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datatable.directory/app/Tables/CStructArrayExporter.php

118 lines
2.9 KiB

<?php
namespace App\Tables;
class CStructArrayExporter extends BaseExporter
{
/**
* @return string - mime type for the downloaded file
*/
protected function getMimeType()
{
return $this->wantDownload ? 'text/x-csrc' : 'text/plain';
}
/**
* @return string - file extension for the downloaded file
*/
protected function getFileExtension()
{
return 'c';
}
private function cify($name)
{
$name = preg_replace('/[^a-z0-9_]/i', '_', $name);
if (ctype_digit($name[0])) {
$name = '_' . $name;
}
return $name;
}
/**
* Write the document to stdout ('php://output')
*/
protected function writeDocument()
{
$fields = array_map(function (Column $c) {
$type = $c->type;
if ($type == 'string') {
$type = 'const char *';
}
$name = $this->cify($c->name);
return (object)['name' => $c->name, 'type' => $c->type, 'ctype' => $type, 'cname' => $name];
}, $this->columns);
$ctablename = $this->cify($this->table->name);
// preamble
echo "#include <stdbool.h>\n\n";
echo "struct " . $ctablename . " {\n";
foreach ($fields as $field) {
echo " " . $field->ctype . " " . $field->cname . ";\n";
}
echo "};\n\n";
// Now the table itself
echo "const struct ".$ctablename.' tbl_'.$ctablename."[] = {\n";
$first = true;
foreach ($this->iterateRows() as $row) {
if ($first) {
$first = false;
} else {
echo ",\n";
}
echo " {";
$firstf = true;
foreach ($fields as $field) {
if ($firstf) {
$firstf = false;
} else {
echo ", ";
}
$val = 0;
switch ($field->type) {
case 'string':
$val = "";
break;
case 'bool':
$val = false;
break;
}
if (isset($row->{$field->name})) {
$val = $row->{$field->name};
}
// export to C format
switch ($field->type) {
case 'string':
echo '"' . addcslashes($val, "\0..\37!@\@\177..\377") . '"';
break;
case 'bool':
echo (int)$val;
break;
case 'int':
case 'float':
echo $val;
break;
}
}
echo "}";
}
echo "\n};\n";
}
}