352 lines
8.2 KiB
C
352 lines
8.2 KiB
C
/*
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******************************************************************************
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*
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* Copyright (C) 1998-2001, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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******************************************************************************
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*
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* File ufile.c
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*
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* Modification History:
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*
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* Date Name Description
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* 11/19/98 stephen Creation.
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* 03/12/99 stephen Modified for new C API.
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* 06/16/99 stephen Changed T_LocaleBundle to u_locbund
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* 07/19/99 stephen Fixed to use ucnv's default codepage.
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******************************************************************************
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*/
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#include "uhash.h"
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#include "unicode/ustdio.h"
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#include "ufile.h"
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#include "unicode/uloc.h"
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#include "loccache.h"
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#include "unicode/ures.h"
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#include "unicode/ucnv.h"
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#include <string.h>
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#include <stdlib.h>
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/* the data in the following two functions should REALLY be somewhere else */
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/* convert from a country code (only the first 2 chars are significant) */
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/* to an IBM codepage */
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/* TODO: We should consider using uprv_defaultCodePageForLocale() instead of this table
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(less to maintain when the ISO-639 standard changes */
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/* thanks to http://czyborra.com/charsets/iso8859.htm for most of this info */
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static const char *ufile_locale2codepage[] = {
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"af", "latin-1", /* Afrikaans */
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"ar", "ibm-1256", /* arabic */
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"be", "ibm-915" , /* Byelorussian */
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"bg", "ibm-915" , /* Bulgarian */
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"ca", "latin-1" , /* catalan */
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"cs", "ibm-912" , /* Czech */
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"da", "latin-1" , /* danish */
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"de", "latin-1" , /* german */
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"el", "ibm-813" , /* Greek */
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"en", "latin-1" , /* English */
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"eo", "ibm-913" , /* Esperanto */
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"es", "latin-1" , /* Spanish */
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"eu", "latin-1" , /* basque */
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"et", "ibm-914" , /* Estonian */
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"fi", "latin-1" , /* Finnish */
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"fo", "latin-1" , /* faroese */
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"fr", "latin-1" , /* French */
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"ga", "latin-1" , /* Irish (Gaelic) */
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"gd", "latin-1" , /* Scottish */
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"hr", "ibm-912" , /* Croatian */
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"hu", "ibm-912" , /* Hungarian */
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"in", "latin-1" , /* Indonesian */
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"is", "latin-1" , /* Icelandic */
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"it", "latin-1" , /* Italian */
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"iw", "ibm-916", /* hebrew */
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"ja", "ibm-943", /* Japanese */
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"ji", "ibm-916", /* Yiddish */
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"kl", "ibm-914", /* Greenlandic */
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"ko", "ibm-949", /* korean */
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"lt", "ibm-914", /* Lithuanian */
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"lv", "ibm-914", /* latvian (lettish) */
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"mk", "ibm-915" , /* Macedonian */
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"mt", "ibm-1208" , /* Maltese [UTF8] */
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"nl", "latin-1" , /* dutch */
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"no", "latin-1" , /* Norwegian */
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"pl", "ibm-912" , /* Polish */
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"pt", "latin-1" , /* Portugese */
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"rm", "latin-1" , /* Rhaeto-romanic (?) */
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"ro", "ibm-912" , /* Romanian */
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"ru", "ibm-878" , /* Russian */
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"sk", "ibm-912" , /* Slovak */
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"sl", "ibm-912" , /* Slovenian */
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"sq", "latin-1" , /* albanian */
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"sr", "ibm-915" , /* Serbian */
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"sv", "latin-1" , /* Swedish */
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"sw", "latin-1" , /* Swahili */
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"th", "ibm-1208" , /* Thai - UTF8 */
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"tr", "ibm-920", /* Turkish */
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"uk", "ibm-915" , /* pre 1990 Ukranian (?) */
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"zh", "Big-5", /* Chinese */
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0, 0
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};
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static const char*
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ufile_lookup_codepage(const char *locale)
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{
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int32_t i;
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for(i = 0; ufile_locale2codepage[i]; i+= 2)
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if( ! strncmp(ufile_locale2codepage[i], locale, 2))
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return ufile_locale2codepage[i + 1];
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return 0;
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}
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static UBool hasICUData(const char *cp) {
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UErrorCode status = U_ZERO_ERROR;
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UConverter *cnv = NULL;
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#if 0
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UResourceBundle *r = NULL;
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r = ures_open(NULL, NULL, &status);
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if(U_FAILURE(status)) {
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return FALSE;
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} else {
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ures_close(r);
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}
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#endif
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cnv = ucnv_open(cp, &status);
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if(cnv == NULL) {
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return FALSE;
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} else {
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ucnv_close(cnv);
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}
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return TRUE;
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}
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UFILE*
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u_fopen(const char *filename,
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const char *perm,
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const char *locale,
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const char *codepage)
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{
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UErrorCode status = U_ZERO_ERROR;
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UBool useSysCP = (UBool)(locale == 0 && codepage == 0);
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UFILE *result = (UFILE*) malloc(sizeof(UFILE));
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if(result == 0)
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return 0;
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result->fFile = fopen(filename, perm);
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if(result->fFile == 0) {
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free(result);
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return 0;
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}
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result->fOwnFile = TRUE;
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/* if locale is 0, use the default */
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if(locale == 0)
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locale = uloc_getDefault();
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result->fBundle = u_loccache_get(locale);
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if(result->fBundle == 0) {
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fclose(result->fFile);
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free(result);
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return 0;
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}
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result->fOwnBundle = FALSE;
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result->fUCPos = result->fUCBuffer;
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result->fUCLimit = result->fUCBuffer;
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/* if the codepage is 0, use the default for the locale */
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if(codepage == 0) {
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codepage = ufile_lookup_codepage(locale);
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/* if the codepage is still 0, the default codepage will be used */
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}
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/* if both locale and codepage are 0, use the system default codepage */
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else if(useSysCP)
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codepage = 0;
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result->fConverter = ucnv_open(codepage, &status);
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if(U_FAILURE(status) || result->fConverter == 0) {
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fclose(result->fFile);
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free(result);
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return 0;
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}
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return result;
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}
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UFILE*
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u_finit(FILE *f,
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const char *locale,
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const char *codepage)
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{
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UErrorCode status = U_ZERO_ERROR;
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UBool useSysCP = (UBool)(locale == NULL && codepage == NULL);
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UFILE *result = (UFILE*) malloc(sizeof(UFILE));
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if(result == 0)
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return 0;
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#ifdef WIN32
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result->fFile = &_iob[_fileno(f)];
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#else
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result->fFile = f;
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#endif
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result->fOwnFile = FALSE;
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result->fOwnBundle = FALSE;
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result->fUCPos = result->fUCBuffer;
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result->fUCLimit = result->fUCBuffer;
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result->fConverter = NULL;
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result->fBundle = NULL;
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if(hasICUData(codepage) == TRUE) {
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/* if locale is 0, use the default */
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if(locale == 0)
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locale = uloc_getDefault();
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result->fBundle = u_loccache_get(locale);
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if(result->fBundle == 0) {
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/* DO NOT FCLOSE HERE! */
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free(result);
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return 0;
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}
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} else {
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/* bootstrap mode */
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return result;
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}
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/* if the codepage is 0, use the default for the locale */
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if(codepage == 0) {
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codepage = ufile_lookup_codepage(locale);
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/* if the codepage is still 0, the default codepage will be used */
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if(codepage == 0) {
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result->fConverter = ucnv_open(0, &status);
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if(U_FAILURE(status) || result->fConverter == 0) {
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/* DO NOT fclose here!!!!!! */
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free(result);
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return 0;
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}
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}
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} else if (*codepage != '\0') {
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result->fConverter = ucnv_open(codepage, &status);
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if(U_FAILURE(status) || result->fConverter == 0) {
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/* DO NOT fclose here!!!!!! */
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free(result);
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return 0;
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}
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} else if(useSysCP) { /* if both locale and codepage are 0, use the system default codepage */
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codepage = 0;
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}
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return result;
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}
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void
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u_fclose(UFILE *file)
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{
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fflush(file->fFile);
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if(file->fOwnFile)
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fclose(file->fFile);
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if(file->fOwnBundle)
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u_locbund_delete(file->fBundle);
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ucnv_close(file->fConverter);
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free(file);
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}
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FILE*
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u_fgetfile( UFILE *f)
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{
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return f->fFile;
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}
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const char*
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u_fgetlocale( UFILE *file)
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{
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return file->fBundle->fLocale;
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}
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int32_t
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u_fsetlocale(const char *locale,
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UFILE *file)
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{
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if(file->fOwnBundle)
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u_locbund_delete(file->fBundle);
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file->fBundle = u_loccache_get(locale);
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file->fOwnBundle = FALSE;
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return file->fBundle == 0 ? -1 : 0;
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}
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const char*
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u_fgetcodepage(UFILE *file)
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{
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UErrorCode status = U_ZERO_ERROR;
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const char *codepage;
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codepage = ucnv_getName(file->fConverter, &status);
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if(U_FAILURE(status)) return 0;
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return codepage;
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}
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int32_t
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u_fsetcodepage( const char *codepage,
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UFILE *file)
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{
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UErrorCode status = U_ZERO_ERROR;
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/* if the codepage is 0, use the default for the locale */
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if(codepage == 0) {
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codepage = ufile_lookup_codepage(file->fBundle->fLocale);
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/* if the codepage is still 0, fall back on the default codepage */
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}
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ucnv_close(file->fConverter);
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file->fConverter = ucnv_open(codepage, &status);
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if(U_FAILURE(status))
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return -1;
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return 0;
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}
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UConverter * u_fgetConverter(UFILE *file)
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{
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return file->fConverter;
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}
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