Hash :
f79026b4
Author :
Date :
2011-07-04T11:43:34
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#include "common.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(char *buffer, size_t bufflen, 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) {
return result;
}
if (len > (int)bufflen-1) {
len = (int)bufflen-1;
result = GIT_ENOMEM;
}
if (len >= 0) {
memmove(buffer, startp, len);
buffer[len] = 0;
}
return result;
}
/*
* Based on the Android implementation, BSD licensed.
* Check http://android.git.kernel.org/
*/
int git_path_dirname_r(char *buffer, size_t bufflen, 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;
Exit:
result = len;
if (len+1 > GIT_PATH_MAX) {
return GIT_ENOMEM;
}
if (buffer == NULL)
return result;
if (len > (int)bufflen-1) {
len = (int)bufflen-1;
result = GIT_ENOMEM;
}
if (len >= 0) {
memmove(buffer, path, len);
buffer[len] = 0;
}
return result;
}
char *git_path_dirname(const char *path)
{
char *dname = NULL;
int len;
len = (path ? strlen(path) : 0) + 2;
dname = (char *)git__malloc(len);
if (dname == NULL)
return NULL;
if (git_path_dirname_r(dname, len, path) < GIT_SUCCESS) {
free(dname);
return NULL;
}
return dname;
}
char *git_path_basename(const char *path)
{
char *bname = NULL;
int len;
len = (path ? strlen(path) : 0) + 2;
bname = (char *)git__malloc(len);
if (bname == NULL)
return NULL;
if (git_path_basename_r(bname, len, path) < GIT_SUCCESS) {
free(bname);
return NULL;
}
return bname;
}
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];
}
void git_path_join_n(char *buffer_out, int count, ...)
{
va_list ap;
int i;
char *buffer_start = buffer_out;
va_start(ap, count);
for (i = 0; i < count; ++i) {
const char *path;
int len;
path = va_arg(ap, const char *);
assert((i == 0) || path != buffer_start);
if (i > 0 && *path == '/' && buffer_out > buffer_start && buffer_out[-1] == '/')
path++;
if (!*path)
continue;
len = strlen(path);
memmove(buffer_out, path, len);
buffer_out = buffer_out + len;
if (i < count - 1 && buffer_out[-1] != '/')
*buffer_out++ = '/';
}
va_end(ap);
*buffer_out = '\0';
}