int read_directory(struct dir_struct *dir, const char *path, int len, const struct pathspec *pathspec)
{
struct path_simplify *simplify;
/*
* Check out create_simplify()
*/
if (pathspec)
GUARD_PATHSPEC(pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE);
if (has_symlink_leading_path(path, len))
return dir->nr;
simplify = create_simplify(pathspec ? pathspec->_raw : NULL);
if (!len || treat_leading_path(dir, path, len, simplify))
read_directory_recursive(dir, path, len, 0, simplify);
free_simplify(simplify);
qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
return dir->nr;
}
int read_directory(struct dir_struct *dir, const char *path, int len, const struct pathspec *pathspec)
{
struct path_simplify *simplify;
/*
* Check out create_simplify()
*/
if (pathspec)
GUARD_PATHSPEC(pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
if (has_symlink_leading_path(path, len))
return dir->nr;
/*
* exclude patterns are treated like positive ones in
* create_simplify. Usually exclude patterns should be a
* subset of positive ones, which has no impacts on
* create_simplify().
*/
simplify = create_simplify(pathspec ? pathspec->_raw : NULL);
if (!len || treat_leading_path(dir, path, len, simplify))
read_directory_recursive(dir, path, len, 0, simplify);
free_simplify(simplify);
qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name);
qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name);
return dir->nr;
}
static int builtin_diff_b_f(struct rev_info *revs,
int argc, const char **argv,
struct blobinfo *blob)
{
/* Blob vs file in the working tree*/
struct stat st;
const char *path;
if (argc > 1)
usage(builtin_diff_usage);
GUARD_PATHSPEC(&revs->prune_data, PATHSPEC_FROMTOP | PATHSPEC_LITERAL);
path = revs->prune_data.items[0].match;
if (lstat(path, &st))
die_errno(_("failed to stat '%s'"), path);
if (!(S_ISREG(st.st_mode) || S_ISLNK(st.st_mode)))
die(_("'%s': not a regular file or symlink"), path);
diff_set_mnemonic_prefix(&revs->diffopt, "o/", "w/");
if (blob[0].mode == S_IFINVALID)
blob[0].mode = canon_mode(st.st_mode);
stuff_change(&revs->diffopt,
blob[0].mode, canon_mode(st.st_mode),
blob[0].sha1, null_sha1,
1, 0,
path, path);
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
return 0;
}
/*
* Given a name and a list of pathspecs, returns the nature of the
* closest (i.e. most specific) match of the name to any of the
* pathspecs.
*
* The caller typically calls this multiple times with the same
* pathspec and seen[] array but with different name/namelen
* (e.g. entries from the index) and is interested in seeing if and
* how each pathspec matches all the names it calls this function
* with. A mark is left in the seen[] array for each pathspec element
* indicating the closest type of match that element achieved, so if
* seen[n] remains zero after multiple invocations, that means the nth
* pathspec did not match any names, which could indicate that the
* user mistyped the nth pathspec.
*/
int match_pathspec_depth(const struct pathspec *ps,
const char *name, int namelen,
int prefix, char *seen)
{
int i, retval = 0;
GUARD_PATHSPEC(ps,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE);
if (!ps->nr) {
if (!ps->recursive ||
!(ps->magic & PATHSPEC_MAXDEPTH) ||
ps->max_depth == -1)
return MATCHED_RECURSIVELY;
if (within_depth(name, namelen, 0, ps->max_depth))
return MATCHED_EXACTLY;
else
return 0;
}
name += prefix;
namelen -= prefix;
for (i = ps->nr - 1; i >= 0; i--) {
int how;
if (seen && seen[i] == MATCHED_EXACTLY)
continue;
how = match_pathspec_item(ps->items+i, prefix, name, namelen);
if (ps->recursive &&
(ps->magic & PATHSPEC_MAXDEPTH) &&
ps->max_depth != -1 &&
how && how != MATCHED_FNMATCH) {
int len = ps->items[i].len;
if (name[len] == '/')
len++;
if (within_depth(name+len, namelen-len, 0, ps->max_depth))
how = MATCHED_EXACTLY;
else
how = 0;
}
if (how) {
if (retval < how)
retval = how;
if (seen && seen[i] < how)
seen[i] = how;
}
}
return retval;
}
static size_t common_prefix_len(const struct pathspec *pathspec)
{
int n;
size_t max = 0;
/*
* ":(icase)path" is treated as a pathspec full of
* wildcard. In other words, only prefix is considered common
* prefix. If the pathspec is abc/foo abc/bar, running in
* subdir xyz, the common prefix is still xyz, not xuz/abc as
* in non-:(icase).
*/
GUARD_PATHSPEC(pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
for (n = 0; n < pathspec->nr; n++) {
size_t i = 0, len = 0, item_len;
if (pathspec->items[n].magic & PATHSPEC_EXCLUDE)
continue;
if (pathspec->items[n].magic & PATHSPEC_ICASE)
item_len = pathspec->items[n].prefix;
else
item_len = pathspec->items[n].nowildcard_len;
while (i < item_len && (n == 0 || i < max)) {
char c = pathspec->items[n].match[i];
if (c != pathspec->items[0].match[i])
break;
if (c == '/')
len = i + 1;
i++;
}
if (n == 0 || len < max) {
max = len;
if (!max)
break;
}
}
return max;
}
int cmd_add(int argc, const char **argv, const char *prefix)
{
int exit_status = 0;
struct pathspec pathspec;
struct dir_struct dir;
int flags;
int add_new_files;
int require_pathspec;
char *seen = NULL;
struct lock_file lock_file = LOCK_INIT;
git_config(add_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_add_options,
builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
if (patch_interactive)
add_interactive = 1;
if (add_interactive)
exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
if (edit_interactive)
return(edit_patch(argc, argv, prefix));
argc--;
argv++;
if (0 <= addremove_explicit)
addremove = addremove_explicit;
else if (take_worktree_changes && ADDREMOVE_DEFAULT)
addremove = 0; /* "-u" was given but not "-A" */
if (addremove && take_worktree_changes)
die(_("-A and -u are mutually incompatible"));
if (!take_worktree_changes && addremove_explicit < 0 && argc)
/* Turn "git add pathspec..." to "git add -A pathspec..." */
addremove = 1;
if (!show_only && ignore_missing)
die(_("Option --ignore-missing can only be used together with --dry-run"));
if (chmod_arg && ((chmod_arg[0] != '-' && chmod_arg[0] != '+') ||
chmod_arg[1] != 'x' || chmod_arg[2]))
die(_("--chmod param '%s' must be either -x or +x"), chmod_arg);
add_new_files = !take_worktree_changes && !refresh_only && !add_renormalize;
require_pathspec = !(take_worktree_changes || (0 < addremove_explicit));
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
(show_only ? ADD_CACHE_PRETEND : 0) |
(intent_to_add ? ADD_CACHE_INTENT : 0) |
(ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
(!(addremove || take_worktree_changes)
? ADD_CACHE_IGNORE_REMOVAL : 0));
if (require_pathspec && argc == 0) {
fprintf(stderr, _("Nothing specified, nothing added.\n"));
fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
return 0;
}
/*
* Check the "pathspec '%s' did not match any files" block
* below before enabling new magic.
*/
parse_pathspec(&pathspec, PATHSPEC_ATTR,
PATHSPEC_PREFER_FULL |
PATHSPEC_SYMLINK_LEADING_PATH,
prefix, argv);
if (read_cache_preload(&pathspec) < 0)
die(_("index file corrupt"));
die_in_unpopulated_submodule(&the_index, prefix);
die_path_inside_submodule(&the_index, &pathspec);
if (add_new_files) {
int baselen;
/* Set up the default git porcelain excludes */
memset(&dir, 0, sizeof(dir));
if (!ignored_too) {
dir.flags |= DIR_COLLECT_IGNORED;
setup_standard_excludes(&dir);
}
/* This picks up the paths that are not tracked */
baselen = fill_directory(&dir, &the_index, &pathspec);
if (pathspec.nr)
seen = prune_directory(&dir, &pathspec, baselen);
}
if (refresh_only) {
refresh(verbose, &pathspec);
goto finish;
}
if (pathspec.nr) {
int i;
if (!seen)
seen = find_pathspecs_matching_against_index(&pathspec, &the_index);
/*
* file_exists() assumes exact match
*/
GUARD_PATHSPEC(&pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
for (i = 0; i < pathspec.nr; i++) {
const char *path = pathspec.items[i].match;
if (pathspec.items[i].magic & PATHSPEC_EXCLUDE)
continue;
if (!seen[i] && path[0] &&
((pathspec.items[i].magic &
(PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
!file_exists(path))) {
if (ignore_missing) {
int dtype = DT_UNKNOWN;
if (is_excluded(&dir, &the_index, path, &dtype))
dir_add_ignored(&dir, &the_index,
path, pathspec.items[i].len);
} else
die(_("pathspec '%s' did not match any files"),
pathspec.items[i].original);
}
}
free(seen);
}
plug_bulk_checkin();
if (add_renormalize)
exit_status |= renormalize_tracked_files(&pathspec, flags);
else
exit_status |= add_files_to_cache(prefix, &pathspec, flags);
if (add_new_files)
exit_status |= add_files(&dir, flags);
if (chmod_arg && pathspec.nr)
chmod_pathspec(&pathspec, chmod_arg[0]);
unplug_bulk_checkin();
finish:
if (write_locked_index(&the_index, &lock_file,
COMMIT_LOCK | SKIP_IF_UNCHANGED))
die(_("Unable to write new index file"));
UNLEAK(pathspec);
UNLEAK(dir);
return exit_status;
}
/*
* Given a name and a list of pathspecs, returns the nature of the
* closest (i.e. most specific) match of the name to any of the
* pathspecs.
*
* The caller typically calls this multiple times with the same
* pathspec and seen[] array but with different name/namelen
* (e.g. entries from the index) and is interested in seeing if and
* how each pathspec matches all the names it calls this function
* with. A mark is left in the seen[] array for each pathspec element
* indicating the closest type of match that element achieved, so if
* seen[n] remains zero after multiple invocations, that means the nth
* pathspec did not match any names, which could indicate that the
* user mistyped the nth pathspec.
*/
static int do_match_pathspec(const struct pathspec *ps,
const char *name, int namelen,
int prefix, char *seen,
unsigned flags)
{
int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
GUARD_PATHSPEC(ps,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
if (!ps->nr) {
if (!ps->recursive ||
!(ps->magic & PATHSPEC_MAXDEPTH) ||
ps->max_depth == -1)
return MATCHED_RECURSIVELY;
if (within_depth(name, namelen, 0, ps->max_depth))
return MATCHED_EXACTLY;
else
return 0;
}
name += prefix;
namelen -= prefix;
for (i = ps->nr - 1; i >= 0; i--) {
int how;
if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
continue;
if (seen && seen[i] == MATCHED_EXACTLY)
continue;
/*
* Make exclude patterns optional and never report
* "pathspec ':(exclude)foo' matches no files"
*/
if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
seen[i] = MATCHED_FNMATCH;
how = match_pathspec_item(ps->items+i, prefix, name,
namelen, flags);
if (ps->recursive &&
(ps->magic & PATHSPEC_MAXDEPTH) &&
ps->max_depth != -1 &&
how && how != MATCHED_FNMATCH) {
int len = ps->items[i].len;
if (name[len] == '/')
len++;
if (within_depth(name+len, namelen-len, 0, ps->max_depth))
how = MATCHED_EXACTLY;
else
how = 0;
}
if (how) {
if (retval < how)
retval = how;
if (seen && seen[i] < how)
seen[i] = how;
}
}
return retval;
}
int cmd_add(int argc, const char **argv, const char *prefix)
{
int exit_status = 0;
int newfd;
struct pathspec pathspec;
struct dir_struct dir;
int flags;
int add_new_files;
int require_pathspec;
char *seen = NULL;
int implicit_dot = 0;
struct update_callback_data update_data;
git_config(add_config, NULL);
argc = parse_options(argc, argv, prefix, builtin_add_options,
builtin_add_usage, PARSE_OPT_KEEP_ARGV0);
if (patch_interactive)
add_interactive = 1;
if (add_interactive)
exit(interactive_add(argc - 1, argv + 1, prefix, patch_interactive));
if (edit_interactive)
return(edit_patch(argc, argv, prefix));
argc--;
argv++;
if (0 <= addremove_explicit)
addremove = addremove_explicit;
else if (take_worktree_changes && ADDREMOVE_DEFAULT)
addremove = 0; /* "-u" was given but not "-A" */
if (addremove && take_worktree_changes)
die(_("-A and -u are mutually incompatible"));
/*
* Warn when "git add pathspec..." was given without "-u" or "-A"
* and pathspec... covers a removed path.
*/
memset(&update_data, 0, sizeof(update_data));
if (!take_worktree_changes && addremove_explicit < 0)
update_data.warn_add_would_remove = 1;
if (!take_worktree_changes && addremove_explicit < 0 && argc)
/*
* Turn "git add pathspec..." to "git add -A pathspec..."
* in Git 2.0 but not yet
*/
; /* addremove = 1; */
if (!show_only && ignore_missing)
die(_("Option --ignore-missing can only be used together with --dry-run"));
if (addremove) {
option_with_implicit_dot = "--all";
short_option_with_implicit_dot = "-A";
}
if (take_worktree_changes) {
option_with_implicit_dot = "--update";
short_option_with_implicit_dot = "-u";
}
if (option_with_implicit_dot && !argc) {
static const char *here[2] = { ".", NULL };
argc = 1;
argv = here;
implicit_dot = 1;
}
add_new_files = !take_worktree_changes && !refresh_only;
require_pathspec = !take_worktree_changes;
newfd = hold_locked_index(&lock_file, 1);
flags = ((verbose ? ADD_CACHE_VERBOSE : 0) |
(show_only ? ADD_CACHE_PRETEND : 0) |
(intent_to_add ? ADD_CACHE_INTENT : 0) |
(ignore_add_errors ? ADD_CACHE_IGNORE_ERRORS : 0) |
(!(addremove || take_worktree_changes)
? ADD_CACHE_IGNORE_REMOVAL : 0)) |
(implicit_dot ? ADD_CACHE_IMPLICIT_DOT : 0);
if (require_pathspec && argc == 0) {
fprintf(stderr, _("Nothing specified, nothing added.\n"));
fprintf(stderr, _("Maybe you wanted to say 'git add .'?\n"));
return 0;
}
if (read_cache() < 0)
die(_("index file corrupt"));
/*
* Check the "pathspec '%s' did not match any files" block
* below before enabling new magic.
*/
parse_pathspec(&pathspec, 0,
PATHSPEC_PREFER_FULL |
PATHSPEC_SYMLINK_LEADING_PATH |
PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE,
prefix, argv);
if (add_new_files) {
int baselen;
struct pathspec empty_pathspec;
/* Set up the default git porcelain excludes */
memset(&dir, 0, sizeof(dir));
if (!ignored_too) {
dir.flags |= DIR_COLLECT_IGNORED;
setup_standard_excludes(&dir);
}
memset(&empty_pathspec, 0, sizeof(empty_pathspec));
/* This picks up the paths that are not tracked */
baselen = fill_directory(&dir, implicit_dot ? &empty_pathspec : &pathspec);
if (pathspec.nr)
seen = prune_directory(&dir, &pathspec, baselen,
implicit_dot ? WARN_IMPLICIT_DOT : 0);
}
if (refresh_only) {
refresh(verbose, &pathspec);
goto finish;
}
if (implicit_dot && prefix)
refresh_cache(REFRESH_QUIET);
if (pathspec.nr) {
int i;
if (!seen)
seen = find_pathspecs_matching_against_index(&pathspec);
/*
* file_exists() assumes exact match
*/
GUARD_PATHSPEC(&pathspec,
PATHSPEC_FROMTOP |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE);
for (i = 0; i < pathspec.nr; i++) {
const char *path = pathspec.items[i].match;
if (!seen[i] &&
((pathspec.items[i].magic &
(PATHSPEC_GLOB | PATHSPEC_ICASE)) ||
!file_exists(path))) {
if (ignore_missing) {
int dtype = DT_UNKNOWN;
if (is_excluded(&dir, path, &dtype))
dir_add_ignored(&dir, path, pathspec.items[i].len);
} else
die(_("pathspec '%s' did not match any files"),
pathspec.items[i].original);
}
}
free(seen);
}
plug_bulk_checkin();
if ((flags & ADD_CACHE_IMPLICIT_DOT) && prefix) {
/*
* Check for modified files throughout the worktree so
* update_callback has a chance to warn about changes
* outside the cwd.
*/
update_data.implicit_dot = prefix;
update_data.implicit_dot_len = strlen(prefix);
free_pathspec(&pathspec);
memset(&pathspec, 0, sizeof(pathspec));
}
update_data.flags = flags & ~ADD_CACHE_IMPLICIT_DOT;
update_files_in_cache(prefix, &pathspec, &update_data);
exit_status |= !!update_data.add_errors;
if (add_new_files)
exit_status |= add_files(&dir, flags);
unplug_bulk_checkin();
finish:
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
commit_locked_index(&lock_file))
die(_("Unable to write new index file"));
}
return exit_status;
}
/*
* Is a tree entry interesting given the pathspec we have?
*
* Pre-condition: either baselen == base_offset (i.e. empty path)
* or base[baselen-1] == '/' (i.e. with trailing slash).
*/
static enum interesting do_match(const struct name_entry *entry,
struct strbuf *base, int base_offset,
const struct pathspec *ps,
int exclude)
{
int i;
int pathlen, baselen = base->len - base_offset;
enum interesting never_interesting = ps->has_wildcard ?
entry_not_interesting : all_entries_not_interesting;
GUARD_PATHSPEC(ps,
PATHSPEC_FROMTOP |
PATHSPEC_MAXDEPTH |
PATHSPEC_LITERAL |
PATHSPEC_GLOB |
PATHSPEC_ICASE |
PATHSPEC_EXCLUDE);
if (!ps->nr) {
if (!ps->recursive ||
!(ps->magic & PATHSPEC_MAXDEPTH) ||
ps->max_depth == -1)
return all_entries_interesting;
return within_depth(base->buf + base_offset, baselen,
!!S_ISDIR(entry->mode),
ps->max_depth) ?
entry_interesting : entry_not_interesting;
}
pathlen = tree_entry_len(entry);
for (i = ps->nr - 1; i >= 0; i--) {
const struct pathspec_item *item = ps->items+i;
const char *match = item->match;
const char *base_str = base->buf + base_offset;
int matchlen = item->len, matched = 0;
if ((!exclude && item->magic & PATHSPEC_EXCLUDE) ||
( exclude && !(item->magic & PATHSPEC_EXCLUDE)))
continue;
if (baselen >= matchlen) {
/* If it doesn't match, move along... */
if (!match_dir_prefix(item, base_str, match, matchlen))
goto match_wildcards;
if (!ps->recursive ||
!(ps->magic & PATHSPEC_MAXDEPTH) ||
ps->max_depth == -1)
return all_entries_interesting;
return within_depth(base_str + matchlen + 1,
baselen - matchlen - 1,
!!S_ISDIR(entry->mode),
ps->max_depth) ?
entry_interesting : entry_not_interesting;
}
/* Either there must be no base, or the base must match. */
if (baselen == 0 || !basecmp(item, base_str, match, baselen)) {
if (match_entry(item, entry, pathlen,
match + baselen, matchlen - baselen,
&never_interesting))
return entry_interesting;
if (item->nowildcard_len < item->len) {
if (!git_fnmatch(item, match + baselen, entry->path,
item->nowildcard_len - baselen))
return entry_interesting;
/*
* Match all directories. We'll try to
* match files later on.
*/
if (ps->recursive && S_ISDIR(entry->mode))
return entry_interesting;
}
continue;
}
match_wildcards:
if (item->nowildcard_len == item->len)
continue;
if (item->nowildcard_len &&
!match_wildcard_base(item, base_str, baselen, &matched))
continue;
/*
* Concatenate base and entry->path into one and do
* fnmatch() on it.
*
* While we could avoid concatenation in certain cases
* [1], which saves a memcpy and potentially a
* realloc, it turns out not worth it. Measurement on
* linux-2.6 does not show any clear improvements,
* partly because of the nowildcard_len optimization
* in git_fnmatch(). Avoid micro-optimizations here.
*
* [1] if match_wildcard_base() says the base
* directory is already matched, we only need to match
* the rest, which is shorter so _in theory_ faster.
*/
strbuf_add(base, entry->path, pathlen);
if (!git_fnmatch(item, match, base->buf + base_offset,
item->nowildcard_len)) {
strbuf_setlen(base, base_offset + baselen);
return entry_interesting;
}
strbuf_setlen(base, base_offset + baselen);
/*
* Match all directories. We'll try to match files
* later on.
* max_depth is ignored but we may consider support it
* in future, see
* http://thread.gmane.org/gmane.comp.version-control.git/163757/focus=163840
*/
if (ps->recursive && S_ISDIR(entry->mode))
return entry_interesting;
}
return never_interesting; /* No matches */
}
static void try_to_follow_renames(const struct object_id *old_oid,
const struct object_id *new_oid,
struct strbuf *base, struct diff_options *opt)
{
struct diff_options diff_opts;
struct diff_queue_struct *q = &diff_queued_diff;
struct diff_filepair *choice;
int i;
/*
* follow-rename code is very specific, we need exactly one
* path. Magic that matches more than one path is not
* supported.
*/
GUARD_PATHSPEC(&opt->pathspec, PATHSPEC_FROMTOP | PATHSPEC_LITERAL);
#if 0
/*
* We should reject wildcards as well. Unfortunately we
* haven't got a reliable way to detect that 'foo\*bar' in
* fact has no wildcards. nowildcard_len is merely a hint for
* optimization. Let it slip for now until wildmatch is taught
* about dry-run mode and returns wildcard info.
*/
if (opt->pathspec.has_wildcard)
die("BUG:%s:%d: wildcards are not supported",
__FILE__, __LINE__);
#endif
/* Remove the file creation entry from the diff queue, and remember it */
choice = q->queue[0];
q->nr = 0;
diff_setup(&diff_opts);
diff_opts.flags.recursive = 1;
diff_opts.flags.find_copies_harder = 1;
diff_opts.output_format = DIFF_FORMAT_NO_OUTPUT;
diff_opts.single_follow = opt->pathspec.items[0].match;
diff_opts.break_opt = opt->break_opt;
diff_opts.rename_score = opt->rename_score;
diff_setup_done(&diff_opts);
ll_diff_tree_oid(old_oid, new_oid, base, &diff_opts);
diffcore_std(&diff_opts);
clear_pathspec(&diff_opts.pathspec);
/* Go through the new set of filepairing, and see if we find a more interesting one */
opt->found_follow = 0;
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
/*
* Found a source? Not only do we use that for the new
* diff_queued_diff, we will also use that as the path in
* the future!
*/
if ((p->status == 'R' || p->status == 'C') &&
!strcmp(p->two->path, opt->pathspec.items[0].match)) {
const char *path[2];
/* Switch the file-pairs around */
q->queue[i] = choice;
choice = p;
/* Update the path we use from now on.. */
path[0] = p->one->path;
path[1] = NULL;
clear_pathspec(&opt->pathspec);
parse_pathspec(&opt->pathspec,
PATHSPEC_ALL_MAGIC & ~PATHSPEC_LITERAL,
PATHSPEC_LITERAL_PATH, "", path);
/*
* The caller expects us to return a set of vanilla
* filepairs to let a later call to diffcore_std()
* it makes to sort the renames out (among other
* things), but we already have found renames
* ourselves; signal diffcore_std() not to muck with
* rename information.
*/
opt->found_follow = 1;
break;
}
}
/*
* Then, discard all the non-relevant file pairs...
*/
for (i = 0; i < q->nr; i++) {
struct diff_filepair *p = q->queue[i];
diff_free_filepair(p);
}
/*
* .. and re-instate the one we want (which might be either the
* original one, or the rename/copy we found)
*/
q->queue[0] = choice;
q->nr = 1;
}
int cmd_diff(int argc, const char **argv, const char *prefix)
{
int i;
struct rev_info rev;
struct object_array ent = OBJECT_ARRAY_INIT;
int blobs = 0, paths = 0;
const char *path = NULL;
struct blobinfo blob[2];
int nongit;
int result = 0;
/*
* We could get N tree-ish in the rev.pending_objects list.
* Also there could be M blobs there, and P pathspecs.
*
* N=0, M=0:
* cache vs files (diff-files)
* N=0, M=2:
* compare two random blobs. P must be zero.
* N=0, M=1, P=1:
* compare a blob with a working tree file.
*
* N=1, M=0:
* tree vs cache (diff-index --cached)
*
* N=2, M=0:
* tree vs tree (diff-tree)
*
* N=0, M=0, P=2:
* compare two filesystem entities (aka --no-index).
*
* Other cases are errors.
*/
prefix = setup_git_directory_gently(&nongit);
gitmodules_config();
git_config(git_diff_ui_config, NULL);
init_revisions(&rev, prefix);
/* If this is a no-index diff, just run it and exit there. */
diff_no_index(&rev, argc, argv, nongit, prefix);
/* Otherwise, we are doing the usual "git" diff */
rev.diffopt.skip_stat_unmatch = !!diff_auto_refresh_index;
/* Scale to real terminal size and respect statGraphWidth config */
rev.diffopt.stat_width = -1;
rev.diffopt.stat_graph_width = -1;
/* Default to let external and textconv be used */
DIFF_OPT_SET(&rev.diffopt, ALLOW_EXTERNAL);
DIFF_OPT_SET(&rev.diffopt, ALLOW_TEXTCONV);
if (nongit)
die(_("Not a git repository"));
argc = setup_revisions(argc, argv, &rev, NULL);
if (!rev.diffopt.output_format) {
rev.diffopt.output_format = DIFF_FORMAT_PATCH;
diff_setup_done(&rev.diffopt);
}
DIFF_OPT_SET(&rev.diffopt, RECURSIVE);
setup_diff_pager(&rev.diffopt);
/*
* Do we have --cached and not have a pending object, then
* default to HEAD by hand. Eek.
*/
if (!rev.pending.nr) {
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--"))
break;
else if (!strcmp(arg, "--cached") ||
!strcmp(arg, "--staged")) {
add_head_to_pending(&rev);
if (!rev.pending.nr) {
struct tree *tree;
tree = lookup_tree(EMPTY_TREE_SHA1_BIN);
add_pending_object(&rev, &tree->object, "HEAD");
}
break;
}
}
}
for (i = 0; i < rev.pending.nr; i++) {
struct object_array_entry *entry = &rev.pending.objects[i];
struct object *obj = entry->item;
const char *name = entry->name;
int flags = (obj->flags & UNINTERESTING);
if (!obj->parsed)
obj = parse_object(obj->sha1);
obj = deref_tag(obj, NULL, 0);
if (!obj)
die(_("invalid object '%s' given."), name);
if (obj->type == OBJ_COMMIT)
obj = &((struct commit *)obj)->tree->object;
if (obj->type == OBJ_TREE) {
obj->flags |= flags;
add_object_array(obj, name, &ent);
} else if (obj->type == OBJ_BLOB) {
if (2 <= blobs)
die(_("more than two blobs given: '%s'"), name);
hashcpy(blob[blobs].sha1, obj->sha1);
blob[blobs].name = name;
blob[blobs].mode = entry->mode;
blobs++;
} else {
die(_("unhandled object '%s' given."), name);
}
}
if (rev.prune_data.nr) {
/* builtin_diff_b_f() */
GUARD_PATHSPEC(&rev.prune_data, PATHSPEC_FROMTOP | PATHSPEC_LITERAL);
if (!path)
path = rev.prune_data.items[0].match;
paths += rev.prune_data.nr;
}
/*
* Now, do the arguments look reasonable?
*/
if (!ent.nr) {
switch (blobs) {
case 0:
result = builtin_diff_files(&rev, argc, argv);
break;
case 1:
if (paths != 1)
usage(builtin_diff_usage);
result = builtin_diff_b_f(&rev, argc, argv, blob, path);
break;
case 2:
if (paths)
usage(builtin_diff_usage);
result = builtin_diff_blobs(&rev, argc, argv, blob);
break;
default:
usage(builtin_diff_usage);
}
}
else if (blobs)
usage(builtin_diff_usage);
else if (ent.nr == 1)
result = builtin_diff_index(&rev, argc, argv);
else if (ent.nr == 2)
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0], &ent.objects[1]);
else if (ent.objects[0].item->flags & UNINTERESTING) {
/*
* diff A...B where there is at least one merge base
* between A and B. We have ent.objects[0] ==
* merge-base, ent.objects[ents-2] == A, and
* ent.objects[ents-1] == B. Show diff between the
* base and B. Note that we pick one merge base at
* random if there are more than one.
*/
result = builtin_diff_tree(&rev, argc, argv,
&ent.objects[0],
&ent.objects[ent.nr-1]);
} else
result = builtin_diff_combined(&rev, argc, argv,
ent.objects, ent.nr);
result = diff_result_code(&rev.diffopt, result);
if (1 < rev.diffopt.skip_stat_unmatch)
refresh_index_quietly();
return result;
}
