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authorJohannes Schindelin <Johannes.Schindelin@gmx.de>2006-08-19 14:52:21 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-08-21 21:15:52 (GMT)
commit60a6bf5f53635005f4f68d8b8a33172309193623 (patch)
treec15e8a2a52ce0b3205feb47c87ea5b647c6b6f36
parent6e17886d376ee8480cc9a8b9bc5046f2d721565f (diff)
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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>
-rw-r--r--builtin-mv.c104
1 files changed, 44 insertions, 60 deletions
diff --git a/builtin-mv.c b/builtin-mv.c
index e3bc7a8..ff882be 100644
--- a/builtin-mv.c
+++ b/builtin-mv.c
@@ -129,48 +129,43 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
/* Checking */
for (i = 0; i < count; i++) {
- int length;
+ const char *src = source[i], *dst = destination[i];
+ int length, src_is_dir;
const char *bad = NULL;
if (show_only)
- printf("Checking rename of '%s' to '%s'\n",
- source[i], destination[i]);
+ printf("Checking rename of '%s' to '%s'\n", src, dst);
- if (lstat(source[i], &st) < 0)
+ length = strlen(src);
+ if (lstat(src, &st) < 0)
bad = "bad source";
-
- if (!bad &&
- (length = strlen(source[i])) >= 0 &&
- !strncmp(destination[i], source[i], length) &&
- (destination[i][length] == 0 || destination[i][length] == '/'))
+ else if (!strncmp(src, dst, length) &&
+ (dst[length] == 0 || dst[length] == '/')) {
bad = "can not move directory into itself";
-
- if (S_ISDIR(st.st_mode)) {
- const char *dir = source[i], *dest_dir = destination[i];
- int first, last, len = strlen(dir);
-
- if (lstat(dest_dir, &st) == 0) {
- bad = "cannot move directory over file";
- goto next;
- }
+ } else if ((src_is_dir = S_ISDIR(st.st_mode))
+ && lstat(dst, &st) == 0)
+ bad = "cannot move directory over file";
+ else if (src_is_dir) {
+ int first, last;
modes[i] = WORKING_DIRECTORY;
- first = cache_name_pos(source[i], len);
+ first = cache_name_pos(src, length);
if (first >= 0)
- die ("Huh? %s/ is in index?", dir);
+ die ("Huh? %s/ is in index?", src);
first = -1 - first;
for (last = first; last < active_nr; last++) {
const char *path = active_cache[last]->name;
- if (strncmp(path, dir, len) || path[len] != '/')
+ if (strncmp(path, src, length)
+ || path[length] != '/')
break;
}
if (last - first < 1)
bad = "source directory is empty";
- else if (!bad) {
- int j, dst_len = strlen(dest_dir);
+ else {
+ int j, dst_len;
if (last - first > 0) {
source = realloc(source,
@@ -184,24 +179,21 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
* sizeof(enum update_mode));
}
- dest_dir = add_slash(dest_dir);
+ dst = add_slash(dst);
+ dst_len = strlen(dst) - 1;
for (j = 0; j < last - first; j++) {
const char *path =
active_cache[first + j]->name;
source[count + j] = path;
destination[count + j] =
- prefix_path(dest_dir, dst_len,
- path + len);
+ prefix_path(dst, dst_len,
+ path + length);
modes[count + j] = INDEX;
}
count += last - first;
}
-
- goto next;
- }
-
- if (!bad && lstat(destination[i], &st) == 0) {
+ } else if (lstat(dst, &st) == 0) {
bad = "destination exists";
if (force) {
/*
@@ -213,24 +205,17 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
" will overwrite!\n",
bad);
bad = NULL;
- path_list_insert(destination[i],
- &overwritten);
+ path_list_insert(dst, &overwritten);
} else
bad = "Cannot overwrite";
}
- }
-
- if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0)
+ } else if (cache_name_pos(src, length) < 0)
bad = "not under version control";
+ else if (path_list_has_path(&src_for_dst, dst))
+ bad = "multiple sources for the same target";
+ else
+ path_list_insert(dst, &src_for_dst);
- 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);
- }
-
-next:
if (bad) {
if (ignore_errors) {
if (--count > 0) {
@@ -242,33 +227,32 @@ next:
}
} else
die ("%s, source=%s, destination=%s",
- bad, source[i], destination[i]);
+ bad, src, dst);
}
}
for (i = 0; i < count; i++) {
+ const char *src = source[i], *dst = destination[i];
+ enum update_mode mode = modes[i];
if (show_only || verbose)
- printf("Renaming %s to %s\n",
- source[i], destination[i]);
- if (!show_only && modes[i] != INDEX &&
- rename(source[i], destination[i]) < 0 &&
- !ignore_errors)
- die ("renaming %s failed: %s",
- source[i], strerror(errno));
-
- if (modes[i] == WORKING_DIRECTORY)
+ printf("Renaming %s to %s\n", src, dst);
+ if (!show_only && mode != INDEX &&
+ rename(src, dst) < 0 && !ignore_errors)
+ die ("renaming %s failed: %s", src, strerror(errno));
+
+ if (mode == WORKING_DIRECTORY)
continue;
- if (cache_name_pos(source[i], strlen(source[i])) >= 0) {
- path_list_insert(source[i], &deleted);
+ if (cache_name_pos(src, strlen(src)) >= 0) {
+ path_list_insert(src, &deleted);
/* destination can be a directory with 1 file inside */
- if (path_list_has_path(&overwritten, destination[i]))
- path_list_insert(destination[i], &changed);
+ if (path_list_has_path(&overwritten, dst))
+ path_list_insert(dst, &changed);
else
- path_list_insert(destination[i], &added);
+ path_list_insert(dst, &added);
} else
- path_list_insert(destination[i], &added);
+ path_list_insert(dst, &added);
}
if (show_only) {