Merge branch 'cb/setup'

[thirdparty/git.git] / setup.c

diff --git a/setup.c b/setup.c
index 8031f99e978a27d394b04c998623388d2ab762b6..021d0133ae1d6cf7f3a6a8284cb5b6e9a42dbe0d 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -4,7 +4,7 @@
 static int inside_git_dir = -1;
 static int inside_work_tree = -1;
 
-const char *prefix_path(const char *prefix, int len, const char *path)
+char *prefix_path(const char *prefix, int len, const char *path)
 {
        const char *orig = path;
        char *sanitized;
@@ -49,7 +49,7 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
 {
        static char path[PATH_MAX];
 #ifndef WIN32
-       if (!pfx || !*pfx || is_absolute_path(arg))
+       if (!pfx_len || is_absolute_path(arg))
                return arg;
        memcpy(path, pfx, pfx_len);
        strcpy(path + pfx_len, arg);
@@ -58,7 +58,7 @@ const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
        /* don't add prefix to absolute paths, but still replace '\' by '/' */
        if (is_absolute_path(arg))
                pfx_len = 0;
-       else
+       else if (pfx_len)
                memcpy(path, pfx, pfx_len);
        strcpy(path + pfx_len, arg);
        for (p = path + pfx_len; *p; p++)
@@ -414,6 +414,15 @@ static const char *setup_discovered_git_dir(const char *gitdir,
        if (check_repository_format_gently(gitdir, nongit_ok))
                return NULL;
 
+       /* --work-tree is set without --git-dir; use discovered one */
+       if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
+               if (offset != len && !is_absolute_path(gitdir))
+                       gitdir = xstrdup(make_absolute_path(gitdir));
+               if (chdir(cwd))
+                       die_errno("Could not come back to cwd");
+               return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+       }
+
        /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
        if (is_bare_repository_cfg > 0) {
                set_git_dir(offset == len ? gitdir : make_absolute_path(gitdir));
@@ -446,6 +455,16 @@ static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongi
        if (check_repository_format_gently(".", nongit_ok))
                return NULL;
 
+       /* --work-tree is set without --git-dir; use discovered one */
+       if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
+               const char *gitdir;
+
+               gitdir = offset == len ? "." : xmemdupz(cwd, offset);
+               if (chdir(cwd))
+                       die_errno("Could not come back to cwd");
+               return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+       }
+
        inside_git_dir = 1;
        inside_work_tree = 0;
        if (offset != len) {
@@ -583,8 +602,10 @@ const char *setup_git_directory_gently(int *nongit_ok)
        const char *prefix;
 
        prefix = setup_git_directory_gently_1(nongit_ok);
-       if (startup_info)
+       if (startup_info) {
                startup_info->have_repository = !nongit_ok || !*nongit_ok;
+               startup_info->prefix = prefix;
+       }
        return prefix;
 }