/**
* Returns the edits array, but now filled with edits to reverse the given array
* @todo: Add more
*/
function reverse_edits($actions)
{
$reverse_edits = array();
foreach ($actions['EDITS'] as $file => $edit_ary) {
foreach ($edit_ary as $edit_id => $edit) {
foreach ($edit as $find => $action_ary) {
foreach ($action_ary as $type => $command) {
// it is possible for a single edit in the install process
// to become more than one in the uninstall process
while (isset($reverse_edits['EDITS'][$file][$edit_id])) {
$edit_id++;
}
switch (strtoupper($type)) {
// for before and after adds, we use the find as a tool for more precise finds
// this isn't perfect, but it seems better than having
// finds of only a couple characters, like "/*"
case 'AFTER ADD':
$total_find = rtrim($find, "\n") . "\n" . trim($command, "\n");
$reverse_edits['EDITS'][$file][$edit_id][$total_find]['replace with'] = $find;
break;
case 'BEFORE ADD':
$total_find = rtrim($command, "\n") . "\n" . trim($find, "\n");
// replace with the find
$reverse_edits['EDITS'][$file][$edit_id][$total_find]['replace with'] = $find;
break;
case 'REPLACE WITH':
case 'REPLACE, WITH':
case 'REPLACE-WITH':
case 'REPLACE':
// replace $command (new code) with $find (original code)
$reverse_edits['EDITS'][$file][$edit_id][$command]['replace with'] = $find;
break;
case 'IN-LINE-EDIT':
$action_id = 0;
// build the reverse just like the normal action
foreach ($command as $inline_find => $inline_action_ary) {
foreach ($inline_action_ary as $inline_action => $inline_command) {
$inline_command = $inline_command[0];
switch (strtoupper($inline_action)) {
case 'IN-LINE-AFTER-ADD':
case 'IN-LINE-BEFORE-ADD':
// Replace with a blank string
$reverse_edits['EDITS'][$file][$edit_id][$find]['in-line-edit'][$action_id][$inline_command]['in-line-replace'][] = '';
break;
case 'IN-LINE-REPLACE':
// replace with the inline find
$reverse_edits['EDITS'][$file][$edit_id][$find]['in-line-edit'][$action_id][$inline_command][$inline_action][] = $inline_find;
break;
default:
// For the moment, we do nothing. What about increment?
break;
}
$action_id++;
}
}
break;
default:
// again, increment
break;
}
}
}
}
}
if (empty($actions['SQL'])) {
return $reverse_edits;
}
if (sizeof($actions['SQL']) == 1) {
$actions['SQL'] = explode("\n", $actions['SQL'][0]);
}
foreach ($actions['SQL'] as $query) {
$reverse_edits['SQL'][] = parser::reverse_query($query);
}
return $reverse_edits;
}
