/*
** Copyright (c) 2007 D. Richard Hipp
**
** This program is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public
** License version 2 as published by the Free Software Foundation.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
**
** You should have received a copy of the GNU General Public
** License along with this library; if not, write to the
** Free Software Foundation, Inc., 59 Temple Place - Suite 330,
** Boston, MA 02111-1307, USA.
**
** Author contact information:
** drh@hwaci.com
** http://www.hwaci.com/drh/
**
*******************************************************************************
**
** This file contains code used to manage tags
*/
#include "config.h"
#include "tag.h"
#include <assert.h>
/*
** Propagate the tag given by tagid to the children of pid.
**
** This routine assumes that tagid is a tag that should be
** propagated and that the tag is already present in pid.
**
** If addFlag is true then the tag is added. If false, then the
** tag is removed.
*/
void tag_propagate(
int pid, /* Propagate the tag to children of this node */
int tagid, /* Tag to propagate */
int addFlag, /* True to add the tag. False to delete it. */
const char *zValue, /* Value of the tag. Might be NULL */
double mtime /* Timestamp on the tag */
){
PQueue queue;
Stmt s, ins, eventupdate;
pqueue_init(&queue);
pqueue_insert(&queue, pid, 0.0);
db_prepare(&s,
"SELECT cid, plink.mtime,"
" coalesce(srcid=0 AND tagxref.mtime<:mtime, %d) AS doit"
" FROM plink LEFT JOIN tagxref ON cid=rid AND tagid=%d"
" WHERE pid=:pid AND isprim",
addFlag, tagid
);
db_bind_double(&s, ":mtime", mtime);
if( addFlag ){
db_prepare(&ins,
"REPLACE INTO tagxref(tagid, addFlag, srcid, value, mtime, rid)"
"VALUES(%d,1,0,%Q,:mtime,:rid)",
tagid, zValue
);
db_bind_double(&ins, ":mtime", mtime);
}else{
zValue = 0;
db_prepare(&ins,
"DELETE FROM tagxref WHERE tagid=%d AND rid=:rid", tagid
);
}
if( tagid==TAG_BR_BGCOLOR ){
db_prepare(&eventupdate,
"UPDATE event SET brbgcolor=%Q WHERE objid=:rid", zValue
);
}
while( (pid = pqueue_extract(&queue))!=0 ){
db_bind_int(&s, ":pid", pid);
while( db_step(&s)==SQLITE_ROW ){
int doit = db_column_int(&s, 2);
if( doit ){
int cid = db_column_int(&s, 0);
double mtime = db_column_double(&s, 1);
pqueue_insert(&queue, cid, mtime);
db_bind_int(&ins, ":rid", cid);
db_step(&ins);
db_reset(&ins);
if( tagid==TAG_BR_BGCOLOR ){
db_bind_int(&eventupdate, ":rid", cid);
db_step(&eventupdate);
db_reset(&eventupdate);
}
}
}
db_reset(&s);
}
pqueue_clear(&queue);
db_finalize(&ins);
db_finalize(&s);
if( tagid==TAG_BR_BGCOLOR ){
db_finalize(&eventupdate);
}
}
/*
** Propagate all propagatable tags in pid to its children.
*/
void tag_propagate_all(int pid){
Stmt q;
db_prepare(&q,
"SELECT tagid, addflag, mtime, value FROM tagxref"
" WHERE rid=%d"
" AND (SELECT tagname FROM tag WHERE tagid=tagxref.tagid) LIKE 'br%'",
pid
);
while( db_step(&q)==SQLITE_ROW ){
int tagid = db_column_int(&q, 0);
int addflag = db_column_int(&q, 1);
double mtime = db_column_double(&q, 2);
const char *zValue = db_column_text(&q, 3);
tag_propagate(pid, tagid, addflag, zValue, mtime);
}
db_finalize(&q);
}
/*
** Get a tagid for the given TAG. Create a new tag if necessary
** if createFlag is 1.
*/
int tag_findid(const char *zTag, int createFlag){
int id;
id = db_int(0, "SELECT tagid FROM tag WHERE tagname=%Q", zTag);
if( id==0 && createFlag ){
db_multi_exec("INSERT INTO tag(tagname) VALUES(%Q)", zTag);
id = db_last_insert_rowid();
}
return id;
}
/*
** Insert a tag into the database.
*/
void tag_insert(
const char *zTag, /* Name of the tag (w/o the "+" or "-" prefix */
int addFlag, /* True to add. False to remove */
const char *zValue, /* Value if the tag is really a property */
int srcId, /* Artifact that contains this tag */
double mtime, /* Timestamp. Use default if <=0.0 */
int rid /* Artifact to which the tag is to attached */
){
Stmt s;
int tagid = tag_findid(zTag, 1);
if( mtime<=0.0 ){
mtime = db_double(0.0, "SELECT julianday('now')");
}
db_prepare(&s,
"REPLACE INTO tagxref(tagid,addFlag,srcId,value,mtime,rid)"
" VALUES(%d,%d,%d,%Q,:mtime,%d)",
tagid, addFlag, srcId, zValue, rid
);
db_bind_double(&s, ":mtime", mtime);
db_step(&s);
db_finalize(&s);
if( addFlag==0 ){
zValue = 0;
}
switch( tagid ){
case TAG_BGCOLOR: {
db_multi_exec("UPDATE event SET bgcolor=%Q WHERE objid=%d", zValue, rid);
break;
}
case TAG_BR_BGCOLOR: {
db_multi_exec("UPDATE event SET brbgcolor=%Q WHERE objid=%d", zValue,rid);
break;
}
case TAG_COMMENT: {
db_multi_exec("UPDATE event SET ecomment=%Q WHERE objid=%d", zValue, rid);
break;
}
case TAG_USER: {
db_multi_exec("UPDATE event SET euser=%Q WHERE objid=%d", zValue, rid);
break;
}
}
if( strncmp(zTag, "br", 2)==0 ){
tag_propagate(rid, tagid, addFlag, zValue, mtime);
}
}
/*
** COMMAND: test-addtag
** %fossil test-addtag TAGNAME UUID ?VALUE?
**
** Add a tag to the rebuildable tables of the local repository.
** No tag artifact is created so the new tag is erased the next
** time the repository is rebuilt. This routine is for testing
** use only.
*/
void addtag_cmd(void){
const char *zTag;
const char *zValue;
int rid;
db_must_be_within_tree();
if( g.argc!=4 && g.argc!=5 ){
usage("TAGNAME UUID ?VALUE?");
}
zTag = g.argv[2];
rid = name_to_rid(g.argv[3]);
if( rid==0 ){
fossil_fatal("no such object: %s", g.argv[3]);
}
zValue = g.argc==5 ? g.argv[4] : 0;
db_begin_transaction();
tag_insert(zTag, 1, zValue, -1, 0.0, rid);
db_end_transaction(0);
}
/*
** COMMAND: test-deltag
** %fossil test-deltag TAGNAME UUID
**
** Cancel a tag to the rebuildable tables of the local repository.
** No tag artifact is created so the cancellation is undone the next
** time the repository is rebuilt. This routine is for testing
** use only.
*/
void deltag_cmd(void){
const char *zTag;
int rid;
db_must_be_within_tree();
if( g.argc!=4 ){
usage("TAGNAME UUID");
}
zTag = g.argv[2];
rid = name_to_rid(g.argv[3]);
if( rid==0 ){
fossil_fatal("no such object: %s", g.argv[3]);
}
db_begin_transaction();
tag_insert(zTag, 0, 0, -1, 0.0, rid);
db_end_transaction(0);
}
/*
** Add a control record to the repository that either creates
** or cancels a tag.
*/
static void tag_add_artifact(
const char *zTagname, /* The tag to add or cancel */
const char *zObjName, /* Name of object attached to */
const char *zValue, /* Value for the tag. Might be NULL */
int addFlag /* True to add. false to cancel */
){
int rid;
int nrid;
char *zDate;
Blob uuid;
Blob ctrl;
Blob cksum;
user_select();
rid = name_to_rid(zObjName);
blob_zero(&uuid);
db_blob(&uuid, "SELECT uuid FROM blob WHERE rid=%d", rid);
blob_zero(&ctrl);
if( validate16(zTagname, strlen(zTagname)) ){
fossil_fatal("invalid tag name \"%s\" - might be confused with a UUID",
zTagname);
}
zDate = db_text(0, "SELECT datetime('now')");
zDate[10] = 'T';
blob_appendf(&ctrl, "D %s\n", zDate);
blob_appendf(&ctrl, "T %c%F %b", addFlag ? '+' : '-', zTagname, &uuid);
if( addFlag && zValue && zValue[0] ){
blob_appendf(&ctrl, " %F\n", zValue);
}else{
blob_appendf(&ctrl, "\n");
}
blob_appendf(&ctrl, "U %F\n", g.zLogin);
md5sum_blob(&ctrl, &cksum);
blob_appendf(&ctrl, "Z %b\n", &cksum);
db_begin_transaction();
nrid = content_put(&ctrl, 0, 0);
manifest_crosslink(nrid, &ctrl);
db_end_transaction(0);
}
/*
** COMMAND: tag
** Usage: %fossil tag SUBCOMMAND ...
**
** Run various subcommands to control tags and properties
**
** %fossil tag add TAGNAME UUID ?VALUE?
**
** Add a new tag or property to UUID.
**
** %fossil tag delete TAGNAME UUID
**
** Delete the tag TAGNAME from UUID
**
** %fossil tag find TAGNAME
**
** List all baselines that use TAGNAME
**
** %fossil tag list ?UUID?
**
** List all tags, or if UUID is supplied, list
** all tags and their values for UUID.
*/
void tag_cmd(void){
int n;
db_find_and_open_repository();
if( g.argc<3 ){
goto tag_cmd_usage;
}
n = strlen(g.argv[2]);
if( n==0 ){
goto tag_cmd_usage;
}
if( strncmp(g.argv[2],"add",n)==0 ){
char *zValue;
if( g.argc!=5 && g.argc!=6 ){
usage("tag add TAGNAME UUID ?VALUE?");
}
zValue = g.argc==6 ? g.argv[5] : 0;
tag_add_artifact(g.argv[3], g.argv[4], zValue, 1);
}else
if( strncmp(g.argv[2],"delete",n)==0 ){
if( g.argc!=5 ){
usage("tag delete TAGNAME UUID");
}
tag_add_artifact(g.argv[3], g.argv[4], 0, 0);
}else
if( strncmp(g.argv[2],"find",n)==0 ){
Stmt q;
if( g.argc!=4 ){
usage("tag find TAGNAME");
}
db_prepare(&q,
"SELECT blob.uuid FROM tagxref, blob"
" WHERE tagid=(SELECT tagid FROM tag WHERE tagname=%Q)"
" AND blob.rid=tagxref.rid", g.argv[3]
);
while( db_step(&q)==SQLITE_ROW ){
printf("%s\n", db_column_text(&q, 0));
}
db_finalize(&q);
}else
if( strncmp(g.argv[2],"list",n)==0 ){
Stmt q;
if( g.argc==3 ){
db_prepare(&q,
"SELECT tagname"
" FROM tag"
" WHERE EXISTS(SELECT 1 FROM tagxref"
" WHERE tagid=tag.tagid"
" AND addflag)"
" ORDER BY tagname"
);
while( db_step(&q)==SQLITE_ROW ){
printf("%s\n", db_column_text(&q, 0));
}
db_finalize(&q);
}else if( g.argc==4 ){
int rid = name_to_rid(g.argv[3]);
db_prepare(&q,
"SELECT tagname, value"
" FROM tagxref, tag"
" WHERE tagxref.rid=%d AND tagxref.tagid=tag.tagid"
" AND addflag"
" ORDER BY tagname",
rid
);
while( db_step(&q)==SQLITE_ROW ){
const char *zName = db_column_text(&q, 0);
const char *zValue = db_column_text(&q, 1);
if( zValue ){
printf("%s=%s\n", zName, zValue);
}else{
printf("%s\n", zName);
}
}
db_finalize(&q);
}else{
usage("tag list ?UUID?");
}
}else
{
goto tag_cmd_usage;
}
return;
tag_cmd_usage:
usage("add|delete|find|list ...");
}