* js/mv:
  builtin git-mv: support moving directories
  Make git-mv a builtin
  Extract helper bits from c-merge-recursive work
This commit is contained in:
Junio C Hamano 2006-07-30 13:24:48 -07:00
Родитель 2dcb927f37 ac64a72207
Коммит 522a98caa5
11 изменённых файлов: 522 добавлений и 340 удалений

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@ -151,7 +151,7 @@ SCRIPT_PERL = \
git-archimport.perl git-cvsimport.perl git-relink.perl \
git-shortlog.perl git-rerere.perl \
git-annotate.perl git-cvsserver.perl \
git-svnimport.perl git-mv.perl git-cvsexportcommit.perl \
git-svnimport.perl git-cvsexportcommit.perl \
git-send-email.perl git-svn.perl
SCRIPT_PYTHON = \
@ -192,7 +192,7 @@ BUILT_INS = git-log$X git-whatchanged$X git-show$X git-update-ref$X \
git-read-tree$X git-commit-tree$X git-write-tree$X \
git-apply$X git-show-branch$X git-diff-files$X git-update-index$X \
git-diff-index$X git-diff-stages$X git-diff-tree$X git-cat-file$X \
git-fmt-merge-msg$X git-prune$X
git-fmt-merge-msg$X git-prune$X git-mv$X
# what 'all' will build and 'install' will install, in gitexecdir
ALL_PROGRAMS = $(PROGRAMS) $(SIMPLE_PROGRAMS) $(SCRIPTS)
@ -221,7 +221,7 @@ LIB_H = \
blob.h cache.h commit.h csum-file.h delta.h \
diff.h object.h pack.h pkt-line.h quote.h refs.h \
run-command.h strbuf.h tag.h tree.h git-compat-util.h revision.h \
tree-walk.h log-tree.h dir.h
tree-walk.h log-tree.h dir.h path-list.h
DIFF_OBJS = \
diff.o diff-lib.o diffcore-break.o diffcore-order.o \
@ -236,7 +236,7 @@ LIB_OBJS = \
server-info.o setup.o sha1_file.o sha1_name.o strbuf.o \
tag.o tree.o usage.o config.o environment.o ctype.o copy.o \
fetch-clone.o revision.o pager.o tree-walk.o xdiff-interface.o \
alloc.o merge-file.o $(DIFF_OBJS)
alloc.o merge-file.o path-list.o $(DIFF_OBJS)
BUILTIN_OBJS = \
builtin-log.o builtin-help.o builtin-count.o builtin-diff.o builtin-push.o \
@ -248,7 +248,8 @@ BUILTIN_OBJS = \
builtin-apply.o builtin-show-branch.o builtin-diff-files.o \
builtin-diff-index.o builtin-diff-stages.o builtin-diff-tree.o \
builtin-cat-file.o builtin-mailsplit.o builtin-stripspace.o \
builtin-update-ref.o builtin-fmt-merge-msg.o builtin-prune.o
builtin-update-ref.o builtin-fmt-merge-msg.o builtin-prune.o \
builtin-mv.o
GITLIBS = $(LIB_FILE) $(XDIFF_LIB)
LIBS = $(GITLIBS) -lz

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@ -82,45 +82,6 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec)
prune_directory(dir, pathspec, baselen);
}
static int add_file_to_index(const char *path, int verbose)
{
int size, namelen;
struct stat st;
struct cache_entry *ce;
if (lstat(path, &st))
die("%s: unable to stat (%s)", path, strerror(errno));
if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode))
die("%s: can only add regular files or symbolic links", path);
namelen = strlen(path);
size = cache_entry_size(namelen);
ce = xcalloc(1, size);
memcpy(ce->name, path, namelen);
ce->ce_flags = htons(namelen);
fill_stat_cache_info(ce, &st);
ce->ce_mode = create_ce_mode(st.st_mode);
if (!trust_executable_bit) {
/* If there is an existing entry, pick the mode bits
* from it.
*/
int pos = cache_name_pos(path, namelen);
if (pos >= 0)
ce->ce_mode = active_cache[pos]->ce_mode;
}
if (index_path(ce->sha1, path, &st, 1))
die("unable to index file %s", path);
if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD))
die("unable to add %s to index",path);
if (verbose)
printf("add '%s'\n", path);
cache_tree_invalidate_path(active_cache_tree, path);
return 0;
}
static struct lock_file lock_file;
int cmd_add(int argc, const char **argv, char **envp)
@ -159,7 +120,6 @@ int cmd_add(int argc, const char **argv, char **envp)
}
die(builtin_add_usage);
}
git_config(git_default_config);
pathspec = get_pathspec(prefix, argv + i);
fill_directory(&dir, pathspec);

298
builtin-mv.c Normal file
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@ -0,0 +1,298 @@
/*
* "git mv" builtin command
*
* Copyright (C) 2006 Johannes Schindelin
*/
#include <fnmatch.h>
#include "cache.h"
#include "builtin.h"
#include "dir.h"
#include "cache-tree.h"
#include "path-list.h"
static const char builtin_mv_usage[] =
"git-mv [-n] [-f] (<source> <destination> | [-k] <source>... <destination>)";
static const char **copy_pathspec(const char *prefix, const char **pathspec,
int count, int base_name)
{
const char **result = xmalloc((count + 1) * sizeof(const char *));
memcpy(result, pathspec, count * sizeof(const char *));
result[count] = NULL;
if (base_name) {
int i;
for (i = 0; i < count; i++) {
const char *last_slash = strrchr(result[i], '/');
if (last_slash)
result[i] = last_slash + 1;
}
}
return get_pathspec(prefix, result);
}
static void show_list(const char *label, struct path_list *list)
{
if (list->nr > 0) {
int i;
printf("%s", label);
for (i = 0; i < list->nr; i++)
printf("%s%s", i > 0 ? ", " : "", list->items[i].path);
putchar('\n');
}
}
static const char *add_slash(const char *path)
{
int len = strlen(path);
if (path[len - 1] != '/') {
char *with_slash = xmalloc(len + 2);
memcpy(with_slash, path, len);
strcat(with_slash + len, "/");
return with_slash;
}
return path;
}
static struct lock_file lock_file;
int cmd_mv(int argc, const char **argv, char **envp)
{
int i, newfd, count;
int verbose = 0, show_only = 0, force = 0, ignore_errors = 0;
const char *prefix = setup_git_directory();
const char **source, **destination, **dest_path;
enum update_mode { BOTH = 0, WORKING_DIRECTORY, INDEX } *modes;
struct stat st;
struct path_list overwritten = {NULL, 0, 0, 0};
struct path_list src_for_dst = {NULL, 0, 0, 0};
struct path_list added = {NULL, 0, 0, 0};
struct path_list deleted = {NULL, 0, 0, 0};
struct path_list changed = {NULL, 0, 0, 0};
git_config(git_default_config);
newfd = hold_lock_file_for_update(&lock_file, get_index_file());
if (newfd < 0)
die("unable to create new index file");
if (read_cache() < 0)
die("index file corrupt");
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (arg[0] != '-')
break;
if (!strcmp(arg, "--")) {
i++;
break;
}
if (!strcmp(arg, "-n")) {
show_only = 1;
continue;
}
if (!strcmp(arg, "-f")) {
force = 1;
continue;
}
if (!strcmp(arg, "-k")) {
ignore_errors = 1;
continue;
}
die(builtin_mv_usage);
}
count = argc - i - 1;
if (count < 1)
usage(builtin_mv_usage);
source = copy_pathspec(prefix, argv + i, count, 0);
modes = xcalloc(count, sizeof(enum update_mode));
dest_path = copy_pathspec(prefix, argv + argc - 1, 1, 0);
if (!lstat(dest_path[0], &st) &&
S_ISDIR(st.st_mode)) {
dest_path[0] = add_slash(dest_path[0]);
destination = copy_pathspec(dest_path[0], argv + i, count, 1);
} else {
if (count != 1)
usage(builtin_mv_usage);
destination = dest_path;
}
/* Checking */
for (i = 0; i < count; i++) {
const char *bad = NULL;
if (show_only)
printf("Checking rename of '%s' to '%s'\n",
source[i], destination[i]);
if (lstat(source[i], &st) < 0)
bad = "bad source";
if (S_ISDIR(st.st_mode)) {
const char *dir = source[i], *dest_dir = destination[i];
int first, last, len = strlen(dir);
if (lstat(dest_dir, &st) == 0) {
bad = "cannot move directory over file";
goto next;
}
modes[i] = WORKING_DIRECTORY;
first = cache_name_pos(source[i], len);
if (first >= 0)
die ("Huh? %s/ is in index?", dir);
first = -1 - first;
for (last = first; last < active_nr; last++) {
const char *path = active_cache[last]->name;
if (strncmp(path, dir, len) || path[len] != '/')
break;
}
if (last - first < 1)
bad = "source directory is empty";
else if (!bad) {
int j, dst_len = strlen(dest_dir);
if (last - first > 0) {
source = realloc(source,
(count + last - first)
* sizeof(char *));
destination = realloc(destination,
(count + last - first)
* sizeof(char *));
modes = realloc(modes,
(count + last - first)
* sizeof(enum update_mode));
}
dest_dir = add_slash(dest_dir);
for (j = 0; j < last - first; j++) {
const char *path =
active_cache[first + j]->name;
source[count + j] = path;
destination[count + j] =
prefix_path(dest_dir, dst_len,
path + len);
modes[count + j] = INDEX;
}
count += last - first;
}
goto next;
}
if (!bad && lstat(destination[i], &st) == 0) {
bad = "destination exists";
if (force) {
/*
* only files can overwrite each other:
* check both source and destination
*/
if (S_ISREG(st.st_mode)) {
fprintf(stderr, "Warning: %s;"
" will overwrite!\n",
bad);
bad = NULL;
path_list_insert(destination[i],
&overwritten);
} else
bad = "Cannot overwrite";
}
}
if (!bad &&
!strncmp(destination[i], source[i], strlen(source[i])))
bad = "can not move directory into itself";
if (!bad && cache_name_pos(source[i], strlen(source[i])) < 0)
bad = "not under version control";
if (!bad) {
if (path_list_has_path(&src_for_dst, destination[i]))
bad = "multiple sources for the same target";
else
path_list_insert(destination[i], &src_for_dst);
}
next:
if (bad) {
if (ignore_errors) {
if (--count > 0) {
memmove(source + i, source + i + 1,
(count - i) * sizeof(char *));
memmove(destination + i,
destination + i + 1,
(count - i) * sizeof(char *));
}
} else
die ("%s, source=%s, destination=%s",
bad, source[i], destination[i]);
}
}
for (i = 0; i < count; i++) {
if (show_only || verbose)
printf("Renaming %s to %s\n",
source[i], destination[i]);
if (!show_only && modes[i] != INDEX &&
rename(source[i], destination[i]) < 0 &&
!ignore_errors)
die ("renaming %s failed: %s",
source[i], strerror(errno));
if (modes[i] == WORKING_DIRECTORY)
continue;
if (cache_name_pos(source[i], strlen(source[i])) >= 0) {
path_list_insert(source[i], &deleted);
/* destination can be a directory with 1 file inside */
if (path_list_has_path(&overwritten, destination[i]))
path_list_insert(destination[i], &changed);
else
path_list_insert(destination[i], &added);
} else
path_list_insert(destination[i], &added);
}
if (show_only) {
show_list("Changed : ", &changed);
show_list("Adding : ", &added);
show_list("Deleting : ", &deleted);
} else {
for (i = 0; i < changed.nr; i++) {
const char *path = changed.items[i].path;
int i = cache_name_pos(path, strlen(path));
struct cache_entry *ce = active_cache[i];
if (i < 0)
die ("Huh? Cache entry for %s unknown?", path);
refresh_cache_entry(ce, 0);
}
for (i = 0; i < added.nr; i++) {
const char *path = added.items[i].path;
add_file_to_index(path, verbose);
}
for (i = 0; i < deleted.nr; i++) {
const char *path = deleted.items[i].path;
remove_file_from_cache(path);
}
if (active_cache_changed) {
if (write_cache(newfd, active_cache, active_nr) ||
close(newfd) ||
commit_lock_file(&lock_file))
die("Unable to write new index file");
}
}
return 0;
}

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@ -52,6 +52,7 @@ extern int cmd_rev_parse(int argc, const char **argv, char **envp);
extern int cmd_update_index(int argc, const char **argv, char **envp);
extern int cmd_update_ref(int argc, const char **argv, char **envp);
extern int cmd_fmt_merge_msg(int argc, const char **argv, char **envp);
extern int cmd_mv(int argc, const char **argv, char **envp);
extern int cmd_write_tree(int argc, const char **argv, char **envp);
extern int write_tree(unsigned char *sha1, int missing_ok, const char *prefix);

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@ -115,6 +115,7 @@ static inline unsigned int create_ce_mode(unsigned int mode)
extern struct cache_entry **active_cache;
extern unsigned int active_nr, active_alloc, active_cache_changed;
extern struct cache_tree *active_cache_tree;
extern int cache_errno;
#define GIT_DIR_ENVIRONMENT "GIT_DIR"
#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
@ -142,6 +143,7 @@ extern void verify_non_filename(const char *prefix, const char *name);
/* Initialize and use the cache information */
extern int read_cache(void);
extern int read_cache_from(const char *path);
extern int write_cache(int newfd, struct cache_entry **cache, int entries);
extern int verify_path(const char *path);
extern int cache_name_pos(const char *name, int namelen);
@ -149,8 +151,10 @@ extern int cache_name_pos(const char *name, int namelen);
#define ADD_CACHE_OK_TO_REPLACE 2 /* Ok to replace file/directory */
#define ADD_CACHE_SKIP_DFCHECK 4 /* Ok to skip DF conflict checks */
extern int add_cache_entry(struct cache_entry *ce, int option);
extern struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really);
extern int remove_cache_entry_at(int pos);
extern int remove_file_from_cache(const char *path);
extern int add_file_to_index(const char *path, int verbose);
extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
extern int ce_match_stat(struct cache_entry *ce, struct stat *st, int);
extern int ce_modified(struct cache_entry *ce, struct stat *st, int);

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@ -1,250 +0,0 @@
#!/usr/bin/perl
#
# Copyright 2005, Ryan Anderson <ryan@michonline.com>
# Josef Weidendorfer <Josef.Weidendorfer@gmx.de>
#
# This file is licensed under the GPL v2, or a later version
# at the discretion of Linus Torvalds.
use warnings;
use strict;
use Getopt::Std;
sub usage() {
print <<EOT;
$0 [-f] [-n] <source> <destination>
$0 [-f] [-n] [-k] <source> ... <destination directory>
EOT
exit(1);
}
our ($opt_n, $opt_f, $opt_h, $opt_k, $opt_v);
getopts("hnfkv") || usage;
usage() if $opt_h;
@ARGV >= 1 or usage;
my $GIT_DIR = `git rev-parse --git-dir`;
exit 1 if $?; # rev-parse would have given "not a git dir" message.
chomp($GIT_DIR);
my (@srcArgs, @dstArgs, @srcs, @dsts);
my ($src, $dst, $base, $dstDir);
# remove any trailing slash in arguments
for (@ARGV) { s/\/*$//; }
my $argCount = scalar @ARGV;
if (-d $ARGV[$argCount-1]) {
$dstDir = $ARGV[$argCount-1];
@srcArgs = @ARGV[0..$argCount-2];
foreach $src (@srcArgs) {
$base = $src;
$base =~ s/^.*\///;
$dst = "$dstDir/". $base;
push @dstArgs, $dst;
}
}
else {
if ($argCount < 2) {
print "Error: need at least two arguments\n";
exit(1);
}
if ($argCount > 2) {
print "Error: moving to directory '"
. $ARGV[$argCount-1]
. "' not possible; not existing\n";
exit(1);
}
@srcArgs = ($ARGV[0]);
@dstArgs = ($ARGV[1]);
$dstDir = "";
}
my $subdir_prefix = `git rev-parse --show-prefix`;
chomp($subdir_prefix);
# run in git base directory, so that git-ls-files lists all revisioned files
chdir "$GIT_DIR/..";
# normalize paths, needed to compare against versioned files and update-index
# also, this is nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
for (@srcArgs, @dstArgs) {
# prepend git prefix as we run from base directory
$_ = $subdir_prefix.$_;
s|^\./||;
s|/\./|/| while (m|/\./|);
s|//+|/|g;
# Also "a/b/../c" ==> "a/c"
1 while (s,(^|/)[^/]+/\.\./,$1,);
}
my (@allfiles,@srcfiles,@dstfiles);
my $safesrc;
my (%overwritten, %srcForDst);
$/ = "\0";
open(F, 'git-ls-files -z |')
or die "Failed to open pipe from git-ls-files: " . $!;
@allfiles = map { chomp; $_; } <F>;
close(F);
my ($i, $bad);
while(scalar @srcArgs > 0) {
$src = shift @srcArgs;
$dst = shift @dstArgs;
$bad = "";
for ($src, $dst) {
# Be nicer to end-users by doing ".//a/./b/.//./c" ==> "a/b/c"
s|^\./||;
s|/\./|/| while (m|/\./|);
s|//+|/|g;
# Also "a/b/../c" ==> "a/c"
1 while (s,(^|/)[^/]+/\.\./,$1,);
}
if ($opt_v) {
print "Checking rename of '$src' to '$dst'\n";
}
unless (-f $src || -l $src || -d $src) {
$bad = "bad source '$src'";
}
$safesrc = quotemeta($src);
@srcfiles = grep /^$safesrc(\/|$)/, @allfiles;
$overwritten{$dst} = 0;
if (($bad eq "") && -e $dst) {
$bad = "destination '$dst' already exists";
if ($opt_f) {
# only files can overwrite each other: check both source and destination
if (-f $dst && (scalar @srcfiles == 1)) {
print "Warning: $bad; will overwrite!\n";
$bad = "";
$overwritten{$dst} = 1;
}
else {
$bad = "Can not overwrite '$src' with '$dst'";
}
}
}
if (($bad eq "") && ($dst =~ /^$safesrc\//)) {
$bad = "can not move directory '$src' into itself";
}
if ($bad eq "") {
if (scalar @srcfiles == 0) {
$bad = "'$src' not under version control";
}
}
if ($bad eq "") {
if (defined $srcForDst{$dst}) {
$bad = "can not move '$src' to '$dst'; already target of ";
$bad .= "'".$srcForDst{$dst}."'";
}
else {
$srcForDst{$dst} = $src;
}
}
if ($bad ne "") {
if ($opt_k) {
print "Warning: $bad; skipping\n";
next;
}
print "Error: $bad\n";
exit(1);
}
push @srcs, $src;
push @dsts, $dst;
}
# Final pass: rename/move
my (@deletedfiles,@addedfiles,@changedfiles);
$bad = "";
while(scalar @srcs > 0) {
$src = shift @srcs;
$dst = shift @dsts;
if ($opt_n || $opt_v) { print "Renaming $src to $dst\n"; }
if (!$opt_n) {
if (!rename($src,$dst)) {
$bad = "renaming '$src' failed: $!";
if ($opt_k) {
print "Warning: skipped: $bad\n";
$bad = "";
next;
}
last;
}
}
$safesrc = quotemeta($src);
@srcfiles = grep /^$safesrc(\/|$)/, @allfiles;
@dstfiles = @srcfiles;
s/^$safesrc(\/|$)/$dst$1/ for @dstfiles;
push @deletedfiles, @srcfiles;
if (scalar @srcfiles == 1) {
# $dst can be a directory with 1 file inside
if ($overwritten{$dst} ==1) {
push @changedfiles, $dstfiles[0];
} else {
push @addedfiles, $dstfiles[0];
}
}
else {
push @addedfiles, @dstfiles;
}
}
if ($opt_n) {
if (@changedfiles) {
print "Changed : ". join(", ", @changedfiles) ."\n";
}
if (@addedfiles) {
print "Adding : ". join(", ", @addedfiles) ."\n";
}
if (@deletedfiles) {
print "Deleting : ". join(", ", @deletedfiles) ."\n";
}
}
else {
if (@changedfiles) {
open(H, "| git-update-index -z --stdin")
or die "git-update-index failed to update changed files with code $!\n";
foreach my $fileName (@changedfiles) {
print H "$fileName\0";
}
close(H);
}
if (@addedfiles) {
open(H, "| git-update-index --add -z --stdin")
or die "git-update-index failed to add new names with code $!\n";
foreach my $fileName (@addedfiles) {
print H "$fileName\0";
}
close(H);
}
if (@deletedfiles) {
open(H, "| git-update-index --remove -z --stdin")
or die "git-update-index failed to remove old names with code $!\n";
foreach my $fileName (@deletedfiles) {
print H "$fileName\0";
}
close(H);
}
}
if ($bad ne "") {
print "Error: $bad\n";
exit(1);
}

1
git.c
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@ -259,6 +259,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
{ "update-ref", cmd_update_ref },
{ "fmt-merge-msg", cmd_fmt_merge_msg },
{ "prune", cmd_prune },
{ "mv", cmd_mv },
};
int i;

105
path-list.c Normal file
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@ -0,0 +1,105 @@
#include <stdio.h>
#include "cache.h"
#include "path-list.h"
/* if there is no exact match, point to the index where the entry could be
* inserted */
static int get_entry_index(const struct path_list *list, const char *path,
int *exact_match)
{
int left = -1, right = list->nr;
while (left + 1 < right) {
int middle = (left + right) / 2;
int compare = strcmp(path, list->items[middle].path);
if (compare < 0)
right = middle;
else if (compare > 0)
left = middle;
else {
*exact_match = 1;
return middle;
}
}
*exact_match = 0;
return right;
}
/* returns -1-index if already exists */
static int add_entry(struct path_list *list, const char *path)
{
int exact_match;
int index = get_entry_index(list, path, &exact_match);
if (exact_match)
return -1 - index;
if (list->nr + 1 >= list->alloc) {
list->alloc += 32;
list->items = xrealloc(list->items, list->alloc
* sizeof(struct path_list_item));
}
if (index < list->nr)
memmove(list->items + index + 1, list->items + index,
(list->nr - index)
* sizeof(struct path_list_item));
list->items[index].path = list->strdup_paths ?
strdup(path) : (char *)path;
list->items[index].util = NULL;
list->nr++;
return index;
}
struct path_list_item *path_list_insert(const char *path, struct path_list *list)
{
int index = add_entry(list, path);
if (index < 0)
index = 1 - index;
return list->items + index;
}
int path_list_has_path(const struct path_list *list, const char *path)
{
int exact_match;
get_entry_index(list, path, &exact_match);
return exact_match;
}
struct path_list_item *path_list_lookup(const char *path, struct path_list *list)
{
int exact_match, i = get_entry_index(list, path, &exact_match);
if (!exact_match)
return NULL;
return list->items + i;
}
void path_list_clear(struct path_list *list, int free_items)
{
if (list->items) {
int i;
if (free_items)
for (i = 0; i < list->nr; i++) {
if (list->strdup_paths)
free(list->items[i].path);
if (list->items[i].util)
free(list->items[i].util);
}
free(list->items);
}
list->items = NULL;
list->nr = list->alloc = 0;
}
void print_path_list(const char *text, const struct path_list *p)
{
int i;
if ( text )
printf("%s\n", text);
for (i = 0; i < p->nr; i++)
printf("%s:%p\n", p->items[i].path, p->items[i].util);
}

22
path-list.h Normal file
Просмотреть файл

@ -0,0 +1,22 @@
#ifndef _PATH_LIST_H_
#define _PATH_LIST_H_
struct path_list_item {
char *path;
void *util;
};
struct path_list
{
struct path_list_item *items;
unsigned int nr, alloc;
unsigned int strdup_paths:1;
};
void print_path_list(const char *text, const struct path_list *p);
int path_list_has_path(const struct path_list *list, const char *path);
void path_list_clear(struct path_list *list, int free_items);
struct path_list_item *path_list_insert(const char *path, struct path_list *list);
struct path_list_item *path_list_lookup(const char *path, struct path_list *list);
#endif /* _PATH_LIST_H_ */

Просмотреть файл

@ -24,6 +24,11 @@ unsigned int active_nr = 0, active_alloc = 0, active_cache_changed = 0;
struct cache_tree *active_cache_tree = NULL;
int cache_errno = 0;
static void *cache_mmap = NULL;
static size_t cache_mmap_size = 0;
/*
* This only updates the "non-critical" parts of the directory
* cache, ie the parts that aren't tracked by GIT, and only used
@ -314,6 +319,45 @@ int remove_file_from_cache(const char *path)
return 0;
}
int add_file_to_index(const char *path, int verbose)
{
int size, namelen;
struct stat st;
struct cache_entry *ce;
if (lstat(path, &st))
die("%s: unable to stat (%s)", path, strerror(errno));
if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode))
die("%s: can only add regular files or symbolic links", path);
namelen = strlen(path);
size = cache_entry_size(namelen);
ce = xcalloc(1, size);
memcpy(ce->name, path, namelen);
ce->ce_flags = htons(namelen);
fill_stat_cache_info(ce, &st);
ce->ce_mode = create_ce_mode(st.st_mode);
if (!trust_executable_bit) {
/* If there is an existing entry, pick the mode bits
* from it.
*/
int pos = cache_name_pos(path, namelen);
if (pos >= 0)
ce->ce_mode = active_cache[pos]->ce_mode;
}
if (index_path(ce->sha1, path, &st, 1))
die("unable to index file %s", path);
if (add_cache_entry(ce, ADD_CACHE_OK_TO_ADD))
die("unable to add %s to index",path);
if (verbose)
printf("add '%s'\n", path);
cache_tree_invalidate_path(active_cache_tree, path);
return 0;
}
int ce_same_name(struct cache_entry *a, struct cache_entry *b)
{
int len = ce_namelen(a);
@ -577,22 +621,6 @@ int add_cache_entry(struct cache_entry *ce, int option)
return 0;
}
/* Three functions to allow overloaded pointer return; see linux/err.h */
static inline void *ERR_PTR(long error)
{
return (void *) error;
}
static inline long PTR_ERR(const void *ptr)
{
return (long) ptr;
}
static inline long IS_ERR(const void *ptr)
{
return (unsigned long)ptr > (unsigned long)-1000L;
}
/*
* "refresh" does not calculate a new sha1 file or bring the
* cache up-to-date for mode/content changes. But what it
@ -604,14 +632,16 @@ static inline long IS_ERR(const void *ptr)
* For example, you'd want to do this after doing a "git-read-tree",
* to link up the stat cache details with the proper files.
*/
static struct cache_entry *refresh_entry(struct cache_entry *ce, int really)
struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int really)
{
struct stat st;
struct cache_entry *updated;
int changed, size;
if (lstat(ce->name, &st) < 0)
return ERR_PTR(-errno);
if (lstat(ce->name, &st) < 0) {
cache_errno = errno;
return NULL;
}
changed = ce_match_stat(ce, &st, really);
if (!changed) {
@ -619,11 +649,13 @@ static struct cache_entry *refresh_entry(struct cache_entry *ce, int really)
!(ce->ce_flags & htons(CE_VALID)))
; /* mark this one VALID again */
else
return NULL;
return ce;
}
if (ce_modified(ce, &st, really))
return ERR_PTR(-EINVAL);
if (ce_modified(ce, &st, really)) {
cache_errno = EINVAL;
return NULL;
}
size = ce_size(ce);
updated = xmalloc(size);
@ -666,13 +698,13 @@ int refresh_cache(unsigned int flags)
continue;
}
new = refresh_entry(ce, really);
if (!new)
new = refresh_cache_entry(ce, really);
if (new == ce)
continue;
if (IS_ERR(new)) {
if (not_new && PTR_ERR(new) == -ENOENT)
if (!new) {
if (not_new && cache_errno == ENOENT)
continue;
if (really && PTR_ERR(new) == -EINVAL) {
if (really && cache_errno == EINVAL) {
/* If we are doing --really-refresh that
* means the index is not valid anymore.
*/
@ -728,40 +760,44 @@ static int read_index_extension(const char *ext, void *data, unsigned long sz)
}
int read_cache(void)
{
return read_cache_from(get_index_file());
}
/* remember to discard_cache() before reading a different cache! */
int read_cache_from(const char *path)
{
int fd, i;
struct stat st;
unsigned long size, offset;
void *map;
unsigned long offset;
struct cache_header *hdr;
errno = EBUSY;
if (active_cache)
if (cache_mmap)
return active_nr;
errno = ENOENT;
index_file_timestamp = 0;
fd = open(get_index_file(), O_RDONLY);
fd = open(path, O_RDONLY);
if (fd < 0) {
if (errno == ENOENT)
return 0;
die("index file open failed (%s)", strerror(errno));
}
size = 0; /* avoid gcc warning */
map = MAP_FAILED;
cache_mmap = MAP_FAILED;
if (!fstat(fd, &st)) {
size = st.st_size;
cache_mmap_size = st.st_size;
errno = EINVAL;
if (size >= sizeof(struct cache_header) + 20)
map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
if (cache_mmap_size >= sizeof(struct cache_header) + 20)
cache_mmap = mmap(NULL, cache_mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
}
close(fd);
if (map == MAP_FAILED)
if (cache_mmap == MAP_FAILED)
die("index file mmap failed (%s)", strerror(errno));
hdr = map;
if (verify_hdr(hdr, size) < 0)
hdr = cache_mmap;
if (verify_hdr(hdr, cache_mmap_size) < 0)
goto unmap;
active_nr = ntohl(hdr->hdr_entries);
@ -770,12 +806,12 @@ int read_cache(void)
offset = sizeof(*hdr);
for (i = 0; i < active_nr; i++) {
struct cache_entry *ce = (struct cache_entry *) ((char *) map + offset);
struct cache_entry *ce = (struct cache_entry *) ((char *) cache_mmap + offset);
offset = offset + ce_size(ce);
active_cache[i] = ce;
}
index_file_timestamp = st.st_mtime;
while (offset <= size - 20 - 8) {
while (offset <= cache_mmap_size - 20 - 8) {
/* After an array of active_nr index entries,
* there can be arbitrary number of extended
* sections, each of which is prefixed with
@ -783,10 +819,10 @@ int read_cache(void)
* in 4-byte network byte order.
*/
unsigned long extsize;
memcpy(&extsize, (char *) map + offset + 4, 4);
memcpy(&extsize, (char *) cache_mmap + offset + 4, 4);
extsize = ntohl(extsize);
if (read_index_extension(((const char *) map) + offset,
(char *) map + offset + 8,
if (read_index_extension(((const char *) cache_mmap) + offset,
(char *) cache_mmap + offset + 8,
extsize) < 0)
goto unmap;
offset += 8;
@ -795,7 +831,7 @@ int read_cache(void)
return active_nr;
unmap:
munmap(map, size);
munmap(cache_mmap, cache_mmap_size);
errno = EINVAL;
die("index file corrupt");
}

Просмотреть файл

@ -74,4 +74,8 @@ test_expect_success \
git-diff-tree -r -M --name-status HEAD^ HEAD | \
grep -E "^R100.+path2/README.+path1/path2/README"'
test_expect_failure \
'do not move directory over existing directory' \
'mkdir path0 && mkdir path0/path2 && git-mv path2 path0'
test_done