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Rewrote the code to make it somewhat shorter.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4693 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz 2010-06-03 20:43:30 +00:00
parent eacc7052eb
commit 1b71d3fe42
1 changed files with 10 additions and 13 deletions
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23
libsrc/common/fseek.c
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@ -26,7 +26,7 @@ int __fastcall__ fseek (register FILE* f, long offset, int whence)
/* Is the file open? */ /* Is the file open? */
if ((f->f_flags & _FOPEN) == 0) { if ((f->f_flags & _FOPEN) == 0) {
_errno = EINVAL; /* File not open */ _seterrno (EINVAL); /* File not open */
return -1; return -1;
} }
@ -40,21 +40,18 @@ int __fastcall__ fseek (register FILE* f, long offset, int whence)
/* Do the seek */ /* Do the seek */
res = lseek(f->f_fd, offset, whence); res = lseek(f->f_fd, offset, whence);
/* If we had an error, set the error indicator on the stream, and /* If the seek was successful. Discard any effects of the ungetc function,
* return -1. We will check for < 0 here, because that saves some code, * and clear the end-of-file indicator. Otherwise set the error indicator
* and we don't have files with 2 gigabytes in size anyway:-) * on the stream, and return -1. We will check for >= 0 here, because that
* saves some code, and we don't have files with 2 gigabytes in size
* anyway:-)
*/ */
if (res < 0) { if (res >= 0) {
f->f_flags &= ~(_FEOF | _FPUSHBACK);
return 0;
} else {
f->f_flags |= _FERROR; f->f_flags |= _FERROR;
return -1; return -1;
} }
/* The seek was successful. Discard any effects of the ungetc function,
* and clear the end-of-file indicator.
*/
f->f_flags &= ~(_FEOF | _FPUSHBACK);
/* Done */
return 0;
} }