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Introduce the ls-refs server command. In protocol v2, the ls-refs command is used to request the ref advertisement from the server. Since it is a command which can be requested (as opposed to mandatory in v1), a client can sent a number of parameters in its request to limit the ref advertisement based on provided ref-prefixes. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
97 lines
2.1 KiB
C
97 lines
2.1 KiB
C
#include "cache.h"
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#include "repository.h"
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#include "refs.h"
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#include "remote.h"
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#include "argv-array.h"
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#include "ls-refs.h"
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#include "pkt-line.h"
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/*
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* Check if one of the prefixes is a prefix of the ref.
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* If no prefixes were provided, all refs match.
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*/
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static int ref_match(const struct argv_array *prefixes, const char *refname)
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{
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int i;
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if (!prefixes->argc)
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return 1; /* no restriction */
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for (i = 0; i < prefixes->argc; i++) {
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const char *prefix = prefixes->argv[i];
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if (starts_with(refname, prefix))
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return 1;
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}
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return 0;
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}
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struct ls_refs_data {
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unsigned peel;
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unsigned symrefs;
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struct argv_array prefixes;
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};
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static int send_ref(const char *refname, const struct object_id *oid,
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int flag, void *cb_data)
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{
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struct ls_refs_data *data = cb_data;
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const char *refname_nons = strip_namespace(refname);
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struct strbuf refline = STRBUF_INIT;
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if (!ref_match(&data->prefixes, refname))
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return 0;
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strbuf_addf(&refline, "%s %s", oid_to_hex(oid), refname_nons);
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if (data->symrefs && flag & REF_ISSYMREF) {
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struct object_id unused;
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const char *symref_target = resolve_ref_unsafe(refname, 0,
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&unused,
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&flag);
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if (!symref_target)
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die("'%s' is a symref but it is not?", refname);
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strbuf_addf(&refline, " symref-target:%s", symref_target);
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}
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if (data->peel) {
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struct object_id peeled;
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if (!peel_ref(refname, &peeled))
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strbuf_addf(&refline, " peeled:%s", oid_to_hex(&peeled));
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}
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strbuf_addch(&refline, '\n');
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packet_write(1, refline.buf, refline.len);
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strbuf_release(&refline);
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return 0;
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}
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int ls_refs(struct repository *r, struct argv_array *keys,
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struct packet_reader *request)
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{
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struct ls_refs_data data;
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memset(&data, 0, sizeof(data));
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while (packet_reader_read(request) != PACKET_READ_FLUSH) {
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const char *arg = request->line;
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const char *out;
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if (!strcmp("peel", arg))
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data.peel = 1;
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else if (!strcmp("symrefs", arg))
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data.symrefs = 1;
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else if (skip_prefix(arg, "ref-prefix ", &out))
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argv_array_push(&data.prefixes, out);
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}
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head_ref_namespaced(send_ref, &data);
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for_each_namespaced_ref(send_ref, &data);
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packet_flush(1);
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argv_array_clear(&data.prefixes);
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return 0;
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}
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