Fossil

/*
** Copyright (c) 2006 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/
**
*******************************************************************************
**
** Code for interfacing to the various databases.
**
** There are three separate database files that fossil interacts
** with:
**
**    (1)  The "user" database in ~/.fossil
**

}
void db_force_rollback(void){
  if( nBegin ){
    sqlite3_exec(g.db, "ROLLBACK", 0, 0, 0);
  }
  nBegin = 0;
}

/*
** Prepare or reprepare the sqlite3 statement from the raw SQL text.
*/
static void reprepare(Stmt *pStmt){
  sqlite3_stmt *pNew;
  if( sqlite3_prepare(g.db, blob_buffer(&pStmt->sql), -1, &pNew, 0)!=0 ){
    db_err("%s\n%s", blob_str(&pStmt->sql), sqlite3_errmsg(g.db));

}

/*
** Locate the root directory of the local repository tree.  The root
** directory is found by searching for a file named "FOSSIL" that contains
** a valid repository database.
**
** If no valid FOSSIL file is found, we move up one level and try again.
** Once the file is found, the g.zLocalRoot variable is set to the root of
** the repository tree and this routine returns 1.  If no database is
** found, then this routine return 0.
**
** This routine always opens the user database regardless of whether or
** not the repository database is found.  If the FOSSIL file is found,
** it is attached to the open database connection too.

** not server and project codes are invented for this repository.
*/
void db_initial_setup (int makeInitialVersion, int makeServerCodes){
  char *zDate;
  const char *zUser;
  Blob hash;
  Blob manifest;

  db_set("content-schema", CONTENT_SCHEMA, 0);
  db_set("aux-schema", AUX_SCHEMA, 0);
  if( makeServerCodes ){
    db_multi_exec(
      "INSERT INTO config(name,value)"
      " VALUES('server-code', lower(hex(randomblob(20))));"
      "INSERT INTO config(name,value)"

                globalFlag ? "global_" : "", zName, value);
  if( globalFlag && g.repositoryOpen ){
    db_multi_exec("DELETE FROM config WHERE name=%Q", zName);
  }
  db_end_transaction(0);
}
char *db_lget(const char *zName, char *zDefault){
  return db_text((char*)zDefault,
                 "SELECT value FROM vvar WHERE name=%Q", zName);
}
void db_lset(const char *zName, const char *zValue){
  db_multi_exec("REPLACE INTO vvar(name,value) VALUES(%Q,%Q)", zName, zValue);
}
int db_lget_int(const char *zName, int dflt){
  return db_int(dflt, "SELECT value FROM vvar WHERE name=%Q", zName);

}

/*
** Print the value of a setting named zName
*/
static void print_setting(const char *zName){
  Stmt q;
  db_prepare(&q,
     "SELECT '(local)', value FROM config WHERE name=%Q"
     " UNION ALL "
     "SELECT '(global)', value FROM global_config WHERE name=%Q",
     zName, zName
  );
  if( db_step(&q)==SQLITE_ROW ){
    printf("%-20s %-8s %s\n", zName, db_column_text(&q, 0),

**
**    omitsign         When enabled, fossil will not attempt to sign any
**                     commit with gpg. All commits will be unsigned.
**
**    safemerge        If enabled, when commit will cause a fork, the
**                     commit will not abort with warning. Also update
**                     will not be allowed if local changes exist.
**
**   diff-command      External command to run when performing a diff.
**                     If undefined, the internal text diff will be used.
**
**   gdiff-command     External command to run when performing a graphical
**                     diff. If undefined, text diff will be used.
*/
void setting_cmd(void){
  static const char *azName[] = {
    "autosync",
    "clearsign",
    "editor",
    "localauth",
    "omitsign",
    "safemerge",
    "diff-command",
    "gdiff-command",
  };
  int i;
  int globalFlag = find_option("global","g",0)!=0;
  db_find_and_open_repository();
  if( g.argc==2 ){
    for(i=0; i<sizeof(azName)/sizeof(azName[0]); i++){
      print_setting(azName[i]);

/*
** 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

void diff_cmd(void){
  const char *zFile, *zRevision;
  Blob cmd;
  Blob fname;
  Blob vname;
  Blob record;
  int cnt=0,internalDiff;

  internalDiff = find_option("internal","i",0)!=0;
  zRevision = find_option("revision", "r", 1);
  verify_all_options();

  if( g.argc<3 ){
    usage("?OPTIONS? FILE");
  }
  db_must_be_within_tree();

  if( internalDiff==0 ){
    const char *zExternalCommand;
    if( strcmp(g.argv[1], "diff")==0 ){
      zExternalCommand = db_get("diff-command", 0);
    }else{
      zExternalCommand = db_get("gdiff-command", 0);
    }
    if( zExternalCommand==0 ){
      internalDiff=1;
    }
    blob_zero(&cmd);
    blob_appendf(&cmd, "%s ", zExternalCommand);
  }
  zFile = g.argv[g.argc-1];
  if( !file_tree_name(zFile, &fname) ){
    fossil_panic("unknown file: %s", zFile);
  }

  blob_zero(&vname);
  do{
    blob_reset(&vname);
    blob_appendf(&vname, "%s~%d", zFile, cnt++);
  }while( access(blob_str(&vname),0)==0 );

  if( zRevision==0 ){
    int rid = db_int(0, "SELECT rid FROM vfile WHERE pathname=%B", &fname);
    if( rid==0 ){
      fossil_panic("no history for file: %b", &fname);
    }
    content_get(rid, &record);
  }else{