static char *replace_encoding_header(char *buf, const char *encoding)
{
struct strbuf tmp = STRBUF_INIT;
size_t start, len;
char *cp = buf;
/* guess if there is an encoding header before a \n\n */
while (strncmp(cp, "encoding ", strlen("encoding "))) {
cp = strchr(cp, '\n');
if (!cp || *++cp == '\n')
return buf;
}
start = cp - buf;
cp = strchr(cp, '\n');
if (!cp)
return buf; /* should not happen but be defensive */
len = cp + 1 - (buf + start);
strbuf_attach(&tmp, buf, strlen(buf), strlen(buf) + 1);
if (is_encoding_utf8(encoding)) {
/* we have re-coded to UTF-8; drop the header */
strbuf_remove(&tmp, start, len);
} else {
/* just replaces XXXX in 'encoding XXXX\n' */
strbuf_splice(&tmp, start + strlen("encoding "),
len - strlen("encoding \n"),
encoding, strlen(encoding));
}
return strbuf_detach(&tmp, NULL);
}
static int handle_cache(const char *path, unsigned char *sha1, const char *output)
{
mmfile_t mmfile[3];
mmbuffer_t result = {NULL, 0};
struct cache_entry *ce;
int pos, len, i, hunk_no;
struct rerere_io_mem io;
int marker_size = ll_merge_marker_size(path);
/*
* Reproduce the conflicted merge in-core
*/
len = strlen(path);
pos = cache_name_pos(path, len);
if (0 <= pos)
return -1;
pos = -pos - 1;
for (i = 0; i < 3; i++) {
enum object_type type;
unsigned long size;
mmfile[i].size = 0;
mmfile[i].ptr = NULL;
if (active_nr <= pos)
break;
ce = active_cache[pos++];
if (ce_namelen(ce) != len || memcmp(ce->name, path, len)
|| ce_stage(ce) != i + 1)
break;
mmfile[i].ptr = read_sha1_file(ce->sha1, &type, &size);
mmfile[i].size = size;
}
for (i = 0; i < 3; i++) {
if (!mmfile[i].ptr && !mmfile[i].size)
mmfile[i].ptr = xstrdup("");
}
ll_merge(&result, path, &mmfile[0],
&mmfile[1], "ours",
&mmfile[2], "theirs", 0);
for (i = 0; i < 3; i++)
free(mmfile[i].ptr);
memset(&io, 0, sizeof(io));
io.io.getline = rerere_mem_getline;
if (output)
io.io.output = fopen(output, "w");
else
io.io.output = NULL;
strbuf_init(&io.input, 0);
strbuf_attach(&io.input, result.ptr, result.size, result.size);
hunk_no = handle_path(sha1, (struct rerere_io *)&io, marker_size);
strbuf_release(&io.input);
if (io.io.output)
fclose(io.io.output);
return hunk_no;
}
int strbuf_reencode(struct strbuf *sb, const char *from, const char *to)
{
char *out;
int len;
if (same_encoding(from, to))
return 0;
out = reencode_string_len(sb->buf, sb->len, to, from, &len);
if (!out)
return -1;
strbuf_attach(sb, out, len, len);
return 0;
}
void format_commit_message(const struct commit *commit,
const char *format, struct strbuf *sb,
const struct pretty_print_context *pretty_ctx)
{
struct format_commit_context context;
const char *output_enc = pretty_ctx->output_encoding;
const char *utf8 = "UTF-8";
memset(&context, 0, sizeof(context));
context.commit = commit;
context.pretty_ctx = pretty_ctx;
context.wrap_start = sb->len;
/*
* convert a commit message to UTF-8 first
* as far as 'format_commit_item' assumes it in UTF-8
*/
context.message = logmsg_reencode(commit,
&context.commit_encoding,
utf8);
strbuf_expand(sb, format, format_commit_item, &context);
rewrap_message_tail(sb, &context, 0, 0, 0);
/* then convert a commit message to an actual output encoding */
if (output_enc) {
if (same_encoding(utf8, output_enc))
output_enc = NULL;
} else {
if (context.commit_encoding &&
!same_encoding(context.commit_encoding, utf8))
output_enc = context.commit_encoding;
}
if (output_enc) {
int outsz;
char *out = reencode_string_len(sb->buf, sb->len,
output_enc, utf8, &outsz);
if (out)
strbuf_attach(sb, out, outsz, outsz + 1);
}
free(context.commit_encoding);
unuse_commit_buffer(commit, context.message);
free(context.signature_check.gpg_output);
free(context.signature_check.signer);
}
int git2_creat_force(const char *path, int mode)
{
if (git2_mkdir_2file(path) < GIT_OK)
return GIT_ERROR;
if (!git2_isdir(path)) {
struct strbuf pathbuf = STRBUF_INIT;
char * buf_path = xmalloc(strlen(path)*sizeof(char));
memcpy(buf_path, path, strlen(path)*sizeof(char));
strbuf_attach(&pathbuf, (void *)buf_path, strlen(path)*sizeof(char), strlen(path)*sizeof(char));
if (remove_dir_recursively(&pathbuf) != 0)
return GIT_ERROR;
}
return git2_creat(path, mode);
}
static void convert_to_utf8(struct strbuf *line, const char *charset)
{
char *out;
if (!charset || !*charset) {
charset = guess_charset(line, metainfo_charset);
if (!charset)
return;
}
if (!strcasecmp(metainfo_charset, charset))
return;
out = reencode_string(line->buf, metainfo_charset, charset);
if (!out)
die("cannot convert from %s to %s",
charset, metainfo_charset);
strbuf_attach(line, out, strlen(out), strlen(out));
}
static int convert_to_utf8(struct mailinfo *mi,
struct strbuf *line, const char *charset)
{
char *out;
if (!mi->metainfo_charset || !charset || !*charset)
return 0;
if (same_encoding(mi->metainfo_charset, charset))
return 0;
out = reencode_string(line->buf, mi->metainfo_charset, charset);
if (!out) {
mi->input_error = -1;
return error("cannot convert from %s to %s",
charset, mi->metainfo_charset);
}
strbuf_attach(line, out, strlen(out), strlen(out));
return 0;
}
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 int string_list_add_note_lines(struct string_list *sort_uniq_list,
const unsigned char *sha1)
{
char *data;
unsigned long len;
enum object_type t;
struct strbuf buf = STRBUF_INIT;
struct strbuf **lines = NULL;
int i, list_index;
if (is_null_sha1(sha1))
return 0;
/* read_sha1_file NUL-terminates */
data = read_sha1_file(sha1, &t, &len);
if (t != OBJ_BLOB || !data || !len) {
free(data);
return t != OBJ_BLOB || !data;
}
strbuf_attach(&buf, data, len, len + 1);
lines = strbuf_split(&buf, '\n');
for (i = 0; lines[i]; i++) {
if (lines[i]->buf[lines[i]->len - 1] == '\n')
strbuf_setlen(lines[i], lines[i]->len - 1);
if (!lines[i]->len)
continue; /* skip empty lines */
list_index = string_list_find_insert_index(sort_uniq_list,
lines[i]->buf, 0);
if (list_index < 0)
continue; /* skip duplicate lines */
string_list_insert_at_index(sort_uniq_list, list_index,
lines[i]->buf);
}
strbuf_list_free(lines);
strbuf_release(&buf);
return 0;
}
int notes_cache_write(struct notes_cache *c)
{
unsigned char tree_sha1[20];
unsigned char commit_sha1[20];
struct strbuf msg = STRBUF_INIT;
if (!c || !c->tree.initialized || !c->tree.ref || !*c->tree.ref)
return -1;
if (!c->tree.dirty)
return 0;
if (write_notes_tree(&c->tree, tree_sha1))
return -1;
strbuf_attach(&msg, c->validity,
strlen(c->validity), strlen(c->validity) + 1);
if (commit_tree(&msg, tree_sha1, NULL, commit_sha1, NULL, NULL) < 0)
return -1;
if (update_ref("update notes cache", c->tree.ref, commit_sha1, NULL,
0, QUIET_ON_ERR) < 0)
return -1;
return 0;
}
void *object_file_to_archive(const struct archiver_args *args,
const char *path, const struct object_id *oid,
unsigned int mode, enum object_type *type,
unsigned long *sizep)
{
void *buffer;
const struct commit *commit = args->convert ? args->commit : NULL;
path += args->baselen;
buffer = read_object_file(oid, 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(args->repo->index, 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;
}
/*
* First, one directory to try is determined by the following algorithm.
*
* (0) If "strict" is given, the path is used as given and no DWIM is
* done. Otherwise:
* (1) "~/path" to mean path under the running user's home directory;
* (2) "~user/path" to mean path under named user's home directory;
* (3) "relative/path" to mean cwd relative directory; or
* (4) "/absolute/path" to mean absolute directory.
*
* Unless "strict" is given, we check "%s/.git", "%s", "%s.git/.git", "%s.git"
* in this order. We select the first one that is a valid git repository, and
* chdir() to it. If none match, or we fail to chdir, we return NULL.
*
* If all goes well, we return the directory we used to chdir() (but
* before ~user is expanded), avoiding getcwd() resolving symbolic
* links. User relative paths are also returned as they are given,
* except DWIM suffixing.
*/
const char *enter_repo(const char *path, int strict)
{
static struct strbuf validated_path = STRBUF_INIT;
static struct strbuf used_path = STRBUF_INIT;
if (!path)
return NULL;
if (!strict) {
static const char *suffix[] = {
"/.git", "", ".git/.git", ".git", NULL,
};
const char *gitfile;
int len = strlen(path);
int i;
while ((1 < len) && (path[len-1] == '/'))
len--;
/*
* We can handle arbitrary-sized buffers, but this remains as a
* sanity check on untrusted input.
*/
if (PATH_MAX <= len)
return NULL;
strbuf_reset(&used_path);
strbuf_reset(&validated_path);
strbuf_add(&used_path, path, len);
strbuf_add(&validated_path, path, len);
if (used_path.buf[0] == '~') {
char *newpath = expand_user_path(used_path.buf);
if (!newpath)
return NULL;
strbuf_attach(&used_path, newpath, strlen(newpath),
strlen(newpath));
}
for (i = 0; suffix[i]; i++) {
struct stat st;
size_t baselen = used_path.len;
strbuf_addstr(&used_path, suffix[i]);
if (!stat(used_path.buf, &st) &&
(S_ISREG(st.st_mode) ||
(S_ISDIR(st.st_mode) && is_git_directory(used_path.buf)))) {
strbuf_addstr(&validated_path, suffix[i]);
break;
}
strbuf_setlen(&used_path, baselen);
}
if (!suffix[i])
return NULL;
gitfile = read_gitfile(used_path.buf);
if (gitfile) {
strbuf_reset(&used_path);
strbuf_addstr(&used_path, gitfile);
}
if (chdir(used_path.buf))
return NULL;
path = validated_path.buf;
}
else {
const char *gitfile = read_gitfile(path);
if (gitfile)
path = gitfile;
if (chdir(path))
return NULL;
}
if (is_git_directory(".")) {
set_git_dir(".");
check_repository_format();
return path;
}
return NULL;
}
static int handle_cache(const char *path, unsigned char *sha1, const char *output)
{
mmfile_t mmfile[3] = {{NULL}};
mmbuffer_t result = {NULL, 0};
const struct cache_entry *ce;
int pos, len, i, has_conflicts;
struct rerere_io_mem io;
int marker_size = ll_merge_marker_size(path);
/*
* Reproduce the conflicted merge in-core
*/
len = strlen(path);
pos = cache_name_pos(path, len);
if (0 <= pos)
return -1;
pos = -pos - 1;
while (pos < active_nr) {
enum object_type type;
unsigned long size;
ce = active_cache[pos++];
if (ce_namelen(ce) != len || memcmp(ce->name, path, len))
break;
i = ce_stage(ce) - 1;
if (!mmfile[i].ptr) {
mmfile[i].ptr = read_object_file(&ce->oid, &type,
&size);
mmfile[i].size = size;
}
}
for (i = 0; i < 3; i++)
if (!mmfile[i].ptr && !mmfile[i].size)
mmfile[i].ptr = xstrdup("");
/*
* NEEDSWORK: handle conflicts from merges with
* merge.renormalize set, too?
*/
ll_merge(&result, path, &mmfile[0], NULL,
&mmfile[1], "ours",
&mmfile[2], "theirs", NULL);
for (i = 0; i < 3; i++)
free(mmfile[i].ptr);
memset(&io, 0, sizeof(io));
io.io.getline = rerere_mem_getline;
if (output)
io.io.output = fopen(output, "w");
else
io.io.output = NULL;
strbuf_init(&io.input, 0);
strbuf_attach(&io.input, result.ptr, result.size, result.size);
/*
* Grab the conflict ID and optionally write the original
* contents with conflict markers out.
*/
has_conflicts = handle_path(sha1, (struct rerere_io *)&io, marker_size);
strbuf_release(&io.input);
if (io.io.output)
fclose(io.io.output);
return has_conflicts;
}
/*
* Prepare a dummy commit that represents the work tree (or staged) item.
* Note that annotating work tree item never works in the reverse.
*/
static struct commit *fake_working_tree_commit(struct diff_options *opt,
const char *path,
const char *contents_from)
{
struct commit *commit;
struct blame_origin *origin;
struct commit_list **parent_tail, *parent;
struct object_id head_oid;
struct strbuf buf = STRBUF_INIT;
const char *ident;
time_t now;
int size, len;
struct cache_entry *ce;
unsigned mode;
struct strbuf msg = STRBUF_INIT;
read_cache();
time(&now);
commit = alloc_commit_node();
commit->object.parsed = 1;
commit->date = now;
parent_tail = &commit->parents;
if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_oid.hash, NULL))
die("no such ref: HEAD");
parent_tail = append_parent(parent_tail, &head_oid);
append_merge_parents(parent_tail);
verify_working_tree_path(commit, path);
origin = make_origin(commit, path);
ident = fmt_ident("Not Committed Yet", "not.committed.yet", NULL, 0);
strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
for (parent = commit->parents; parent; parent = parent->next)
strbuf_addf(&msg, "parent %s\n",
oid_to_hex(&parent->item->object.oid));
strbuf_addf(&msg,
"author %s\n"
"committer %s\n\n"
"Version of %s from %s\n",
ident, ident, path,
(!contents_from ? path :
(!strcmp(contents_from, "-") ? "standard input" : contents_from)));
set_commit_buffer_from_strbuf(commit, &msg);
if (!contents_from || strcmp("-", contents_from)) {
struct stat st;
const char *read_from;
char *buf_ptr;
unsigned long buf_len;
if (contents_from) {
if (stat(contents_from, &st) < 0)
die_errno("Cannot stat '%s'", contents_from);
read_from = contents_from;
}
else {
if (lstat(path, &st) < 0)
die_errno("Cannot lstat '%s'", path);
read_from = path;
}
mode = canon_mode(st.st_mode);
switch (st.st_mode & S_IFMT) {
case S_IFREG:
if (DIFF_OPT_TST(opt, ALLOW_TEXTCONV) &&
textconv_object(read_from, mode, &null_oid, 0, &buf_ptr, &buf_len))
strbuf_attach(&buf, buf_ptr, buf_len, buf_len + 1);
else if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
die_errno("cannot open or read '%s'", read_from);
break;
case S_IFLNK:
if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
die_errno("cannot readlink '%s'", read_from);
break;
default:
die("unsupported file type %s", read_from);
}
}
else {
/* Reading from stdin */
mode = 0;
if (strbuf_read(&buf, 0, 0) < 0)
die_errno("failed to read from stdin");
}
convert_to_git(path, buf.buf, buf.len, &buf, 0);
origin->file.ptr = buf.buf;
origin->file.size = buf.len;
pretend_sha1_file(buf.buf, buf.len, OBJ_BLOB, origin->blob_oid.hash);
/*
* Read the current index, replace the path entry with
* origin->blob_sha1 without mucking with its mode or type
* bits; we are not going to write this index out -- we just
* want to run "diff-index --cached".
*/
discard_cache();
read_cache();
len = strlen(path);
if (!mode) {
int pos = cache_name_pos(path, len);
if (0 <= pos)
mode = active_cache[pos]->ce_mode;
else
/* Let's not bother reading from HEAD tree */
mode = S_IFREG | 0644;
}
size = cache_entry_size(len);
ce = xcalloc(1, size);
oidcpy(&ce->oid, &origin->blob_oid);
memcpy(ce->name, path, len);
ce->ce_flags = create_ce_flags(0);
ce->ce_namelen = len;
ce->ce_mode = create_ce_mode(mode);
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
cache_tree_invalidate_path(&the_index, path);
return commit;
}
int notes_merge_commit(struct notes_merge_options *o,
struct notes_tree *partial_tree,
struct commit *partial_commit,
unsigned char *result_sha1)
{
/*
* Iterate through files in .git/NOTES_MERGE_WORKTREE and add all
* found notes to 'partial_tree'. Write the updates notes tree to
* the DB, and commit the resulting tree object while reusing the
* commit message and parents from 'partial_commit'.
* Finally store the new commit object SHA1 into 'result_sha1'.
*/
struct dir_struct dir;
char *path = xstrdup(git_path(NOTES_MERGE_WORKTREE "/"));
int path_len = strlen(path), i;
char *msg = strstr(partial_commit->buffer, "\n\n");
struct strbuf sb_msg = STRBUF_INIT;
if (o->verbosity >= 3)
printf("Committing notes in notes merge worktree at %.*s\n",
path_len - 1, path);
if (!msg || msg[2] == '\0')
die("partial notes commit has empty message");
msg += 2;
memset(&dir, 0, sizeof(dir));
read_directory(&dir, path, path_len, NULL);
for (i = 0; i < dir.nr; i++) {
struct dir_entry *ent = dir.entries[i];
struct stat st;
const char *relpath = ent->name + path_len;
unsigned char obj_sha1[20], blob_sha1[20];
if (ent->len - path_len != 40 || get_sha1_hex(relpath, obj_sha1)) {
if (o->verbosity >= 3)
printf("Skipping non-SHA1 entry '%s'\n",
ent->name);
continue;
}
/* write file as blob, and add to partial_tree */
if (stat(ent->name, &st))
die_errno("Failed to stat '%s'", ent->name);
if (index_path(blob_sha1, ent->name, &st, HASH_WRITE_OBJECT))
die("Failed to write blob object from '%s'", ent->name);
if (add_note(partial_tree, obj_sha1, blob_sha1, NULL))
die("Failed to add resolved note '%s' to notes tree",
ent->name);
if (o->verbosity >= 4)
printf("Added resolved note for object %s: %s\n",
sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1));
}
strbuf_attach(&sb_msg, msg, strlen(msg), strlen(msg) + 1);
create_notes_commit(partial_tree, partial_commit->parents, &sb_msg,
result_sha1);
if (o->verbosity >= 4)
printf("Finalized notes merge commit: %s\n",
sha1_to_hex(result_sha1));
free(path);
return 0;
}