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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 (c) 2009-2014 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2014-2024 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2014 Intel, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_LIBGEN_H
# include <libgen.h>
#endif /* HAVE_LIBGEN_H */
#include "opal/util/basename.h"
#include "opal/util/os_path.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 (*p != OPAL_PATH_SEP[0]) {
break;
}
}
for (; p >= filename; p--) {
if (*p == OPAL_PATH_SEP[0]) {
return p;
}
}
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;
}
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);
if (1 < strlen(tmp)) {
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 = opal_find_last_path_separator(tmp, strlen(tmp));
if (NULL == ret) {
return tmp;
}
ret = strdup(ret + 1);
free(tmp);
return ret;
}
char *opal_dirname(const char *filename)
{
#if defined(HAVE_DIRNAME) || OPAL_HAVE_DIRNAME
char *safe_tmp = strdup(filename), *result;
if (NULL == safe_tmp) {
return NULL;
}
result = strdup(dirname(safe_tmp));
free(safe_tmp);
return result;
#else
const char *p = opal_find_last_path_separator(filename, strlen(filename));
/* NOTE: p will be NULL if no path separator was in the filename - i.e.,
* if filename is just a local file */
for (; NULL != p && 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);
if (NULL == ret) {
return NULL;
}
opal_string_copy(ret, 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) || OPAL_HAVE_DIRNAME */
}
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