a1df57abb9
<JC> Editorial Note. We may want to include standard headers in one of those headers everybody includes, e.g. cache.h, to reduce clutters, but this commit is as Thomas posted to the GIT list. Date: Sat, 7 May 2005 10:41:41 +0200 Signed-off-by: Thomas Glanzmann <sithglan@stud.uni-erlangen.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/*
|
|
* Copyright (C) 2005 Junio C Hamano
|
|
*/
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <limits.h>
|
|
#include "cache.h"
|
|
#include "commit.h"
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include "pull.h"
|
|
|
|
static int use_link = 0;
|
|
static int use_symlink = 0;
|
|
static int use_filecopy = 1;
|
|
|
|
static char *path;
|
|
|
|
int fetch(unsigned char *sha1)
|
|
{
|
|
static int object_name_start = -1;
|
|
static char filename[PATH_MAX];
|
|
char *hex = sha1_to_hex(sha1);
|
|
const char *dest_filename = sha1_file_name(sha1);
|
|
|
|
if (object_name_start < 0) {
|
|
strcpy(filename, path); /* e.g. git.git */
|
|
strcat(filename, "/objects/");
|
|
object_name_start = strlen(filename);
|
|
}
|
|
filename[object_name_start+0] = hex[0];
|
|
filename[object_name_start+1] = hex[1];
|
|
filename[object_name_start+2] = '/';
|
|
strcpy(filename + object_name_start + 3, hex + 2);
|
|
if (use_link) {
|
|
if (!link(filename, dest_filename)) {
|
|
pull_say("link %s\n", hex);
|
|
return 0;
|
|
}
|
|
/* If we got ENOENT there is no point continuing. */
|
|
if (errno == ENOENT) {
|
|
fprintf(stderr, "does not exist %s\n", filename);
|
|
return -1;
|
|
}
|
|
}
|
|
if (use_symlink && !symlink(filename, dest_filename)) {
|
|
pull_say("symlink %s\n", hex);
|
|
return 0;
|
|
}
|
|
if (use_filecopy) {
|
|
int ifd, ofd, status;
|
|
struct stat st;
|
|
void *map;
|
|
ifd = open(filename, O_RDONLY);
|
|
if (ifd < 0 || fstat(ifd, &st) < 0) {
|
|
close(ifd);
|
|
fprintf(stderr, "cannot open %s\n", filename);
|
|
return -1;
|
|
}
|
|
map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, ifd, 0);
|
|
close(ifd);
|
|
if (-1 == (int)(long)map) {
|
|
fprintf(stderr, "cannot mmap %s\n", filename);
|
|
return -1;
|
|
}
|
|
ofd = open(dest_filename, O_WRONLY | O_CREAT | O_EXCL, 0666);
|
|
status = ((ofd < 0) ||
|
|
(write(ofd, map, st.st_size) != st.st_size));
|
|
munmap(map, st.st_size);
|
|
close(ofd);
|
|
if (status)
|
|
fprintf(stderr, "cannot write %s (%ld bytes)\n",
|
|
dest_filename, st.st_size);
|
|
else
|
|
pull_say("copy %s\n", hex);
|
|
return status;
|
|
}
|
|
fprintf(stderr, "failed to copy %s with given copy methods.\n", hex);
|
|
return -1;
|
|
}
|
|
|
|
static const char *local_pull_usage =
|
|
"git-local-pull [-c] [-t] [-a] [-l] [-s] [-n] [-v] commit-id path";
|
|
|
|
/*
|
|
* By default we only use file copy.
|
|
* If -l is specified, a hard link is attempted.
|
|
* If -s is specified, then a symlink is attempted.
|
|
* If -n is _not_ specified, then a regular file-to-file copy is done.
|
|
*/
|
|
int main(int argc, char **argv)
|
|
{
|
|
char *commit_id;
|
|
int arg = 1;
|
|
|
|
while (arg < argc && argv[arg][0] == '-') {
|
|
if (argv[arg][1] == 't')
|
|
get_tree = 1;
|
|
else if (argv[arg][1] == 'c')
|
|
get_history = 1;
|
|
else if (argv[arg][1] == 'a') {
|
|
get_all = 1;
|
|
get_tree = 1;
|
|
get_history = 1;
|
|
}
|
|
else if (argv[arg][1] == 'l')
|
|
use_link = 1;
|
|
else if (argv[arg][1] == 's')
|
|
use_symlink = 1;
|
|
else if (argv[arg][1] == 'n')
|
|
use_filecopy = 0;
|
|
else if (argv[arg][1] == 'v')
|
|
get_verbosely = 1;
|
|
else
|
|
usage(local_pull_usage);
|
|
arg++;
|
|
}
|
|
if (argc < arg + 2)
|
|
usage(local_pull_usage);
|
|
commit_id = argv[arg];
|
|
path = argv[arg + 1];
|
|
|
|
if (pull(commit_id))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|