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cc65/libsrc/common/fgets.c
cuz 51752caa56 Squeezed out a few bytes
git-svn-id: svn://svn.cc65.org/cc65/trunk@3034 b7a2c559-68d2-44c3-8de9-860c34a00d81
2004-05-13 21:17:58 +00:00

67 lines
1.2 KiB
C

/*
* Ullrich von Bassewitz, 11.08.1998
*
* char* fgets (char* s, int size, FILE* f);
*/
#include <stdio.h>
#include <errno.h>
#include "_file.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
char* __fastcall__ fgets (char* s, unsigned size, FILE* f)
{
unsigned i;
int c;
if (size == 0) {
/* Invalid size */
_errno = EINVAL;
return 0;
}
/* Read input */
i = 0;
while (--size) {
/* Get next character */
if ((c = fgetc (f)) == EOF) {
s[i] = '\0';
/* Error or EOF */
if ((f->f_flags & _FERROR) != 0 || i == 0) {
/* ERROR or EOF on first char */
return 0;
} else {
/* EOF with data already read */
break;
}
}
/* One char more */
s[i++] = c;
/* Stop at end of line */
if (c == '\n') {
break;
}
}
/* Terminate the string */
s[i] = '\0';
/* Done */
return s;
}