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/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdlib.h>
#include <string.h>
#if HAVE_DIRNAME
#include <libgen.h>
#endif /* HAVE_DIRNAME */
#include "opal/util/basename.h"
#include "opal/util/os_path.h"
#include "opal/constants.h"
/**
* Return a pointer into the original string where the last PATH delimiter
* was found. It does not modify the original string. Moreover, it does not
* scan the full string, but only the part allowed by the specified number
* of characters.
* If the last character on the string is a path separator, it will be skipped.
*/
static inline char* opal_find_last_path_separator( const char* filename, size_t n )
{
char* p = (char*)filename + n;
/* First skip the latest separators */
for( ; p != filename; p-- ) {
#if defined(__WINDOWS__)
if( (*p != '\\') && (*p != '/') )
break;
#else
if( *p != OPAL_PATH_SEP[0] )
break;
#endif /* defined(__WINDOWS__) */
}
for( ; p != filename; p-- ) {
#if defined(__WINDOWS__)
if( (*p == '\\') || (*p == '/') )
return p;
#else
if( *p == OPAL_PATH_SEP[0] )
return p;
#endif /* defined(__WINDOWS__) */
}
return NULL; /* nothing found inside the filename */
}
char *opal_basename(const char *filename)
{
size_t i;
char *tmp, *ret = NULL;
const char sep = OPAL_PATH_SEP[0];
/* Check for the bozo case */
if (NULL == filename) {
return NULL;
}
/* On Windows, automatically exclude a drive designator */
#ifdef __WINDOWS__
if (strlen(filename) == 2 &&
isalpha(filename[0]) && ':' == filename[1]) {
return strdup(filename);
} else if (strlen(filename) == 3 &&
isalpha(filename[0]) && ':' == filename[1] && sep == filename[2]) {
return strdup(filename);
}
if (':' == filename[1] && isalpha(filename[0])) {
filename += 2;
if (sep == filename[0]) {
++filename;
}
}
#endif
/* Check for the bozo cases */
if (0 == strlen(filename)) {
return strdup("");
}
if (sep == filename[0] && '\0' == filename[1]) {
return strdup(filename);
}
/* Remove trailing sep's (note that we already know that strlen > 0) */
tmp = strdup(filename);
for (i = strlen(tmp) - 1; i > 0; --i) {
if (sep == tmp[i]) {
tmp[i] = '\0';
} else {
break;
}
}
if (0 == i) {
tmp[0] = sep;
return tmp;
}
/* Look for the final sep */
ret = strrchr(tmp, sep);
if (NULL == ret) {
return tmp;
}
ret = strdup(ret + 1);
free(tmp);
return opal_make_filename_os_friendly(ret);
}
char* opal_dirname(const char* filename)
{
#if defined(HAVE_DIRNAME)
char* safe_tmp = strdup(filename), *result;
result = strdup(dirname(safe_tmp));
free(safe_tmp);
return result;
#else
const char* p = opal_find_last_path_separator(filename, strlen(filename));
for( ; p != filename; p-- ) {
if( (*p == '\\') || (*p == '/') ) {
/* If there are several delimiters remove them all */
for( --p; p != filename; p-- ) {
if( (*p != '\\') && (*p != '/') ) {
p++;
break;
}
}
if( p != filename ) {
char* ret = (char*)malloc( p - filename + 1 );
strncpy_s( ret, (p - filename + 1), filename, p - filename );
ret[p - filename] = '\0';
return opal_make_filename_os_friendly(ret);
}
break; /* return the duplicate of "." */
}
}
return _strdup(".");
#endif /* defined(HAVE_DIRNAME) */
}
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