builtin-mv: readability patch
The old version was not liked at all. This is hopefully better. Oh, and it gets rid of the goto. Note that it does not change any functionality. Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Johannes Schindelin
Junio C Hamano
parent
6e17886d37
commit
60a6bf5f53
102
builtin-mv.c
102
builtin-mv.c
@ -129,48 +129,43 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
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/* Checking */
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for (i = 0; i < count; i++) {
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int length;
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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",
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source[i], destination[i]);
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printf("Checking rename of '%s' to '%s'\n", src, dst);
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if (lstat(source[i], &st) < 0)
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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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if (!bad &&
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(length = strlen(source[i])) >= 0 &&
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!strncmp(destination[i], source[i], length) &&
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(destination[i][length] == 0 || destination[i][length] == '/'))
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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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if (S_ISDIR(st.st_mode)) {
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const char *dir = source[i], *dest_dir = destination[i];
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int first, last, len = strlen(dir);
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if (lstat(dest_dir, &st) == 0) {
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bad = "cannot move directory over file";
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goto next;
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}
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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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int first, last;
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modes[i] = WORKING_DIRECTORY;
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first = cache_name_pos(source[i], len);
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first = cache_name_pos(src, length);
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if (first >= 0)
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die ("Huh? %s/ is in index?", dir);
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die ("Huh? %s/ is in index?", src);
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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, dir, len) || path[len] != '/')
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if (strncmp(path, src, length)
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|| path[length] != '/')
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break;
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}
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if (last - first < 1)
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bad = "source directory is empty";
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else if (!bad) {
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int j, dst_len = strlen(dest_dir);
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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 = realloc(source,
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@ -184,24 +179,21 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
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* sizeof(enum update_mode));
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}
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dest_dir = add_slash(dest_dir);
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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(dest_dir, dst_len,
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path + len);
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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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goto next;
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}
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if (!bad && lstat(destination[i], &st) == 0) {
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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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@ -213,24 +205,17 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
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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(destination[i],
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&overwritten);
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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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}
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if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0)
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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 (path_list_has_path(&src_for_dst, destination[i]))
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bad = "multiple sources for the same target";
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else
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path_list_insert(destination[i], &src_for_dst);
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}
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next:
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if (bad) {
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if (ignore_errors) {
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if (--count > 0) {
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@ -242,33 +227,32 @@ next:
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}
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} else
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die ("%s, source=%s, destination=%s",
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bad, source[i], destination[i]);
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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",
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source[i], destination[i]);
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if (!show_only && modes[i] != INDEX &&
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rename(source[i], destination[i]) < 0 &&
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!ignore_errors)
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die ("renaming %s failed: %s",
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source[i], strerror(errno));
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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 (modes[i] == WORKING_DIRECTORY)
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if (mode == WORKING_DIRECTORY)
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continue;
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if (cache_name_pos(source[i], strlen(source[i])) >= 0) {
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path_list_insert(source[i], &deleted);
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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, destination[i]))
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path_list_insert(destination[i], &changed);
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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(destination[i], &added);
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path_list_insert(dst, &added);
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} else
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path_list_insert(destination[i], &added);
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path_list_insert(dst, &added);
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}
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if (show_only) {
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