The Tor Browser: intl/icu/source/tools/toolutil/filestrm.c@fc2d59ddac77

     1 /*

     2 ******************************************************************************

3 *

     4 *   Copyright (C) 1997-2011, International Business Machines

     5 *   Corporation and others.  All Rights Reserved.

6 *

     7 ******************************************************************************

8 *

     9 * File FILESTRM.C

    10 *

    11 * @author       Glenn Marcy

    12 *

    13 * Modification History:

    14 *

    15 *   Date        Name        Description

    16 *   5/8/98      gm          Created

    17 *  03/02/99     stephen     Reordered params in ungetc to match stdio

    18 *                           Added wopen

    19 *   3/29/99     helena      Merged Stephen and Bertrand's changes.

    20 *

    21 ******************************************************************************

    22 */

    24 #include "filestrm.h"

    26 #include "cmemory.h"

    28 #include <stdio.h>

    30 U_CAPI FileStream* U_EXPORT2

    31 T_FileStream_open(const char* filename, const char* mode)

    32 {

    33     if(filename != NULL && *filename != 0 && mode != NULL && *mode != 0) {

    34         FILE *file = fopen(filename, mode);

    35         return (FileStream*)file;

    36     } else {

    37         return NULL;

    38     }

    39 }

    41 /*

    42 U_CAPI FileStream* U_EXPORT2

    43 T_FileStream_wopen(const wchar_t* filename, const wchar_t* mode)

    44 {

    45    // TBD: _wfopen is believed to be MS-specific?

    46 #if U_PLATFORM_USES_ONLY_WIN32_API

    47     FILE* result = _wfopen(filename, mode);

    48     return (FileStream*)result;

    49 #else

    50     size_t fnMbsSize, mdMbsSize;

    51     char *fn, *md;

    52     FILE *result;

    54     // convert from wchar_t to char

    55     fnMbsSize = wcstombs(NULL, filename, ((size_t)-1) >> 1);

    56     fn = (char*)uprv_malloc(fnMbsSize+2);

    57     wcstombs(fn, filename, fnMbsSize);

    58     fn[fnMbsSize] = 0;

    60     mdMbsSize = wcstombs(NULL, mode, ((size_t)-1) >> 1);

    61     md = (char*)uprv_malloc(mdMbsSize+2);

    62     wcstombs(md, mode, mdMbsSize);

    63     md[mdMbsSize] = 0;

    65     result = fopen(fn, md);

    66     uprv_free(fn);

    67     uprv_free(md);

    68     return (FileStream*)result;

    69 #endif

    70 }

    71 */

    72 U_CAPI void U_EXPORT2

    73 T_FileStream_close(FileStream* fileStream)

    74 {

    75     if (fileStream != 0)

    76         fclose((FILE*)fileStream);

    77 }

    79 U_CAPI UBool U_EXPORT2

    80 T_FileStream_file_exists(const char* filename)

    81 {

    82     FILE* temp = fopen(filename, "r");

    83     if (temp) {

    84         fclose(temp);

    85         return TRUE;

    86     } else

    87         return FALSE;

    88 }

    90 /*static const int32_t kEOF;

    91 const int32_t FileStream::kEOF = EOF;*/

    93 /*

    94 U_CAPI FileStream*

    95 T_FileStream_tmpfile()

    96 {

    97     FILE* file = tmpfile();

    98     return (FileStream*)file;

    99 }

   100 */

   102 U_CAPI int32_t U_EXPORT2

   103 T_FileStream_read(FileStream* fileStream, void* addr, int32_t len)

   104 {

   105     return fread(addr, 1, len, (FILE*)fileStream);

   106 }

   108 U_CAPI int32_t U_EXPORT2

   109 T_FileStream_write(FileStream* fileStream, const void* addr, int32_t len)

   110 {

   112     return fwrite(addr, 1, len, (FILE*)fileStream);

   113 }

   115 U_CAPI void U_EXPORT2

   116 T_FileStream_rewind(FileStream* fileStream)

   117 {

   118     rewind((FILE*)fileStream);

   119 }

   121 U_CAPI int32_t U_EXPORT2

   122 T_FileStream_putc(FileStream* fileStream, int32_t ch)

   123 {

   124     int32_t c = fputc(ch, (FILE*)fileStream);

   125     return c;

   126 }

   128 U_CAPI int U_EXPORT2

   129 T_FileStream_getc(FileStream* fileStream)

   130 {

   131     int c = fgetc((FILE*)fileStream);

   132     return c;

   133 }

   135 U_CAPI int32_t U_EXPORT2

   136 T_FileStream_ungetc(int32_t ch, FileStream* fileStream)

   137 {

   139     int32_t c = ungetc(ch, (FILE*)fileStream);

   140     return c;

   141 }

   143 U_CAPI int32_t U_EXPORT2

   144 T_FileStream_peek(FileStream* fileStream)

   145 {

   146     int32_t c = fgetc((FILE*)fileStream);

   147     return ungetc(c, (FILE*)fileStream);

   148 }

   150 U_CAPI char* U_EXPORT2

   151 T_FileStream_readLine(FileStream* fileStream, char* buffer, int32_t length)

   152 {

   153     return fgets(buffer, length, (FILE*)fileStream);

   154 }

   156 U_CAPI int32_t U_EXPORT2

   157 T_FileStream_writeLine(FileStream* fileStream, const char* buffer)

   158 {

   159     return fputs(buffer, (FILE*)fileStream);

   160 }

   162 U_CAPI int32_t U_EXPORT2

   163 T_FileStream_size(FileStream* fileStream)

   164 {

   165     int32_t savedPos = ftell((FILE*)fileStream);

   166     int32_t size = 0;

   168     /*Changes by Bertrand A. D. doesn't affect the current position

   169     goes to the end of the file before ftell*/

   170     fseek((FILE*)fileStream, 0, SEEK_END);

   171     size = (int32_t)ftell((FILE*)fileStream);

   172     fseek((FILE*)fileStream, savedPos, SEEK_SET);

   173     return size;

   174 }

   176 U_CAPI int U_EXPORT2

   177 T_FileStream_eof(FileStream* fileStream)

   178 {

   179     return feof((FILE*)fileStream);

   180 }

   182 /*

   183  Warning

   184  This function may not work consistently on all platforms

   185  (e.g. HP-UX, FreeBSD and MacOSX don't return an error when

   186  putc is used on a file opened as readonly)

   187 */

   188 U_CAPI int U_EXPORT2

   189 T_FileStream_error(FileStream* fileStream)

   190 {

   191     return (fileStream == 0 || ferror((FILE*)fileStream));

   192 }

   194 /* This function doesn't work. */

   195 /* force the stream to set its error flag*/

   196 /*U_CAPI void U_EXPORT2

   197 T_FileStream_setError(FileStream* fileStream)

   198 {

   199     fseek((FILE*)fileStream, 99999, SEEK_SET);

   200 }

   201 */

   203 U_CAPI FileStream* U_EXPORT2

   204 T_FileStream_stdin(void)

   205 {

   206     return (FileStream*)stdin;

   207 }

   209 U_CAPI FileStream* U_EXPORT2

   210 T_FileStream_stdout(void)

   211 {

   212     return (FileStream*)stdout;

   213 }

   216 U_CAPI FileStream* U_EXPORT2

   217 T_FileStream_stderr(void)

   218 {

   219     return (FileStream*)stderr;

   220 }

   222 U_CAPI UBool U_EXPORT2

   223 T_FileStream_remove(const char* fileName){

   224     return (remove(fileName) == 0);

   225 }

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