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#482: Smoke Testcase for the endless loop because of white-space hand… #483

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Merged
danfickle merged 5 commits into from
May 18, 2020
Merged

#482: Smoke Testcase for the endless loop because of white-space hand… #483

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591fcdf
#482: Smoke Testcase for the endless loop because of white-space hand…
rototor May 15, 2020
15870c3
#482: Reduced testcase by @syjer. The cullprint here is the soft hypen
rototor May 18, 2020
0b25c48
#482: Added Workaround for lines only consisting of soft-hypen.
rototor May 18, 2020
d735903
#482: We must skip lines consisting only of soft-hypen no matter how …
rototor May 18, 2020
a486953
#482: Renamed the testcase file.
rototor May 18, 2020
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8 changes: 8 additions & 0 deletions openhtmltopdf-core/src/main/java/com/openhtmltopdf/layout/Breaker.java
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Original file line number Diff line number Diff line change
Expand Up @@ -173,6 +173,14 @@ public static LineBreakResult breakText(LayoutContext c,
context.setEnd(savedEnd);
continue LOOP;
} else {
if (context.getWidth() == 0) {
String calculatedSubstring = context.getCalculatedSubstring();
if (calculatedSubstring.chars().allMatch(ch -> ch == SOFT_HYPHEN)) {
// Consists only of soft hypen, we have to break here and skip all togheter. We do not
// need to try breaking on the charater level, this will not work.
tryToBreakAnywhere = true;
}
}
// Else, retry it on a new line.
context.setEnd(savedEnd);
break LOOP;
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1 change: 1 addition & 0 deletions openhtmltopdf-core/src/main/java/com/openhtmltopdf/layout/InlineBoxing.java
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Expand Up @@ -373,6 +373,7 @@ private static void startNewInlineLine(LayoutContext c, BlockBox box, int breakA
* layout box.
* Otherwise, if there are floats and the current line is otherwise empty, moves below float and trys again.
* Otherwise, trys again on a new line.
* @return true if the line is finished, false if we must continue
*/
private static boolean startInlineText(
LayoutContext c, LineBreakContext lbContext, InlineBox inlineBox,
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2 changes: 2 additions & 0 deletions openhtmltopdf-examples/src/main/java/com/openhtmltopdf/testcases/TestcaseRunner.java
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Expand Up @@ -51,6 +51,8 @@ public class TestcaseRunner {
*/
public static void main(String[] args) throws Exception {

runTestCase("soft-hypen-oom");

/*
* Note: The RepeatedTableSample optionally requires the font file
* NotoSans-Regular.ttf to be placed in the resources directory.
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40 changes: 40 additions & 0 deletions openhtmltopdf-examples/src/main/resources/testcases/soft-hypen-oom.html
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@@ -0,0 +1,40 @@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<style>
* {
margin: 0;
padding: 0;
}

.content {
word-wrap: break-word;
white-space:pre-wrap;
}
</style>
</head>
<body>
<table class="content">
<tr>
<td>­</td>
</tr>
<tr>
<td>­­</td>
</tr>
<tr>
<td>­­­</td>
</tr>
</table>
<table class="content">
<tr>
<td> ­</td>
</tr>
<tr>
<td>­ ­</td>
</tr>
<tr>
<td>­ ­ ­</td>
</tr>
</table>
</body>
</html>