init 4chan

lib/ini.php

@@ -0,0 +1,124 @@
+<?php
+// The description of the INI format
+$INI_PATTERN = '/^[ \t]*([A-Z0-9_-]+)[ \t]*=[ \t]*((?:[^\r\n]|(?<=\\\\)[\r\n]{1,2})*)/m';
+
+// Global config dir absolute folder (no trailing slash)
+$configdir = '/www/global/yotsuba/config';
+$yconfgdir = '/www/global/yotsuba/config';
+
+function parse_ini( $filename )
+{
+	global $INI_PATTERN;
+	$file = @file_get_contents( $filename );
+	if( !$file ) return array();
+	preg_match_all( $INI_PATTERN, $file, $matches, PREG_SET_ORDER );
+
+	$ret = array();
+
+	foreach( $matches as $match ) {
+		// replace backslash-newlines with newlines
+		$v = preg_replace( '|\\\\[\r\n]+|', "\n", $match[ 2 ] );
+		$v = ltrim( $v );
+
+		$ret[ $match[ 1 ] ] = $v;
+	}
+
+	return $ret;
+}
+
+function write_constants( $new )
+{
+	global $constants;
+
+	foreach( $new as $k => $v ) {
+		$constants[ $k ] = $v; // update the constants array
+	}
+}
+
+function load_ini( $filename )
+{
+	global $constants, $INI_PATTERN, $loaded_files;
+	$file = file_get_contents( $filename );
+	preg_match_all( $INI_PATTERN, $file, $matches, PREG_SET_ORDER );
+
+	foreach( $matches as $match ) {
+		// replace backslash-newlines with newlines
+		$match[ 2 ] = preg_replace( '|\\\\[\r\n]+|', "\n", $match[ 2 ] );
+		$match[ 2 ] = ltrim( $match[ 2 ] );
+
+
+		$constants[ $match[ 1 ] ] = $match[ 2 ]; // update the constants array
+	}
+
+	$loaded_files[$filename] = 1;
+}
+
+function special_callback( $matches )
+{
+	global $constants;
+	$val = str_replace( "!file ", "", $matches[ 1 ], $is_file );
+	if( $is_file ) {
+		return @file_get_contents( $val );
+	}
+	$val = str_replace( "!rand ", "", $matches[ 1 ], $is_rand );
+	if( $is_rand ) {
+		$choices = explode( ",", $val );
+		$val     = array_rand( array_flip( $choices ) );
+		$val     = trim( $val );
+
+		return $val;
+	}
+
+	return evaluate( $constants[ $val ] );
+}
+
+function evaluate( $val )
+{
+	if( $val === 'yes' ) {
+		$val = true;
+		settype($val, "bool");
+	} else if( $val === 'no' ) {
+		$val = false;
+		settype($val, "bool");
+	} else {
+		$val = preg_replace_callback( '|\{\{(.*?)\}\}|', "special_callback", $val );
+	
+		// for numeric values, try to keep the PHP internal type as 'int'
+		if (ctype_digit($val)) {
+			settype($val, "int");
+		}
+	}
+	
+	return $val;
+}
+
+function finalize_constants()
+{
+	global $constants;
+	
+	$c2 = array();
+	foreach( $constants as $key => $val ) {
+		$val        = evaluate( $val );
+		$c2[ $key ] = $val;
+		if( !defined( $key ) ) {
+			define( $key, $val );
+		}
+	}
+	$constants = $c2;
+}
+
+$constants = array();
+$loaded_files = array();
+
+// quick wrapper function
+function load_ini_file( $filename )
+{
+	global $loaded_files, $configdir, $constants;
+	if( strpos( $filename, '/' ) !== 0 ) $filename = "$configdir/$filename";
+
+	if( in_array( $filename, $loaded_files ) ) return;
+
+	$constants = array();
+	load_ini($filename);
+	finalize_constants();
+}