+/* $Id$ */
+
+/* fgets( char *, int, FILE * )
+
+ This file is part of the Public Domain C Library (PDCLib).
+ Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdio.h>
+
+#ifndef REGTEST
+
+#define _PDCLIB_GLUE_H _PDCLIB_GLUE_H
+#include <_PDCLIB_glue.h>
+
+char * fgets( char * _PDCLIB_restrict s, int size, struct _PDCLIB_file_t * _PDCLIB_restrict stream )
+{
+ if ( size == 0 )
+ {
+ return NULL;
+ }
+ if ( size == 1 )
+ {
+ *s = '\0';
+ return s;
+ }
+ if ( _PDCLIB_prepread( stream ) == EOF )
+ {
+ return NULL;
+ }
+ char * dest = s;
+ while ( ( ( *dest++ = stream->buffer[stream->bufidx++] ) != '\n' ) && --size > 0 )
+ {
+ if ( stream->bufidx == stream->bufend )
+ {
+ if ( _PDCLIB_fillbuffer( stream ) == EOF )
+ {
+ /* In case of error / EOF before a character is read, this
+ will lead to a \0 be written anyway. Since the results
+ are "indeterminate" by definition, this does not hurt.
+ */
+ break;
+ }
+ }
+ }
+ *dest = '\0';
+ return ( dest == s ) ? NULL : s;
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+#include <string.h>
+
+int main( void )
+{
+ FILE * fh;
+ char buffer[10];
+ char const * fgets_test = "foo\nbar\0baz\nweenie";
+ TESTCASE( ( fh = fopen( testfile, "wb+" ) ) != NULL );
+ TESTCASE( fwrite( fgets_test, 1, 18, fh ) == 18 );
+ rewind( fh );
+ TESTCASE( fgets( buffer, 10, fh ) == buffer );
+ TESTCASE( strcmp( buffer, "foo\n" ) == 0 );
+ TESTCASE( fgets( buffer, 10, fh ) == buffer );
+ TESTCASE( memcmp( buffer, "bar\0baz\n", 8 ) == 0 );
+ TESTCASE( fgets( buffer, 10, fh ) == buffer );
+ TESTCASE( strcmp( buffer, "weenie" ) == 0 );
+ TESTCASE( feof( fh ) );
+ TESTCASE( fseek( fh, -1, SEEK_END ) == 0 );
+ TESTCASE( fgets( buffer, 1, fh ) == buffer );
+ TESTCASE( strcmp( buffer, "" ) == 0 );
+ TESTCASE( fgets( buffer, 0, fh ) == NULL );
+ TESTCASE( ! feof( fh ) );
+ TESTCASE( fgets( buffer, 1, fh ) == buffer );
+ TESTCASE( strcmp( buffer, "" ) == 0 );
+ TESTCASE( ! feof( fh ) );
+ TESTCASE( fgets( buffer, 2, fh ) == buffer );
+ TESTCASE( strcmp( buffer, "e" ) == 0 );
+ TESTCASE( fseek( fh, 0, SEEK_END ) == 0 );
+ TESTCASE( fgets( buffer, 2, fh ) == NULL );
+ TESTCASE( feof( fh ) );
+ TESTCASE( fclose( fh ) == 0 );
+ TESTCASE( remove( testfile ) == 0 );
+ return TEST_RESULTS;
+}
+
+#endif
+