зеркало из https://github.com/microsoft/git.git
1225 строки
28 KiB
C
1225 строки
28 KiB
C
#include "cache.h"
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#include "remote.h"
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#include "refs.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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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 struct rewrite **rewrite;
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static int rewrite_alloc;
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static int rewrite_nr;
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#define BUF_SIZE (2048)
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static char buffer[BUF_SIZE];
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static const char *alias_url(const char *url)
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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 < rewrite_nr; i++) {
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if (!rewrite[i])
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continue;
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for (j = 0; j < rewrite[i]->instead_of_nr; j++) {
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if (!prefixcmp(url, rewrite[i]->instead_of[j].s) &&
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(!longest ||
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longest->len < rewrite[i]->instead_of[j].len)) {
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longest = &(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 = malloc(rewrite[longest_i]->baselen +
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(strlen(url) - longest->len) + 1);
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strcpy(ret, rewrite[longest_i]->base);
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strcpy(ret + 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_url_alias(struct remote *remote, const char *url)
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{
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add_url(remote, alias_url(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 = malloc(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(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 < rewrite_nr; i++) {
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if (len
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? (len == rewrite[i]->baselen &&
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!strncmp(base, rewrite[i]->base, len))
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: !strcmp(base, rewrite[i]->base))
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return rewrite[i];
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}
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ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc);
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ret = xcalloc(1, sizeof(struct rewrite));
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rewrite[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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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;
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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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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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strbuf_init(&branch, 0);
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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, 0));
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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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} 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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rewrite = make_rewrite(name, subkey - name);
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if (!strcmp(subkey, ".insteadof")) {
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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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subkey = strrchr(name, '.');
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if (!subkey)
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return error("Config with no key for remote %s", name);
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if (*subkey == '/') {
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warning("Config remote shorthand cannot begin with '/': %s", name);
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return 0;
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}
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remote = make_remote(name, subkey - name);
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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, ".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, ".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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}
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return 0;
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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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if (!remotes[i])
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continue;
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for (j = 0; j < remotes[i]->url_nr; j++) {
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remotes[i]->url[j] = alias_url(remotes[i]->url[j]);
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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;
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int flag;
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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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static struct refspec *parse_refspec_internal(int nr_refspec, const char **refspec, int fetch, int verify)
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{
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int i;
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int st;
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struct refspec *rs = xcalloc(sizeof(*rs), nr_refspec);
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for (i = 0; i < nr_refspec; i++) {
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size_t llen, rlen;
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int is_glob;
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const char *lhs, *rhs;
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llen = rlen = is_glob = 0;
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lhs = refspec[i];
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if (*lhs == '+') {
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rs[i].force = 1;
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lhs++;
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}
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rhs = strrchr(lhs, ':');
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/*
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* Before going on, special case ":" (or "+:") as a refspec
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* for matching refs.
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*/
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if (!fetch && rhs == lhs && rhs[1] == '\0') {
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rs[i].matching = 1;
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continue;
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}
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if (rhs) {
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rhs++;
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rlen = strlen(rhs);
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is_glob = (2 <= rlen && !strcmp(rhs + rlen - 2, "/*"));
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if (is_glob)
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rlen -= 2;
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rs[i].dst = xstrndup(rhs, rlen);
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}
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llen = (rhs ? (rhs - lhs - 1) : strlen(lhs));
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if (2 <= llen && !memcmp(lhs + llen - 2, "/*", 2)) {
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if ((rhs && !is_glob) || (!rhs && fetch))
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goto invalid;
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is_glob = 1;
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llen -= 2;
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} else if (rhs && is_glob) {
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goto invalid;
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}
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rs[i].pattern = is_glob;
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rs[i].src = xstrndup(lhs, llen);
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if (fetch) {
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/*
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* LHS
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* - empty is allowed; it means HEAD.
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* - otherwise it must be a valid looking ref.
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*/
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if (!*rs[i].src)
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; /* empty is ok */
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else {
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st = check_ref_format(rs[i].src);
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if (st && st != CHECK_REF_FORMAT_ONELEVEL)
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goto invalid;
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}
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/*
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* RHS
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* - missing is ok, and is same as empty.
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* - empty is ok; it means not to store.
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* - otherwise it must be a valid looking ref.
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*/
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if (!rs[i].dst) {
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; /* ok */
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} else if (!*rs[i].dst) {
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; /* ok */
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} else {
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st = check_ref_format(rs[i].dst);
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if (st && st != CHECK_REF_FORMAT_ONELEVEL)
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goto invalid;
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}
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} else {
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/*
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* LHS
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* - empty is allowed; it means delete.
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* - when wildcarded, it must be a valid looking ref.
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* - otherwise, it must be an extended SHA-1, but
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* there is no existing way to validate this.
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*/
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if (!*rs[i].src)
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; /* empty is ok */
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else if (is_glob) {
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st = check_ref_format(rs[i].src);
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if (st && st != CHECK_REF_FORMAT_ONELEVEL)
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goto invalid;
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}
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else
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; /* anything goes, for now */
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/*
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* RHS
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* - missing is allowed, but LHS then must be a
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* valid looking ref.
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* - empty is not allowed.
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* - otherwise it must be a valid looking ref.
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*/
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if (!rs[i].dst) {
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st = check_ref_format(rs[i].src);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
} else if (!*rs[i].dst) {
|
|
goto invalid;
|
|
} else {
|
|
st = check_ref_format(rs[i].dst);
|
|
if (st && st != CHECK_REF_FORMAT_ONELEVEL)
|
|
goto invalid;
|
|
}
|
|
}
|
|
}
|
|
return rs;
|
|
|
|
invalid:
|
|
if (verify) {
|
|
free(rs);
|
|
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);
|
|
if (refspec)
|
|
free(refspec);
|
|
return !!refspec;
|
|
}
|
|
|
|
struct refspec *parse_fetch_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 1, 0);
|
|
}
|
|
|
|
struct refspec *parse_push_refspec(int nr_refspec, const char **refspec)
|
|
{
|
|
return parse_refspec_internal(nr_refspec, refspec, 0, 0);
|
|
}
|
|
|
|
static int valid_remote_nick(const char *name)
|
|
{
|
|
if (!name[0] || /* not empty */
|
|
(name[0] == '.' && /* not "." */
|
|
(!name[1] || /* not ".." */
|
|
(name[1] == '.' && !name[2]))))
|
|
return 0;
|
|
return !strchr(name, '/'); /* no slash */
|
|
}
|
|
|
|
struct remote *remote_get(const char *name)
|
|
{
|
|
struct remote *ret;
|
|
|
|
read_config();
|
|
if (!name)
|
|
name = default_remote_name;
|
|
ret = make_remote(name, 0);
|
|
if (valid_remote_nick(name)) {
|
|
if (!ret->url)
|
|
read_remotes_file(ret);
|
|
if (!ret->url)
|
|
read_branches_file(ret);
|
|
}
|
|
if (!ret->url)
|
|
add_url_alias(ret, name);
|
|
if (!ret->url)
|
|
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 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 ref **posn;
|
|
struct ref *next;
|
|
for (; ref_map; ref_map = ref_map->next) {
|
|
if (!ref_map->peer_ref)
|
|
continue;
|
|
posn = &ref_map->next;
|
|
while (*posn) {
|
|
if ((*posn)->peer_ref &&
|
|
!strcmp((*posn)->peer_ref->name,
|
|
ref_map->peer_ref->name)) {
|
|
if (strcmp((*posn)->name, ref_map->name))
|
|
die("%s tracks both %s and %s",
|
|
ref_map->peer_ref->name,
|
|
(*posn)->name, ref_map->name);
|
|
next = (*posn)->next;
|
|
free((*posn)->peer_ref);
|
|
free(*posn);
|
|
*posn = next;
|
|
} else {
|
|
posn = &(*posn)->next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 (!prefixcmp(needle, key) &&
|
|
needle[strlen(key)] == '/') {
|
|
*result = xmalloc(strlen(value) +
|
|
strlen(needle) -
|
|
strlen(key) + 1);
|
|
strcpy(*result, value);
|
|
strcpy(*result + strlen(value),
|
|
needle + strlen(key));
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
} else if (!strcmp(needle, key)) {
|
|
*result = xstrdup(value);
|
|
refspec->force = fetch->force;
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
struct ref *alloc_ref(unsigned namelen)
|
|
{
|
|
struct ref *ret = xmalloc(sizeof(struct ref) + namelen);
|
|
memset(ret, 0, sizeof(struct ref) + namelen);
|
|
return ret;
|
|
}
|
|
|
|
struct ref *alloc_ref_from_str(const char* str)
|
|
{
|
|
struct ref *ret = alloc_ref(strlen(str) + 1);
|
|
strcpy(ret->name, str);
|
|
return ret;
|
|
}
|
|
|
|
static struct ref *copy_ref(const struct ref *ref)
|
|
{
|
|
struct ref *ret = xmalloc(sizeof(struct ref) + strlen(ref->name) + 1);
|
|
memcpy(ret, ref, sizeof(struct ref) + strlen(ref->name) + 1);
|
|
ret->next = NULL;
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void free_ref(struct ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
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->peer_ref);
|
|
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(20);
|
|
strcpy(ref->name, "(delete)");
|
|
hashclr(ref->new_sha1);
|
|
return ref;
|
|
}
|
|
if (get_sha1(name, sha1))
|
|
return NULL;
|
|
ref = alloc_ref_from_str(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_from_str(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;
|
|
|
|
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:
|
|
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);
|
|
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 = 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 &&
|
|
!prefixcmp(src->name, rs[i].src) &&
|
|
src->name[strlen(rs[i].src)] == '/')
|
|
return rs + i;
|
|
}
|
|
if (matching_refs != -1)
|
|
return rs + matching_refs;
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* 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, struct ref ***dst_tail,
|
|
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;
|
|
static const char *default_refspec[] = { ":", 0 };
|
|
|
|
if (!nr_refspec) {
|
|
nr_refspec = 1;
|
|
refspec = default_refspec;
|
|
}
|
|
rs = parse_push_refspec(nr_refspec, (const char **) refspec);
|
|
if (match_explicit_refs(src, dst, dst_tail, rs, nr_refspec))
|
|
return -1;
|
|
|
|
/* 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;
|
|
dst_name = xmalloc(strlen(dst_side) +
|
|
strlen(src->name) -
|
|
strlen(pat->src) + 2);
|
|
strcpy(dst_name, dst_side);
|
|
strcat(dst_name, src->name + strlen(pat->src));
|
|
}
|
|
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 = src;
|
|
dst_peer->force = pat->force;
|
|
free_name:
|
|
free(dst_name);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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]);
|
|
remote_find_tracking(ret->remote,
|
|
ret->merge[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;
|
|
|
|
int remote_prefix_len = strlen(refspec->src);
|
|
int local_prefix_len = strlen(refspec->dst);
|
|
|
|
for (ref = remote_refs; ref; ref = ref->next) {
|
|
if (strchr(ref->name, '^'))
|
|
continue; /* a dereference item */
|
|
if (!prefixcmp(ref->name, refspec->src)) {
|
|
const char *match;
|
|
struct ref *cpy = copy_ref(ref);
|
|
match = ref->name + remote_prefix_len;
|
|
|
|
cpy->peer_ref = alloc_ref(local_prefix_len +
|
|
strlen(match) + 1);
|
|
sprintf(cpy->peer_ref->name, "%s%s",
|
|
refspec->dst, match);
|
|
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)
|
|
{
|
|
struct ref *ret;
|
|
if (!name)
|
|
return NULL;
|
|
|
|
if (!prefixcmp(name, "refs/")) {
|
|
return alloc_ref_from_str(name);
|
|
}
|
|
|
|
if (!prefixcmp(name, "heads/") ||
|
|
!prefixcmp(name, "tags/") ||
|
|
!prefixcmp(name, "remotes/")) {
|
|
ret = alloc_ref(strlen(name) + 6);
|
|
sprintf(ret->name, "refs/%s", name);
|
|
return ret;
|
|
}
|
|
|
|
ret = alloc_ref(strlen(name) + 12);
|
|
sprintf(ret->name, "refs/heads/%s", name);
|
|
return ret;
|
|
}
|
|
|
|
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;
|
|
}
|