#include "object.h"
#include "tag.h"
#include "dir.h"
+#include "string-list.h"
/*
* Make sure "ref" is something reasonable to have under ".git/refs/";
static int ref_entry_cmp_sslice(const void *key_, const void *ent_)
{
- struct string_slice *key = (struct string_slice *)key_;
- struct ref_entry *ent = *(struct ref_entry **)ent_;
- int entlen = strlen(ent->name);
- int cmplen = key->len < entlen ? key->len : entlen;
- int cmp = memcmp(key->str, ent->name, cmplen);
+ const struct string_slice *key = key_;
+ const struct ref_entry *ent = *(const struct ref_entry * const *)ent_;
+ int cmp = strncmp(key->str, ent->name, key->len);
if (cmp)
return cmp;
- return key->len - entlen;
+ return '\0' - (unsigned char)ent->name[key->len];
}
/*
return line;
}
+/*
+ * Read f, which is a packed-refs file, into dir.
+ *
+ * A comment line of the form "# pack-refs with: " may contain zero or
+ * more traits. We interpret the traits as follows:
+ *
+ * No traits:
+ *
+ * Probably no references are peeled. But if the file contains a
+ * peeled value for a reference, we will use it.
+ *
+ * peeled:
+ *
+ * References under "refs/tags/", if they *can* be peeled, *are*
+ * peeled in this file. References outside of "refs/tags/" are
+ * probably not peeled even if they could have been, but if we find
+ * a peeled value for such a reference we will use it.
+ *
+ * fully-peeled:
+ *
+ * All references in the file that can be peeled are peeled.
+ * Inversely (and this is more important), any references in the
+ * file for which no peeled value is recorded is not peelable. This
+ * trait should typically be written alongside "peeled" for
+ * compatibility with older clients, but we do not require it
+ * (i.e., "peeled" is a no-op if "fully-peeled" is set).
+ */
static void read_packed_refs(FILE *f, struct ref_dir *dir)
{
struct ref_entry *last = NULL;
char refline[PATH_MAX];
- int flag = REF_ISPACKED;
+ enum { PEELED_NONE, PEELED_TAGS, PEELED_FULLY } peeled = PEELED_NONE;
while (fgets(refline, sizeof(refline), f)) {
unsigned char sha1[20];
if (!strncmp(refline, header, sizeof(header)-1)) {
const char *traits = refline + sizeof(header) - 1;
- if (strstr(traits, " peeled "))
- flag |= REF_KNOWS_PEELED;
+ if (strstr(traits, " fully-peeled "))
+ peeled = PEELED_FULLY;
+ else if (strstr(traits, " peeled "))
+ peeled = PEELED_TAGS;
/* perhaps other traits later as well */
continue;
}
refname = parse_ref_line(refline, sha1);
if (refname) {
- last = create_ref_entry(refname, sha1, flag, 1);
+ last = create_ref_entry(refname, sha1, REF_ISPACKED, 1);
+ if (peeled == PEELED_FULLY ||
+ (peeled == PEELED_TAGS && !prefixcmp(refname, "refs/tags/")))
+ last->flag |= REF_KNOWS_PEELED;
add_ref(dir, last);
continue;
}
refline[0] == '^' &&
strlen(refline) == 42 &&
refline[41] == '\n' &&
- !get_sha1_hex(refline + 1, sha1))
+ !get_sha1_hex(refline + 1, sha1)) {
hashcpy(last->u.value.peeled, sha1);
+ /*
+ * Regardless of what the file header said,
+ * we definitely know the value of *this*
+ * reference:
+ */
+ last->flag |= REF_KNOWS_PEELED;
+ }
}
}
if (current_ref && (current_ref->name == refname
|| !strcmp(current_ref->name, refname))) {
if (current_ref->flag & REF_KNOWS_PEELED) {
+ if (is_null_sha1(current_ref->u.value.peeled))
+ return -1;
hashcpy(sha1, current_ref->u.value.peeled);
return 0;
}
}
fallback:
- o = parse_object(base);
- if (o && o->type == OBJ_TAG) {
- o = deref_tag(o, refname, 0);
+ o = lookup_unknown_object(base);
+ if (o->type == OBJ_NONE) {
+ int type = sha1_object_info(base, NULL);
+ if (type < 0)
+ return -1;
+ o->type = type;
+ }
+
+ if (o->type == OBJ_TAG) {
+ o = deref_tag_noverify(o);
if (o) {
hashcpy(sha1, o->sha1);
return 0;
static int repack_without_ref(const char *refname)
{
struct repack_without_ref_sb data;
- struct ref_dir *packed = get_packed_refs(get_ref_cache(NULL));
+ struct ref_cache *refs = get_ref_cache(NULL);
+ struct ref_dir *packed = get_packed_refs(refs);
if (find_ref(packed, refname) == NULL)
return 0;
data.refname = refname;
unable_to_lock_error(git_path("packed-refs"), errno);
return error("cannot delete '%s' from packed refs", refname);
}
+ clear_packed_ref_cache(refs);
+ packed = get_packed_refs(refs);
do_for_each_ref_in_dir(packed, 0, "", repack_without_ref_fn, 0, 0, &data);
return commit_lock_file(&packlock);
}
struct ref_lock *lock;
int err, i = 0, ret = 0, flag = 0;
- lock = lock_ref_sha1_basic(refname, sha1, 0, &flag);
+ lock = lock_ref_sha1_basic(refname, sha1, delopt, &flag);
if (!lock)
return 1;
if (!(flag & REF_ISPACKED) || flag & REF_ISSYMREF) {
/* loose */
- const char *path;
-
- if (!(delopt & REF_NODEREF)) {
- i = strlen(lock->lk->filename) - 5; /* .lock */
- lock->lk->filename[i] = 0;
- path = lock->lk->filename;
- } else {
- path = git_path("%s", refname);
- }
- err = unlink_or_warn(path);
+ i = strlen(lock->lk->filename) - 5; /* .lock */
+ lock->lk->filename[i] = 0;
+ err = unlink_or_warn(lock->lk->filename);
if (err && errno != ENOENT)
ret = 1;
- if (!(delopt & REF_NODEREF))
- lock->lk->filename[i] = '.';
+ lock->lk->filename[i] = '.';
}
/* removing the loose one could have resurrected an earlier
* packed one. Also, if it was not loose we need to repack
* without it.
*/
- ret |= repack_without_ref(refname);
+ ret |= repack_without_ref(lock->ref_name);
unlink_or_warn(git_path("logs/%s", lock->ref_name));
invalidate_ref_cache(NULL);
return 1;
}
- int for_each_recent_reflog_ent(const char *refname, each_reflog_ent_fn fn, long ofs, void *cb_data)
+ static int show_one_reflog_ent(struct strbuf *sb, each_reflog_ent_fn fn, void *cb_data)
+ {
+ unsigned char osha1[20], nsha1[20];
+ char *email_end, *message;
+ unsigned long timestamp;
+ int tz;
+
+ /* old SP new SP name <email> SP time TAB msg LF */
+ if (sb->len < 83 || sb->buf[sb->len - 1] != '\n' ||
+ get_sha1_hex(sb->buf, osha1) || sb->buf[40] != ' ' ||
+ get_sha1_hex(sb->buf + 41, nsha1) || sb->buf[81] != ' ' ||
+ !(email_end = strchr(sb->buf + 82, '>')) ||
+ email_end[1] != ' ' ||
+ !(timestamp = strtoul(email_end + 2, &message, 10)) ||
+ !message || message[0] != ' ' ||
+ (message[1] != '+' && message[1] != '-') ||
+ !isdigit(message[2]) || !isdigit(message[3]) ||
+ !isdigit(message[4]) || !isdigit(message[5]))
+ return 0; /* corrupt? */
+ email_end[1] = '\0';
+ tz = strtol(message + 1, NULL, 10);
+ if (message[6] != '\t')
+ message += 6;
+ else
+ message += 7;
+ return fn(osha1, nsha1, sb->buf + 82, timestamp, tz, message, cb_data);
+ }
+
+ static char *find_beginning_of_line(char *bob, char *scan)
+ {
+ while (bob < scan && *(--scan) != '\n')
+ ; /* keep scanning backwards */
+ /*
+ * Return either beginning of the buffer, or LF at the end of
+ * the previous line.
+ */
+ return scan;
+ }
+
+ int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, void *cb_data)
{
- const char *logfile;
- FILE *logfp;
struct strbuf sb = STRBUF_INIT;
- int ret = 0;
+ FILE *logfp;
+ long pos;
+ int ret = 0, at_tail = 1;
- logfile = git_path("logs/%s", refname);
- logfp = fopen(logfile, "r");
+ logfp = fopen(git_path("logs/%s", refname), "r");
if (!logfp)
return -1;
- if (ofs) {
- struct stat statbuf;
- if (fstat(fileno(logfp), &statbuf) ||
- statbuf.st_size < ofs ||
- fseek(logfp, -ofs, SEEK_END) ||
- strbuf_getwholeline(&sb, logfp, '\n')) {
- fclose(logfp);
- strbuf_release(&sb);
- return -1;
+ /* Jump to the end */
+ if (fseek(logfp, 0, SEEK_END) < 0)
+ return error("cannot seek back reflog for %s: %s",
+ refname, strerror(errno));
+ pos = ftell(logfp);
+ while (!ret && 0 < pos) {
+ int cnt;
+ size_t nread;
+ char buf[BUFSIZ];
+ char *endp, *scanp;
+
+ /* Fill next block from the end */
+ cnt = (sizeof(buf) < pos) ? sizeof(buf) : pos;
+ if (fseek(logfp, pos - cnt, SEEK_SET))
+ return error("cannot seek back reflog for %s: %s",
+ refname, strerror(errno));
+ nread = fread(buf, cnt, 1, logfp);
+ if (nread != 1)
+ return error("cannot read %d bytes from reflog for %s: %s",
+ cnt, refname, strerror(errno));
+ pos -= cnt;
+
+ scanp = endp = buf + cnt;
+ if (at_tail && scanp[-1] == '\n')
+ /* Looking at the final LF at the end of the file */
+ scanp--;
+ at_tail = 0;
+
+ while (buf < scanp) {
+ /*
+ * terminating LF of the previous line, or the beginning
+ * of the buffer.
+ */
+ char *bp;
+
+ bp = find_beginning_of_line(buf, scanp);
+
+ if (*bp != '\n') {
+ strbuf_splice(&sb, 0, 0, buf, endp - buf);
+ if (pos)
+ break; /* need to fill another block */
+ scanp = buf - 1; /* leave loop */
+ } else {
+ /*
+ * (bp + 1) thru endp is the beginning of the
+ * current line we have in sb
+ */
+ strbuf_splice(&sb, 0, 0, bp + 1, endp - (bp + 1));
+ scanp = bp;
+ endp = bp + 1;
+ }
+ ret = show_one_reflog_ent(&sb, fn, cb_data);
+ strbuf_reset(&sb);
+ if (ret)
+ break;
}
- }
- while (!strbuf_getwholeline(&sb, logfp, '\n')) {
- unsigned char osha1[20], nsha1[20];
- char *email_end, *message;
- unsigned long timestamp;
- int tz;
-
- /* old SP new SP name <email> SP time TAB msg LF */
- if (sb.len < 83 || sb.buf[sb.len - 1] != '\n' ||
- get_sha1_hex(sb.buf, osha1) || sb.buf[40] != ' ' ||
- get_sha1_hex(sb.buf + 41, nsha1) || sb.buf[81] != ' ' ||
- !(email_end = strchr(sb.buf + 82, '>')) ||
- email_end[1] != ' ' ||
- !(timestamp = strtoul(email_end + 2, &message, 10)) ||
- !message || message[0] != ' ' ||
- (message[1] != '+' && message[1] != '-') ||
- !isdigit(message[2]) || !isdigit(message[3]) ||
- !isdigit(message[4]) || !isdigit(message[5]))
- continue; /* corrupt? */
- email_end[1] = '\0';
- tz = strtol(message + 1, NULL, 10);
- if (message[6] != '\t')
- message += 6;
- else
- message += 7;
- ret = fn(osha1, nsha1, sb.buf + 82, timestamp, tz, message,
- cb_data);
- if (ret)
- break;
}
+ if (!ret && sb.len)
+ ret = show_one_reflog_ent(&sb, fn, cb_data);
+
fclose(logfp);
strbuf_release(&sb);
return ret;
int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, void *cb_data)
{
- return for_each_recent_reflog_ent(refname, fn, 0, cb_data);
- }
+ FILE *logfp;
+ struct strbuf sb = STRBUF_INIT;
+ int ret = 0;
+
+ logfp = fopen(git_path("logs/%s", refname), "r");
+ if (!logfp)
+ return -1;
+ while (!ret && !strbuf_getwholeline(&sb, logfp, '\n'))
+ ret = show_one_reflog_ent(&sb, fn, cb_data);
+ fclose(logfp);
+ strbuf_release(&sb);
+ return ret;
+ }
/*
* Call fn for each reflog in the namespace indicated by name. name
* must be empty or end with '/'. Name will be used as a scratch
free(short_name);
return xstrdup(refname);
}
+
+static struct string_list *hide_refs;
+
+int parse_hide_refs_config(const char *var, const char *value, const char *section)
+{
+ if (!strcmp("transfer.hiderefs", var) ||
+ /* NEEDSWORK: use parse_config_key() once both are merged */
+ (!prefixcmp(var, section) && var[strlen(section)] == '.' &&
+ !strcmp(var + strlen(section), ".hiderefs"))) {
+ char *ref;
+ int len;
+
+ if (!value)
+ return config_error_nonbool(var);
+ ref = xstrdup(value);
+ len = strlen(ref);
+ while (len && ref[len - 1] == '/')
+ ref[--len] = '\0';
+ if (!hide_refs) {
+ hide_refs = xcalloc(1, sizeof(*hide_refs));
+ hide_refs->strdup_strings = 1;
+ }
+ string_list_append(hide_refs, ref);
+ }
+ return 0;
+}
+
+int ref_is_hidden(const char *refname)
+{
+ struct string_list_item *item;
+
+ if (!hide_refs)
+ return 0;
+ for_each_string_list_item(item, hide_refs) {
+ int len;
+ if (prefixcmp(refname, item->string))
+ continue;
+ len = strlen(item->string);
+ if (!refname[len] || refname[len] == '/')
+ return 1;
+ }
+ return 0;
+}
}
struct grab_nth_branch_switch_cbdata {
- long cnt, alloc;
- struct strbuf *buf;
+ int remaining;
+ struct strbuf buf;
};
static int grab_nth_branch_switch(unsigned char *osha1, unsigned char *nsha1,
struct grab_nth_branch_switch_cbdata *cb = cb_data;
const char *match = NULL, *target = NULL;
size_t len;
- int nth;
if (!prefixcmp(message, "checkout: moving from ")) {
match = message + strlen("checkout: moving from ");
if (!match || !target)
return 0;
-
- len = target - match;
- nth = cb->cnt++ % cb->alloc;
- strbuf_reset(&cb->buf[nth]);
- strbuf_add(&cb->buf[nth], match, len);
+ if (--(cb->remaining) == 0) {
+ len = target - match;
+ strbuf_reset(&cb->buf);
+ strbuf_add(&cb->buf, match, len);
+ return 1; /* we are done */
+ }
return 0;
}
static int interpret_nth_prior_checkout(const char *name, struct strbuf *buf)
{
long nth;
- int i, retval;
+ int retval;
struct grab_nth_branch_switch_cbdata cb;
const char *brace;
char *num_end;
brace = strchr(name, '}');
if (!brace)
return -1;
- nth = strtol(name+3, &num_end, 10);
+ nth = strtol(name + 3, &num_end, 10);
if (num_end != brace)
return -1;
if (nth <= 0)
return -1;
- cb.alloc = nth;
- cb.buf = xmalloc(nth * sizeof(struct strbuf));
- for (i = 0; i < nth; i++)
- strbuf_init(&cb.buf[i], 20);
- cb.cnt = 0;
+ cb.remaining = nth;
+ strbuf_init(&cb.buf, 20);
+
retval = 0;
- for_each_recent_reflog_ent("HEAD", grab_nth_branch_switch, 40960, &cb);
- if (cb.cnt < nth) {
- cb.cnt = 0;
- for_each_reflog_ent("HEAD", grab_nth_branch_switch, &cb);
- }
- if (cb.cnt < nth)
- goto release_return;
- i = cb.cnt % nth;
- strbuf_reset(buf);
- strbuf_add(buf, cb.buf[i].buf, cb.buf[i].len);
- retval = brace-name+1;
-
- release_return:
- for (i = 0; i < nth; i++)
- strbuf_release(&cb.buf[i]);
- free(cb.buf);
+ if (0 < for_each_reflog_ent_reverse("HEAD", grab_nth_branch_switch, &cb)) {
+ strbuf_reset(buf);
+ strbuf_add(buf, cb.buf.buf, cb.buf.len);
+ retval = brace - name + 1;
+ }
+ strbuf_release(&cb.buf);
return retval;
}
static void diagnose_invalid_sha1_path(const char *prefix,
const char *filename,
const unsigned char *tree_sha1,
- const char *object_name)
+ const char *object_name,
+ int object_name_len)
{
struct stat st;
unsigned char sha1[20];
prefix = "";
if (!lstat(filename, &st))
- die("Path '%s' exists on disk, but not in '%s'.",
- filename, object_name);
+ die("Path '%s' exists on disk, but not in '%.*s'.",
+ filename, object_name_len, object_name);
if (errno == ENOENT || errno == ENOTDIR) {
char *fullname = xmalloc(strlen(filename)
+ strlen(prefix) + 1);
if (!get_tree_entry(tree_sha1, fullname,
sha1, &mode)) {
die("Path '%s' exists, but not '%s'.\n"
- "Did you mean '%s:%s' aka '%s:./%s'?",
+ "Did you mean '%.*s:%s' aka '%.*s:./%s'?",
fullname,
filename,
- object_name,
+ object_name_len, object_name,
fullname,
- object_name,
+ object_name_len, object_name,
filename);
}
- die("Path '%s' does not exist in '%s'",
- filename, object_name);
+ die("Path '%s' does not exist in '%.*s'",
+ filename, object_name_len, object_name);
}
}
}
if (*cp == ':') {
unsigned char tree_sha1[20];
- char *object_name = NULL;
- if (only_to_die) {
- object_name = xmalloc(cp-name+1);
- strncpy(object_name, name, cp-name);
- object_name[cp-name] = '\0';
- }
- if (!get_sha1_1(name, cp-name, tree_sha1, GET_SHA1_TREEISH)) {
+ int len = cp - name;
+ if (!get_sha1_1(name, len, tree_sha1, GET_SHA1_TREEISH)) {
const char *filename = cp+1;
char *new_filename = NULL;
ret = get_tree_entry(tree_sha1, filename, sha1, &oc->mode);
if (ret && only_to_die) {
diagnose_invalid_sha1_path(prefix, filename,
- tree_sha1, object_name);
- free(object_name);
+ tree_sha1,
+ name, len);
}
hashcpy(oc->tree, tree_sha1);
strncpy(oc->path, filename,
return ret;
} else {
if (only_to_die)
- die("Invalid object name '%s'.", object_name);
+ die("Invalid object name '%.*s'.", len, name);
}
}
return ret;