i18n: Package fonts with the Thai language pack

This patch also makes a slight edit to mPDF to allow better detection of
substitions in characters, as the DejaVu fonts shipped do not support Thai
glyphs.

include/class.i18n.php

@@ -332,6 +332,29 @@ class Internationalization {
         return self::getDefaultLanguage();
     }
 
+    static function getTtfFonts() {
+        if (!class_exists('Phar'))
+            return;
+        $fonts = $subs = array();
+        foreach (self::availableLanguages() as $code=>$info) {
+            if (!$info['phar'] || !isset($info['fonts']))
+                continue;
+            foreach ($info['fonts'] as $simple => $collection) {
+                foreach ($collection as $type => $name) {
+                    list($name, $url) = $name;
+                    $ttffile = 'phar://' . $info['path'] . '/fonts/' . $name;
+                    if (file_exists($ttffile))
+                        $fonts[$simple][$type] = $ttffile;
+                }
+                if (@$collection[':sub'])
+                    $subs[] = $simple;
+            }
+        }
+        $rv = array($fonts, $subs);
+        Signal::send('config.ttfonts', null, $rv);
+        return $rv;
+    }
+
     static function bootstrap() {
 
         require_once INCLUDE_DIR . 'class.translation.php';

include/i18n/langs.php

@@ -641,7 +641,22 @@ return array(
     ),
     "th" => array(
         "name" => "Thai",
-        "nativeName" => "ไทย"
+        "nativeName" => "ไทย",
+        "fonts" => array(
+            "garuda" => array(
+                'R' => array("Garuda.ttf","http://www.osticket.com/sites/default/files/fonts/Garuda.ttf"),
+                'B' => array("Garuda-Bold.ttf","http://www.osticket.com/sites/default/files/fonts/Garuda-Bold.ttf"),
+                'I' => array("Garuda-Oblique.ttf","http://www.osticket.com/sites/default/files/fonts/Garuda-Oblique.ttf"),
+                'BI' => array("Garuda-BoldOblique.ttf","http://www.osticket.com/sites/default/files/fonts/Garuda-BoldOblique.ttf"),
+                ':sub' => true,
+            ),
+            "norasi" => array(
+                'R' => array("Norasi.ttf","http://www.osticket.com/sites/default/files/fonts/Norasi.ttf"),
+                'B' => array("Norasi-Bold.ttf","http://www.osticket.com/sites/default/files/fonts/Norasi-Bold.ttf"),
+                'I' => array("Norasi-Oblique.ttf","http://www.osticket.com/sites/default/files/fonts/Norasi-Oblique.ttf"),
+                'BI' => array("Norasi-BoldOblique.ttf","http://www.osticket.com/sites/default/files/fonts/Norasi-BoldOblique.ttf"),
+            ),
+		),
     ),
     "ti" => array(
         "name" => "Tigrinya",

include/mpdf/config.php

@@ -77,7 +77,7 @@ $this->biDirectional=false;			// automatically determine BIDI text in LTR page
 $this->autoFontGroupSize = 2;			// 1: individual words are spanned; 2: words+; 3: as big chunks as possible.
 $this->useLang = true;				// Default changed in mPDF 4.0
 
-$this->useSubstitutions = false;		// Substitute missing characters in UTF-8(multibyte) documents - from other fonts
+$this->useSubstitutions = true;		// Substitute missing characters in UTF-8(multibyte) documents - from other fonts
 $this->falseBoldWeight = 5;			// Weight for bold text when using an artificial (outline) bold; value 0 (off) - 10 (rec. max)
 
 // CONFIGURATION

include/mpdf/config_fonts.php

@@ -129,7 +129,7 @@ $this->fontdata = array(
 		'R' => "ocrb10.ttf",
 		),
 
-/* Thai fonts */
+/* Thai fonts
 	"garuda" => array(
 		'R' => "Garuda.ttf",
 		'B' => "Garuda-Bold.ttf",
@@ -301,4 +301,12 @@ $this->mono_fonts = array('dejavusansmono','freemono','liberationmono','courier'
 				'couriernew','monotypecorsiva'
 );
 
-?>
\ No newline at end of file
+// Add fonts from language packs
+
+list($phar_fonts, $phar_subs) = Internationalization::getTtfFonts();
+$this->fontdata += $phar_fonts;
+foreach ($phar_subs as $simple) {
+    if (!in_array($simple, $this->backupSubsFont))
+        $this->backupSubsFont[] = $simple;
+}
+?>

include/mpdf/mpdf.php

@@ -1220,7 +1220,9 @@ function mPDF($mode='',$format='A4',$default_font_size=0,$default_font='',$mgl=1
 		$this->useSubstitutions = true;
 		$this->SetSubstitutions();
 	}
-	else { $this->useSubstitutions = false; }
+    // osTicket custom — seems that substitions are necessary for eastern
+    // languages to work with packaged fonts
+	//else { $this->useSubstitutions = false; }
 
 /*-- HTML-CSS --*/
 
@@ -3148,7 +3150,10 @@ function AddFont($family,$style='') {
 		if (!file_exists($ttffile)) { $ttffile = ''; }
 	}
 	if (!$ttffile) {
-		$ttffile = _MPDF_TTFONTPATH.$this->fontdata[$family][$stylekey];
+		$ttffile = $this->fontdata[$family][$stylekey];
+        if ($ttffile[0] != '/' && $ttffile[1] != ':' && strpos($ttffile, 'phar://') !== 0)
+            // Not an absolute path
+            $ttffile = _MPDF_TTFONTPATH.$ttffile;
 		if (!file_exists($ttffile)) { die("mPDF Error - cannot find TTF TrueType font file - ".$ttffile); }
 	}
 	$ttfstat = stat($ttffile);

setup/cli/modules/i18n.php

@@ -41,6 +41,7 @@ class i18n_Compiler extends Module {
     static $crowdin_api_url = 'http://i18n.osticket.com/api/project/{project}/{command}';
 
     function _http_get($url) {
+        $this->stdout->write(">>> Downloading $url\n");
         #curl post
         $ch = curl_init();
         curl_setopt($ch, CURLOPT_URL, $url);
@@ -198,6 +199,25 @@ class i18n_Compiler extends Module {
             $this->stderr->write(str_replace('_','-',$lang)
                 .": Unable to fetch jQuery UI Datepicker locale file\n");
 
+        // True type fonts for PDF printing
+        $langs = (include I18N_DIR . 'langs.php');
+        $info = $langs[$lang];
+        if (isset($info['fonts'])) {
+            foreach ($info['fonts'] as $name => $types) {
+                foreach ($types as $code => $fullname) {
+                    list($ttf, $url) = $fullname;
+                    if (!$url)
+                        continue;
+                    list($code, $file) = $this->_http_get($url);
+                    if ($code == 200)
+                        $phar->addFromString('fonts/'.$ttf, $file);
+                    else
+                        $this->stderr->write(
+                            "*** Unable to fetch $url\n");
+                }
+            }
+        }
+
         // Add in the messages.mo.php file
         if ($po_file) {
             $pipes = array();