| /* |
| * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| #include <stdio.h> |
| #include <stddef.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <locale.h> |
| #include <langinfo.h> |
| #include <iconv.h> |
| |
| /* Routines to convert back and forth between Platform Encoding and UTF-8 */ |
| |
| /* Error and assert macros */ |
| #define UTF_ERROR(m) utfError(__FILE__, __LINE__, m) |
| #define UTF_ASSERT(x) ( (x)==0 ? UTF_ERROR("ASSERT ERROR " #x) : (void)0 ) |
| #define UTF_DEBUG(x) |
| |
| /* Global variables */ |
| static iconv_t iconvToPlatform = (iconv_t)-1; |
| static iconv_t iconvFromPlatform = (iconv_t)-1; |
| |
| /* |
| * Error handler |
| */ |
| static void |
| utfError(char *file, int line, char *message) |
| { |
| (void)fprintf(stderr, "UTF ERROR [\"%s\":%d]: %s\n", file, line, message); |
| abort(); |
| } |
| |
| /* |
| * Initialize all utf processing. |
| */ |
| static void |
| utfInitialize(void) |
| { |
| char *codeset; |
| |
| /* Set the locale from the environment */ |
| (void)setlocale(LC_ALL, ""); |
| |
| /* Get the codeset name */ |
| codeset = (char*)nl_langinfo(CODESET); |
| if ( codeset == NULL || codeset[0] == 0 ) { |
| UTF_DEBUG(("NO codeset returned by nl_langinfo(CODESET)\n")); |
| return; |
| } |
| |
| UTF_DEBUG(("Codeset = %s\n", codeset)); |
| |
| /* If we don't need this, skip it */ |
| if (strcmp(codeset, "UTF-8") == 0 || strcmp(codeset, "utf8") == 0 ) { |
| UTF_DEBUG(("NO iconv() being used because it is not needed\n")); |
| return; |
| } |
| |
| /* Open conversion descriptors */ |
| iconvToPlatform = iconv_open(codeset, "UTF-8"); |
| if ( iconvToPlatform == (iconv_t)-1 ) { |
| UTF_ERROR("Failed to complete iconv_open() setup"); |
| } |
| iconvFromPlatform = iconv_open("UTF-8", codeset); |
| if ( iconvFromPlatform == (iconv_t)-1 ) { |
| UTF_ERROR("Failed to complete iconv_open() setup"); |
| } |
| } |
| |
| /* |
| * Terminate all utf processing |
| */ |
| static void |
| utfTerminate(void) |
| { |
| if ( iconvFromPlatform!=(iconv_t)-1 ) { |
| (void)iconv_close(iconvFromPlatform); |
| } |
| if ( iconvToPlatform!=(iconv_t)-1 ) { |
| (void)iconv_close(iconvToPlatform); |
| } |
| iconvToPlatform = (iconv_t)-1; |
| iconvFromPlatform = (iconv_t)-1; |
| } |
| |
| /* |
| * Do iconv() conversion. |
| * Returns length or -1 if output overflows. |
| */ |
| static int |
| iconvConvert(iconv_t ic, char *bytes, int len, char *output, int outputMaxLen) |
| { |
| int outputLen = 0; |
| |
| UTF_ASSERT(bytes); |
| UTF_ASSERT(len>=0); |
| UTF_ASSERT(output); |
| UTF_ASSERT(outputMaxLen>len); |
| |
| output[0] = 0; |
| outputLen = 0; |
| |
| if ( ic != (iconv_t)-1 ) { |
| int returnValue; |
| size_t inLeft; |
| size_t outLeft; |
| char *inbuf; |
| char *outbuf; |
| |
| inbuf = bytes; |
| outbuf = output; |
| inLeft = len; |
| outLeft = outputMaxLen; |
| returnValue = iconv(ic, (void*)&inbuf, &inLeft, &outbuf, &outLeft); |
| if ( returnValue >= 0 && inLeft==0 ) { |
| outputLen = outputMaxLen-outLeft; |
| output[outputLen] = 0; |
| return outputLen; |
| } |
| |
| /* Failed to do the conversion */ |
| return -1; |
| } |
| |
| /* Just copy bytes */ |
| outputLen = len; |
| (void)memcpy(output, bytes, len); |
| output[len] = 0; |
| return outputLen; |
| } |
| |
| /* |
| * Convert UTF-8 to Platform Encoding. |
| * Returns length or -1 if output overflows. |
| */ |
| static int |
| utf8ToPlatform(char *utf8, int len, char *output, int outputMaxLen) |
| { |
| return iconvConvert(iconvToPlatform, utf8, len, output, outputMaxLen); |
| } |
| |
| /* |
| * Convert Platform Encoding to UTF-8. |
| * Returns length or -1 if output overflows. |
| */ |
| static int |
| platformToUtf8(char *str, int len, char *output, int outputMaxLen) |
| { |
| return iconvConvert(iconvFromPlatform, str, len, output, outputMaxLen); |
| } |
| |
| int |
| convertUft8ToPlatformString(char* utf8_str, int utf8_len, char* platform_str, int platform_len) { |
| if (iconvToPlatform == (iconv_t)-1) { |
| utfInitialize(); |
| } |
| return utf8ToPlatform(utf8_str, utf8_len, platform_str, platform_len); |
| } |