worktree: add top-level worktree.c

worktree.c contains functions to work with and get information from
worktrees.  This introduction moves functions related to worktrees
from branch.c into worktree.c

Signed-off-by: Michael Rappazzo <rappazzo@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Michael Rappazzo 2015-10-02 07:55:31 -04:00 коммит произвёл Junio C Hamano
Родитель 8d530c4d64
Коммит ac6c561b59
6 изменённых файлов: 97 добавлений и 87 удалений

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@ -807,6 +807,7 @@ LIB_OBJS += version.o
LIB_OBJS += versioncmp.o
LIB_OBJS += walker.o
LIB_OBJS += wildmatch.o
LIB_OBJS += worktree.o
LIB_OBJS += wrapper.o
LIB_OBJS += write_or_die.o
LIB_OBJS += ws.o

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@ -4,6 +4,7 @@
#include "refs.h"
#include "remote.h"
#include "commit.h"
#include "worktree.h"
struct tracking {
struct refspec spec;
@ -311,84 +312,6 @@ void remove_branch_state(void)
unlink(git_path_squash_msg());
}
static char *find_linked_symref(const char *symref, const char *branch,
const char *id)
{
struct strbuf sb = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
char *existing = NULL;
/*
* $GIT_COMMON_DIR/$symref (e.g. HEAD) is practically outside
* $GIT_DIR so resolve_ref_unsafe() won't work (it uses
* git_path). Parse the ref ourselves.
*/
if (id)
strbuf_addf(&path, "%s/worktrees/%s/%s", get_git_common_dir(), id, symref);
else
strbuf_addf(&path, "%s/%s", get_git_common_dir(), symref);
if (!strbuf_readlink(&sb, path.buf, 0)) {
if (!starts_with(sb.buf, "refs/") ||
check_refname_format(sb.buf, 0))
goto done;
} else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
starts_with(sb.buf, "ref:")) {
strbuf_remove(&sb, 0, strlen("ref:"));
strbuf_trim(&sb);
} else
goto done;
if (strcmp(sb.buf, branch))
goto done;
if (id) {
strbuf_reset(&path);
strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id);
if (strbuf_read_file(&gitdir, path.buf, 0) <= 0)
goto done;
strbuf_rtrim(&gitdir);
} else
strbuf_addstr(&gitdir, get_git_common_dir());
strbuf_strip_suffix(&gitdir, ".git");
existing = strbuf_detach(&gitdir, NULL);
done:
strbuf_release(&path);
strbuf_release(&sb);
strbuf_release(&gitdir);
return existing;
}
char *find_shared_symref(const char *symref, const char *target)
{
struct strbuf path = STRBUF_INIT;
DIR *dir;
struct dirent *d;
char *existing;
if ((existing = find_linked_symref(symref, target, NULL)))
return existing;
strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
dir = opendir(path.buf);
strbuf_release(&path);
if (!dir)
return NULL;
while ((d = readdir(dir)) != NULL) {
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
existing = find_linked_symref(symref, target, d->d_name);
if (existing)
goto done;
}
done:
closedir(dir);
return existing;
}
void die_if_checked_out(const char *branch)
{
char *existing;

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@ -59,12 +59,4 @@ extern int read_branch_desc(struct strbuf *, const char *branch_name);
*/
extern void die_if_checked_out(const char *branch);
/*
* Check if a per-worktree symref points to a ref in the main worktree
* or any linked worktree, and return the path to the exising worktree
* if it is. Returns NULL if there is no existing ref. The caller is
* responsible for freeing the returned path.
*/
extern char *find_shared_symref(const char *symref, const char *target);
#endif

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@ -19,7 +19,7 @@
#include "string-list.h"
#include "notes-merge.h"
#include "notes-utils.h"
#include "branch.h"
#include "worktree.h"
static const char * const git_notes_usage[] = {
N_("git notes [--ref <notes-ref>] [list [<object>]]"),

82
worktree.c Normal file
Просмотреть файл

@ -0,0 +1,82 @@
#include "cache.h"
#include "refs.h"
#include "strbuf.h"
#include "worktree.h"
static char *find_linked_symref(const char *symref, const char *branch,
const char *id)
{
struct strbuf sb = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
struct strbuf gitdir = STRBUF_INIT;
char *existing = NULL;
/*
* $GIT_COMMON_DIR/$symref (e.g. HEAD) is practically outside
* $GIT_DIR so resolve_ref_unsafe() won't work (it uses
* git_path). Parse the ref ourselves.
*/
if (id)
strbuf_addf(&path, "%s/worktrees/%s/%s", get_git_common_dir(), id, symref);
else
strbuf_addf(&path, "%s/%s", get_git_common_dir(), symref);
if (!strbuf_readlink(&sb, path.buf, 0)) {
if (!starts_with(sb.buf, "refs/") ||
check_refname_format(sb.buf, 0))
goto done;
} else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
starts_with(sb.buf, "ref:")) {
strbuf_remove(&sb, 0, strlen("ref:"));
strbuf_trim(&sb);
} else
goto done;
if (strcmp(sb.buf, branch))
goto done;
if (id) {
strbuf_reset(&path);
strbuf_addf(&path, "%s/worktrees/%s/gitdir", get_git_common_dir(), id);
if (strbuf_read_file(&gitdir, path.buf, 0) <= 0)
goto done;
strbuf_rtrim(&gitdir);
} else
strbuf_addstr(&gitdir, get_git_common_dir());
strbuf_strip_suffix(&gitdir, ".git");
existing = strbuf_detach(&gitdir, NULL);
done:
strbuf_release(&path);
strbuf_release(&sb);
strbuf_release(&gitdir);
return existing;
}
char *find_shared_symref(const char *symref, const char *target)
{
struct strbuf path = STRBUF_INIT;
DIR *dir;
struct dirent *d;
char *existing;
if ((existing = find_linked_symref(symref, target, NULL)))
return existing;
strbuf_addf(&path, "%s/worktrees", get_git_common_dir());
dir = opendir(path.buf);
strbuf_release(&path);
if (!dir)
return NULL;
while ((d = readdir(dir)) != NULL) {
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
existing = find_linked_symref(symref, target, d->d_name);
if (existing)
goto done;
}
done:
closedir(dir);
return existing;
}

12
worktree.h Normal file
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@ -0,0 +1,12 @@
#ifndef WORKTREE_H
#define WORKTREE_H
/*
* Check if a per-worktree symref points to a ref in the main worktree
* or any linked worktree, and return the path to the exising worktree
* if it is. Returns NULL if there is no existing ref. The caller is
* responsible for freeing the returned path.
*/
extern char *find_shared_symref(const char *symref, const char *target);
#endif