# Define V=1 to have a more verbose compile.
#
+# Define FREAD_READS_DIRECTORIES if your are on a system which succeeds
+# when attempting to read from an fopen'ed directory.
+#
# Define NO_OPENSSL environment variable if you do not have OpenSSL.
# This also implies MOZILLA_SHA1.
#
#
# Define NO_MKDTEMP if you don't have mkdtemp in the C library.
#
+# Define NO_SYS_SELECT_H if you don't have sys/select.h.
+#
# Define NO_SYMLINK_HEAD if you never want .git/HEAD to be a symbolic link.
# Enable it on Windows. By default, symrefs are still used.
#
# Define THREADED_DELTA_SEARCH if you have pthreads and wish to exploit
# parallel delta searching when packing objects.
#
+# Define INTERNAL_QSORT to use Git's implementation of qsort(), which
+# is a simplified version of the merge sort used in glibc. This is
+# recommended if Git triggers O(n^2) behavior in your platform's qsort().
+#
GIT-VERSION-FILE: .FORCE-GIT-VERSION-FILE
@$(SHELL_PATH) ./GIT-VERSION-GEN
BASIC_LDFLAGS =
SCRIPT_SH = \
- git-bisect.sh git-checkout.sh \
+ git-bisect.sh \
git-clone.sh \
git-merge-one-file.sh git-mergetool.sh git-parse-remote.sh \
git-pull.sh git-rebase.sh git-rebase--interactive.sh \
git-lost-found.sh git-quiltimport.sh git-submodule.sh \
git-filter-branch.sh \
git-stash.sh \
- git-help--browse.sh
+ git-web--browse.sh
SCRIPT_PERL = \
git-add--interactive.perl \
git-upload-pack$X \
git-pack-redundant$X git-var$X \
git-merge-tree$X git-imap-send$X \
- git-merge-recursive$X \
$(EXTRA_PROGRAMS)
# Empty...
EXTRA_PROGRAMS =
+ # List built-in command $C whose implementation cmd_$C() is not in
+ # builtin-$C.o but is linked in as part of some other command.
BUILT_INS = \
git-format-patch$X git-show$X git-whatchanged$X git-cherry$X \
git-get-tar-commit-id$X git-init$X git-repo-config$X \
git-fsck-objects$X git-cherry-pick$X git-peek-remote$X git-status$X \
+ git-merge-subtree$X \
$(patsubst builtin-%.o,git-%$X,$(BUILTIN_OBJS))
# what 'all' will build and 'install' will install, in gitexecdir
ALL_PROGRAMS = $(PROGRAMS) $(SCRIPTS)
- ALL_PROGRAMS += git-merge-subtree$X
-
# what 'all' will build but not install in gitexecdir
OTHER_PROGRAMS = git$X gitweb/gitweb.cgi
alloc.o merge-file.o path-list.o help.o unpack-trees.o $(DIFF_OBJS) \
color.o wt-status.o archive-zip.o archive-tar.o shallow.o utf8.o \
convert.o attr.o decorate.o progress.o mailmap.o symlinks.o remote.o \
- transport.o bundle.o walker.o parse-options.o ws.o archive.o \
- transport.o bundle.o walker.o parse-options.o ws.o archive.o branch.o
++ transport.o bundle.o walker.o parse-options.o ws.o archive.o branch.o \
+ alias.o
BUILTIN_OBJS = \
builtin-add.o \
builtin-bundle.o \
builtin-cat-file.o \
builtin-check-attr.o \
+ builtin-checkout.o \
builtin-checkout-index.o \
builtin-check-ref-format.o \
builtin-clean.o \
builtin-merge-base.o \
builtin-merge-file.o \
builtin-merge-ours.o \
+ builtin-merge-recursive.o \
builtin-mv.o \
builtin-name-rev.o \
builtin-pack-objects.o \
# for now, build 32-bit version
BASIC_LDFLAGS += -L/usr/lib32
endif
+ifeq ($(uname_S),HP-UX)
+ NO_IPV6=YesPlease
+ NO_SETENV=YesPlease
+ NO_STRCASESTR=YesPlease
+ NO_MEMMEM = YesPlease
+ NO_STRLCPY = YesPlease
+ NO_MKDTEMP = YesPlease
+ NO_UNSETENV = YesPlease
+ NO_HSTRERROR = YesPlease
+ NO_SYS_SELECT_H = YesPlease
+endif
ifneq (,$(findstring arm,$(uname_M)))
ARM_SHA1 = YesPlease
endif
ifdef NO_C99_FORMAT
BASIC_CFLAGS += -DNO_C99_FORMAT
endif
+ifdef FREAD_READS_DIRECTORIES
+ COMPAT_CFLAGS += -DFREAD_READS_DIRECTORIES
+ COMPAT_OBJS += compat/fopen.o
+endif
ifdef NO_SYMLINK_HEAD
BASIC_CFLAGS += -DNO_SYMLINK_HEAD
endif
COMPAT_CFLAGS += -DNO_UNSETENV
COMPAT_OBJS += compat/unsetenv.o
endif
+ifdef NO_SYS_SELECT_H
+ BASIC_CFLAGS += -DNO_SYS_SELECT_H
+endif
ifdef NO_MMAP
COMPAT_CFLAGS += -DNO_MMAP
COMPAT_OBJS += compat/mmap.o
COMPAT_CFLAGS += -DNO_MEMMEM
COMPAT_OBJS += compat/memmem.o
endif
+ifdef INTERNAL_QSORT
+ COMPAT_CFLAGS += -DINTERNAL_QSORT
+ COMPAT_OBJS += compat/qsort.o
+endif
ifdef THREADED_DELTA_SEARCH
BASIC_CFLAGS += -DTHREADED_DELTA_SEARCH
EXTLIBS += -lpthread
+ LIB_OBJS += thread-utils.o
endif
ifeq ($(TCLTK_PATH),)
help.o: help.c common-cmds.h GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) \
+ '-DGIT_HTML_PATH="$(htmldir_SQ)"' \
'-DGIT_MAN_PATH="$(mandir_SQ)"' \
'-DGIT_INFO_PATH="$(infodir_SQ)"' $<
- git-merge-subtree$X: git-merge-recursive$X
- $(QUIET_BUILT_IN)$(RM) $@ && ln git-merge-recursive$X $@
-
$(BUILT_INS): git$X
$(QUIET_BUILT_IN)$(RM) $@ && ln git$X $@
-e 's|@@PERL@@|$(PERL_PATH_SQ)|g' \
-e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
-e 's/@@NO_CURL@@/$(NO_CURL)/g' \
- -e 's|@@HTMLDIR@@|$(htmldir_SQ)|g' \
$@.sh >$@+ && \
chmod +x $@+ && \
mv $@+ $@
git-imap-send$X: imap-send.o $(LIB_FILE)
-http.o http-walker.o http-push.o: http.h
+http.o http-walker.o http-push.o transport.o: http.h
git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
mv $@+ $@
GIT_TARNAME=git-$(GIT_VERSION)
-dist: git.spec git-archive configure
+dist: git.spec git-archive$(X) configure
./git-archive --format=tar \
--prefix=$(GIT_TARNAME)/ HEAD^{tree} > $(GIT_TARNAME).tar
@mkdir -p $(GIT_TARNAME)
#include "builtin.h"
#include "remote.h"
#include "parse-options.h"
+ #include "branch.h"
static const char * const builtin_branch_usage[] = {
"git-branch [options] [-r | -a]",
static int branch_track = 1;
-static int branch_use_color;
+static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
"\033[m", /* reset */
"", /* PLAIN (normal) */
}
if (!prefixcmp(var, "color.branch.")) {
int slot = parse_branch_color_slot(var, 13);
+ if (!value)
+ return config_error_nonbool(var);
color_parse(value, var, branch_colors[slot]);
return 0;
}
- if (!strcmp(var, "branch.autosetupmerge"))
- branch_track = git_config_bool(var, value);
-
- return git_default_config(var, value);
+ if (!strcmp(var, "branch.autosetupmerge")) {
+ branch_track = git_config_bool(var, value);
+ return 0;
+ }
+ return git_color_default_config(var, value);
}
static const char *branch_get_color(enum color_branch ix)
{
- if (branch_use_color)
+ if (branch_use_color > 0)
return branch_colors[ix];
return "";
}
free_ref_list(&ref_list);
}
- struct tracking {
- struct refspec spec;
- char *src;
- const char *remote;
- int matches;
- };
-
- static int find_tracked_branch(struct remote *remote, void *priv)
- {
- struct tracking *tracking = priv;
-
- if (!remote_find_tracking(remote, &tracking->spec)) {
- if (++tracking->matches == 1) {
- tracking->src = tracking->spec.src;
- tracking->remote = remote->name;
- } else {
- free(tracking->spec.src);
- if (tracking->src) {
- free(tracking->src);
- tracking->src = NULL;
- }
- }
- tracking->spec.src = NULL;
- }
-
- return 0;
- }
-
-
- /*
- * This is called when new_ref is branched off of orig_ref, and tries
- * to infer the settings for branch.<new_ref>.{remote,merge} from the
- * config.
- */
- static int setup_tracking(const char *new_ref, const char *orig_ref)
- {
- char key[1024];
- struct tracking tracking;
-
- if (strlen(new_ref) > 1024 - 7 - 7 - 1)
- return error("Tracking not set up: name too long: %s",
- new_ref);
-
- memset(&tracking, 0, sizeof(tracking));
- tracking.spec.dst = (char *)orig_ref;
- if (for_each_remote(find_tracked_branch, &tracking) ||
- !tracking.matches)
- return 1;
-
- if (tracking.matches > 1)
- return error("Not tracking: ambiguous information for ref %s",
- orig_ref);
-
- if (tracking.matches == 1) {
- sprintf(key, "branch.%s.remote", new_ref);
- git_config_set(key, tracking.remote ? tracking.remote : ".");
- sprintf(key, "branch.%s.merge", new_ref);
- git_config_set(key, tracking.src);
- free(tracking.src);
- printf("Branch %s set up to track remote branch %s.\n",
- new_ref, orig_ref);
- }
-
- return 0;
- }
-
- static void create_branch(const char *name, const char *start_name,
- int force, int reflog, int track)
- {
- struct ref_lock *lock;
- struct commit *commit;
- unsigned char sha1[20];
- char *real_ref, ref[PATH_MAX], msg[PATH_MAX + 20];
- int forcing = 0;
-
- snprintf(ref, sizeof ref, "refs/heads/%s", name);
- if (check_ref_format(ref))
- die("'%s' is not a valid branch name.", name);
-
- if (resolve_ref(ref, sha1, 1, NULL)) {
- if (!force)
- die("A branch named '%s' already exists.", name);
- else if (!is_bare_repository() && !strcmp(head, name))
- die("Cannot force update the current branch.");
- forcing = 1;
- }
-
- real_ref = NULL;
- if (get_sha1(start_name, sha1))
- die("Not a valid object name: '%s'.", start_name);
-
- switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
- case 0:
- /* Not branching from any existing branch */
- real_ref = NULL;
- break;
- case 1:
- /* Unique completion -- good */
- break;
- default:
- die("Ambiguous object name: '%s'.", start_name);
- break;
- }
-
- if ((commit = lookup_commit_reference(sha1)) == NULL)
- die("Not a valid branch point: '%s'.", start_name);
- hashcpy(sha1, commit->object.sha1);
-
- lock = lock_any_ref_for_update(ref, NULL, 0);
- if (!lock)
- die("Failed to lock ref for update: %s.", strerror(errno));
-
- if (reflog)
- log_all_ref_updates = 1;
-
- if (forcing)
- snprintf(msg, sizeof msg, "branch: Reset from %s",
- start_name);
- else
- snprintf(msg, sizeof msg, "branch: Created from %s",
- start_name);
-
- /* When branching off a remote branch, set up so that git-pull
- automatically merges from there. So far, this is only done for
- remotes registered via .git/config. */
- if (real_ref && track)
- setup_tracking(name, real_ref);
-
- if (write_ref_sha1(lock, sha1, msg) < 0)
- die("Failed to write ref: %s.", strerror(errno));
-
- if (real_ref)
- free(real_ref);
- }
-
static void rename_branch(const char *oldname, const char *newname, int force)
{
char oldref[PATH_MAX], newref[PATH_MAX], logmsg[PATH_MAX*2 + 100];
};
git_config(git_branch_config);
+
+ if (branch_use_color == -1)
+ branch_use_color = git_use_color_default;
+
track = branch_track;
argc = parse_options(argc, argv, options, builtin_branch_usage, 0);
if (!!delete + !!rename + !!force_create > 1)
else if (rename && (argc == 2))
rename_branch(argv[0], argv[1], rename > 1);
else if (argc <= 2)
- create_branch(argv[0], (argc == 2) ? argv[1] : head,
+ create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
force_create, reflog, track);
else
usage_with_options(builtin_branch_usage, options);
#include "cache.h"
#include "cache-tree.h"
+#include "color.h"
#include "dir.h"
#include "builtin.h"
#include "diff.h"
}
}
-static void commit_index_files(void)
+static int commit_index_files(void)
{
+ int err = 0;
+
switch (commit_style) {
case COMMIT_AS_IS:
break; /* nothing to do */
case COMMIT_NORMAL:
- commit_lock_file(&index_lock);
+ err = commit_lock_file(&index_lock);
break;
case COMMIT_PARTIAL:
- commit_lock_file(&index_lock);
+ err = commit_lock_file(&index_lock);
rollback_lock_file(&false_lock);
break;
}
+
+ return err;
}
/*
die("failed to unpack HEAD tree object");
parse_tree(tree);
init_tree_desc(&t, tree->buffer, tree->size);
- unpack_trees(1, &t, &opts);
+ if (unpack_trees(1, &t, &opts))
+ exit(128); /* We've already reported the error, finish dying */
}
static char *prepare_index(int argc, const char **argv, const char *prefix)
if (write_cache(fd, active_cache, active_nr) ||
close_lock_file(&false_lock))
die("unable to write temporary index file");
+
+ discard_cache();
+ read_cache_from(false_lock.filename);
+
return false_lock.filename;
}
return s.commitable;
}
+static int run_hook(const char *index_file, const char *name, ...)
+{
+ struct child_process hook;
+ const char *argv[10], *env[2];
+ char index[PATH_MAX];
+ va_list args;
+ int i;
+
+ va_start(args, name);
+ argv[0] = git_path("hooks/%s", name);
+ i = 0;
+ do {
+ if (++i >= ARRAY_SIZE(argv))
+ die ("run_hook(): too many arguments");
+ argv[i] = va_arg(args, const char *);
+ } while (argv[i]);
+ va_end(args);
+
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ env[0] = index;
+ env[1] = NULL;
+
+ if (access(argv[0], X_OK) < 0)
+ return 0;
+
+ memset(&hook, 0, sizeof(hook));
+ hook.argv = argv;
+ hook.no_stdin = 1;
+ hook.stdout_to_stderr = 1;
+ hook.env = env;
+
+ return run_command(&hook);
+}
+
+static int is_a_merge(const unsigned char *sha1)
+{
+ struct commit *commit = lookup_commit(sha1);
+ if (!commit || parse_commit(commit))
+ die("could not parse HEAD commit");
+ return !!(commit->parents && commit->parents->next);
+}
+
static const char sign_off_header[] = "Signed-off-by: ";
-static int prepare_log_message(const char *index_file, const char *prefix)
+static int prepare_to_commit(const char *index_file, const char *prefix)
{
struct stat statbuf;
int commitable, saved_color_setting;
struct strbuf sb;
char *buffer;
FILE *fp;
+ const char *hook_arg1 = NULL;
+ const char *hook_arg2 = NULL;
+
+ if (!no_verify && run_hook(index_file, "pre-commit", NULL))
+ return 0;
strbuf_init(&sb, 0);
if (message.len) {
strbuf_addbuf(&sb, &message);
+ hook_arg1 = "message";
} else if (logfile && !strcmp(logfile, "-")) {
if (isatty(0))
fprintf(stderr, "(reading log message from standard input)\n");
if (strbuf_read(&sb, 0, 0) < 0)
die("could not read log from standard input");
+ hook_arg1 = "message";
} else if (logfile) {
if (strbuf_read_file(&sb, logfile, 0) < 0)
die("could not read log file '%s': %s",
logfile, strerror(errno));
+ hook_arg1 = "message";
} else if (use_message) {
buffer = strstr(use_message_buffer, "\n\n");
if (!buffer || buffer[2] == '\0')
die("commit has empty message");
strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
+ hook_arg1 = "commit";
+ hook_arg2 = use_message;
} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
die("could not read MERGE_MSG: %s", strerror(errno));
+ hook_arg1 = "merge";
} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
die("could not read SQUASH_MSG: %s", strerror(errno));
+ hook_arg1 = "squash";
} else if (template_file && !stat(template_file, &statbuf)) {
if (strbuf_read_file(&sb, template_file, 0) < 0)
die("could not read %s: %s",
template_file, strerror(errno));
+ hook_arg1 = "template";
}
+ /*
+ * This final case does not modify the template message,
+ * it just sets the argument to the prepare-commit-msg hook.
+ */
+ else if (in_merge)
+ hook_arg1 = "merge";
+
fp = fopen(git_path(commit_editmsg), "w");
if (fp == NULL)
die("could not open %s", git_path(commit_editmsg));
strbuf_release(&sb);
- if (!use_editor) {
+ if (use_editor) {
+ if (in_merge)
+ fprintf(fp,
+ "#\n"
+ "# It looks like you may be committing a MERGE.\n"
+ "# If this is not correct, please remove the file\n"
+ "# %s\n"
+ "# and try again.\n"
+ "#\n",
+ git_path("MERGE_HEAD"));
+
+ fprintf(fp,
+ "\n"
+ "# Please enter the commit message for your changes.\n"
+ "# (Comment lines starting with '#' will ");
+ if (cleanup_mode == CLEANUP_ALL)
+ fprintf(fp, "not be included)\n");
+ else /* CLEANUP_SPACE, that is. */
+ fprintf(fp, "be kept.\n"
+ "# You can remove them yourself if you want to)\n");
+ if (only_include_assumed)
+ fprintf(fp, "# %s\n", only_include_assumed);
+
+ saved_color_setting = wt_status_use_color;
+ wt_status_use_color = 0;
+ commitable = run_status(fp, index_file, prefix, 1);
+ wt_status_use_color = saved_color_setting;
+ } else {
struct rev_info rev;
unsigned char sha1[20];
const char *parent = "HEAD";
- fclose(fp);
-
if (!active_nr && read_cache() < 0)
die("Cannot read index");
parent = "HEAD^1";
if (get_sha1(parent, sha1))
- return !!active_nr;
+ commitable = !!active_nr;
+ else {
+ init_revisions(&rev, "");
+ rev.abbrev = 0;
+ setup_revisions(0, NULL, &rev, parent);
+ DIFF_OPT_SET(&rev.diffopt, QUIET);
+ DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
+ run_diff_index(&rev, 1 /* cached */);
+
+ commitable = !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
+ }
+ }
- init_revisions(&rev, "");
- rev.abbrev = 0;
- setup_revisions(0, NULL, &rev, parent);
- DIFF_OPT_SET(&rev.diffopt, QUIET);
- DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
- run_diff_index(&rev, 1 /* cached */);
+ fclose(fp);
- return !!DIFF_OPT_TST(&rev.diffopt, HAS_CHANGES);
+ if (!commitable && !in_merge && !allow_empty &&
+ !(amend && is_a_merge(head_sha1))) {
+ run_status(stdout, index_file, prefix, 0);
+ unlink(commit_editmsg);
+ return 0;
}
- if (in_merge)
- fprintf(fp,
- "#\n"
- "# It looks like you may be committing a MERGE.\n"
- "# If this is not correct, please remove the file\n"
- "# %s\n"
- "# and try again.\n"
- "#\n",
- git_path("MERGE_HEAD"));
-
- fprintf(fp,
- "\n"
- "# Please enter the commit message for your changes.\n"
- "# (Comment lines starting with '#' will ");
- if (cleanup_mode == CLEANUP_ALL)
- fprintf(fp, "not be included)\n");
- else /* CLEANUP_SPACE, that is. */
- fprintf(fp, "be kept.\n"
- "# You can remove them yourself if you want to)\n");
- if (only_include_assumed)
- fprintf(fp, "# %s\n", only_include_assumed);
-
- saved_color_setting = wt_status_use_color;
- wt_status_use_color = 0;
- commitable = run_status(fp, index_file, prefix, 1);
- wt_status_use_color = saved_color_setting;
+ /*
+ * Re-read the index as pre-commit hook could have updated it,
+ * and write it out as a tree. We must do this before we invoke
+ * the editor and after we invoke run_status above.
+ */
+ discard_cache();
+ read_cache_from(index_file);
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+ if (cache_tree_update(active_cache_tree,
+ active_cache, active_nr, 0, 0) < 0) {
+ error("Error building trees");
+ return 0;
+ }
- fclose(fp);
+ if (run_hook(index_file, "prepare-commit-msg",
+ git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
+ return 0;
- return commitable;
+ if (use_editor) {
+ char index[PATH_MAX];
+ const char *env[2] = { index, NULL };
+ snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
+ launch_editor(git_path(commit_editmsg), NULL, env);
+ }
+
+ if (!no_verify &&
+ run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
+ return 0;
+ }
+
+ return 1;
}
/*
use_editor = 0;
if (edit_flag)
use_editor = 1;
+ if (!use_editor)
+ setenv("GIT_EDITOR", ":", 1);
if (get_sha1("HEAD", head_sha1))
initial_commit = 1;
if (get_sha1(use_message, sha1))
die("could not lookup commit %s", use_message);
- commit = lookup_commit(sha1);
+ commit = lookup_commit_reference(sha1);
if (!commit || parse_commit(commit))
die("could not parse commit %s", use_message);
git_config(git_status_config);
+ if (wt_status_use_color == -1)
+ wt_status_use_color = git_use_color_default;
+
argc = parse_and_validate_options(argc, argv, builtin_status_usage);
index_file = prepare_index(argc, argv, prefix);
return commitable ? 0 : 1;
}
-static int run_hook(const char *index_file, const char *name, const char *arg)
-{
- struct child_process hook;
- const char *argv[3], *env[2];
- char index[PATH_MAX];
-
- argv[0] = git_path("hooks/%s", name);
- argv[1] = arg;
- argv[2] = NULL;
- snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
- env[0] = index;
- env[1] = NULL;
-
- if (access(argv[0], X_OK) < 0)
- return 0;
-
- memset(&hook, 0, sizeof(hook));
- hook.argv = argv;
- hook.no_stdin = 1;
- hook.stdout_to_stderr = 1;
- hook.env = env;
-
- return run_command(&hook);
-}
-
static void print_summary(const char *prefix, const unsigned char *sha1)
{
struct rev_info rev;
int git_commit_config(const char *k, const char *v)
{
if (!strcmp(k, "commit.template")) {
+ if (!v)
+ return config_error_nonbool(v);
template_file = xstrdup(v);
return 0;
}
return git_status_config(k, v);
}
-static int is_a_merge(const unsigned char *sha1)
-{
- struct commit *commit = lookup_commit(sha1);
- if (!commit || parse_commit(commit))
- die("could not parse HEAD commit");
- return !!(commit->parents && commit->parents->next);
-}
-
static const char commit_utf8_warn[] =
"Warning: commit message does not conform to UTF-8.\n"
"You may want to amend it after fixing the message, or set the config\n"
index_file = prepare_index(argc, argv, prefix);
- if (!no_verify && run_hook(index_file, "pre-commit", NULL)) {
+ /* Set up everything for writing the commit object. This includes
+ running hooks, writing the trees, and interacting with the user. */
+ if (!prepare_to_commit(index_file, prefix)) {
rollback_index_files();
return 1;
}
- if (!prepare_log_message(index_file, prefix) && !in_merge &&
- !allow_empty && !(amend && is_a_merge(head_sha1))) {
- run_status(stdout, index_file, prefix, 0);
- rollback_index_files();
- unlink(commit_editmsg);
- return 1;
- }
-
- /*
- * Re-read the index as pre-commit hook could have updated it,
- * and write it out as a tree.
- */
- discard_cache();
- read_cache_from(index_file);
- if (!active_cache_tree)
- active_cache_tree = cache_tree();
- if (cache_tree_update(active_cache_tree,
- active_cache, active_nr, 0, 0) < 0) {
- rollback_index_files();
- die("Error building trees");
- }
-
/*
* The commit object
*/
strbuf_addf(&sb, "encoding %s\n", git_commit_encoding);
strbuf_addch(&sb, '\n');
- /* Get the commit message and validate it */
+ /* Finally, get the commit message */
header_len = sb.len;
- if (use_editor) {
- char index[PATH_MAX];
- const char *env[2] = { index, NULL };
- snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
- launch_editor(git_path(commit_editmsg), NULL, env);
- }
- if (!no_verify &&
- run_hook(index_file, "commit-msg", git_path(commit_editmsg))) {
- rollback_index_files();
- exit(1);
- }
if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
rollback_index_files();
die("could not read commit message");
unlink(git_path("MERGE_HEAD"));
unlink(git_path("MERGE_MSG"));
+ unlink(git_path("SQUASH_MSG"));
- commit_index_files();
+ if (commit_index_files())
+ die ("Repository has been updated, but unable to write\n"
+ "new_index file. Check that disk is not full or quota is\n"
+ "not exceeded, and then \"git reset HEAD\" to recover.");
rerere();
run_hook(get_index_file(), "post-commit", NULL);
--- /dev/null
- if (value)
- default_ll_merge = strdup(value);
+ /*
+ * Recursive Merge algorithm stolen from git-merge-recursive.py by
+ * Fredrik Kuivinen.
+ * The thieves were Alex Riesen and Johannes Schindelin, in June/July 2006
+ */
+ #include "cache.h"
+ #include "cache-tree.h"
+ #include "commit.h"
+ #include "blob.h"
+ #include "builtin.h"
+ #include "tree-walk.h"
+ #include "diff.h"
+ #include "diffcore.h"
+ #include "run-command.h"
+ #include "tag.h"
+ #include "unpack-trees.h"
+ #include "path-list.h"
+ #include "xdiff-interface.h"
+ #include "interpolate.h"
+ #include "attr.h"
+ #include "merge-recursive.h"
+
+ static int subtree_merge;
+
+ static struct tree *shift_tree_object(struct tree *one, struct tree *two)
+ {
+ unsigned char shifted[20];
+
+ /*
+ * NEEDSWORK: this limits the recursion depth to hardcoded
+ * value '2' to avoid excessive overhead.
+ */
+ shift_tree(one->object.sha1, two->object.sha1, shifted, 2);
+ if (!hashcmp(two->object.sha1, shifted))
+ return two;
+ return lookup_tree(shifted);
+ }
+
+ /*
+ * A virtual commit has
+ * - (const char *)commit->util set to the name, and
+ * - *(int *)commit->object.sha1 set to the virtual id.
+ */
+
+ static unsigned commit_list_count(const struct commit_list *l)
+ {
+ unsigned c = 0;
+ for (; l; l = l->next )
+ c++;
+ return c;
+ }
+
+ static struct commit *make_virtual_commit(struct tree *tree, const char *comment)
+ {
+ struct commit *commit = xcalloc(1, sizeof(struct commit));
+ static unsigned virtual_id = 1;
+ commit->tree = tree;
+ commit->util = (void*)comment;
+ *(int*)commit->object.sha1 = virtual_id++;
+ /* avoid warnings */
+ commit->object.parsed = 1;
+ return commit;
+ }
+
+ /*
+ * Since we use get_tree_entry(), which does not put the read object into
+ * the object pool, we cannot rely on a == b.
+ */
+ static int sha_eq(const unsigned char *a, const unsigned char *b)
+ {
+ if (!a && !b)
+ return 2;
+ return a && b && hashcmp(a, b) == 0;
+ }
+
+ /*
+ * Since we want to write the index eventually, we cannot reuse the index
+ * for these (temporary) data.
+ */
+ struct stage_data
+ {
+ struct
+ {
+ unsigned mode;
+ unsigned char sha[20];
+ } stages[4];
+ unsigned processed:1;
+ };
+
+ static struct path_list current_file_set = {NULL, 0, 0, 1};
+ static struct path_list current_directory_set = {NULL, 0, 0, 1};
+
+ static int call_depth = 0;
+ static int verbosity = 2;
+ static int rename_limit = -1;
+ static int buffer_output = 1;
+ static struct strbuf obuf = STRBUF_INIT;
+
+ static int show(int v)
+ {
+ return (!call_depth && verbosity >= v) || verbosity >= 5;
+ }
+
+ static void flush_output(void)
+ {
+ if (obuf.len) {
+ fputs(obuf.buf, stdout);
+ strbuf_reset(&obuf);
+ }
+ }
+
+ static void output(int v, const char *fmt, ...)
+ {
+ int len;
+ va_list ap;
+
+ if (!show(v))
+ return;
+
+ strbuf_grow(&obuf, call_depth * 2 + 2);
+ memset(obuf.buf + obuf.len, ' ', call_depth * 2);
+ strbuf_setlen(&obuf, obuf.len + call_depth * 2);
+
+ va_start(ap, fmt);
+ len = vsnprintf(obuf.buf + obuf.len, strbuf_avail(&obuf), fmt, ap);
+ va_end(ap);
+
+ if (len < 0)
+ len = 0;
+ if (len >= strbuf_avail(&obuf)) {
+ strbuf_grow(&obuf, len + 2);
+ va_start(ap, fmt);
+ len = vsnprintf(obuf.buf + obuf.len, strbuf_avail(&obuf), fmt, ap);
+ va_end(ap);
+ if (len >= strbuf_avail(&obuf)) {
+ die("this should not happen, your snprintf is broken");
+ }
+ }
+ strbuf_setlen(&obuf, obuf.len + len);
+ strbuf_add(&obuf, "\n", 1);
+ if (!buffer_output)
+ flush_output();
+ }
+
+ static void output_commit_title(struct commit *commit)
+ {
+ int i;
+ flush_output();
+ for (i = call_depth; i--;)
+ fputs(" ", stdout);
+ if (commit->util)
+ printf("virtual %s\n", (char *)commit->util);
+ else {
+ printf("%s ", find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
+ if (parse_commit(commit) != 0)
+ printf("(bad commit)\n");
+ else {
+ const char *s;
+ int len;
+ for (s = commit->buffer; *s; s++)
+ if (*s == '\n' && s[1] == '\n') {
+ s += 2;
+ break;
+ }
+ for (len = 0; s[len] && '\n' != s[len]; len++)
+ ; /* do nothing */
+ printf("%.*s\n", len, s);
+ }
+ }
+ }
+
+ static int add_cacheinfo(unsigned int mode, const unsigned char *sha1,
+ const char *path, int stage, int refresh, int options)
+ {
+ struct cache_entry *ce;
+ ce = make_cache_entry(mode, sha1 ? sha1 : null_sha1, path, stage, refresh);
+ if (!ce)
+ return error("addinfo_cache failed for path '%s'", path);
+ return add_cache_entry(ce, options);
+ }
+
+ /*
+ * This is a global variable which is used in a number of places but
+ * only written to in the 'merge' function.
+ *
+ * index_only == 1 => Don't leave any non-stage 0 entries in the cache and
+ * don't update the working directory.
+ * 0 => Leave unmerged entries in the cache and update
+ * the working directory.
+ */
+ static int index_only = 0;
+
+ static void init_tree_desc_from_tree(struct tree_desc *desc, struct tree *tree)
+ {
+ parse_tree(tree);
+ init_tree_desc(desc, tree->buffer, tree->size);
+ }
+
+ static int git_merge_trees(int index_only,
+ struct tree *common,
+ struct tree *head,
+ struct tree *merge)
+ {
+ int rc;
+ struct tree_desc t[3];
+ struct unpack_trees_options opts;
+
+ memset(&opts, 0, sizeof(opts));
+ if (index_only)
+ opts.index_only = 1;
+ else
+ opts.update = 1;
+ opts.merge = 1;
+ opts.head_idx = 2;
+ opts.fn = threeway_merge;
+
+ init_tree_desc_from_tree(t+0, common);
+ init_tree_desc_from_tree(t+1, head);
+ init_tree_desc_from_tree(t+2, merge);
+
+ rc = unpack_trees(3, t, &opts);
+ cache_tree_free(&active_cache_tree);
+ return rc;
+ }
+
+ struct tree *write_tree_from_memory(void)
+ {
+ struct tree *result = NULL;
+
+ if (unmerged_cache()) {
+ int i;
+ output(0, "There are unmerged index entries:");
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
+ if (ce_stage(ce))
+ output(0, "%d %.*s", ce_stage(ce), ce_namelen(ce), ce->name);
+ }
+ return NULL;
+ }
+
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+
+ if (!cache_tree_fully_valid(active_cache_tree) &&
+ cache_tree_update(active_cache_tree,
+ active_cache, active_nr, 0, 0) < 0)
+ die("error building trees");
+
+ result = lookup_tree(active_cache_tree->sha1);
+
+ return result;
+ }
+
+ static int save_files_dirs(const unsigned char *sha1,
+ const char *base, int baselen, const char *path,
+ unsigned int mode, int stage)
+ {
+ int len = strlen(path);
+ char *newpath = xmalloc(baselen + len + 1);
+ memcpy(newpath, base, baselen);
+ memcpy(newpath + baselen, path, len);
+ newpath[baselen + len] = '\0';
+
+ if (S_ISDIR(mode))
+ path_list_insert(newpath, ¤t_directory_set);
+ else
+ path_list_insert(newpath, ¤t_file_set);
+ free(newpath);
+
+ return READ_TREE_RECURSIVE;
+ }
+
+ static int get_files_dirs(struct tree *tree)
+ {
+ int n;
+ if (read_tree_recursive(tree, "", 0, 0, NULL, save_files_dirs) != 0)
+ return 0;
+ n = current_file_set.nr + current_directory_set.nr;
+ return n;
+ }
+
+ /*
+ * Returns an index_entry instance which doesn't have to correspond to
+ * a real cache entry in Git's index.
+ */
+ static struct stage_data *insert_stage_data(const char *path,
+ struct tree *o, struct tree *a, struct tree *b,
+ struct path_list *entries)
+ {
+ struct path_list_item *item;
+ struct stage_data *e = xcalloc(1, sizeof(struct stage_data));
+ get_tree_entry(o->object.sha1, path,
+ e->stages[1].sha, &e->stages[1].mode);
+ get_tree_entry(a->object.sha1, path,
+ e->stages[2].sha, &e->stages[2].mode);
+ get_tree_entry(b->object.sha1, path,
+ e->stages[3].sha, &e->stages[3].mode);
+ item = path_list_insert(path, entries);
+ item->util = e;
+ return e;
+ }
+
+ /*
+ * Create a dictionary mapping file names to stage_data objects. The
+ * dictionary contains one entry for every path with a non-zero stage entry.
+ */
+ static struct path_list *get_unmerged(void)
+ {
+ struct path_list *unmerged = xcalloc(1, sizeof(struct path_list));
+ int i;
+
+ unmerged->strdup_paths = 1;
+
+ for (i = 0; i < active_nr; i++) {
+ struct path_list_item *item;
+ struct stage_data *e;
+ struct cache_entry *ce = active_cache[i];
+ if (!ce_stage(ce))
+ continue;
+
+ item = path_list_lookup(ce->name, unmerged);
+ if (!item) {
+ item = path_list_insert(ce->name, unmerged);
+ item->util = xcalloc(1, sizeof(struct stage_data));
+ }
+ e = item->util;
+ e->stages[ce_stage(ce)].mode = ce->ce_mode;
+ hashcpy(e->stages[ce_stage(ce)].sha, ce->sha1);
+ }
+
+ return unmerged;
+ }
+
+ struct rename
+ {
+ struct diff_filepair *pair;
+ struct stage_data *src_entry;
+ struct stage_data *dst_entry;
+ unsigned processed:1;
+ };
+
+ /*
+ * Get information of all renames which occurred between 'o_tree' and
+ * 'tree'. We need the three trees in the merge ('o_tree', 'a_tree' and
+ * 'b_tree') to be able to associate the correct cache entries with
+ * the rename information. 'tree' is always equal to either a_tree or b_tree.
+ */
+ static struct path_list *get_renames(struct tree *tree,
+ struct tree *o_tree,
+ struct tree *a_tree,
+ struct tree *b_tree,
+ struct path_list *entries)
+ {
+ int i;
+ struct path_list *renames;
+ struct diff_options opts;
+
+ renames = xcalloc(1, sizeof(struct path_list));
+ diff_setup(&opts);
+ DIFF_OPT_SET(&opts, RECURSIVE);
+ opts.detect_rename = DIFF_DETECT_RENAME;
+ opts.rename_limit = rename_limit;
+ opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ if (diff_setup_done(&opts) < 0)
+ die("diff setup failed");
+ diff_tree_sha1(o_tree->object.sha1, tree->object.sha1, "", &opts);
+ diffcore_std(&opts);
+ for (i = 0; i < diff_queued_diff.nr; ++i) {
+ struct path_list_item *item;
+ struct rename *re;
+ struct diff_filepair *pair = diff_queued_diff.queue[i];
+ if (pair->status != 'R') {
+ diff_free_filepair(pair);
+ continue;
+ }
+ re = xmalloc(sizeof(*re));
+ re->processed = 0;
+ re->pair = pair;
+ item = path_list_lookup(re->pair->one->path, entries);
+ if (!item)
+ re->src_entry = insert_stage_data(re->pair->one->path,
+ o_tree, a_tree, b_tree, entries);
+ else
+ re->src_entry = item->util;
+
+ item = path_list_lookup(re->pair->two->path, entries);
+ if (!item)
+ re->dst_entry = insert_stage_data(re->pair->two->path,
+ o_tree, a_tree, b_tree, entries);
+ else
+ re->dst_entry = item->util;
+ item = path_list_insert(pair->one->path, renames);
+ item->util = re;
+ }
+ opts.output_format = DIFF_FORMAT_NO_OUTPUT;
+ diff_queued_diff.nr = 0;
+ diff_flush(&opts);
+ return renames;
+ }
+
+ static int update_stages(const char *path, struct diff_filespec *o,
+ struct diff_filespec *a, struct diff_filespec *b,
+ int clear)
+ {
+ int options = ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE;
+ if (clear)
+ if (remove_file_from_cache(path))
+ return -1;
+ if (o)
+ if (add_cacheinfo(o->mode, o->sha1, path, 1, 0, options))
+ return -1;
+ if (a)
+ if (add_cacheinfo(a->mode, a->sha1, path, 2, 0, options))
+ return -1;
+ if (b)
+ if (add_cacheinfo(b->mode, b->sha1, path, 3, 0, options))
+ return -1;
+ return 0;
+ }
+
+ static int remove_path(const char *name)
+ {
+ int ret;
+ char *slash, *dirs;
+
+ ret = unlink(name);
+ if (ret)
+ return ret;
+ dirs = xstrdup(name);
+ while ((slash = strrchr(name, '/'))) {
+ *slash = '\0';
+ if (rmdir(name) != 0)
+ break;
+ }
+ free(dirs);
+ return ret;
+ }
+
+ static int remove_file(int clean, const char *path, int no_wd)
+ {
+ int update_cache = index_only || clean;
+ int update_working_directory = !index_only && !no_wd;
+
+ if (update_cache) {
+ if (remove_file_from_cache(path))
+ return -1;
+ }
+ if (update_working_directory) {
+ unlink(path);
+ if (errno != ENOENT || errno != EISDIR)
+ return -1;
+ remove_path(path);
+ }
+ return 0;
+ }
+
+ static char *unique_path(const char *path, const char *branch)
+ {
+ char *newpath = xmalloc(strlen(path) + 1 + strlen(branch) + 8 + 1);
+ int suffix = 0;
+ struct stat st;
+ char *p = newpath + strlen(path);
+ strcpy(newpath, path);
+ *(p++) = '~';
+ strcpy(p, branch);
+ for (; *p; ++p)
+ if ('/' == *p)
+ *p = '_';
+ while (path_list_has_path(¤t_file_set, newpath) ||
+ path_list_has_path(¤t_directory_set, newpath) ||
+ lstat(newpath, &st) == 0)
+ sprintf(p, "_%d", suffix++);
+
+ path_list_insert(newpath, ¤t_file_set);
+ return newpath;
+ }
+
+ static int mkdir_p(const char *path, unsigned long mode)
+ {
+ /* path points to cache entries, so xstrdup before messing with it */
+ char *buf = xstrdup(path);
+ int result = safe_create_leading_directories(buf);
+ free(buf);
+ return result;
+ }
+
+ static void flush_buffer(int fd, const char *buf, unsigned long size)
+ {
+ while (size > 0) {
+ long ret = write_in_full(fd, buf, size);
+ if (ret < 0) {
+ /* Ignore epipe */
+ if (errno == EPIPE)
+ break;
+ die("merge-recursive: %s", strerror(errno));
+ } else if (!ret) {
+ die("merge-recursive: disk full?");
+ }
+ size -= ret;
+ buf += ret;
+ }
+ }
+
+ static int make_room_for_path(const char *path)
+ {
+ int status;
+ const char *msg = "failed to create path '%s'%s";
+
+ status = mkdir_p(path, 0777);
+ if (status) {
+ if (status == -3) {
+ /* something else exists */
+ error(msg, path, ": perhaps a D/F conflict?");
+ return -1;
+ }
+ die(msg, path, "");
+ }
+
+ /* Successful unlink is good.. */
+ if (!unlink(path))
+ return 0;
+ /* .. and so is no existing file */
+ if (errno == ENOENT)
+ return 0;
+ /* .. but not some other error (who really cares what?) */
+ return error(msg, path, ": perhaps a D/F conflict?");
+ }
+
+ static void update_file_flags(const unsigned char *sha,
+ unsigned mode,
+ const char *path,
+ int update_cache,
+ int update_wd)
+ {
+ if (index_only)
+ update_wd = 0;
+
+ if (update_wd) {
+ enum object_type type;
+ void *buf;
+ unsigned long size;
+
+ if (S_ISGITLINK(mode))
+ die("cannot read object %s '%s': It is a submodule!",
+ sha1_to_hex(sha), path);
+
+ buf = read_sha1_file(sha, &type, &size);
+ if (!buf)
+ die("cannot read object %s '%s'", sha1_to_hex(sha), path);
+ if (type != OBJ_BLOB)
+ die("blob expected for %s '%s'", sha1_to_hex(sha), path);
+
+ if (make_room_for_path(path) < 0) {
+ update_wd = 0;
+ goto update_index;
+ }
+ if (S_ISREG(mode) || (!has_symlinks && S_ISLNK(mode))) {
+ int fd;
+ if (mode & 0100)
+ mode = 0777;
+ else
+ mode = 0666;
+ fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
+ if (fd < 0)
+ die("failed to open %s: %s", path, strerror(errno));
+ flush_buffer(fd, buf, size);
+ close(fd);
+ } else if (S_ISLNK(mode)) {
+ char *lnk = xmemdupz(buf, size);
+ mkdir_p(path, 0777);
+ unlink(path);
+ symlink(lnk, path);
+ free(lnk);
+ } else
+ die("do not know what to do with %06o %s '%s'",
+ mode, sha1_to_hex(sha), path);
+ }
+ update_index:
+ if (update_cache)
+ add_cacheinfo(mode, sha, path, 0, update_wd, ADD_CACHE_OK_TO_ADD);
+ }
+
+ static void update_file(int clean,
+ const unsigned char *sha,
+ unsigned mode,
+ const char *path)
+ {
+ update_file_flags(sha, mode, path, index_only || clean, !index_only);
+ }
+
+ /* Low level file merging, update and removal */
+
+ struct merge_file_info
+ {
+ unsigned char sha[20];
+ unsigned mode;
+ unsigned clean:1,
+ merge:1;
+ };
+
+ static void fill_mm(const unsigned char *sha1, mmfile_t *mm)
+ {
+ unsigned long size;
+ enum object_type type;
+
+ if (!hashcmp(sha1, null_sha1)) {
+ mm->ptr = xstrdup("");
+ mm->size = 0;
+ return;
+ }
+
+ mm->ptr = read_sha1_file(sha1, &type, &size);
+ if (!mm->ptr || type != OBJ_BLOB)
+ die("unable to read blob object %s", sha1_to_hex(sha1));
+ mm->size = size;
+ }
+
+ /*
+ * Customizable low-level merge drivers support.
+ */
+
+ struct ll_merge_driver;
+ typedef int (*ll_merge_fn)(const struct ll_merge_driver *,
+ const char *path,
+ mmfile_t *orig,
+ mmfile_t *src1, const char *name1,
+ mmfile_t *src2, const char *name2,
+ mmbuffer_t *result);
+
+ struct ll_merge_driver {
+ const char *name;
+ const char *description;
+ ll_merge_fn fn;
+ const char *recursive;
+ struct ll_merge_driver *next;
+ char *cmdline;
+ };
+
+ /*
+ * Built-in low-levels
+ */
+ static int ll_binary_merge(const struct ll_merge_driver *drv_unused,
+ const char *path_unused,
+ mmfile_t *orig,
+ mmfile_t *src1, const char *name1,
+ mmfile_t *src2, const char *name2,
+ mmbuffer_t *result)
+ {
+ /*
+ * The tentative merge result is "ours" for the final round,
+ * or common ancestor for an internal merge. Still return
+ * "conflicted merge" status.
+ */
+ mmfile_t *stolen = index_only ? orig : src1;
+
+ result->ptr = stolen->ptr;
+ result->size = stolen->size;
+ stolen->ptr = NULL;
+ return 1;
+ }
+
+ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
+ const char *path_unused,
+ mmfile_t *orig,
+ mmfile_t *src1, const char *name1,
+ mmfile_t *src2, const char *name2,
+ mmbuffer_t *result)
+ {
+ xpparam_t xpp;
+
+ if (buffer_is_binary(orig->ptr, orig->size) ||
+ buffer_is_binary(src1->ptr, src1->size) ||
+ buffer_is_binary(src2->ptr, src2->size)) {
+ warning("Cannot merge binary files: %s vs. %s\n",
+ name1, name2);
+ return ll_binary_merge(drv_unused, path_unused,
+ orig, src1, name1,
+ src2, name2,
+ result);
+ }
+
+ memset(&xpp, 0, sizeof(xpp));
+ return xdl_merge(orig,
+ src1, name1,
+ src2, name2,
+ &xpp, XDL_MERGE_ZEALOUS,
+ result);
+ }
+
+ static int ll_union_merge(const struct ll_merge_driver *drv_unused,
+ const char *path_unused,
+ mmfile_t *orig,
+ mmfile_t *src1, const char *name1,
+ mmfile_t *src2, const char *name2,
+ mmbuffer_t *result)
+ {
+ char *src, *dst;
+ long size;
+ const int marker_size = 7;
+
+ int status = ll_xdl_merge(drv_unused, path_unused,
+ orig, src1, NULL, src2, NULL, result);
+ if (status <= 0)
+ return status;
+ size = result->size;
+ src = dst = result->ptr;
+ while (size) {
+ char ch;
+ if ((marker_size < size) &&
+ (*src == '<' || *src == '=' || *src == '>')) {
+ int i;
+ ch = *src;
+ for (i = 0; i < marker_size; i++)
+ if (src[i] != ch)
+ goto not_a_marker;
+ if (src[marker_size] != '\n')
+ goto not_a_marker;
+ src += marker_size + 1;
+ size -= marker_size + 1;
+ continue;
+ }
+ not_a_marker:
+ do {
+ ch = *src++;
+ *dst++ = ch;
+ size--;
+ } while (ch != '\n' && size);
+ }
+ result->size = dst - result->ptr;
+ return 0;
+ }
+
+ #define LL_BINARY_MERGE 0
+ #define LL_TEXT_MERGE 1
+ #define LL_UNION_MERGE 2
+ static struct ll_merge_driver ll_merge_drv[] = {
+ { "binary", "built-in binary merge", ll_binary_merge },
+ { "text", "built-in 3-way text merge", ll_xdl_merge },
+ { "union", "built-in union merge", ll_union_merge },
+ };
+
+ static void create_temp(mmfile_t *src, char *path)
+ {
+ int fd;
+
+ strcpy(path, ".merge_file_XXXXXX");
+ fd = xmkstemp(path);
+ if (write_in_full(fd, src->ptr, src->size) != src->size)
+ die("unable to write temp-file");
+ close(fd);
+ }
+
+ /*
+ * User defined low-level merge driver support.
+ */
+ static int ll_ext_merge(const struct ll_merge_driver *fn,
+ const char *path,
+ mmfile_t *orig,
+ mmfile_t *src1, const char *name1,
+ mmfile_t *src2, const char *name2,
+ mmbuffer_t *result)
+ {
+ char temp[3][50];
+ char cmdbuf[2048];
+ struct interp table[] = {
+ { "%O" },
+ { "%A" },
+ { "%B" },
+ };
+ struct child_process child;
+ const char *args[20];
+ int status, fd, i;
+ struct stat st;
+
+ if (fn->cmdline == NULL)
+ die("custom merge driver %s lacks command line.", fn->name);
+
+ result->ptr = NULL;
+ result->size = 0;
+ create_temp(orig, temp[0]);
+ create_temp(src1, temp[1]);
+ create_temp(src2, temp[2]);
+
+ interp_set_entry(table, 0, temp[0]);
+ interp_set_entry(table, 1, temp[1]);
+ interp_set_entry(table, 2, temp[2]);
+
+ output(1, "merging %s using %s", path,
+ fn->description ? fn->description : fn->name);
+
+ interpolate(cmdbuf, sizeof(cmdbuf), fn->cmdline, table, 3);
+
+ memset(&child, 0, sizeof(child));
+ child.argv = args;
+ args[0] = "sh";
+ args[1] = "-c";
+ args[2] = cmdbuf;
+ args[3] = NULL;
+
+ status = run_command(&child);
+ if (status < -ERR_RUN_COMMAND_FORK)
+ ; /* failure in run-command */
+ else
+ status = -status;
+ fd = open(temp[1], O_RDONLY);
+ if (fd < 0)
+ goto bad;
+ if (fstat(fd, &st))
+ goto close_bad;
+ result->size = st.st_size;
+ result->ptr = xmalloc(result->size + 1);
+ if (read_in_full(fd, result->ptr, result->size) != result->size) {
+ free(result->ptr);
+ result->ptr = NULL;
+ result->size = 0;
+ }
+ close_bad:
+ close(fd);
+ bad:
+ for (i = 0; i < 3; i++)
+ unlink(temp[i]);
+ return status;
+ }
+
+ /*
+ * merge.default and merge.driver configuration items
+ */
+ static struct ll_merge_driver *ll_user_merge, **ll_user_merge_tail;
+ static const char *default_ll_merge;
+
+ static int read_merge_config(const char *var, const char *value)
+ {
+ struct ll_merge_driver *fn;
+ const char *ep, *name;
+ int namelen;
+
+ if (!strcmp(var, "merge.default")) {
- return error("%s: lacks value", var);
++ if (!value)
++ return config_error_nonbool(var);
++ default_ll_merge = strdup(value);
+ return 0;
+ }
+
+ /*
+ * We are not interested in anything but "merge.<name>.variable";
+ * especially, we do not want to look at variables such as
+ * "merge.summary", "merge.tool", and "merge.verbosity".
+ */
+ if (prefixcmp(var, "merge.") || (ep = strrchr(var, '.')) == var + 5)
+ return 0;
+
+ /*
+ * Find existing one as we might be processing merge.<name>.var2
+ * after seeing merge.<name>.var1.
+ */
+ name = var + 6;
+ namelen = ep - name;
+ for (fn = ll_user_merge; fn; fn = fn->next)
+ if (!strncmp(fn->name, name, namelen) && !fn->name[namelen])
+ break;
+ if (!fn) {
+ fn = xcalloc(1, sizeof(struct ll_merge_driver));
+ fn->name = xmemdupz(name, namelen);
+ fn->fn = ll_ext_merge;
+ *ll_user_merge_tail = fn;
+ ll_user_merge_tail = &(fn->next);
+ }
+
+ ep++;
+
+ if (!strcmp("name", ep)) {
+ if (!value)
- return error("%s: lacks value", var);
++ return config_error_nonbool(var);
+ fn->description = strdup(value);
+ return 0;
+ }
+
+ if (!strcmp("driver", ep)) {
+ if (!value)
- return error("%s: lacks value", var);
++ return config_error_nonbool(var);
+ /*
+ * merge.<name>.driver specifies the command line:
+ *
+ * command-line
+ *
+ * The command-line will be interpolated with the following
+ * tokens and is given to the shell:
+ *
+ * %O - temporary file name for the merge base.
+ * %A - temporary file name for our version.
+ * %B - temporary file name for the other branches' version.
+ *
+ * The external merge driver should write the results in the
+ * file named by %A, and signal that it has done with zero exit
+ * status.
+ */
+ fn->cmdline = strdup(value);
+ return 0;
+ }
+
+ if (!strcmp("recursive", ep)) {
+ if (!value)
++ return config_error_nonbool(var);
+ fn->recursive = strdup(value);
+ return 0;
+ }
+
+ return 0;
+ }
+
+ static void initialize_ll_merge(void)
+ {
+ if (ll_user_merge_tail)
+ return;
+ ll_user_merge_tail = &ll_user_merge;
+ git_config(read_merge_config);
+ }
+
+ static const struct ll_merge_driver *find_ll_merge_driver(const char *merge_attr)
+ {
+ struct ll_merge_driver *fn;
+ const char *name;
+ int i;
+
+ initialize_ll_merge();
+
+ if (ATTR_TRUE(merge_attr))
+ return &ll_merge_drv[LL_TEXT_MERGE];
+ else if (ATTR_FALSE(merge_attr))
+ return &ll_merge_drv[LL_BINARY_MERGE];
+ else if (ATTR_UNSET(merge_attr)) {
+ if (!default_ll_merge)
+ return &ll_merge_drv[LL_TEXT_MERGE];
+ else
+ name = default_ll_merge;
+ }
+ else
+ name = merge_attr;
+
+ for (fn = ll_user_merge; fn; fn = fn->next)
+ if (!strcmp(fn->name, name))
+ return fn;
+
+ for (i = 0; i < ARRAY_SIZE(ll_merge_drv); i++)
+ if (!strcmp(ll_merge_drv[i].name, name))
+ return &ll_merge_drv[i];
+
+ /* default to the 3-way */
+ return &ll_merge_drv[LL_TEXT_MERGE];
+ }
+
+ static const char *git_path_check_merge(const char *path)
+ {
+ static struct git_attr_check attr_merge_check;
+
+ if (!attr_merge_check.attr)
+ attr_merge_check.attr = git_attr("merge", 5);
+
+ if (git_checkattr(path, 1, &attr_merge_check))
+ return NULL;
+ return attr_merge_check.value;
+ }
+
+ static int ll_merge(mmbuffer_t *result_buf,
+ struct diff_filespec *o,
+ struct diff_filespec *a,
+ struct diff_filespec *b,
+ const char *branch1,
+ const char *branch2)
+ {
+ mmfile_t orig, src1, src2;
+ char *name1, *name2;
+ int merge_status;
+ const char *ll_driver_name;
+ const struct ll_merge_driver *driver;
+
+ name1 = xstrdup(mkpath("%s:%s", branch1, a->path));
+ name2 = xstrdup(mkpath("%s:%s", branch2, b->path));
+
+ fill_mm(o->sha1, &orig);
+ fill_mm(a->sha1, &src1);
+ fill_mm(b->sha1, &src2);
+
+ ll_driver_name = git_path_check_merge(a->path);
+ driver = find_ll_merge_driver(ll_driver_name);
+
+ if (index_only && driver->recursive)
+ driver = find_ll_merge_driver(driver->recursive);
+ merge_status = driver->fn(driver, a->path,
+ &orig, &src1, name1, &src2, name2,
+ result_buf);
+
+ free(name1);
+ free(name2);
+ free(orig.ptr);
+ free(src1.ptr);
+ free(src2.ptr);
+ return merge_status;
+ }
+
+ static struct merge_file_info merge_file(struct diff_filespec *o,
+ struct diff_filespec *a, struct diff_filespec *b,
+ const char *branch1, const char *branch2)
+ {
+ struct merge_file_info result;
+ result.merge = 0;
+ result.clean = 1;
+
+ if ((S_IFMT & a->mode) != (S_IFMT & b->mode)) {
+ result.clean = 0;
+ if (S_ISREG(a->mode)) {
+ result.mode = a->mode;
+ hashcpy(result.sha, a->sha1);
+ } else {
+ result.mode = b->mode;
+ hashcpy(result.sha, b->sha1);
+ }
+ } else {
+ if (!sha_eq(a->sha1, o->sha1) && !sha_eq(b->sha1, o->sha1))
+ result.merge = 1;
+
+ result.mode = a->mode == o->mode ? b->mode: a->mode;
+
+ if (sha_eq(a->sha1, o->sha1))
+ hashcpy(result.sha, b->sha1);
+ else if (sha_eq(b->sha1, o->sha1))
+ hashcpy(result.sha, a->sha1);
+ else if (S_ISREG(a->mode)) {
+ mmbuffer_t result_buf;
+ int merge_status;
+
+ merge_status = ll_merge(&result_buf, o, a, b,
+ branch1, branch2);
+
+ if ((merge_status < 0) || !result_buf.ptr)
+ die("Failed to execute internal merge");
+
+ if (write_sha1_file(result_buf.ptr, result_buf.size,
+ blob_type, result.sha))
+ die("Unable to add %s to database",
+ a->path);
+
+ free(result_buf.ptr);
+ result.clean = (merge_status == 0);
+ } else if (S_ISGITLINK(a->mode)) {
+ result.clean = 0;
+ hashcpy(result.sha, a->sha1);
+ } else if (S_ISLNK(a->mode)) {
+ hashcpy(result.sha, a->sha1);
+
+ if (!sha_eq(a->sha1, b->sha1))
+ result.clean = 0;
+ } else {
+ die("unsupported object type in the tree");
+ }
+ }
+
+ return result;
+ }
+
+ static void conflict_rename_rename(struct rename *ren1,
+ const char *branch1,
+ struct rename *ren2,
+ const char *branch2)
+ {
+ char *del[2];
+ int delp = 0;
+ const char *ren1_dst = ren1->pair->two->path;
+ const char *ren2_dst = ren2->pair->two->path;
+ const char *dst_name1 = ren1_dst;
+ const char *dst_name2 = ren2_dst;
+ if (path_list_has_path(¤t_directory_set, ren1_dst)) {
+ dst_name1 = del[delp++] = unique_path(ren1_dst, branch1);
+ output(1, "%s is a directory in %s added as %s instead",
+ ren1_dst, branch2, dst_name1);
+ remove_file(0, ren1_dst, 0);
+ }
+ if (path_list_has_path(¤t_directory_set, ren2_dst)) {
+ dst_name2 = del[delp++] = unique_path(ren2_dst, branch2);
+ output(1, "%s is a directory in %s added as %s instead",
+ ren2_dst, branch1, dst_name2);
+ remove_file(0, ren2_dst, 0);
+ }
+ if (index_only) {
+ remove_file_from_cache(dst_name1);
+ remove_file_from_cache(dst_name2);
+ /*
+ * Uncomment to leave the conflicting names in the resulting tree
+ *
+ * update_file(0, ren1->pair->two->sha1, ren1->pair->two->mode, dst_name1);
+ * update_file(0, ren2->pair->two->sha1, ren2->pair->two->mode, dst_name2);
+ */
+ } else {
+ update_stages(dst_name1, NULL, ren1->pair->two, NULL, 1);
+ update_stages(dst_name2, NULL, NULL, ren2->pair->two, 1);
+ }
+ while (delp--)
+ free(del[delp]);
+ }
+
+ static void conflict_rename_dir(struct rename *ren1,
+ const char *branch1)
+ {
+ char *new_path = unique_path(ren1->pair->two->path, branch1);
+ output(1, "Renamed %s to %s instead", ren1->pair->one->path, new_path);
+ remove_file(0, ren1->pair->two->path, 0);
+ update_file(0, ren1->pair->two->sha1, ren1->pair->two->mode, new_path);
+ free(new_path);
+ }
+
+ static void conflict_rename_rename_2(struct rename *ren1,
+ const char *branch1,
+ struct rename *ren2,
+ const char *branch2)
+ {
+ char *new_path1 = unique_path(ren1->pair->two->path, branch1);
+ char *new_path2 = unique_path(ren2->pair->two->path, branch2);
+ output(1, "Renamed %s to %s and %s to %s instead",
+ ren1->pair->one->path, new_path1,
+ ren2->pair->one->path, new_path2);
+ remove_file(0, ren1->pair->two->path, 0);
+ update_file(0, ren1->pair->two->sha1, ren1->pair->two->mode, new_path1);
+ update_file(0, ren2->pair->two->sha1, ren2->pair->two->mode, new_path2);
+ free(new_path2);
+ free(new_path1);
+ }
+
+ static int process_renames(struct path_list *a_renames,
+ struct path_list *b_renames,
+ const char *a_branch,
+ const char *b_branch)
+ {
+ int clean_merge = 1, i, j;
+ struct path_list a_by_dst = {NULL, 0, 0, 0}, b_by_dst = {NULL, 0, 0, 0};
+ const struct rename *sre;
+
+ for (i = 0; i < a_renames->nr; i++) {
+ sre = a_renames->items[i].util;
+ path_list_insert(sre->pair->two->path, &a_by_dst)->util
+ = sre->dst_entry;
+ }
+ for (i = 0; i < b_renames->nr; i++) {
+ sre = b_renames->items[i].util;
+ path_list_insert(sre->pair->two->path, &b_by_dst)->util
+ = sre->dst_entry;
+ }
+
+ for (i = 0, j = 0; i < a_renames->nr || j < b_renames->nr;) {
+ int compare;
+ char *src;
+ struct path_list *renames1, *renames2, *renames2Dst;
+ struct rename *ren1 = NULL, *ren2 = NULL;
+ const char *branch1, *branch2;
+ const char *ren1_src, *ren1_dst;
+
+ if (i >= a_renames->nr) {
+ compare = 1;
+ ren2 = b_renames->items[j++].util;
+ } else if (j >= b_renames->nr) {
+ compare = -1;
+ ren1 = a_renames->items[i++].util;
+ } else {
+ compare = strcmp(a_renames->items[i].path,
+ b_renames->items[j].path);
+ if (compare <= 0)
+ ren1 = a_renames->items[i++].util;
+ if (compare >= 0)
+ ren2 = b_renames->items[j++].util;
+ }
+
+ /* TODO: refactor, so that 1/2 are not needed */
+ if (ren1) {
+ renames1 = a_renames;
+ renames2 = b_renames;
+ renames2Dst = &b_by_dst;
+ branch1 = a_branch;
+ branch2 = b_branch;
+ } else {
+ struct rename *tmp;
+ renames1 = b_renames;
+ renames2 = a_renames;
+ renames2Dst = &a_by_dst;
+ branch1 = b_branch;
+ branch2 = a_branch;
+ tmp = ren2;
+ ren2 = ren1;
+ ren1 = tmp;
+ }
+ src = ren1->pair->one->path;
+
+ ren1->dst_entry->processed = 1;
+ ren1->src_entry->processed = 1;
+
+ if (ren1->processed)
+ continue;
+ ren1->processed = 1;
+
+ ren1_src = ren1->pair->one->path;
+ ren1_dst = ren1->pair->two->path;
+
+ if (ren2) {
+ const char *ren2_src = ren2->pair->one->path;
+ const char *ren2_dst = ren2->pair->two->path;
+ /* Renamed in 1 and renamed in 2 */
+ if (strcmp(ren1_src, ren2_src) != 0)
+ die("ren1.src != ren2.src");
+ ren2->dst_entry->processed = 1;
+ ren2->processed = 1;
+ if (strcmp(ren1_dst, ren2_dst) != 0) {
+ clean_merge = 0;
+ output(1, "CONFLICT (rename/rename): "
+ "Rename \"%s\"->\"%s\" in branch \"%s\" "
+ "rename \"%s\"->\"%s\" in \"%s\"%s",
+ src, ren1_dst, branch1,
+ src, ren2_dst, branch2,
+ index_only ? " (left unresolved)": "");
+ if (index_only) {
+ remove_file_from_cache(src);
+ update_file(0, ren1->pair->one->sha1,
+ ren1->pair->one->mode, src);
+ }
+ conflict_rename_rename(ren1, branch1, ren2, branch2);
+ } else {
+ struct merge_file_info mfi;
+ remove_file(1, ren1_src, 1);
+ mfi = merge_file(ren1->pair->one,
+ ren1->pair->two,
+ ren2->pair->two,
+ branch1,
+ branch2);
+ if (mfi.merge || !mfi.clean)
+ output(1, "Renamed %s->%s", src, ren1_dst);
+
+ if (mfi.merge)
+ output(2, "Auto-merged %s", ren1_dst);
+
+ if (!mfi.clean) {
+ output(1, "CONFLICT (content): merge conflict in %s",
+ ren1_dst);
+ clean_merge = 0;
+
+ if (!index_only)
+ update_stages(ren1_dst,
+ ren1->pair->one,
+ ren1->pair->two,
+ ren2->pair->two,
+ 1 /* clear */);
+ }
+ update_file(mfi.clean, mfi.sha, mfi.mode, ren1_dst);
+ }
+ } else {
+ /* Renamed in 1, maybe changed in 2 */
+ struct path_list_item *item;
+ /* we only use sha1 and mode of these */
+ struct diff_filespec src_other, dst_other;
+ int try_merge, stage = a_renames == renames1 ? 3: 2;
+
+ remove_file(1, ren1_src, index_only || stage == 3);
+
+ hashcpy(src_other.sha1, ren1->src_entry->stages[stage].sha);
+ src_other.mode = ren1->src_entry->stages[stage].mode;
+ hashcpy(dst_other.sha1, ren1->dst_entry->stages[stage].sha);
+ dst_other.mode = ren1->dst_entry->stages[stage].mode;
+
+ try_merge = 0;
+
+ if (path_list_has_path(¤t_directory_set, ren1_dst)) {
+ clean_merge = 0;
+ output(1, "CONFLICT (rename/directory): Renamed %s->%s in %s "
+ " directory %s added in %s",
+ ren1_src, ren1_dst, branch1,
+ ren1_dst, branch2);
+ conflict_rename_dir(ren1, branch1);
+ } else if (sha_eq(src_other.sha1, null_sha1)) {
+ clean_merge = 0;
+ output(1, "CONFLICT (rename/delete): Renamed %s->%s in %s "
+ "and deleted in %s",
+ ren1_src, ren1_dst, branch1,
+ branch2);
+ update_file(0, ren1->pair->two->sha1, ren1->pair->two->mode, ren1_dst);
+ } else if (!sha_eq(dst_other.sha1, null_sha1)) {
+ const char *new_path;
+ clean_merge = 0;
+ try_merge = 1;
+ output(1, "CONFLICT (rename/add): Renamed %s->%s in %s. "
+ "%s added in %s",
+ ren1_src, ren1_dst, branch1,
+ ren1_dst, branch2);
+ new_path = unique_path(ren1_dst, branch2);
+ output(1, "Added as %s instead", new_path);
+ update_file(0, dst_other.sha1, dst_other.mode, new_path);
+ } else if ((item = path_list_lookup(ren1_dst, renames2Dst))) {
+ ren2 = item->util;
+ clean_merge = 0;
+ ren2->processed = 1;
+ output(1, "CONFLICT (rename/rename): Renamed %s->%s in %s. "
+ "Renamed %s->%s in %s",
+ ren1_src, ren1_dst, branch1,
+ ren2->pair->one->path, ren2->pair->two->path, branch2);
+ conflict_rename_rename_2(ren1, branch1, ren2, branch2);
+ } else
+ try_merge = 1;
+
+ if (try_merge) {
+ struct diff_filespec *o, *a, *b;
+ struct merge_file_info mfi;
+ src_other.path = (char *)ren1_src;
+
+ o = ren1->pair->one;
+ if (a_renames == renames1) {
+ a = ren1->pair->two;
+ b = &src_other;
+ } else {
+ b = ren1->pair->two;
+ a = &src_other;
+ }
+ mfi = merge_file(o, a, b,
+ a_branch, b_branch);
+
+ if (mfi.clean &&
+ sha_eq(mfi.sha, ren1->pair->two->sha1) &&
+ mfi.mode == ren1->pair->two->mode)
+ /*
+ * This messaged is part of
+ * t6022 test. If you change
+ * it update the test too.
+ */
+ output(3, "Skipped %s (merged same as existing)", ren1_dst);
+ else {
+ if (mfi.merge || !mfi.clean)
+ output(1, "Renamed %s => %s", ren1_src, ren1_dst);
+ if (mfi.merge)
+ output(2, "Auto-merged %s", ren1_dst);
+ if (!mfi.clean) {
+ output(1, "CONFLICT (rename/modify): Merge conflict in %s",
+ ren1_dst);
+ clean_merge = 0;
+
+ if (!index_only)
+ update_stages(ren1_dst,
+ o, a, b, 1);
+ }
+ update_file(mfi.clean, mfi.sha, mfi.mode, ren1_dst);
+ }
+ }
+ }
+ }
+ path_list_clear(&a_by_dst, 0);
+ path_list_clear(&b_by_dst, 0);
+
+ return clean_merge;
+ }
+
+ static unsigned char *stage_sha(const unsigned char *sha, unsigned mode)
+ {
+ return (is_null_sha1(sha) || mode == 0) ? NULL: (unsigned char *)sha;
+ }
+
+ /* Per entry merge function */
+ static int process_entry(const char *path, struct stage_data *entry,
+ const char *branch1,
+ const char *branch2)
+ {
+ /*
+ printf("processing entry, clean cache: %s\n", index_only ? "yes": "no");
+ print_index_entry("\tpath: ", entry);
+ */
+ int clean_merge = 1;
+ unsigned o_mode = entry->stages[1].mode;
+ unsigned a_mode = entry->stages[2].mode;
+ unsigned b_mode = entry->stages[3].mode;
+ unsigned char *o_sha = stage_sha(entry->stages[1].sha, o_mode);
+ unsigned char *a_sha = stage_sha(entry->stages[2].sha, a_mode);
+ unsigned char *b_sha = stage_sha(entry->stages[3].sha, b_mode);
+
+ if (o_sha && (!a_sha || !b_sha)) {
+ /* Case A: Deleted in one */
+ if ((!a_sha && !b_sha) ||
+ (sha_eq(a_sha, o_sha) && !b_sha) ||
+ (!a_sha && sha_eq(b_sha, o_sha))) {
+ /* Deleted in both or deleted in one and
+ * unchanged in the other */
+ if (a_sha)
+ output(2, "Removed %s", path);
+ /* do not touch working file if it did not exist */
+ remove_file(1, path, !a_sha);
+ } else {
+ /* Deleted in one and changed in the other */
+ clean_merge = 0;
+ if (!a_sha) {
+ output(1, "CONFLICT (delete/modify): %s deleted in %s "
+ "and modified in %s. Version %s of %s left in tree.",
+ path, branch1,
+ branch2, branch2, path);
+ update_file(0, b_sha, b_mode, path);
+ } else {
+ output(1, "CONFLICT (delete/modify): %s deleted in %s "
+ "and modified in %s. Version %s of %s left in tree.",
+ path, branch2,
+ branch1, branch1, path);
+ update_file(0, a_sha, a_mode, path);
+ }
+ }
+
+ } else if ((!o_sha && a_sha && !b_sha) ||
+ (!o_sha && !a_sha && b_sha)) {
+ /* Case B: Added in one. */
+ const char *add_branch;
+ const char *other_branch;
+ unsigned mode;
+ const unsigned char *sha;
+ const char *conf;
+
+ if (a_sha) {
+ add_branch = branch1;
+ other_branch = branch2;
+ mode = a_mode;
+ sha = a_sha;
+ conf = "file/directory";
+ } else {
+ add_branch = branch2;
+ other_branch = branch1;
+ mode = b_mode;
+ sha = b_sha;
+ conf = "directory/file";
+ }
+ if (path_list_has_path(¤t_directory_set, path)) {
+ const char *new_path = unique_path(path, add_branch);
+ clean_merge = 0;
+ output(1, "CONFLICT (%s): There is a directory with name %s in %s. "
+ "Added %s as %s",
+ conf, path, other_branch, path, new_path);
+ remove_file(0, path, 0);
+ update_file(0, sha, mode, new_path);
+ } else {
+ output(2, "Added %s", path);
+ update_file(1, sha, mode, path);
+ }
+ } else if (a_sha && b_sha) {
+ /* Case C: Added in both (check for same permissions) and */
+ /* case D: Modified in both, but differently. */
+ const char *reason = "content";
+ struct merge_file_info mfi;
+ struct diff_filespec o, a, b;
+
+ if (!o_sha) {
+ reason = "add/add";
+ o_sha = (unsigned char *)null_sha1;
+ }
+ output(2, "Auto-merged %s", path);
+ o.path = a.path = b.path = (char *)path;
+ hashcpy(o.sha1, o_sha);
+ o.mode = o_mode;
+ hashcpy(a.sha1, a_sha);
+ a.mode = a_mode;
+ hashcpy(b.sha1, b_sha);
+ b.mode = b_mode;
+
+ mfi = merge_file(&o, &a, &b,
+ branch1, branch2);
+
+ clean_merge = mfi.clean;
+ if (mfi.clean)
+ update_file(1, mfi.sha, mfi.mode, path);
+ else if (S_ISGITLINK(mfi.mode))
+ output(1, "CONFLICT (submodule): Merge conflict in %s "
+ "- needs %s", path, sha1_to_hex(b.sha1));
+ else {
+ output(1, "CONFLICT (%s): Merge conflict in %s",
+ reason, path);
+
+ if (index_only)
+ update_file(0, mfi.sha, mfi.mode, path);
+ else
+ update_file_flags(mfi.sha, mfi.mode, path,
+ 0 /* update_cache */, 1 /* update_working_directory */);
+ }
+ } else if (!o_sha && !a_sha && !b_sha) {
+ /*
+ * this entry was deleted altogether. a_mode == 0 means
+ * we had that path and want to actively remove it.
+ */
+ remove_file(1, path, !a_mode);
+ } else
+ die("Fatal merge failure, shouldn't happen.");
+
+ return clean_merge;
+ }
+
+ int merge_trees(struct tree *head,
+ struct tree *merge,
+ struct tree *common,
+ const char *branch1,
+ const char *branch2,
+ struct tree **result)
+ {
+ int code, clean;
+
+ if (subtree_merge) {
+ merge = shift_tree_object(head, merge);
+ common = shift_tree_object(head, common);
+ }
+
+ if (sha_eq(common->object.sha1, merge->object.sha1)) {
+ output(0, "Already uptodate!");
+ *result = head;
+ return 1;
+ }
+
+ code = git_merge_trees(index_only, common, head, merge);
+
+ if (code != 0)
+ die("merging of trees %s and %s failed",
+ sha1_to_hex(head->object.sha1),
+ sha1_to_hex(merge->object.sha1));
+
+ if (unmerged_cache()) {
+ struct path_list *entries, *re_head, *re_merge;
+ int i;
+ path_list_clear(¤t_file_set, 1);
+ path_list_clear(¤t_directory_set, 1);
+ get_files_dirs(head);
+ get_files_dirs(merge);
+
+ entries = get_unmerged();
+ re_head = get_renames(head, common, head, merge, entries);
+ re_merge = get_renames(merge, common, head, merge, entries);
+ clean = process_renames(re_head, re_merge,
+ branch1, branch2);
+ for (i = 0; i < entries->nr; i++) {
+ const char *path = entries->items[i].path;
+ struct stage_data *e = entries->items[i].util;
+ if (!e->processed
+ && !process_entry(path, e, branch1, branch2))
+ clean = 0;
+ }
+
+ path_list_clear(re_merge, 0);
+ path_list_clear(re_head, 0);
+ path_list_clear(entries, 1);
+
+ }
+ else
+ clean = 1;
+
+ if (index_only)
+ *result = write_tree_from_memory();
+
+ return clean;
+ }
+
+ static struct commit_list *reverse_commit_list(struct commit_list *list)
+ {
+ struct commit_list *next = NULL, *current, *backup;
+ for (current = list; current; current = backup) {
+ backup = current->next;
+ current->next = next;
+ next = current;
+ }
+ return next;
+ }
+
+ /*
+ * Merge the commits h1 and h2, return the resulting virtual
+ * commit object and a flag indicating the cleanness of the merge.
+ */
+ int merge_recursive(struct commit *h1,
+ struct commit *h2,
+ const char *branch1,
+ const char *branch2,
+ struct commit_list *ca,
+ struct commit **result)
+ {
+ struct commit_list *iter;
+ struct commit *merged_common_ancestors;
+ struct tree *mrtree = mrtree;
+ int clean;
+
+ if (show(4)) {
+ output(4, "Merging:");
+ output_commit_title(h1);
+ output_commit_title(h2);
+ }
+
+ if (!ca) {
+ ca = get_merge_bases(h1, h2, 1);
+ ca = reverse_commit_list(ca);
+ }
+
+ if (show(5)) {
+ output(5, "found %u common ancestor(s):", commit_list_count(ca));
+ for (iter = ca; iter; iter = iter->next)
+ output_commit_title(iter->item);
+ }
+
+ merged_common_ancestors = pop_commit(&ca);
+ if (merged_common_ancestors == NULL) {
+ /* if there is no common ancestor, make an empty tree */
+ struct tree *tree = xcalloc(1, sizeof(struct tree));
+
+ tree->object.parsed = 1;
+ tree->object.type = OBJ_TREE;
+ pretend_sha1_file(NULL, 0, OBJ_TREE, tree->object.sha1);
+ merged_common_ancestors = make_virtual_commit(tree, "ancestor");
+ }
+
+ for (iter = ca; iter; iter = iter->next) {
+ call_depth++;
+ /*
+ * When the merge fails, the result contains files
+ * with conflict markers. The cleanness flag is
+ * ignored, it was never actually used, as result of
+ * merge_trees has always overwritten it: the committed
+ * "conflicts" were already resolved.
+ */
+ discard_cache();
+ merge_recursive(merged_common_ancestors, iter->item,
+ "Temporary merge branch 1",
+ "Temporary merge branch 2",
+ NULL,
+ &merged_common_ancestors);
+ call_depth--;
+
+ if (!merged_common_ancestors)
+ die("merge returned no commit");
+ }
+
+ discard_cache();
+ if (!call_depth) {
+ read_cache();
+ index_only = 0;
+ } else
+ index_only = 1;
+
+ clean = merge_trees(h1->tree, h2->tree, merged_common_ancestors->tree,
+ branch1, branch2, &mrtree);
+
+ if (index_only) {
+ *result = make_virtual_commit(mrtree, "merged tree");
+ commit_list_insert(h1, &(*result)->parents);
+ commit_list_insert(h2, &(*result)->parents->next);
+ }
+ flush_output();
+ return clean;
+ }
+
+ static const char *better_branch_name(const char *branch)
+ {
+ static char githead_env[8 + 40 + 1];
+ char *name;
+
+ if (strlen(branch) != 40)
+ return branch;
+ sprintf(githead_env, "GITHEAD_%s", branch);
+ name = getenv(githead_env);
+ return name ? name : branch;
+ }
+
+ static struct commit *get_ref(const char *ref)
+ {
+ unsigned char sha1[20];
+ struct object *object;
+
+ if (get_sha1(ref, sha1))
+ die("Could not resolve ref '%s'", ref);
+ object = deref_tag(parse_object(sha1), ref, strlen(ref));
++ if (!object)
++ return NULL;
+ if (object->type == OBJ_TREE)
+ return make_virtual_commit((struct tree*)object,
+ better_branch_name(ref));
+ if (object->type != OBJ_COMMIT)
+ return NULL;
+ if (parse_commit((struct commit *)object))
+ die("Could not parse commit '%s'", sha1_to_hex(object->sha1));
+ return (struct commit *)object;
+ }
+
+ static int merge_config(const char *var, const char *value)
+ {
+ if (!strcasecmp(var, "merge.verbosity")) {
+ verbosity = git_config_int(var, value);
+ return 0;
+ }
+ if (!strcasecmp(var, "diff.renamelimit")) {
+ rename_limit = git_config_int(var, value);
+ return 0;
+ }
+ return git_default_config(var, value);
+ }
+
+ int cmd_merge_recursive(int argc, const char **argv, const char *prefix)
+ {
+ static const char *bases[20];
+ static unsigned bases_count = 0;
+ int i, clean;
+ const char *branch1, *branch2;
+ struct commit *result, *h1, *h2;
+ struct commit_list *ca = NULL;
+ struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
+ int index_fd;
+
+ if (argv[0]) {
+ int namelen = strlen(argv[0]);
+ if (8 < namelen &&
+ !strcmp(argv[0] + namelen - 8, "-subtree"))
+ subtree_merge = 1;
+ }
+
+ git_config(merge_config);
+ if (getenv("GIT_MERGE_VERBOSITY"))
+ verbosity = strtol(getenv("GIT_MERGE_VERBOSITY"), NULL, 10);
+
+ if (argc < 4)
+ die("Usage: %s <base>... -- <head> <remote> ...\n", argv[0]);
+
+ for (i = 1; i < argc; ++i) {
+ if (!strcmp(argv[i], "--"))
+ break;
+ if (bases_count < sizeof(bases)/sizeof(*bases))
+ bases[bases_count++] = argv[i];
+ }
+ if (argc - i != 3) /* "--" "<head>" "<remote>" */
+ die("Not handling anything other than two heads merge.");
+ if (verbosity >= 5)
+ buffer_output = 0;
+
+ branch1 = argv[++i];
+ branch2 = argv[++i];
+
+ h1 = get_ref(branch1);
+ h2 = get_ref(branch2);
+
+ branch1 = better_branch_name(branch1);
+ branch2 = better_branch_name(branch2);
+
+ if (show(3))
+ printf("Merging %s with %s\n", branch1, branch2);
+
+ index_fd = hold_locked_index(lock, 1);
+
+ for (i = 0; i < bases_count; i++) {
+ struct commit *ancestor = get_ref(bases[i]);
+ ca = commit_list_insert(ancestor, &ca);
+ }
+ clean = merge_recursive(h1, h2, branch1, branch2, ca, &result);
+
+ if (active_cache_changed &&
+ (write_cache(index_fd, active_cache, active_nr) ||
+ commit_locked_index(lock)))
+ die ("unable to write %s", get_index_file());
+
+ return clean ? 0: 1;
+ }
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce)) {
+ remove_index_entry(ce);
if (last && !strcmp(ce->name, last->name))
continue;
cache_tree_invalidate_path(active_cache_tree, ce->name);
last = ce;
- ce->ce_flags |= CE_REMOVE;
+ continue;
}
*dst++ = ce;
}
parse_tree(tree);
init_tree_desc(t+i, tree->buffer, tree->size);
}
- unpack_trees(nr_trees, t, &opts);
+ if (unpack_trees(nr_trees, t, &opts))
+ return 128;
/*
* When reading only one tree (either the most basic form,
extern void list_common_cmds_help(void);
extern void help_unknown_cmd(const char *cmd);
-extern int write_tree(unsigned char *sha1, int missing_ok, const char *prefix);
extern void prune_packed_objects(int);
extern int cmd_add(int argc, const char **argv, const char *prefix);
extern int cmd_branch(int argc, const char **argv, const char *prefix);
extern int cmd_bundle(int argc, const char **argv, const char *prefix);
extern int cmd_cat_file(int argc, const char **argv, const char *prefix);
+ extern int cmd_checkout(int argc, const char **argv, const char *prefix);
extern int cmd_checkout_index(int argc, const char **argv, const char *prefix);
extern int cmd_check_attr(int argc, const char **argv, const char *prefix);
extern int cmd_check_ref_format(int argc, const char **argv, const char *prefix);
extern int cmd_merge_base(int argc, const char **argv, const char *prefix);
extern int cmd_merge_ours(int argc, const char **argv, const char *prefix);
extern int cmd_merge_file(int argc, const char **argv, const char *prefix);
+ extern int cmd_merge_recursive(int argc, const char **argv, const char *prefix);
extern int cmd_mv(int argc, const char **argv, const char *prefix);
extern int cmd_name_rev(int argc, const char **argv, const char *prefix);
extern int cmd_pack_objects(int argc, const char **argv, const char *prefix);
};
struct cache_entry {
- struct cache_entry *next;
unsigned int ce_ctime;
unsigned int ce_mtime;
unsigned int ce_dev;
unsigned int ce_size;
unsigned int ce_flags;
unsigned char sha1[20];
+ struct cache_entry *next;
char name[FLEX_ARRAY]; /* more */
};
#define CE_UPDATE (0x10000)
#define CE_REMOVE (0x20000)
#define CE_UPTODATE (0x40000)
-#define CE_UNHASHED (0x80000)
+
+#define CE_HASHED (0x100000)
+#define CE_UNHASHED (0x200000)
+
+/*
+ * Copy the sha1 and stat state of a cache entry from one to
+ * another. But we never change the name, or the hash state!
+ */
+#define CE_STATE_MASK (CE_HASHED | CE_UNHASHED)
+static inline void copy_cache_entry(struct cache_entry *dst, struct cache_entry *src)
+{
+ unsigned int state = dst->ce_flags & CE_STATE_MASK;
+
+ /* Don't copy hash chain and name */
+ memcpy(dst, src, offsetof(struct cache_entry, next));
+
+ /* Restore the hash state */
+ dst->ce_flags = (dst->ce_flags & ~CE_STATE_MASK) | state;
+}
+
+/*
+ * We don't actually *remove* it, we can just mark it invalid so that
+ * we won't find it in lookups.
+ *
+ * Not only would we have to search the lists (simple enough), but
+ * we'd also have to rehash other hash buckets in case this makes the
+ * hash bucket empty (common). So it's much better to just mark
+ * it.
+ */
+static inline void remove_index_entry(struct cache_entry *ce)
+{
+ ce->ce_flags |= CE_UNHASHED;
+}
static inline unsigned create_ce_flags(size_t len, unsigned stage)
{
}
return create_ce_mode(mode);
}
+static inline int ce_to_dtype(const struct cache_entry *ce)
+{
+ unsigned ce_mode = ntohl(ce->ce_mode);
+ if (S_ISREG(ce_mode))
+ return DT_REG;
+ else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
+ return DT_DIR;
+ else if (S_ISLNK(ce_mode))
+ return DT_LNK;
+ else
+ return DT_UNKNOWN;
+}
#define canon_mode(mode) \
(S_ISREG(mode) ? (S_IFREG | ce_permissions(mode)) : \
S_ISLNK(mode) ? S_IFLNK : S_ISDIR(mode) ? S_IFDIR : S_IFGITLINK)
#define read_cache_from(path) read_index_from(&the_index, (path))
#define write_cache(newfd, cache, entries) write_index(&the_index, (newfd))
#define discard_cache() discard_index(&the_index)
+ #define unmerged_cache() unmerged_index(&the_index)
#define cache_name_pos(name, namelen) index_name_pos(&the_index,(name),(namelen))
#define add_cache_entry(ce, option) add_index_entry(&the_index, (ce), (option))
#define remove_cache_entry_at(pos) remove_index_entry_at(&the_index, (pos))
extern int read_index_from(struct index_state *, const char *path);
extern int write_index(struct index_state *, int newfd);
extern int discard_index(struct index_state *);
+ extern int unmerged_index(struct index_state *);
extern int verify_path(const char *path);
extern int index_name_exists(struct index_state *istate, const char *name, int namelen);
extern int index_name_pos(struct index_state *, const char *name, int namelen);
extern size_t delta_base_cache_limit;
extern int auto_crlf;
+enum safe_crlf {
+ SAFE_CRLF_FALSE = 0,
+ SAFE_CRLF_FAIL = 1,
+ SAFE_CRLF_WARN = 2,
+};
+
+extern enum safe_crlf safe_crlf;
+
#define GIT_REPO_VERSION 0
extern int repository_format_version;
extern int check_repository_format(void);
extern int git_config_int(const char *, const char *);
extern unsigned long git_config_ulong(const char *, const char *);
extern int git_config_bool(const char *, const char *);
+extern int git_config_string(const char **, const char *, const char *);
extern int git_config_set(const char *, const char *);
extern int git_config_set_multivar(const char *, const char *, const char *, int);
extern int git_config_rename_section(const char *, const char *);
extern const char *git_etc_gitconfig(void);
extern int check_repository_format_version(const char *var, const char *value);
+extern int git_env_bool(const char *, int);
+extern int git_config_system(void);
+extern int git_config_global(void);
+extern int config_error_nonbool(const char *);
#define MAX_GITNAME (1000)
extern char git_default_email[MAX_GITNAME];
/* IO helper functions */
extern void maybe_flush_or_die(FILE *, const char *);
extern int copy_fd(int ifd, int ofd);
+extern int copy_file(const char *dst, const char *src, int mode);
extern int read_in_full(int fd, void *buf, size_t count);
extern int write_in_full(int fd, const void *buf, size_t count);
extern void write_or_die(int fd, const void *buf, size_t count);
/* pager.c */
extern void setup_pager(void);
-extern char *pager_program;
+extern const char *pager_program;
extern int pager_in_use(void);
extern int pager_use_color;
-extern char *editor_program;
-extern char *excludes_file;
+extern const char *editor_program;
+extern const char *excludes_file;
/* base85 */
int decode_85(char *dst, const char *line, int linelen);
/* convert.c */
/* returns 1 if *dst was used */
-extern int convert_to_git(const char *path, const char *src, size_t len, struct strbuf *dst);
+extern int convert_to_git(const char *path, const char *src, size_t len,
+ struct strbuf *dst, enum safe_crlf checksafe);
extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst);
/* add */
#define WS_TRAILING_SPACE 01
#define WS_SPACE_BEFORE_TAB 02
#define WS_INDENT_WITH_NON_TAB 04
+#define WS_CR_AT_EOL 010
#define WS_DEFAULT_RULE (WS_TRAILING_SPACE|WS_SPACE_BEFORE_TAB)
extern unsigned whitespace_rule_cfg;
extern unsigned whitespace_rule(const char *);
FILE *stream, const char *set,
const char *reset, const char *ws);
extern char *whitespace_error_string(unsigned ws);
+extern int ws_fix_copy(char *, const char *, int, unsigned, int *);
/* ls-files */
int pathspec_match(const char **spec, char *matched, const char *filename, int skiplen);
int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset);
void overlay_tree_on_cache(const char *tree_name, const char *prefix);
+char *alias_lookup(const char *alias);
+
#endif /* CACHE_H */
--- /dev/null
-if rev=$(git rev-parse --verify "$arg^0" 2>/dev/null)
+ #!/bin/sh
+
+ OPTIONS_KEEPDASHDASH=t
+ OPTIONS_SPEC="\
+ git-checkout [options] [<branch>] [<paths>...]
+ --
+ b= create a new branch started at <branch>
+ l create the new branch's reflog
+ track arrange that the new branch tracks the remote branch
+ f proceed even if the index or working tree is not HEAD
+ m merge local modifications into the new branch
+ q,quiet be quiet
+ "
+ SUBDIRECTORY_OK=Sometimes
+ . git-sh-setup
+ require_work_tree
+
+ old_name=HEAD
+ old=$(git rev-parse --verify $old_name 2>/dev/null)
+ oldbranch=$(git symbolic-ref $old_name 2>/dev/null)
+ new=
+ new_name=
+ force=
+ branch=
+ track=
+ newbranch=
+ newbranch_log=
+ merge=
+ quiet=
+ v=-v
+ LF='
+ '
+
+ while test $# != 0; do
+ case "$1" in
+ -b)
+ shift
+ newbranch="$1"
+ [ -z "$newbranch" ] &&
+ die "git checkout: -b needs a branch name"
+ git show-ref --verify --quiet -- "refs/heads/$newbranch" &&
+ die "git checkout: branch $newbranch already exists"
+ git check-ref-format "heads/$newbranch" ||
+ die "git checkout: we do not like '$newbranch' as a branch name."
+ ;;
+ -l)
+ newbranch_log=-l
+ ;;
+ --track|--no-track)
+ track="$1"
+ ;;
+ -f)
+ force=1
+ ;;
+ -m)
+ merge=1
+ ;;
+ -q|--quiet)
+ quiet=1
+ v=
+ ;;
+ --)
+ shift
+ break
+ ;;
+ *)
+ usage
+ ;;
+ esac
+ shift
+ done
+
+ arg="$1"
-elif rev=$(git rev-parse --verify "$arg^{tree}" 2>/dev/null)
++rev=$(git rev-parse --verify "$arg" 2>/dev/null)
++if rev=$(git rev-parse --verify "$rev^0" 2>/dev/null)
+ then
+ [ -z "$rev" ] && die "unknown flag $arg"
+ new_name="$arg"
+ if git show-ref --verify --quiet -- "refs/heads/$arg"
+ then
+ rev=$(git rev-parse --verify "refs/heads/$arg^0")
+ branch="$arg"
+ fi
+ new="$rev"
+ shift
- new_name="$arg^{tree}"
++elif rev=$(git rev-parse --verify "$rev^{tree}" 2>/dev/null)
+ then
+ # checking out selected paths from a tree-ish.
+ new="$rev"
- merge_error=$(git read-tree -m -u --exclude-per-directory=.gitignore $old $new 2>&1) || (
- case "$merge" in
- '')
- echo >&2 "$merge_error"
++ new_name="$rev^{tree}"
+ shift
+ fi
+ [ "$1" = "--" ] && shift
+
+ case "$newbranch,$track" in
+ ,--*)
+ die "git checkout: --track and --no-track require -b"
+ esac
+
+ case "$force$merge" in
+ 11)
+ die "git checkout: -f and -m are incompatible"
+ esac
+
+ # The behaviour of the command with and without explicit path
+ # parameters is quite different.
+ #
+ # Without paths, we are checking out everything in the work tree,
+ # possibly switching branches. This is the traditional behaviour.
+ #
+ # With paths, we are _never_ switching branch, but checking out
+ # the named paths from either index (when no rev is given),
+ # or the named tree-ish (when rev is given).
+
+ if test "$#" -ge 1
+ then
+ hint=
+ if test "$#" -eq 1
+ then
+ hint="
+ Did you intend to checkout '$@' which can not be resolved as commit?"
+ fi
+ if test '' != "$newbranch$force$merge"
+ then
+ die "git checkout: updating paths is incompatible with switching branches/forcing$hint"
+ fi
+ if test '' != "$new"
+ then
+ # from a specific tree-ish; note that this is for
+ # rescuing paths and is never meant to remove what
+ # is not in the named tree-ish.
+ git ls-tree --full-name -r "$new" "$@" |
+ git update-index --index-info || exit $?
+ fi
+
+ # Make sure the request is about existing paths.
+ git ls-files --full-name --error-unmatch -- "$@" >/dev/null || exit
+ git ls-files --full-name -- "$@" |
+ (cd_to_toplevel && git checkout-index -f -u --stdin)
+
+ # Run a post-checkout hook -- the HEAD does not change so the
+ # current HEAD is passed in for both args
+ if test -x "$GIT_DIR"/hooks/post-checkout; then
+ "$GIT_DIR"/hooks/post-checkout $old $old 0
+ fi
+
+ exit $?
+ else
+ # Make sure we did not fall back on $arg^{tree} codepath
+ # since we are not checking out from an arbitrary tree-ish,
+ # but switching branches.
+ if test '' != "$new"
+ then
+ git rev-parse --verify "$new^{commit}" >/dev/null 2>&1 ||
+ die "Cannot switch branch to a non-commit."
+ fi
+ fi
+
+ # We are switching branches and checking out trees, so
+ # we *NEED* to be at the toplevel.
+ cd_to_toplevel
+
+ [ -z "$new" ] && new=$old && new_name="$old_name"
+
+ # If we don't have an existing branch that we're switching to,
+ # and we don't have a new branch name for the target we
+ # are switching to, then we are detaching our HEAD from any
+ # branch. However, if "git checkout HEAD" detaches the HEAD
+ # from the current branch, even though that may be logically
+ # correct, it feels somewhat funny. More importantly, we do not
+ # want "git checkout" nor "git checkout -f" to detach HEAD.
+
+ detached=
+ detach_warn=
+
+ describe_detached_head () {
+ test -n "$quiet" || {
+ printf >&2 "$1 "
+ GIT_PAGER= git log >&2 -1 --pretty=oneline --abbrev-commit "$2" --
+ }
+ }
+
+ if test -z "$branch$newbranch" && test "$new_name" != "$old_name"
+ then
+ detached="$new"
+ if test -n "$oldbranch" && test -z "$quiet"
+ then
+ detach_warn="Note: moving to \"$new_name\" which isn't a local branch
+ If you want to create a new branch from this checkout, you may do so
+ (now or later) by using -b with the checkout command again. Example:
+ git checkout -b <new_branch_name>"
+ fi
+ elif test -z "$oldbranch" && test "$new" != "$old"
+ then
+ describe_detached_head 'Previous HEAD position was' "$old"
+ fi
+
+ if [ "X$old" = X ]
+ then
+ if test -z "$quiet"
+ then
+ echo >&2 "warning: You appear to be on a branch yet to be born."
+ echo >&2 "warning: Forcing checkout of $new_name."
+ fi
+ force=1
+ fi
+
+ if [ "$force" ]
+ then
+ git read-tree $v --reset -u $new
+ else
+ git update-index --refresh >/dev/null
++ git read-tree $v -m -u --exclude-per-directory=.gitignore $old $new || (
++ case "$merge,$v" in
++ ,*)
+ exit 1 ;;
++ 1,)
++ ;; # quiet
++ *)
++ echo >&2 "Falling back to 3-way merge..." ;;
+ esac
+
+ # Match the index to the working tree, and do a three-way.
+ git diff-files --name-only | git update-index --remove --stdin &&
+ work=`git write-tree` &&
+ git read-tree $v --reset -u $new || exit
+
+ eval GITHEAD_$new='${new_name:-${branch:-$new}}' &&
+ eval GITHEAD_$work=local &&
+ export GITHEAD_$new GITHEAD_$work &&
+ git merge-recursive $old -- $new $work
+
+ # Do not register the cleanly merged paths in the index yet.
+ # this is not a real merge before committing, but just carrying
+ # the working tree changes along.
+ unmerged=`git ls-files -u`
+ git read-tree $v --reset $new
+ case "$unmerged" in
+ '') ;;
+ *)
+ (
+ z40=0000000000000000000000000000000000000000
+ echo "$unmerged" |
+ sed -e 's/^[0-7]* [0-9a-f]* /'"0 $z40 /"
+ echo "$unmerged"
+ ) | git update-index --index-info
+ ;;
+ esac
+ exit 0
+ )
+ saved_err=$?
+ if test "$saved_err" = 0 && test -z "$quiet"
+ then
+ git diff-index --name-status "$new"
+ fi
+ (exit $saved_err)
+ fi
+
+ #
+ # Switch the HEAD pointer to the new branch if we
+ # checked out a branch head, and remove any potential
+ # old MERGE_HEAD's (subsequent commits will clearly not
+ # be based on them, since we re-set the index)
+ #
+ if [ "$?" -eq 0 ]; then
+ if [ "$newbranch" ]; then
+ git branch $track $newbranch_log "$newbranch" "$new_name" || exit
+ branch="$newbranch"
+ fi
+ if test -n "$branch"
+ then
+ old_branch_name=`expr "z$oldbranch" : 'zrefs/heads/\(.*\)'`
+ GIT_DIR="$GIT_DIR" git symbolic-ref -m "checkout: moving from ${old_branch_name:-$old} to $branch" HEAD "refs/heads/$branch"
+ if test -n "$quiet"
+ then
+ true # nothing
+ elif test "refs/heads/$branch" = "$oldbranch"
+ then
+ echo >&2 "Already on branch \"$branch\""
+ else
+ echo >&2 "Switched to${newbranch:+ a new} branch \"$branch\""
+ fi
+ elif test -n "$detached"
+ then
+ old_branch_name=`expr "z$oldbranch" : 'zrefs/heads/\(.*\)'`
+ git update-ref --no-deref -m "checkout: moving from ${old_branch_name:-$old} to $arg" HEAD "$detached" ||
+ die "Cannot detach HEAD"
+ if test -n "$detach_warn"
+ then
+ echo >&2 "$detach_warn"
+ fi
+ describe_detached_head 'HEAD is now at' HEAD
+ fi
+ rm -f "$GIT_DIR/MERGE_HEAD"
+ else
+ exit 1
+ fi
+
+ # Run a post-checkout hook
+ if test -x "$GIT_DIR"/hooks/post-checkout; then
+ "$GIT_DIR"/hooks/post-checkout $old $new 1
+ fi
return handled;
}
-static const char *alias_command;
-static char *alias_string;
-
-static int git_alias_config(const char *var, const char *value)
-{
- if (!prefixcmp(var, "alias.") && !strcmp(var + 6, alias_command)) {
- alias_string = xstrdup(value);
- }
- return 0;
-}
-
static int split_cmdline(char *cmdline, const char ***argv)
{
int src, dst, count = 0, size = 16;
const char *subdir;
int count, option_count;
const char** new_argv;
+ const char *alias_command;
+ char *alias_string;
subdir = setup_git_directory_gently(&nongit);
alias_command = (*argv)[0];
- git_config(git_alias_config);
+ alias_string = alias_lookup(alias_command);
if (alias_string) {
if (alias_string[0] == '!') {
if (*argcp > 1) {
{ "branch", cmd_branch, RUN_SETUP },
{ "bundle", cmd_bundle },
{ "cat-file", cmd_cat_file, RUN_SETUP },
+ { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
{ "checkout-index", cmd_checkout_index,
RUN_SETUP | NEED_WORK_TREE},
{ "check-ref-format", cmd_check_ref_format },
{ "merge-base", cmd_merge_base, RUN_SETUP },
{ "merge-file", cmd_merge_file },
{ "merge-ours", cmd_merge_ours, RUN_SETUP },
+ { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
+ { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
{ "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
{ "name-rev", cmd_name_rev, RUN_SETUP },
{ "pack-objects", cmd_pack_objects, RUN_SETUP },
static void hash_index_entry(struct index_state *istate, struct cache_entry *ce)
{
void **pos;
- unsigned int hash = hash_name(ce->name, ce_namelen(ce));
+ unsigned int hash;
+ if (ce->ce_flags & CE_HASHED)
+ return;
+ ce->ce_flags |= CE_HASHED;
+ ce->next = NULL;
+ hash = hash_name(ce->name, ce_namelen(ce));
pos = insert_hash(hash, ce, &istate->name_hash);
if (pos) {
ce->next = *pos;
static void set_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
{
+ ce->ce_flags &= ~CE_UNHASHED;
istate->cache[nr] = ce;
if (istate->name_hash_initialized)
hash_index_entry(istate, ce);
}
-/*
- * We don't actually *remove* it, we can just mark it invalid so that
- * we won't find it in lookups.
- *
- * Not only would we have to search the lists (simple enough), but
- * we'd also have to rehash other hash buckets in case this makes the
- * hash bucket empty (common). So it's much better to just mark
- * it.
- */
-static void remove_hash_entry(struct index_state *istate, struct cache_entry *ce)
-{
- ce->ce_flags |= CE_UNHASHED;
-}
-
static void replace_index_entry(struct index_state *istate, int nr, struct cache_entry *ce)
{
struct cache_entry *old = istate->cache[nr];
- if (ce != old) {
- remove_hash_entry(istate, old);
- set_index_entry(istate, nr, ce);
- }
+ remove_index_entry(old);
+ set_index_entry(istate, nr, ce);
istate->cache_changed = 1;
}
{
struct cache_entry *ce = istate->cache[pos];
- remove_hash_entry(istate, ce);
+ remove_index_entry(ce);
istate->cache_changed = 1;
istate->cache_nr--;
if (pos >= istate->cache_nr)
return 0;
}
+ int unmerged_index(struct index_state *istate)
+ {
+ int i;
+ for (i = 0; i < istate->cache_nr; i++) {
+ if (ce_stage(istate->cache[i]))
+ return 1;
+ }
+ return 0;
+ }
+
#define WRITE_BUFFER_SIZE 8192
static unsigned char write_buffer[WRITE_BUFFER_SIZE];
static unsigned long write_buffer_len;
fill 0 1 2 3 4 5 6 7 8 >same &&
cp same kept
git checkout side >messages &&
- git diff same kept
+ diff -u same kept
(cat > messages.expect <<EOF
M same
EOF
) &&
touch messages.expect &&
- git diff messages.expect messages
+ diff -u messages.expect messages
'
test_expect_success "checkout -m with dirty tree" '
test "$(git symbolic-ref HEAD)" = "refs/heads/side" &&
(cat >expect.messages <<EOF
- Merging side with local
- Merging:
- ab76817 Side M one, D two, A three
- virtual local
- found 1 common ancestor(s):
- 7329388 Initial A one, A two
- Auto-merged one
M one
EOF
) &&
- git diff expect.messages messages &&
+ diff -u expect.messages messages &&
fill "M one" "A three" "D two" >expect.master &&
git diff --name-status master >current.master &&
- diff expect.master current.master &&
+ diff -u expect.master current.master &&
fill "M one" >expect.side &&
git diff --name-status side >current.side &&
- diff expect.side current.side &&
+ diff -u expect.side current.side &&
: >expect.index &&
git diff --cached >current.index &&
- diff expect.index current.index
+ diff -u expect.index current.index
'
test_expect_success "checkout -m with dirty tree, renamed" '
git checkout -m renamer &&
fill 1 3 4 5 7 8 >expect &&
- diff expect uno &&
+ diff -u expect uno &&
! test -f one &&
git diff --cached >current &&
! test -s current
git diff master:one :3:uno |
sed -e "1,/^@@/d" -e "/^ /d" -e "s/^-/d/" -e "s/^+/a/" >current &&
fill d2 aT d7 aS >expect &&
- diff current expect &&
+ diff -u current expect &&
git diff --cached two >current &&
! test -s current
'
HEAD is now at 7329388... Initial A one, A two
EOF
) &&
- git diff messages.expect messages &&
+ diff -u messages.expect messages &&
H=$(git rev-parse --verify HEAD) &&
M=$(git show-ref -s --verify refs/heads/master) &&
test "z$H" = "z$M" &&
fi
'
+test_expect_success 'checkout to detach HEAD with :/message' '
+
+ git checkout -f master && git clean -f &&
+ git checkout ":/Initial" &&
+ H=$(git rev-parse --verify HEAD) &&
+ M=$(git show-ref -s --verify refs/heads/master) &&
+ test "z$H" = "z$M" &&
+ if git symbolic-ref HEAD >/dev/null 2>&1
+ then
+ echo "OOPS, HEAD is still symbolic???"
+ false
+ else
+ : happy
+ fi
+'
+
test_expect_success 'checkout to detach HEAD with HEAD^0' '
git checkout -f master && git clean -f &&
'
+ test_expect_success 'switch branches while in subdirectory' '
+
+ git reset --hard &&
+ git checkout master &&
+
+ mkdir subs &&
+ (
+ cd subs &&
+ git checkout side
+ ) &&
+ ! test -f subs/one &&
+ rm -fr subs
+
+ '
+
+ test_expect_success 'checkout specific path while in subdirectory' '
+
+ git reset --hard &&
+ git checkout side &&
+ mkdir subs &&
+ >subs/bero &&
+ git add subs/bero &&
+ git commit -m "add subs/bero" &&
+
+ git checkout master &&
+ mkdir -p subs &&
+ (
+ cd subs &&
+ git checkout side -- bero
+ ) &&
+ test -f subs/bero
+
+ '
+
test_done
int any_dirs = 0;
char *cache_name;
int ce_stage;
+ int skip_entry = 0;
/* Find the first name in the input. */
#if DBRT_DEBUG > 1
if (first)
- printf("index %s\n", first);
+ fprintf(stderr, "index %s\n", first);
#endif
for (i = 0; i < len; i++) {
if (!posns[i] || posns[i] == df_conflict_list)
continue;
#if DBRT_DEBUG > 1
- printf("%d %s\n", i + 1, posns[i]->name);
+ fprintf(stderr, "%d %s\n", i + 1, posns[i]->name);
#endif
if (!first || entcmp(first, firstdir,
posns[i]->name,
any_files = 1;
src[0] = active_cache[o->pos];
remove = o->pos;
+ if (o->skip_unmerged && ce_stage(src[0]))
+ skip_entry = 1;
}
for (i = 0; i < len; i++) {
continue;
}
+ if (skip_entry) {
+ subposns[i] = df_conflict_list;
+ posns[i] = posns[i]->next;
+ continue;
+ }
+
if (!o->merge)
ce_stage = 0;
else if (i + 1 < o->head_idx)
posns[i] = posns[i]->next;
}
if (any_files) {
- if (o->merge) {
+ if (skip_entry) {
+ o->pos++;
+ while (o->pos < active_nr &&
+ !strcmp(active_cache[o->pos]->name,
+ src[0]->name))
+ o->pos++;
+ } else if (o->merge) {
int ret;
#if DBRT_DEBUG > 1
- printf("%s:\n", first);
+ fprintf(stderr, "%s:\n", first);
for (i = 0; i < src_size; i++) {
- printf(" %d ", i);
+ fprintf(stderr, " %d ", i);
if (src[i])
- printf("%s\n", sha1_to_hex(src[i]->sha1));
+ fprintf(stderr, "%06x %s\n", src[i]->ce_mode, sha1_to_hex(src[i]->sha1));
else
- printf("\n");
+ fprintf(stderr, "\n");
}
#endif
ret = o->fn(src, o, remove);
+ if (ret < 0)
+ return ret;
#if DBRT_DEBUG > 1
- printf("Added %d entries\n", ret);
+ fprintf(stderr, "Added %d entries\n", ret);
#endif
o->pos += ret;
} else {
}
static struct checkout state;
- static void check_updates(struct cache_entry **src, int nr,
- struct unpack_trees_options *o)
+ static void check_updates(struct unpack_trees_options *o)
{
unsigned cnt = 0, total = 0;
struct progress *progress = NULL;
char last_symlink[PATH_MAX];
+ int i;
if (o->update && o->verbose_update) {
- for (total = cnt = 0; cnt < nr; cnt++) {
- struct cache_entry *ce = src[cnt];
+ for (total = cnt = 0; cnt < active_nr; cnt++) {
+ struct cache_entry *ce = active_cache[cnt];
if (ce->ce_flags & (CE_UPDATE | CE_REMOVE))
total++;
}
progress = start_progress_delay("Checking out files",
- total, 50, 2);
+ total, 50, 1);
cnt = 0;
}
*last_symlink = '\0';
- while (nr--) {
- struct cache_entry *ce = *src++;
+ for (i = 0; i < active_nr; i++) {
+ struct cache_entry *ce = active_cache[i];
if (ce->ce_flags & (CE_UPDATE | CE_REMOVE))
display_progress(progress, ++cnt);
if (ce->ce_flags & CE_REMOVE) {
if (o->update)
unlink_entry(ce->name, last_symlink);
+ remove_cache_entry_at(i);
+ i--;
continue;
}
if (ce->ce_flags & CE_UPDATE) {
posns[i] = create_tree_entry_list(t+i);
if (unpack_trees_rec(posns, len, o->prefix ? o->prefix : "",
- o, &df_conflict_list))
+ o, &df_conflict_list)) {
+ if (o->gently) {
+ discard_cache();
+ read_cache();
+ }
return -1;
+ }
}
- if (o->trivial_merges_only && o->nontrivial_merge)
- die("Merge requires file-level merging");
+ if (o->trivial_merges_only && o->nontrivial_merge) {
+ if (o->gently) {
+ discard_cache();
+ read_cache();
+ }
+ return o->gently ? -1 :
+ error("Merge requires file-level merging");
+ }
- check_updates(active_cache, active_nr, o);
+ check_updates(o);
return 0;
}
/* Here come the merge functions */
- static void reject_merge(struct cache_entry *ce)
+ static int reject_merge(struct cache_entry *ce)
{
- die("Entry '%s' would be overwritten by merge. Cannot merge.",
- ce->name);
+ return error("Entry '%s' would be overwritten by merge. Cannot merge.",
+ ce->name);
}
static int same(struct cache_entry *a, struct cache_entry *b)
* When a CE gets turned into an unmerged entry, we
* want it to be up-to-date
*/
- static void verify_uptodate(struct cache_entry *ce,
+ static int verify_uptodate(struct cache_entry *ce,
struct unpack_trees_options *o)
{
struct stat st;
if (o->index_only || o->reset)
- return;
+ return 0;
if (!lstat(ce->name, &st)) {
unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID);
if (!changed)
- return;
+ return 0;
/*
* NEEDSWORK: the current default policy is to allow
* submodule to be out of sync wrt the supermodule
* checked out.
*/
if (S_ISGITLINK(ce->ce_mode))
- return;
+ return 0;
errno = 0;
}
if (errno == ENOENT)
- return;
- die("Entry '%s' not uptodate. Cannot merge.", ce->name);
+ return 0;
+ return o->gently ? -1 :
+ error("Entry '%s' not uptodate. Cannot merge.", ce->name);
}
static void invalidate_ce_path(struct cache_entry *ce)
* ce->name is an entry in the subdirectory.
*/
if (!ce_stage(ce)) {
- verify_uptodate(ce, o);
+ if (verify_uptodate(ce, o))
+ return -1;
ce->ce_flags |= CE_REMOVE;
}
cnt++;
d.exclude_per_dir = o->dir->exclude_per_dir;
i = read_directory(&d, ce->name, pathbuf, namelen+1, NULL);
if (i)
- die("Updating '%s' would lose untracked files in it",
- ce->name);
+ return o->gently ? -1 :
+ error("Updating '%s' would lose untracked files in it",
+ ce->name);
free(pathbuf);
return cnt;
}
* We do not want to remove or overwrite a working tree file that
* is not tracked, unless it is ignored.
*/
- static void verify_absent(struct cache_entry *ce, const char *action,
- struct unpack_trees_options *o)
+ static int verify_absent(struct cache_entry *ce, const char *action,
+ struct unpack_trees_options *o)
{
struct stat st;
if (o->index_only || o->reset || !o->update)
- return;
+ return 0;
if (has_symlink_leading_path(ce->name, NULL))
- return;
+ return 0;
if (!lstat(ce->name, &st)) {
int cnt;
+ int dtype = ce_to_dtype(ce);
- if (o->dir && excluded(o->dir, ce->name))
+ if (o->dir && excluded(o->dir, ce->name, &dtype))
/*
* ce->name is explicitly excluded, so it is Ok to
* overwrite it.
*/
- return;
+ return 0;
if (S_ISDIR(st.st_mode)) {
/*
* We are checking out path "foo" and
* deleted entries here.
*/
o->pos += cnt;
- return;
+ return 0;
}
/*
if (0 <= cnt) {
struct cache_entry *ce = active_cache[cnt];
if (ce->ce_flags & CE_REMOVE)
- return;
+ return 0;
}
- die("Untracked working tree file '%s' "
- "would be %s by merge.", ce->name, action);
+ return o->gently ? -1 :
+ error("Untracked working tree file '%s' "
+ "would be %s by merge.", ce->name, action);
}
+ return 0;
}
static int merged_entry(struct cache_entry *merge, struct cache_entry *old,
* a match.
*/
if (same(old, merge)) {
- memcpy(merge, old, offsetof(struct cache_entry, name));
+ copy_cache_entry(merge, old);
} else {
- verify_uptodate(old, o);
+ if (verify_uptodate(old, o))
+ return -1;
invalidate_ce_path(old);
}
}
else {
- verify_absent(merge, "overwritten", o);
+ if (verify_absent(merge, "overwritten", o))
+ return -1;
invalidate_ce_path(merge);
}
static int deleted_entry(struct cache_entry *ce, struct cache_entry *old,
struct unpack_trees_options *o)
{
- if (old)
- verify_uptodate(old, o);
- else
- verify_absent(ce, "removed", o);
+ if (old) {
+ if (verify_uptodate(old, o))
+ return -1;
+ } else
+ if (verify_absent(ce, "removed", o))
+ return -1;
ce->ce_flags |= CE_REMOVE;
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
invalidate_ce_path(ce);
/* #14, #14ALT, #2ALT */
if (remote && !df_conflict_head && head_match && !remote_match) {
if (index && !same(index, remote) && !same(index, head))
- reject_merge(index);
+ return o->gently ? -1 : reject_merge(index);
return merged_entry(remote, index, o);
}
/*
* If we have an entry in the index cache, then we want to
* make sure that it matches head.
*/
- if (index && !same(index, head)) {
- reject_merge(index);
- }
+ if (index && !same(index, head))
+ return o->gently ? -1 : reject_merge(index);
if (head) {
/* #5ALT, #15 */
remove_entry(remove);
if (index)
return deleted_entry(index, index, o);
- else if (ce && !head_deleted)
- verify_absent(ce, "removed", o);
+ else if (ce && !head_deleted) {
+ if (verify_absent(ce, "removed", o))
+ return -1;
+ }
return 0;
}
/*
* conflict resolution files.
*/
if (index) {
- verify_uptodate(index, o);
+ if (verify_uptodate(index, o))
+ return -1;
}
remove_entry(remove);
/* all other failures */
remove_entry(remove);
if (oldtree)
- reject_merge(oldtree);
+ return o->gently ? -1 : reject_merge(oldtree);
if (current)
- reject_merge(current);
+ return o->gently ? -1 : reject_merge(current);
if (newtree)
- reject_merge(newtree);
+ return o->gently ? -1 : reject_merge(newtree);
return -1;
}
}
return error("Cannot do a bind merge of %d trees\n",
o->merge_size);
if (a && old)
- die("Entry '%s' overlaps. Cannot bind.", a->name);
+ return o->gently ? -1 :
+ error("Entry '%s' overlaps. Cannot bind.", a->name);
if (!a)
return keep_entry(old, o);
else