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<?php
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// $Id: deadwood.schemaapi.inc,v 1.7 2009/03/28 15:13:43 solotandem Exp $
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/**
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* @file
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* Generate version upgrade code from 5.x to 6.x.
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*
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* The functions in this file match up with the topics in the roadmaps at
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* http://drupal.org/node/146843 and http://drupal.org/node/114774.
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*
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* The functions herein assume the MySQL database is being used. This affects
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* the type names for table fields. If using a different database, then add
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* an a require_once statement to the database.mysql-common.inc file.
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*
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* Copyright 2008 by Jim Berry ("solotandem", http://drupal.org/user/240748)
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*/
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/**
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* Find the module name from a function block.
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*
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* TODO Move this to coversions.inc.
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*
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* @param string $function The function block.
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* @return string The module name.
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*/
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function deadwood_get_module_name($function, $hook) {
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// Get the module name
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$pattern = '/^function\s*(\w+)_' . $hook . '\s*\(/m';
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if (!preg_match($pattern, $function, $matches)) {
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return;
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}
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return isset($matches[1]) ? $matches[1] : 'module-name';
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}
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/*
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* Read install hook
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* Parse function name for the module name
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* Parse 'mysqli' case block
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* Write schema hook function
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* Read install hook
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* Replace table creation contents with
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* // Create tables.
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* drupal_install_schema('module-name');
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* Read uninstall hook
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* Replace table destruction contents with
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* // Remove tables.
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* drupal_uninstall_schema('module-name');
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* Remove any hook_update_N functions
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*/
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/**
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* Write the new hook_schema() function.
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*
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* @param string $file The file to convert.
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*/
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function deadwood_convert_hook_schema(&$file) {
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$hook = 'install';
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$cur = deadwood_find_hook($hook, $file);
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$new = $cur;
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$module_name = deadwood_get_module_name($cur, $hook);
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// Check for 'mysqli' case block.
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$pattern = '/case\s*\'mysql[i|]\'\s*:\s*(.*?)break;/s';
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if (!preg_match($pattern, $cur, $matches)) {
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return;
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}
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$queries = explode('db_query', $matches[1]);
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// Eliminate the first element (usually blank).
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array_shift($queries);
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$schema = '';
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$other = array('primary', 'unique', 'index', 'key');
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foreach ($queries as $query) {
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// If a 'mysql' case follows a 'mysqli' case, then the regex returns the
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// 'mysql' line as part of the stuff to be parsed.
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if (!preg_match('/{(.*)}/', $query, $matches)) {
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continue;
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}
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$table_name = $matches[1];
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$schema .= " \$schema['" . $table_name . "'] = array(\n";
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$schema .= " 'description' => t('TODO'),\n";
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$schema .= " 'fields' => array(\n";
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$fields = explode("\n", $query);
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// Eliminate the first element (usually the create table line).
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array_shift($fields);
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// Check for "CREATE TABLE" on a line after the "db_query" line.
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if (strpos($fields[0], 'CREATE') !== false) {
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array_shift($fields);
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}
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// Initialize the index variables.
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$primary = '';
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$uniques = array();
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$indexes = array();
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// Loop on the fields of this table.
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$done = FALSE;
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foreach ($fields as $field) {
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if ($done) {
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continue;
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}
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$field = trim($field);
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// With MySQL definitions, remove blank lines and the last line of table definition.
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if ($field == '' || strpos($field, ')') === 0) {
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$done = TRUE;
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continue;
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}
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// Clean the string before parsing.
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$field = deadwood_clean_schema_def($field);
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$tokens = explode(' ', $field);
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if (count($tokens) < 2) {
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deadwood_debug_print('Schema field is not defined', 'warning');
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continue;
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}
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// Handle the non-field items.
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if (in_array(strtolower($tokens[0]), $other)) {
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// Get index tokens which may include a multi-field key.
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$tokens = deadwood_get_index_tokens($field);
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while (count($tokens)) {
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$token = strtolower(array_shift($tokens));
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if (!count($tokens)) {
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continue;
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}
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switch ($token) {
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case 'primary' :
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// We can rely on the count because we properly parsed any multi-field keys.
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if (count($tokens) == 2) {
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if (strtolower($tokens[0]) == 'key') {
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$token = array_shift($tokens);
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}
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else {
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continue;
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}
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}
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$token = trim(array_shift($tokens), '(),');
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$keys = explode(',', $token); // Handle multi-field keys.
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$keys = deadwood_wrap_keys($keys);
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$primary = $keys;
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break;
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case 'unique' :
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if (count($tokens) == 3) {
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if (strtolower($tokens[0]) == 'key') {
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$token = array_shift($tokens);
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}
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else {
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continue;
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}
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}
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if (count($tokens) == 2) {
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$index = strtolower(array_shift($tokens));
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}
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else {
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$index = trim(strtolower($tokens[0]), '(),');
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}
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$token = trim(array_shift($tokens), '(),');
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$keys = explode(',', $token); // Handle multi-field keys.
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$keys = deadwood_wrap_keys($keys);
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$uniques[$index] = $keys;
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break;
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case 'index' :
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if (count($tokens) == 3) {
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if (strtolower($tokens[0]) == 'key') {
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$token = array_shift($tokens);
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}
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else {
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continue;
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}
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}
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case 'key' :
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if (count($tokens) == 2) {
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$index = strtolower(array_shift($tokens));
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}
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else {
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$index = trim(strtolower($tokens[0]), '(),');
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}
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$token = trim(array_shift($tokens), '(),');
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$keys = explode(',', $token); // Handle multi-field keys.
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$keys = deadwood_wrap_keys($keys);
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$indexes[$index] = $keys;
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break;
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}
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}
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}
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else {
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// Parse a field definition.
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$name = array_shift($tokens);
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list($type, $size, $precision, $scale, $length) = deadwood_get_db_type(array_shift($tokens));
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$unsigned = FALSE;
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$null = TRUE;
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$default = '';
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while (count($tokens)) {
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$token = trim(strtolower(array_shift($tokens)), ',');
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switch ($token) {
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case 'unsigned' :
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$unsigned = TRUE;
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break;
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case 'not' :
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if (trim(strtolower($tokens[0]), ',') == 'null') {
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$null = FALSE;
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$token = array_shift($tokens);
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}
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break;
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case 'default' :
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if (count($tokens[0])) {
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$default = trim($tokens[0], ',');
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deadwood_get_default($type, $default, $null);
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$token = array_shift($tokens);
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}
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break;
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case 'auto_increment' :
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$type = 'serial'; // Check that type is int?
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break;
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// Keys and indexes could be defined on a field. Do we have any?
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// case 'primary' :
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// break;
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}
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}
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// Write this field to schema.
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$schema .= " '$name' => array(\n";
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$schema .= " 'description' => t('TODO'),\n";
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$schema .= " 'type' => '$type',\n";
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if ($size != '' && $size != 'normal') {
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$schema .= " 'size' => '$size',\n";
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}
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if ($precision != 0) {
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$schema .= " 'precision' => $precision,\n";
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$schema .= " 'scale' => $scale,\n";
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}
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if ($length != 0) {
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$schema .= " 'length' => $length,\n";
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}
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if ($unsigned) {
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$schema .= " 'unsigned' => TRUE,\n";
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}
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$schema .= " 'not null' => " . ($null ? 'FALSE' : 'TRUE') . ",\n";
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if ($default != '') {
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$schema .= " 'default' => $default,\n";
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}
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$schema .= " ),\n"; // Close the array for this field.
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}
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}
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$schema .= " ),\n"; // Close the fields array.
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// Write the indexes and keys.
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if (count($indexes)) {
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$schema .= " 'indexes' => array(\n";
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foreach ($indexes as $index => $keys) {
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$schema .= " '$index' => array($keys),\n";
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}
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$schema .= " ),\n";
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}
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if (count($uniques)) {
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$schema .= " 'unique keys' => array(\n";
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foreach ($uniques as $index => $keys) {
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$schema .= " '$index' => array($keys),\n";
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}
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$schema .= " ),\n";
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}
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if ($primary != '') {
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$schema .= " 'primary key' => array($primary),\n";
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}
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$schema .= " );\n\n"; // Close the array for this table.
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}
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$schema .= " return \$schema;\n";
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$msg =
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"/**
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* Implementation of hook_schema().
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*/
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function " . $module_name . "_schema() {\n" .
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$schema .
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"}";
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$from = array();
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$to = array();
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// See if the file has an @file comment.
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$pattern = '/\/\*\*.*?\@file.*?\*\/\s/ms';
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preg_match_all($pattern, $file, $matches, PREG_PATTERN_ORDER);
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if (!isset($matches[0][0])) {
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// Find the Id line in the file.
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$from[] = '/^(\/\/ \$Id.*\$\s*$)/m';
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$to[] = "$1\n\n$msg\n";
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}
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else {
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// Find the @file comment.
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$from[] = '/^(\/\*\*.*?\@file.*?\*\/\s)/ms';
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$to[] = "$1\n$msg\n";
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}
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$cur = $file;
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$new = $cur;
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$hook = 'hook_schema';
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deadwood_do_conversions($from, $to, $new);
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deadwood_save_changes($cur, $new, $file, $hook);
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}
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function deadwood_get_index_tokens($field) {
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$keys = substr($field, strpos($field, '(')); // Could strip the '()' now
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$rest = substr($field, 0, strpos($field, '(') - 1);
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$tokens = explode(' ', $rest);
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$tokens = array_merge($tokens, array($keys));
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return $tokens;
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}
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/**
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* Clean up schema definitions that may not be exploded on spaces to yield the
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* desired parts of the definition.
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* Examples:
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* Well formed = 'DECIMAL(10,2)' or 'VARCHAR(255)' or 'TEXT(64)'
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* Poorly formed = 'DECIMAL( 10 , 2 )' or 'VARCHAR( 255 )' or 'TEXT( 64 )'
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* = '`tid` INT( 10 ) NOT NULL ,'
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*
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* On all definitions
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* Remove '`' characters around field name.
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* Remove spaces after '(' and before ')'
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* Replace multiple spaces with a single space.
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* On field definitions
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* Remove spaces before '(' and around size elements.
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| 323 |
*
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* @param string $field The field definition.
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* @return the cleaned up field definition.
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*/
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function deadwood_clean_schema_def($field) {
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$other = array('primary', 'unique', 'index', 'key');
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$tokens = explode(' ', $field);
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$from = array();
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$to = array();
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| 332 |
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$from[] = '/`/';
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$to[] = '';
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$from[] = '/\(\s*/';
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$to[] = '(';
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| 337 |
$from[] = '/\s*\)/';
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$to[] = ')';
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// Handle the field (table column) definitions.
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if (!in_array(strtolower($tokens[0]), $other)) {
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$from[] = '/\s*\(\s*/';
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$to[] = '(';
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$from[] = '/\s*,\s*/';
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$to[] = ',';
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}
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| 346 |
// Replace multiple spaces with a single space
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| 347 |
$from[] = '/\s{2,}/';
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$to[] = ' ';
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deadwood_do_conversions($from, $to, $field);
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return $field;
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| 351 |
}
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| 352 |
|
| 353 |
/**
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| 354 |
* Determine the schema API type of a database field.
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| 355 |
*
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| 356 |
* @param string $type The MySQL field type.
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| 357 |
* @return array containing field type and parameters
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| 358 |
* array($type, $size, $precision, $scale, $length).
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| 359 |
*/
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| 360 |
function deadwood_get_db_type($type) {
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| 361 |
static $db_types;
|
| 362 |
|
| 363 |
if (!isset($db_types)) {
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| 364 |
$db_types = array_flip(db_type_map());
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| 365 |
}
|
| 366 |
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| 367 |
// Extract length, precision and scale parameters.
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| 368 |
// Examples of $type = 'DECIMAL(10,2)' or 'VARCHAR(255)' or 'TEXT(64)'
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| 369 |
// Trim the type value in case it is the only parameter for the field.
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| 370 |
// Example: found a file with 'explanation TEXT,' as a field.
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| 371 |
$parts = explode('(', trim($type, ','));
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| 372 |
$type = strtoupper(array_shift($parts));
|
| 373 |
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| 374 |
$precision = 0;
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| 375 |
$scale = 0;
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| 376 |
$length = 0;
|
| 377 |
|
| 378 |
if (count($parts) > 0) {
|
| 379 |
$parts = explode(',', $parts[0]);
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| 380 |
$parts[count($parts) - 1] = trim($parts[count($parts) - 1], ')');
|
| 381 |
|
| 382 |
switch ($type) {
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| 383 |
case 'DECIMAL' :
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| 384 |
$precision = $parts[0];
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| 385 |
$scale = count($parts > 1) ? $parts[1] : 0;
|
| 386 |
break;
|
| 387 |
case 'TEXT' :
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| 388 |
$length = $parts[0];
|
| 389 |
break;
|
| 390 |
case 'VARCHAR' :
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| 391 |
$length = $parts[0];
|
| 392 |
break;
|
| 393 |
}
|
| 394 |
}
|
| 395 |
|
| 396 |
if (array_key_exists($type, $db_types)) {
|
| 397 |
list($type, $size) = explode(':', $db_types[$type]);
|
| 398 |
return array($type, $size, $precision, $scale, $length);
|
| 399 |
}
|
| 400 |
return array('unknown', '', 0, 0, 0);
|
| 401 |
}
|
| 402 |
|
| 403 |
/**
|
| 404 |
* Clean the default value of any quotation marks if not a text field.
|
| 405 |
*
|
| 406 |
* @param unknown_type $type
|
| 407 |
* @param unknown_type $default
|
| 408 |
*/
|
| 409 |
function deadwood_get_default($type, &$default, &$null) {
|
| 410 |
switch ($type) {
|
| 411 |
case 'text' :
|
| 412 |
case 'varchar' :
|
| 413 |
break;
|
| 414 |
default :
|
| 415 |
$default = trim($default, "'\"");
|
| 416 |
}
|
| 417 |
// Conform to schema module report where 'not null' => FALSE.
|
| 418 |
if ($default == 'NULL') {
|
| 419 |
$null = TRUE;
|
| 420 |
$default = '';
|
| 421 |
}
|
| 422 |
else {
|
| 423 |
$null = 0; // Using FALSE, $null = null?
|
| 424 |
}
|
| 425 |
}
|
| 426 |
|
| 427 |
/**
|
| 428 |
* Get the index key fields wrapped in quotes and separated by commas.
|
| 429 |
*
|
| 430 |
* @param array $keys Array of index names and key fields.
|
| 431 |
* @return string Index key fields wrapped in quotes and separated by commas.
|
| 432 |
*/
|
| 433 |
function deadwood_wrap_keys($keys) {
|
| 434 |
foreach ($keys as $key => $value) {
|
| 435 |
$value = trim($value);
|
| 436 |
$keys[$key] = "'$value'";
|
| 437 |
}
|
| 438 |
return implode(', ', $keys);
|
| 439 |
}
|
| 440 |
|
| 441 |
/**
|
| 442 |
* Update the hook_install() function.
|
| 443 |
* Do nothing if hook_schema function is not found. This condition is true when
|
| 444 |
* there are no tables for this module or the schema conversion has not been
|
| 445 |
* called before this routine. Note: A call to drupal_[un]install_schema on a
|
| 446 |
* non-existent schema yields two errors from common.inc as its code does not
|
| 447 |
* test the $schema variable returned from drupal_get_schema_unprocessed.
|
| 448 |
*
|
| 449 |
* @param string $file The file to convert.
|
| 450 |
*/
|
| 451 |
function deadwood_convert_hook_install(&$file) {
|
| 452 |
// Do nothing if no hook_schema function.
|
| 453 |
$hook = 'schema';
|
| 454 |
$cur = deadwood_find_hook($hook, $file);
|
| 455 |
if ($cur == '') {
|
| 456 |
return;
|
| 457 |
}
|
| 458 |
|
| 459 |
$hook = 'install';
|
| 460 |
$cur = deadwood_find_hook($hook, $file);
|
| 461 |
$new = $cur;
|
| 462 |
$module_name = deadwood_get_module_name($cur, $hook);
|
| 463 |
$hook = 'hook_install';
|
| 464 |
|
| 465 |
$msg =
|
| 466 |
" // Create tables.
|
| 467 |
drupal_install_schema('" . $module_name . "');";
|
| 468 |
|
| 469 |
$from = array();
|
| 470 |
$to = array();
|
| 471 |
// Replace the case statement.
|
| 472 |
$from[] = '/^\s*switch\s*\(\$GLOBALS\s*.*?break;\s*}\n/ms';
|
| 473 |
$to[] = "$msg\n";
|
| 474 |
|
| 475 |
deadwood_do_conversions($from, $to, $new);
|
| 476 |
deadwood_save_changes($cur, $new, $file, $hook);
|
| 477 |
}
|
| 478 |
|
| 479 |
/**
|
| 480 |
* Update the hook_uninstall() function.
|
| 481 |
* Do nothing if hook_schema function is not found. This condition is true when
|
| 482 |
* there are no tables for this module or the schema conversion has not been
|
| 483 |
* called before this routine. Note: A call to drupal_[un]install_schema on a
|
| 484 |
* non-existent schema yields two errors from common.inc as its code does not
|
| 485 |
* test the $schema variable returned from drupal_get_schema_unprocessed.
|
| 486 |
*
|
| 487 |
* @param string $file The file to convert.
|
| 488 |
*/
|
| 489 |
function deadwood_convert_hook_uninstall(&$file) {
|
| 490 |
// Do nothing if no hook_schema function.
|
| 491 |
$hook = 'schema';
|
| 492 |
$cur = deadwood_find_hook($hook, $file);
|
| 493 |
if ($cur == '') {
|
| 494 |
return;
|
| 495 |
}
|
| 496 |
|
| 497 |
$hook = 'uninstall';
|
| 498 |
$cur = deadwood_find_hook($hook, $file);
|
| 499 |
$new = $cur;
|
| 500 |
$module_name = deadwood_get_module_name($cur, $hook);
|
| 501 |
$hook = 'hook_uninstall';
|
| 502 |
|
| 503 |
$msg =
|
| 504 |
" // Remove tables.
|
| 505 |
drupal_uninstall_schema('" . $module_name . "');";
|
| 506 |
|
| 507 |
$from = array();
|
| 508 |
$to = array();
|
| 509 |
// Delete drop table statements.
|
| 510 |
$from[] = '/(^\s*db_query\((\'|\")DROP TABLE.*\n)/m'; // May have double or single quote.
|
| 511 |
$to[] = "";
|
| 512 |
// Add new schema API statement.
|
| 513 |
$from[] = '/^(function.*_uninstall.*)$/m';
|
| 514 |
$to[] = "$1\n$msg\n";
|
| 515 |
|
| 516 |
deadwood_do_conversions($from, $to, $new);
|
| 517 |
deadwood_save_changes($cur, $new, $file, $hook);
|
| 518 |
}
|
| 519 |
|
| 520 |
/**
|
| 521 |
* Delete the hook_upadate_N() functions.
|
| 522 |
*
|
| 523 |
* @param string $file The file to convert.
|
| 524 |
*/
|
| 525 |
function deadwood_convert_hook_update(&$file) {
|
| 526 |
$hook = 'update_\d+';
|
| 527 |
// Process file in chunks.
|
| 528 |
$chunks = deadwood_find_hook($hook, $file, TRUE);
|
| 529 |
$hook = 'update';
|
| 530 |
foreach ($chunks as $chunk) {
|
| 531 |
$cur = $chunk;
|
| 532 |
$new = '';
|
| 533 |
deadwood_save_changes($cur, $new, $file, 'hook_' . $hook . '_N');
|
| 534 |
}
|
| 535 |
}
|
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