[PATCH v3 14/23] ref_filter: add is_atom_used function

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Delete all items related to split_on_whitespace from ref-filter
and add new function for handling the logic.
Now cat-file could invoke that function to implementing its logic.

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@xxxxxxxxx>
Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
Mentored by: Jeff King <peff@xxxxxxxx>
---
 builtin/cat-file.c |  8 +++-----
 ref-filter.c       | 17 +++++++++++++++--
 ref-filter.h       | 10 +++-------
 3 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 6db57e3533806..3a49b55a1cc2e 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -382,8 +382,7 @@ static int batch_objects(struct batch_options *opt)
 {
 	struct strbuf buf = STRBUF_INIT;
 	struct expand_data data;
-	int save_warning;
-	int retval = 0;
+	int save_warning, is_rest, retval = 0;
 
 	if (!opt->format.format)
 		opt->format.format = "%(objectname) %(objecttype) %(objectsize)";
@@ -395,8 +394,6 @@ static int batch_objects(struct batch_options *opt)
 	memset(&data, 0, sizeof(data));
 	opt->format.cat_file_data = &data;
 	verify_ref_format(&opt->format);
-	if (opt->cmdmode)
-		data.split_on_whitespace = 1;
 
 	if (opt->all_objects) {
 		struct object_info empty = OBJECT_INFO_INIT;
@@ -435,9 +432,10 @@ static int batch_objects(struct batch_options *opt)
 	 */
 	save_warning = warn_on_object_refname_ambiguity;
 	warn_on_object_refname_ambiguity = 0;
+	is_rest = opt->cmdmode || is_atom_used(&opt->format, "rest");
 
 	while (strbuf_getline(&buf, stdin) != EOF) {
-		if (data.split_on_whitespace) {
+		if (is_rest) {
 			/*
 			 * Split at first whitespace, tying off the beginning
 			 * of the string and saving the remainder (or NULL) in
diff --git a/ref-filter.c b/ref-filter.c
index 34a54db168265..4adeea6aad0da 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -493,8 +493,6 @@ static int parse_ref_filter_atom(const struct ref_format *format,
 		need_tagged = 1;
 	if (!strcmp(valid_atom[i].name, "symref"))
 		need_symref = 1;
-	if (cat_file_info && !strcmp(valid_atom[i].name, "rest"))
-		cat_file_info->split_on_whitespace = 1;
 	return at;
 }
 
@@ -730,6 +728,21 @@ static const char *find_next(const char *cp)
 	return NULL;
 }
 
+/* Search for atom in given format. */
+int is_atom_used(const struct ref_format *format, const char *atom)
+{
+	const char *cp, *sp;
+	for (cp = format->format; *cp && (sp = find_next(cp)); ) {
+		const char *ep = strchr(sp, ')');
+		int atom_len = ep - sp - 2;
+		sp += 2;
+		if (atom_len == strlen(atom) && !memcmp(sp, atom, atom_len))
+			return 1;
+		cp = ep + 1;
+	}
+	return 0;
+}
+
 /*
  * Make sure the format string is well formed, and parse out
  * the used atoms.
diff --git a/ref-filter.h b/ref-filter.h
index 5c6e019998716..fffc443726e28 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -86,13 +86,6 @@ struct expand_data {
 	const char *rest;
 	struct object_id delta_base_oid;
 
-	/*
-	 * Whether to split the input on whitespace before feeding it to
-	 * get_sha1; this is decided during the mark_query phase based on
-	 * whether we have a %(rest) token in our format.
-	 */
-	int split_on_whitespace;
-
 	/*
 	 * After a mark_query run, this object_info is set up to be
 	 * passed to sha1_object_info_extended. It will point to the data
@@ -186,4 +179,7 @@ void pretty_print_ref(const char *name, const unsigned char *sha1,
 /* Fill the values of request and prepare all data for final string creation */
 int populate_value(struct ref_array_item *ref);
 
+/* Search for atom in given format. */
+int is_atom_used(const struct ref_format *format, const char *atom);
+
 #endif /*  REF_FILTER_H  */

--
https://github.com/git/git/pull/452



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