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1079 lines
25 KiB
1079 lines
25 KiB
/* |
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* Copyright (c) 2007 Vreixo Formoso |
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* Copyright (c) 2007 Mario Danic |
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* |
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* This file is part of the libisofs project; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. See COPYING file for details. |
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*/ |
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|
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#include "util.h" |
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#include "error.h" |
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|
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#include <stdlib.h> |
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#include <wchar.h> |
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#include <iconv.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <ctype.h> |
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#include <stdio.h> |
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#include <limits.h> |
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#include <locale.h> |
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#include <langinfo.h> |
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|
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/* for eaccess, defined in unistd.h */ |
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#define __USE_GNU |
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#include <unistd.h> |
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inline int div_up(unsigned int n, unsigned int div) |
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{ |
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return (n + div - 1) / div; |
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} |
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inline int round_up(unsigned int n, unsigned int mul) |
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{ |
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return div_up(n, mul) * mul; |
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} |
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int int_pow(int base, int power) |
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{ |
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int result = 1; |
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while (--power >= 0) { |
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result *= base; |
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} |
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return result; |
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} |
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int strconv(const char *str, const char *icharset, const char *ocharset, |
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char **output) |
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{ |
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size_t inbytes; |
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size_t outbytes; |
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size_t n; |
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iconv_t conv; |
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char *out; |
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char *src; |
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char *ret; |
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inbytes = strlen(str); |
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outbytes = (inbytes + 1) * MB_LEN_MAX; |
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out = alloca(outbytes); |
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if (out == NULL) { |
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return ISO_MEM_ERROR; |
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} |
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conv = iconv_open(ocharset, icharset); |
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if (conv == (iconv_t)(-1)) { |
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return ISO_CHARSET_CONV_ERROR; |
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} |
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src = (char *)str; |
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ret = (char *)out; |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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if (n == -1) { |
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/* error */ |
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iconv_close(conv); |
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return ISO_CHARSET_CONV_ERROR; |
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} |
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*ret = '\0'; |
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iconv_close(conv); |
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*output = malloc(ret - out + 1); |
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if (*output == NULL) { |
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return ISO_MEM_ERROR; |
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} |
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memcpy(*output, out, ret - out + 1); |
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return ISO_SUCCESS; |
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} |
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/** |
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* Convert a str in a specified codeset to WCHAR_T. |
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* The result must be free() when no more needed |
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* |
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* @return |
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* 1 success, < 0 error |
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*/ |
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static |
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int str2wchar(const char *icharset, const char *input, wchar_t **output) |
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{ |
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iconv_t conv; |
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size_t inbytes; |
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size_t outbytes; |
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char *ret; |
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char *src; |
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wchar_t *wstr; |
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size_t n; |
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if (icharset == NULL || input == NULL || output == NULL) { |
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return ISO_NULL_POINTER; |
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} |
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conv = iconv_open("WCHAR_T", icharset); |
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if (conv == (iconv_t)-1) { |
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return ISO_CHARSET_CONV_ERROR; |
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} |
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inbytes = strlen(input); |
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outbytes = (inbytes + 1) * sizeof(wchar_t); |
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/* we are sure that numchars <= inbytes */ |
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wstr = malloc(outbytes); |
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if (wstr == NULL) { |
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return ISO_MEM_ERROR; |
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} |
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ret = (char *)wstr; |
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src = (char *)input; |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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while (n == -1) { |
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if (errno == E2BIG) { |
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/* error, should never occur */ |
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iconv_close(conv); |
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free(wstr); |
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return ISO_CHARSET_CONV_ERROR; |
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} else { |
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wchar_t *wret; |
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/* |
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* Invalid input string charset. |
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* This can happen if input is in fact encoded in a charset |
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* different than icharset. |
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* We can't do anything better than replace by "_" and continue. |
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*/ |
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/* TODO we need a way to report this */ |
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/* printf("String %s is not encoded in %s\n", str, codeset); */ |
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inbytes--; |
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src++; |
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wret = (wchar_t*) ret; |
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*wret++ = (wchar_t) '_'; |
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ret = (char *) wret; |
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outbytes -= sizeof(wchar_t); |
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if (!inbytes) |
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break; |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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} |
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} |
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iconv_close(conv); |
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*( (wchar_t *)ret )='\0'; |
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*output = wstr; |
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return ISO_SUCCESS; |
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} |
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int str2ascii(const char *icharset, const char *input, char **output) |
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{ |
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int result; |
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wchar_t *wsrc_; |
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char *ret; |
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char *ret_; |
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char *src; |
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iconv_t conv; |
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size_t numchars; |
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size_t outbytes; |
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size_t inbytes; |
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size_t n; |
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if (icharset == NULL || input == NULL || output == NULL) { |
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return ISO_NULL_POINTER; |
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} |
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/* convert the string to a wide character string. Note: outbytes |
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* is in fact the number of characters in the string and doesn't |
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* include the last NULL character. |
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*/ |
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result = str2wchar(icharset, input, &wsrc_); |
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if (result < 0) { |
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return result; |
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} |
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src = (char *)wsrc_; |
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numchars = wcslen(wsrc_); |
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inbytes = numchars * sizeof(wchar_t); |
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ret_ = malloc(numchars + 1); |
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if (ret_ == NULL) { |
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return ISO_MEM_ERROR; |
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} |
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outbytes = numchars; |
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ret = ret_; |
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/* initialize iconv */ |
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conv = iconv_open("ASCII", "WCHAR_T"); |
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if (conv == (iconv_t)-1) { |
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free(wsrc_); |
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free(ret_); |
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return ISO_CHARSET_CONV_ERROR; |
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} |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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while (n == -1) { |
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/* The destination buffer is too small. Stops here. */ |
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if (errno == E2BIG) |
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break; |
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/* An incomplete multi bytes sequence was found. We |
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* can't do anything here. That's quite unlikely. */ |
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if (errno == EINVAL) |
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break; |
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/* The last possible error is an invalid multi bytes |
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* sequence. Just replace the character with a "_". |
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* Probably the character doesn't exist in ascii like |
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* "é, è, à, ç, ..." in French. */ |
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*ret++ = '_'; |
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outbytes--; |
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if (!outbytes) |
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break; |
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/* There was an error with one character but some other remain |
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* to be converted. That's probably a multibyte character. |
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* See above comment. */ |
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src += sizeof(wchar_t); |
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inbytes -= sizeof(wchar_t); |
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if (!inbytes) |
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break; |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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} |
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iconv_close(conv); |
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*ret='\0'; |
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free(wsrc_); |
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*output = ret_; |
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return ISO_SUCCESS; |
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} |
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static |
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void set_ucsbe(uint16_t *ucs, char c) |
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{ |
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char *v = (char*)ucs; |
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v[0] = (char)0; |
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v[1] = c; |
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} |
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/** |
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* @return |
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* -1, 0, 1 if *ucs <, == or > than c |
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*/ |
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static |
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int cmp_ucsbe(const uint16_t *ucs, char c) |
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{ |
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char *v = (char*)ucs; |
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if (v[0] != 0) { |
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return 1; |
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} else if (v[1] == c) { |
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return 0; |
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} else { |
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return (uint8_t)c > (uint8_t)v[1] ? -1 : 1; |
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} |
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} |
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int str2ucs(const char *icharset, const char *input, uint16_t **output) |
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{ |
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int result; |
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wchar_t *wsrc_; |
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char *src; |
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char *ret; |
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char *ret_; |
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iconv_t conv; |
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size_t numchars; |
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size_t outbytes; |
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size_t inbytes; |
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size_t n; |
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if (icharset == NULL || input == NULL || output == NULL) { |
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return ISO_NULL_POINTER; |
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} |
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/* convert the string to a wide character string. Note: outbytes |
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* is in fact the number of characters in the string and doesn't |
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* include the last NULL character. |
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*/ |
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result = str2wchar(icharset, input, &wsrc_); |
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if (result < 0) { |
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return result; |
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} |
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src = (char *)wsrc_; |
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numchars = wcslen(wsrc_); |
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inbytes = numchars * sizeof(wchar_t); |
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ret_ = malloc((numchars+1) * sizeof(uint16_t)); |
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if (ret_ == NULL) { |
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return ISO_MEM_ERROR; |
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} |
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outbytes = numchars * sizeof(uint16_t); |
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ret = ret_; |
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/* initialize iconv */ |
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conv = iconv_open("UCS-2BE", "WCHAR_T"); |
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if (conv == (iconv_t)-1) { |
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free(wsrc_); |
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free(ret_); |
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return ISO_CHARSET_CONV_ERROR; |
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} |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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while (n == -1) { |
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/* The destination buffer is too small. Stops here. */ |
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if (errno == E2BIG) |
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break; |
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|
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/* An incomplete multi bytes sequence was found. We |
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* can't do anything here. That's quite unlikely. */ |
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if (errno == EINVAL) |
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break; |
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/* The last possible error is an invalid multi bytes |
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* sequence. Just replace the character with a "_". |
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* Probably the character doesn't exist in UCS */ |
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set_ucsbe((uint16_t*) ret, '_'); |
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ret += sizeof(uint16_t); |
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outbytes -= sizeof(uint16_t); |
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if (!outbytes) |
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break; |
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/* There was an error with one character but some other remain |
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* to be converted. That's probably a multibyte character. |
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* See above comment. */ |
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src += sizeof(wchar_t); |
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inbytes -= sizeof(wchar_t); |
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if (!inbytes) |
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break; |
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n = iconv(conv, &src, &inbytes, &ret, &outbytes); |
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} |
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iconv_close(conv); |
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/* close the ucs string */ |
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set_ucsbe((uint16_t*) ret, '\0'); |
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free(wsrc_); |
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*output = (uint16_t*)ret_; |
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return ISO_SUCCESS; |
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} |
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static int valid_d_char(char c) |
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{ |
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return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c == '_'); |
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} |
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static int valid_a_char(char c) |
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{ |
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return (c >= ' ' && c <= '"') || (c >= '%' && c <= '?') || |
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(c >= 'A' && c <= 'Z') || (c == '_'); |
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} |
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static int valid_j_char(uint16_t c) |
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{ |
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return cmp_ucsbe(&c, ' ') != -1 && cmp_ucsbe(&c, '*') && cmp_ucsbe(&c, '/') |
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&& cmp_ucsbe(&c, ':') && cmp_ucsbe(&c, ';') && cmp_ucsbe(&c, '?') |
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&& cmp_ucsbe(&c, '\\'); |
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} |
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static |
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char *iso_dirid(const char *src, int size) |
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{ |
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size_t len, i; |
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char name[32]; |
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len = strlen(src); |
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if (len > size) { |
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len = size; |
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} |
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for (i = 0; i < len; i++) { |
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char c= toupper(src[i]); |
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name[i] = valid_d_char(c) ? c : '_'; |
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} |
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name[len] = '\0'; |
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return strdup(name); |
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} |
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char *iso_1_dirid(const char *src) |
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{ |
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return iso_dirid(src, 8); |
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} |
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char *iso_2_dirid(const char *src) |
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{ |
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return iso_dirid(src, 31); |
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} |
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char *iso_1_fileid(const char *src) |
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{ |
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char *dot; /* Position of the last dot in the filename, will be used |
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* to calculate lname and lext. */ |
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int lname, lext, pos, i; |
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char dest[13]; /* 13 = 8 (name) + 1 (.) + 3 (ext) + 1 (\0) */ |
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if (src == NULL) { |
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return NULL; |
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} |
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dot = strrchr(src, '.'); |
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lext = dot ? strlen(dot + 1) : 0; |
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lname = strlen(src) - lext - (dot ? 1 : 0); |
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/* If we can't build a filename, return NULL. */ |
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if (lname == 0 && lext == 0) { |
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return NULL; |
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} |
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pos = 0; |
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|
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/* Convert up to 8 characters of the filename. */ |
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for (i = 0; i < lname && i < 8; i++) { |
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char c= toupper(src[i]); |
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dest[pos++] = valid_d_char(c) ? c : '_'; |
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} |
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/* This dot is mandatory, even if there is no extension. */ |
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dest[pos++] = '.'; |
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|
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/* Convert up to 3 characters of the extension, if any. */ |
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for (i = 0; i < lext && i < 3; i++) { |
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char c= toupper(src[lname + 1 + i]); |
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dest[pos++] = valid_d_char(c) ? c : '_'; |
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} |
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dest[pos] = '\0'; |
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return strdup(dest); |
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} |
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char *iso_2_fileid(const char *src) |
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{ |
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char *dot; |
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int lname, lext, lnname, lnext, pos, i; |
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char dest[32]; /* 32 = 30 (name + ext) + 1 (.) + 1 (\0) */ |
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if (src == NULL) { |
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return NULL; |
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} |
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dot = strrchr(src, '.'); |
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|
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/* |
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* Since the maximum length can be divided freely over the name and |
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* extension, we need to calculate their new lengths (lnname and |
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* lnext). If the original filename is too long, we start by trimming |
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* the extension, but keep a minimum extension length of 3. |
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*/ |
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if (dot == NULL || *(dot + 1) == '\0') { |
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lname = strlen(src); |
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lnname = (lname > 30) ? 30 : lname; |
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lext = lnext = 0; |
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} else { |
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lext = strlen(dot + 1); |
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lname = strlen(src) - lext - 1; |
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lnext = (strlen(src) > 31 && lext > 3) ? (lname < 27 ? 30 - lname : 3) |
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: lext; |
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lnname = (strlen(src) > 31) ? 30 - lnext : lname; |
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} |
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|
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if (lnname == 0 && lnext == 0) { |
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return NULL; |
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} |
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pos = 0; |
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|
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/* Convert up to lnname characters of the filename. */ |
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for (i = 0; i < lnname; i++) { |
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char c= toupper(src[i]); |
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|
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dest[pos++] = valid_d_char(c) ? c : '_'; |
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} |
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dest[pos++] = '.'; |
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|
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/* Convert up to lnext characters of the extension, if any. */ |
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for (i = 0; i < lnext; i++) { |
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char c= toupper(src[lname + 1 + i]); |
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|
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dest[pos++] = valid_d_char(c) ? c : '_'; |
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} |
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dest[pos] = '\0'; |
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return strdup(dest); |
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} |
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|
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/** |
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* Create a file/dir name suitable for an ISO image with relaxed constraints. |
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* |
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* @param len |
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* Max len for the name, without taken the "." into account. |
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* @param relaxed |
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* 0 only allow d-characters, 1 allow also lowe case chars, |
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* 2 allow all characters |
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* @param forcedot |
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* Whether to ensure that "." is added |
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*/ |
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char *iso_r_id(const char *src, size_t len, int relaxed, int forcedot) |
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{ |
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char *dot; |
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int lname, lext, lnname, lnext, pos, i; |
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char *dest = alloca(len + 1 + 1); |
|
|
|
if (src == NULL) { |
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return NULL; |
|
} |
|
|
|
dot = strrchr(src, '.'); |
|
|
|
/* |
|
* Since the maximum length can be divided freely over the name and |
|
* extension, we need to calculate their new lengths (lnname and |
|
* lnext). If the original filename is too long, we start by trimming |
|
* the extension, but keep a minimum extension length of 3. |
|
*/ |
|
if (dot == NULL || *(dot + 1) == '\0') { |
|
lname = strlen(src); |
|
lnname = (lname > len) ? len : lname; |
|
lext = lnext = 0; |
|
} else { |
|
lext = strlen(dot + 1); |
|
lname = strlen(src) - lext - 1; |
|
lnext = (strlen(src) > len + 1 && lext > 3) ? |
|
(lname < len - 3 ? len - lname : 3) |
|
: lext; |
|
lnname = (strlen(src) > len + 1) ? len - lnext : lname; |
|
} |
|
|
|
if (lnname == 0 && lnext == 0) { |
|
return NULL; |
|
} |
|
|
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pos = 0; |
|
|
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/* Convert up to lnname characters of the filename. */ |
|
for (i = 0; i < lnname; i++) { |
|
char c= src[i]; |
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if (relaxed == 2) { |
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/* all chars are allowed */ |
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dest[pos++] = c; |
|
} else if (valid_d_char(c)) { |
|
/* it is a valid char */ |
|
dest[pos++] = c; |
|
} else { |
|
c= toupper(src[i]); |
|
if (valid_d_char(c)) { |
|
if (relaxed) { |
|
/* lower chars are allowed */ |
|
dest[pos++] = src[i]; |
|
} else { |
|
dest[pos++] = c; |
|
} |
|
} else { |
|
dest[pos++] = '_'; |
|
} |
|
} |
|
} |
|
if (lnext > 0 || forcedot) { |
|
dest[pos++] = '.'; |
|
} |
|
|
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/* Convert up to lnext characters of the extension, if any. */ |
|
for (i = lname + 1; i < lname + 1 + lnext; i++) { |
|
char c= src[i]; |
|
if (relaxed == 2) { |
|
/* all chars are allowed */ |
|
dest[pos++] = c; |
|
} else if (valid_d_char(c)) { |
|
/* it is a valid char */ |
|
dest[pos++] = c; |
|
} else { |
|
c= toupper(src[i]); |
|
if (valid_d_char(c)) { |
|
if (relaxed) { |
|
/* lower chars are allowed */ |
|
dest[pos++] = src[i]; |
|
} else { |
|
dest[pos++] = c; |
|
} |
|
} else { |
|
dest[pos++] = '_'; |
|
} |
|
} |
|
} |
|
dest[pos] = '\0'; |
|
return strdup(dest); |
|
} |
|
|
|
uint16_t *iso_j_file_id(const uint16_t *src) |
|
{ |
|
uint16_t *dot; |
|
size_t lname, lext, lnname, lnext, pos, i; |
|
uint16_t dest[66]; /* 66 = 64 (name + ext) + 1 (.) + 1 (\0) */ |
|
|
|
if (src == NULL) { |
|
return NULL; |
|
} |
|
|
|
dot = ucsrchr(src, '.'); |
|
|
|
/* |
|
* Since the maximum length can be divided freely over the name and |
|
* extension, we need to calculate their new lengths (lnname and |
|
* lnext). If the original filename is too long, we start by trimming |
|
* the extension, but keep a minimum extension length of 3. |
|
*/ |
|
if (dot == NULL || cmp_ucsbe(dot + 1, '\0') == 0) { |
|
lname = ucslen(src); |
|
lnname = (lname > 64) ? 64 : lname; |
|
lext = lnext = 0; |
|
} else { |
|
lext = ucslen(dot + 1); |
|
lname = ucslen(src) - lext - 1; |
|
lnext = (ucslen(src) > 65 && lext > 3) ? (lname < 61 ? 64 - lname : 3) |
|
: lext; |
|
lnname = (ucslen(src) > 65) ? 64 - lnext : lname; |
|
} |
|
|
|
if (lnname == 0 && lnext == 0) { |
|
return NULL; |
|
} |
|
|
|
pos = 0; |
|
|
|
/* Convert up to lnname characters of the filename. */ |
|
for (i = 0; i < lnname; i++) { |
|
uint16_t c = src[i]; |
|
if (valid_j_char(c)) { |
|
dest[pos++] = c; |
|
} else { |
|
set_ucsbe(dest + pos, '_'); |
|
pos++; |
|
} |
|
} |
|
set_ucsbe(dest + pos, '.'); |
|
pos++; |
|
|
|
/* Convert up to lnext characters of the extension, if any. */ |
|
for (i = 0; i < lnext; i++) { |
|
uint16_t c = src[lname + 1 + i]; |
|
if (valid_j_char(c)) { |
|
dest[pos++] = c; |
|
} else { |
|
set_ucsbe(dest + pos, '_'); |
|
pos++; |
|
} |
|
} |
|
set_ucsbe(dest + pos, '\0'); |
|
return ucsdup(dest); |
|
} |
|
|
|
uint16_t *iso_j_dir_id(const uint16_t *src) |
|
{ |
|
size_t len, i; |
|
uint16_t dest[65]; /* 65 = 64 + 1 (\0) */ |
|
|
|
if (src == NULL) { |
|
return NULL; |
|
} |
|
|
|
len = ucslen(src); |
|
if (len > 64) { |
|
len = 64; |
|
} |
|
for (i = 0; i < len; i++) { |
|
uint16_t c = src[i]; |
|
if (valid_j_char(c)) { |
|
dest[i] = c; |
|
} else { |
|
set_ucsbe(dest + i, '_'); |
|
} |
|
} |
|
set_ucsbe(dest + len, '\0'); |
|
return ucsdup(dest); |
|
} |
|
|
|
size_t ucslen(const uint16_t *str) |
|
{ |
|
size_t i; |
|
|
|
for (i = 0; str[i]; i++) |
|
; |
|
return i; |
|
} |
|
|
|
uint16_t *ucsrchr(const uint16_t *str, char c) |
|
{ |
|
size_t len = ucslen(str); |
|
|
|
while (len-- > 0) { |
|
if (cmp_ucsbe(str + len, c) == 0) { |
|
return (uint16_t*)(str + len); |
|
} |
|
} |
|
return NULL; |
|
} |
|
|
|
uint16_t *ucsdup(const uint16_t *str) |
|
{ |
|
uint16_t *ret; |
|
size_t len = ucslen(str); |
|
|
|
ret = malloc(2 * (len + 1)); |
|
if (ret != NULL) { |
|
memcpy(ret, str, 2 * (len + 1)); |
|
} |
|
return ret; |
|
} |
|
|
|
/** |
|
* Although each character is 2 bytes, we actually compare byte-by-byte |
|
* (thats what the spec says). |
|
*/ |
|
int ucscmp(const uint16_t *s1, const uint16_t *s2) |
|
{ |
|
const char *s = (const char*)s1; |
|
const char *t = (const char*)s2; |
|
size_t len1 = ucslen(s1); |
|
size_t len2 = ucslen(s2); |
|
size_t i, len = MIN(len1, len2) * 2; |
|
|
|
for (i = 0; i < len; i++) { |
|
if (s[i] < t[i]) { |
|
return -1; |
|
} else if (s[i] > t[i]) { |
|
return 1; |
|
} |
|
} |
|
|
|
if (len1 < len2) |
|
return -1; |
|
else if (len1 > len2) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
uint16_t *ucsncpy(uint16_t *dest, const uint16_t *src, size_t n) |
|
{ |
|
n = MIN(n, ucslen(src) + 1); |
|
memcpy(dest, src, n*2); |
|
return dest; |
|
} |
|
|
|
int str2d_char(const char *icharset, const char *input, char **output) |
|
{ |
|
int ret; |
|
char *ascii; |
|
size_t len, i; |
|
|
|
if (output == NULL) { |
|
return ISO_MEM_ERROR; |
|
} |
|
|
|
/** allow NULL input */ |
|
if (input == NULL) { |
|
*output = NULL; |
|
return 0; |
|
} |
|
|
|
/* this checks for NULL parameters */ |
|
ret = str2ascii(icharset, input, &ascii); |
|
if (ret < 0) { |
|
*output = NULL; |
|
return ret; |
|
} |
|
|
|
len = strlen(ascii); |
|
|
|
for (i = 0; i < len; ++i) { |
|
char c= toupper(ascii[i]); |
|
ascii[i] = valid_d_char(c) ? c : '_'; |
|
} |
|
|
|
*output = ascii; |
|
return ISO_SUCCESS; |
|
} |
|
|
|
int str2a_char(const char *icharset, const char *input, char **output) |
|
{ |
|
int ret; |
|
char *ascii; |
|
size_t len, i; |
|
|
|
if (output == NULL) { |
|
return ISO_MEM_ERROR; |
|
} |
|
|
|
/** allow NULL input */ |
|
if (input == NULL) { |
|
*output = NULL; |
|
return 0; |
|
} |
|
|
|
/* this checks for NULL parameters */ |
|
ret = str2ascii(icharset, input, &ascii); |
|
if (ret < 0) { |
|
*output = NULL; |
|
return ret; |
|
} |
|
|
|
len = strlen(ascii); |
|
|
|
for (i = 0; i < len; ++i) { |
|
char c= toupper(ascii[i]); |
|
ascii[i] = valid_a_char(c) ? c : '_'; |
|
} |
|
|
|
*output = ascii; |
|
return ISO_SUCCESS; |
|
} |
|
|
|
void iso_lsb(uint8_t *buf, uint32_t num, int bytes) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < bytes; ++i) |
|
buf[i] = (num >> (8 * i)) & 0xff; |
|
} |
|
|
|
void iso_msb(uint8_t *buf, uint32_t num, int bytes) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < bytes; ++i) |
|
buf[bytes - 1 - i] = (num >> (8 * i)) & 0xff; |
|
} |
|
|
|
void iso_bb(uint8_t *buf, uint32_t num, int bytes) |
|
{ |
|
iso_lsb(buf, num, bytes); |
|
iso_msb(buf+bytes, num, bytes); |
|
} |
|
|
|
uint32_t iso_read_lsb(const uint8_t *buf, int bytes) |
|
{ |
|
int i; |
|
uint32_t ret = 0; |
|
|
|
for (i=0; i<bytes; i++) { |
|
ret += ((uint32_t) buf[i]) << (i*8); |
|
} |
|
return ret; |
|
} |
|
|
|
uint32_t iso_read_msb(const uint8_t *buf, int bytes) |
|
{ |
|
int i; |
|
uint32_t ret = 0; |
|
|
|
for (i=0; i<bytes; i++) { |
|
ret += ((uint32_t) buf[bytes-i-1]) << (i*8); |
|
} |
|
return ret; |
|
} |
|
|
|
uint32_t iso_read_bb(const uint8_t *buf, int bytes, int *error) |
|
{ |
|
uint32_t v1 = iso_read_lsb(buf, bytes); |
|
|
|
if (error) { |
|
uint32_t v2 = iso_read_msb(buf + bytes, bytes); |
|
if (v1 != v2) |
|
*error = 1; |
|
} |
|
return v1; |
|
} |
|
|
|
void iso_datetime_7(unsigned char *buf, time_t t) |
|
{ |
|
static int tzsetup = 0; |
|
int tzoffset; |
|
struct tm tm; |
|
|
|
if (!tzsetup) { |
|
tzset(); |
|
tzsetup = 1; |
|
} |
|
|
|
localtime_r(&t, &tm); |
|
|
|
buf[0] = tm.tm_year; |
|
buf[1] = tm.tm_mon + 1; |
|
buf[2] = tm.tm_mday; |
|
buf[3] = tm.tm_hour; |
|
buf[4] = tm.tm_min; |
|
buf[5] = tm.tm_sec; |
|
#ifdef HAVE_TM_GMTOFF |
|
tzoffset = tm.tm_gmtoff / 60 / 15; |
|
#else |
|
tzoffset = timezone / 60 / 15; |
|
#endif |
|
if (tzoffset > 52) |
|
tzoffset -= 101; |
|
buf[6] = tzoffset; |
|
} |
|
|
|
void iso_datetime_17(unsigned char *buf, time_t t) |
|
{ |
|
static int tzsetup = 0; |
|
static int tzoffset; |
|
struct tm tm; |
|
|
|
if (t == (time_t) - 1) { |
|
/* unspecified time */ |
|
memset(buf, '0', 16); |
|
buf[16] = 0; |
|
} else { |
|
if (!tzsetup) { |
|
tzset(); |
|
tzsetup = 1; |
|
} |
|
|
|
localtime_r(&t, &tm); |
|
|
|
sprintf((char*)&buf[0], "%04d", tm.tm_year + 1900); |
|
sprintf((char*)&buf[4], "%02d", tm.tm_mon + 1); |
|
sprintf((char*)&buf[6], "%02d", tm.tm_mday); |
|
sprintf((char*)&buf[8], "%02d", tm.tm_hour); |
|
sprintf((char*)&buf[10], "%02d", tm.tm_min); |
|
sprintf((char*)&buf[12], "%02d", MIN(59, tm.tm_sec)); |
|
memcpy(&buf[14], "00", 2); |
|
#ifdef HAVE_TM_GMTOFF |
|
tzoffset = tm.tm_gmtoff / 60 / 15; |
|
#else |
|
tzoffset = timezone / 60 / 15; |
|
#endif |
|
if (tzoffset > 52) |
|
tzoffset -= 101; |
|
buf[16] = tzoffset; |
|
} |
|
} |
|
|
|
time_t iso_datetime_read_7(const uint8_t *buf) |
|
{ |
|
struct tm tm; |
|
|
|
tm.tm_year = buf[0]; |
|
tm.tm_mon = buf[1] - 1; |
|
tm.tm_mday = buf[2]; |
|
tm.tm_hour = buf[3]; |
|
tm.tm_min = buf[4]; |
|
tm.tm_sec = buf[5]; |
|
return timegm(&tm) - buf[6] * 60 * 15; |
|
} |
|
|
|
time_t iso_datetime_read_17(const uint8_t *buf) |
|
{ |
|
struct tm tm; |
|
|
|
sscanf((char*)&buf[0], "%4d", &tm.tm_year); |
|
sscanf((char*)&buf[4], "%2d", &tm.tm_mon); |
|
sscanf((char*)&buf[6], "%2d", &tm.tm_mday); |
|
sscanf((char*)&buf[8], "%2d", &tm.tm_hour); |
|
sscanf((char*)&buf[10], "%2d", &tm.tm_min); |
|
sscanf((char*)&buf[12], "%2d", &tm.tm_sec); |
|
tm.tm_year -= 1900; |
|
tm.tm_mon -= 1; |
|
|
|
return timegm(&tm) - buf[16] * 60 * 15; |
|
} |
|
|
|
/** |
|
* Check whether the caller process has read access to the given local file. |
|
* |
|
* @return |
|
* 1 on success (i.e, the process has read access), < 0 on error |
|
* (including ISO_FILE_ACCESS_DENIED on access denied to the specified file |
|
* or any directory on the path). |
|
*/ |
|
int iso_eaccess(const char *path) |
|
{ |
|
// TODO replace non-standard eaccess with our own implementation |
|
if (eaccess(path, R_OK) != 0) { |
|
int err; |
|
|
|
/* error, choose an appropriate return code */ |
|
switch (errno) { |
|
case EACCES: |
|
err = ISO_FILE_ACCESS_DENIED; |
|
break; |
|
case ENOTDIR: |
|
case ENAMETOOLONG: |
|
case ELOOP: |
|
err = ISO_FILE_BAD_PATH; |
|
break; |
|
case ENOENT: |
|
err = ISO_FILE_DOESNT_EXIST; |
|
break; |
|
case EFAULT: |
|
case ENOMEM: |
|
err = ISO_MEM_ERROR; |
|
break; |
|
default: |
|
err = ISO_FILE_ERROR; |
|
break; |
|
} |
|
return err; |
|
} |
|
return ISO_SUCCESS; |
|
} |
|
|
|
char *strcopy(const char *buf, size_t len) |
|
{ |
|
char *str; |
|
|
|
str = malloc((len + 1) * sizeof(char)); |
|
if (str == NULL) { |
|
return NULL; |
|
} |
|
strncpy(str, buf, len); |
|
str[len] = '\0'; |
|
|
|
/* remove trailing spaces */ |
|
for (len = len-1; str[len] == ' ' && len > 0; --len) |
|
str[len] = '\0'; |
|
|
|
return str; |
|
} |
|
|
|
char *ucs2str(const char *buf, size_t len) |
|
{ |
|
size_t outbytes, inbytes; |
|
char *str, *src, *out; |
|
iconv_t conv; |
|
size_t n; |
|
|
|
inbytes = len; |
|
|
|
outbytes = (inbytes+1) * MB_LEN_MAX; |
|
|
|
/* ensure enought space */ |
|
out = alloca(outbytes); |
|
|
|
/* convert to local charset */ |
|
setlocale(LC_CTYPE, ""); |
|
conv = iconv_open(nl_langinfo(CODESET), "UCS-2BE"); |
|
if (conv == (iconv_t)(-1)) { |
|
return NULL; |
|
} |
|
src = (char *)buf; |
|
str = (char *)out; |
|
|
|
n = iconv(conv, &src, &inbytes, &str, &outbytes); |
|
if (n == -1) { |
|
/* error */ |
|
iconv_close(conv); |
|
return NULL; |
|
} |
|
iconv_close(conv); |
|
*str = '\0'; |
|
|
|
/* remove trailing spaces */ |
|
for (len = strlen(out) - 1; out[len] == ' ' && len > 0; --len) |
|
out[len] = '\0'; |
|
return strdup(out); |
|
}
|
|
|