From c6ef89664b8c0d7aa85bddd5c7014aa6df82cbe7 Mon Sep 17 00:00:00 2001 From: tcsullivan Date: Sat, 17 Nov 2018 13:02:57 -0500 Subject: added pdclib, removed sash --- src/pdclib/functions/stdio/rename.c | 84 +++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 src/pdclib/functions/stdio/rename.c (limited to 'src/pdclib/functions/stdio/rename.c') diff --git a/src/pdclib/functions/stdio/rename.c b/src/pdclib/functions/stdio/rename.c new file mode 100644 index 0000000..5d45f1f --- /dev/null +++ b/src/pdclib/functions/stdio/rename.c @@ -0,0 +1,84 @@ +/* rename( const char *, const char * ) + + This file is part of the Public Domain C Library (PDCLib). + Permission is granted to use, modify, and / or redistribute at will. +*/ + +#include + +#ifndef REGTEST + +#include "pdclib/_PDCLIB_glue.h" + +#include + +extern struct _PDCLIB_file_t * _PDCLIB_filelist; + +int rename( const char * old, const char * new ) +{ + struct _PDCLIB_file_t * current = _PDCLIB_filelist; + while ( current != NULL ) + { + if ( ( current->filename != NULL ) && ( strcmp( current->filename, old ) == 0 ) ) + { + /* File of that name currently open. Do not rename. */ + return EOF; + } + current = current->next; + } + return _PDCLIB_rename( old, new ); +} + +#endif + +#ifdef TEST + +#include "_PDCLIB_test.h" + +#include + +int main( void ) +{ + FILE * file; + remove( testfile1 ); + remove( testfile2 ); + /* make sure that neither file exists */ + TESTCASE( fopen( testfile1, "r" ) == NULL ); + TESTCASE( fopen( testfile2, "r" ) == NULL ); + /* rename file 1 to file 2 - expected to fail */ + TESTCASE( rename( testfile1, testfile2 ) == -1 ); + /* create file 1 */ + TESTCASE( ( file = fopen( testfile1, "w" ) ) != NULL ); + TESTCASE( fputs( "x", file ) != EOF ); + TESTCASE( fclose( file ) == 0 ); + /* check that file 1 exists */ + TESTCASE( ( file = fopen( testfile1, "r" ) ) != NULL ); + TESTCASE( fclose( file ) == 0 ); + /* rename file 1 to file 2 */ + TESTCASE( rename( testfile1, testfile2 ) == 0 ); + /* check that file 2 exists, file 1 does not */ + TESTCASE( fopen( testfile1, "r" ) == NULL ); + TESTCASE( ( file = fopen( testfile2, "r" ) ) != NULL ); + TESTCASE( fclose( file ) == 0 ); + /* create another file 1 */ + TESTCASE( ( file = fopen( testfile1, "w" ) ) != NULL ); + TESTCASE( fputs( "x", file ) != EOF ); + TESTCASE( fclose( file ) == 0 ); + /* check that file 1 exists */ + TESTCASE( ( file = fopen( testfile1, "r" ) ) != NULL ); + TESTCASE( fclose( file ) == 0 ); + /* rename file 1 to file 2 - expected to fail, see comment in + _PDCLIB_rename() itself. + */ + /* NOREG as glibc overwrites existing destination file. */ + TESTCASE_NOREG( rename( testfile1, testfile2 ) == -1 ); + /* remove both files */ + TESTCASE( remove( testfile1 ) == 0 ); + TESTCASE( remove( testfile2 ) == 0 ); + /* check that they're gone */ + TESTCASE( fopen( testfile1, "r" ) == NULL ); + TESTCASE( fopen( testfile2, "r" ) == NULL ); + return TEST_RESULTS; +} + +#endif -- cgit v1.2.3