1 files changed, 126 insertions, 0 deletions
diff --git a/third_party/git/list-objects-filter-options.h b/third_party/git/list-objects-filter-options.h
new file mode 100644
index 000000000000..2ffb39222c49
--- /dev/null
+++ b/third_party/git/list-objects-filter-options.h
@@ -0,0 +1,126 @@
+#ifndef LIST_OBJECTS_FILTER_OPTIONS_H
+#define LIST_OBJECTS_FILTER_OPTIONS_H
+
+#include "parse-options.h"
+#include "string-list.h"
+
+/*
+ * The list of defined filters for list-objects.
+ */
+enum list_objects_filter_choice {
+	LOFC_DISABLED = 0,
+	LOFC_BLOB_NONE,
+	LOFC_BLOB_LIMIT,
+	LOFC_TREE_DEPTH,
+	LOFC_SPARSE_OID,
+	LOFC_COMBINE,
+	LOFC__COUNT /* must be last */
+};
+
+struct list_objects_filter_options {
+	/*
+	 * 'filter_spec' is the raw argument value given on the command line
+	 * or protocol request.  (The part after the "--keyword=".)  For
+	 * commands that launch filtering sub-processes, or for communication
+	 * over the network, don't use this value; use the result of
+	 * expand_list_objects_filter_spec() instead.
+	 * To get the raw filter spec given by the user, use the result of
+	 * list_objects_filter_spec().
+	 */
+	struct string_list filter_spec;
+
+	/*
+	 * 'choice' is determined by parsing the filter-spec.  This indicates
+	 * the filtering algorithm to use.
+	 */
+	enum list_objects_filter_choice choice;
+
+	/*
+	 * Choice is LOFC_DISABLED because "--no-filter" was requested.
+	 */
+	unsigned int no_filter : 1;
+
+	/*
+	 * BEGIN choice-specific parsed values from within the filter-spec. Only
+	 * some values will be defined for any given choice.
+	 */
+
+	char *sparse_oid_name;
+	unsigned long blob_limit_value;
+	unsigned long tree_exclude_depth;
+
+	/* LOFC_COMBINE values */
+
+	/* This array contains all the subfilters which this filter combines. */
+	size_t sub_nr, sub_alloc;
+	struct list_objects_filter_options *sub;
+
+	/*
+	 * END choice-specific parsed values.
+	 */
+};
+
+/* Normalized command line arguments */
+#define CL_ARG__FILTER "filter"
+
+void list_objects_filter_die_if_populated(
+	struct list_objects_filter_options *filter_options);
+
+/*
+ * Parses the filter spec string given by arg and either (1) simply places the
+ * result in filter_options if it is not yet populated or (2) combines it with
+ * the filter already in filter_options if it is already populated. In the case
+ * of (2), the filter specs are combined as if specified with 'combine:'.
+ *
+ * Dies and prints a user-facing message if an error occurs.
+ */
+void parse_list_objects_filter(
+	struct list_objects_filter_options *filter_options,
+	const char *arg);
+
+int opt_parse_list_objects_filter(const struct option *opt,
+				  const char *arg, int unset);
+
+#define OPT_PARSE_LIST_OBJECTS_FILTER(fo) \
+	{ OPTION_CALLBACK, 0, CL_ARG__FILTER, fo, N_("args"), \
+	  N_("object filtering"), 0, \
+	  opt_parse_list_objects_filter }
+
+/*
+ * Translates abbreviated numbers in the filter's filter_spec into their
+ * fully-expanded forms (e.g., "limit:blob=1k" becomes "limit:blob=1024").
+ * Returns a string owned by the list_objects_filter_options object.
+ *
+ * This form should be used instead of the raw list_objects_filter_spec()
+ * value when communicating with a remote process or subprocess.
+ */
+const char *expand_list_objects_filter_spec(
+	struct list_objects_filter_options *filter);
+
+/*
+ * Returns the filter spec string more or less in the form as the user
+ * entered it. This form of the filter_spec can be used in user-facing
+ * messages.  Returns a string owned by the list_objects_filter_options
+ * object.
+ */
+const char *list_objects_filter_spec(
+	struct list_objects_filter_options *filter);
+
+void list_objects_filter_release(
+	struct list_objects_filter_options *filter_options);
+
+static inline void list_objects_filter_set_no_filter(
+	struct list_objects_filter_options *filter_options)
+{
+	list_objects_filter_release(filter_options);
+	filter_options->no_filter = 1;
+}
+
+void partial_clone_register(
+	const char *remote,
+	struct list_objects_filter_options *filter_options);
+void partial_clone_get_default_filter_spec(
+	struct list_objects_filter_options *filter_options,
+	const char *remote);
+
+#endif /* LIST_OBJECTS_FILTER_OPTIONS_H */