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/*
* "git mv" builtin command
*
* Copyright (C) 2006 Johannes Schindelin
*/
#include <fnmatch.h>
#include "cache.h"
#include "builtin.h"
#include "dir.h"
#include "cache-tree.h"
#include "path-list.h"
static const char builtin_mv_usage[] =
"git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)";
static const char **copy_pathspec(const char *prefix, const char **pathspec,
int count, int base_name)
{
const char **result = xmalloc((count + 1) * sizeof(const char *));
memcpy(result, pathspec, count * sizeof(const char *));
result[count] = NULL;
if (base_name) {
int i;
for (i = 0; i < count; i++) {
const char *last_slash = strrchr(result[i], '/');
if (last_slash)
result[i] = last_slash + 1;
}
}
return get_pathspec(prefix, result);
}
static void show_list(const char *label, struct path_list *list)
{
if (list->nr > 0) {
int i;
printf("%s", label);
for (i = 0; i < list->nr; i++)
printf("%s%s", i > 0 ? ", " : "", list->items[i].path);
putchar('\n');
}
}
static struct lock_file lock_file;
int cmd_mv(int argc, const char **argv, char **envp)
{
int i, newfd, count;
int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
const char *prefix = setup_git_directory();
const char **source, **destination, **dest_path;
struct stat st;
struct path_list overwritten = {NULL, 0, 0, 0};
struct path_list src_for_dst = {NULL, 0, 0, 0};
struct path_list added = {NULL, 0, 0, 0};
struct path_list deleted = {NULL, 0, 0, 0};
struct path_list changed = {NULL, 0, 0, 0};
git_config(git_default_config);
newfd = hold_lock_file_for_update(&lock_file, get_index_file());
if (newfd < 0)
die("unable to create new index file");
if (read_cache() < 0)
die("index file corrupt");
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (arg[0] != '-')
break;
if (!strcmp(arg, "--")) {
i++;
break;
}
if (!strcmp(arg, "-n")) {
show_only = 1;
continue;
}
if (!strcmp(arg, "-f")) {
force = 1;
continue;
}
if (!strcmp(arg, "-k")) {
ignore_errors = 1;
continue;
}
die(builtin_mv_usage);
}
count = argc - i - 1;
if (count < 1)
usage(builtin_mv_usage);
source = copy_pathspec(prefix, argv + i, count, 0);
dest_path = copy_pathspec(prefix, argv + argc - 1, 1, 0);
if (!lstat(dest_path[0], &st) && S_ISDIR(st.st_mode))
destination = copy_pathspec(dest_path[0], argv + i, count, 1);
else {
if (count != 1)
usage(builtin_mv_usage);
destination = dest_path;
}
/* Checking */
for (i = 0; i < count; i++) {
const char *bad = NULL;
if (show_only)
printf("Checking rename of '%s' to '%s'\n",
source[i], destination[i]);
if (lstat(source[i], &st) < 0)
bad = "bad source";
else if (lstat(destination[i], &st) == 0) {
bad = "destination exists";
if (force) {
/*
* only files can overwrite each other:
* check both source and destination
*/
if (S_ISREG(st.st_mode)) {
fprintf(stderr, "Warning: %s;"
" will overwrite!\n",
bad);
bad = NULL;
path_list_insert(destination[i],
&overwritten);
} else
bad = "Cannot overwrite";
}
}
if (!bad &&
!strncmp(destination[i], source[i], strlen(source[i])))
bad = "can not move directory into itself";
if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0)
bad = "not under version control";
if (!bad) {
if (path_list_has_path(&src_for_dst, destination[i]))
bad = "multiple sources for the same target";
else
path_list_insert(destination[i], &src_for_dst);
}
if (bad) {
if (ignore_errors) {
if (--count > 0) {
memmove(source + i, source + i + 1,
(count - i) * sizeof(char *));
memmove(destination + i,
destination + i + 1,
(count - i) * sizeof(char *));
}
} else
die ("Error: %s, source=%s, destination=%s",
bad, source[i], destination[i]);
}
}
for (i = 0; i < count; i++) {
if (show_only || verbose)
printf("Renaming %s to %s\n",
source[i], destination[i]);
if (!show_only &&
rename(source[i], destination[i]) < 0 &&
!ignore_errors)
die ("renaming %s failed: %s",
source[i], strerror(errno));
if (cache_name_pos(source[i], strlen(source[i])) >= 0) {
path_list_insert(source[i], &deleted);
/* destination can be a directory with 1 file inside */
if (path_list_has_path(&overwritten, destination[i]))
path_list_insert(destination[i], &changed);
else
path_list_insert(destination[i], &added);
} else
path_list_insert(destination[i], &added);
}
if (show_only) {
show_list("Changed : ", &changed);
show_list("Adding : ", &added);
show_list("Deleting : ", &deleted);
} else {
for (i = 0; i < changed.nr; i++) {
const char *path = changed.items[i].path;
int i = cache_name_pos(path, strlen(path));
struct cache_entry *ce = active_cache[i];
if (i < 0)
die ("Huh? Cache entry for %s unknown?", path);
refresh_cache_entry(ce, 0);
}
for (i = 0; i < added.nr; i++) {
const char *path = added.items[i].path;
add_file_to_index(path, verbose);
}
for (i = 0; i < deleted.nr; i++) {
const char *path = deleted.items[i].path;
remove_file_from_cache(path);
}
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
close(newfd) ||
commit_lock_file(&lock_file))
die("Unable to write new index file");
}
}
return 0;
}
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