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ee9693e246
* jc/index-output: git-read-tree --index-output=<file> _GIT_INDEX_OUTPUT: allow plumbing to output to an alternative index file. Conflicts: builtin-apply.c
295 lines
7.4 KiB
C
295 lines
7.4 KiB
C
/*
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* "git mv" builtin command
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*
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* Copyright (C) 2006 Johannes Schindelin
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "dir.h"
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#include "cache-tree.h"
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#include "path-list.h"
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static const char builtin_mv_usage[] =
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"git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)";
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static const char **copy_pathspec(const char *prefix, const char **pathspec,
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int count, int base_name)
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{
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int i;
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const char **result = xmalloc((count + 1) * sizeof(const char *));
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memcpy(result, pathspec, count * sizeof(const char *));
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result[count] = NULL;
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for (i = 0; i < count; i++) {
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int length = strlen(result[i]);
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if (length > 0 && result[i][length - 1] == '/') {
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char *without_slash = xmalloc(length);
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memcpy(without_slash, result[i], length - 1);
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without_slash[length - 1] = '\0';
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result[i] = without_slash;
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}
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if (base_name) {
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const char *last_slash = strrchr(result[i], '/');
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if (last_slash)
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result[i] = last_slash + 1;
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}
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}
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return get_pathspec(prefix, result);
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}
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static void show_list(const char *label, struct path_list *list)
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{
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if (list->nr > 0) {
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int i;
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printf("%s", label);
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for (i = 0; i < list->nr; i++)
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printf("%s%s", i > 0 ? ", " : "", list->items[i].path);
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putchar('\n');
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}
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}
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static const char *add_slash(const char *path)
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{
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int len = strlen(path);
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if (path[len - 1] != '/') {
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char *with_slash = xmalloc(len + 2);
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memcpy(with_slash, path, len);
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with_slash[len++] = '/';
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with_slash[len] = 0;
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return with_slash;
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}
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return path;
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}
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static struct lock_file lock_file;
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int cmd_mv(int argc, const char **argv, const char *prefix)
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{
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int i, newfd, count;
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int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
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const char **source, **destination, **dest_path;
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enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
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struct stat st;
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struct path_list overwritten = {NULL, 0, 0, 0};
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struct path_list src_for_dst = {NULL, 0, 0, 0};
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struct path_list added = {NULL, 0, 0, 0};
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struct path_list deleted = {NULL, 0, 0, 0};
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struct path_list changed = {NULL, 0, 0, 0};
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git_config(git_default_config);
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newfd = hold_locked_index(&lock_file, 1);
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if (read_cache() < 0)
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die("index file corrupt");
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for (i = 1; i < argc; i++) {
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const char *arg = argv[i];
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if (arg[0] != '-')
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break;
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if (!strcmp(arg, "--")) {
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i++;
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break;
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}
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if (!strcmp(arg, "-n")) {
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show_only = 1;
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continue;
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}
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if (!strcmp(arg, "-f")) {
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force = 1;
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continue;
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}
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if (!strcmp(arg, "-k")) {
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ignore_errors = 1;
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continue;
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}
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usage(builtin_mv_usage);
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}
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count = argc - i - 1;
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if (count < 1)
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usage(builtin_mv_usage);
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source = copy_pathspec(prefix, argv + i, count, 0);
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modes = xcalloc(count, sizeof(enum update_mode));
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dest_path = copy_pathspec(prefix, argv + argc - 1, 1, 0);
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if (dest_path[0][0] == '\0')
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/* special case: "." was normalized to "" */
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destination = copy_pathspec(dest_path[0], argv + i, count, 1);
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else if (!lstat(dest_path[0], &st) &&
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S_ISDIR(st.st_mode)) {
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dest_path[0] = add_slash(dest_path[0]);
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destination = copy_pathspec(dest_path[0], argv + i, count, 1);
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} else {
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if (count != 1)
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usage(builtin_mv_usage);
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destination = dest_path;
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}
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/* Checking */
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for (i = 0; i < count; i++) {
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const char *src = source[i], *dst = destination[i];
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int length, src_is_dir;
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const char *bad = NULL;
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if (show_only)
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printf("Checking rename of '%s' to '%s'\n", src, dst);
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length = strlen(src);
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if (lstat(src, &st) < 0)
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bad = "bad source";
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else if (!strncmp(src, dst, length) &&
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(dst[length] == 0 || dst[length] == '/')) {
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bad = "can not move directory into itself";
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} else if ((src_is_dir = S_ISDIR(st.st_mode))
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&& lstat(dst, &st) == 0)
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bad = "cannot move directory over file";
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else if (src_is_dir) {
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const char *src_w_slash = add_slash(src);
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int len_w_slash = length + 1;
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int first, last;
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modes[i] = WORKING_DIRECTORY;
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first = cache_name_pos(src_w_slash, len_w_slash);
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if (first >= 0)
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die ("Huh? %.*s is in index?",
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len_w_slash, src_w_slash);
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first = -1 - first;
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for (last = first; last < active_nr; last++) {
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const char *path = active_cache[last]->name;
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if (strncmp(path, src_w_slash, len_w_slash))
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break;
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}
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free((char *)src_w_slash);
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if (last - first < 1)
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bad = "source directory is empty";
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else {
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int j, dst_len;
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if (last - first > 0) {
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source = xrealloc(source,
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(count + last - first)
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* sizeof(char *));
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destination = xrealloc(destination,
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(count + last - first)
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* sizeof(char *));
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modes = xrealloc(modes,
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(count + last - first)
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* sizeof(enum update_mode));
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}
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dst = add_slash(dst);
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dst_len = strlen(dst) - 1;
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for (j = 0; j < last - first; j++) {
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const char *path =
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active_cache[first + j]->name;
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source[count + j] = path;
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destination[count + j] =
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prefix_path(dst, dst_len,
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path + length);
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modes[count + j] = INDEX;
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}
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count += last - first;
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}
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} else if (lstat(dst, &st) == 0) {
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bad = "destination exists";
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if (force) {
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/*
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* only files can overwrite each other:
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* check both source and destination
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*/
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if (S_ISREG(st.st_mode)) {
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fprintf(stderr, "Warning: %s;"
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" will overwrite!\n",
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bad);
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bad = NULL;
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path_list_insert(dst, &overwritten);
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} else
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bad = "Cannot overwrite";
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}
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} else if (cache_name_pos(src, length) < 0)
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bad = "not under version control";
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else if (path_list_has_path(&src_for_dst, dst))
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bad = "multiple sources for the same target";
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else
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path_list_insert(dst, &src_for_dst);
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if (bad) {
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if (ignore_errors) {
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if (--count > 0) {
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memmove(source + i, source + i + 1,
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(count - i) * sizeof(char *));
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memmove(destination + i,
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destination + i + 1,
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(count - i) * sizeof(char *));
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}
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} else
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die ("%s, source=%s, destination=%s",
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bad, src, dst);
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}
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}
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for (i = 0; i < count; i++) {
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const char *src = source[i], *dst = destination[i];
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enum update_mode mode = modes[i];
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if (show_only || verbose)
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printf("Renaming %s to %s\n", src, dst);
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if (!show_only && mode != INDEX &&
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rename(src, dst) < 0 && !ignore_errors)
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die ("renaming %s failed: %s", src, strerror(errno));
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if (mode == WORKING_DIRECTORY)
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continue;
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if (cache_name_pos(src, strlen(src)) >= 0) {
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path_list_insert(src, &deleted);
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/* destination can be a directory with 1 file inside */
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if (path_list_has_path(&overwritten, dst))
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path_list_insert(dst, &changed);
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else
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path_list_insert(dst, &added);
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} else
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path_list_insert(dst, &added);
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}
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if (show_only) {
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show_list("Changed : ", &changed);
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show_list("Adding : ", &added);
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show_list("Deleting : ", &deleted);
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} else {
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for (i = 0; i < changed.nr; i++) {
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const char *path = changed.items[i].path;
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int j = cache_name_pos(path, strlen(path));
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struct cache_entry *ce = active_cache[j];
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if (j < 0)
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die ("Huh? Cache entry for %s unknown?", path);
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refresh_cache_entry(ce, 0);
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}
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for (i = 0; i < added.nr; i++) {
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const char *path = added.items[i].path;
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add_file_to_cache(path, verbose);
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}
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for (i = 0; i < deleted.nr; i++) {
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const char *path = deleted.items[i].path;
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remove_file_from_cache(path);
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cache_tree_invalidate_path(active_cache_tree, path);
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}
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if (active_cache_changed) {
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if (write_cache(newfd, active_cache, active_nr) ||
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close(newfd) ||
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commit_locked_index(&lock_file))
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die("Unable to write new index file");
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}
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}
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return 0;
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}
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