Merge branch 'js/config' into pu

* js/config:
  repo-config: learn the flag "--no-local"
  Read configuration also from ~/.gitconfig

diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index d894f53..11bd9c0 100644 (file)
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -8,7 +8,7 @@ git-read-tree - Reads tree information into the index
 
 SYNOPSIS
 --------
-'git-read-tree' (<tree-ish> | [[-m [--aggressive]| --reset] [-u | -i]] <tree-ish1> [<tree-ish2> [<tree-ish3>]])
+'git-read-tree' (<tree-ish> | [[-m [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] <tree-ish1> [<tree-ish2> [<tree-ish3>]])
 
 
 DESCRIPTION
@@ -63,6 +63,15 @@ OPTIONS
 * when both sides adds a path identically.  The resolution
   is to add that path.
 
+--prefix=<prefix>/::
+       Keep the current index contents, and read the contents
+       of named tree-ish under directory at `<prefix>`.  The
+       original index file cannot have anything at the path
+       `<prefix>` itself, and have nothing in `<prefix>/`
+       directory.  Note that the `<prefix>/` value must end
+       with a slash.
+
+
 <tree-ish#>::
        The id of the tree object(s) to be read/merged.
 

diff --git a/Documentation/git-write-tree.txt b/Documentation/git-write-tree.txt
index 77e12cb..c85fa89 100644 (file)
--- a/Documentation/git-write-tree.txt
+++ b/Documentation/git-write-tree.txt
@@ -8,7 +8,7 @@ git-write-tree - Creates a tree object from the current index
 
 SYNOPSIS
 --------
-'git-write-tree' [--missing-ok]
+'git-write-tree' [--missing-ok] [--prefix=<prefix>/]
 
 DESCRIPTION
 -----------
@@ -30,6 +30,12 @@ OPTIONS
        directory exist in the object database.  This option disables this
        check.
 
+--prefix=<prefix>/::
+       Writes a tree object that represents a subdirectory
+       `<prefix>`.  This can be used to write the tree object
+       for a subproject that is in the named subdirectory.
+
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>

diff --git a/builtin-init-db.c b/builtin-init-db.c
index 6a24e9b..7fdd2fa 100644 (file)
--- a/builtin-init-db.c
+++ b/builtin-init-db.c
@@ -263,7 +263,9 @@ int cmd_init_db(int argc, const char **argv, char **envp)
                if (!strncmp(arg, "--template=", 11))
                        template_dir = arg+11;
                else if (!strcmp(arg, "--shared"))
-                       shared_repository = 1;
+                       shared_repository = PERM_GROUP;
+               else if (!strncmp(arg, "--shared=", 9))
+                       shared_repository = git_config_perm("arg", arg+9);
                else
                        die(init_db_usage);
        }
@@ -301,8 +303,15 @@ int cmd_init_db(int argc, const char **argv, char **envp)
        strcpy(path+len, "/info");
        safe_create_dir(path, 1);
 
-       if (shared_repository)
-               git_config_set("core.sharedrepository", "true");
+       if (shared_repository) {
+               char buf[10];
+               /* We do not spell "group" and such, so that
+                * the configuration can be read by older version
+                * of git.
+                */
+               sprintf(buf, "%d", shared_repository);
+               git_config_set("core.sharedrepository", buf);
+       }
 
        return 0;
 }

diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index bb50fbd..04506da 100644 (file)
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -24,6 +24,7 @@ static int trivial_merges_only = 0;
 static int aggressive = 0;
 static int verbose_update = 0;
 static volatile int progress_update = 0;
+static const char *prefix = NULL;
 
 static int head_idx = -1;
 static int merge_size = 0;
@@ -412,7 +413,8 @@ static int unpack_trees(merge_fn_t fn)
                        posns[i] = create_tree_entry_list((struct tree *) posn->item);
                        posn = posn->next;
                }
-               if (unpack_trees_rec(posns, len, "", fn, &indpos))
+               if (unpack_trees_rec(posns, len, prefix ? prefix : "",
+                                    fn, &indpos))
                        return -1;
        }
 
@@ -762,6 +764,28 @@ static int twoway_merge(struct cache_entry **src)
 }
 
 /*
+ * Bind merge.
+ *
+ * Keep the index entries at stage0, collapse stage1 but make sure
+ * stage0 does not have anything there.
+ */
+static int bind_merge(struct cache_entry **src)
+{
+       struct cache_entry *old = src[0];
+       struct cache_entry *a = src[1];
+
+       if (merge_size != 1)
+               return error("Cannot do a bind merge of %d trees\n",
+                            merge_size);
+       if (a && old)
+               die("Entry '%s' overlaps.  Cannot bind.", a->name);
+       if (!a)
+               return keep_entry(old);
+       else
+               return merged_entry(a, NULL);
+}
+
+/*
  * One-way merge.
  *
  * The rule is:
@@ -851,7 +875,7 @@ static void prime_cache_tree(void)
 
 }
 
-static const char read_tree_usage[] = "git-read-tree (<sha> | -m [--aggressive] [-u | -i] <sha1> [<sha2> [<sha3>]])";
+static const char read_tree_usage[] = "git-read-tree (<sha> | [[-m [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] <sha1> [<sha2> [<sha3>]])";
 
 static struct lock_file lock_file;
 
@@ -896,12 +920,27 @@ int cmd_read_tree(int argc, const char **argv, char **envp)
                        continue;
                }
 
+               /* "--prefix=<subdirectory>/" means keep the current index
+                *  entries and put the entries from the tree under the
+                * given subdirectory.
+                */
+               if (!strncmp(arg, "--prefix=", 9)) {
+                       if (stage || merge || prefix)
+                               usage(read_tree_usage);
+                       prefix = arg + 9;
+                       merge = 1;
+                       stage = 1;
+                       if (read_cache_unmerged())
+                               die("you need to resolve your current index first");
+                       continue;
+               }
+
                /* This differs from "-m" in that we'll silently ignore
                 * unmerged entries and overwrite working tree files that
                 * correspond to them.
                 */
                if (!strcmp(arg, "--reset")) {
-                       if (stage || merge)
+                       if (stage || merge || prefix)
                                usage(read_tree_usage);
                        reset = 1;
                        merge = 1;
@@ -922,7 +961,7 @@ int cmd_read_tree(int argc, const char **argv, char **envp)
 
                /* "-m" stands for "merge", meaning we start in stage 1 */
                if (!strcmp(arg, "-m")) {
-                       if (stage || merge)
+                       if (stage || merge || prefix)
                                usage(read_tree_usage);
                        if (read_cache_unmerged())
                                die("you need to resolve your current index first");
@@ -944,12 +983,31 @@ int cmd_read_tree(int argc, const char **argv, char **envp)
        if ((update||index_only) && !merge)
                usage(read_tree_usage);
 
+       if (prefix) {
+               int pfxlen = strlen(prefix);
+               int pos;
+               if (prefix[pfxlen-1] != '/')
+                       die("prefix must end with /");
+               if (stage != 2)
+                       die("binding merge takes only one tree");
+               pos = cache_name_pos(prefix, pfxlen);
+               if (0 <= pos)
+                       die("corrupt index file");
+               pos = -pos-1;
+               if (pos < active_nr &&
+                   !strncmp(active_cache[pos]->name, prefix, pfxlen))
+                       die("subdirectory '%s' already exists.", prefix);
+               pos = cache_name_pos(prefix, pfxlen-1);
+               if (0 <= pos)
+                       die("file '%.*s' already exists.", pfxlen-1, prefix);
+       }
+
        if (merge) {
                if (stage < 2)
                        die("just how do you expect me to merge %d trees?", stage-1);
                switch (stage - 1) {
                case 1:
-                       fn = oneway_merge;
+                       fn = prefix ? bind_merge : oneway_merge;
                        break;
                case 2:
                        fn = twoway_merge;
@@ -975,7 +1033,7 @@ int cmd_read_tree(int argc, const char **argv, char **envp)
         * valid cache-tree because the index must match exactly
         * what came from the tree.
         */
-       if (trees && trees->item && (!merge || (stage == 2))) {
+       if (trees && trees->item && !prefix && (!merge || (stage == 2))) {
                cache_tree_free(&active_cache_tree);
                prime_cache_tree();
        }

diff --git a/cache-tree.c b/cache-tree.c
index a880c97..d9f7e1e 100644 (file)
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -529,3 +529,29 @@ struct cache_tree *cache_tree_read(const char *buffer, unsigned long size)
                return NULL; /* not the whole tree */
        return read_one(&buffer, &size);
 }
+
+struct cache_tree *cache_tree_find(struct cache_tree *it, const char *path)
+{
+       while (*path) {
+               const char *slash;
+               struct cache_tree_sub *sub;
+
+               slash = strchr(path, '/');
+               if (!slash)
+                       slash = path + strlen(path);
+               /* between path and slash is the name of the
+                * subtree to look for.
+                */
+               sub = find_subtree(it, path, slash - path, 0);
+               if (!sub)
+                       return NULL;
+               it = sub->cache_tree;
+               if (slash)
+                       while (*slash && *slash == '/')
+                               slash++;
+               if (!slash || !*slash)
+                       return it; /* prefix ended with slashes */
+               path = slash;
+       }
+       return it;
+}

diff --git a/cache-tree.h b/cache-tree.h
index 72c6480..119407e 100644 (file)
--- a/cache-tree.h
+++ b/cache-tree.h
@@ -28,4 +28,6 @@ struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
 int cache_tree_fully_valid(struct cache_tree *);
 int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int, int);
 
+struct cache_tree *cache_tree_find(struct cache_tree *, const char *);
+
 #endif

diff --git a/cache.h b/cache.h
index 14fe5c8..faad6a3 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -208,6 +208,12 @@ extern const unsigned char null_sha1[20];
 
 int git_mkstemp(char *path, size_t n, const char *template);
 
+enum sharedrepo {
+       PERM_UMASK = 0,
+       PERM_GROUP,
+       PERM_EVERYBODY
+};
+int git_config_perm(const char *var, const char *value);
 int adjust_shared_perm(const char *path);
 int safe_create_leading_directories(char *path);
 char *safe_strncpy(char *, const char *, size_t);

diff --git a/date.c b/date.c
index 365dc3b..66be23a 100644 (file)
--- a/date.c
+++ b/date.c
@@ -369,7 +369,7 @@ static int match_digit(const char *date, struct tm *tm, int *offset, int *tm_gmt
 
        /* Four-digit year or a timezone? */
        if (n == 4) {
-               if (num <= 1200 && *offset == -1) {
+               if (num <= 1400 && *offset == -1) {
                        unsigned int minutes = num % 100;
                        unsigned int hours = num / 100;
                        *offset = hours*60 + minutes;

diff --git a/environment.c b/environment.c
index 2e79eab..3de8eb3 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -18,7 +18,7 @@ int log_all_ref_updates = 0;
 int warn_ambiguous_refs = 1;
 int repository_format_version = 0;
 char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
-int shared_repository = 0;
+int shared_repository = PERM_UMASK;
 const char *apply_default_whitespace = NULL;
 
 static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,

diff --git a/fetch-pack.c b/fetch-pack.c
index 8daa93d..8371348 100644 (file)
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -18,6 +18,12 @@ static const char *exec = "git-upload-pack";
 #define SEEN           (1U << 3)
 #define POPPED         (1U << 4)
 
+/*
+ * After sending this many "have"s if we do not get any new ACK , we
+ * give up traversing our history.
+ */
+#define MAX_IN_VAIN 256
+
 static struct commit_list *rev_list = NULL;
 static int non_common_revs = 0, multi_ack = 0, use_thin_pack = 0;
 
@@ -134,6 +140,8 @@ static int find_common(int fd[2], unsigned char *result_sha1,
        int fetching;
        int count = 0, flushes = 0, retval;
        const unsigned char *sha1;
+       unsigned in_vain = 0;
+       int got_continue = 0;
 
        for_each_ref(rev_list_insert_ref);
 
@@ -172,6 +180,7 @@ static int find_common(int fd[2], unsigned char *result_sha1,
                packet_write(fd[1], "have %s\n", sha1_to_hex(sha1));
                if (verbose)
                        fprintf(stderr, "have %s\n", sha1_to_hex(sha1));
+               in_vain++;
                if (!(31 & ++count)) {
                        int ack;
 
@@ -200,9 +209,16 @@ static int find_common(int fd[2], unsigned char *result_sha1,
                                                lookup_commit(result_sha1);
                                        mark_common(commit, 0, 1);
                                        retval = 0;
+                                       in_vain = 0;
+                                       got_continue = 1;
                                }
                        } while (ack);
                        flushes--;
+                       if (got_continue && MAX_IN_VAIN < in_vain) {
+                               if (verbose)
+                                       fprintf(stderr, "giving up\n");
+                               break; /* give up */
+                       }
                }
        }
 done:

diff --git a/path.c b/path.c
index 5168b5f..5d82503 100644 (file)
--- a/path.c
+++ b/path.c
@@ -262,11 +262,21 @@ int adjust_shared_perm(const char *path)
                return -1;
        mode = st.st_mode;
        if (mode & S_IRUSR)
-               mode |= S_IRGRP;
+               mode |= (shared_repository == PERM_GROUP
+                        ? S_IRGRP
+                        : (shared_repository == PERM_EVERYBODY
+                           ? (S_IRGRP|S_IROTH)
+                           : 0));
+
        if (mode & S_IWUSR)
                mode |= S_IWGRP;
+
        if (mode & S_IXUSR)
-               mode |= S_IXGRP;
+               mode |= (shared_repository == PERM_GROUP
+                        ? S_IXGRP
+                        : (shared_repository == PERM_EVERYBODY
+                           ? (S_IXGRP|S_IXOTH)
+                           : 0));
        if (S_ISDIR(mode))
                mode |= S_ISGID;
        if (chmod(path, mode) < 0)

diff --git a/setup.c b/setup.c
index fe7f884..4612f11 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -219,12 +219,27 @@ const char *setup_git_directory_gently(int *nongit_ok)
        return cwd + offset;
 }
 
+int git_config_perm(const char *var, const char *value)
+{
+       if (value) {
+               if (!strcmp(value, "umask"))
+                       return PERM_UMASK;
+               if (!strcmp(value, "group"))
+                       return PERM_GROUP;
+               if (!strcmp(value, "all") ||
+                   !strcmp(value, "world") ||
+                   !strcmp(value, "everybody"))
+                       return PERM_EVERYBODY;
+       }
+       return git_config_bool(var, value);
+}
+
 int check_repository_format_version(const char *var, const char *value)
 {
        if (strcmp(var, "core.repositoryformatversion") == 0)
                repository_format_version = git_config_int(var, value);
        else if (strcmp(var, "core.sharedrepository") == 0)
-               shared_repository = git_config_bool(var, value);
+               shared_repository = git_config_perm(var, value);
        return 0;
 }
 

diff --git a/t/t0000-basic.sh b/t/t0000-basic.sh
index cf33989..2c9bbb5 100755 (executable)
--- a/t/t0000-basic.sh
+++ b/t/t0000-basic.sh
@@ -195,6 +195,20 @@ test_expect_success \
     'git-ls-tree -r output for a known tree.' \
     'diff current expected'
 
+test_expect_success \
+    'writing partial tree out with git-write-tree --prefix.' \
+    'ptree=$(git-write-tree --prefix=path3)'
+test_expect_success \
+    'validate object ID for a known tree.' \
+    'test "$ptree" = 21ae8269cacbe57ae09138dcc3a2887f904d02b3'
+
+test_expect_success \
+    'writing partial tree out with git-write-tree --prefix.' \
+    'ptree=$(git-write-tree --prefix=path3/subp3)'
+test_expect_success \
+    'validate object ID for a known tree.' \
+    'test "$ptree" = 3c5e5399f3a333eddecce7a9b9465b63f65f51e2'
+
 ################################################################
 rm .git/index
 test_expect_success \

diff --git a/write-tree.c b/write-tree.c
index d6a6058..bd07da6 100644 (file)
--- a/write-tree.c
+++ b/write-tree.c
@@ -8,8 +8,10 @@
 #include "cache-tree.h"
 
 static int missing_ok = 0;
+static char *prefix = NULL;
 
-static const char write_tree_usage[] = "git-write-tree [--missing-ok]";
+static const char write_tree_usage[] =
+"git-write-tree [--missing-ok] [--prefix=<prefix>/]";
 
 static struct lock_file lock_file;
 
@@ -21,13 +23,18 @@ int main(int argc, char **argv)
 
        newfd = hold_lock_file_for_update(&lock_file, get_index_file());
        entries = read_cache();
-       if (argc == 2) {
-               if (!strcmp(argv[1], "--missing-ok"))
+
+       while (1 < argc) {
+               char *arg = argv[1];
+               if (!strcmp(arg, "--missing-ok"))
                        missing_ok = 1;
+               else if (!strncmp(arg, "--prefix=", 9))
+                       prefix = arg + 9;
                else
                        die(write_tree_usage);
+               argc--; argv++;
        }
-       
+
        if (argc > 2)
                die("too many options");
 
@@ -54,6 +61,12 @@ int main(int argc, char **argv)
                 * performance penalty and not a big deal.
                 */
        }
-       printf("%s\n", sha1_to_hex(active_cache_tree->sha1));
+       if (prefix) {
+               struct cache_tree *subtree =
+                       cache_tree_find(active_cache_tree, prefix);
+               printf("%s\n", sha1_to_hex(subtree->sha1));
+       }
+       else
+               printf("%s\n", sha1_to_hex(active_cache_tree->sha1));
        return 0;
 }