From 41c6a5a06acfa9386c980d24c538fc22cc7c1bb3 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Wed, 5 Sep 2018 15:16:30 +0200
Subject: Add 'fix-s22pdf.js' script to examples.

---
 docs/examples/fix-s22pdf.js | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 docs/examples/fix-s22pdf.js

diff --git a/docs/examples/fix-s22pdf.js b/docs/examples/fix-s22pdf.js
new file mode 100644
index 00000000..276cbb1b
--- /dev/null
+++ b/docs/examples/fix-s22pdf.js
@@ -0,0 +1,33 @@
+// A simple script to fix the broken fonts in PDF files generated by S22PDF.
+
+if (scriptArgs.length != 2) {
+	print("usage: mutool run fix-s22pdf.js input.pdf output.pdf");
+	quit();
+}
+
+var doc = new PDFDocument(scriptArgs[0]);
+
+var font = new Font("zh-Hans");
+var song = doc.addCJKFont(font, "zh-Hans", "H", "serif");
+var heiti = doc.addCJKFont(font, "zh-Hans", "H", "sans-serif");
+song.Encoding = 'GBK-EUC-H';
+heiti.Encoding = 'GBK-EUC-H';
+
+var MAP = {
+	"/#CB#CE#CC#E5": song, // SimSun
+	"/#BA#DA#CC#E5": heiti, // SimHei
+	"/#BF#AC#CC#E5_GB2312": song, // SimKai
+	"/#B7#C2#CB#CE_GB2312": heiti, // SimFang
+	"/#C1#A5#CA#E9": song, // SimLi
+}
+
+var i, n = doc.countPages();
+for (i = 0; i < n; ++i) {
+	var fonts = doc.findPage(i).Resources.Font;
+	fonts.forEach(function (name, font) {
+		if (font.BaseFont in MAP && font.Encoding == 'WinAnsiEncoding')
+			fonts[name] = MAP[font.BaseFont];
+	});
+}
+
+doc.save(scriptArgs[1]);
-- 
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