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ref-filter.c
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#include "builtin.h"
#include "cache.h"
#include "parse-options.h"
#include "refs.h"
#include "wildmatch.h"
#include "object-store.h"
#include "repository.h"
#include "commit.h"
#include "remote.h"
#include "color.h"
#include "tag.h"
#include "quote.h"
#include "ref-filter.h"
#include "revision.h"
#include "utf8.h"
#include "git-compat-util.h"
#include "version.h"
#include "trailer.h"
#include "wt-status.h"
#include "commit-slab.h"
#include "commit-graph.h"
#include "commit-reach.h"
#include "worktree.h"
#include "hashmap.h"
#include "strvec.h"
static struct ref_msg {
const char *gone;
const char *ahead;
const char *behind;
const char *ahead_behind;
} msgs = {
/* Untranslated plumbing messages: */
"gone",
"ahead %d",
"behind %d",
"ahead %d, behind %d"
};
void setup_ref_filter_porcelain_msg(void)
{
msgs.gone = _("gone");
msgs.ahead = _("ahead %d");
msgs.behind = _("behind %d");
msgs.ahead_behind = _("ahead %d, behind %d");
}
typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
typedef enum { COMPARE_EQUAL, COMPARE_UNEQUAL, COMPARE_NONE } cmp_status;
typedef enum { SOURCE_NONE = 0, SOURCE_OBJ, SOURCE_OTHER } info_source;
struct align {
align_type position;
unsigned int width;
};
struct if_then_else {
cmp_status cmp_status;
const char *str;
unsigned int then_atom_seen : 1,
else_atom_seen : 1,
condition_satisfied : 1;
};
struct refname_atom {
enum { R_NORMAL, R_SHORT, R_LSTRIP, R_RSTRIP } option;
int lstrip, rstrip;
};
static struct ref_trailer_buf {
struct string_list filter_list;
struct strbuf sepbuf;
struct strbuf kvsepbuf;
} ref_trailer_buf = {STRING_LIST_INIT_NODUP, STRBUF_INIT, STRBUF_INIT};
static struct expand_data {
struct object_id oid;
enum object_type type;
unsigned long size;
off_t disk_size;
struct object_id delta_base_oid;
void *content;
struct object_info info;
} oi, oi_deref;
struct ref_to_worktree_entry {
struct hashmap_entry ent;
struct worktree *wt; /* key is wt->head_ref */
};
static int ref_to_worktree_map_cmpfnc(const void *unused_lookupdata,
const struct hashmap_entry *eptr,
const struct hashmap_entry *kptr,
const void *keydata_aka_refname)
{
const struct ref_to_worktree_entry *e, *k;
e = container_of(eptr, const struct ref_to_worktree_entry, ent);
k = container_of(kptr, const struct ref_to_worktree_entry, ent);
return strcmp(e->wt->head_ref,
keydata_aka_refname ? keydata_aka_refname : k->wt->head_ref);
}
static struct ref_to_worktree_map {
struct hashmap map;
struct worktree **worktrees;
} ref_to_worktree_map;
/*
* An atom is a valid field atom listed below, 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 struct used_atom {
const char *name;
cmp_type type;
info_source source;
union {
char color[COLOR_MAXLEN];
struct align align;
struct {
enum {
RR_REF, RR_TRACK, RR_TRACKSHORT, RR_REMOTE_NAME, RR_REMOTE_REF
} option;
struct refname_atom refname;
unsigned int nobracket : 1, push : 1, push_remote : 1;
} remote_ref;
struct {
enum { C_BARE, C_BODY, C_BODY_DEP, C_LENGTH, C_LINES,
C_SIG, C_SUB, C_SUB_SANITIZE, C_TRAILERS } option;
struct process_trailer_options trailer_opts;
unsigned int nlines;
} contents;
struct {
cmp_status cmp_status;
const char *str;
} if_then_else;
struct {
enum { O_FULL, O_LENGTH, O_SHORT } option;
unsigned int length;
} oid;
struct email_option {
enum { EO_RAW, EO_TRIM, EO_LOCALPART } option;
} email_option;
struct refname_atom refname;
char *head;
} u;
} *used_atom;
static int used_atom_cnt, need_tagged, need_symref;
/*
* Expand string, append it to strbuf *sb, then return error code ret.
* Allow to save few lines of code.
*/
static int strbuf_addf_ret(struct strbuf *sb, int ret, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
strbuf_vaddf(sb, fmt, ap);
va_end(ap);
return ret;
}
static int color_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *color_value, struct strbuf *err)
{
if (!color_value)
return strbuf_addf_ret(err, -1, _("expected format: %%(color:<color>)"));
if (color_parse(color_value, atom->u.color) < 0)
return strbuf_addf_ret(err, -1, _("unrecognized color: %%(color:%s)"),
color_value);
/*
* We check this after we've parsed the color, which lets us complain
* about syntactically bogus color names even if they won't be used.
*/
if (!want_color(format->use_color))
color_parse("", atom->u.color);
return 0;
}
static int refname_atom_parser_internal(struct refname_atom *atom, const char *arg,
const char *name, struct strbuf *err)
{
if (!arg)
atom->option = R_NORMAL;
else if (!strcmp(arg, "short"))
atom->option = R_SHORT;
else if (skip_prefix(arg, "lstrip=", &arg) ||
skip_prefix(arg, "strip=", &arg)) {
atom->option = R_LSTRIP;
if (strtol_i(arg, 10, &atom->lstrip))
return strbuf_addf_ret(err, -1, _("Integer value expected refname:lstrip=%s"), arg);
} else if (skip_prefix(arg, "rstrip=", &arg)) {
atom->option = R_RSTRIP;
if (strtol_i(arg, 10, &atom->rstrip))
return strbuf_addf_ret(err, -1, _("Integer value expected refname:rstrip=%s"), arg);
} else
return strbuf_addf_ret(err, -1, _("unrecognized %%(%s) argument: %s"), name, arg);
return 0;
}
static int remote_ref_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
struct string_list params = STRING_LIST_INIT_DUP;
int i;
if (!strcmp(atom->name, "push") || starts_with(atom->name, "push:"))
atom->u.remote_ref.push = 1;
if (!arg) {
atom->u.remote_ref.option = RR_REF;
return refname_atom_parser_internal(&atom->u.remote_ref.refname,
arg, atom->name, err);
}
atom->u.remote_ref.nobracket = 0;
string_list_split(¶ms, arg, ',', -1);
for (i = 0; i < params.nr; i++) {
const char *s = params.items[i].string;
if (!strcmp(s, "track"))
atom->u.remote_ref.option = RR_TRACK;
else if (!strcmp(s, "trackshort"))
atom->u.remote_ref.option = RR_TRACKSHORT;
else if (!strcmp(s, "nobracket"))
atom->u.remote_ref.nobracket = 1;
else if (!strcmp(s, "remotename")) {
atom->u.remote_ref.option = RR_REMOTE_NAME;
atom->u.remote_ref.push_remote = 1;
} else if (!strcmp(s, "remoteref")) {
atom->u.remote_ref.option = RR_REMOTE_REF;
atom->u.remote_ref.push_remote = 1;
} else {
atom->u.remote_ref.option = RR_REF;
if (refname_atom_parser_internal(&atom->u.remote_ref.refname,
arg, atom->name, err)) {
string_list_clear(¶ms, 0);
return -1;
}
}
}
string_list_clear(¶ms, 0);
return 0;
}
static int objecttype_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (arg)
return strbuf_addf_ret(err, -1, _("%%(objecttype) does not take arguments"));
if (*atom->name == '*')
oi_deref.info.typep = &oi_deref.type;
else
oi.info.typep = &oi.type;
return 0;
}
static int objectsize_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg) {
if (*atom->name == '*')
oi_deref.info.sizep = &oi_deref.size;
else
oi.info.sizep = &oi.size;
} else if (!strcmp(arg, "disk")) {
if (*atom->name == '*')
oi_deref.info.disk_sizep = &oi_deref.disk_size;
else
oi.info.disk_sizep = &oi.disk_size;
} else
return strbuf_addf_ret(err, -1, _("unrecognized %%(objectsize) argument: %s"), arg);
return 0;
}
static int deltabase_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (arg)
return strbuf_addf_ret(err, -1, _("%%(deltabase) does not take arguments"));
if (*atom->name == '*')
oi_deref.info.delta_base_oid = &oi_deref.delta_base_oid;
else
oi.info.delta_base_oid = &oi.delta_base_oid;
return 0;
}
static int body_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (arg)
return strbuf_addf_ret(err, -1, _("%%(body) does not take arguments"));
atom->u.contents.option = C_BODY_DEP;
return 0;
}
static int subject_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg)
atom->u.contents.option = C_SUB;
else if (!strcmp(arg, "sanitize"))
atom->u.contents.option = C_SUB_SANITIZE;
else
return strbuf_addf_ret(err, -1, _("unrecognized %%(subject) argument: %s"), arg);
return 0;
}
static int trailers_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
atom->u.contents.trailer_opts.no_divider = 1;
if (arg) {
const char *argbuf = xstrfmt("%s)", arg);
char *invalid_arg = NULL;
if (format_set_trailers_options(&atom->u.contents.trailer_opts,
&ref_trailer_buf.filter_list,
&ref_trailer_buf.sepbuf,
&ref_trailer_buf.kvsepbuf,
&argbuf, &invalid_arg)) {
if (!invalid_arg)
strbuf_addf(err, _("expected %%(trailers:key=<value>)"));
else
strbuf_addf(err, _("unknown %%(trailers) argument: %s"), invalid_arg);
free((char *)invalid_arg);
return -1;
}
}
atom->u.contents.option = C_TRAILERS;
return 0;
}
static int contents_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg)
atom->u.contents.option = C_BARE;
else if (!strcmp(arg, "body"))
atom->u.contents.option = C_BODY;
else if (!strcmp(arg, "size"))
atom->u.contents.option = C_LENGTH;
else if (!strcmp(arg, "signature"))
atom->u.contents.option = C_SIG;
else if (!strcmp(arg, "subject"))
atom->u.contents.option = C_SUB;
else if (!strcmp(arg, "trailers")) {
if (trailers_atom_parser(format, atom, NULL, err))
return -1;
} else if (skip_prefix(arg, "trailers:", &arg)) {
if (trailers_atom_parser(format, atom, arg, err))
return -1;
} else if (skip_prefix(arg, "lines=", &arg)) {
atom->u.contents.option = C_LINES;
if (strtoul_ui(arg, 10, &atom->u.contents.nlines))
return strbuf_addf_ret(err, -1, _("positive value expected contents:lines=%s"), arg);
} else
return strbuf_addf_ret(err, -1, _("unrecognized %%(contents) argument: %s"), arg);
return 0;
}
static int oid_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg)
atom->u.oid.option = O_FULL;
else if (!strcmp(arg, "short"))
atom->u.oid.option = O_SHORT;
else if (skip_prefix(arg, "short=", &arg)) {
atom->u.oid.option = O_LENGTH;
if (strtoul_ui(arg, 10, &atom->u.oid.length) ||
atom->u.oid.length == 0)
return strbuf_addf_ret(err, -1, _("positive value expected '%s' in %%(%s)"), arg, atom->name);
if (atom->u.oid.length < MINIMUM_ABBREV)
atom->u.oid.length = MINIMUM_ABBREV;
} else
return strbuf_addf_ret(err, -1, _("unrecognized argument '%s' in %%(%s)"), arg, atom->name);
return 0;
}
static int person_email_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg)
atom->u.email_option.option = EO_RAW;
else if (!strcmp(arg, "trim"))
atom->u.email_option.option = EO_TRIM;
else if (!strcmp(arg, "localpart"))
atom->u.email_option.option = EO_LOCALPART;
else
return strbuf_addf_ret(err, -1, _("unrecognized email option: %s"), arg);
return 0;
}
static int refname_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
return refname_atom_parser_internal(&atom->u.refname, arg, atom->name, err);
}
static align_type parse_align_position(const char *s)
{
if (!strcmp(s, "right"))
return ALIGN_RIGHT;
else if (!strcmp(s, "middle"))
return ALIGN_MIDDLE;
else if (!strcmp(s, "left"))
return ALIGN_LEFT;
return -1;
}
static int align_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
struct align *align = &atom->u.align;
struct string_list params = STRING_LIST_INIT_DUP;
int i;
unsigned int width = ~0U;
if (!arg)
return strbuf_addf_ret(err, -1, _("expected format: %%(align:<width>,<position>)"));
align->position = ALIGN_LEFT;
string_list_split(¶ms, arg, ',', -1);
for (i = 0; i < params.nr; i++) {
const char *s = params.items[i].string;
int position;
if (skip_prefix(s, "position=", &s)) {
position = parse_align_position(s);
if (position < 0) {
strbuf_addf(err, _("unrecognized position:%s"), s);
string_list_clear(¶ms, 0);
return -1;
}
align->position = position;
} else if (skip_prefix(s, "width=", &s)) {
if (strtoul_ui(s, 10, &width)) {
strbuf_addf(err, _("unrecognized width:%s"), s);
string_list_clear(¶ms, 0);
return -1;
}
} else if (!strtoul_ui(s, 10, &width))
;
else if ((position = parse_align_position(s)) >= 0)
align->position = position;
else {
strbuf_addf(err, _("unrecognized %%(align) argument: %s"), s);
string_list_clear(¶ms, 0);
return -1;
}
}
if (width == ~0U) {
string_list_clear(¶ms, 0);
return strbuf_addf_ret(err, -1, _("positive width expected with the %%(align) atom"));
}
align->width = width;
string_list_clear(¶ms, 0);
return 0;
}
static int if_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err)
{
if (!arg) {
atom->u.if_then_else.cmp_status = COMPARE_NONE;
return 0;
} else if (skip_prefix(arg, "equals=", &atom->u.if_then_else.str)) {
atom->u.if_then_else.cmp_status = COMPARE_EQUAL;
} else if (skip_prefix(arg, "notequals=", &atom->u.if_then_else.str)) {
atom->u.if_then_else.cmp_status = COMPARE_UNEQUAL;
} else
return strbuf_addf_ret(err, -1, _("unrecognized %%(if) argument: %s"), arg);
return 0;
}
static int head_atom_parser(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *unused_err)
{
atom->u.head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
return 0;
}
static struct {
const char *name;
info_source source;
cmp_type cmp_type;
int (*parser)(const struct ref_format *format, struct used_atom *atom,
const char *arg, struct strbuf *err);
} valid_atom[] = {
{ "refname", SOURCE_NONE, FIELD_STR, refname_atom_parser },
{ "objecttype", SOURCE_OTHER, FIELD_STR, objecttype_atom_parser },
{ "objectsize", SOURCE_OTHER, FIELD_ULONG, objectsize_atom_parser },
{ "objectname", SOURCE_OTHER, FIELD_STR, oid_atom_parser },
{ "deltabase", SOURCE_OTHER, FIELD_STR, deltabase_atom_parser },
{ "tree", SOURCE_OBJ, FIELD_STR, oid_atom_parser },
{ "parent", SOURCE_OBJ, FIELD_STR, oid_atom_parser },
{ "numparent", SOURCE_OBJ, FIELD_ULONG },
{ "object", SOURCE_OBJ },
{ "type", SOURCE_OBJ },
{ "tag", SOURCE_OBJ },
{ "author", SOURCE_OBJ },
{ "authorname", SOURCE_OBJ },
{ "authoremail", SOURCE_OBJ, FIELD_STR, person_email_atom_parser },
{ "authordate", SOURCE_OBJ, FIELD_TIME },
{ "committer", SOURCE_OBJ },
{ "committername", SOURCE_OBJ },
{ "committeremail", SOURCE_OBJ, FIELD_STR, person_email_atom_parser },
{ "committerdate", SOURCE_OBJ, FIELD_TIME },
{ "tagger", SOURCE_OBJ },
{ "taggername", SOURCE_OBJ },
{ "taggeremail", SOURCE_OBJ, FIELD_STR, person_email_atom_parser },
{ "taggerdate", SOURCE_OBJ, FIELD_TIME },
{ "creator", SOURCE_OBJ },
{ "creatordate", SOURCE_OBJ, FIELD_TIME },
{ "subject", SOURCE_OBJ, FIELD_STR, subject_atom_parser },
{ "body", SOURCE_OBJ, FIELD_STR, body_atom_parser },
{ "trailers", SOURCE_OBJ, FIELD_STR, trailers_atom_parser },
{ "contents", SOURCE_OBJ, FIELD_STR, contents_atom_parser },
{ "upstream", SOURCE_NONE, FIELD_STR, remote_ref_atom_parser },
{ "push", SOURCE_NONE, FIELD_STR, remote_ref_atom_parser },
{ "symref", SOURCE_NONE, FIELD_STR, refname_atom_parser },
{ "flag", SOURCE_NONE },
{ "HEAD", SOURCE_NONE, FIELD_STR, head_atom_parser },
{ "color", SOURCE_NONE, FIELD_STR, color_atom_parser },
{ "worktreepath", SOURCE_NONE },
{ "align", SOURCE_NONE, FIELD_STR, align_atom_parser },
{ "end", SOURCE_NONE },
{ "if", SOURCE_NONE, FIELD_STR, if_atom_parser },
{ "then", SOURCE_NONE },
{ "else", SOURCE_NONE },
/*
* Please update $__git_ref_fieldlist in git-completion.bash
* when you add new atoms
*/
};
#define REF_FORMATTING_STATE_INIT { 0, NULL }
struct ref_formatting_stack {
struct ref_formatting_stack *prev;
struct strbuf output;
void (*at_end)(struct ref_formatting_stack **stack);
void *at_end_data;
};
struct ref_formatting_state {
int quote_style;
struct ref_formatting_stack *stack;
};
struct atom_value {
const char *s;
int (*handler)(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *err);
uintmax_t value; /* used for sorting when not FIELD_STR */
struct used_atom *atom;
};
/*
* Used to parse format string and sort specifiers
*/
static int parse_ref_filter_atom(const struct ref_format *format,
const char *atom, const char *ep,
struct strbuf *err)
{
const char *sp;
const char *arg;
int i, at, atom_len;
sp = atom;
if (*sp == '*' && sp < ep)
sp++; /* deref */
if (ep <= sp)
return strbuf_addf_ret(err, -1, _("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].name);
if (len == ep - atom && !memcmp(used_atom[i].name, atom, len))
return i;
}
/*
* 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.
*/
arg = memchr(sp, ':', ep - sp);
atom_len = (arg ? arg : ep) - sp;
/* Is the atom a valid one? */
for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
int len = strlen(valid_atom[i].name);
if (len == atom_len && !memcmp(valid_atom[i].name, sp, len))
break;
}
if (ARRAY_SIZE(valid_atom) <= i)
return strbuf_addf_ret(err, -1, _("unknown field name: %.*s"),
(int)(ep-atom), atom);
if (valid_atom[i].source != SOURCE_NONE && !have_git_dir())
return strbuf_addf_ret(err, -1,
_("not a git repository, but the field '%.*s' requires access to object data"),
(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);
used_atom[at].name = xmemdupz(atom, ep - atom);
used_atom[at].type = valid_atom[i].cmp_type;
used_atom[at].source = valid_atom[i].source;
if (used_atom[at].source == SOURCE_OBJ) {
if (*atom == '*')
oi_deref.info.contentp = &oi_deref.content;
else
oi.info.contentp = &oi.content;
}
if (arg) {
arg = used_atom[at].name + (arg - atom) + 1;
if (!*arg) {
/*
* Treat empty sub-arguments list as NULL (i.e.,
* "%(atom:)" is equivalent to "%(atom)").
*/
arg = NULL;
}
}
memset(&used_atom[at].u, 0, sizeof(used_atom[at].u));
if (valid_atom[i].parser && valid_atom[i].parser(format, &used_atom[at], arg, err))
return -1;
if (*atom == '*')
need_tagged = 1;
if (!strcmp(valid_atom[i].name, "symref"))
need_symref = 1;
return at;
}
static void quote_formatting(struct strbuf *s, const char *str, int quote_style)
{
switch (quote_style) {
case QUOTE_NONE:
strbuf_addstr(s, str);
break;
case QUOTE_SHELL:
sq_quote_buf(s, str);
break;
case QUOTE_PERL:
perl_quote_buf(s, str);
break;
case QUOTE_PYTHON:
python_quote_buf(s, str);
break;
case QUOTE_TCL:
tcl_quote_buf(s, str);
break;
}
}
static int append_atom(struct atom_value *v, struct ref_formatting_state *state,
struct strbuf *unused_err)
{
/*
* Quote formatting is only done when the stack has a single
* element. Otherwise quote formatting is done on the
* element's entire output strbuf when the %(end) atom is
* encountered.
*/
if (!state->stack->prev)
quote_formatting(&state->stack->output, v->s, state->quote_style);
else
strbuf_addstr(&state->stack->output, v->s);
return 0;
}
static void push_stack_element(struct ref_formatting_stack **stack)
{
struct ref_formatting_stack *s = xcalloc(1, sizeof(struct ref_formatting_stack));
strbuf_init(&s->output, 0);
s->prev = *stack;
*stack = s;
}
static void pop_stack_element(struct ref_formatting_stack **stack)
{
struct ref_formatting_stack *current = *stack;
struct ref_formatting_stack *prev = current->prev;
if (prev)
strbuf_addbuf(&prev->output, ¤t->output);
strbuf_release(¤t->output);
free(current);
*stack = prev;
}
static void end_align_handler(struct ref_formatting_stack **stack)
{
struct ref_formatting_stack *cur = *stack;
struct align *align = (struct align *)cur->at_end_data;
struct strbuf s = STRBUF_INIT;
strbuf_utf8_align(&s, align->position, align->width, cur->output.buf);
strbuf_swap(&cur->output, &s);
strbuf_release(&s);
}
static int align_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *unused_err)
{
struct ref_formatting_stack *new_stack;
push_stack_element(&state->stack);
new_stack = state->stack;
new_stack->at_end = end_align_handler;
new_stack->at_end_data = &atomv->atom->u.align;
return 0;
}
static void if_then_else_handler(struct ref_formatting_stack **stack)
{
struct ref_formatting_stack *cur = *stack;
struct ref_formatting_stack *prev = cur->prev;
struct if_then_else *if_then_else = (struct if_then_else *)cur->at_end_data;
if (!if_then_else->then_atom_seen)
die(_("format: %%(if) atom used without a %%(then) atom"));
if (if_then_else->else_atom_seen) {
/*
* There is an %(else) atom: we need to drop one state from the
* stack, either the %(else) branch if the condition is satisfied, or
* the %(then) branch if it isn't.
*/
if (if_then_else->condition_satisfied) {
strbuf_reset(&cur->output);
pop_stack_element(&cur);
} else {
strbuf_swap(&cur->output, &prev->output);
strbuf_reset(&cur->output);
pop_stack_element(&cur);
}
} else if (!if_then_else->condition_satisfied) {
/*
* No %(else) atom: just drop the %(then) branch if the
* condition is not satisfied.
*/
strbuf_reset(&cur->output);
}
*stack = cur;
free(if_then_else);
}
static int if_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *unused_err)
{
struct ref_formatting_stack *new_stack;
struct if_then_else *if_then_else = xcalloc(1,
sizeof(struct if_then_else));
if_then_else->str = atomv->atom->u.if_then_else.str;
if_then_else->cmp_status = atomv->atom->u.if_then_else.cmp_status;
push_stack_element(&state->stack);
new_stack = state->stack;
new_stack->at_end = if_then_else_handler;
new_stack->at_end_data = if_then_else;
return 0;
}
static int is_empty(const char *s)
{
while (*s != '\0') {
if (!isspace(*s))
return 0;
s++;
}
return 1;
}
static int then_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *err)
{
struct ref_formatting_stack *cur = state->stack;
struct if_then_else *if_then_else = NULL;
if (cur->at_end == if_then_else_handler)
if_then_else = (struct if_then_else *)cur->at_end_data;
if (!if_then_else)
return strbuf_addf_ret(err, -1, _("format: %%(then) atom used without an %%(if) atom"));
if (if_then_else->then_atom_seen)
return strbuf_addf_ret(err, -1, _("format: %%(then) atom used more than once"));
if (if_then_else->else_atom_seen)
return strbuf_addf_ret(err, -1, _("format: %%(then) atom used after %%(else)"));
if_then_else->then_atom_seen = 1;
/*
* If the 'equals' or 'notequals' attribute is used then
* perform the required comparison. If not, only non-empty
* strings satisfy the 'if' condition.
*/
if (if_then_else->cmp_status == COMPARE_EQUAL) {
if (!strcmp(if_then_else->str, cur->output.buf))
if_then_else->condition_satisfied = 1;
} else if (if_then_else->cmp_status == COMPARE_UNEQUAL) {
if (strcmp(if_then_else->str, cur->output.buf))
if_then_else->condition_satisfied = 1;
} else if (cur->output.len && !is_empty(cur->output.buf))
if_then_else->condition_satisfied = 1;
strbuf_reset(&cur->output);
return 0;
}
static int else_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *err)
{
struct ref_formatting_stack *prev = state->stack;
struct if_then_else *if_then_else = NULL;
if (prev->at_end == if_then_else_handler)
if_then_else = (struct if_then_else *)prev->at_end_data;
if (!if_then_else)
return strbuf_addf_ret(err, -1, _("format: %%(else) atom used without an %%(if) atom"));
if (!if_then_else->then_atom_seen)
return strbuf_addf_ret(err, -1, _("format: %%(else) atom used without a %%(then) atom"));
if (if_then_else->else_atom_seen)
return strbuf_addf_ret(err, -1, _("format: %%(else) atom used more than once"));
if_then_else->else_atom_seen = 1;
push_stack_element(&state->stack);
state->stack->at_end_data = prev->at_end_data;
state->stack->at_end = prev->at_end;
return 0;
}
static int end_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
struct strbuf *err)
{
struct ref_formatting_stack *current = state->stack;
struct strbuf s = STRBUF_INIT;
if (!current->at_end)
return strbuf_addf_ret(err, -1, _("format: %%(end) atom used without corresponding atom"));
current->at_end(&state->stack);
/* Stack may have been popped within at_end(), hence reset the current pointer */
current = state->stack;
/*
* Perform quote formatting when the stack element is that of
* a supporting atom. If nested then perform quote formatting
* only on the topmost supporting atom.
*/
if (!current->prev->prev) {
quote_formatting(&s, current->output.buf, state->quote_style);
strbuf_swap(¤t->output, &s);
}
strbuf_release(&s);
pop_stack_element(&state->stack);
return 0;
}
/*
* 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(struct ref_format *format)
{
const char *cp, *sp;
format->need_color_reset_at_eol = 0;
for (cp = format->format; *cp && (sp = find_next(cp)); ) {
struct strbuf err = STRBUF_INIT;
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(format, sp + 2, ep, &err);
if (at < 0)
die("%s", err.buf);
cp = ep + 1;
if (skip_prefix(used_atom[at].name, "color:", &color))
format->need_color_reset_at_eol = !!strcmp(color, "reset");
strbuf_release(&err);
}
if (format->need_color_reset_at_eol && !want_color(format->use_color))
format->need_color_reset_at_eol = 0;
return 0;
}
static const char *do_grab_oid(const char *field, const struct object_id *oid,
struct used_atom *atom)
{
switch (atom->u.oid.option) {
case O_FULL:
return oid_to_hex(oid);
case O_LENGTH:
return find_unique_abbrev(oid, atom->u.oid.length);
case O_SHORT:
return find_unique_abbrev(oid, DEFAULT_ABBREV);
default:
BUG("unknown %%(%s) option", field);
}
}
static int grab_oid(const char *name, const char *field, const struct object_id *oid,
struct atom_value *v, struct used_atom *atom)
{
if (starts_with(name, field)) {
v->s = xstrdup(do_grab_oid(field, oid, atom));
return 1;
}
return 0;
}
/* See grab_values */
static void grab_common_values(struct atom_value *val, int deref, struct expand_data *oi)
{
int i;
for (i = 0; i < used_atom_cnt; i++) {
const char *name = used_atom[i].name;
struct atom_value *v = &val[i];
if (!!deref != (*name == '*'))
continue;
if (deref)
name++;
if (!strcmp(name, "objecttype"))
v->s = xstrdup(type_name(oi->type));
else if (!strcmp(name, "objectsize:disk")) {
v->value = oi->disk_size;
v->s = xstrfmt("%"PRIuMAX, (uintmax_t)oi->disk_size);
} else if (!strcmp(name, "objectsize")) {
v->value = oi->size;
v->s = xstrfmt("%"PRIuMAX , (uintmax_t)oi->size);
} else if (!strcmp(name, "deltabase"))
v->s = xstrdup(oid_to_hex(&oi->delta_base_oid));
else if (deref)
grab_oid(name, "objectname", &oi->oid, v, &used_atom[i]);
}
}
/* See grab_values */
static void grab_tag_values(struct atom_value *val, int deref, struct object *obj)
{
int i;
struct tag *tag = (struct tag *) obj;
for (i = 0; i < used_atom_cnt; i++) {
const char *name = used_atom[i].name;
struct atom_value *v = &val[i];
if (!!deref != (*name == '*'))
continue;
if (deref)
name++;
if (!strcmp(name, "tag"))
v->s = xstrdup(tag->tag);
else if (!strcmp(name, "type") && tag->tagged)
v->s = xstrdup(type_name(tag->tagged->type));
else if (!strcmp(name, "object") && tag->tagged)