (n1 == n2)
+ return 0;
+ return (n1 < n2) ? -1 : 1;
+}
+
+/* Like cmp_utf16le_strings(), but assumes the strings are null terminated. */
+int
+cmp_utf16le_strings_z(const utf16lechar *s1, const utf16lechar *s2,
+ bool ignore_case)
+{
+ if (ignore_case) {
+ for (;;) {
+ u16 c1 = upcase[le16_to_cpu(*s1)];
+ u16 c2 = upcase[le16_to_cpu(*s2)];
+ if (c1 != c2)
+ return (c1 < c2) ? -1 : 1;
+ if (c1 == 0)
+ return 0;
+ s1++, s2++;
+ }
+ } else {
+ while (*s1 && *s1 == *s2)
+ s1++, s2++;
+ if (*s1 == *s2)
+ return 0;
+ return (le16_to_cpu(*s1) < le16_to_cpu(*s2)) ? -1 : 1;
+ }
+}
+
+/* Duplicate a UTF-16LE string. The input string might not be null terminated
+ * and might be misaligned, but the returned string is guaranteed to be null
+ * terminated and properly aligned. */
+utf16lechar *
+utf16le_dupz(const void *ustr, size_t usize)
+{
+ utf16lechar *dup = MALLOC(usize + sizeof(utf16lechar));
+ if (dup) {
+ memcpy(dup, ustr, usize);
+ dup[usize / sizeof(utf16lechar)] = 0;
+ }
+ return dup;
+}
+
+/* Duplicate a null-terminated UTF-16LE string. */
+utf16lechar *
+utf16le_dup(const utf16lechar *ustr)
+{
+ const utf16lechar *p = ustr;
+ while (*p++)
+ ;
+ return memdup(ustr, (const u8 *)p - (const u8 *)ustr);
+}
+
+/* Return the length, in bytes, of a UTF-null terminated UTF-16 string,
+ * excluding the null terminator. */
+size_t
+utf16le_len_bytes(const utf16lechar *s)
+{
+ const utf16lechar *p = s;
+ while (*p)
+ p++;
+ return (p - s) * sizeof(utf16lechar);
+}
+
+/* Return the length, in UTF-16 coding units, of a UTF-null terminated UTF-16
+ * string, excluding the null terminator. */
+size_t
+utf16le_len_chars(const utf16lechar *s)
+{
+ return utf16le_len_bytes(s) / sizeof(utf16lechar);
+}
git://wimlib.net / wimlib / blobdiff