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-rw-r--r--ls-refs.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/ls-refs.c b/ls-refs.c
new file mode 100644
index 0000000000..a06f12eca8
--- /dev/null
+++ b/ls-refs.c
@@ -0,0 +1,96 @@
+#include "cache.h"
+#include "repository.h"
+#include "refs.h"
+#include "remote.h"
+#include "argv-array.h"
+#include "ls-refs.h"
+#include "pkt-line.h"
+
+/*
+ * Check if one of the prefixes is a prefix of the ref.
+ * If no prefixes were provided, all refs match.
+ */
+static int ref_match(const struct argv_array *prefixes, const char *refname)
+{
+ int i;
+
+ if (!prefixes->argc)
+ return 1; /* no restriction */
+
+ for (i = 0; i < prefixes->argc; i++) {
+ const char *prefix = prefixes->argv[i];
+
+ if (starts_with(refname, prefix))
+ return 1;
+ }
+
+ return 0;
+}
+
+struct ls_refs_data {
+ unsigned peel;
+ unsigned symrefs;
+ struct argv_array prefixes;
+};
+
+static int send_ref(const char *refname, const struct object_id *oid,
+ int flag, void *cb_data)
+{
+ struct ls_refs_data *data = cb_data;
+ const char *refname_nons = strip_namespace(refname);
+ struct strbuf refline = STRBUF_INIT;
+
+ if (!ref_match(&data->prefixes, refname))
+ return 0;
+
+ strbuf_addf(&refline, "%s %s", oid_to_hex(oid), refname_nons);
+ if (data->symrefs && flag & REF_ISSYMREF) {
+ struct object_id unused;
+ const char *symref_target = resolve_ref_unsafe(refname, 0,
+ &unused,
+ &flag);
+
+ if (!symref_target)
+ die("'%s' is a symref but it is not?", refname);
+
+ strbuf_addf(&refline, " symref-target:%s", symref_target);
+ }
+
+ if (data->peel) {
+ struct object_id peeled;
+ if (!peel_ref(refname, &peeled))
+ strbuf_addf(&refline, " peeled:%s", oid_to_hex(&peeled));
+ }
+
+ strbuf_addch(&refline, '\n');
+ packet_write(1, refline.buf, refline.len);
+
+ strbuf_release(&refline);
+ return 0;
+}
+
+int ls_refs(struct repository *r, struct argv_array *keys,
+ struct packet_reader *request)
+{
+ struct ls_refs_data data;
+
+ memset(&data, 0, sizeof(data));
+
+ while (packet_reader_read(request) != PACKET_READ_FLUSH) {
+ const char *arg = request->line;
+ const char *out;
+
+ if (!strcmp("peel", arg))
+ data.peel = 1;
+ else if (!strcmp("symrefs", arg))
+ data.symrefs = 1;
+ else if (skip_prefix(arg, "ref-prefix ", &out))
+ argv_array_push(&data.prefixes, out);
+ }
+
+ head_ref_namespaced(send_ref, &data);
+ for_each_namespaced_ref(send_ref, &data);
+ packet_flush(1);
+ argv_array_clear(&data.prefixes);
+ return 0;
+}