| /* |
| ****************************************************************************** |
| * |
| * Copyright (C) 1997-2011, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| * |
| ****************************************************************************** |
| * |
| * File FILESTRM.C |
| * |
| * @author Glenn Marcy |
| * |
| * Modification History: |
| * |
| * Date Name Description |
| * 5/8/98 gm Created |
| * 03/02/99 stephen Reordered params in ungetc to match stdio |
| * Added wopen |
| * 3/29/99 helena Merged Stephen and Bertrand's changes. |
| * |
| ****************************************************************************** |
| */ |
| |
| #include "filestrm.h" |
| |
| #include "cmemory.h" |
| |
| #include <stdio.h> |
| |
| U_CAPI FileStream* U_EXPORT2 |
| T_FileStream_open(const char* filename, const char* mode) |
| { |
| if(filename != NULL && *filename != 0 && mode != NULL && *mode != 0) { |
| FILE *file = fopen(filename, mode); |
| return (FileStream*)file; |
| } else { |
| return NULL; |
| } |
| } |
| |
| /* |
| U_CAPI FileStream* U_EXPORT2 |
| T_FileStream_wopen(const wchar_t* filename, const wchar_t* mode) |
| { |
| // TBD: _wfopen is believed to be MS-specific? |
| #if U_PLATFORM_USES_ONLY_WIN32_API |
| FILE* result = _wfopen(filename, mode); |
| return (FileStream*)result; |
| #else |
| size_t fnMbsSize, mdMbsSize; |
| char *fn, *md; |
| FILE *result; |
| |
| // convert from wchar_t to char |
| fnMbsSize = wcstombs(NULL, filename, ((size_t)-1) >> 1); |
| fn = (char*)uprv_malloc(fnMbsSize+2); |
| wcstombs(fn, filename, fnMbsSize); |
| fn[fnMbsSize] = 0; |
| |
| mdMbsSize = wcstombs(NULL, mode, ((size_t)-1) >> 1); |
| md = (char*)uprv_malloc(mdMbsSize+2); |
| wcstombs(md, mode, mdMbsSize); |
| md[mdMbsSize] = 0; |
| |
| result = fopen(fn, md); |
| uprv_free(fn); |
| uprv_free(md); |
| return (FileStream*)result; |
| #endif |
| } |
| */ |
| U_CAPI void U_EXPORT2 |
| T_FileStream_close(FileStream* fileStream) |
| { |
| if (fileStream != 0) |
| fclose((FILE*)fileStream); |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| T_FileStream_file_exists(const char* filename) |
| { |
| FILE* temp = fopen(filename, "r"); |
| if (temp) { |
| fclose(temp); |
| return TRUE; |
| } else |
| return FALSE; |
| } |
| |
| /*static const int32_t kEOF; |
| const int32_t FileStream::kEOF = EOF;*/ |
| |
| /* |
| U_CAPI FileStream* |
| T_FileStream_tmpfile() |
| { |
| FILE* file = tmpfile(); |
| return (FileStream*)file; |
| } |
| */ |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_read(FileStream* fileStream, void* addr, int32_t len) |
| { |
| return fread(addr, 1, len, (FILE*)fileStream); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_write(FileStream* fileStream, const void* addr, int32_t len) |
| { |
| |
| return fwrite(addr, 1, len, (FILE*)fileStream); |
| } |
| |
| U_CAPI void U_EXPORT2 |
| T_FileStream_rewind(FileStream* fileStream) |
| { |
| rewind((FILE*)fileStream); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_putc(FileStream* fileStream, int32_t ch) |
| { |
| int32_t c = fputc(ch, (FILE*)fileStream); |
| return c; |
| } |
| |
| U_CAPI int U_EXPORT2 |
| T_FileStream_getc(FileStream* fileStream) |
| { |
| int c = fgetc((FILE*)fileStream); |
| return c; |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_ungetc(int32_t ch, FileStream* fileStream) |
| { |
| |
| int32_t c = ungetc(ch, (FILE*)fileStream); |
| return c; |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_peek(FileStream* fileStream) |
| { |
| int32_t c = fgetc((FILE*)fileStream); |
| return ungetc(c, (FILE*)fileStream); |
| } |
| |
| U_CAPI char* U_EXPORT2 |
| T_FileStream_readLine(FileStream* fileStream, char* buffer, int32_t length) |
| { |
| return fgets(buffer, length, (FILE*)fileStream); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_writeLine(FileStream* fileStream, const char* buffer) |
| { |
| return fputs(buffer, (FILE*)fileStream); |
| } |
| |
| U_CAPI int32_t U_EXPORT2 |
| T_FileStream_size(FileStream* fileStream) |
| { |
| int32_t savedPos = ftell((FILE*)fileStream); |
| int32_t size = 0; |
| |
| /*Changes by Bertrand A. D. doesn't affect the current position |
| goes to the end of the file before ftell*/ |
| fseek((FILE*)fileStream, 0, SEEK_END); |
| size = (int32_t)ftell((FILE*)fileStream); |
| fseek((FILE*)fileStream, savedPos, SEEK_SET); |
| return size; |
| } |
| |
| U_CAPI int U_EXPORT2 |
| T_FileStream_eof(FileStream* fileStream) |
| { |
| return feof((FILE*)fileStream); |
| } |
| |
| /* |
| Warning |
| This function may not work consistently on all platforms |
| (e.g. HP-UX, FreeBSD and MacOSX don't return an error when |
| putc is used on a file opened as readonly) |
| */ |
| U_CAPI int U_EXPORT2 |
| T_FileStream_error(FileStream* fileStream) |
| { |
| return (fileStream == 0 || ferror((FILE*)fileStream)); |
| } |
| |
| /* This function doesn't work. */ |
| /* force the stream to set its error flag*/ |
| /*U_CAPI void U_EXPORT2 |
| T_FileStream_setError(FileStream* fileStream) |
| { |
| fseek((FILE*)fileStream, 99999, SEEK_SET); |
| } |
| */ |
| |
| U_CAPI FileStream* U_EXPORT2 |
| T_FileStream_stdin(void) |
| { |
| return (FileStream*)stdin; |
| } |
| |
| U_CAPI FileStream* U_EXPORT2 |
| T_FileStream_stdout(void) |
| { |
| return (FileStream*)stdout; |
| } |
| |
| |
| U_CAPI FileStream* U_EXPORT2 |
| T_FileStream_stderr(void) |
| { |
| return (FileStream*)stderr; |
| } |
| |
| U_CAPI UBool U_EXPORT2 |
| T_FileStream_remove(const char* fileName){ |
| return (remove(fileName) == 0); |
| } |