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/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "path.h"
#include "posix.h"
#include <stdarg.h>
#include <stdio.h>
#include <ctype.h>
/*
* Based on the Android implementation, BSD licensed.
* Check http://android.git.kernel.org/
*/
int git_path_basename_r(git_buf *buffer, const char *path)
{
const char *endp, *startp;
int len, result;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
startp = ".";
len = 1;
goto Exit;
}
/* Strip trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* All slashes becomes "/" */
if (endp == path && *endp == '/') {
startp = "/";
len = 1;
goto Exit;
}
/* Find the start of the base */
startp = endp;
while (startp > path && *(startp - 1) != '/')
startp--;
len = endp - startp +1;
Exit:
result = len;
if (buffer != NULL) {
if (git_buf_set(buffer, startp, len) < GIT_SUCCESS)
return git__rethrow(git_buf_lasterror(buffer),
"Could not get basename of '%s'", path);
}
return result;
}
/*
* Based on the Android implementation, BSD licensed.
* Check http://android.git.kernel.org/
*/
int git_path_dirname_r(git_buf *buffer, const char *path)
{
const char *endp;
int result, len;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
path = ".";
len = 1;
goto Exit;
}
/* Strip trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* Find the start of the dir */
while (endp > path && *endp != '/')
endp--;
/* Either the dir is "/" or there are no slashes */
if (endp == path) {
path = (*endp == '/') ? "/" : ".";
len = 1;
goto Exit;
}
do {
endp--;
} while (endp > path && *endp == '/');
len = endp - path +1;
#ifdef GIT_WIN32
/* Mimic unix behavior where '/.git' returns '/': 'C:/.git' will return
'C:/' here */
if (len == 2 && isalpha(path[0]) && path[1] == ':') {
len = 3;
goto Exit;
}
#endif
Exit:
result = len;
if (buffer != NULL) {
if (git_buf_set(buffer, path, len) < GIT_SUCCESS)
return git__rethrow(git_buf_lasterror(buffer),
"Could not get dirname of '%s'", path);
}
return result;
}
char *git_path_dirname(const char *path)
{
git_buf buf = GIT_BUF_INIT;
char *dirname;
git_path_dirname_r(&buf, path);
dirname = git_buf_detach(&buf);
git_buf_free(&buf); /* avoid memleak if error occurs */
return dirname;
}
char *git_path_basename(const char *path)
{
git_buf buf = GIT_BUF_INIT;
char *basename;
git_path_basename_r(&buf, path);
basename = git_buf_detach(&buf);
git_buf_free(&buf); /* avoid memleak if error occurs */
return basename;
}
const char *git_path_topdir(const char *path)
{
size_t len;
int i;
assert(path);
len = strlen(path);
if (!len || path[len - 1] != '/')
return NULL;
for (i = len - 2; i >= 0; --i)
if (path[i] == '/')
break;
return &path[i + 1];
}
int git_path_root(const char *path)
{
int offset = 0;
#ifdef GIT_WIN32
/* Does the root of the path look like a windows drive ? */
if (isalpha(path[0]) && (path[1] == ':'))
offset += 2;
#endif
if (*(path + offset) == '/')
return offset;
return -1; /* Not a real error. Rather a signal than the path is not rooted */
}
int git_path_prettify(git_buf *path_out, const char *path, const char *base)
{
char *result = NULL;
int error = GIT_SUCCESS;
git_buf_clear(path_out);
/* construct path if needed */
if (base != NULL && git_path_root(path) < 0) {
if ((error = git_buf_joinpath(path_out, base, path)) < GIT_SUCCESS)
return error;
path = path_out->ptr;
}
/* allow realpath to allocate the buffer */
if (path != NULL)
result = p_realpath(path, NULL);
if (result) {
error = git_buf_sets(path_out, result);
git__free(result);
} else {
error = GIT_EOSERR;
}
return error;
}
int git_path_prettify_dir(git_buf *path_out, const char *path, const char *base)
{
int error = git_path_prettify(path_out, path, base);
if (error == GIT_SUCCESS)
error = git_path_to_dir(path_out);
return error;
}
int git_path_to_dir(git_buf *path)
{
if (path->asize > 0 &&
path->size > 0 &&
path->ptr[path->size - 1] != '/')
git_buf_putc(path, '/');
return git_buf_lasterror(path);
}
void git_path_string_to_dir(char* path, size_t size)
{
size_t end = strlen(path);
if (end && path[end - 1] != '/' && end < size) {
path[end] = '/';
path[end + 1] = '\0';
}
}
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