Revision 251df09be3af658404f5f5f670a013d5806645d4 authored by Matthieu Moy on 09 March 2011, 20:52:15 UTC, committed by Junio C Hamano on 09 March 2011, 22:28:24 UTC
The --max-count limit is implemented by counting revisions in get_revision(), but the -S and -G take effect later when running diff. Hence "--max-count=10 -Sfoo" meant "examine the 10 first revisions, and out of them, show only those changing the occurences of foo", not "show 10 revisions changing the occurences of foo". In case the commit isn't actually shown, cancel the decrement of max_count. Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent d0f7dcb
archive.c
#include "cache.h"
#include "commit.h"
#include "tree-walk.h"
#include "attr.h"
#include "archive.h"
#include "parse-options.h"
#include "unpack-trees.h"
static char const * const archive_usage[] = {
"git archive [options] <tree-ish> [<path>...]",
"git archive --list",
"git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [<path>...]",
"git archive --remote <repo> [--exec <cmd>] --list",
NULL
};
#define USES_ZLIB_COMPRESSION 1
static const struct archiver {
const char *name;
write_archive_fn_t write_archive;
unsigned int flags;
} archivers[] = {
{ "tar", write_tar_archive },
{ "zip", write_zip_archive, USES_ZLIB_COMPRESSION },
};
static void format_subst(const struct commit *commit,
const char *src, size_t len,
struct strbuf *buf)
{
char *to_free = NULL;
struct strbuf fmt = STRBUF_INIT;
struct pretty_print_context ctx = {0};
ctx.date_mode = DATE_NORMAL;
ctx.abbrev = DEFAULT_ABBREV;
if (src == buf->buf)
to_free = strbuf_detach(buf, NULL);
for (;;) {
const char *b, *c;
b = memmem(src, len, "$Format:", 8);
if (!b)
break;
c = memchr(b + 8, '$', (src + len) - b - 8);
if (!c)
break;
strbuf_reset(&fmt);
strbuf_add(&fmt, b + 8, c - b - 8);
strbuf_add(buf, src, b - src);
format_commit_message(commit, fmt.buf, buf, &ctx);
len -= c + 1 - src;
src = c + 1;
}
strbuf_add(buf, src, len);
strbuf_release(&fmt);
free(to_free);
}
static void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
unsigned int mode, enum object_type *type,
unsigned long *sizep, const struct commit *commit)
{
void *buffer;
buffer = read_sha1_file(sha1, type, sizep);
if (buffer && S_ISREG(mode)) {
struct strbuf buf = STRBUF_INIT;
size_t size = 0;
strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
convert_to_working_tree(path, buf.buf, buf.len, &buf);
if (commit)
format_subst(commit, buf.buf, buf.len, &buf);
buffer = strbuf_detach(&buf, &size);
*sizep = size;
}
return buffer;
}
static void setup_archive_check(struct git_attr_check *check)
{
static struct git_attr *attr_export_ignore;
static struct git_attr *attr_export_subst;
if (!attr_export_ignore) {
attr_export_ignore = git_attr("export-ignore");
attr_export_subst = git_attr("export-subst");
}
check[0].attr = attr_export_ignore;
check[1].attr = attr_export_subst;
}
struct archiver_context {
struct archiver_args *args;
write_archive_entry_fn_t write_entry;
};
static int write_archive_entry(const unsigned char *sha1, const char *base,
int baselen, const char *filename, unsigned mode, int stage,
void *context)
{
static struct strbuf path = STRBUF_INIT;
struct archiver_context *c = context;
struct archiver_args *args = c->args;
write_archive_entry_fn_t write_entry = c->write_entry;
struct git_attr_check check[2];
const char *path_without_prefix;
int convert = 0;
int err;
enum object_type type;
unsigned long size;
void *buffer;
strbuf_reset(&path);
strbuf_grow(&path, PATH_MAX);
strbuf_add(&path, args->base, args->baselen);
strbuf_add(&path, base, baselen);
strbuf_addstr(&path, filename);
path_without_prefix = path.buf + args->baselen;
setup_archive_check(check);
if (!git_checkattr(path_without_prefix, ARRAY_SIZE(check), check)) {
if (ATTR_TRUE(check[0].value))
return 0;
convert = ATTR_TRUE(check[1].value);
}
if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
strbuf_addch(&path, '/');
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
err = write_entry(args, sha1, path.buf, path.len, mode, NULL, 0);
if (err)
return err;
return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
}
buffer = sha1_file_to_archive(path_without_prefix, sha1, mode,
&type, &size, convert ? args->commit : NULL);
if (!buffer)
return error("cannot read %s", sha1_to_hex(sha1));
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
err = write_entry(args, sha1, path.buf, path.len, mode, buffer, size);
free(buffer);
return err;
}
int write_archive_entries(struct archiver_args *args,
write_archive_entry_fn_t write_entry)
{
struct archiver_context context;
struct unpack_trees_options opts;
struct tree_desc t;
int err;
if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
size_t len = args->baselen;
while (len > 1 && args->base[len - 2] == '/')
len--;
if (args->verbose)
fprintf(stderr, "%.*s\n", (int)len, args->base);
err = write_entry(args, args->tree->object.sha1, args->base,
len, 040777, NULL, 0);
if (err)
return err;
}
context.args = args;
context.write_entry = write_entry;
/*
* Setup index and instruct attr to read index only
*/
if (!args->worktree_attributes) {
memset(&opts, 0, sizeof(opts));
opts.index_only = 1;
opts.head_idx = -1;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.fn = oneway_merge;
init_tree_desc(&t, args->tree->buffer, args->tree->size);
if (unpack_trees(1, &t, &opts))
return -1;
git_attr_set_direction(GIT_ATTR_INDEX, &the_index);
}
err = read_tree_recursive(args->tree, "", 0, 0, args->pathspec,
write_archive_entry, &context);
if (err == READ_TREE_RECURSIVE)
err = 0;
return err;
}
static const struct archiver *lookup_archiver(const char *name)
{
int i;
if (!name)
return NULL;
for (i = 0; i < ARRAY_SIZE(archivers); i++) {
if (!strcmp(name, archivers[i].name))
return &archivers[i];
}
return NULL;
}
static int reject_entry(const unsigned char *sha1, const char *base,
int baselen, const char *filename, unsigned mode,
int stage, void *context)
{
return -1;
}
static int path_exists(struct tree *tree, const char *path)
{
const char *pathspec[] = { path, NULL };
if (read_tree_recursive(tree, "", 0, 0, pathspec, reject_entry, NULL))
return 1;
return 0;
}
static void parse_pathspec_arg(const char **pathspec,
struct archiver_args *ar_args)
{
ar_args->pathspec = pathspec = get_pathspec("", pathspec);
if (pathspec) {
while (*pathspec) {
if (!path_exists(ar_args->tree, *pathspec))
die("path not found: %s", *pathspec);
pathspec++;
}
}
}
static void parse_treeish_arg(const char **argv,
struct archiver_args *ar_args, const char *prefix)
{
const char *name = argv[0];
const unsigned char *commit_sha1;
time_t archive_time;
struct tree *tree;
const struct commit *commit;
unsigned char sha1[20];
if (get_sha1(name, sha1))
die("Not a valid object name");
commit = lookup_commit_reference_gently(sha1, 1);
if (commit) {
commit_sha1 = commit->object.sha1;
archive_time = commit->date;
} else {
commit_sha1 = NULL;
archive_time = time(NULL);
}
tree = parse_tree_indirect(sha1);
if (tree == NULL)
die("not a tree object");
if (prefix) {
unsigned char tree_sha1[20];
unsigned int mode;
int err;
err = get_tree_entry(tree->object.sha1, prefix,
tree_sha1, &mode);
if (err || !S_ISDIR(mode))
die("current working directory is untracked");
tree = parse_tree_indirect(tree_sha1);
}
ar_args->tree = tree;
ar_args->commit_sha1 = commit_sha1;
ar_args->commit = commit;
ar_args->time = archive_time;
}
#define OPT__COMPR(s, v, h, p) \
{ OPTION_SET_INT, (s), NULL, (v), NULL, (h), \
PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, (p) }
#define OPT__COMPR_HIDDEN(s, v, p) \
{ OPTION_SET_INT, (s), NULL, (v), NULL, "", \
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) }
static int parse_archive_args(int argc, const char **argv,
const struct archiver **ar, struct archiver_args *args)
{
const char *format = "tar";
const char *base = NULL;
const char *remote = NULL;
const char *exec = NULL;
const char *output = NULL;
int compression_level = -1;
int verbose = 0;
int i;
int list = 0;
int worktree_attributes = 0;
struct option opts[] = {
OPT_GROUP(""),
OPT_STRING(0, "format", &format, "fmt", "archive format"),
OPT_STRING(0, "prefix", &base, "prefix",
"prepend prefix to each pathname in the archive"),
OPT_STRING('o', "output", &output, "file",
"write the archive to this file"),
OPT_BOOLEAN(0, "worktree-attributes", &worktree_attributes,
"read .gitattributes in working directory"),
OPT__VERBOSE(&verbose, "report archived files on stderr"),
OPT__COMPR('0', &compression_level, "store only", 0),
OPT__COMPR('1', &compression_level, "compress faster", 1),
OPT__COMPR_HIDDEN('2', &compression_level, 2),
OPT__COMPR_HIDDEN('3', &compression_level, 3),
OPT__COMPR_HIDDEN('4', &compression_level, 4),
OPT__COMPR_HIDDEN('5', &compression_level, 5),
OPT__COMPR_HIDDEN('6', &compression_level, 6),
OPT__COMPR_HIDDEN('7', &compression_level, 7),
OPT__COMPR_HIDDEN('8', &compression_level, 8),
OPT__COMPR('9', &compression_level, "compress better", 9),
OPT_GROUP(""),
OPT_BOOLEAN('l', "list", &list,
"list supported archive formats"),
OPT_GROUP(""),
OPT_STRING(0, "remote", &remote, "repo",
"retrieve the archive from remote repository <repo>"),
OPT_STRING(0, "exec", &exec, "cmd",
"path to the remote git-upload-archive command"),
OPT_END()
};
argc = parse_options(argc, argv, NULL, opts, archive_usage, 0);
if (remote)
die("Unexpected option --remote");
if (exec)
die("Option --exec can only be used together with --remote");
if (output)
die("Unexpected option --output");
if (!base)
base = "";
if (list) {
for (i = 0; i < ARRAY_SIZE(archivers); i++)
printf("%s\n", archivers[i].name);
exit(0);
}
/* We need at least one parameter -- tree-ish */
if (argc < 1)
usage_with_options(archive_usage, opts);
*ar = lookup_archiver(format);
if (!*ar)
die("Unknown archive format '%s'", format);
args->compression_level = Z_DEFAULT_COMPRESSION;
if (compression_level != -1) {
if ((*ar)->flags & USES_ZLIB_COMPRESSION)
args->compression_level = compression_level;
else {
die("Argument not supported for format '%s': -%d",
format, compression_level);
}
}
args->verbose = verbose;
args->base = base;
args->baselen = strlen(base);
args->worktree_attributes = worktree_attributes;
return argc;
}
int write_archive(int argc, const char **argv, const char *prefix,
int setup_prefix)
{
const struct archiver *ar = NULL;
struct archiver_args args;
argc = parse_archive_args(argc, argv, &ar, &args);
if (setup_prefix && prefix == NULL)
prefix = setup_git_directory();
parse_treeish_arg(argv, &args, prefix);
parse_pathspec_arg(argv + 1, &args);
git_config(git_default_config, NULL);
return ar->write_archive(&args);
}
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...