forked from KolibriOS/kolibrios
ffca41d7f9
- Added ungetc, tollower and toupper to export - Fixed ungetc emu - Fixed file io functions - Update file_io test git-svn-id: svn://kolibrios.org@8730 a494cfbc-eb01-0410-851d-a64ba20cac60
29 lines
472 B
C
29 lines
472 B
C
#include <stdio.h>
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#include <errno.h>
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// non standard realization - support for virtually change ONLY ONE char
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int ungetc(int c, FILE* file)
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{
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int res;
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if(!file){
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errno = EBADF;
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return EOF;
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}
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if (file->mode != _FILEMODE_R){
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errno = EACCES;
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return EOF;
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}
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if (file->position == 0 || c == EOF)
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{
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errno = EOF;
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return EOF;
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}
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file->__ungetc_emu_buff = c;
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file->position--;
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return c;
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}
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