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revision: introduce struct to handle exclusions 

The functions that handle exclusion of refs work on a single string
list. We're about to add a second mechanism for excluding refs though,
and it makes sense to reuse much of the same architecture for both kinds
of exclusion.

Introduce a new `struct ref_exclusions` that encapsulates all the logic
related to excluding refs and move the `struct string_list` that holds
all wildmatch patterns of excluded refs into it. Rename functions that
operate on this struct to match its name.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
This commit is contained in:
Patrick Steinhardt 2022-11-17 06:46:51 +01:00 committed by Taylor Blau
parent 05b9425960
commit 1e9f273ac0
3 changed files with 47 additions and 36 deletions
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8
builtin/rev-parse.c
View File

@ -39,7 +39,7 @@ static int abbrev_ref_strict;
static int output_sq;
static int stuck_long;
static struct string_list *ref_excludes;
static struct ref_exclusions ref_excludes = REF_EXCLUSIONS_INIT;
/*
* Some arguments are relevant "revision" arguments,
@ -198,7 +198,7 @@ static int show_default(void)
static int show_reference(const char *refname, const struct object_id *oid,
int flag UNUSED, void *cb_data UNUSED)
{
if (ref_excluded(ref_excludes, refname))
if (ref_excluded(&ref_excludes, refname))
return 0;
show_rev(NORMAL, oid, refname);
return 0;
@ -585,7 +585,7 @@ static void handle_ref_opt(const char *pattern, const char *prefix)
for_each_glob_ref_in(show_reference, pattern, prefix, NULL);
else
for_each_ref_in(prefix, show_reference, NULL);
clear_ref_exclusion(&ref_excludes);
clear_ref_exclusions(&ref_excludes);
}
enum format_type {
@ -863,7 +863,7 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
}
if (!strcmp(arg, "--all")) {
for_each_ref(show_reference, NULL);
clear_ref_exclusion(&ref_excludes);
clear_ref_exclusions(&ref_excludes);
continue;
}
if (skip_prefix(arg, "--disambiguate=", &arg)) {

48
revision.c
View File

@ -1517,35 +1517,30 @@ static void add_rev_cmdline_list(struct rev_info *revs,
}
}
int ref_excluded(struct string_list *ref_excludes, const char *path)
int ref_excluded(const struct ref_exclusions *exclusions, const char *path)
{
struct string_list_item *item;
if (!ref_excludes)
return 0;
for_each_string_list_item(item, ref_excludes) {
for_each_string_list_item(item, &exclusions->excluded_refs) {
if (!wildmatch(item->string, path, 0))
return 1;
}
return 0;
}
void clear_ref_exclusion(struct string_list **ref_excludes_p)
void init_ref_exclusions(struct ref_exclusions *exclusions)
{
if (*ref_excludes_p) {
string_list_clear(*ref_excludes_p, 0);
free(*ref_excludes_p);
}
*ref_excludes_p = NULL;
struct ref_exclusions blank = REF_EXCLUSIONS_INIT;
memcpy(exclusions, &blank, sizeof(*exclusions));
}
void add_ref_exclusion(struct string_list **ref_excludes_p, const char *exclude)
void clear_ref_exclusions(struct ref_exclusions *exclusions)
{
if (!*ref_excludes_p) {
CALLOC_ARRAY(*ref_excludes_p, 1);
(*ref_excludes_p)->strdup_strings = 1;
}
string_list_append(*ref_excludes_p, exclude);
string_list_clear(&exclusions->excluded_refs, 0);
}
void add_ref_exclusion(struct ref_exclusions *exclusions, const char *exclude)
{
string_list_append(&exclusions->excluded_refs, exclude);
}
struct all_refs_cb {
@ -1563,7 +1558,7 @@ static int handle_one_ref(const char *path, const struct object_id *oid,
struct all_refs_cb *cb = cb_data;
struct object *object;
if (ref_excluded(cb->all_revs->ref_excludes, path))
if (ref_excluded(&cb->all_revs->ref_excludes, path))
return 0;
object = get_reference(cb->all_revs, path, oid, cb->all_flags);
@ -1901,6 +1896,7 @@ void repo_init_revisions(struct repository *r,
init_display_notes(&revs->notes_opt);
list_objects_filter_init(&revs->filter);
init_ref_exclusions(&revs->ref_excludes);
}
static void add_pending_commit_list(struct rev_info *revs,
@ -2689,10 +2685,10 @@ static int handle_revision_pseudo_opt(struct rev_info *revs,
init_all_refs_cb(&cb, revs, *flags);
other_head_refs(handle_one_ref, &cb);
}
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (!strcmp(arg, "--branches")) {
handle_refs(refs, revs, *flags, refs_for_each_branch_ref);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (!strcmp(arg, "--bisect")) {
read_bisect_terms(&term_bad, &term_good);
handle_refs(refs, revs, *flags, for_each_bad_bisect_ref);
@ -2701,15 +2697,15 @@ static int handle_revision_pseudo_opt(struct rev_info *revs,
revs->bisect = 1;
} else if (!strcmp(arg, "--tags")) {
handle_refs(refs, revs, *flags, refs_for_each_tag_ref);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (!strcmp(arg, "--remotes")) {
handle_refs(refs, revs, *flags, refs_for_each_remote_ref);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if ((argcount = parse_long_opt("glob", argv, &optarg))) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref(handle_one_ref, optarg, &cb);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
return argcount;
} else if ((argcount = parse_long_opt("exclude", argv, &optarg))) {
add_ref_exclusion(&revs->ref_excludes, optarg);
@ -2718,17 +2714,17 @@ static int handle_revision_pseudo_opt(struct rev_info *revs,
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/heads/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (skip_prefix(arg, "--tags=", &optarg)) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/tags/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (skip_prefix(arg, "--remotes=", &optarg)) {
struct all_refs_cb cb;
init_all_refs_cb(&cb, revs, *flags);
for_each_glob_ref_in(handle_one_ref, optarg, "refs/remotes/", &cb);
clear_ref_exclusion(&revs->ref_excludes);
clear_ref_exclusions(&revs->ref_excludes);
} else if (!strcmp(arg, "--reflog")) {
add_reflogs_to_pending(revs, *flags);
} else if (!strcmp(arg, "--indexed-objects")) {

27
revision.h
View File

@ -81,6 +81,21 @@ struct rev_cmdline_info {
} *rev;
};
struct ref_exclusions {
/*
* Excluded refs is a list of wildmatch patterns. If any of the
* patterns matches, the reference will be excluded.
*/
struct string_list excluded_refs;
};
/**
* Initialize a `struct ref_exclusions` with a macro.
*/
#define REF_EXCLUSIONS_INIT { \
.excluded_refs = STRING_LIST_INIT_DUP, \
}
struct oidset;
struct topo_walk_info;
@ -103,7 +118,7 @@ struct rev_info {
struct list_objects_filter_options filter;
/* excluding from --branches, --refs, etc. expansion */
struct string_list *ref_excludes;
struct ref_exclusions ref_excludes;
/* Basic information */
const char *prefix;
@ -439,12 +454,12 @@ void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees)
void show_object_with_name(FILE *, struct object *, const char *);
/**
* Helpers to check if a "struct string_list" item matches with
* wildmatch().
* Helpers to check if a reference should be excluded.
*/
int ref_excluded(struct string_list *, const char *path);
void clear_ref_exclusion(struct string_list **);
void add_ref_exclusion(struct string_list **, const char *exclude);
int ref_excluded(const struct ref_exclusions *exclusions, const char *path);
void init_ref_exclusions(struct ref_exclusions *);
void clear_ref_exclusions(struct ref_exclusions *);
void add_ref_exclusion(struct ref_exclusions *, const char *exclude);
/**
* This function can be used if you want to add commit objects as revision