#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
#define NO_REPLACE_OBJECTS_ENVIRONMENT "GIT_NO_REPLACE_OBJECTS"
+#define GIT_REPLACE_REF_BASE_ENVIRONMENT "GIT_REPLACE_REF_BASE"
#define GITATTRIBUTES_FILE ".gitattributes"
#define INFOATTRIBUTES_FILE "info/attributes"
#define ATTRIBUTE_MACRO_PREFIX "[attr]"
extern const char *get_git_namespace(void);
extern const char *strip_namespace(const char *namespaced_ref);
extern const char *get_git_work_tree(void);
-extern const char *read_gitfile(const char *path);
+
+#define READ_GITFILE_ERR_STAT_FAILED 1
+#define READ_GITFILE_ERR_NOT_A_FILE 2
+#define READ_GITFILE_ERR_OPEN_FAILED 3
+#define READ_GITFILE_ERR_READ_FAILED 4
+#define READ_GITFILE_ERR_INVALID_FORMAT 5
+#define READ_GITFILE_ERR_NO_PATH 6
+#define READ_GITFILE_ERR_NOT_A_REPO 7
+#define READ_GITFILE_ERR_TOO_LARGE 8
+extern const char *read_gitfile_gently(const char *path, int *return_error_code);
+#define read_gitfile(path) read_gitfile_gently((path), NULL)
extern const char *resolve_gitdir(const char *suspect);
extern void set_git_work_tree(const char *tree);
extern int hold_locked_index(struct lock_file *, int);
extern void set_alternate_index_output(const char *);
-extern int delete_ref(const char *, const unsigned char *sha1, unsigned int flags);
-
/* Environment bits from configuration mechanism */
extern int trust_executable_bit;
extern int trust_ctime;
* been sought but there were none.
*/
extern int check_replace_refs;
+extern char *git_replace_ref_base;
extern int fsync_object_files;
extern int core_preload_index;
extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */
extern char *oid_to_hex(const struct object_id *oid); /* same static buffer as sha1_to_hex */
-extern int read_ref_full(const char *refname, int resolve_flags,
- unsigned char *sha1, int *flags);
-extern int read_ref(const char *refname, unsigned char *sha1);
-/*
- * Resolve a reference, recursively following symbolic refererences.
- *
- * Store the referred-to object's name in sha1 and return the name of
- * the non-symbolic reference that ultimately pointed at it. The
- * return value, if not NULL, is a pointer into either a static buffer
- * or the input ref.
- *
- * If the reference cannot be resolved to an object, the behavior
- * depends on the RESOLVE_REF_READING flag:
- *
- * - If RESOLVE_REF_READING is set, return NULL.
- *
- * - If RESOLVE_REF_READING is not set, clear sha1 and return the name of
- * the last reference name in the chain, which will either be a non-symbolic
- * reference or an undefined reference. If this is a prelude to
- * "writing" to the ref, the return value is the name of the ref
- * that will actually be created or changed.
- *
- * If the RESOLVE_REF_NO_RECURSE flag is passed, only resolves one
- * level of symbolic reference. The value stored in sha1 for a symbolic
- * reference will always be null_sha1 in this case, and the return
- * value is the reference that the symref refers to directly.
- *
- * If flags is non-NULL, set the value that it points to the
- * combination of REF_ISPACKED (if the reference was found among the
- * packed references), REF_ISSYMREF (if the initial reference was a
- * symbolic reference), REF_BAD_NAME (if the reference name is ill
- * formed --- see RESOLVE_REF_ALLOW_BAD_NAME below), and REF_ISBROKEN
- * (if the ref is malformed or has a bad name). See refs.h for more detail
- * on each flag.
- *
- * If ref is not a properly-formatted, normalized reference, return
- * NULL. If more than MAXDEPTH recursive symbolic lookups are needed,
- * give up and return NULL.
- *
- * RESOLVE_REF_ALLOW_BAD_NAME allows resolving refs even when their
- * name is invalid according to git-check-ref-format(1). If the name
- * is bad then the value stored in sha1 will be null_sha1 and the two
- * flags REF_ISBROKEN and REF_BAD_NAME will be set.
- *
- * Even with RESOLVE_REF_ALLOW_BAD_NAME, names that escape the refs/
- * directory and do not consist of all caps and underscores cannot be
- * resolved. The function returns NULL for such ref names.
- * Caps and underscores refers to the special refs, such as HEAD,
- * FETCH_HEAD and friends, that all live outside of the refs/ directory.
- */
-#define RESOLVE_REF_READING 0x01
-#define RESOLVE_REF_NO_RECURSE 0x02
-#define RESOLVE_REF_ALLOW_BAD_NAME 0x04
-extern const char *resolve_ref_unsafe(const char *ref, int resolve_flags, unsigned char *sha1, int *flags);
-extern char *resolve_refdup(const char *ref, int resolve_flags, unsigned char *sha1, int *flags);
-
-extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
-extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
extern int interpret_branch_name(const char *str, int len, struct strbuf *);
extern int get_sha1_mb(const char *str, unsigned char *sha1);
-/*
- * Return true iff abbrev_name is a possible abbreviation for
- * full_name according to the rules defined by ref_rev_parse_rules in
- * refs.c.
- */
-extern int refname_match(const char *abbrev_name, const char *full_name);
-
-extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
extern int validate_headref(const char *ref);
extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
extern struct object *peel_to_type(const char *name, int namelen,
struct object *o, enum object_type);
- enum date_mode {
- DATE_NORMAL = 0,
- DATE_RELATIVE,
- DATE_SHORT,
- DATE_LOCAL,
- DATE_ISO8601,
- DATE_ISO8601_STRICT,
- DATE_RFC2822,
- DATE_RAW
+ struct date_mode {
+ enum date_mode_type {
+ DATE_NORMAL = 0,
+ DATE_RELATIVE,
+ DATE_SHORT,
+ DATE_LOCAL,
+ DATE_ISO8601,
+ DATE_ISO8601_STRICT,
+ DATE_RFC2822,
+ DATE_STRFTIME,
+ DATE_RAW
+ } type;
+ const char *strftime_fmt;
};
- const char *show_date(unsigned long time, int timezone, enum date_mode mode);
+ /*
+ * Convenience helper for passing a constant type, like:
+ *
+ * show_date(t, tz, DATE_MODE(NORMAL));
+ */
+ #define DATE_MODE(t) date_mode_from_type(DATE_##t)
+ struct date_mode *date_mode_from_type(enum date_mode_type type);
+
+ const char *show_date(unsigned long time, int timezone, const struct date_mode *mode);
void show_date_relative(unsigned long time, int tz, const struct timeval *now,
struct strbuf *timebuf);
int parse_date(const char *date, struct strbuf *out);
#define approxidate(s) approxidate_careful((s), NULL)
unsigned long approxidate_careful(const char *, int *);
unsigned long approxidate_relative(const char *date, const struct timeval *now);
- enum date_mode parse_date_format(const char *format);
+ void parse_date_format(const char *format, struct date_mode *mode);
int date_overflows(unsigned long date);
#define IDENT_STRICT 1
* the ident_split. It will also sanity-check the values and produce
* a well-known sentinel date if they appear bogus.
*/
- const char *show_ident_date(const struct ident_split *id, enum date_mode mode);
+ const char *show_ident_date(const struct ident_split *id,
+ const struct date_mode *mode);
/*
* Compare split idents for equality or strict ordering. Note that we
--- /dev/null
- enum date_mode date_mode = DATE_NORMAL;
+#include "builtin.h"
+#include "cache.h"
+#include "parse-options.h"
+#include "refs.h"
+#include "wildmatch.h"
+#include "commit.h"
+#include "remote.h"
+#include "color.h"
+#include "tag.h"
+#include "quote.h"
+#include "ref-filter.h"
+
+typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
+
+static struct {
+ const char *name;
+ cmp_type cmp_type;
+} valid_atom[] = {
+ { "refname" },
+ { "objecttype" },
+ { "objectsize", FIELD_ULONG },
+ { "objectname" },
+ { "tree" },
+ { "parent" },
+ { "numparent", FIELD_ULONG },
+ { "object" },
+ { "type" },
+ { "tag" },
+ { "author" },
+ { "authorname" },
+ { "authoremail" },
+ { "authordate", FIELD_TIME },
+ { "committer" },
+ { "committername" },
+ { "committeremail" },
+ { "committerdate", FIELD_TIME },
+ { "tagger" },
+ { "taggername" },
+ { "taggeremail" },
+ { "taggerdate", FIELD_TIME },
+ { "creator" },
+ { "creatordate", FIELD_TIME },
+ { "subject" },
+ { "body" },
+ { "contents" },
+ { "contents:subject" },
+ { "contents:body" },
+ { "contents:signature" },
+ { "upstream" },
+ { "push" },
+ { "symref" },
+ { "flag" },
+ { "HEAD" },
+ { "color" },
+};
+
+/*
+ * An atom is a valid field atom listed above, possibly prefixed with
+ * a "*" to denote deref_tag().
+ *
+ * We parse given format string and sort specifiers, and make a list
+ * of properties that we need to extract out of objects. ref_array_item
+ * structure will hold an array of values extracted that can be
+ * indexed with the "atom number", which is an index into this
+ * array.
+ */
+static const char **used_atom;
+static cmp_type *used_atom_type;
+static int used_atom_cnt, need_tagged, need_symref;
+static int need_color_reset_at_eol;
+
+/*
+ * Used to parse format string and sort specifiers
+ */
+int parse_ref_filter_atom(const char *atom, const char *ep)
+{
+ const char *sp;
+ int i, at;
+
+ sp = atom;
+ if (*sp == '*' && sp < ep)
+ sp++; /* deref */
+ if (ep <= sp)
+ die("malformed field name: %.*s", (int)(ep-atom), atom);
+
+ /* Do we have the atom already used elsewhere? */
+ for (i = 0; i < used_atom_cnt; i++) {
+ int len = strlen(used_atom[i]);
+ if (len == ep - atom && !memcmp(used_atom[i], atom, len))
+ return i;
+ }
+
+ /* Is the atom a valid one? */
+ for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
+ int len = strlen(valid_atom[i].name);
+ /*
+ * If the atom name has a colon, strip it and everything after
+ * it off - it specifies the format for this entry, and
+ * shouldn't be used for checking against the valid_atom
+ * table.
+ */
+ const char *formatp = strchr(sp, ':');
+ if (!formatp || ep < formatp)
+ formatp = ep;
+ if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
+ break;
+ }
+
+ if (ARRAY_SIZE(valid_atom) <= i)
+ die("unknown field name: %.*s", (int)(ep-atom), atom);
+
+ /* Add it in, including the deref prefix */
+ at = used_atom_cnt;
+ used_atom_cnt++;
+ REALLOC_ARRAY(used_atom, used_atom_cnt);
+ REALLOC_ARRAY(used_atom_type, used_atom_cnt);
+ used_atom[at] = xmemdupz(atom, ep - atom);
+ used_atom_type[at] = valid_atom[i].cmp_type;
+ if (*atom == '*')
+ need_tagged = 1;
+ if (!strcmp(used_atom[at], "symref"))
+ need_symref = 1;
+ return at;
+}
+
+/*
+ * In a format string, find the next occurrence of %(atom).
+ */
+static const char *find_next(const char *cp)
+{
+ while (*cp) {
+ if (*cp == '%') {
+ /*
+ * %( is the start of an atom;
+ * %% is a quoted per-cent.
+ */
+ if (cp[1] == '(')
+ return cp;
+ else if (cp[1] == '%')
+ cp++; /* skip over two % */
+ /* otherwise this is a singleton, literal % */
+ }
+ cp++;
+ }
+ return NULL;
+}
+
+/*
+ * Make sure the format string is well formed, and parse out
+ * the used atoms.
+ */
+int verify_ref_format(const char *format)
+{
+ const char *cp, *sp;
+
+ need_color_reset_at_eol = 0;
+ for (cp = format; *cp && (sp = find_next(cp)); ) {
+ const char *color, *ep = strchr(sp, ')');
+ int at;
+
+ if (!ep)
+ return error("malformed format string %s", sp);
+ /* sp points at "%(" and ep points at the closing ")" */
+ at = parse_ref_filter_atom(sp + 2, ep);
+ cp = ep + 1;
+
+ if (skip_prefix(used_atom[at], "color:", &color))
+ need_color_reset_at_eol = !!strcmp(color, "reset");
+ }
+ return 0;
+}
+
+/*
+ * Given an object name, read the object data and size, and return a
+ * "struct object". If the object data we are returning is also borrowed
+ * by the "struct object" representation, set *eaten as well---it is a
+ * signal from parse_object_buffer to us not to free the buffer.
+ */
+static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
+{
+ enum object_type type;
+ void *buf = read_sha1_file(sha1, &type, sz);
+
+ if (buf)
+ *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
+ else
+ *obj = NULL;
+ return buf;
+}
+
+static int grab_objectname(const char *name, const unsigned char *sha1,
+ struct atom_value *v)
+{
+ if (!strcmp(name, "objectname")) {
+ char *s = xmalloc(41);
+ strcpy(s, sha1_to_hex(sha1));
+ v->s = s;
+ return 1;
+ }
+ if (!strcmp(name, "objectname:short")) {
+ v->s = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
+ return 1;
+ }
+ return 0;
+}
+
+/* See grab_values */
+static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ int i;
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+ if (!strcmp(name, "objecttype"))
+ v->s = typename(obj->type);
+ else if (!strcmp(name, "objectsize")) {
+ char *s = xmalloc(40);
+ sprintf(s, "%lu", sz);
+ v->ul = sz;
+ v->s = s;
+ }
+ else if (deref)
+ grab_objectname(name, obj->sha1, v);
+ }
+}
+
+/* See grab_values */
+static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ int i;
+ struct tag *tag = (struct tag *) obj;
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+ if (!strcmp(name, "tag"))
+ v->s = tag->tag;
+ else if (!strcmp(name, "type") && tag->tagged)
+ v->s = typename(tag->tagged->type);
+ else if (!strcmp(name, "object") && tag->tagged) {
+ char *s = xmalloc(41);
+ strcpy(s, sha1_to_hex(tag->tagged->sha1));
+ v->s = s;
+ }
+ }
+}
+
+/* See grab_values */
+static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ int i;
+ struct commit *commit = (struct commit *) obj;
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+ if (!strcmp(name, "tree")) {
+ char *s = xmalloc(41);
+ strcpy(s, sha1_to_hex(commit->tree->object.sha1));
+ v->s = s;
+ }
+ if (!strcmp(name, "numparent")) {
+ char *s = xmalloc(40);
+ v->ul = commit_list_count(commit->parents);
+ sprintf(s, "%lu", v->ul);
+ v->s = s;
+ }
+ else if (!strcmp(name, "parent")) {
+ int num = commit_list_count(commit->parents);
+ int i;
+ struct commit_list *parents;
+ char *s = xmalloc(41 * num + 1);
+ v->s = s;
+ for (i = 0, parents = commit->parents;
+ parents;
+ parents = parents->next, i = i + 41) {
+ struct commit *parent = parents->item;
+ strcpy(s+i, sha1_to_hex(parent->object.sha1));
+ if (parents->next)
+ s[i+40] = ' ';
+ }
+ if (!i)
+ *s = '\0';
+ }
+ }
+}
+
+static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
+{
+ const char *eol;
+ while (*buf) {
+ if (!strncmp(buf, who, wholen) &&
+ buf[wholen] == ' ')
+ return buf + wholen + 1;
+ eol = strchr(buf, '\n');
+ if (!eol)
+ return "";
+ eol++;
+ if (*eol == '\n')
+ return ""; /* end of header */
+ buf = eol;
+ }
+ return "";
+}
+
+static const char *copy_line(const char *buf)
+{
+ const char *eol = strchrnul(buf, '\n');
+ return xmemdupz(buf, eol - buf);
+}
+
+static const char *copy_name(const char *buf)
+{
+ const char *cp;
+ for (cp = buf; *cp && *cp != '\n'; cp++) {
+ if (!strncmp(cp, " <", 2))
+ return xmemdupz(buf, cp - buf);
+ }
+ return "";
+}
+
+static const char *copy_email(const char *buf)
+{
+ const char *email = strchr(buf, '<');
+ const char *eoemail;
+ if (!email)
+ return "";
+ eoemail = strchr(email, '>');
+ if (!eoemail)
+ return "";
+ return xmemdupz(email, eoemail + 1 - email);
+}
+
+static char *copy_subject(const char *buf, unsigned long len)
+{
+ char *r = xmemdupz(buf, len);
+ int i;
+
+ for (i = 0; i < len; i++)
+ if (r[i] == '\n')
+ r[i] = ' ';
+
+ return r;
+}
+
+static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
+{
+ const char *eoemail = strstr(buf, "> ");
+ char *zone;
+ unsigned long timestamp;
+ long tz;
- date_mode = parse_date_format(formatp);
++ struct date_mode date_mode = { DATE_NORMAL };
+ const char *formatp;
+
+ /*
+ * We got here because atomname ends in "date" or "date<something>";
+ * it's not possible that <something> is not ":<format>" because
+ * parse_ref_filter_atom() wouldn't have allowed it, so we can assume that no
+ * ":" means no format is specified, and use the default.
+ */
+ formatp = strchr(atomname, ':');
+ if (formatp != NULL) {
+ formatp++;
- v->s = xstrdup(show_date(timestamp, tz, date_mode));
++ parse_date_format(formatp, &date_mode);
+ }
+
+ if (!eoemail)
+ goto bad;
+ timestamp = strtoul(eoemail + 2, &zone, 10);
+ if (timestamp == ULONG_MAX)
+ goto bad;
+ tz = strtol(zone, NULL, 10);
+ if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
+ goto bad;
++ v->s = xstrdup(show_date(timestamp, tz, &date_mode));
+ v->ul = timestamp;
+ return;
+ bad:
+ v->s = "";
+ v->ul = 0;
+}
+
+/* See grab_values */
+static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ int i;
+ int wholen = strlen(who);
+ const char *wholine = NULL;
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+ if (strncmp(who, name, wholen))
+ continue;
+ if (name[wholen] != 0 &&
+ strcmp(name + wholen, "name") &&
+ strcmp(name + wholen, "email") &&
+ !starts_with(name + wholen, "date"))
+ continue;
+ if (!wholine)
+ wholine = find_wholine(who, wholen, buf, sz);
+ if (!wholine)
+ return; /* no point looking for it */
+ if (name[wholen] == 0)
+ v->s = copy_line(wholine);
+ else if (!strcmp(name + wholen, "name"))
+ v->s = copy_name(wholine);
+ else if (!strcmp(name + wholen, "email"))
+ v->s = copy_email(wholine);
+ else if (starts_with(name + wholen, "date"))
+ grab_date(wholine, v, name);
+ }
+
+ /*
+ * For a tag or a commit object, if "creator" or "creatordate" is
+ * requested, do something special.
+ */
+ if (strcmp(who, "tagger") && strcmp(who, "committer"))
+ return; /* "author" for commit object is not wanted */
+ if (!wholine)
+ wholine = find_wholine(who, wholen, buf, sz);
+ if (!wholine)
+ return;
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+
+ if (starts_with(name, "creatordate"))
+ grab_date(wholine, v, name);
+ else if (!strcmp(name, "creator"))
+ v->s = copy_line(wholine);
+ }
+}
+
+static void find_subpos(const char *buf, unsigned long sz,
+ const char **sub, unsigned long *sublen,
+ const char **body, unsigned long *bodylen,
+ unsigned long *nonsiglen,
+ const char **sig, unsigned long *siglen)
+{
+ const char *eol;
+ /* skip past header until we hit empty line */
+ while (*buf && *buf != '\n') {
+ eol = strchrnul(buf, '\n');
+ if (*eol)
+ eol++;
+ buf = eol;
+ }
+ /* skip any empty lines */
+ while (*buf == '\n')
+ buf++;
+
+ /* parse signature first; we might not even have a subject line */
+ *sig = buf + parse_signature(buf, strlen(buf));
+ *siglen = strlen(*sig);
+
+ /* subject is first non-empty line */
+ *sub = buf;
+ /* subject goes to first empty line */
+ while (buf < *sig && *buf && *buf != '\n') {
+ eol = strchrnul(buf, '\n');
+ if (*eol)
+ eol++;
+ buf = eol;
+ }
+ *sublen = buf - *sub;
+ /* drop trailing newline, if present */
+ if (*sublen && (*sub)[*sublen - 1] == '\n')
+ *sublen -= 1;
+
+ /* skip any empty lines */
+ while (*buf == '\n')
+ buf++;
+ *body = buf;
+ *bodylen = strlen(buf);
+ *nonsiglen = *sig - buf;
+}
+
+/* See grab_values */
+static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ int i;
+ const char *subpos = NULL, *bodypos = NULL, *sigpos = NULL;
+ unsigned long sublen = 0, bodylen = 0, nonsiglen = 0, siglen = 0;
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &val[i];
+ if (!!deref != (*name == '*'))
+ continue;
+ if (deref)
+ name++;
+ if (strcmp(name, "subject") &&
+ strcmp(name, "body") &&
+ strcmp(name, "contents") &&
+ strcmp(name, "contents:subject") &&
+ strcmp(name, "contents:body") &&
+ strcmp(name, "contents:signature"))
+ continue;
+ if (!subpos)
+ find_subpos(buf, sz,
+ &subpos, &sublen,
+ &bodypos, &bodylen, &nonsiglen,
+ &sigpos, &siglen);
+
+ if (!strcmp(name, "subject"))
+ v->s = copy_subject(subpos, sublen);
+ else if (!strcmp(name, "contents:subject"))
+ v->s = copy_subject(subpos, sublen);
+ else if (!strcmp(name, "body"))
+ v->s = xmemdupz(bodypos, bodylen);
+ else if (!strcmp(name, "contents:body"))
+ v->s = xmemdupz(bodypos, nonsiglen);
+ else if (!strcmp(name, "contents:signature"))
+ v->s = xmemdupz(sigpos, siglen);
+ else if (!strcmp(name, "contents"))
+ v->s = xstrdup(subpos);
+ }
+}
+
+/*
+ * We want to have empty print-string for field requests
+ * that do not apply (e.g. "authordate" for a tag object)
+ */
+static void fill_missing_values(struct atom_value *val)
+{
+ int i;
+ for (i = 0; i < used_atom_cnt; i++) {
+ struct atom_value *v = &val[i];
+ if (v->s == NULL)
+ v->s = "";
+ }
+}
+
+/*
+ * val is a list of atom_value to hold returned values. Extract
+ * the values for atoms in used_atom array out of (obj, buf, sz).
+ * when deref is false, (obj, buf, sz) is the object that is
+ * pointed at by the ref itself; otherwise it is the object the
+ * ref (which is a tag) refers to.
+ */
+static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
+{
+ grab_common_values(val, deref, obj, buf, sz);
+ switch (obj->type) {
+ case OBJ_TAG:
+ grab_tag_values(val, deref, obj, buf, sz);
+ grab_sub_body_contents(val, deref, obj, buf, sz);
+ grab_person("tagger", val, deref, obj, buf, sz);
+ break;
+ case OBJ_COMMIT:
+ grab_commit_values(val, deref, obj, buf, sz);
+ grab_sub_body_contents(val, deref, obj, buf, sz);
+ grab_person("author", val, deref, obj, buf, sz);
+ grab_person("committer", val, deref, obj, buf, sz);
+ break;
+ case OBJ_TREE:
+ /* grab_tree_values(val, deref, obj, buf, sz); */
+ break;
+ case OBJ_BLOB:
+ /* grab_blob_values(val, deref, obj, buf, sz); */
+ break;
+ default:
+ die("Eh? Object of type %d?", obj->type);
+ }
+}
+
+static inline char *copy_advance(char *dst, const char *src)
+{
+ while (*src)
+ *dst++ = *src++;
+ return dst;
+}
+
+/*
+ * Parse the object referred by ref, and grab needed value.
+ */
+static void populate_value(struct ref_array_item *ref)
+{
+ void *buf;
+ struct object *obj;
+ int eaten, i;
+ unsigned long size;
+ const unsigned char *tagged;
+
+ ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
+
+ if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
+ unsigned char unused1[20];
+ ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
+ unused1, NULL);
+ if (!ref->symref)
+ ref->symref = "";
+ }
+
+ /* Fill in specials first */
+ for (i = 0; i < used_atom_cnt; i++) {
+ const char *name = used_atom[i];
+ struct atom_value *v = &ref->value[i];
+ int deref = 0;
+ const char *refname;
+ const char *formatp;
+ struct branch *branch = NULL;
+
+ if (*name == '*') {
+ deref = 1;
+ name++;
+ }
+
+ if (starts_with(name, "refname"))
+ refname = ref->refname;
+ else if (starts_with(name, "symref"))
+ refname = ref->symref ? ref->symref : "";
+ else if (starts_with(name, "upstream")) {
+ const char *branch_name;
+ /* only local branches may have an upstream */
+ if (!skip_prefix(ref->refname, "refs/heads/",
+ &branch_name))
+ continue;
+ branch = branch_get(branch_name);
+
+ refname = branch_get_upstream(branch, NULL);
+ if (!refname)
+ continue;
+ } else if (starts_with(name, "push")) {
+ const char *branch_name;
+ if (!skip_prefix(ref->refname, "refs/heads/",
+ &branch_name))
+ continue;
+ branch = branch_get(branch_name);
+
+ refname = branch_get_push(branch, NULL);
+ if (!refname)
+ continue;
+ } else if (starts_with(name, "color:")) {
+ char color[COLOR_MAXLEN] = "";
+
+ if (color_parse(name + 6, color) < 0)
+ die(_("unable to parse format"));
+ v->s = xstrdup(color);
+ continue;
+ } else if (!strcmp(name, "flag")) {
+ char buf[256], *cp = buf;
+ if (ref->flag & REF_ISSYMREF)
+ cp = copy_advance(cp, ",symref");
+ if (ref->flag & REF_ISPACKED)
+ cp = copy_advance(cp, ",packed");
+ if (cp == buf)
+ v->s = "";
+ else {
+ *cp = '\0';
+ v->s = xstrdup(buf + 1);
+ }
+ continue;
+ } else if (!deref && grab_objectname(name, ref->objectname, v)) {
+ continue;
+ } else if (!strcmp(name, "HEAD")) {
+ const char *head;
+ unsigned char sha1[20];
+
+ head = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
+ sha1, NULL);
+ if (!strcmp(ref->refname, head))
+ v->s = "*";
+ else
+ v->s = " ";
+ continue;
+ } else
+ continue;
+
+ formatp = strchr(name, ':');
+ if (formatp) {
+ int num_ours, num_theirs;
+
+ formatp++;
+ if (!strcmp(formatp, "short"))
+ refname = shorten_unambiguous_ref(refname,
+ warn_ambiguous_refs);
+ else if (!strcmp(formatp, "track") &&
+ (starts_with(name, "upstream") ||
+ starts_with(name, "push"))) {
+ char buf[40];
+
+ if (stat_tracking_info(branch, &num_ours,
+ &num_theirs, NULL))
+ continue;
+
+ if (!num_ours && !num_theirs)
+ v->s = "";
+ else if (!num_ours) {
+ sprintf(buf, "[behind %d]", num_theirs);
+ v->s = xstrdup(buf);
+ } else if (!num_theirs) {
+ sprintf(buf, "[ahead %d]", num_ours);
+ v->s = xstrdup(buf);
+ } else {
+ sprintf(buf, "[ahead %d, behind %d]",
+ num_ours, num_theirs);
+ v->s = xstrdup(buf);
+ }
+ continue;
+ } else if (!strcmp(formatp, "trackshort") &&
+ (starts_with(name, "upstream") ||
+ starts_with(name, "push"))) {
+ assert(branch);
+
+ if (stat_tracking_info(branch, &num_ours,
+ &num_theirs, NULL))
+ continue;
+
+ if (!num_ours && !num_theirs)
+ v->s = "=";
+ else if (!num_ours)
+ v->s = "<";
+ else if (!num_theirs)
+ v->s = ">";
+ else
+ v->s = "<>";
+ continue;
+ } else
+ die("unknown %.*s format %s",
+ (int)(formatp - name), name, formatp);
+ }
+
+ if (!deref)
+ v->s = refname;
+ else {
+ int len = strlen(refname);
+ char *s = xmalloc(len + 4);
+ sprintf(s, "%s^{}", refname);
+ v->s = s;
+ }
+ }
+
+ for (i = 0; i < used_atom_cnt; i++) {
+ struct atom_value *v = &ref->value[i];
+ if (v->s == NULL)
+ goto need_obj;
+ }
+ return;
+
+ need_obj:
+ buf = get_obj(ref->objectname, &obj, &size, &eaten);
+ if (!buf)
+ die("missing object %s for %s",
+ sha1_to_hex(ref->objectname), ref->refname);
+ if (!obj)
+ die("parse_object_buffer failed on %s for %s",
+ sha1_to_hex(ref->objectname), ref->refname);
+
+ grab_values(ref->value, 0, obj, buf, size);
+ if (!eaten)
+ free(buf);
+
+ /*
+ * If there is no atom that wants to know about tagged
+ * object, we are done.
+ */
+ if (!need_tagged || (obj->type != OBJ_TAG))
+ return;
+
+ /*
+ * If it is a tag object, see if we use a value that derefs
+ * the object, and if we do grab the object it refers to.
+ */
+ tagged = ((struct tag *)obj)->tagged->sha1;
+
+ /*
+ * NEEDSWORK: This derefs tag only once, which
+ * is good to deal with chains of trust, but
+ * is not consistent with what deref_tag() does
+ * which peels the onion to the core.
+ */
+ buf = get_obj(tagged, &obj, &size, &eaten);
+ if (!buf)
+ die("missing object %s for %s",
+ sha1_to_hex(tagged), ref->refname);
+ if (!obj)
+ die("parse_object_buffer failed on %s for %s",
+ sha1_to_hex(tagged), ref->refname);
+ grab_values(ref->value, 1, obj, buf, size);
+ if (!eaten)
+ free(buf);
+}
+
+/*
+ * Given a ref, return the value for the atom. This lazily gets value
+ * out of the object by calling populate value.
+ */
+static void get_ref_atom_value(struct ref_array_item *ref, int atom, struct atom_value **v)
+{
+ if (!ref->value) {
+ populate_value(ref);
+ fill_missing_values(ref->value);
+ }
+ *v = &ref->value[atom];
+}
+
+/*
+ * Return 1 if the refname matches one of the patterns, otherwise 0.
+ * A pattern can be path prefix (e.g. a refname "refs/heads/master"
+ * matches a pattern "refs/heads/") or a wildcard (e.g. the same ref
+ * matches "refs/heads/m*",too).
+ */
+static int match_name_as_path(const char **pattern, const char *refname)
+{
+ int namelen = strlen(refname);
+ for (; *pattern; pattern++) {
+ const char *p = *pattern;
+ int plen = strlen(p);
+
+ if ((plen <= namelen) &&
+ !strncmp(refname, p, plen) &&
+ (refname[plen] == '\0' ||
+ refname[plen] == '/' ||
+ p[plen-1] == '/'))
+ return 1;
+ if (!wildmatch(p, refname, WM_PATHNAME, NULL))
+ return 1;
+ }
+ return 0;
+}
+
+/* Allocate space for a new ref_array_item and copy the objectname and flag to it */
+static struct ref_array_item *new_ref_array_item(const char *refname,
+ const unsigned char *objectname,
+ int flag)
+{
+ size_t len = strlen(refname);
+ struct ref_array_item *ref = xcalloc(1, sizeof(struct ref_array_item) + len + 1);
+ memcpy(ref->refname, refname, len);
+ ref->refname[len] = '\0';
+ hashcpy(ref->objectname, objectname);
+ ref->flag = flag;
+
+ return ref;
+}
+
+/*
+ * A call-back given to for_each_ref(). Filter refs and keep them for
+ * later object processing.
+ */
+static int ref_filter_handler(const char *refname, const struct object_id *oid, int flag, void *cb_data)
+{
+ struct ref_filter_cbdata *ref_cbdata = cb_data;
+ struct ref_filter *filter = ref_cbdata->filter;
+ struct ref_array_item *ref;
+
+ if (flag & REF_BAD_NAME) {
+ warning("ignoring ref with broken name %s", refname);
+ return 0;
+ }
+
+ if (flag & REF_ISBROKEN) {
+ warning("ignoring broken ref %s", refname);
+ return 0;
+ }
+
+ if (*filter->name_patterns && !match_name_as_path(filter->name_patterns, refname))
+ return 0;
+
+ /*
+ * We do not open the object yet; sort may only need refname
+ * to do its job and the resulting list may yet to be pruned
+ * by maxcount logic.
+ */
+ ref = new_ref_array_item(refname, oid->hash, flag);
+
+ REALLOC_ARRAY(ref_cbdata->array->items, ref_cbdata->array->nr + 1);
+ ref_cbdata->array->items[ref_cbdata->array->nr++] = ref;
+ return 0;
+}
+
+/* Free memory allocated for a ref_array_item */
+static void free_array_item(struct ref_array_item *item)
+{
+ free((char *)item->symref);
+ free(item);
+}
+
+/* Free all memory allocated for ref_array */
+void ref_array_clear(struct ref_array *array)
+{
+ int i;
+
+ for (i = 0; i < array->nr; i++)
+ free_array_item(array->items[i]);
+ free(array->items);
+ array->items = NULL;
+ array->nr = array->alloc = 0;
+}
+
+/*
+ * API for filtering a set of refs. Based on the type of refs the user
+ * has requested, we iterate through those refs and apply filters
+ * as per the given ref_filter structure and finally store the
+ * filtered refs in the ref_array structure.
+ */
+int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int type)
+{
+ struct ref_filter_cbdata ref_cbdata;
+
+ ref_cbdata.array = array;
+ ref_cbdata.filter = filter;
+
+ if (type & (FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN))
+ return for_each_rawref(ref_filter_handler, &ref_cbdata);
+ else if (type & FILTER_REFS_ALL)
+ return for_each_ref(ref_filter_handler, &ref_cbdata);
+ else
+ die("filter_refs: invalid type");
+ return 0;
+}
+
+static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
+{
+ struct atom_value *va, *vb;
+ int cmp;
+ cmp_type cmp_type = used_atom_type[s->atom];
+
+ get_ref_atom_value(a, s->atom, &va);
+ get_ref_atom_value(b, s->atom, &vb);
+ switch (cmp_type) {
+ case FIELD_STR:
+ cmp = strcmp(va->s, vb->s);
+ break;
+ default:
+ if (va->ul < vb->ul)
+ cmp = -1;
+ else if (va->ul == vb->ul)
+ cmp = 0;
+ else
+ cmp = 1;
+ break;
+ }
+ return (s->reverse) ? -cmp : cmp;
+}
+
+static struct ref_sorting *ref_sorting;
+static int compare_refs(const void *a_, const void *b_)
+{
+ struct ref_array_item *a = *((struct ref_array_item **)a_);
+ struct ref_array_item *b = *((struct ref_array_item **)b_);
+ struct ref_sorting *s;
+
+ for (s = ref_sorting; s; s = s->next) {
+ int cmp = cmp_ref_sorting(s, a, b);
+ if (cmp)
+ return cmp;
+ }
+ return 0;
+}
+
+void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
+{
+ ref_sorting = sorting;
+ qsort(array->items, array->nr, sizeof(struct ref_array_item *), compare_refs);
+}
+
+static void print_value(struct atom_value *v, int quote_style)
+{
+ struct strbuf sb = STRBUF_INIT;
+ switch (quote_style) {
+ case QUOTE_NONE:
+ fputs(v->s, stdout);
+ break;
+ case QUOTE_SHELL:
+ sq_quote_buf(&sb, v->s);
+ break;
+ case QUOTE_PERL:
+ perl_quote_buf(&sb, v->s);
+ break;
+ case QUOTE_PYTHON:
+ python_quote_buf(&sb, v->s);
+ break;
+ case QUOTE_TCL:
+ tcl_quote_buf(&sb, v->s);
+ break;
+ }
+ if (quote_style != QUOTE_NONE) {
+ fputs(sb.buf, stdout);
+ strbuf_release(&sb);
+ }
+}
+
+static int hex1(char ch)
+{
+ if ('0' <= ch && ch <= '9')
+ return ch - '0';
+ else if ('a' <= ch && ch <= 'f')
+ return ch - 'a' + 10;
+ else if ('A' <= ch && ch <= 'F')
+ return ch - 'A' + 10;
+ return -1;
+}
+static int hex2(const char *cp)
+{
+ if (cp[0] && cp[1])
+ return (hex1(cp[0]) << 4) | hex1(cp[1]);
+ else
+ return -1;
+}
+
+static void emit(const char *cp, const char *ep)
+{
+ while (*cp && (!ep || cp < ep)) {
+ if (*cp == '%') {
+ if (cp[1] == '%')
+ cp++;
+ else {
+ int ch = hex2(cp + 1);
+ if (0 <= ch) {
+ putchar(ch);
+ cp += 3;
+ continue;
+ }
+ }
+ }
+ putchar(*cp);
+ cp++;
+ }
+}
+
+void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
+{
+ const char *cp, *sp, *ep;
+
+ for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
+ struct atom_value *atomv;
+
+ ep = strchr(sp, ')');
+ if (cp < sp)
+ emit(cp, sp);
+ get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep), &atomv);
+ print_value(atomv, quote_style);
+ }
+ if (*cp) {
+ sp = cp + strlen(cp);
+ emit(cp, sp);
+ }
+ if (need_color_reset_at_eol) {
+ struct atom_value resetv;
+ char color[COLOR_MAXLEN] = "";
+
+ if (color_parse("reset", color) < 0)
+ die("BUG: couldn't parse 'reset' as a color");
+ resetv.s = color;
+ print_value(&resetv, quote_style);
+ }
+ putchar('\n');
+}
+
+/* If no sorting option is given, use refname to sort as default */
+struct ref_sorting *ref_default_sorting(void)
+{
+ static const char cstr_name[] = "refname";
+
+ struct ref_sorting *sorting = xcalloc(1, sizeof(*sorting));
+
+ sorting->next = NULL;
+ sorting->atom = parse_ref_filter_atom(cstr_name, cstr_name + strlen(cstr_name));
+ return sorting;
+}
+
+int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
+{
+ struct ref_sorting **sorting_tail = opt->value;
+ struct ref_sorting *s;
+ int len;
+
+ if (!arg) /* should --no-sort void the list ? */
+ return -1;
+
+ s = xcalloc(1, sizeof(*s));
+ s->next = *sorting_tail;
+ *sorting_tail = s;
+
+ if (*arg == '-') {
+ s->reverse = 1;
+ arg++;
+ }
+ len = strlen(arg);
+ s->atom = parse_ref_filter_atom(arg, arg+len);
+ return 0;
+}
return get_packed_ref_dir(get_packed_ref_cache(refs));
}
-void add_packed_ref(const char *refname, const unsigned char *sha1)
+/*
+ * Add a reference to the in-memory packed reference cache. This may
+ * only be called while the packed-refs file is locked (see
+ * lock_packed_refs()). To actually write the packed-refs file, call
+ * commit_packed_refs().
+ */
+static void add_packed_ref(const char *refname, const unsigned char *sha1)
{
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(&ref_cache);
return ret;
}
-char *resolve_refdup(const char *ref, int resolve_flags, unsigned char *sha1, int *flags)
+char *resolve_refdup(const char *refname, int resolve_flags,
+ unsigned char *sha1, int *flags)
{
- return xstrdup_or_null(resolve_ref_unsafe(ref, resolve_flags, sha1, flags));
+ return xstrdup_or_null(resolve_ref_unsafe(refname, resolve_flags,
+ sha1, flags));
}
/* The argument to filter_refs */
int for_each_replace_ref(each_ref_fn fn, void *cb_data)
{
- return do_for_each_ref(&ref_cache, "refs/replace/", fn, 13, 0, cb_data);
+ return do_for_each_ref(&ref_cache, git_replace_ref_base, fn,
+ strlen(git_replace_ref_base), 0, cb_data);
}
int head_ref_namespaced(each_ref_fn fn, void *cb_data)
return 0;
}
-/* This should return a meaningful errno on failure */
-int lock_packed_refs(int flags)
+/*
+ * Lock the packed-refs file for writing. Flags is passed to
+ * hold_lock_file_for_update(). Return 0 on success. On errors, set
+ * errno appropriately and return a nonzero value.
+ */
+static int lock_packed_refs(int flags)
{
static int timeout_configured = 0;
static int timeout_value = 1000;
}
/*
- * Commit the packed refs changes.
- * On error we must make sure that errno contains a meaningful value.
+ * Write the current version of the packed refs cache from memory to
+ * disk. The packed-refs file must already be locked for writing (see
+ * lock_packed_refs()). Return zero on success. On errors, set errno
+ * and return a nonzero value
*/
-int commit_packed_refs(void)
+static int commit_packed_refs(void)
{
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(&ref_cache);
return error;
}
-void rollback_packed_refs(void)
+/*
+ * Rollback the lockfile for the packed-refs file, and discard the
+ * in-memory packed reference cache. (The packed-refs file will be
+ * read anew if it is needed again after this function is called.)
+ */
+static void rollback_packed_refs(void)
{
struct packed_ref_cache *packed_ref_cache =
get_packed_ref_cache(&ref_cache);
return 0;
}
-int repack_without_refs(struct string_list *refnames, struct strbuf *err)
+/*
+ * Rewrite the packed-refs file, omitting any refs listed in
+ * 'refnames'. On error, leave packed-refs unchanged, write an error
+ * message to 'err', and return a nonzero value.
+ *
+ * The refs in 'refnames' needn't be sorted. `err` must not be NULL.
+ */
+static int repack_without_refs(struct string_list *refnames, struct strbuf *err)
{
struct ref_dir *packed;
struct string_list_item *refname;
return 0;
}
-int delete_ref(const char *refname, const unsigned char *sha1, unsigned int flags)
+int delete_ref(const char *refname, const unsigned char *old_sha1,
+ unsigned int flags)
{
struct ref_transaction *transaction;
struct strbuf err = STRBUF_INIT;
transaction = ref_transaction_begin(&err);
if (!transaction ||
- ref_transaction_delete(transaction, refname,
- (sha1 && !is_null_sha1(sha1)) ? sha1 : NULL,
+ ref_transaction_delete(transaction, refname, old_sha1,
flags, NULL, &err) ||
ref_transaction_commit(transaction, &err)) {
error("%s", err.buf);
return 0;
}
+int delete_refs(struct string_list *refnames)
+{
+ struct strbuf err = STRBUF_INIT;
+ int i, result = 0;
+
+ if (!refnames->nr)
+ return 0;
+
+ result = repack_without_refs(refnames, &err);
+ if (result) {
+ /*
+ * If we failed to rewrite the packed-refs file, then
+ * it is unsafe to try to remove loose refs, because
+ * doing so might expose an obsolete packed value for
+ * a reference that might even point at an object that
+ * has been garbage collected.
+ */
+ if (refnames->nr == 1)
+ error(_("could not delete reference %s: %s"),
+ refnames->items[0].string, err.buf);
+ else
+ error(_("could not delete references: %s"), err.buf);
+
+ goto out;
+ }
+
+ for (i = 0; i < refnames->nr; i++) {
+ const char *refname = refnames->items[i].string;
+
+ if (delete_ref(refname, NULL, 0))
+ result |= error(_("could not remove reference %s"), refname);
+ }
+
+out:
+ strbuf_release(&err);
+ return result;
+}
+
/*
* People using contrib's git-new-workdir have .git/logs/refs ->
* /some/other/path/.git/logs/refs, and that may live on another device.
hashcpy(cb->sha1, nsha1);
if (hashcmp(cb->osha1, nsha1))
warning("Log for ref %s has gap after %s.",
- cb->refname, show_date(cb->date, cb->tz, DATE_RFC2822));
+ cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822)));
}
else if (cb->date == cb->at_time)
hashcpy(cb->sha1, nsha1);
else if (hashcmp(nsha1, cb->sha1))
warning("Log for ref %s unexpectedly ended on %s.",
cb->refname, show_date(cb->date, cb->tz,
- DATE_RFC2822));
+ DATE_MODE(RFC2822)));
hashcpy(cb->osha1, osha1);
hashcpy(cb->nsha1, nsha1);
cb->found_it = 1;
return ret;
}
+static int ref_present(const char *refname,
+ const struct object_id *oid, int flags, void *cb_data)
+{
+ struct string_list *affected_refnames = cb_data;
+
+ return string_list_has_string(affected_refnames, refname);
+}
+
+int initial_ref_transaction_commit(struct ref_transaction *transaction,
+ struct strbuf *err)
+{
+ struct ref_dir *loose_refs = get_loose_refs(&ref_cache);
+ struct ref_dir *packed_refs = get_packed_refs(&ref_cache);
+ int ret = 0, i;
+ int n = transaction->nr;
+ struct ref_update **updates = transaction->updates;
+ struct string_list affected_refnames = STRING_LIST_INIT_NODUP;
+
+ assert(err);
+
+ if (transaction->state != REF_TRANSACTION_OPEN)
+ die("BUG: commit called for transaction that is not open");
+
+ /* Fail if a refname appears more than once in the transaction: */
+ for (i = 0; i < n; i++)
+ string_list_append(&affected_refnames, updates[i]->refname);
+ string_list_sort(&affected_refnames);
+ if (ref_update_reject_duplicates(&affected_refnames, err)) {
+ ret = TRANSACTION_GENERIC_ERROR;
+ goto cleanup;
+ }
+
+ /*
+ * It's really undefined to call this function in an active
+ * repository or when there are existing references: we are
+ * only locking and changing packed-refs, so (1) any
+ * simultaneous processes might try to change a reference at
+ * the same time we do, and (2) any existing loose versions of
+ * the references that we are setting would have precedence
+ * over our values. But some remote helpers create the remote
+ * "HEAD" and "master" branches before calling this function,
+ * so here we really only check that none of the references
+ * that we are creating already exists.
+ */
+ if (for_each_rawref(ref_present, &affected_refnames))
+ die("BUG: initial ref transaction called with existing refs");
+
+ for (i = 0; i < n; i++) {
+ struct ref_update *update = updates[i];
+
+ if ((update->flags & REF_HAVE_OLD) &&
+ !is_null_sha1(update->old_sha1))
+ die("BUG: initial ref transaction with old_sha1 set");
+ if (verify_refname_available(update->refname,
+ &affected_refnames, NULL,
+ loose_refs, err) ||
+ verify_refname_available(update->refname,
+ &affected_refnames, NULL,
+ packed_refs, err)) {
+ ret = TRANSACTION_NAME_CONFLICT;
+ goto cleanup;
+ }
+ }
+
+ if (lock_packed_refs(0)) {
+ strbuf_addf(err, "unable to lock packed-refs file: %s",
+ strerror(errno));
+ ret = TRANSACTION_GENERIC_ERROR;
+ goto cleanup;
+ }
+
+ for (i = 0; i < n; i++) {
+ struct ref_update *update = updates[i];
+
+ if ((update->flags & REF_HAVE_NEW) &&
+ !is_null_sha1(update->new_sha1))
+ add_packed_ref(update->refname, update->new_sha1);
+ }
+
+ if (commit_packed_refs()) {
+ strbuf_addf(err, "unable to commit packed-refs file: %s",
+ strerror(errno));
+ ret = TRANSACTION_GENERIC_ERROR;
+ goto cleanup;
+ }
+
+cleanup:
+ transaction->state = REF_TRANSACTION_CLOSED;
+ string_list_clear(&affected_refnames, 0);
+ return ret;
+}
+
char *shorten_unambiguous_ref(const char *refname, int strict)
{
int i;