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-rw-r--r--Documentation/git-read-tree.txt5
-rw-r--r--builtin-read-tree.c170
-rw-r--r--unpack-trees.h24
3 files changed, 90 insertions, 109 deletions
diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 7160fa1536..4a932b08c6 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -8,7 +8,10 @@ git-read-tree - Reads tree information into the index
SYNOPSIS
--------
-'git read-tree' (<tree-ish> | [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] [--exclude-per-directory=<gitignore>] [--index-output=<file>] <tree-ish1> [<tree-ish2> [<tree-ish3>]])
+'git read-tree' [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>]
+ [-u [--exclude-per-directory=<gitignore>] | -i]]
+ [--index-output=<file>]
+ <tree-ish1> [<tree-ish2> [<tree-ish3>]]
DESCRIPTION
diff --git a/builtin-read-tree.c b/builtin-read-tree.c
index 17c96310ab..9c2d634d6d 100644
--- a/builtin-read-tree.c
+++ b/builtin-read-tree.c
@@ -12,6 +12,7 @@
#include "unpack-trees.h"
#include "dir.h"
#include "builtin.h"
+#include "parse-options.h"
static int nr_trees;
static struct tree *trees[MAX_UNPACK_TREES];
@@ -29,7 +30,39 @@ static int list_tree(unsigned char *sha1)
return 0;
}
-static const char read_tree_usage[] = "git read-tree (<sha> | [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u | -i]] [--exclude-per-directory=<gitignore>] [--index-output=<file>] <sha1> [<sha2> [<sha3>]])";
+static const char * const read_tree_usage[] = {
+ "git read-tree [[-m [--trivial] [--aggressive] | --reset | --prefix=<prefix>] [-u [--exclude-per-directory=<gitignore>] | -i]] [--index-output=<file>] <tree-ish1> [<tree-ish2> [<tree-ish3>]]",
+ NULL
+};
+
+static int index_output_cb(const struct option *opt, const char *arg,
+ int unset)
+{
+ set_alternate_index_output(arg);
+ return 0;
+}
+
+static int exclude_per_directory_cb(const struct option *opt, const char *arg,
+ int unset)
+{
+ struct dir_struct *dir;
+ struct unpack_trees_options *opts;
+
+ opts = (struct unpack_trees_options *)opt->value;
+
+ if (opts->dir)
+ die("more than one --exclude-per-directory given.");
+
+ dir = xcalloc(1, sizeof(*opts->dir));
+ dir->flags |= DIR_SHOW_IGNORED;
+ dir->exclude_per_dir = arg;
+ opts->dir = dir;
+ /* We do not need to nor want to do read-directory
+ * here; we are merely interested in reusing the
+ * per directory ignore stack mechanism.
+ */
+ return 0;
+}
static struct lock_file lock_file;
@@ -39,6 +72,34 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
unsigned char sha1[20];
struct tree_desc t[MAX_UNPACK_TREES];
struct unpack_trees_options opts;
+ int prefix_set = 0;
+ const struct option read_tree_options[] = {
+ { OPTION_CALLBACK, 0, "index-output", NULL, "FILE",
+ "write resulting index to <FILE>",
+ PARSE_OPT_NONEG, index_output_cb },
+ OPT__VERBOSE(&opts.verbose_update),
+ OPT_GROUP("Merging"),
+ OPT_SET_INT('m', NULL, &opts.merge,
+ "perform a merge in addition to a read", 1),
+ OPT_SET_INT(0, "trivial", &opts.trivial_merges_only,
+ "3-way merge if no file level merging required", 1),
+ OPT_SET_INT(0, "aggressive", &opts.aggressive,
+ "3-way merge in presence of adds and removes", 1),
+ OPT_SET_INT(0, "reset", &opts.reset,
+ "same as -m, but discard unmerged entries", 1),
+ { OPTION_STRING, 0, "prefix", &opts.prefix, "<subdirectory>/",
+ "read the tree into the index under <subdirectory>/",
+ PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP },
+ OPT_SET_INT('u', NULL, &opts.update,
+ "update working tree with merge result", 1),
+ { OPTION_CALLBACK, 0, "exclude-per-directory", &opts,
+ "gitignore",
+ "allow explicitly ignored files to be overwritten",
+ PARSE_OPT_NONEG, exclude_per_directory_cb },
+ OPT_SET_INT('i', NULL, &opts.index_only,
+ "don't check the working tree after merging", 1),
+ OPT_END()
+ };
memset(&opts, 0, sizeof(opts));
opts.head_idx = -1;
@@ -49,104 +110,19 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
newfd = hold_locked_index(&lock_file, 1);
- for (i = 1; i < argc; i++) {
- const char *arg = argv[i];
-
- /* "-u" means "update", meaning that a merge will update
- * the working tree.
- */
- if (!strcmp(arg, "-u")) {
- opts.update = 1;
- continue;
- }
-
- if (!strcmp(arg, "-v")) {
- opts.verbose_update = 1;
- continue;
- }
-
- /* "-i" means "index only", meaning that a merge will
- * not even look at the working tree.
- */
- if (!strcmp(arg, "-i")) {
- opts.index_only = 1;
- continue;
- }
-
- if (!prefixcmp(arg, "--index-output=")) {
- set_alternate_index_output(arg + 15);
- continue;
- }
-
- /* "--prefix=<subdirectory>/" means keep the current index
- * entries and put the entries from the tree under the
- * given subdirectory.
- */
- if (!prefixcmp(arg, "--prefix=")) {
- if (stage || opts.merge || opts.prefix)
- usage(read_tree_usage);
- opts.prefix = arg + 9;
- opts.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 || opts.merge || opts.prefix)
- usage(read_tree_usage);
- opts.reset = 1;
- opts.merge = 1;
- stage = 1;
- read_cache_unmerged();
- continue;
- }
-
- if (!strcmp(arg, "--trivial")) {
- opts.trivial_merges_only = 1;
- continue;
- }
-
- if (!strcmp(arg, "--aggressive")) {
- opts.aggressive = 1;
- continue;
- }
+ argc = parse_options(argc, argv, unused_prefix, read_tree_options,
+ read_tree_usage, 0);
- /* "-m" stands for "merge", meaning we start in stage 1 */
- if (!strcmp(arg, "-m")) {
- if (stage || opts.merge || opts.prefix)
- usage(read_tree_usage);
- if (read_cache_unmerged())
- die("you need to resolve your current index first");
- stage = 1;
- opts.merge = 1;
- continue;
- }
+ if (read_cache_unmerged() && (opts.prefix || opts.merge))
+ die("You need to resolve your current index first");
- if (!prefixcmp(arg, "--exclude-per-directory=")) {
- struct dir_struct *dir;
-
- if (opts.dir)
- die("more than one --exclude-per-directory are given.");
-
- dir = xcalloc(1, sizeof(*opts.dir));
- dir->flags |= DIR_SHOW_IGNORED;
- dir->exclude_per_dir = arg + 24;
- opts.dir = dir;
- /* We do not need to nor want to do read-directory
- * here; we are merely interested in reusing the
- * per directory ignore stack mechanism.
- */
- continue;
- }
+ prefix_set = opts.prefix ? 1 : 0;
+ if (1 < opts.merge + opts.reset + prefix_set)
+ die("Which one? -m, --reset, or --prefix?");
+ stage = opts.merge = (opts.reset || opts.merge || prefix_set);
- if (1 < opts.index_only + opts.update)
- die("-u and -i at the same time makes no sense");
+ for (i = 0; i < argc; i++) {
+ const char *arg = argv[i];
if (get_sha1(arg, sha1))
die("Not a valid object name %s", arg);
@@ -154,6 +130,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
die("failed to unpack tree object %s", arg);
stage++;
}
+ if (1 < opts.index_only + opts.update)
+ die("-u and -i at the same time makes no sense");
if ((opts.update||opts.index_only) && !opts.merge)
die("%s is meaningless without -m, --reset, or --prefix",
opts.update ? "-u" : "-i");
diff --git a/unpack-trees.h b/unpack-trees.h
index 1e0e2325f1..d19df44f40 100644
--- a/unpack-trees.h
+++ b/unpack-trees.h
@@ -17,18 +17,18 @@ struct unpack_trees_error_msgs {
};
struct unpack_trees_options {
- unsigned int reset:1,
- merge:1,
- update:1,
- index_only:1,
- nontrivial_merge:1,
- trivial_merges_only:1,
- verbose_update:1,
- aggressive:1,
- skip_unmerged:1,
- initial_checkout:1,
- diff_index_cached:1,
- gently:1;
+ unsigned int reset,
+ merge,
+ update,
+ index_only,
+ nontrivial_merge,
+ trivial_merges_only,
+ verbose_update,
+ aggressive,
+ skip_unmerged,
+ initial_checkout,
+ diff_index_cached,
+ gently;
const char *prefix;
int pos;
struct dir_struct *dir;
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