Builtin git-diff-files, git-diff-index, git-diff-stages, and git-diff-tree.

Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/Makefile b/Makefile
index 69377e37b4f82569f9c8116e4143251cf9c220e8..fc5f98b908d1485315c82341f697a4ef8af9dad5 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -151,9 +151,7 @@ SIMPLE_PROGRAMS = \
 PROGRAMS = \
        git-cat-file$X \
        git-checkout-index$X git-clone-pack$X \
-       git-convert-objects$X git-diff-files$X \
-       git-diff-index$X git-diff-stages$X \
-       git-diff-tree$X git-fetch-pack$X git-fsck-objects$X \
+       git-convert-objects$X git-fetch-pack$X git-fsck-objects$X \
        git-hash-object$X git-index-pack$X git-local-fetch$X \
        git-mailinfo$X git-merge-base$X \
        git-merge-index$X git-mktag$X git-mktree$X git-pack-objects$X git-patch-id$X \
@@ -173,7 +171,8 @@ BUILT_INS = git-log$X git-whatchanged$X git-show$X \
        git-grep$X git-rev-list$X git-check-ref-format$X \
        git-init-db$X git-ls-files$X git-ls-tree$X \
        git-tar-tree$X git-read-tree$X git-commit-tree$X \
-       git-apply$X git-show-branch$X
+       git-apply$X git-show-branch$X git-diff-files$X \
+       git-diff-index$X git-diff-stages$X git-diff-tree$X
 
 # what 'all' will build and 'install' will install, in gitexecdir
 ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@@ -223,8 +222,9 @@ BUILTIN_OBJS = \
        builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o \
        builtin-grep.o builtin-rev-list.o builtin-check-ref-format.o \
        builtin-init-db.o builtin-ls-files.o builtin-ls-tree.o \
-        builtin-tar-tree.o builtin-read-tree.o builtin-commit-tree.o \
-       builtin-apply.o builtin-show-branch.o
+       builtin-tar-tree.o builtin-read-tree.o builtin-commit-tree.o \
+       builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
+       builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o
 
 GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
 LIBS = $(GITLIBS) -lz

diff --git a/builtin-diff-files.c b/builtin-diff-files.c
new file mode 100644 (file)
index 0000000..cebda82
--- /dev/null
+++ b/builtin-diff-files.c
@@ -0,0 +1,55 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "revision.h"
+#include "builtin.h"
+
+static const char diff_files_usage[] =
+"git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
+COMMON_DIFF_OPTIONS_HELP;
+
+int cmd_diff_files(int argc, const char **argv, char **envp)
+{
+       struct rev_info rev;
+       int silent = 0;
+
+       git_config(git_diff_config);
+       init_revisions(&rev);
+       rev.abbrev = 0;
+
+       argc = setup_revisions(argc, argv, &rev, NULL);
+       while (1 < argc && argv[1][0] == '-') {
+               if (!strcmp(argv[1], "--base"))
+                       rev.max_count = 1;
+               else if (!strcmp(argv[1], "--ours"))
+                       rev.max_count = 2;
+               else if (!strcmp(argv[1], "--theirs"))
+                       rev.max_count = 3;
+               else if (!strcmp(argv[1], "-q"))
+                       silent = 1;
+               else
+                       usage(diff_files_usage);
+               argv++; argc--;
+       }
+       /*
+        * Make sure there are NO revision (i.e. pending object) parameter,
+        * rev.max_count is reasonable (0 <= n <= 3),
+        * there is no other revision filtering parameters.
+        */
+       if (rev.pending_objects ||
+           rev.min_age != -1 || rev.max_age != -1)
+               usage(diff_files_usage);
+       /*
+        * Backward compatibility wart - "diff-files -s" used to
+        * defeat the common diff option "-s" which asked for
+        * DIFF_FORMAT_NO_OUTPUT.
+        */
+       if (rev.diffopt.output_format == DIFF_FORMAT_NO_OUTPUT)
+               rev.diffopt.output_format = DIFF_FORMAT_RAW;
+       return run_diff_files(&rev, silent);
+}

diff --git a/builtin-diff-index.c b/builtin-diff-index.c
new file mode 100644 (file)
index 0000000..1958580
--- /dev/null
+++ b/builtin-diff-index.c
@@ -0,0 +1,39 @@
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "revision.h"
+#include "builtin.h"
+
+static const char diff_cache_usage[] =
+"git-diff-index [-m] [--cached] "
+"[<common diff options>] <tree-ish> [<path>...]"
+COMMON_DIFF_OPTIONS_HELP;
+
+int cmd_diff_index(int argc, const char **argv, char **envp)
+{
+       struct rev_info rev;
+       int cached = 0;
+       int i;
+
+       git_config(git_diff_config);
+       init_revisions(&rev);
+       rev.abbrev = 0;
+
+       argc = setup_revisions(argc, argv, &rev, NULL);
+       for (i = 1; i < argc; i++) {
+               const char *arg = argv[i];
+                       
+               if (!strcmp(arg, "--cached"))
+                       cached = 1;
+               else
+                       usage(diff_cache_usage);
+       }
+       /*
+        * Make sure there is one revision (i.e. pending object),
+        * and there is no revision filtering parameters.
+        */
+       if (!rev.pending_objects || rev.pending_objects->next ||
+           rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
+               usage(diff_cache_usage);
+       return run_diff_index(&rev, cached);
+}

diff --git a/builtin-diff-stages.c b/builtin-diff-stages.c
new file mode 100644 (file)
index 0000000..7c157ca
--- /dev/null
+++ b/builtin-diff-stages.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2005 Junio C Hamano
+ */
+
+#include "cache.h"
+#include "diff.h"
+#include "builtin.h"
+
+static struct diff_options diff_options;
+
+static const char diff_stages_usage[] =
+"git-diff-stages [<common diff options>] <stage1> <stage2> [<path>...]"
+COMMON_DIFF_OPTIONS_HELP;
+
+static void diff_stages(int stage1, int stage2, const char **pathspec)
+{
+       int i = 0;
+       while (i < active_nr) {
+               struct cache_entry *ce, *stages[4] = { NULL, };
+               struct cache_entry *one, *two;
+               const char *name;
+               int len, skip;
+
+               ce = active_cache[i];
+               skip = !ce_path_match(ce, pathspec);
+               len = ce_namelen(ce);
+               name = ce->name;
+               for (;;) {
+                       int stage = ce_stage(ce);
+                       stages[stage] = ce;
+                       if (active_nr <= ++i)
+                               break;
+                       ce = active_cache[i];
+                       if (ce_namelen(ce) != len ||
+                           memcmp(name, ce->name, len))
+                               break;
+               }
+               one = stages[stage1];
+               two = stages[stage2];
+
+               if (skip || (!one && !two))
+                       continue;
+               if (!one)
+                       diff_addremove(&diff_options, '+', ntohl(two->ce_mode),
+                                      two->sha1, name, NULL);
+               else if (!two)
+                       diff_addremove(&diff_options, '-', ntohl(one->ce_mode),
+                                      one->sha1, name, NULL);
+               else if (memcmp(one->sha1, two->sha1, 20) ||
+                        (one->ce_mode != two->ce_mode) ||
+                        diff_options.find_copies_harder)
+                       diff_change(&diff_options,
+                                   ntohl(one->ce_mode), ntohl(two->ce_mode),
+                                   one->sha1, two->sha1, name, NULL);
+       }
+}
+
+int cmd_diff_stages(int ac, const char **av, char **envp)
+{
+       int stage1, stage2;
+       const char *prefix = setup_git_directory();
+       const char **pathspec = NULL;
+
+       git_config(git_diff_config);
+       read_cache();
+       diff_setup(&diff_options);
+       while (1 < ac && av[1][0] == '-') {
+               const char *arg = av[1];
+               if (!strcmp(arg, "-r"))
+                       ; /* as usual */
+               else {
+                       int diff_opt_cnt;
+                       diff_opt_cnt = diff_opt_parse(&diff_options,
+                                                     av+1, ac-1);
+                       if (diff_opt_cnt < 0)
+                               usage(diff_stages_usage);
+                       else if (diff_opt_cnt) {
+                               av += diff_opt_cnt;
+                               ac -= diff_opt_cnt;
+                               continue;
+                       }
+                       else
+                               usage(diff_stages_usage);
+               }
+               ac--; av++;
+       }
+
+       if (ac < 3 ||
+           sscanf(av[1], "%d", &stage1) != 1 ||
+           ! (0 <= stage1 && stage1 <= 3) ||
+           sscanf(av[2], "%d", &stage2) != 1 ||
+           ! (0 <= stage2 && stage2 <= 3))
+               usage(diff_stages_usage);
+
+       av += 3; /* The rest from av[0] are for paths restriction. */
+       pathspec = get_pathspec(prefix, av);
+
+       if (diff_setup_done(&diff_options) < 0)
+               usage(diff_stages_usage);
+
+       diff_stages(stage1, stage2, pathspec);
+       diffcore_std(&diff_options);
+       diff_flush(&diff_options);
+       return 0;
+}

diff --git a/builtin-diff-tree.c b/builtin-diff-tree.c
new file mode 100644 (file)
index 0000000..cc53b81
--- /dev/null
+++ b/builtin-diff-tree.c
@@ -0,0 +1,148 @@
+#include "cache.h"
+#include "diff.h"
+#include "commit.h"
+#include "log-tree.h"
+#include "builtin.h"
+
+static struct rev_info log_tree_opt;
+
+static int diff_tree_commit_sha1(const unsigned char *sha1)
+{
+       struct commit *commit = lookup_commit_reference(sha1);
+       if (!commit)
+               return -1;
+       return log_tree_commit(&log_tree_opt, commit);
+}
+
+static int diff_tree_stdin(char *line)
+{
+       int len = strlen(line);
+       unsigned char sha1[20];
+       struct commit *commit;
+
+       if (!len || line[len-1] != '\n')
+               return -1;
+       line[len-1] = 0;
+       if (get_sha1_hex(line, sha1))
+               return -1;
+       commit = lookup_commit(sha1);
+       if (!commit || parse_commit(commit))
+               return -1;
+       if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
+               /* Graft the fake parents locally to the commit */
+               int pos = 41;
+               struct commit_list **pptr, *parents;
+
+               /* Free the real parent list */
+               for (parents = commit->parents; parents; ) {
+                       struct commit_list *tmp = parents->next;
+                       free(parents);
+                       parents = tmp;
+               }
+               commit->parents = NULL;
+               pptr = &(commit->parents);
+               while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
+                       struct commit *parent = lookup_commit(sha1);
+                       if (parent) {
+                               pptr = &commit_list_insert(parent, pptr)->next;
+                       }
+                       pos += 41;
+               }
+       }
+       return log_tree_commit(&log_tree_opt, commit);
+}
+
+static const char diff_tree_usage[] =
+"git-diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
+"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
+"  -r            diff recursively\n"
+"  --root        include the initial commit as diff against /dev/null\n"
+COMMON_DIFF_OPTIONS_HELP;
+
+int cmd_diff_tree(int argc, const char **argv, char **envp)
+{
+       int nr_sha1;
+       char line[1000];
+       struct object *tree1, *tree2;
+       static struct rev_info *opt = &log_tree_opt;
+       struct object_list *list;
+       int read_stdin = 0;
+
+       git_config(git_diff_config);
+       nr_sha1 = 0;
+       init_revisions(opt);
+       opt->abbrev = 0;
+       opt->diff = 1;
+       argc = setup_revisions(argc, argv, opt, NULL);
+
+       while (--argc > 0) {
+               const char *arg = *++argv;
+
+               if (!strcmp(arg, "--stdin")) {
+                       read_stdin = 1;
+                       continue;
+               }
+               usage(diff_tree_usage);
+       }
+
+       /*
+        * NOTE! "setup_revisions()" will have inserted the revisions
+        * it parsed in reverse order. So if you do
+        *
+        *      git-diff-tree a b
+        *
+        * the commit list will be "b" -> "a" -> NULL, so we reverse
+        * the order of the objects if the first one is not marked
+        * UNINTERESTING.
+        */
+       nr_sha1 = 0;
+       list = opt->pending_objects;
+       if (list) {
+               nr_sha1++;
+               tree1 = list->item;
+               list = list->next;
+               if (list) {
+                       nr_sha1++;
+                       tree2 = tree1;
+                       tree1 = list->item;
+                       if (list->next)
+                               usage(diff_tree_usage);
+                       /* Switch them around if the second one was uninteresting.. */
+                       if (tree2->flags & UNINTERESTING) {
+                               struct object *tmp = tree2;
+                               tree2 = tree1;
+                               tree1 = tmp;
+                       }
+               }
+       }
+
+       switch (nr_sha1) {
+       case 0:
+               if (!read_stdin)
+                       usage(diff_tree_usage);
+               break;
+       case 1:
+               diff_tree_commit_sha1(tree1->sha1);
+               break;
+       case 2:
+               diff_tree_sha1(tree1->sha1,
+                              tree2->sha1,
+                              "", &opt->diffopt);
+               log_tree_diff_flush(opt);
+               break;
+       }
+
+       if (!read_stdin)
+               return 0;
+
+       if (opt->diffopt.detect_rename)
+               opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
+                                      DIFF_SETUP_USE_CACHE);
+       while (fgets(line, sizeof(line), stdin))
+               if (line[0] == '\n')
+                       fflush(stdout);
+               else
+                       diff_tree_stdin(line);
+
+       return 0;
+}

diff --git a/builtin.h b/builtin.h
index 01882ec93dfba0bbbb8e726858c0f4235380559d..7620984624abee4be236a38b31cfb7af966519f9 100644 (file)
--- a/builtin.h
+++ b/builtin.h
@@ -34,5 +34,10 @@ extern int cmd_read_tree(int argc, const char **argv, char **envp);
 extern int cmd_commit_tree(int argc, const char **argv, char **envp);
 extern int cmd_apply(int argc, const char **argv, char **envp);
 extern int cmd_show_branch(int argc, const char **argv, char **envp);
+extern int cmd_diff_files(int argc, const char **argv, char **envp);
+extern int cmd_diff_index(int argc, const char **argv, char **envp);
+extern int cmd_diff_stages(int argc, const char **argv, char **envp);
+extern int cmd_diff_tree(int argc, const char **argv, char **envp);
+
 
 #endif

diff --git a/diff-files.c b/diff-files.c
deleted file mode 100644 (file)
index b9d193d..0000000
--- a/diff-files.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * GIT - The information manager from hell
- *
- * Copyright (C) Linus Torvalds, 2005
- */
-#include "cache.h"
-#include "diff.h"
-#include "commit.h"
-#include "revision.h"
-
-static const char diff_files_usage[] =
-"git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
-COMMON_DIFF_OPTIONS_HELP;
-
-int main(int argc, const char **argv)
-{
-       struct rev_info rev;
-       int silent = 0;
-
-       git_config(git_diff_config);
-       init_revisions(&rev);
-       rev.abbrev = 0;
-
-       argc = setup_revisions(argc, argv, &rev, NULL);
-       while (1 < argc && argv[1][0] == '-') {
-               if (!strcmp(argv[1], "--base"))
-                       rev.max_count = 1;
-               else if (!strcmp(argv[1], "--ours"))
-                       rev.max_count = 2;
-               else if (!strcmp(argv[1], "--theirs"))
-                       rev.max_count = 3;
-               else if (!strcmp(argv[1], "-q"))
-                       silent = 1;
-               else
-                       usage(diff_files_usage);
-               argv++; argc--;
-       }
-       /*
-        * Make sure there are NO revision (i.e. pending object) parameter,
-        * rev.max_count is reasonable (0 <= n <= 3),
-        * there is no other revision filtering parameters.
-        */
-       if (rev.pending_objects ||
-           rev.min_age != -1 || rev.max_age != -1)
-               usage(diff_files_usage);
-       /*
-        * Backward compatibility wart - "diff-files -s" used to
-        * defeat the common diff option "-s" which asked for
-        * DIFF_FORMAT_NO_OUTPUT.
-        */
-       if (rev.diffopt.output_format == DIFF_FORMAT_NO_OUTPUT)
-               rev.diffopt.output_format = DIFF_FORMAT_RAW;
-       return run_diff_files(&rev, silent);
-}

diff --git a/diff-index.c b/diff-index.c
deleted file mode 100644 (file)
index 8c9f601..0000000
--- a/diff-index.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#include "cache.h"
-#include "diff.h"
-#include "commit.h"
-#include "revision.h"
-
-static const char diff_cache_usage[] =
-"git-diff-index [-m] [--cached] "
-"[<common diff options>] <tree-ish> [<path>...]"
-COMMON_DIFF_OPTIONS_HELP;
-
-int main(int argc, const char **argv)
-{
-       struct rev_info rev;
-       int cached = 0;
-       int i;
-
-       git_config(git_diff_config);
-       init_revisions(&rev);
-       rev.abbrev = 0;
-
-       argc = setup_revisions(argc, argv, &rev, NULL);
-       for (i = 1; i < argc; i++) {
-               const char *arg = argv[i];
-                       
-               if (!strcmp(arg, "--cached"))
-                       cached = 1;
-               else
-                       usage(diff_cache_usage);
-       }
-       /*
-        * Make sure there is one revision (i.e. pending object),
-        * and there is no revision filtering parameters.
-        */
-       if (!rev.pending_objects || rev.pending_objects->next ||
-           rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
-               usage(diff_cache_usage);
-       return run_diff_index(&rev, cached);
-}

diff --git a/diff-stages.c b/diff-stages.c
deleted file mode 100644 (file)
index dcd20e7..0000000
--- a/diff-stages.c
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (c) 2005 Junio C Hamano
- */
-
-#include "cache.h"
-#include "diff.h"
-
-static struct diff_options diff_options;
-
-static const char diff_stages_usage[] =
-"git-diff-stages [<common diff options>] <stage1> <stage2> [<path>...]"
-COMMON_DIFF_OPTIONS_HELP;
-
-static void diff_stages(int stage1, int stage2, const char **pathspec)
-{
-       int i = 0;
-       while (i < active_nr) {
-               struct cache_entry *ce, *stages[4] = { NULL, };
-               struct cache_entry *one, *two;
-               const char *name;
-               int len, skip;
-
-               ce = active_cache[i];
-               skip = !ce_path_match(ce, pathspec);
-               len = ce_namelen(ce);
-               name = ce->name;
-               for (;;) {
-                       int stage = ce_stage(ce);
-                       stages[stage] = ce;
-                       if (active_nr <= ++i)
-                               break;
-                       ce = active_cache[i];
-                       if (ce_namelen(ce) != len ||
-                           memcmp(name, ce->name, len))
-                               break;
-               }
-               one = stages[stage1];
-               two = stages[stage2];
-
-               if (skip || (!one && !two))
-                       continue;
-               if (!one)
-                       diff_addremove(&diff_options, '+', ntohl(two->ce_mode),
-                                      two->sha1, name, NULL);
-               else if (!two)
-                       diff_addremove(&diff_options, '-', ntohl(one->ce_mode),
-                                      one->sha1, name, NULL);
-               else if (memcmp(one->sha1, two->sha1, 20) ||
-                        (one->ce_mode != two->ce_mode) ||
-                        diff_options.find_copies_harder)
-                       diff_change(&diff_options,
-                                   ntohl(one->ce_mode), ntohl(two->ce_mode),
-                                   one->sha1, two->sha1, name, NULL);
-       }
-}
-
-int main(int ac, const char **av)
-{
-       int stage1, stage2;
-       const char *prefix = setup_git_directory();
-       const char **pathspec = NULL;
-
-       git_config(git_diff_config);
-       read_cache();
-       diff_setup(&diff_options);
-       while (1 < ac && av[1][0] == '-') {
-               const char *arg = av[1];
-               if (!strcmp(arg, "-r"))
-                       ; /* as usual */
-               else {
-                       int diff_opt_cnt;
-                       diff_opt_cnt = diff_opt_parse(&diff_options,
-                                                     av+1, ac-1);
-                       if (diff_opt_cnt < 0)
-                               usage(diff_stages_usage);
-                       else if (diff_opt_cnt) {
-                               av += diff_opt_cnt;
-                               ac -= diff_opt_cnt;
-                               continue;
-                       }
-                       else
-                               usage(diff_stages_usage);
-               }
-               ac--; av++;
-       }
-
-       if (ac < 3 ||
-           sscanf(av[1], "%d", &stage1) != 1 ||
-           ! (0 <= stage1 && stage1 <= 3) ||
-           sscanf(av[2], "%d", &stage2) != 1 ||
-           ! (0 <= stage2 && stage2 <= 3))
-               usage(diff_stages_usage);
-
-       av += 3; /* The rest from av[0] are for paths restriction. */
-       pathspec = get_pathspec(prefix, av);
-
-       if (diff_setup_done(&diff_options) < 0)
-               usage(diff_stages_usage);
-
-       diff_stages(stage1, stage2, pathspec);
-       diffcore_std(&diff_options);
-       diff_flush(&diff_options);
-       return 0;
-}

diff --git a/diff-tree.c b/diff-tree.c
deleted file mode 100644 (file)
index 69bb74b..0000000
--- a/diff-tree.c
+++ /dev/null
@@ -1,147 +0,0 @@
-#include "cache.h"
-#include "diff.h"
-#include "commit.h"
-#include "log-tree.h"
-
-static struct rev_info log_tree_opt;
-
-static int diff_tree_commit_sha1(const unsigned char *sha1)
-{
-       struct commit *commit = lookup_commit_reference(sha1);
-       if (!commit)
-               return -1;
-       return log_tree_commit(&log_tree_opt, commit);
-}
-
-static int diff_tree_stdin(char *line)
-{
-       int len = strlen(line);
-       unsigned char sha1[20];
-       struct commit *commit;
-
-       if (!len || line[len-1] != '\n')
-               return -1;
-       line[len-1] = 0;
-       if (get_sha1_hex(line, sha1))
-               return -1;
-       commit = lookup_commit(sha1);
-       if (!commit || parse_commit(commit))
-               return -1;
-       if (isspace(line[40]) && !get_sha1_hex(line+41, sha1)) {
-               /* Graft the fake parents locally to the commit */
-               int pos = 41;
-               struct commit_list **pptr, *parents;
-
-               /* Free the real parent list */
-               for (parents = commit->parents; parents; ) {
-                       struct commit_list *tmp = parents->next;
-                       free(parents);
-                       parents = tmp;
-               }
-               commit->parents = NULL;
-               pptr = &(commit->parents);
-               while (line[pos] && !get_sha1_hex(line + pos, sha1)) {
-                       struct commit *parent = lookup_commit(sha1);
-                       if (parent) {
-                               pptr = &commit_list_insert(parent, pptr)->next;
-                       }
-                       pos += 41;
-               }
-       }
-       return log_tree_commit(&log_tree_opt, commit);
-}
-
-static const char diff_tree_usage[] =
-"git-diff-tree [--stdin] [-m] [-c] [--cc] [-s] [-v] [--pretty] [-t] [-r] [--root] "
-"[<common diff options>] <tree-ish> [<tree-ish>] [<path>...]\n"
-"  -r            diff recursively\n"
-"  --root        include the initial commit as diff against /dev/null\n"
-COMMON_DIFF_OPTIONS_HELP;
-
-int main(int argc, const char **argv)
-{
-       int nr_sha1;
-       char line[1000];
-       struct object *tree1, *tree2;
-       static struct rev_info *opt = &log_tree_opt;
-       struct object_list *list;
-       int read_stdin = 0;
-
-       git_config(git_diff_config);
-       nr_sha1 = 0;
-       init_revisions(opt);
-       opt->abbrev = 0;
-       opt->diff = 1;
-       argc = setup_revisions(argc, argv, opt, NULL);
-
-       while (--argc > 0) {
-               const char *arg = *++argv;
-
-               if (!strcmp(arg, "--stdin")) {
-                       read_stdin = 1;
-                       continue;
-               }
-               usage(diff_tree_usage);
-       }
-
-       /*
-        * NOTE! "setup_revisions()" will have inserted the revisions
-        * it parsed in reverse order. So if you do
-        *
-        *      git-diff-tree a b
-        *
-        * the commit list will be "b" -> "a" -> NULL, so we reverse
-        * the order of the objects if the first one is not marked
-        * UNINTERESTING.
-        */
-       nr_sha1 = 0;
-       list = opt->pending_objects;
-       if (list) {
-               nr_sha1++;
-               tree1 = list->item;
-               list = list->next;
-               if (list) {
-                       nr_sha1++;
-                       tree2 = tree1;
-                       tree1 = list->item;
-                       if (list->next)
-                               usage(diff_tree_usage);
-                       /* Switch them around if the second one was uninteresting.. */
-                       if (tree2->flags & UNINTERESTING) {
-                               struct object *tmp = tree2;
-                               tree2 = tree1;
-                               tree1 = tmp;
-                       }
-               }
-       }
-
-       switch (nr_sha1) {
-       case 0:
-               if (!read_stdin)
-                       usage(diff_tree_usage);
-               break;
-       case 1:
-               diff_tree_commit_sha1(tree1->sha1);
-               break;
-       case 2:
-               diff_tree_sha1(tree1->sha1,
-                              tree2->sha1,
-                              "", &opt->diffopt);
-               log_tree_diff_flush(opt);
-               break;
-       }
-
-       if (!read_stdin)
-               return 0;
-
-       if (opt->diffopt.detect_rename)
-               opt->diffopt.setup |= (DIFF_SETUP_USE_SIZE_CACHE |
-                                      DIFF_SETUP_USE_CACHE);
-       while (fgets(line, sizeof(line), stdin))
-               if (line[0] == '\n')
-                       fflush(stdout);
-               else
-                       diff_tree_stdin(line);
-
-       return 0;
-}

diff --git a/git.c b/git.c
index d29505c4c92f56f1d9829e53d56b8ed7b915d587..874974874bf4fe2202587ff396816f5ae5f59247 100644 (file)
--- a/git.c
+++ b/git.c
@@ -59,7 +59,11 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "read-tree", cmd_read_tree },
                { "commit-tree", cmd_commit_tree },
                { "apply", cmd_apply },
-               { "show-branch", cmd_show_branch }
+               { "show-branch", cmd_show_branch },
+               { "diff-files", cmd_diff_files },
+               { "diff-index", cmd_diff_index },
+               { "diff-stages", cmd_diff_stages },
+               { "diff-tree", cmd_diff_tree }
        };
        int i;