Merge branch 'lt/setup' into __/setup-n-mv

This merges the new built-in calling convention code into Johannes's
builtin-mv topic in order to resolve their conflicts early on.

Signed-off-by: Junio C Hamano <junkio@cox.net>

Documentation/git-daemon.txt

@@ -11,7 +11,7 @@ SYNOPSIS
 'git-daemon' [--verbose] [--syslog] [--inetd | --port=n] [--export-all]
              [--timeout=n] [--init-timeout=n] [--strict-paths]
              [--base-path=path] [--user-path | --user-path=path]
-	     [directory...]
+	     [--reuseaddr] [--detach] [--pid-file=file] [directory...]
 
 DESCRIPTION
 -----------
@@ -82,6 +82,17 @@ OPTIONS
 --verbose::
 	Log details about the incoming connections and requested files.
 
+--reuseaddr::
+	Use SO_REUSEADDR when binding the listening socket.
+	This allows the server to restart without waiting for
+	old connections to time out.
+
+--detach::
+	Detach from the shell. Implies --syslog.
+
+--pid-file=file::
+	Save the process id in 'file'.
+
 <directory>::
 	A directory to add to the whitelist of allowed directories. Unless
 	--strict-paths is specified this will also include subdirectories

Documentation/git-http-fetch.txt

@@ -8,7 +8,7 @@ git-http-fetch - downloads a remote git repository via HTTP
 
 SYNOPSIS
 --------
-'git-http-fetch' [-c] [-t] [-a] [-d] [-v] [-w filename] [--recover] <commit> <url>
+'git-http-fetch' [-c] [-t] [-a] [-d] [-v] [-w filename] [--recover] [--stdin] <commit> <url>
 
 DESCRIPTION
 -----------
@@ -33,6 +33,12 @@ commit-id::
         Writes the commit-id into the filename under $GIT_DIR/refs/<filename> on
         the local end after the transfer is complete.
 
+--stdin::
+	Instead of a commit id on the commandline (which is not expected in this
+	case), 'git-http-fetch' expects lines on stdin in the format
+
+		<commit-id>['\t'<filename-as-in--w>]
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>

Documentation/git-local-fetch.txt

@@ -29,6 +29,12 @@ OPTIONS
         Writes the commit-id into the filename under $GIT_DIR/refs/<filename> on
         the local end after the transfer is complete.
 
+--stdin::
+	Instead of a commit id on the commandline (which is not expected in this
+	case), 'git-local-fetch' expects lines on stdin in the format
+
+		<commit-id>['\t'<filename-as-in--w>]
+
 Author
 ------
 Written by Junio C Hamano <junkio@cox.net>

Documentation/git.txt

@@ -8,7 +8,8 @@ git - the stupid content tracker
 
 SYNOPSIS
 --------
-'git' [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ARGS]
+'git' [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate]
+	[--bare] [--git-dir=GIT_DIR] [--help] COMMAND [ARGS]
 
 DESCRIPTION
 -----------
@@ -41,6 +42,15 @@ OPTIONS
 	environment variable. If no path is given 'git' will print
 	the current setting and then exit.
 
+-p|--paginate::
+	Pipe all output into 'less' (or if set, $PAGER).
+
+--git-dir=<path>::
+	Set the path to the repository. This can also be controlled by
+	setting the GIT_DIR environment variable.
+
+--bare::
+	Same as --git-dir=`pwd`.
 
 FURTHER DOCUMENTATION
 ---------------------

Makefile

@@ -615,6 +615,8 @@ $(SIMPLE_PROGRAMS) : git-%$X : %.o
 	$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
 		$(LIB_FILE) $(SIMPLE_LIB)
 
+ssh-pull.o: ssh-fetch.c
+ssh-push.o: ssh-upload.c
 git-local-fetch$X: fetch.o
 git-ssh-fetch$X: rsh.o fetch.o
 git-ssh-upload$X: rsh.o

blame.c

@@ -834,7 +834,7 @@ int main(int argc, const char **argv)
 	}
 
 
-	init_revisions(&rev);
+	init_revisions(&rev, setup_git_directory());
 	rev.remove_empty_trees = 1;
 	rev.topo_order = 1;
 	rev.prune_fn = simplify_commit;

builtin-add.c

@@ -84,11 +84,10 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec)
 
 static struct lock_file lock_file;
 
-int cmd_add(int argc, const char **argv, char **envp)
+int cmd_add(int argc, const char **argv, const char *prefix)
 {
 	int i, newfd;
 	int verbose = 0, show_only = 0;
-	const char *prefix = setup_git_directory();
 	const char **pathspec;
 	struct dir_struct dir;
 

builtin-apply.c

@@ -120,7 +120,7 @@ struct fragment {
 struct patch {
 	char *new_name, *old_name, *def_name;
 	unsigned int old_mode, new_mode;
-	int is_rename, is_copy, is_new, is_delete, is_binary;
+	int is_rename, is_copy, is_new, is_delete, is_binary, is_reverse;
 #define BINARY_DELTA_DEFLATED 1
 #define BINARY_LITERAL_DEFLATED 2
 	unsigned long deflate_origlen;
@@ -1119,6 +1119,34 @@ static int parse_chunk(char *buffer, unsigned long size, struct patch *patch)
 	return offset + hdrsize + patchsize;
 }
 
+#define swap(a,b) myswap((a),(b),sizeof(a))
+
+#define myswap(a, b, size) do {		\
+	unsigned char mytmp[size];	\
+	memcpy(mytmp, &a, size);		\
+	memcpy(&a, &b, size);		\
+	memcpy(&b, mytmp, size);		\
+} while (0)
+
+static void reverse_patches(struct patch *p)
+{
+	for (; p; p = p->next) {
+		struct fragment *frag = p->fragments;
+
+		swap(p->new_name, p->old_name);
+		swap(p->new_mode, p->old_mode);
+		swap(p->is_new, p->is_delete);
+		swap(p->lines_added, p->lines_deleted);
+		swap(p->old_sha1_prefix, p->new_sha1_prefix);
+
+		for (; frag; frag = frag->next) {
+			swap(frag->newpos, frag->oldpos);
+			swap(frag->newlines, frag->oldlines);
+		}
+		p->is_reverse = !p->is_reverse;
+	}
+}
+
 static const char pluses[] = "++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++";
 static const char minuses[]= "----------------------------------------------------------------------";
 
@@ -1336,7 +1364,7 @@ static int apply_line(char *output, const char *patch, int plen)
 }
 
 static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag,
-	int inaccurate_eof)
+	int reverse, int inaccurate_eof)
 {
 	int match_beginning, match_end;
 	char *buf = desc->buffer;
@@ -1350,6 +1378,7 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag,
 	int pos, lines;
 
 	while (size > 0) {
+		char first;
 		int len = linelen(patch, size);
 		int plen;
 
@@ -1366,16 +1395,23 @@ static int apply_one_fragment(struct buffer_desc *desc, struct fragment *frag,
 		plen = len-1;
 		if (len < size && patch[len] == '\\')
 			plen--;
-		switch (*patch) {
+		first = *patch;
+		if (reverse) {
+			if (first == '-')
+				first = '+';
+			else if (first == '+')
+				first = '-';
+		}
+		switch (first) {
 		case ' ':
 		case '-':
 			memcpy(old + oldsize, patch + 1, plen);
 			oldsize += plen;
-			if (*patch == '-')
+			if (first == '-')
 				break;
 		/* Fall-through for ' ' */
 		case '+':
-			if (*patch != '+' || !no_add)
+			if (first != '+' || !no_add)
 				newsize += apply_line(new + newsize, patch,
 						      plen);
 			break;
@@ -1499,6 +1535,12 @@ static int apply_binary_fragment(struct buffer_desc *desc, struct patch *patch)
 	void *data;
 	void *result;
 
+	/* Binary patch is irreversible */
+	if (patch->is_reverse)
+		return error("cannot reverse-apply a binary patch to '%s'",
+			     patch->new_name
+			     ? patch->new_name : patch->old_name);
+
 	data = inflate_it(fragment->patch, fragment->size,
 			  patch->deflate_origlen);
 	if (!data)
@@ -1615,7 +1657,8 @@ static int apply_fragments(struct buffer_desc *desc, struct patch *patch)
 		return apply_binary(desc, patch);
 
 	while (frag) {
-		if (apply_one_fragment(desc, frag, patch->inaccurate_eof) < 0)
+		if (apply_one_fragment(desc, frag, patch->is_reverse,
+					patch->inaccurate_eof) < 0)
 			return error("patch failed: %s:%ld",
 				     name, frag->oldpos);
 		frag = frag->next;
@@ -2142,7 +2185,8 @@ static int use_patch(struct patch *p)
 	return 1;
 }
 
-static int apply_patch(int fd, const char *filename, int inaccurate_eof)
+static int apply_patch(int fd, const char *filename,
+		int reverse, int inaccurate_eof)
 {
 	unsigned long offset, size;
 	char *buffer = read_patch_file(fd, &size);
@@ -2162,6 +2206,8 @@ static int apply_patch(int fd, const char *filename, int inaccurate_eof)
 		nr = parse_chunk(buffer + offset, size, patch);
 		if (nr < 0)
 			break;
+		if (reverse)
+			reverse_patches(patch);
 		if (use_patch(patch)) {
 			patch_stats(patch);
 			*listp = patch;
@@ -2222,10 +2268,11 @@ static int git_apply_config(const char *var, const char *value)
 }
 
 
-int cmd_apply(int argc, const char **argv, char **envp)
+int cmd_apply(int argc, const char **argv, const char *prefix)
 {
 	int i;
 	int read_stdin = 1;
+	int reverse = 0;
 	int inaccurate_eof = 0;
 
 	const char *whitespace_option = NULL;
@@ -2236,7 +2283,7 @@ int cmd_apply(int argc, const char **argv, char **envp)
 		int fd;
 
 		if (!strcmp(arg, "-")) {
-			apply_patch(0, "<stdin>", inaccurate_eof);
+			apply_patch(0, "<stdin>", reverse, inaccurate_eof);
 			read_stdin = 0;
 			continue;
 		}
@@ -2313,6 +2360,10 @@ int cmd_apply(int argc, const char **argv, char **envp)
 			parse_whitespace_option(arg + 13);
 			continue;
 		}
+		if (!strcmp(arg, "-R") || !strcmp(arg, "--reverse")) {
+			reverse = 1;
+			continue;
+		}
 		if (!strcmp(arg, "--inaccurate-eof")) {
 			inaccurate_eof = 1;
 			continue;
@@ -2333,12 +2384,12 @@ int cmd_apply(int argc, const char **argv, char **envp)
 			usage(apply_usage);
 		read_stdin = 0;
 		set_default_whitespace_mode(whitespace_option);
-		apply_patch(fd, arg, inaccurate_eof);
+		apply_patch(fd, arg, reverse, inaccurate_eof);
 		close(fd);
 	}
 	set_default_whitespace_mode(whitespace_option);
 	if (read_stdin)
-		apply_patch(0, "<stdin>", inaccurate_eof);
+		apply_patch(0, "<stdin>", reverse, inaccurate_eof);
 	if (whitespace_error) {
 		if (squelch_whitespace_errors &&
 		    squelch_whitespace_errors < whitespace_error) {

builtin-cat-file.c

@@ -94,15 +94,14 @@ static int pprint_tag(const unsigned char *sha1, const char *buf, unsigned long
 	return 0;
 }
 
-int cmd_cat_file(int argc, const char **argv, char **envp)
+int cmd_cat_file(int argc, const char **argv, const char *prefix)
 {
 	unsigned char sha1[20];
 	char type[20];
 	void *buf;
 	unsigned long size;
 	int opt;
 
-	setup_git_directory();
 	git_config(git_default_config);
 	if (argc != 3)
 		usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>");

builtin-check-ref-format.c

@@ -6,7 +6,7 @@
 #include "refs.h"
 #include "builtin.h"
 
-int cmd_check_ref_format(int argc, const char **argv, char **envp)
+int cmd_check_ref_format(int argc, const char **argv, const char *prefix)
 {
 	if (argc != 2)
 		usage("git check-ref-format refname");

builtin-commit-tree.c

@@ -77,7 +77,7 @@ static int new_parent(int idx)
 	return 1;
 }
 
-int cmd_commit_tree(int argc, const char **argv, char **envp)
+int cmd_commit_tree(int argc, const char **argv, const char *prefix)
 {
 	int i;
 	int parents = 0;
@@ -88,8 +88,6 @@ int cmd_commit_tree(int argc, const char **argv, char **envp)
 	unsigned int size;
 
 	setup_ident();
-	setup_git_directory();
-
 	git_config(git_default_config);
 
 	if (argc < 2)

builtin-count.c

@@ -67,7 +67,7 @@ static void count_objects(DIR *d, char *path, int len, int verbose,
 	}
 }
 
-int cmd_count_objects(int ac, const char **av, char **ep)
+int cmd_count_objects(int ac, const char **av, const char *prefix)
 {
 	int i;
 	int verbose = 0;

builtin-diff-files.c

@@ -13,13 +13,13 @@ static const char diff_files_usage[] =
 "git-diff-files [-q] [-0/-1/2/3 |-c|--cc] [<common diff options>] [<path>...]"
 COMMON_DIFF_OPTIONS_HELP;
 
-int cmd_diff_files(int argc, const char **argv, char **envp)
+int cmd_diff_files(int argc, const char **argv, const char *prefix)
 {
 	struct rev_info rev;
 	int silent = 0;
 
+	init_revisions(&rev, prefix);
 	git_config(git_default_config); /* no "diff" UI options */
-	init_revisions(&rev);
 	rev.abbrev = 0;
 
 	argc = setup_revisions(argc, argv, &rev, NULL);

builtin-diff-index.c

@@ -9,14 +9,14 @@ static const char diff_cache_usage[] =
 "[<common diff options>] <tree-ish> [<path>...]"
 COMMON_DIFF_OPTIONS_HELP;
 
-int cmd_diff_index(int argc, const char **argv, char **envp)
+int cmd_diff_index(int argc, const char **argv, const char *prefix)
 {
 	struct rev_info rev;
 	int cached = 0;
 	int i;
 
+	init_revisions(&rev, prefix);
 	git_config(git_default_config); /* no "diff" UI options */
-	init_revisions(&rev);
 	rev.abbrev = 0;
 
 	argc = setup_revisions(argc, argv, &rev, NULL);

builtin-diff-stages.c

@@ -55,10 +55,9 @@ static void diff_stages(int stage1, int stage2, const char **pathspec)
 	}
 }
 
-int cmd_diff_stages(int ac, const char **av, char **envp)
+int cmd_diff_stages(int ac, const char **av, const char *prefix)
 {
 	int stage1, stage2;
-	const char *prefix = setup_git_directory();
 	const char **pathspec = NULL;
 
 	git_config(git_default_config); /* no "diff" UI options */