[PDF] Fix name generation - / needs to be escaped.

BUG=chromium 148422

Review URL: https://codereview.appspot.com/6542044

git-svn-id: http://skia.googlecode.com/svn/trunk@5641 2bbb7eff-a529-9590-31e7-b0007b416f81

src/pdf/SkPDFTypes.cpp

@@ -301,10 +301,12 @@ size_t SkPDFName::getOutputSize(SkPDFCatalog* catalog, bool indirect) {
 // static
 SkString SkPDFName::FormatName(const SkString& input) {
     SkASSERT(input.size() <= kMaxLen);
+    // TODO(vandebo) If more escaping is needed, improve the linear scan.
+    static const char escaped[] = "#/%()<>[]{}";
 
     SkString result("/");
     for (size_t i = 0; i < input.size(); i++) {
-        if (input[i] & 0x80 || input[i] < '!' || input[i] == '#') {
+        if (input[i] & 0x80 || input[i] < '!' || strchr(escaped, input[i])) {
             result.append("#");
             // Mask with 0xFF to avoid sign extension. i.e. #FFFFFF81
             result.appendHex(input[i] & 0xFF, 2);

tests/PDFPrimitivesTest.cpp

@@ -273,6 +273,12 @@ static void TestPDFPrimitives(skiatest::Reporter* reporter) {
     CheckObjectOutput(reporter, name.get(), expectedResult,
                       strlen(expectedResult), false, false);
 
+    SkRefPtr<SkPDFName> escapedName = new SkPDFName("A#/%()<>[]{}B");
+    escapedName->unref();  // SkRefPtr and new both took a reference.
+    const char escapedNameExpected[] = "/A#23#2F#25#28#29#3C#3E#5B#5D#7B#7DB";
+    CheckObjectOutput(reporter, escapedName.get(), escapedNameExpected,
+                      strlen(escapedNameExpected), false, false);
+
     // Test that we correctly handle characters with the high-bit set.
     const unsigned char highBitCString[] = {0xDE, 0xAD, 'b', 'e', 0xEF, 0};
     SkRefPtr<SkPDFName> highBitName = new SkPDFName((const char*)highBitCString);