mirrors/git
0
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-11-24 18:33:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge branch 'db/host-alias'

Browse Source 
* db/host-alias:
  url rewriting: take longest and first match
  Add support for url aliases in config files
  Use ALLOC_GROW in remote.{c,h}
This commit is contained in:
Junio C Hamano 2008-02-27 11:54:13 -08:00
commit 5372715ed2
5 changed files with 231 additions and 75 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/config.txt
View File

@ -899,6 +899,17 @@ tar.umask::
archiving user's umask will be used instead. See umask(2) and
linkgit:git-archive[1].
url.<base>.insteadOf::
Any URL that starts with this value will be rewritten to
start, instead, with <base>. In cases where some site serves a
large number of repositories, and serves them with multiple
access methods, and some users need to use different access
methods, this feature allows people to specify any of the
equivalent URLs and have git automatically rewrite the URL to
the best alternative for the particular user, even for a
never-before-seen repository on the site. When more than one
insteadOf strings match a given URL, the longest match is used.
user.email::
Your email address to be recorded in any newly created commits.
Can be overridden by the 'GIT_AUTHOR_EMAIL', 'GIT_COMMITTER_EMAIL', and

23
Documentation/urls.txt
View File

@ -44,3 +44,26 @@ endif::git-clone[]
ifdef::git-clone[]
They are equivalent, except the former implies --local option.
endif::git-clone[]
If there are a large number of similarly-named remote repositories and
you want to use a different format for them (such that the URLs you
use will be rewritten into URLs that work), you can create a
configuration section of the form:
------------
[url "<actual url base>"]
insteadOf = <other url base>
------------
For example, with this:
------------
[url "git://git.host.xz/"]
insteadOf = host.xz:/path/to/
insteadOf = work:
------------
a URL like "work:repo.git" or like "host.xz:/path/to/repo.git" will be
rewritten in any context that takes a URL to be "git://git.host.xz/repo.git".

237
remote.c
View File

@ -2,123 +2,184 @@
#include "remote.h"
#include "refs.h"
struct counted_string {
size_t len;
const char *s;
};
struct rewrite {
const char *base;
size_t baselen;
struct counted_string *instead_of;
int instead_of_nr;
int instead_of_alloc;
};
static struct remote **remotes;
static int allocated_remotes;
static int remotes_alloc;
static int remotes_nr;
static struct branch **branches;
static int allocated_branches;
static int branches_alloc;
static int branches_nr;
static struct branch *current_branch;
static const char *default_remote_name;
static struct rewrite **rewrite;
static int rewrite_alloc;
static int rewrite_nr;
#define BUF_SIZE (2048)
static char buffer[BUF_SIZE];
static const char *alias_url(const char *url)
{
int i, j;
char *ret;
struct counted_string *longest;
int longest_i;
longest = NULL;
longest_i = -1;
for (i = 0; i < rewrite_nr; i++) {
if (!rewrite[i])
continue;
for (j = 0; j < rewrite[i]->instead_of_nr; j++) {
if (!prefixcmp(url, rewrite[i]->instead_of[j].s) &&
(!longest ||
longest->len < rewrite[i]->instead_of[j].len)) {
longest = &(rewrite[i]->instead_of[j]);
longest_i = i;
}
}
}
if (!longest)
return url;
ret = malloc(rewrite[longest_i]->baselen +
(strlen(url) - longest->len) + 1);
strcpy(ret, rewrite[longest_i]->base);
strcpy(ret + rewrite[longest_i]->baselen, url + longest->len);
return ret;
}
static void add_push_refspec(struct remote *remote, const char *ref)
{
int nr = remote->push_refspec_nr + 1;
remote->push_refspec =
xrealloc(remote->push_refspec, nr * sizeof(char *));
remote->push_refspec[nr-1] = ref;
remote->push_refspec_nr = nr;
ALLOC_GROW(remote->push_refspec,
remote->push_refspec_nr + 1,
remote->push_refspec_alloc);
remote->push_refspec[remote->push_refspec_nr++] = ref;
}
static void add_fetch_refspec(struct remote *remote, const char *ref)
{
int nr = remote->fetch_refspec_nr + 1;
remote->fetch_refspec =
xrealloc(remote->fetch_refspec, nr * sizeof(char *));
remote->fetch_refspec[nr-1] = ref;
remote->fetch_refspec_nr = nr;
ALLOC_GROW(remote->fetch_refspec,
remote->fetch_refspec_nr + 1,
remote->fetch_refspec_alloc);
remote->fetch_refspec[remote->fetch_refspec_nr++] = ref;
}
static void add_url(struct remote *remote, const char *url)
{
int nr = remote->url_nr + 1;
remote->url =
xrealloc(remote->url, nr * sizeof(char *));
remote->url[nr-1] = url;
remote->url_nr = nr;
ALLOC_GROW(remote->url, remote->url_nr + 1, remote->url_alloc);
remote->url[remote->url_nr++] = url;
}
static void add_url_alias(struct remote *remote, const char *url)
{
add_url(remote, alias_url(url));
}
static struct remote *make_remote(const char *name, int len)
{
int i, empty = -1;
struct remote *ret;
int i;
for (i = 0; i < allocated_remotes; i++) {
if (!remotes[i]) {
if (empty < 0)
empty = i;
} else {
if (len ? (!strncmp(name, remotes[i]->name, len) &&
!remotes[i]->name[len]) :
!strcmp(name, remotes[i]->name))
return remotes[i];
}
for (i = 0; i < remotes_nr; i++) {
if (len ? (!strncmp(name, remotes[i]->name, len) &&
!remotes[i]->name[len]) :
!strcmp(name, remotes[i]->name))
return remotes[i];
}
if (empty < 0) {
empty = allocated_remotes;
allocated_remotes += allocated_remotes ? allocated_remotes : 1;
remotes = xrealloc(remotes,
sizeof(*remotes) * allocated_remotes);
memset(remotes + empty, 0,
(allocated_remotes - empty) * sizeof(*remotes));
}
remotes[empty] = xcalloc(1, sizeof(struct remote));
ret = xcalloc(1, sizeof(struct remote));
ALLOC_GROW(remotes, remotes_nr + 1, remotes_alloc);
remotes[remotes_nr++] = ret;
if (len)
remotes[empty]->name = xstrndup(name, len);
ret->name = xstrndup(name, len);
else
remotes[empty]->name = xstrdup(name);
return remotes[empty];
ret->name = xstrdup(name);
return ret;
}
static void add_merge(struct branch *branch, const char *name)
{
int nr = branch->merge_nr + 1;
branch->merge_name =
xrealloc(branch->merge_name, nr * sizeof(char *));
branch->merge_name[nr-1] = name;
branch->merge_nr = nr;
ALLOC_GROW(branch->merge_name, branch->merge_nr + 1,
branch->merge_alloc);
branch->merge_name[branch->merge_nr++] = name;
}
static struct branch *make_branch(const char *name, int len)
{
int i, empty = -1;
struct branch *ret;
int i;
char *refname;
for (i = 0; i < allocated_branches; i++) {
if (!branches[i]) {
if (empty < 0)
empty = i;
} else {
if (len ? (!strncmp(name, branches[i]->name, len) &&
!branches[i]->name[len]) :
!strcmp(name, branches[i]->name))
return branches[i];
}
for (i = 0; i < branches_nr; i++) {
if (len ? (!strncmp(name, branches[i]->name, len) &&
!branches[i]->name[len]) :
!strcmp(name, branches[i]->name))
return branches[i];
}
if (empty < 0) {
empty = allocated_branches;
allocated_branches += allocated_branches ? allocated_branches : 1;
branches = xrealloc(branches,
sizeof(*branches) * allocated_branches);
memset(branches + empty, 0,
(allocated_branches - empty) * sizeof(*branches));
}
branches[empty] = xcalloc(1, sizeof(struct branch));
ALLOC_GROW(branches, branches_nr + 1, branches_alloc);
ret = xcalloc(1, sizeof(struct branch));
branches[branches_nr++] = ret;
if (len)
branches[empty]->name = xstrndup(name, len);
ret->name = xstrndup(name, len);
else
branches[empty]->name = xstrdup(name);
ret->name = xstrdup(name);
refname = malloc(strlen(name) + strlen("refs/heads/") + 1);
strcpy(refname, "refs/heads/");
strcpy(refname + strlen("refs/heads/"),
branches[empty]->name);
branches[empty]->refname = refname;
strcpy(refname + strlen("refs/heads/"), ret->name);
ret->refname = refname;
return branches[empty];
return ret;
}
static struct rewrite *make_rewrite(const char *base, int len)
{
struct rewrite *ret;
int i;
for (i = 0; i < rewrite_nr; i++) {
if (len
? (len == rewrite[i]->baselen &&
!strncmp(base, rewrite[i]->base, len))
: !strcmp(base, rewrite[i]->base))
return rewrite[i];
}
ALLOC_GROW(rewrite, rewrite_nr + 1, rewrite_alloc);
ret = xcalloc(1, sizeof(struct rewrite));
rewrite[rewrite_nr++] = ret;
if (len) {
ret->base = xstrndup(base, len);
ret->baselen = len;
}
else {
ret->base = xstrdup(base);
ret->baselen = strlen(base);
}
return ret;
}
static void add_instead_of(struct rewrite *rewrite, const char *instead_of)
{
ALLOC_GROW(rewrite->instead_of, rewrite->instead_of_nr + 1, rewrite->instead_of_alloc);
rewrite->instead_of[rewrite->instead_of_nr].s = instead_of;
rewrite->instead_of[rewrite->instead_of_nr].len = strlen(instead_of);
rewrite->instead_of_nr++;
}
static void read_remotes_file(struct remote *remote)
@ -154,7 +215,7 @@ static void read_remotes_file(struct remote *remote)
switch (value_list) {
case 0:
add_url(remote, xstrdup(s));
add_url_alias(remote, xstrdup(s));
break;
case 1:
add_push_refspec(remote, xstrdup(s));
@ -206,7 +267,7 @@ static void read_branches_file(struct remote *remote)
} else {
branch = "refs/heads/master";
}
add_url(remote, p);
add_url_alias(remote, p);
add_fetch_refspec(remote, branch);
remote->fetch_tags = 1; /* always auto-follow */
}
@ -236,6 +297,19 @@ static int handle_config(const char *key, const char *value)
}
return 0;
}
if (!prefixcmp(key, "url.")) {
struct rewrite *rewrite;
name = key + 5;
subkey = strrchr(name, '.');
if (!subkey)
return 0;
rewrite = make_rewrite(name, subkey - name);
if (!strcmp(subkey, ".insteadof")) {
if (!value)
return config_error_nonbool(key);
add_instead_of(rewrite, xstrdup(value));
}
}
if (prefixcmp(key, "remote."))
return 0;
name = key + 7;
@ -287,6 +361,18 @@ static int handle_config(const char *key, const char *value)
return 0;
}
static void alias_all_urls(void)
{
int i, j;
for (i = 0; i < remotes_nr; i++) {
if (!remotes[i])
continue;
for (j = 0; j < remotes[i]->url_nr; j++) {
remotes[i]->url[j] = alias_url(remotes[i]->url[j]);
}
}
}
static void read_config(void)
{
unsigned char sha1[20];
@ -303,6 +389,7 @@ static void read_config(void)
make_branch(head_ref + strlen("refs/heads/"), 0);
}
git_config(handle_config);
alias_all_urls();
}
struct refspec *parse_ref_spec(int nr_refspec, const char **refspec)
@ -368,7 +455,7 @@ struct remote *remote_get(const char *name)
read_branches_file(ret);
}
if (!ret->url)
add_url(ret, name);
add_url_alias(ret, name);
if (!ret->url)
return NULL;
ret->fetch = parse_ref_spec(ret->fetch_refspec_nr, ret->fetch_refspec);
@ -380,7 +467,7 @@ int for_each_remote(each_remote_fn fn, void *priv)
{
int i, result = 0;
read_config();
for (i = 0; i < allocated_remotes && !result; i++) {
for (i = 0; i < remotes_nr && !result; i++) {
struct remote *r = remotes[i];
if (!r)
continue;

4
remote.h
View File

@ -6,14 +6,17 @@ struct remote {
const char **url;
int url_nr;
int url_alloc;
const char **push_refspec;
struct refspec *push;
int push_refspec_nr;
int push_refspec_alloc;
const char **fetch_refspec;
struct refspec *fetch;
int fetch_refspec_nr;
int fetch_refspec_alloc;
/*
* -1 to never fetch tags
@ -100,6 +103,7 @@ struct branch {
const char **merge_name;
struct refspec **merge;
int merge_nr;
int merge_alloc;
};
struct branch *branch_get(const char *name);

31
t/t5516-fetch-push.sh
View File

@ -100,6 +100,23 @@ test_expect_success 'fetch with wildcard' '
)
'
test_expect_success 'fetch with insteadOf' '
mk_empty &&
(
TRASH=$(pwd) &&
cd testrepo &&
git config url./$TRASH/.insteadOf trash/
git config remote.up.url trash/. &&
git config remote.up.fetch "refs/heads/*:refs/remotes/origin/*" &&
git fetch up &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'push without wildcard' '
mk_empty &&
@ -126,6 +143,20 @@ test_expect_success 'push with wildcard' '
)
'
test_expect_success 'push with insteadOf' '
mk_empty &&
TRASH=$(pwd) &&
git config url./$TRASH/.insteadOf trash/ &&
git push trash/testrepo refs/heads/master:refs/remotes/origin/master &&
(
cd testrepo &&
r=$(git show-ref -s --verify refs/remotes/origin/master) &&
test "z$r" = "z$the_commit" &&
test 1 = $(git for-each-ref refs/remotes/origin | wc -l)
)
'
test_expect_success 'push with matching heads' '
mk_test heads/master &&