gnu-social/scripts/dumpschema.php

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#!/usr/bin/env php
<?php
/*
* StatusNet - a distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
$helptext = <<<END_OF_CHECKSCHEMA_HELP
Attempt to pull a schema definition for a given table.
--all run over all defined core tables
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--diff show differences between the expected and live table defs
--raw skip compatibility filtering for diffs
--update dump SQL that would be run to update or create this table
--build dump SQL that would be run to create this table fresh
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END_OF_CHECKSCHEMA_HELP;
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$longoptions = array('diff', 'all', 'build', 'update', 'raw');
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require_once INSTALLDIR.'/scripts/commandline.inc';
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function indentOptions($indent)
{
$cutoff = 3;
if ($indent < $cutoff) {
$space = $indent ? str_repeat(' ', $indent * 4) : '';
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$sep = ",";
$lf = "\n";
$endspace = "$lf" . ($indent ? str_repeat(' ', ($indent - 1) * 4) : '');
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} else {
$space = '';
$sep = ", ";
$lf = '';
$endspace = '';
}
if ($indent - 1 < $cutoff) {
}
return array($space, $sep, $lf, $endspace);
}
function prettyDumpArray($arr, $key=null, $indent=0)
{
// hack
if ($key == 'primary key') {
$subIndent = $indent + 2;
} else {
$subIndent = $indent + 1;
}
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list($space, $sep, $lf, $endspace) = indentOptions($indent);
list($inspace, $insep, $inlf, $inendspace) = indentOptions($subIndent);
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print "{$space}";
if (!is_numeric($key)) {
print "'$key' => ";
}
if (is_array($arr)) {
print "array({$inlf}";
$n = 0;
foreach ($arr as $key => $row) {
$n++;
prettyDumpArray($row, $key, $subIndent);
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if ($n < count($arr)) {
print "$insep$inlf";
}
}
// hack!
print "{$inendspace})";
} else {
print var_export($arr, true);
}
}
function getCoreSchema($tableName)
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{
$schema = array();
include INSTALLDIR . '/db/core.php';
return $schema[$tableName];
}
function getCoreTables()
{
$schema = array();
include INSTALLDIR . '/db/core.php';
return array_keys($schema);
}
function dumpTable($tableName, $live)
{
if ($live) {
$schema = Schema::get();
$def = $schema->getTableDef($tableName);
} else {
// hack
$def = getCoreSchema($tableName);
}
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prettyDumpArray($def, $tableName);
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print "\n";
}
function dumpBuildTable($tableName)
{
echo "-- \n";
echo "-- $tableName\n";
echo "-- \n";
$schema = Schema::get();
$def = getCoreSchema($tableName);
$sql = $schema->buildCreateTable($tableName, $def);
$sql[] = '';
echo implode(";\n", $sql);
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echo "\n";
}
function dumpEnsureTable($tableName)
{
$schema = Schema::get();
$def = getCoreSchema($tableName);
$sql = $schema->buildEnsureTable($tableName, $def);
if ($sql) {
echo "-- \n";
echo "-- $tableName\n";
echo "-- \n";
$sql[] = '';
echo implode(";\n", $sql);
echo "\n";
}
}
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function dumpDiff($tableName, $filter)
{
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$schema = Schema::get();
$def = getCoreSchema($tableName);
try {
$old = $schema->getTableDef($tableName);
} catch (Exception $e) {
// @fixme this is a terrible check :D
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if (preg_match('/no such table/i', $e->getMessage())) {
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return dumpTable($tableName, false);
} else {
throw $e;
}
}
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if ($filter) {
$old = $schema->filterDef($old);
$def = $schema->filterDef($def);
}
// @hack
$old = tweakPrimaryKey($old);
$def = tweakPrimaryKey($def);
$sections = array_unique(array_merge(array_keys($old), array_keys($def)));
$final = array();
foreach ($sections as $section) {
if ($section == 'fields') {
// this shouldn't be needed maybe... wait what?
}
$diff = $schema->diffArrays($old, $def, $section, $compare);
$chunks = array('del', 'mod', 'add');
foreach ($chunks as $chunk) {
if ($diff[$chunk]) {
foreach ($diff[$chunk] as $key) {
if ($chunk == 'del') {
$final[$section]["DEL $key"] = $old[$section][$key];
} else if ($chunk == 'add') {
$final[$section]["ADD $key"] = $def[$section][$key];
} else if ($chunk == 'mod') {
$final[$section]["OLD $key"] = $old[$section][$key];
$final[$section]["NEW $key"] = $def[$section][$key];
}
}
}
}
}
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prettyDumpArray($final, $tableName);
print "\n";
}
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function tweakPrimaryKey($def)
{
if (isset($def['primary key'])) {
$def['primary keys'] = array('primary key' => $def['primary key']);
unset($def['primary key']);
}
return $def;
}
if (have_option('all')) {
$args = getCoreTables();
}
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if (count($args)) {
foreach ($args as $tableName) {
if (have_option('diff')) {
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dumpDiff($tableName, !have_option('raw'));
} else if (have_option('build')) {
dumpBuildTable($tableName);
} else if (have_option('update')) {
dumpEnsureTable($tableName);
} else {
dumpTable($tableName, true);
}
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}
} else {
show_help($helptext);
}