mirror of
https://github.com/git/git.git
synced 2024-12-18 06:14:59 +08:00
20e8b465a5
Move the logic that detects up-to-date and non-fast-forward refs to a new function in remote.[ch], set_ref_status_for_push(). Make transport_push() invoke set_ref_status_for_push() before invoking the push_refs() implementation. (As a side-effect, the push_refs() implementation in transport-helper.c now knows of non-fast-forward pushes.) Removed logic for detecting up-to-date refs from the push_refs() implementation in transport-helper.c, as transport_push() has already done so for it. Make cmd_send_pack() invoke set_ref_status_for_push() before invoking send_pack(), as transport_push() can't do it for send_pack() here. Mark the test on the return status of non-fast-forward push to fail. Git now exits with success, as transport.c::transport_push() does not check for refs with status REF_STATUS_REJECT_NONFASTFORWARD nor does it indicate rejected pushes with its return value. Mark the test for ref status to succeed. As mentioned earlier, refs might be marked as non-fast-forwards, triggering the push status printing mechanism in transport.c. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1718 lines
41 KiB
C
1718 lines
41 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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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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"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 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 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 (!prefixcmp(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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static struct remote *make_remote(const char *name, int len)
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{
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struct remote *ret;
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int i;
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for (i = 0; i < remotes_nr; i++) {
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if (len ? (!strncmp(name, remotes[i]->name, len) &&
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!remotes[i]->name[len]) :
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!strcmp(name, remotes[i]->name))
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return remotes[i];
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}
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ret = xcalloc(1, sizeof(struct remote));
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ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
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remotes[remotes_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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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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char *refname;
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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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refname = xmalloc(strlen(name) + strlen("refs/heads/") + 1);
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strcpy(refname, "refs/heads/");
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strcpy(refname + strlen("refs/heads/"), ret->name);
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ret->refname = refname;
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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 (!prefixcmp(buffer, "URL:")) {
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value_list = 0;
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s = buffer + 4;
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} else if (!prefixcmp(buffer, "Push:")) {
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value_list = 1;
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s = buffer + 5;
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} else if (!prefixcmp(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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const char *slash = strchr(remote->name, '/');
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char *frag;
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struct strbuf branch = STRBUF_INIT;
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int n = slash ? slash - remote->name : 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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if (slash)
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len += strlen(slash);
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p = xmalloc(len + 1);
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strcpy(p, s);
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if (slash)
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strcat(p, slash);
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/*
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* With "slash", e.g. "git fetch jgarzik/netdev-2.6" when
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* reading from $GIT_DIR/branches/jgarzik fetches "HEAD" from
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* the partial URL obtained from the branches file plus
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* "/netdev-2.6" and does not store it in any tracking ref.
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* #branch specifier in the file is ignored.
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*
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* Otherwise, 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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if (!slash) {
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strbuf_addf(&branch, ":refs/heads/%s", remote->name);
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} else {
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strbuf_reset(&branch);
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strbuf_addstr(&branch, "HEAD:");
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}
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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 (!prefixcmp(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 (!value)
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return config_error_nonbool(key);
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branch->remote_name = xstrdup(value);
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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, ".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 (!prefixcmp(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 (prefixcmp(key, "remote."))
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return 0;
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name = key + 7;
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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, ".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(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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|
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static void read_config(void)
|
|
{
|
|
unsigned char sha1[20];
|
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const char *head_ref;
|
|
int flag;
|
|
if (default_remote_name) // did this already
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return;
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default_remote_name = xstrdup("origin");
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current_branch = NULL;
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head_ref = resolve_ref("HEAD", sha1, 0, &flag);
|
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if (head_ref && (flag & REF_ISSYMREF) &&
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!prefixcmp(head_ref, "refs/heads/")) {
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current_branch =
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make_branch(head_ref + strlen("refs/heads/"), 0);
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}
|
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git_config(handle_config, NULL);
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alias_all_urls();
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}
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|
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/*
|
|
* We need to make sure the tracking branches are well formed, but a
|
|
* wildcard refspec in "struct refspec" must have a trailing slash. We
|
|
* temporarily drop the trailing '/' while calling check_ref_format(),
|
|
* and put it back. The caller knows that a CHECK_REF_FORMAT_ONELEVEL
|
|
* error return is Ok for a wildcard refspec.
|
|
*/
|
|
static int verify_refname(char *name, int is_glob)
|
|
{
|
|
int result;
|
|
|
|
result = check_ref_format(name);
|
|
if (is_glob && result == CHECK_REF_FORMAT_WILDCARD)
|
|
result = CHECK_REF_FORMAT_OK;
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
int st;
|
|
struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
|
|
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
size_t llen;
|
|
int is_glob;
|
|
const char *lhs, *rhs;
|
|
|
|
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 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);
|
|
|
|
if (fetch) {
|
|
/*
|
|
* LHS
|
|
* - empty is allowed; it means HEAD.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!*rs[i].src)
|
|
; /* empty is ok */
|
|
else {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
/*
|
|
* RHS
|
|
* - missing is ok, and is same as empty.
|
|
* - empty is ok; it means not to store.
|
|
* - otherwise it must be a valid looking ref.
|
|
*/
|
|
if (!rs[i].dst) {
|
|
; /* ok */
|
|
} else if (!*rs[i].dst) {
|
|
; /* ok */
|
|
} else {
|
|
st = verify_refname(rs[i].dst, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
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) {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
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) {
|
|
st = verify_refname(rs[i].src, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
} else if (!*rs[i].dst) {
|
|
goto invalid;
|
|
} else {
|
|
st = verify_refname(rs[i].dst, is_glob);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
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)
|
|
{
|
|
const char *fetch_refspec[] = { fetch_refspec_str };
|
|
struct refspec *refspec;
|
|
|
|
refspec = parse_refspec_internal(1, fetch_refspec, 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 */
|
|
}
|
|
|
|
struct remote *remote_get(const char *name)
|
|
{
|
|
struct remote *ret;
|
|
int name_given = 0;
|
|
|
|
read_config();
|
|
if (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;
|
|
}
|
|
|
|
int remote_is_configured(const char *name)
|
|
{
|
|
int i;
|
|
read_config();
|
|
|
|
for (i = 0; i < remotes_nr; i++)
|
|
if (!strcmp(name, remotes[i]->name))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void ref_remove_duplicates(struct ref *ref_map)
|
|
{
|
|
struct string_list refs = { NULL, 0, 0, 0 };
|
|
struct string_list_item *item = NULL;
|
|
struct ref *prev = NULL, *next = NULL;
|
|
for (; ref_map; prev = ref_map, ref_map = next) {
|
|
next = ref_map->next;
|
|
if (!ref_map->peer_ref)
|
|
continue;
|
|
|
|
item = string_list_lookup(ref_map->peer_ref->name, &refs);
|
|
if (item) {
|
|
if (strcmp(((struct ref *)item->util)->name,
|
|
ref_map->name))
|
|
die("%s tracks both %s and %s",
|
|
ref_map->peer_ref->name,
|
|
((struct ref *)item->util)->name,
|
|
ref_map->name);
|
|
prev->next = ref_map->next;
|
|
free(ref_map->peer_ref);
|
|
free(ref_map);
|
|
ref_map = prev; /* skip this; we freed it */
|
|
continue;
|
|
}
|
|
|
|
item = string_list_insert(ref_map->peer_ref->name, &refs);
|
|
item->util = ref_map;
|
|
}
|
|
string_list_clear(&refs, 0);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
char *apply_refspecs(struct refspec *refspecs, int nr_refspec,
|
|
const char *name)
|
|
{
|
|
int i;
|
|
char *ret = NULL;
|
|
for (i = 0; i < nr_refspec; i++) {
|
|
struct refspec *refspec = refspecs + i;
|
|
if (refspec->pattern) {
|
|
if (match_name_with_pattern(refspec->src, name,
|
|
refspec->dst, &ret))
|
|
return ret;
|
|
} else if (!strcmp(refspec->src, name))
|
|
return strdup(refspec->dst);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
int remote_find_tracking(struct remote *remote, struct refspec *refspec)
|
|
{
|
|
int find_src = refspec->src == NULL;
|
|
char *needle, **result;
|
|
int i;
|
|
|
|
if (find_src) {
|
|
if (!refspec->dst)
|
|
return error("find_tracking: need either src or dst");
|
|
needle = refspec->dst;
|
|
result = &refspec->src;
|
|
} else {
|
|
needle = refspec->src;
|
|
result = &refspec->dst;
|
|
}
|
|
|
|
for (i = 0; i < remote->fetch_refspec_nr; i++) {
|
|
struct refspec *fetch = &remote->fetch[i];
|
|
const char *key = find_src ? fetch->dst : fetch->src;
|
|
const char *value = find_src ? fetch->src : fetch->dst;
|
|
if (!fetch->dst)
|
|
continue;
|
|
if (fetch->pattern) {
|
|
if (match_name_with_pattern(key, needle, value, result)) {
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
} else if (!strcmp(needle, key)) {
|
|
*result = xstrdup(value);
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static 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;
|
|
}
|
|
}
|
|
|
|
static 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, ref_rev_parse_rules))
|
|
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 &&
|
|
prefixcmp(name, "refs/heads/") &&
|
|
prefixcmp(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) {
|
|
*matched_ref = matched_weak;
|
|
return weak_match;
|
|
}
|
|
else {
|
|
*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 *try_explicit_object_name(const char *name)
|
|
{
|
|
unsigned char sha1[20];
|
|
struct ref *ref;
|
|
|
|
if (!*name) {
|
|
ref = alloc_ref("(delete)");
|
|
hashclr(ref->new_sha1);
|
|
return ref;
|
|
}
|
|
if (get_sha1(name, sha1))
|
|
return NULL;
|
|
ref = alloc_ref(name);
|
|
hashcpy(ref->new_sha1, sha1);
|
|
return ref;
|
|
}
|
|
|
|
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(peer->name, sha1, 1, NULL);
|
|
if (!r)
|
|
return NULL;
|
|
|
|
if (!prefixcmp(r, "refs/heads/"))
|
|
strbuf_addstr(&buf, "refs/heads/");
|
|
else if (!prefixcmp(r, "refs/tags/"))
|
|
strbuf_addstr(&buf, "refs/tags/");
|
|
else
|
|
return NULL;
|
|
|
|
strbuf_addstr(&buf, name);
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static int match_explicit(struct ref *src, struct ref *dst,
|
|
struct ref ***dst_tail,
|
|
struct refspec *rs)
|
|
{
|
|
struct ref *matched_src, *matched_dst;
|
|
int copy_src;
|
|
|
|
const char *dst_value = rs->dst;
|
|
char *dst_guess;
|
|
|
|
if (rs->pattern || rs->matching)
|
|
return 0;
|
|
|
|
matched_src = matched_dst = NULL;
|
|
switch (count_refspec_match(rs->src, src, &matched_src)) {
|
|
case 1:
|
|
copy_src = 1;
|
|
break;
|
|
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.
|
|
*/
|
|
matched_src = try_explicit_object_name(rs->src);
|
|
if (!matched_src)
|
|
return error("src refspec %s does not match any.", rs->src);
|
|
copy_src = 0;
|
|
break;
|
|
default:
|
|
return error("src refspec %s matches more than one.", rs->src);
|
|
}
|
|
|
|
if (!dst_value) {
|
|
unsigned char sha1[20];
|
|
int flag;
|
|
|
|
dst_value = resolve_ref(matched_src->name, sha1, 1, &flag);
|
|
if (!dst_value ||
|
|
((flag & REF_ISSYMREF) &&
|
|
prefixcmp(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 (!memcmp(dst_value, "refs/", 5))
|
|
matched_dst = make_linked_ref(dst_value, dst_tail);
|
|
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 = copy_src ? copy_ref(matched_src) : 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 const struct refspec *check_pattern_match(const struct refspec *rs,
|
|
int rs_nr,
|
|
const struct ref *src)
|
|
{
|
|
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 && match_name_with_pattern(rs[i].src, src->name,
|
|
NULL, NULL))
|
|
return rs + i;
|
|
}
|
|
if (matching_refs != -1)
|
|
return rs + matching_refs;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
static struct ref **tail_ref(struct ref **head)
|
|
{
|
|
struct ref **tail = head;
|
|
while (*tail)
|
|
tail = &((*tail)->next);
|
|
return tail;
|
|
}
|
|
|
|
/*
|
|
* Note. This is used only by "push"; refspec matching rules for
|
|
* push and fetch are subtly different, so do not try to reuse it
|
|
* without thinking.
|
|
*/
|
|
int match_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 errs;
|
|
static const char *default_refspec[] = { ":", NULL };
|
|
struct ref **dst_tail = tail_ref(dst);
|
|
|
|
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 ( ; src; src = src->next) {
|
|
struct ref *dst_peer;
|
|
const struct refspec *pat = NULL;
|
|
char *dst_name;
|
|
if (src->peer_ref)
|
|
continue;
|
|
|
|
pat = check_pattern_match(rs, nr_refspec, src);
|
|
if (!pat)
|
|
continue;
|
|
|
|
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 && prefixcmp(src->name, "refs/heads/"))
|
|
continue;
|
|
dst_name = xstrdup(src->name);
|
|
|
|
} else {
|
|
const char *dst_side = pat->dst ? pat->dst : pat->src;
|
|
if (!match_name_with_pattern(pat->src, src->name,
|
|
dst_side, &dst_name))
|
|
die("Didn't think it matches any more");
|
|
}
|
|
dst_peer = find_ref_by_name(*dst, dst_name);
|
|
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 nor --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, src->new_sha1);
|
|
}
|
|
dst_peer->peer_ref = copy_ref(src);
|
|
dst_peer->force = pat->force;
|
|
free_name:
|
|
free(dst_name);
|
|
}
|
|
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) {
|
|
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;
|
|
}
|
|
|
|
/* This part determines what can overwrite what.
|
|
* The rules are:
|
|
*
|
|
* (0) you can always use --force or +A:B notation to
|
|
* selectively force individual ref pairs.
|
|
*
|
|
* (1) if the old thing does not exist, it is OK.
|
|
*
|
|
* (2) if you do not have the old thing, you are not allowed
|
|
* to overwrite it; you would not know what you are losing
|
|
* otherwise.
|
|
*
|
|
* (3) if both new and old are commit-ish, and new is a
|
|
* descendant of old, it is OK.
|
|
*
|
|
* (4) regardless of all of the above, removing :B is
|
|
* always allowed.
|
|
*/
|
|
|
|
ref->nonfastforward =
|
|
!ref->deletion &&
|
|
!is_null_sha1(ref->old_sha1) &&
|
|
(!has_sha1_file(ref->old_sha1)
|
|
|| !ref_newer(ref->new_sha1, ref->old_sha1));
|
|
|
|
if (ref->nonfastforward && !ref->force && !force_update) {
|
|
ref->status = REF_STATUS_REJECT_NONFASTFORWARD;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
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(sizeof(*ret->merge),
|
|
ret->merge_nr);
|
|
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, ref_fetch_rules);
|
|
}
|
|
|
|
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;
|
|
|
|
char *expn_name;
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
if (strchr(ref->name, '^'))
|
|
continue; /* a dereference item */
|
|
if (match_name_with_pattern(refspec->src, ref->name,
|
|
refspec->dst, &expn_name)) {
|
|
struct ref *cpy = copy_ref(ref);
|
|
|
|
cpy->peer_ref = alloc_ref(expn_name);
|
|
free(expn_name);
|
|
if (refspec->force)
|
|
cpy->peer_ref->force = 1;
|
|
*tail = cpy;
|
|
tail = &cpy->next;
|
|
}
|
|
}
|
|
|
|
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, ref_fetch_rules))
|
|
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 (!prefixcmp(name, "refs/"))
|
|
return alloc_ref(name);
|
|
|
|
if (!prefixcmp(name, "heads/") ||
|
|
!prefixcmp(name, "tags/") ||
|
|
!prefixcmp(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";
|
|
|
|
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) {
|
|
int st = check_ref_format((*rmp)->peer_ref->name + 5);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL) {
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Return true if there is anything to report, otherwise false.
|
|
*/
|
|
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;
|
|
|
|
/*
|
|
* Nothing to report unless we are marked to build on top of
|
|
* somebody else.
|
|
*/
|
|
if (!branch ||
|
|
!branch->merge || !branch->merge[0] || !branch->merge[0]->dst)
|
|
return 0;
|
|
|
|
/*
|
|
* If what we used to build on no longer exists, there is
|
|
* nothing to report.
|
|
*/
|
|
base = branch->merge[0]->dst;
|
|
if (!resolve_ref(base, sha1, 1, NULL))
|
|
return 0;
|
|
theirs = lookup_commit_reference(sha1);
|
|
if (!theirs)
|
|
return 0;
|
|
|
|
if (!resolve_ref(branch->refname, sha1, 1, NULL))
|
|
return 0;
|
|
ours = lookup_commit_reference(sha1);
|
|
if (!ours)
|
|
return 0;
|
|
|
|
/* are we the same? */
|
|
if (theirs == ours)
|
|
return 0;
|
|
|
|
/* 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 num_ours, num_theirs;
|
|
const char *base;
|
|
|
|
if (!stat_tracking_info(branch, &num_ours, &num_theirs))
|
|
return 0;
|
|
|
|
base = branch->merge[0]->dst;
|
|
base = shorten_unambiguous_ref(base, 0);
|
|
if (!num_theirs)
|
|
strbuf_addf(sb, "Your branch is ahead of '%s' "
|
|
"by %d commit%s.\n",
|
|
base, num_ours, (num_ours == 1) ? "" : "s");
|
|
else if (!num_ours)
|
|
strbuf_addf(sb, "Your branch is behind '%s' "
|
|
"by %d commit%s, "
|
|
"and can be fast-forwarded.\n",
|
|
base, num_theirs, (num_theirs == 1) ? "" : "s");
|
|
else
|
|
strbuf_addf(sb, "Your branch and '%s' have diverged,\n"
|
|
"and have %d and %d different commit(s) each, "
|
|
"respectively.\n",
|
|
base, num_ours, num_theirs);
|
|
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_ref_format(refname + 5))
|
|
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 && !hashcmp(r->old_sha1, head->old_sha1)) {
|
|
*tail = copy_ref(r);
|
|
tail = &((*tail)->next);
|
|
if (!all)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
struct stale_heads_info {
|
|
struct remote *remote;
|
|
struct string_list *ref_names;
|
|
struct ref **stale_refs_tail;
|
|
};
|
|
|
|
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 refspec refspec;
|
|
memset(&refspec, 0, sizeof(refspec));
|
|
refspec.dst = (char *)refname;
|
|
if (!remote_find_tracking(info->remote, &refspec)) {
|
|
if (!((flags & REF_ISSYMREF) ||
|
|
string_list_has_string(info->ref_names, refspec.src))) {
|
|
struct ref *ref = make_linked_ref(refname, &info->stale_refs_tail);
|
|
hashcpy(ref->new_sha1, sha1);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
struct ref *get_stale_heads(struct remote *remote, struct ref *fetch_map)
|
|
{
|
|
struct ref *ref, *stale_refs = NULL;
|
|
struct string_list ref_names = { NULL, 0, 0, 0 };
|
|
struct stale_heads_info info;
|
|
info.remote = remote;
|
|
info.ref_names = &ref_names;
|
|
info.stale_refs_tail = &stale_refs;
|
|
for (ref = fetch_map; ref; ref = ref->next)
|
|
string_list_append(ref->name, &ref_names);
|
|
sort_string_list(&ref_names);
|
|
for_each_ref(get_stale_heads_cb, &info);
|
|
string_list_clear(&ref_names, 0);
|
|
return stale_refs;
|
|
}
|