d0da003d5b
Remotes are stored as an array, so looking one up or adding one without duplication is an O(n) operation. Reading an entire config file full of remotes is O(n^2) in the number of remotes. For a repository with tens of thousands of remotes, the running time can hit multiple minutes. Hash tables are way faster. So we add a hashmap from remote name to struct remote and use it for all lookups. The time to add a new remote to a repo that already has 50,000 remotes drops from ~2 minutes to < 1 second. We retain the old array of remotes so iterators proceed in config-file order. Signed-off-by: Patrick Reynolds <patrick.reynolds@github.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2264 lines
56 KiB
C
2264 lines
56 KiB
C
#include "cache.h"
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#include "remote.h"
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#include "refs.h"
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#include "commit.h"
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#include "diff.h"
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#include "revision.h"
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#include "dir.h"
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#include "tag.h"
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#include "string-list.h"
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#include "mergesort.h"
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enum map_direction { FROM_SRC, FROM_DST };
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static struct refspec s_tag_refspec = {
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0,
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1,
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0,
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0,
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"refs/tags/*",
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"refs/tags/*"
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};
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const struct refspec *tag_refspec = &s_tag_refspec;
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struct counted_string {
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size_t len;
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const char *s;
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};
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struct rewrite {
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const char *base;
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size_t baselen;
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struct counted_string *instead_of;
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int instead_of_nr;
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int instead_of_alloc;
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};
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struct rewrites {
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struct rewrite **rewrite;
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int rewrite_alloc;
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int rewrite_nr;
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};
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static struct remote **remotes;
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static int remotes_alloc;
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static int remotes_nr;
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static struct hashmap remotes_hash;
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static struct branch **branches;
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static int branches_alloc;
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static int branches_nr;
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static struct branch *current_branch;
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static const char *default_remote_name;
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static const char *branch_pushremote_name;
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static const char *pushremote_name;
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static int explicit_default_remote_name;
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static struct rewrites rewrites;
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static struct rewrites rewrites_push;
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#define BUF_SIZE (2048)
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static char buffer[BUF_SIZE];
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static int valid_remote(const struct remote *remote)
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{
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return (!!remote->url) || (!!remote->foreign_vcs);
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}
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static const char *alias_url(const char *url, struct rewrites *r)
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{
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int i, j;
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char *ret;
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struct counted_string *longest;
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int longest_i;
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longest = NULL;
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longest_i = -1;
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for (i = 0; i < r->rewrite_nr; i++) {
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if (!r->rewrite[i])
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continue;
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for (j = 0; j < r->rewrite[i]->instead_of_nr; j++) {
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if (starts_with(url, r->rewrite[i]->instead_of[j].s) &&
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(!longest ||
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longest->len < r->rewrite[i]->instead_of[j].len)) {
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longest = &(r->rewrite[i]->instead_of[j]);
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longest_i = i;
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}
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}
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}
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if (!longest)
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return url;
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ret = xmalloc(r->rewrite[longest_i]->baselen +
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(strlen(url) - longest->len) + 1);
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strcpy(ret, r->rewrite[longest_i]->base);
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strcpy(ret + r->rewrite[longest_i]->baselen, url + longest->len);
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return ret;
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}
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static void add_push_refspec(struct remote *remote, const char *ref)
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{
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ALLOC_GROW(remote->push_refspec,
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remote->push_refspec_nr + 1,
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remote->push_refspec_alloc);
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remote->push_refspec[remote->push_refspec_nr++] = ref;
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}
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static void add_fetch_refspec(struct remote *remote, const char *ref)
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{
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ALLOC_GROW(remote->fetch_refspec,
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remote->fetch_refspec_nr + 1,
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remote->fetch_refspec_alloc);
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remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
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}
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static void add_url(struct remote *remote, const char *url)
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{
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ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
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remote->url[remote->url_nr++] = url;
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}
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static void add_pushurl(struct remote *remote, const char *pushurl)
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{
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ALLOC_GROW(remote->pushurl, remote->pushurl_nr + 1, remote->pushurl_alloc);
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remote->pushurl[remote->pushurl_nr++] = pushurl;
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}
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static void add_pushurl_alias(struct remote *remote, const char *url)
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{
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const char *pushurl = alias_url(url, &rewrites_push);
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if (pushurl != url)
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add_pushurl(remote, pushurl);
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}
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static void add_url_alias(struct remote *remote, const char *url)
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{
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add_url(remote, alias_url(url, &rewrites));
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add_pushurl_alias(remote, url);
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}
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struct remotes_hash_key {
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const char *str;
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int len;
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};
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static int remotes_hash_cmp(const struct remote *a, const struct remote *b, const struct remotes_hash_key *key)
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{
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if (key)
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return strncmp(a->name, key->str, key->len) || a->name[key->len];
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else
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return strcmp(a->name, b->name);
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}
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static inline void init_remotes_hash(void)
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{
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if (!remotes_hash.cmpfn)
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hashmap_init(&remotes_hash, (hashmap_cmp_fn)remotes_hash_cmp, 0);
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}
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static struct remote *make_remote(const char *name, int len)
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{
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struct remote *ret, *replaced;
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struct remotes_hash_key lookup;
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struct hashmap_entry lookup_entry;
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if (!len)
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len = strlen(name);
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init_remotes_hash();
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lookup.str = name;
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lookup.len = len;
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hashmap_entry_init(&lookup_entry, memhash(name, len));
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if ((ret = hashmap_get(&remotes_hash, &lookup_entry, &lookup)) != NULL)
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return ret;
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ret = xcalloc(1, sizeof(struct remote));
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ret->prune = -1; /* unspecified */
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ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
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remotes[remotes_nr++] = ret;
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ret->name = xstrndup(name, len);
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hashmap_entry_init(ret, lookup_entry.hash);
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replaced = hashmap_put(&remotes_hash, ret);
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assert(replaced == NULL); /* no previous entry overwritten */
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return ret;
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}
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static void add_merge(struct branch *branch, const char *name)
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{
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ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
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branch->merge_alloc);
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branch->merge_name[branch->merge_nr++] = name;
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}
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static struct branch *make_branch(const char *name, int len)
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{
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struct branch *ret;
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int i;
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for (i = 0; i < branches_nr; i++) {
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if (len ? (!strncmp(name, branches[i]->name, len) &&
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!branches[i]->name[len]) :
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!strcmp(name, branches[i]->name))
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return branches[i];
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}
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ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
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ret = xcalloc(1, sizeof(struct branch));
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branches[branches_nr++] = ret;
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if (len)
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ret->name = xstrndup(name, len);
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else
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ret->name = xstrdup(name);
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ret->refname = xstrfmt("refs/heads/%s", ret->name);
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return ret;
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}
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static struct rewrite *make_rewrite(struct rewrites *r, const char *base, int len)
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{
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struct rewrite *ret;
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int i;
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for (i = 0; i < r->rewrite_nr; i++) {
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if (len
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? (len == r->rewrite[i]->baselen &&
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!strncmp(base, r->rewrite[i]->base, len))
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: !strcmp(base, r->rewrite[i]->base))
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return r->rewrite[i];
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}
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ALLOC_GROW(r->rewrite, r->rewrite_nr + 1, r->rewrite_alloc);
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ret = xcalloc(1, sizeof(struct rewrite));
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r->rewrite[r->rewrite_nr++] = ret;
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if (len) {
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ret->base = xstrndup(base, len);
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ret->baselen = len;
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}
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else {
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ret->base = xstrdup(base);
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ret->baselen = strlen(base);
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}
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return ret;
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}
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static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
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{
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ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
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rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
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rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
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rewrite->instead_of_nr++;
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}
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static void read_remotes_file(struct remote *remote)
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{
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FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
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if (!f)
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return;
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remote->origin = REMOTE_REMOTES;
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while (fgets(buffer, BUF_SIZE, f)) {
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int value_list;
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char *s, *p;
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if (starts_with(buffer, "URL:")) {
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value_list = 0;
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s = buffer + 4;
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} else if (starts_with(buffer, "Push:")) {
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value_list = 1;
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s = buffer + 5;
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} else if (starts_with(buffer, "Pull:")) {
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value_list = 2;
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s = buffer + 5;
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} else
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continue;
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while (isspace(*s))
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s++;
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if (!*s)
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continue;
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p = s + strlen(s);
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while (isspace(p[-1]))
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*--p = 0;
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switch (value_list) {
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case 0:
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add_url_alias(remote, xstrdup(s));
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break;
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case 1:
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add_push_refspec(remote, xstrdup(s));
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break;
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case 2:
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add_fetch_refspec(remote, xstrdup(s));
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break;
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}
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}
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fclose(f);
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}
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static void read_branches_file(struct remote *remote)
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{
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char *frag;
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struct strbuf branch = STRBUF_INIT;
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int n = 1000;
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FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
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char *s, *p;
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int len;
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if (!f)
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return;
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s = fgets(buffer, BUF_SIZE, f);
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fclose(f);
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if (!s)
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return;
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while (isspace(*s))
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s++;
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if (!*s)
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return;
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remote->origin = REMOTE_BRANCHES;
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p = s + strlen(s);
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while (isspace(p[-1]))
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*--p = 0;
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len = p - s;
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p = xmalloc(len + 1);
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strcpy(p, s);
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/*
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* The branches file would have URL and optionally
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* #branch specified. The "master" (or specified) branch is
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* fetched and stored in the local branch of the same name.
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*/
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frag = strchr(p, '#');
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if (frag) {
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*(frag++) = '\0';
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strbuf_addf(&branch, "refs/heads/%s", frag);
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} else
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strbuf_addstr(&branch, "refs/heads/master");
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strbuf_addf(&branch, ":refs/heads/%s", remote->name);
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add_url_alias(remote, p);
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add_fetch_refspec(remote, strbuf_detach(&branch, NULL));
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/*
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* Cogito compatible push: push current HEAD to remote #branch
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* (master if missing)
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*/
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strbuf_init(&branch, 0);
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strbuf_addstr(&branch, "HEAD");
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if (frag)
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strbuf_addf(&branch, ":refs/heads/%s", frag);
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else
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strbuf_addstr(&branch, ":refs/heads/master");
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add_push_refspec(remote, strbuf_detach(&branch, NULL));
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remote->fetch_tags = 1; /* always auto-follow */
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}
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static int handle_config(const char *key, const char *value, void *cb)
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{
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const char *name;
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const char *subkey;
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struct remote *remote;
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struct branch *branch;
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if (starts_with(key, "branch.")) {
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name = key + 7;
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subkey = strrchr(name, '.');
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if (!subkey)
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return 0;
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branch = make_branch(name, subkey - name);
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if (!strcmp(subkey, ".remote")) {
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if (git_config_string(&branch->remote_name, key, value))
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return -1;
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if (branch == current_branch) {
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default_remote_name = branch->remote_name;
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explicit_default_remote_name = 1;
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}
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} else if (!strcmp(subkey, ".pushremote")) {
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if (branch == current_branch)
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if (git_config_string(&branch_pushremote_name, key, value))
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return -1;
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} else if (!strcmp(subkey, ".merge")) {
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if (!value)
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return config_error_nonbool(key);
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add_merge(branch, xstrdup(value));
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}
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return 0;
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}
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if (starts_with(key, "url.")) {
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struct rewrite *rewrite;
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name = key + 4;
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subkey = strrchr(name, '.');
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if (!subkey)
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return 0;
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if (!strcmp(subkey, ".insteadof")) {
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rewrite = make_rewrite(&rewrites, name, subkey - name);
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if (!value)
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return config_error_nonbool(key);
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add_instead_of(rewrite, xstrdup(value));
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} else if (!strcmp(subkey, ".pushinsteadof")) {
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rewrite = make_rewrite(&rewrites_push, name, subkey - name);
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if (!value)
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return config_error_nonbool(key);
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add_instead_of(rewrite, xstrdup(value));
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}
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}
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if (!starts_with(key, "remote."))
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return 0;
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name = key + 7;
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/* Handle remote.* variables */
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if (!strcmp(name, "pushdefault"))
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return git_config_string(&pushremote_name, key, value);
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/* Handle remote.<name>.* variables */
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if (*name == '/') {
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warning("Config remote shorthand cannot begin with '/': %s",
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name);
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return 0;
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}
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subkey = strrchr(name, '.');
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if (!subkey)
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return 0;
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remote = make_remote(name, subkey - name);
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remote->origin = REMOTE_CONFIG;
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if (!strcmp(subkey, ".mirror"))
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remote->mirror = git_config_bool(key, value);
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else if (!strcmp(subkey, ".skipdefaultupdate"))
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remote->skip_default_update = git_config_bool(key, value);
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else if (!strcmp(subkey, ".skipfetchall"))
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remote->skip_default_update = git_config_bool(key, value);
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else if (!strcmp(subkey, ".prune"))
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remote->prune = git_config_bool(key, value);
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else if (!strcmp(subkey, ".url")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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add_url(remote, v);
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} else if (!strcmp(subkey, ".pushurl")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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add_pushurl(remote, v);
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} else if (!strcmp(subkey, ".push")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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add_push_refspec(remote, v);
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} else if (!strcmp(subkey, ".fetch")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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add_fetch_refspec(remote, v);
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} else if (!strcmp(subkey, ".receivepack")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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if (!remote->receivepack)
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remote->receivepack = v;
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else
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error("more than one receivepack given, using the first");
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} else if (!strcmp(subkey, ".uploadpack")) {
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const char *v;
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if (git_config_string(&v, key, value))
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return -1;
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if (!remote->uploadpack)
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remote->uploadpack = v;
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else
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error("more than one uploadpack given, using the first");
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} else if (!strcmp(subkey, ".tagopt")) {
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if (!strcmp(value, "--no-tags"))
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remote->fetch_tags = -1;
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else if (!strcmp(value, "--tags"))
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remote->fetch_tags = 2;
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} else if (!strcmp(subkey, ".proxy")) {
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return git_config_string((const char **)&remote->http_proxy,
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key, value);
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} else if (!strcmp(subkey, ".vcs")) {
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return git_config_string(&remote->foreign_vcs, key, value);
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}
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return 0;
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}
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|
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static void alias_all_urls(void)
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{
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int i, j;
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for (i = 0; i < remotes_nr; i++) {
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int add_pushurl_aliases;
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if (!remotes[i])
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continue;
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for (j = 0; j < remotes[i]->pushurl_nr; j++) {
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remotes[i]->pushurl[j] = alias_url(remotes[i]->pushurl[j], &rewrites);
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}
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add_pushurl_aliases = remotes[i]->pushurl_nr == 0;
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for (j = 0; j < remotes[i]->url_nr; j++) {
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if (add_pushurl_aliases)
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add_pushurl_alias(remotes[i], remotes[i]->url[j]);
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remotes[i]->url[j] = alias_url(remotes[i]->url[j], &rewrites);
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}
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}
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}
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static void read_config(void)
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{
|
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unsigned char sha1[20];
|
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const char *head_ref;
|
|
int flag;
|
|
if (default_remote_name) /* did this already */
|
|
return;
|
|
default_remote_name = "origin";
|
|
current_branch = NULL;
|
|
head_ref = resolve_ref_unsafe("HEAD", sha1, 0, &flag);
|
|
if (head_ref && (flag & REF_ISSYMREF) &&
|
|
skip_prefix(head_ref, "refs/heads/", &head_ref)) {
|
|
current_branch = make_branch(head_ref, 0);
|
|
}
|
|
git_config(handle_config, NULL);
|
|
if (branch_pushremote_name) {
|
|
free((char *)pushremote_name);
|
|
pushremote_name = branch_pushremote_name;
|
|
}
|
|
alias_all_urls();
|
|
}
|
|
|
|
/*
|
|
* This function frees a refspec array.
|
|
* Warning: code paths should be checked to ensure that the src
|
|
* and dst pointers are always freeable pointers as well
|
|
* as the refspec pointer itself.
|
|
*/
|
|
static void free_refspecs(struct refspec *refspec, int nr_refspec)
|
|
{
|
|
int i;
|
|
|
|
if (!refspec)
|
|
return;
|
|
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
free(refspec[i].src);
|
|
free(refspec[i].dst);
|
|
}
|
|
free(refspec);
|
|
}
|
|
|
|
static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
|
|
{
|
|
int i;
|
|
struct refspec *rs = xcalloc(nr_refspec, sizeof(*rs));
|
|
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
size_t llen;
|
|
int is_glob;
|
|
const char *lhs, *rhs;
|
|
int flags;
|
|
|
|
is_glob = 0;
|
|
|
|
lhs = refspec[i];
|
|
if (*lhs == '+') {
|
|
rs[i].force = 1;
|
|
lhs++;
|
|
}
|
|
|
|
rhs = strrchr(lhs, ':');
|
|
|
|
/*
|
|
* Before going on, special case ":" (or "+:") as a refspec
|
|
* for pushing matching refs.
|
|
*/
|
|
if (!fetch && rhs == lhs && rhs[1] == '\0') {
|
|
rs[i].matching = 1;
|
|
continue;
|
|
}
|
|
|
|
if (rhs) {
|
|
size_t rlen = strlen(++rhs);
|
|
is_glob = (1 <= rlen && strchr(rhs, '*'));
|
|
rs[i].dst = xstrndup(rhs, rlen);
|
|
}
|
|
|
|
llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
|
|
if (1 <= llen && memchr(lhs, '*', llen)) {
|
|
if ((rhs && !is_glob) || (!rhs && fetch))
|
|
goto invalid;
|
|
is_glob = 1;
|
|
} else if (rhs && is_glob) {
|
|
goto invalid;
|
|
}
|
|
|
|
rs[i].pattern = is_glob;
|
|
rs[i].src = xstrndup(lhs, llen);
|
|
flags = REFNAME_ALLOW_ONELEVEL | (is_glob ? REFNAME_REFSPEC_PATTERN : 0);
|
|
|
|
if (fetch) {
|
|
unsigned char unused[40];
|
|
|
|
/* LHS */
|
|
if (!*rs[i].src)
|
|
; /* empty is ok; it means "HEAD" */
|
|
else if (llen == 40 && !get_sha1_hex(rs[i].src, unused))
|
|
rs[i].exact_sha1 = 1; /* ok */
|
|
else if (!check_refname_format(rs[i].src, flags))
|
|
; /* valid looking ref is ok */
|
|
else
|
|
goto invalid;
|
|
/* RHS */
|
|
if (!rs[i].dst)
|
|
; /* missing is ok; it is the same as empty */
|
|
else if (!*rs[i].dst)
|
|
; /* empty is ok; it means "do not store" */
|
|
else if (!check_refname_format(rs[i].dst, flags))
|
|
; /* valid looking ref is ok */
|
|
else
|
|
goto invalid;
|
|
} else {
|
|
/*
|
|
* LHS
|
|
* - empty is allowed; it means delete.
|
|
* - when wildcarded, it must be a valid looking ref.
|
|
* - otherwise, it must be an extended SHA-1, but
|
|
* there is no existing way to validate this.
|
|
*/
|
|
if (!*rs[i].src)
|
|
; /* empty is ok */
|
|
else if (is_glob) {
|
|
if (check_refname_format(rs[i].src, flags))
|
|
goto invalid;
|
|
}
|
|
else
|
|
; /* anything goes, for now */
|
|
/*
|
|
* RHS
|
|
* - missing is allowed, but LHS then must be a
|
|
* valid looking ref.
|
|
* - empty is not allowed.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!rs[i].dst) {
|
|
if (check_refname_format(rs[i].src, flags))
|
|
goto invalid;
|
|
} else if (!*rs[i].dst) {
|
|
goto invalid;
|
|
} else {
|
|
if (check_refname_format(rs[i].dst, flags))
|
|
goto invalid;
|
|
}
|
|
}
|
|
}
|
|
return rs;
|
|
|
|
invalid:
|
|
if (verify) {
|
|
/*
|
|
* nr_refspec must be greater than zero and i must be valid
|
|
* since it is only possible to reach this point from within
|
|
* the for loop above.
|
|
*/
|
|
free_refspecs(rs, i+1);
|
|
return NULL;
|
|
}
|
|
die("Invalid refspec '%s'", refspec[i]);
|
|
}
|
|
|
|
int valid_fetch_refspec(const char *fetch_refspec_str)
|
|
{
|
|
struct refspec *refspec;
|
|
|
|
refspec = parse_refspec_internal(1, &fetch_refspec_str, 1, 1);
|
|
free_refspecs(refspec, 1);
|
|
return !!refspec;
|
|
}
|
|
|
|
struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 1, 0);
|
|
}
|
|
|
|
static struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 0, 0);
|
|
}
|
|
|
|
void free_refspec(int nr_refspec, struct refspec *refspec)
|
|
{
|
|
int i;
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
free(refspec[i].src);
|
|
free(refspec[i].dst);
|
|
}
|
|
free(refspec);
|
|
}
|
|
|
|
static int valid_remote_nick(const char *name)
|
|
{
|
|
if (!name[0] || is_dot_or_dotdot(name))
|
|
return 0;
|
|
return !strchr(name, '/'); /* no slash */
|
|
}
|
|
|
|
static struct remote *remote_get_1(const char *name, const char *pushremote_name)
|
|
{
|
|
struct remote *ret;
|
|
int name_given = 0;
|
|
|
|
if (name)
|
|
name_given = 1;
|
|
else {
|
|
if (pushremote_name) {
|
|
name = pushremote_name;
|
|
name_given = 1;
|
|
} else {
|
|
name = default_remote_name;
|
|
name_given = explicit_default_remote_name;
|
|
}
|
|
}
|
|
|
|
ret = make_remote(name, 0);
|
|
if (valid_remote_nick(name)) {
|
|
if (!valid_remote(ret))
|
|
read_remotes_file(ret);
|
|
if (!valid_remote(ret))
|
|
read_branches_file(ret);
|
|
}
|
|
if (name_given && !valid_remote(ret))
|
|
add_url_alias(ret, name);
|
|
if (!valid_remote(ret))
|
|
return NULL;
|
|
ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec);
|
|
ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec);
|
|
return ret;
|
|
}
|
|
|
|
struct remote *remote_get(const char *name)
|
|
{
|
|
read_config();
|
|
return remote_get_1(name, NULL);
|
|
}
|
|
|
|
struct remote *pushremote_get(const char *name)
|
|
{
|
|
read_config();
|
|
return remote_get_1(name, pushremote_name);
|
|
}
|
|
|
|
int remote_is_configured(const char *name)
|
|
{
|
|
struct remotes_hash_key lookup;
|
|
struct hashmap_entry lookup_entry;
|
|
read_config();
|
|
|
|
init_remotes_hash();
|
|
lookup.str = name;
|
|
lookup.len = strlen(name);
|
|
hashmap_entry_init(&lookup_entry, memhash(name, lookup.len));
|
|
|
|
return hashmap_get(&remotes_hash, &lookup_entry, &lookup) != NULL;
|
|
}
|
|
|
|
int for_each_remote(each_remote_fn fn, void *priv)
|
|
{
|
|
int i, result = 0;
|
|
read_config();
|
|
for (i = 0; i < remotes_nr && !result; i++) {
|
|
struct remote *r = remotes[i];
|
|
if (!r)
|
|
continue;
|
|
if (!r->fetch)
|
|
r->fetch = parse_fetch_refspec(r->fetch_refspec_nr,
|
|
r->fetch_refspec);
|
|
if (!r->push)
|
|
r->push = parse_push_refspec(r->push_refspec_nr,
|
|
r->push_refspec);
|
|
result = fn(r, priv);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void handle_duplicate(struct ref *ref1, struct ref *ref2)
|
|
{
|
|
if (strcmp(ref1->name, ref2->name)) {
|
|
if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status != FETCH_HEAD_IGNORE) {
|
|
die(_("Cannot fetch both %s and %s to %s"),
|
|
ref1->name, ref2->name, ref2->peer_ref->name);
|
|
} else if (ref1->fetch_head_status != FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
|
|
warning(_("%s usually tracks %s, not %s"),
|
|
ref2->peer_ref->name, ref2->name, ref1->name);
|
|
} else if (ref1->fetch_head_status == FETCH_HEAD_IGNORE &&
|
|
ref2->fetch_head_status == FETCH_HEAD_IGNORE) {
|
|
die(_("%s tracks both %s and %s"),
|
|
ref2->peer_ref->name, ref1->name, ref2->name);
|
|
} else {
|
|
/*
|
|
* This last possibility doesn't occur because
|
|
* FETCH_HEAD_IGNORE entries always appear at
|
|
* the end of the list.
|
|
*/
|
|
die(_("Internal error"));
|
|
}
|
|
}
|
|
free(ref2->peer_ref);
|
|
free(ref2);
|
|
}
|
|
|
|
struct ref *ref_remove_duplicates(struct ref *ref_map)
|
|
{
|
|
struct string_list refs = STRING_LIST_INIT_NODUP;
|
|
struct ref *retval = NULL;
|
|
struct ref **p = &retval;
|
|
|
|
while (ref_map) {
|
|
struct ref *ref = ref_map;
|
|
|
|
ref_map = ref_map->next;
|
|
ref->next = NULL;
|
|
|
|
if (!ref->peer_ref) {
|
|
*p = ref;
|
|
p = &ref->next;
|
|
} else {
|
|
struct string_list_item *item =
|
|
string_list_insert(&refs, ref->peer_ref->name);
|
|
|
|
if (item->util) {
|
|
/* Entry already existed */
|
|
handle_duplicate((struct ref *)item->util, ref);
|
|
} else {
|
|
*p = ref;
|
|
p = &ref->next;
|
|
item->util = ref;
|
|
}
|
|
}
|
|
}
|
|
|
|
string_list_clear(&refs, 0);
|
|
return retval;
|
|
}
|
|
|
|
int remote_has_url(struct remote *remote, const char *url)
|
|
{
|
|
int i;
|
|
for (i = 0; i < remote->url_nr; i++) {
|
|
if (!strcmp(remote->url[i], url))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_name_with_pattern(const char *key, const char *name,
|
|
const char *value, char **result)
|
|
{
|
|
const char *kstar = strchr(key, '*');
|
|
size_t klen;
|
|
size_t ksuffixlen;
|
|
size_t namelen;
|
|
int ret;
|
|
if (!kstar)
|
|
die("Key '%s' of pattern had no '*'", key);
|
|
klen = kstar - key;
|
|
ksuffixlen = strlen(kstar + 1);
|
|
namelen = strlen(name);
|
|
ret = !strncmp(name, key, klen) && namelen >= klen + ksuffixlen &&
|
|
!memcmp(name + namelen - ksuffixlen, kstar + 1, ksuffixlen);
|
|
if (ret && value) {
|
|
const char *vstar = strchr(value, '*');
|
|
size_t vlen;
|
|
size_t vsuffixlen;
|
|
if (!vstar)
|
|
die("Value '%s' of pattern has no '*'", value);
|
|
vlen = vstar - value;
|
|
vsuffixlen = strlen(vstar + 1);
|
|
*result = xmalloc(vlen + vsuffixlen +
|
|
strlen(name) -
|
|
klen - ksuffixlen + 1);
|
|
strncpy(*result, value, vlen);
|
|
strncpy(*result + vlen,
|
|
name + klen, namelen - klen - ksuffixlen);
|
|
strcpy(*result + vlen + namelen - klen - ksuffixlen,
|
|
vstar + 1);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void query_refspecs_multiple(struct refspec *refs, int ref_count, struct refspec *query, struct string_list *results)
|
|
{
|
|
int i;
|
|
int find_src = !query->src;
|
|
|
|
if (find_src && !query->dst)
|
|
error("query_refspecs_multiple: need either src or dst");
|
|
|
|
for (i = 0; i < ref_count; i++) {
|
|
struct refspec *refspec = &refs[i];
|
|
const char *key = find_src ? refspec->dst : refspec->src;
|
|
const char *value = find_src ? refspec->src : refspec->dst;
|
|
const char *needle = find_src ? query->dst : query->src;
|
|
char **result = find_src ? &query->src : &query->dst;
|
|
|
|
if (!refspec->dst)
|
|
continue;
|
|
if (refspec->pattern) {
|
|
if (match_name_with_pattern(key, needle, value, result))
|
|
string_list_append_nodup(results, *result);
|
|
} else if (!strcmp(needle, key)) {
|
|
string_list_append(results, value);
|
|
}
|
|
}
|
|
}
|
|
|
|
int query_refspecs(struct refspec *refs, int ref_count, struct refspec *query)
|
|
{
|
|
int i;
|
|
int find_src = !query->src;
|
|
const char *needle = find_src ? query->dst : query->src;
|
|
char **result = find_src ? &query->src : &query->dst;
|
|
|
|
if (find_src && !query->dst)
|
|
return error("query_refspecs: need either src or dst");
|
|
|
|
for (i = 0; i < ref_count; i++) {
|
|
struct refspec *refspec = &refs[i];
|
|
const char *key = find_src ? refspec->dst : refspec->src;
|
|
const char *value = find_src ? refspec->src : refspec->dst;
|
|
|
|
if (!refspec->dst)
|
|
continue;
|
|
if (refspec->pattern) {
|
|
if (match_name_with_pattern(key, needle, value, result)) {
|
|
query->force = refspec->force;
|
|
return 0;
|
|
}
|
|
} else if (!strcmp(needle, key)) {
|
|
*result = xstrdup(value);
|
|
query->force = refspec->force;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
|
|
const char *name)
|
|
{
|
|
struct refspec query;
|
|
|
|
memset(&query, 0, sizeof(struct refspec));
|
|
query.src = (char *)name;
|
|
|
|
if (query_refspecs(refspecs, nr_refspec, &query))
|
|
return NULL;
|
|
|
|
return query.dst;
|
|
}
|
|
|
|
int remote_find_tracking(struct remote *remote, struct refspec *refspec)
|
|
{
|
|
return query_refspecs(remote->fetch, remote->fetch_refspec_nr, refspec);
|
|
}
|
|
|
|
static struct ref *alloc_ref_with_prefix(const char *prefix, size_t prefixlen,
|
|
const char *name)
|
|
{
|
|
size_t len = strlen(name);
|
|
struct ref *ref = xcalloc(1, sizeof(struct ref) + prefixlen + len + 1);
|
|
memcpy(ref->name, prefix, prefixlen);
|
|
memcpy(ref->name + prefixlen, name, len);
|
|
return ref;
|
|
}
|
|
|
|
struct ref *alloc_ref(const char *name)
|
|
{
|
|
return alloc_ref_with_prefix("", 0, name);
|
|
}
|
|
|
|
struct ref *copy_ref(const struct ref *ref)
|
|
{
|
|
struct ref *cpy;
|
|
size_t len;
|
|
if (!ref)
|
|
return NULL;
|
|
len = strlen(ref->name);
|
|
cpy = xmalloc(sizeof(struct ref) + len + 1);
|
|
memcpy(cpy, ref, sizeof(struct ref) + len + 1);
|
|
cpy->next = NULL;
|
|
cpy->symref = ref->symref ? xstrdup(ref->symref) : NULL;
|
|
cpy->remote_status = ref->remote_status ? xstrdup(ref->remote_status) : NULL;
|
|
cpy->peer_ref = copy_ref(ref->peer_ref);
|
|
return cpy;
|
|
}
|
|
|
|
struct ref *copy_ref_list(const struct ref *ref)
|
|
{
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
while (ref) {
|
|
*tail = copy_ref(ref);
|
|
ref = ref->next;
|
|
tail = &((*tail)->next);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void free_ref(struct ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
free_ref(ref->peer_ref);
|
|
free(ref->remote_status);
|
|
free(ref->symref);
|
|
free(ref);
|
|
}
|
|
|
|
void free_refs(struct ref *ref)
|
|
{
|
|
struct ref *next;
|
|
while (ref) {
|
|
next = ref->next;
|
|
free_ref(ref);
|
|
ref = next;
|
|
}
|
|
}
|
|
|
|
int ref_compare_name(const void *va, const void *vb)
|
|
{
|
|
const struct ref *a = va, *b = vb;
|
|
return strcmp(a->name, b->name);
|
|
}
|
|
|
|
static void *ref_list_get_next(const void *a)
|
|
{
|
|
return ((const struct ref *)a)->next;
|
|
}
|
|
|
|
static void ref_list_set_next(void *a, void *next)
|
|
{
|
|
((struct ref *)a)->next = next;
|
|
}
|
|
|
|
void sort_ref_list(struct ref **l, int (*cmp)(const void *, const void *))
|
|
{
|
|
*l = llist_mergesort(*l, ref_list_get_next, ref_list_set_next, cmp);
|
|
}
|
|
|
|
int count_refspec_match(const char *pattern,
|
|
struct ref *refs,
|
|
struct ref **matched_ref)
|
|
{
|
|
int patlen = strlen(pattern);
|
|
struct ref *matched_weak = NULL;
|
|
struct ref *matched = NULL;
|
|
int weak_match = 0;
|
|
int match = 0;
|
|
|
|
for (weak_match = match = 0; refs; refs = refs->next) {
|
|
char *name = refs->name;
|
|
int namelen = strlen(name);
|
|
|
|
if (!refname_match(pattern, name))
|
|
continue;
|
|
|
|
/* A match is "weak" if it is with refs outside
|
|
* heads or tags, and did not specify the pattern
|
|
* in full (e.g. "refs/remotes/origin/master") or at
|
|
* least from the toplevel (e.g. "remotes/origin/master");
|
|
* otherwise "git push $URL master" would result in
|
|
* ambiguity between remotes/origin/master and heads/master
|
|
* at the remote site.
|
|
*/
|
|
if (namelen != patlen &&
|
|
patlen != namelen - 5 &&
|
|
!starts_with(name, "refs/heads/") &&
|
|
!starts_with(name, "refs/tags/")) {
|
|
/* We want to catch the case where only weak
|
|
* matches are found and there are multiple
|
|
* matches, and where more than one strong
|
|
* matches are found, as ambiguous. One
|
|
* strong match with zero or more weak matches
|
|
* are acceptable as a unique match.
|
|
*/
|
|
matched_weak = refs;
|
|
weak_match++;
|
|
}
|
|
else {
|
|
matched = refs;
|
|
match++;
|
|
}
|
|
}
|
|
if (!matched) {
|
|
if (matched_ref)
|
|
*matched_ref = matched_weak;
|
|
return weak_match;
|
|
}
|
|
else {
|
|
if (matched_ref)
|
|
*matched_ref = matched;
|
|
return match;
|
|
}
|
|
}
|
|
|
|
static void tail_link_ref(struct ref *ref, struct ref ***tail)
|
|
{
|
|
**tail = ref;
|
|
while (ref->next)
|
|
ref = ref->next;
|
|
*tail = &ref->next;
|
|
}
|
|
|
|
static struct ref *alloc_delete_ref(void)
|
|
{
|
|
struct ref *ref = alloc_ref("(delete)");
|
|
hashclr(ref->new_sha1);
|
|
return ref;
|
|
}
|
|
|
|
static int try_explicit_object_name(const char *name,
|
|
struct ref **match)
|
|
{
|
|
unsigned char sha1[20];
|
|
|
|
if (!*name) {
|
|
if (match)
|
|
*match = alloc_delete_ref();
|
|
return 0;
|
|
}
|
|
|
|
if (get_sha1(name, sha1))
|
|
return -1;
|
|
|
|
if (match) {
|
|
*match = alloc_ref(name);
|
|
hashcpy((*match)->new_sha1, sha1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct ref *make_linked_ref(const char *name, struct ref ***tail)
|
|
{
|
|
struct ref *ret = alloc_ref(name);
|
|
tail_link_ref(ret, tail);
|
|
return ret;
|
|
}
|
|
|
|
static char *guess_ref(const char *name, struct ref *peer)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
unsigned char sha1[20];
|
|
|
|
const char *r = resolve_ref_unsafe(peer->name, sha1, 1, NULL);
|
|
if (!r)
|
|
return NULL;
|
|
|
|
if (starts_with(r, "refs/heads/"))
|
|
strbuf_addstr(&buf, "refs/heads/");
|
|
else if (starts_with(r, "refs/tags/"))
|
|
strbuf_addstr(&buf, "refs/tags/");
|
|
else
|
|
return NULL;
|
|
|
|
strbuf_addstr(&buf, name);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static int match_explicit_lhs(struct ref *src,
|
|
struct refspec *rs,
|
|
struct ref **match,
|
|
int *allocated_match)
|
|
{
|
|
switch (count_refspec_match(rs->src, src, match)) {
|
|
case 1:
|
|
if (allocated_match)
|
|
*allocated_match = 0;
|
|
return 0;
|
|
case 0:
|
|
/* The source could be in the get_sha1() format
|
|
* not a reference name. :refs/other is a
|
|
* way to delete 'other' ref at the remote end.
|
|
*/
|
|
if (try_explicit_object_name(rs->src, match) < 0)
|
|
return error("src refspec %s does not match any.", rs->src);
|
|
if (allocated_match)
|
|
*allocated_match = 1;
|
|
return 0;
|
|
default:
|
|
return error("src refspec %s matches more than one.", rs->src);
|
|
}
|
|
}
|
|
|
|
static int match_explicit(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail,
|
|
struct refspec *rs)
|
|
{
|
|
struct ref *matched_src, *matched_dst;
|
|
int allocated_src;
|
|
|
|
const char *dst_value = rs->dst;
|
|
char *dst_guess;
|
|
|
|
if (rs->pattern || rs->matching)
|
|
return 0;
|
|
|
|
matched_src = matched_dst = NULL;
|
|
if (match_explicit_lhs(src, rs, &matched_src, &allocated_src) < 0)
|
|
return -1;
|
|
|
|
if (!dst_value) {
|
|
unsigned char sha1[20];
|
|
int flag;
|
|
|
|
dst_value = resolve_ref_unsafe(matched_src->name, sha1, 1, &flag);
|
|
if (!dst_value ||
|
|
((flag & REF_ISSYMREF) &&
|
|
!starts_with(dst_value, "refs/heads/")))
|
|
die("%s cannot be resolved to branch.",
|
|
matched_src->name);
|
|
}
|
|
|
|
switch (count_refspec_match(dst_value, dst, &matched_dst)) {
|
|
case 1:
|
|
break;
|
|
case 0:
|
|
if (starts_with(dst_value, "refs/"))
|
|
matched_dst = make_linked_ref(dst_value, dst_tail);
|
|
else if (is_null_sha1(matched_src->new_sha1))
|
|
error("unable to delete '%s': remote ref does not exist",
|
|
dst_value);
|
|
else if ((dst_guess = guess_ref(dst_value, matched_src)))
|
|
matched_dst = make_linked_ref(dst_guess, dst_tail);
|
|
else
|
|
error("unable to push to unqualified destination: %s\n"
|
|
"The destination refspec neither matches an "
|
|
"existing ref on the remote nor\n"
|
|
"begins with refs/, and we are unable to "
|
|
"guess a prefix based on the source ref.",
|
|
dst_value);
|
|
break;
|
|
default:
|
|
matched_dst = NULL;
|
|
error("dst refspec %s matches more than one.",
|
|
dst_value);
|
|
break;
|
|
}
|
|
if (!matched_dst)
|
|
return -1;
|
|
if (matched_dst->peer_ref)
|
|
return error("dst ref %s receives from more than one src.",
|
|
matched_dst->name);
|
|
else {
|
|
matched_dst->peer_ref = allocated_src ?
|
|
matched_src :
|
|
copy_ref(matched_src);
|
|
matched_dst->force = rs->force;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int match_explicit_refs(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail, struct refspec *rs,
|
|
int rs_nr)
|
|
{
|
|
int i, errs;
|
|
for (i = errs = 0; i < rs_nr; i++)
|
|
errs += match_explicit(src, dst, dst_tail, &rs[i]);
|
|
return errs;
|
|
}
|
|
|
|
static char *get_ref_match(const struct refspec *rs, int rs_nr, const struct ref *ref,
|
|
int send_mirror, int direction, const struct refspec **ret_pat)
|
|
{
|
|
const struct refspec *pat;
|
|
char *name;
|
|
int i;
|
|
int matching_refs = -1;
|
|
for (i = 0; i < rs_nr; i++) {
|
|
if (rs[i].matching &&
|
|
(matching_refs == -1 || rs[i].force)) {
|
|
matching_refs = i;
|
|
continue;
|
|
}
|
|
|
|
if (rs[i].pattern) {
|
|
const char *dst_side = rs[i].dst ? rs[i].dst : rs[i].src;
|
|
int match;
|
|
if (direction == FROM_SRC)
|
|
match = match_name_with_pattern(rs[i].src, ref->name, dst_side, &name);
|
|
else
|
|
match = match_name_with_pattern(dst_side, ref->name, rs[i].src, &name);
|
|
if (match) {
|
|
matching_refs = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (matching_refs == -1)
|
|
return NULL;
|
|
|
|
pat = rs + matching_refs;
|
|
if (pat->matching) {
|
|
/*
|
|
* "matching refs"; traditionally we pushed everything
|
|
* including refs outside refs/heads/ hierarchy, but
|
|
* that does not make much sense these days.
|
|
*/
|
|
if (!send_mirror && !starts_with(ref->name, "refs/heads/"))
|
|
return NULL;
|
|
name = xstrdup(ref->name);
|
|
}
|
|
if (ret_pat)
|
|
*ret_pat = pat;
|
|
return name;
|
|
}
|
|
|
|
static struct ref **tail_ref(struct ref **head)
|
|
{
|
|
struct ref **tail = head;
|
|
while (*tail)
|
|
tail = &((*tail)->next);
|
|
return tail;
|
|
}
|
|
|
|
struct tips {
|
|
struct commit **tip;
|
|
int nr, alloc;
|
|
};
|
|
|
|
static void add_to_tips(struct tips *tips, const unsigned char *sha1)
|
|
{
|
|
struct commit *commit;
|
|
|
|
if (is_null_sha1(sha1))
|
|
return;
|
|
commit = lookup_commit_reference_gently(sha1, 1);
|
|
if (!commit || (commit->object.flags & TMP_MARK))
|
|
return;
|
|
commit->object.flags |= TMP_MARK;
|
|
ALLOC_GROW(tips->tip, tips->nr + 1, tips->alloc);
|
|
tips->tip[tips->nr++] = commit;
|
|
}
|
|
|
|
static void add_missing_tags(struct ref *src, struct ref **dst, struct ref ***dst_tail)
|
|
{
|
|
struct string_list dst_tag = STRING_LIST_INIT_NODUP;
|
|
struct string_list src_tag = STRING_LIST_INIT_NODUP;
|
|
struct string_list_item *item;
|
|
struct ref *ref;
|
|
struct tips sent_tips;
|
|
|
|
/*
|
|
* Collect everything we know they would have at the end of
|
|
* this push, and collect all tags they have.
|
|
*/
|
|
memset(&sent_tips, 0, sizeof(sent_tips));
|
|
for (ref = *dst; ref; ref = ref->next) {
|
|
if (ref->peer_ref &&
|
|
!is_null_sha1(ref->peer_ref->new_sha1))
|
|
add_to_tips(&sent_tips, ref->peer_ref->new_sha1);
|
|
else
|
|
add_to_tips(&sent_tips, ref->old_sha1);
|
|
if (starts_with(ref->name, "refs/tags/"))
|
|
string_list_append(&dst_tag, ref->name);
|
|
}
|
|
clear_commit_marks_many(sent_tips.nr, sent_tips.tip, TMP_MARK);
|
|
|
|
sort_string_list(&dst_tag);
|
|
|
|
/* Collect tags they do not have. */
|
|
for (ref = src; ref; ref = ref->next) {
|
|
if (!starts_with(ref->name, "refs/tags/"))
|
|
continue; /* not a tag */
|
|
if (string_list_has_string(&dst_tag, ref->name))
|
|
continue; /* they already have it */
|
|
if (sha1_object_info(ref->new_sha1, NULL) != OBJ_TAG)
|
|
continue; /* be conservative */
|
|
item = string_list_append(&src_tag, ref->name);
|
|
item->util = ref;
|
|
}
|
|
string_list_clear(&dst_tag, 0);
|
|
|
|
/*
|
|
* At this point, src_tag lists tags that are missing from
|
|
* dst, and sent_tips lists the tips we are pushing or those
|
|
* that we know they already have. An element in the src_tag
|
|
* that is an ancestor of any of the sent_tips needs to be
|
|
* sent to the other side.
|
|
*/
|
|
if (sent_tips.nr) {
|
|
for_each_string_list_item(item, &src_tag) {
|
|
struct ref *ref = item->util;
|
|
struct ref *dst_ref;
|
|
struct commit *commit;
|
|
|
|
if (is_null_sha1(ref->new_sha1))
|
|
continue;
|
|
commit = lookup_commit_reference_gently(ref->new_sha1, 1);
|
|
if (!commit)
|
|
/* not pushing a commit, which is not an error */
|
|
continue;
|
|
|
|
/*
|
|
* Is this tag, which they do not have, reachable from
|
|
* any of the commits we are sending?
|
|
*/
|
|
if (!in_merge_bases_many(commit, sent_tips.nr, sent_tips.tip))
|
|
continue;
|
|
|
|
/* Add it in */
|
|
dst_ref = make_linked_ref(ref->name, dst_tail);
|
|
hashcpy(dst_ref->new_sha1, ref->new_sha1);
|
|
dst_ref->peer_ref = copy_ref(ref);
|
|
}
|
|
}
|
|
string_list_clear(&src_tag, 0);
|
|
free(sent_tips.tip);
|
|
}
|
|
|
|
struct ref *find_ref_by_name(const struct ref *list, const char *name)
|
|
{
|
|
for ( ; list; list = list->next)
|
|
if (!strcmp(list->name, name))
|
|
return (struct ref *)list;
|
|
return NULL;
|
|
}
|
|
|
|
static void prepare_ref_index(struct string_list *ref_index, struct ref *ref)
|
|
{
|
|
for ( ; ref; ref = ref->next)
|
|
string_list_append_nodup(ref_index, ref->name)->util = ref;
|
|
|
|
sort_string_list(ref_index);
|
|
}
|
|
|
|
/*
|
|
* Given only the set of local refs, sanity-check the set of push
|
|
* refspecs. We can't catch all errors that match_push_refs would,
|
|
* but we can catch some errors early before even talking to the
|
|
* remote side.
|
|
*/
|
|
int check_push_refs(struct ref *src, int nr_refspec, const char **refspec_names)
|
|
{
|
|
struct refspec *refspec = parse_push_refspec(nr_refspec, refspec_names);
|
|
int ret = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
struct refspec *rs = refspec + i;
|
|
|
|
if (rs->pattern || rs->matching)
|
|
continue;
|
|
|
|
ret |= match_explicit_lhs(src, rs, NULL, NULL);
|
|
}
|
|
|
|
free_refspec(nr_refspec, refspec);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Given the set of refs the local repository has, the set of refs the
|
|
* remote repository has, and the refspec used for push, determine
|
|
* what remote refs we will update and with what value by setting
|
|
* peer_ref (which object is being pushed) and force (if the push is
|
|
* forced) in elements of "dst". The function may add new elements to
|
|
* dst (e.g. pushing to a new branch, done in match_explicit_refs).
|
|
*/
|
|
int match_push_refs(struct ref *src, struct ref **dst,
|
|
int nr_refspec, const char **refspec, int flags)
|
|
{
|
|
struct refspec *rs;
|
|
int send_all = flags & MATCH_REFS_ALL;
|
|
int send_mirror = flags & MATCH_REFS_MIRROR;
|
|
int send_prune = flags & MATCH_REFS_PRUNE;
|
|
int errs;
|
|
static const char *default_refspec[] = { ":", NULL };
|
|
struct ref *ref, **dst_tail = tail_ref(dst);
|
|
struct string_list dst_ref_index = STRING_LIST_INIT_NODUP;
|
|
|
|
if (!nr_refspec) {
|
|
nr_refspec = 1;
|
|
refspec = default_refspec;
|
|
}
|
|
rs = parse_push_refspec(nr_refspec, (const char **) refspec);
|
|
errs = match_explicit_refs(src, *dst, &dst_tail, rs, nr_refspec);
|
|
|
|
/* pick the remainder */
|
|
for (ref = src; ref; ref = ref->next) {
|
|
struct string_list_item *dst_item;
|
|
struct ref *dst_peer;
|
|
const struct refspec *pat = NULL;
|
|
char *dst_name;
|
|
|
|
dst_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_SRC, &pat);
|
|
if (!dst_name)
|
|
continue;
|
|
|
|
if (!dst_ref_index.nr)
|
|
prepare_ref_index(&dst_ref_index, *dst);
|
|
|
|
dst_item = string_list_lookup(&dst_ref_index, dst_name);
|
|
dst_peer = dst_item ? dst_item->util : NULL;
|
|
if (dst_peer) {
|
|
if (dst_peer->peer_ref)
|
|
/* We're already sending something to this ref. */
|
|
goto free_name;
|
|
} else {
|
|
if (pat->matching && !(send_all || send_mirror))
|
|
/*
|
|
* Remote doesn't have it, and we have no
|
|
* explicit pattern, and we don't have
|
|
* --all or --mirror.
|
|
*/
|
|
goto free_name;
|
|
|
|
/* Create a new one and link it */
|
|
dst_peer = make_linked_ref(dst_name, &dst_tail);
|
|
hashcpy(dst_peer->new_sha1, ref->new_sha1);
|
|
string_list_insert(&dst_ref_index,
|
|
dst_peer->name)->util = dst_peer;
|
|
}
|
|
dst_peer->peer_ref = copy_ref(ref);
|
|
dst_peer->force = pat->force;
|
|
free_name:
|
|
free(dst_name);
|
|
}
|
|
|
|
string_list_clear(&dst_ref_index, 0);
|
|
|
|
if (flags & MATCH_REFS_FOLLOW_TAGS)
|
|
add_missing_tags(src, dst, &dst_tail);
|
|
|
|
if (send_prune) {
|
|
struct string_list src_ref_index = STRING_LIST_INIT_NODUP;
|
|
/* check for missing refs on the remote */
|
|
for (ref = *dst; ref; ref = ref->next) {
|
|
char *src_name;
|
|
|
|
if (ref->peer_ref)
|
|
/* We're already sending something to this ref. */
|
|
continue;
|
|
|
|
src_name = get_ref_match(rs, nr_refspec, ref, send_mirror, FROM_DST, NULL);
|
|
if (src_name) {
|
|
if (!src_ref_index.nr)
|
|
prepare_ref_index(&src_ref_index, src);
|
|
if (!string_list_has_string(&src_ref_index,
|
|
src_name))
|
|
ref->peer_ref = alloc_delete_ref();
|
|
free(src_name);
|
|
}
|
|
}
|
|
string_list_clear(&src_ref_index, 0);
|
|
}
|
|
if (errs)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
void set_ref_status_for_push(struct ref *remote_refs, int send_mirror,
|
|
int force_update)
|
|
{
|
|
struct ref *ref;
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
int force_ref_update = ref->force || force_update;
|
|
int reject_reason = 0;
|
|
|
|
if (ref->peer_ref)
|
|
hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
|
|
else if (!send_mirror)
|
|
continue;
|
|
|
|
ref->deletion = is_null_sha1(ref->new_sha1);
|
|
if (!ref->deletion &&
|
|
!hashcmp(ref->old_sha1, ref->new_sha1)) {
|
|
ref->status = REF_STATUS_UPTODATE;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Bypass the usual "must fast-forward" check but
|
|
* replace it with a weaker "the old value must be
|
|
* this value we observed". If the remote ref has
|
|
* moved and is now different from what we expect,
|
|
* reject any push.
|
|
*
|
|
* It also is an error if the user told us to check
|
|
* with the remote-tracking branch to find the value
|
|
* to expect, but we did not have such a tracking
|
|
* branch.
|
|
*/
|
|
if (ref->expect_old_sha1) {
|
|
if (ref->expect_old_no_trackback ||
|
|
hashcmp(ref->old_sha1, ref->old_sha1_expect))
|
|
reject_reason = REF_STATUS_REJECT_STALE;
|
|
}
|
|
|
|
/*
|
|
* The usual "must fast-forward" rules.
|
|
*
|
|
* Decide whether an individual refspec A:B can be
|
|
* pushed. The push will succeed if any of the
|
|
* following are true:
|
|
*
|
|
* (1) the remote reference B does not exist
|
|
*
|
|
* (2) the remote reference B is being removed (i.e.,
|
|
* pushing :B where no source is specified)
|
|
*
|
|
* (3) the destination is not under refs/tags/, and
|
|
* if the old and new value is a commit, the new
|
|
* is a descendant of the old.
|
|
*
|
|
* (4) it is forced using the +A:B notation, or by
|
|
* passing the --force argument
|
|
*/
|
|
|
|
else if (!ref->deletion && !is_null_sha1(ref->old_sha1)) {
|
|
if (starts_with(ref->name, "refs/tags/"))
|
|
reject_reason = REF_STATUS_REJECT_ALREADY_EXISTS;
|
|
else if (!has_sha1_file(ref->old_sha1))
|
|
reject_reason = REF_STATUS_REJECT_FETCH_FIRST;
|
|
else if (!lookup_commit_reference_gently(ref->old_sha1, 1) ||
|
|
!lookup_commit_reference_gently(ref->new_sha1, 1))
|
|
reject_reason = REF_STATUS_REJECT_NEEDS_FORCE;
|
|
else if (!ref_newer(ref->new_sha1, ref->old_sha1))
|
|
reject_reason = REF_STATUS_REJECT_NONFASTFORWARD;
|
|
}
|
|
|
|
/*
|
|
* "--force" will defeat any rejection implemented
|
|
* by the rules above.
|
|
*/
|
|
if (!force_ref_update)
|
|
ref->status = reject_reason;
|
|
else if (reject_reason)
|
|
ref->forced_update = 1;
|
|
}
|
|
}
|
|
|
|
struct branch *branch_get(const char *name)
|
|
{
|
|
struct branch *ret;
|
|
|
|
read_config();
|
|
if (!name || !*name || !strcmp(name, "HEAD"))
|
|
ret = current_branch;
|
|
else
|
|
ret = make_branch(name, 0);
|
|
if (ret && ret->remote_name) {
|
|
ret->remote = remote_get(ret->remote_name);
|
|
if (ret->merge_nr) {
|
|
int i;
|
|
ret->merge = xcalloc(ret->merge_nr, sizeof(*ret->merge));
|
|
for (i = 0; i < ret->merge_nr; i++) {
|
|
ret->merge[i] = xcalloc(1, sizeof(**ret->merge));
|
|
ret->merge[i]->src = xstrdup(ret->merge_name[i]);
|
|
if (remote_find_tracking(ret->remote, ret->merge[i])
|
|
&& !strcmp(ret->remote_name, "."))
|
|
ret->merge[i]->dst = xstrdup(ret->merge_name[i]);
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int branch_has_merge_config(struct branch *branch)
|
|
{
|
|
return branch && !!branch->merge;
|
|
}
|
|
|
|
int branch_merge_matches(struct branch *branch,
|
|
int i,
|
|
const char *refname)
|
|
{
|
|
if (!branch || i < 0 || i >= branch->merge_nr)
|
|
return 0;
|
|
return refname_match(branch->merge[i]->src, refname);
|
|
}
|
|
|
|
static int ignore_symref_update(const char *refname)
|
|
{
|
|
unsigned char sha1[20];
|
|
int flag;
|
|
|
|
if (!resolve_ref_unsafe(refname, sha1, 0, &flag))
|
|
return 0; /* non-existing refs are OK */
|
|
return (flag & REF_ISSYMREF);
|
|
}
|
|
|
|
/*
|
|
* Create and return a list of (struct ref) consisting of copies of
|
|
* each remote_ref that matches refspec. refspec must be a pattern.
|
|
* Fill in the copies' peer_ref to describe the local tracking refs to
|
|
* which they map. Omit any references that would map to an existing
|
|
* local symbolic ref.
|
|
*/
|
|
static struct ref *get_expanded_map(const struct ref *remote_refs,
|
|
const struct refspec *refspec)
|
|
{
|
|
const struct ref *ref;
|
|
struct ref *ret = NULL;
|
|
struct ref **tail = &ret;
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
char *expn_name = NULL;
|
|
|
|
if (strchr(ref->name, '^'))
|
|
continue; /* a dereference item */
|
|
if (match_name_with_pattern(refspec->src, ref->name,
|
|
refspec->dst, &expn_name) &&
|
|
!ignore_symref_update(expn_name)) {
|
|
struct ref *cpy = copy_ref(ref);
|
|
|
|
cpy->peer_ref = alloc_ref(expn_name);
|
|
if (refspec->force)
|
|
cpy->peer_ref->force = 1;
|
|
*tail = cpy;
|
|
tail = &cpy->next;
|
|
}
|
|
free(expn_name);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct ref *find_ref_by_name_abbrev(const struct ref *refs, const char *name)
|
|
{
|
|
const struct ref *ref;
|
|
for (ref = refs; ref; ref = ref->next) {
|
|
if (refname_match(name, ref->name))
|
|
return ref;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
struct ref *get_remote_ref(const struct ref *remote_refs, const char *name)
|
|
{
|
|
const struct ref *ref = find_ref_by_name_abbrev(remote_refs, name);
|
|
|
|
if (!ref)
|
|
return NULL;
|
|
|
|
return copy_ref(ref);
|
|
}
|
|
|
|
static struct ref *get_local_ref(const char *name)
|
|
{
|
|
if (!name || name[0] == '\0')
|
|
return NULL;
|
|
|
|
if (starts_with(name, "refs/"))
|
|
return alloc_ref(name);
|
|
|
|
if (starts_with(name, "heads/") ||
|
|
starts_with(name, "tags/") ||
|
|
starts_with(name, "remotes/"))
|
|
return alloc_ref_with_prefix("refs/", 5, name);
|
|
|
|
return alloc_ref_with_prefix("refs/heads/", 11, name);
|
|
}
|
|
|
|
int get_fetch_map(const struct ref *remote_refs,
|
|
const struct refspec *refspec,
|
|
struct ref ***tail,
|
|
int missing_ok)
|
|
{
|
|
struct ref *ref_map, **rmp;
|
|
|
|
if (refspec->pattern) {
|
|
ref_map = get_expanded_map(remote_refs, refspec);
|
|
} else {
|
|
const char *name = refspec->src[0] ? refspec->src : "HEAD";
|
|
|
|
if (refspec->exact_sha1) {
|
|
ref_map = alloc_ref(name);
|
|
get_sha1_hex(name, ref_map->old_sha1);
|
|
} else {
|
|
ref_map = get_remote_ref(remote_refs, name);
|
|
}
|
|
if (!missing_ok && !ref_map)
|
|
die("Couldn't find remote ref %s", name);
|
|
if (ref_map) {
|
|
ref_map->peer_ref = get_local_ref(refspec->dst);
|
|
if (ref_map->peer_ref && refspec->force)
|
|
ref_map->peer_ref->force = 1;
|
|
}
|
|
}
|
|
|
|
for (rmp = &ref_map; *rmp; ) {
|
|
if ((*rmp)->peer_ref) {
|
|
if (!starts_with((*rmp)->peer_ref->name, "refs/") ||
|
|
check_refname_format((*rmp)->peer_ref->name, 0)) {
|
|
struct ref *ignore = *rmp;
|
|
error("* Ignoring funny ref '%s' locally",
|
|
(*rmp)->peer_ref->name);
|
|
*rmp = (*rmp)->next;
|
|
free(ignore->peer_ref);
|
|
free(ignore);
|
|
continue;
|
|
}
|
|
}
|
|
rmp = &((*rmp)->next);
|
|
}
|
|
|
|
if (ref_map)
|
|
tail_link_ref(ref_map, tail);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int resolve_remote_symref(struct ref *ref, struct ref *list)
|
|
{
|
|
if (!ref->symref)
|
|
return 0;
|
|
for (; list; list = list->next)
|
|
if (!strcmp(ref->symref, list->name)) {
|
|
hashcpy(ref->old_sha1, list->old_sha1);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static void unmark_and_free(struct commit_list *list, unsigned int mark)
|
|
{
|
|
while (list) {
|
|
struct commit_list *temp = list;
|
|
temp->item->object.flags &= ~mark;
|
|
list = temp->next;
|
|
free(temp);
|
|
}
|
|
}
|
|
|
|
int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1)
|
|
{
|
|
struct object *o;
|
|
struct commit *old, *new;
|
|
struct commit_list *list, *used;
|
|
int found = 0;
|
|
|
|
/*
|
|
* Both new and old must be commit-ish and new is descendant of
|
|
* old. Otherwise we require --force.
|
|
*/
|
|
o = deref_tag(parse_object(old_sha1), NULL, 0);
|
|
if (!o || o->type != OBJ_COMMIT)
|
|
return 0;
|
|
old = (struct commit *) o;
|
|
|
|
o = deref_tag(parse_object(new_sha1), NULL, 0);
|
|
if (!o || o->type != OBJ_COMMIT)
|
|
return 0;
|
|
new = (struct commit *) o;
|
|
|
|
if (parse_commit(new) < 0)
|
|
return 0;
|
|
|
|
used = list = NULL;
|
|
commit_list_insert(new, &list);
|
|
while (list) {
|
|
new = pop_most_recent_commit(&list, TMP_MARK);
|
|
commit_list_insert(new, &used);
|
|
if (new == old) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
unmark_and_free(list, TMP_MARK);
|
|
unmark_and_free(used, TMP_MARK);
|
|
return found;
|
|
}
|
|
|
|
/*
|
|
* Compare a branch with its upstream, and save their differences (number
|
|
* of commits) in *num_ours and *num_theirs.
|
|
*
|
|
* Return 0 if branch has no upstream (no base), -1 if upstream is missing
|
|
* (with "gone" base), otherwise 1 (with base).
|
|
*/
|
|
int stat_tracking_info(struct branch *branch, int *num_ours, int *num_theirs)
|
|
{
|
|
unsigned char sha1[20];
|
|
struct commit *ours, *theirs;
|
|
char symmetric[84];
|
|
struct rev_info revs;
|
|
const char *rev_argv[10], *base;
|
|
int rev_argc;
|
|
|
|
/* Cannot stat unless we are marked to build on top of somebody else. */
|
|
if (!branch ||
|
|
!branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
|
|
return 0;
|
|
|
|
/* Cannot stat if what we used to build on no longer exists */
|
|
base = branch->merge[0]->dst;
|
|
if (read_ref(base, sha1))
|
|
return -1;
|
|
theirs = lookup_commit_reference(sha1);
|
|
if (!theirs)
|
|
return -1;
|
|
|
|
if (read_ref(branch->refname, sha1))
|
|
return -1;
|
|
ours = lookup_commit_reference(sha1);
|
|
if (!ours)
|
|
return -1;
|
|
|
|
/* are we the same? */
|
|
if (theirs == ours) {
|
|
*num_theirs = *num_ours = 0;
|
|
return 1;
|
|
}
|
|
|
|
/* Run "rev-list --left-right ours...theirs" internally... */
|
|
rev_argc = 0;
|
|
rev_argv[rev_argc++] = NULL;
|
|
rev_argv[rev_argc++] = "--left-right";
|
|
rev_argv[rev_argc++] = symmetric;
|
|
rev_argv[rev_argc++] = "--";
|
|
rev_argv[rev_argc] = NULL;
|
|
|
|
strcpy(symmetric, sha1_to_hex(ours->object.sha1));
|
|
strcpy(symmetric + 40, "...");
|
|
strcpy(symmetric + 43, sha1_to_hex(theirs->object.sha1));
|
|
|
|
init_revisions(&revs, NULL);
|
|
setup_revisions(rev_argc, rev_argv, &revs, NULL);
|
|
prepare_revision_walk(&revs);
|
|
|
|
/* ... and count the commits on each side. */
|
|
*num_ours = 0;
|
|
*num_theirs = 0;
|
|
while (1) {
|
|
struct commit *c = get_revision(&revs);
|
|
if (!c)
|
|
break;
|
|
if (c->object.flags & SYMMETRIC_LEFT)
|
|
(*num_ours)++;
|
|
else
|
|
(*num_theirs)++;
|
|
}
|
|
|
|
/* clear object flags smudged by the above traversal */
|
|
clear_commit_marks(ours, ALL_REV_FLAGS);
|
|
clear_commit_marks(theirs, ALL_REV_FLAGS);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Return true when there is anything to report, otherwise false.
|
|
*/
|
|
int format_tracking_info(struct branch *branch, struct strbuf *sb)
|
|
{
|
|
int ours, theirs;
|
|
const char *base;
|
|
int upstream_is_gone = 0;
|
|
|
|
switch (stat_tracking_info(branch, &ours, &theirs)) {
|
|
case 0:
|
|
/* no base */
|
|
return 0;
|
|
case -1:
|
|
/* with "gone" base */
|
|
upstream_is_gone = 1;
|
|
break;
|
|
default:
|
|
/* with base */
|
|
break;
|
|
}
|
|
|
|
base = branch->merge[0]->dst;
|
|
base = shorten_unambiguous_ref(base, 0);
|
|
if (upstream_is_gone) {
|
|
strbuf_addf(sb,
|
|
_("Your branch is based on '%s', but the upstream is gone.\n"),
|
|
base);
|
|
if (advice_status_hints)
|
|
strbuf_addf(sb,
|
|
_(" (use \"git branch --unset-upstream\" to fixup)\n"));
|
|
} else if (!ours && !theirs) {
|
|
strbuf_addf(sb,
|
|
_("Your branch is up-to-date with '%s'.\n"),
|
|
base);
|
|
} else if (!theirs) {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch is ahead of '%s' by %d commit.\n",
|
|
"Your branch is ahead of '%s' by %d commits.\n",
|
|
ours),
|
|
base, ours);
|
|
if (advice_status_hints)
|
|
strbuf_addf(sb,
|
|
_(" (use \"git push\" to publish your local commits)\n"));
|
|
} else if (!ours) {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch is behind '%s' by %d commit, "
|
|
"and can be fast-forwarded.\n",
|
|
"Your branch is behind '%s' by %d commits, "
|
|
"and can be fast-forwarded.\n",
|
|
theirs),
|
|
base, theirs);
|
|
if (advice_status_hints)
|
|
strbuf_addf(sb,
|
|
_(" (use \"git pull\" to update your local branch)\n"));
|
|
} else {
|
|
strbuf_addf(sb,
|
|
Q_("Your branch and '%s' have diverged,\n"
|
|
"and have %d and %d different commit each, "
|
|
"respectively.\n",
|
|
"Your branch and '%s' have diverged,\n"
|
|
"and have %d and %d different commits each, "
|
|
"respectively.\n",
|
|
theirs),
|
|
base, ours, theirs);
|
|
if (advice_status_hints)
|
|
strbuf_addf(sb,
|
|
_(" (use \"git pull\" to merge the remote branch into yours)\n"));
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int one_local_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
|
|
{
|
|
struct ref ***local_tail = cb_data;
|
|
struct ref *ref;
|
|
int len;
|
|
|
|
/* we already know it starts with refs/ to get here */
|
|
if (check_refname_format(refname + 5, 0))
|
|
return 0;
|
|
|
|
len = strlen(refname) + 1;
|
|
ref = xcalloc(1, sizeof(*ref) + len);
|
|
hashcpy(ref->new_sha1, sha1);
|
|
memcpy(ref->name, refname, len);
|
|
**local_tail = ref;
|
|
*local_tail = &ref->next;
|
|
return 0;
|
|
}
|
|
|
|
struct ref *get_local_heads(void)
|
|
{
|
|
struct ref *local_refs = NULL, **local_tail = &local_refs;
|
|
for_each_ref(one_local_ref, &local_tail);
|
|
return local_refs;
|
|
}
|
|
|
|
struct ref *guess_remote_head(const struct ref *head,
|
|
const struct ref *refs,
|
|
int all)
|
|
{
|
|
const struct ref *r;
|
|
struct ref *list = NULL;
|
|
struct ref **tail = &list;
|
|
|
|
if (!head)
|
|
return NULL;
|
|
|
|
/*
|
|
* Some transports support directly peeking at
|
|
* where HEAD points; if that is the case, then
|
|
* we don't have to guess.
|
|
*/
|
|
if (head->symref)
|
|
return copy_ref(find_ref_by_name(refs, head->symref));
|
|
|
|
/* If refs/heads/master could be right, it is. */
|
|
if (!all) {
|
|
r = find_ref_by_name(refs, "refs/heads/master");
|
|
if (r && !hashcmp(r->old_sha1, head->old_sha1))
|
|
return copy_ref(r);
|
|
}
|
|
|
|
/* Look for another ref that points there */
|
|
for (r = refs; r; r = r->next) {
|
|
if (r != head &&
|
|
starts_with(r->name, "refs/heads/") &&
|
|
!hashcmp(r->old_sha1, head->old_sha1)) {
|
|
*tail = copy_ref(r);
|
|
tail = &((*tail)->next);
|
|
if (!all)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
struct stale_heads_info {
|
|
struct string_list *ref_names;
|
|
struct ref **stale_refs_tail;
|
|
struct refspec *refs;
|
|
int ref_count;
|
|
};
|
|
|
|
static int get_stale_heads_cb(const char *refname,
|
|
const unsigned char *sha1, int flags, void *cb_data)
|
|
{
|
|
struct stale_heads_info *info = cb_data;
|
|
struct string_list matches = STRING_LIST_INIT_DUP;
|
|
struct refspec query;
|
|
int i, stale = 1;
|
|
memset(&query, 0, sizeof(struct refspec));
|
|
query.dst = (char *)refname;
|
|
|
|
query_refspecs_multiple(info->refs, info->ref_count, &query, &matches);
|
|
if (matches.nr == 0)
|
|
goto clean_exit; /* No matches */
|
|
|
|
/*
|
|
* If we did find a suitable refspec and it's not a symref and
|
|
* it's not in the list of refs that currently exist in that
|
|
* remote, we consider it to be stale. In order to deal with
|
|
* overlapping refspecs, we need to go over all of the
|
|
* matching refs.
|
|
*/
|
|
if (flags & REF_ISSYMREF)
|
|
goto clean_exit;
|
|
|
|
for (i = 0; stale && i < matches.nr; i++)
|
|
if (string_list_has_string(info->ref_names, matches.items[i].string))
|
|
stale = 0;
|
|
|
|
if (stale) {
|
|
struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
|
|
hashcpy(ref->new_sha1, sha1);
|
|
}
|
|
|
|
clean_exit:
|
|
string_list_clear(&matches, 0);
|
|
return 0;
|
|
}
|
|
|
|
struct ref *get_stale_heads(struct refspec *refs, int ref_count, struct ref *fetch_map)
|
|
{
|
|
struct ref *ref, *stale_refs = NULL;
|
|
struct string_list ref_names = STRING_LIST_INIT_NODUP;
|
|
struct stale_heads_info info;
|
|
info.ref_names = &ref_names;
|
|
info.stale_refs_tail = &stale_refs;
|
|
info.refs = refs;
|
|
info.ref_count = ref_count;
|
|
for (ref = fetch_map; ref; ref = ref->next)
|
|
string_list_append(&ref_names, ref->name);
|
|
sort_string_list(&ref_names);
|
|
for_each_ref(get_stale_heads_cb, &info);
|
|
string_list_clear(&ref_names, 0);
|
|
return stale_refs;
|
|
}
|
|
|
|
/*
|
|
* Compare-and-swap
|
|
*/
|
|
void clear_cas_option(struct push_cas_option *cas)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < cas->nr; i++)
|
|
free(cas->entry[i].refname);
|
|
free(cas->entry);
|
|
memset(cas, 0, sizeof(*cas));
|
|
}
|
|
|
|
static struct push_cas *add_cas_entry(struct push_cas_option *cas,
|
|
const char *refname,
|
|
size_t refnamelen)
|
|
{
|
|
struct push_cas *entry;
|
|
ALLOC_GROW(cas->entry, cas->nr + 1, cas->alloc);
|
|
entry = &cas->entry[cas->nr++];
|
|
memset(entry, 0, sizeof(*entry));
|
|
entry->refname = xmemdupz(refname, refnamelen);
|
|
return entry;
|
|
}
|
|
|
|
int parse_push_cas_option(struct push_cas_option *cas, const char *arg, int unset)
|
|
{
|
|
const char *colon;
|
|
struct push_cas *entry;
|
|
|
|
if (unset) {
|
|
/* "--no-<option>" */
|
|
clear_cas_option(cas);
|
|
return 0;
|
|
}
|
|
|
|
if (!arg) {
|
|
/* just "--<option>" */
|
|
cas->use_tracking_for_rest = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* "--<option>=refname" or "--<option>=refname:value" */
|
|
colon = strchrnul(arg, ':');
|
|
entry = add_cas_entry(cas, arg, colon - arg);
|
|
if (!*colon)
|
|
entry->use_tracking = 1;
|
|
else if (get_sha1(colon + 1, entry->expect))
|
|
return error("cannot parse expected object name '%s'", colon + 1);
|
|
return 0;
|
|
}
|
|
|
|
int parseopt_push_cas_option(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
return parse_push_cas_option(opt->value, arg, unset);
|
|
}
|
|
|
|
int is_empty_cas(const struct push_cas_option *cas)
|
|
{
|
|
return !cas->use_tracking_for_rest && !cas->nr;
|
|
}
|
|
|
|
/*
|
|
* Look at remote.fetch refspec and see if we have a remote
|
|
* tracking branch for the refname there. Fill its current
|
|
* value in sha1[].
|
|
* If we cannot do so, return negative to signal an error.
|
|
*/
|
|
static int remote_tracking(struct remote *remote, const char *refname,
|
|
unsigned char sha1[20])
|
|
{
|
|
char *dst;
|
|
|
|
dst = apply_refspecs(remote->fetch, remote->fetch_refspec_nr, refname);
|
|
if (!dst)
|
|
return -1; /* no tracking ref for refname at remote */
|
|
if (read_ref(dst, sha1))
|
|
return -1; /* we know what the tracking ref is but we cannot read it */
|
|
return 0;
|
|
}
|
|
|
|
static void apply_cas(struct push_cas_option *cas,
|
|
struct remote *remote,
|
|
struct ref *ref)
|
|
{
|
|
int i;
|
|
|
|
/* Find an explicit --<option>=<name>[:<value>] entry */
|
|
for (i = 0; i < cas->nr; i++) {
|
|
struct push_cas *entry = &cas->entry[i];
|
|
if (!refname_match(entry->refname, ref->name))
|
|
continue;
|
|
ref->expect_old_sha1 = 1;
|
|
if (!entry->use_tracking)
|
|
hashcpy(ref->old_sha1_expect, cas->entry[i].expect);
|
|
else if (remote_tracking(remote, ref->name, ref->old_sha1_expect))
|
|
ref->expect_old_no_trackback = 1;
|
|
return;
|
|
}
|
|
|
|
/* Are we using "--<option>" to cover all? */
|
|
if (!cas->use_tracking_for_rest)
|
|
return;
|
|
|
|
ref->expect_old_sha1 = 1;
|
|
if (remote_tracking(remote, ref->name, ref->old_sha1_expect))
|
|
ref->expect_old_no_trackback = 1;
|
|
}
|
|
|
|
void apply_push_cas(struct push_cas_option *cas,
|
|
struct remote *remote,
|
|
struct ref *remote_refs)
|
|
{
|
|
struct ref *ref;
|
|
for (ref = remote_refs; ref; ref = ref->next)
|
|
apply_cas(cas, remote, ref);
|
|
}
|