258 lines
6.7 KiB
C
258 lines
6.7 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 "locmap.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 "cstring.h"
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#include "cmemory.h"
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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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U_CAPI UFILE* U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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*) uprv_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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uprv_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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uprv_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 = uprv_defaultCodePageForLocale(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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}
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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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uprv_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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U_CAPI UFILE* U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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*) uprv_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)) {
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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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}
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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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uprv_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 = uprv_defaultCodePageForLocale(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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uprv_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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uprv_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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U_CAPI void U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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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uprv_free(file);
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}
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U_CAPI FILE* U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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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U_CAPI const char* U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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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U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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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U_CAPI const char* U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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))
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return 0;
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return codepage;
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}
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U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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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 = uprv_defaultCodePageForLocale(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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U_CAPI UConverter * U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
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u_fgetConverter(UFILE *file)
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{
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return file->fConverter;
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}
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