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|
<?php
// ===== phpLiteAdmin build script =====
// === Build directives that can appear in the source code ===
//
// # EMBED <filename or glob pattern> [ | <function> [ | ...] ]
// Embeds an external file in the source code as a gzipped and base64-encoded string;
// optional filter functions can be "piped" at the end of the line;
// multiple files can be specified with glob syntax. E.g., classes/*.php
//
// # INCLUDE <php filename or glob pattern> [ | <function> [ | ...] ]
// Includes code from another php file; expects the first line of the file to
// start with '<?php';
// optional filter functions can be "piped" at the end of the line;
// multiple files can be specified with glob syntax. E.g., classes/*.php
//
// # EXPORT <$variable>
// Assigns a variable using the current value in the build script;
// will generate a valid and indented line of php code. E.g.
// $myvar = array('key'=>'value','otherkey'=>'othervalue');
//
// ###identifier###
// Is replaced with the value of $build_data['identifier']; if the array
// element is not defined, the string will be left untouched.
//
// # REMOVE_FROM_BUILD ... # END REMOVE_FROM_BUILD
// Anything between the two directive will be removed from the final code.
//
// # other build comments
// Any remaining lines starting with a # will be removed.
//
// === build script configuration ===
$inputfile = 'phpliteadmin-build-template.php';
$outputfile = 'phpliteadmin.php';
date_default_timezone_set('UTC');
// === identifiers recognized in EXPORT and ###something### directives ===
$build_data = array(
// used for resource embedding
'resources' => array(),
'resourcesize' => 0,
// custom variables
'build_date' => date('Y-m-d'),
'build_year' => date('Y'),
);
?>
<!doctype html>
<html><head>
<meta charset="utf-8" />
<title>phpLiteAdmin build script</title>
<style type="text/css">
body { font-family: monospace; color: #222; }
span { color: #22A; }
li.warn { color: #C52; }
body > ol > li { list-style-type: upper-alpha; margin-top: 0.5em; }
li li { list-style-type: decimal-leading-zero; }
</style>
</head><body><?php
// initialize script
$output = '';
error_reporting(E_ALL);
echo "<h1>Building phpLiteAdmin</h1><ol>";
// load the build template only this file will be parsed for build directives
echo "<li>Loading template: <span>{$inputfile}</span>";
$output .= file_get_contents($inputfile);
// parse EMBED
echo "<li>Embedding resources<ol>";
$output = preg_replace_callback('@(\r?\n?)^#\s*EMBED\s+(?P<pattern>\S+)\s*(?P<filters>(\|\s*\w+\s*)+|)\r?\n?$@m', 'replace_embed', $output);
echo "</ol>";
// parse INCLUDE
echo "<li>Including files<ol>";
$output = preg_replace_callback('@^#\s*INCLUDE\s+(?P<pattern>\S+)\s*(?P<filters>(\|\s*\w+\s*)+|)$@m', 'replace_include', $output);
echo "</ol>";
// parse EXPORT
echo "<li>Replacing variables<ol>";
$output = preg_replace_callback('@^(?P<indent>\s*)#\s*EXPORT\s+\$?(?P<identifier>\w+)\s*$@m', 'replace_export', $output);
// parse ###identifier###
$output = preg_replace_callback('@###(?P<identifier>\w+)###@', 'replace_value', $output);
echo "</ol>";
// parse REMOVE_FROM_BUILD
echo "<li>Removing ignored code";
$output = preg_replace('@(\r?\n?)^#\s*REMOVE_FROM_BUILD.*?^#\s*END\s+REMOVE_FROM_BUILD\s*$@ms', '', $output);
// remove other comments starting with '#'
echo "<li>Removing build comments";
$output = preg_replace('@\r?\n#[^\r\n]*@m', "", $output);
// save result script to file
echo "<li>Saving code to <span>{$outputfile}</span>";
file_put_contents($outputfile, $output);
// ===== end of main code, support functions follow =====
?></ol></body></html><?php
// filter functions for embedded files
function minify_css($css)
{
include 'support/Compressor.php';
return preg_replace('/\r?\n/', ' ', Minify_CSS_Compressor::process($css));
}
function minify_js($js)
{
include 'support/Minifier.php';
// enforce \r\n. The problem with \n is that people editing phpliteadmin.php may
// replace all \n with \r\n (by editor config) and thus the length of the JS increases
return preg_replace("/(?<!\r)\n/","\r\n", Minifier::minify($js));
}
function comment_lines($text)
{
return preg_replace('/^/m', "//\t", $text);
}
// replace functions for build script directives
function replace_include($m)
{
if ($m['filters']) {
$filters = array_map('trim', preg_split('@\s*\|\s*@', trim($m['filters'], ' |')));
} else {
$filters = array();
}
$source = '';
$matching_files = glob($m['pattern']);
if ($matching_files) {
foreach ($matching_files as $filename) {
if (is_file($filename) && is_readable($filename)) {
echo "<li><span>{$filename}</span>";
// read file and remove first '<?php' line
$data = preg_replace('/^<\?php\s*\r?\n/', '', file_get_contents($filename));
// pipe $data through filter functions
foreach ($filters as $function) {
$data = call_user_func($function, $data);
}
$source .= $data;
} else {
echo "<li class='warn'><span>{$filename}</span> - cannot read file";
}
}
} else {
echo "<li class='warn'><span>{$m['pattern']}</span> - no files matching";
}
return $source;
}
function replace_embed($m)
{
if ($m['filters']) {
$filters = array_map('trim', preg_split('@\s*\|\s*@', trim($m['filters'], ' |')));
} else {
$filters = array();
}
$result = '';
global $build_data;
$matching_files = glob($m['pattern']);
if ($matching_files) {
foreach ($matching_files as $filename) {
if (is_file($filename) && is_readable($filename)) {
echo "<li><span>{$filename}</span>";
$data = file_get_contents($filename);
// pipe $data through filter functions
foreach ($filters as $function) {
$data = call_user_func($function, $data);
}
// encode filtered data,
// $data = base64_encode(gzencode($data)); // disabled after #197
$result .= $data;
// evaluate size and position relative to __COMPILER_HALT_OFFSET__
$size = strlen($data);
$build_data['resources'][$filename] = array($build_data['resourcesize'], $size);
$build_data['resourcesize'] += $size;
} else {
echo "<li class='warn'><span>{$filename}</span> - cannot read file";
}
}
} else {
echo "<li class='warn'><span>{$m['pattern']}</span> - no files matching";
}
return $result;
}
function replace_export($m)
{
global $build_data;
$variable = $m['identifier'];
if (isset($build_data[$variable])) {
echo "<li><span>\${$variable}</span> = " . gettype($build_data[$variable]);
return $m['indent'] . '$' . $variable . ' = ' . preg_replace('/\s+/','', var_export($build_data[$variable], true)) . ';' . PHP_EOL;
}
// remove line if variabile is not defined
echo "<li class='warn'><span class=\"warn\">\${$variable}</span> - variable not defined";
return '';
}
function replace_value($m)
{
global $build_data;
$variable = $m['identifier'];
if (isset($build_data[$variable])) {
echo "<li><span>\${$variable}</span> = " . gettype($build_data[$variable]);
return $build_data[$variable];
}
// leave the string if the variable is not defined
echo "<li class='warn'><span class=\"warn\">\${$variable}</span> - variable not defined";
return $m[0];
}
// end of build script
|
