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Add google-diff-match-patch 20111117
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177 changes: 177 additions & 0 deletions server/zanata-war/src/main/resources/org/zanata/webtrans/public/diff_match_patch/COPYING
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39 changes: 39 additions & 0 deletions server/zanata-war/src/main/resources/org/zanata/webtrans/public/diff_match_patch/README.txt
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Diff, Match and Patch Library
http://code.google.com/p/google-diff-match-patch/
Neil Fraser

This library is currently available in seven different ports, all using the same API.
Every version includes a full set of unit tests.

C++:
* Ported by Mike Slemmer.
* Currently requires the Qt library.

C#:
* Ported by Matthaeus G. Chajdas.

Java:
* Included is both the source and a Maven package.

JavaScript:
* diff_match_patch_uncompressed.js is the human-readable version.
Users of node.js should 'require' this uncompressed version since the
compressed version is not guaranteed to work outside of a web browser.
* diff_match_patch.js has been compressed using Google's internal JavaScript compressor.
Non-Google hackers who wish to recompress the source can use:
http://dean.edwards.name/packer/

Lua:
* Ported by Duncan Cross.
* Does not support line-mode speedup.

Objective C:
* Ported by Jan Weiss.
* Includes speed test (this is a separate bundle for other languages).

Python:
* Two versions, one for Python 2.x, the other for Python 3.x.
* Runs 10x faster under PyPy than CPython.

Demos:
* Separate demos for Diff, Match and Patch in JavaScript.
87 changes: 87 additions & 0 deletions ...a-war/src/main/resources/org/zanata/webtrans/public/diff_match_patch/demos/demo_diff.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
<TITLE>Diff, Match and Patch: Demo of Diff</TITLE>
<SCRIPT TYPE="text/javascript" LANGUAGE="JavaScript" SRC="../javascript/diff_match_patch.js"></SCRIPT>
</HEAD>

<BODY>
<H1>Diff, Match and Patch</H1>
<H2>Demo of Diff</H2>

<P>Diff takes two texts and finds the differences. This implementation works on a character by character basis.
The result of any diff may contain 'chaff', irrelevant small commonalities which complicate the output.
A post-diff cleanup algorithm factors out these trivial commonalities.</P>

<SCRIPT TYPE="text/javascript" LANGUAGE="JavaScript">
var dmp = new diff_match_patch();

function launch() {
var text1 = document.getElementById('text1').value;
var text2 = document.getElementById('text2').value;
dmp.Diff_Timeout = parseFloat(document.getElementById('timeout').value);
dmp.Diff_EditCost = parseFloat(document.getElementById('editcost').value);

var ms_start = (new Date()).getTime();
var d = dmp.diff_main(text1, text2);
var ms_end = (new Date()).getTime();

if (document.getElementById('semantic').checked) {
dmp.diff_cleanupSemantic(d);
}
if (document.getElementById('efficiency').checked) {
dmp.diff_cleanupEfficiency(d);
}
var ds = dmp.diff_prettyHtml(d);
document.getElementById('outputdiv').innerHTML = ds + '<BR>Time: ' + (ms_end - ms_start) / 1000 + 's';
}
</SCRIPT>

<FORM action="#" onsubmit="return false">
<TABLE WIDTH="100%"><TR>
<TD WIDTH="50%">
<H3>Text Version 1:</H3>
<TEXTAREA ID="text1" STYLE="width: 100%" ROWS=10>I am the very model of a modern Major-General,
I've information vegetable, animal, and mineral,
I know the kings of England, and I quote the fights historical,
From Marathon to Waterloo, in order categorical.</TEXTAREA></TD>
<TD WIDTH="50%">
<H3>Text Version 2:</H3>
<TEXTAREA ID="text2" STYLE="width: 100%" ROWS=10>I am the very model of a cartoon individual,
My animation's comical, unusual, and whimsical,
I'm quite adept at funny gags, comedic theory I have read,
From wicked puns and stupid jokes to anvils that drop on your head.</TEXTAREA></TD>
</TR></TABLE>

<H3>Diff timeout:</H3>
<P><INPUT TYPE="text" SIZE=3 MAXLENGTH=5 VALUE="1" ID="timeout"> seconds<BR>
If the mapping phase of the diff computation takes longer than this, then the computation
is truncated and the best solution to date is returned. While guaranteed to be correct,
it may not be optimal. A timeout of '0' allows for unlimited computation.</P>

<H3>Post-diff cleanup:</H3>
<DL>
<DT><INPUT TYPE="radio" NAME="cleanup" ID="semantic" CHECKED>
<LABEL FOR="semantic">Semantic Cleanup</LABEL></DT>
<DD>Increase human readability by factoring out commonalities which are likely to be
coincidental.</DD>
<DT><INPUT TYPE="radio" NAME="cleanup" ID="efficiency">
<LABEL FOR="efficiency">Efficiency Cleanup</LABEL>,
edit cost: <INPUT TYPE="text" SIZE=3 MAXLENGTH=5 VALUE="4" ID="editcost">
<DD>Increase computational efficiency by factoring out short commonalities which are
not worth the overhead. The larger the edit cost, the more agressive the cleanup.</DD>
<DT><INPUT TYPE="radio" NAME="cleanup" ID="raw">
<LABEL FOR="raw">No Cleanup</LABEL></DT>
<DD>Raw output.</DD>
</DL>

<P><INPUT TYPE="button" onClick="launch()" VALUE="Compute Diff"></P>
</FORM>

<DIV ID="outputdiv"></DIV>

<HR>
Back to <A HREF="http://code.google.com/p/google-diff-match-patch/">Diff, Match and Patch</A>

</BODY>
</HTML>
92 changes: 92 additions & 0 deletions ...-war/src/main/resources/org/zanata/webtrans/public/diff_match_patch/demos/demo_match.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML>
<HEAD>
<TITLE>Diff, Match and Patch: Demo of Match</TITLE>
<SCRIPT TYPE="text/javascript" LANGUAGE="JavaScript" SRC="../javascript/diff_match_patch.js"></SCRIPT>
</HEAD>

<BODY>
<H1>Diff, Match and Patch</H1>
<H2>Demo of Match</H2>

<P>Match looks for a pattern within a larger text.
This implementation of match is fuzzy, meaning it can find a match even if the
pattern contains errors and doesn't exactly match what is found in the text.
This implementation also accepts an expected location, near which the match should be found.
The candidate matches are scored based on a) the number of spelling differences between the
pattern and the text and b) the distance between the candidate match and the expected location.
The match distance parameter sets the relative importance of these two metrics.</P>

<FORM action="#" onsubmit="return false">
<H3>Text:</H3>
<TEXTAREA ID="text" STYLE="width: 100%" ROWS=10 onChange="textchange()">'Twas brillig, and the slithy toves
Did gyre and gimble in the wabe.
All mimsy were the borogroves,
And the mome raths outgrabe.</TEXTAREA>

<H3>Fuzzy pattern:</H3>
<P><INPUT ID="pattern" SIZE=32 VALUE="slimy tools"> <SPAN ID="maxlengthspan"></SPAN><BR>
Aproximate pattern to search for in the text. Due to limitations of the Bitap algorithm, the pattern has a limited length.</P>

<H3>Fuzzy location:</H3>
<P><INPUT ID="loc" SIZE=4 MAXLENGTH=10 VALUE="30"> <SPAN ID="maxtextspan"></SPAN><BR>
Aproximately where in the text is the pattern expected to be found?</P>

<H3>Match distance:</H3>
<P><INPUT TYPE="text" SIZE=3 MAXLENGTH=8 VALUE="1000" ID="distance"><BR>
Determines how close the match must be to the fuzzy location (specified above). An exact letter match which is 'distance' characters away from the fuzzy location would
score as a complete mismatch. A distance of '0' requires the match be at the exact location specified, a threshold of '1000'
would require a perfect match to be within 800 characters of the fuzzy location to be found using a 0.8 threshold.</P>

<H3>Match threshold:</H3>
<P><INPUT TYPE="text" SIZE=3 MAXLENGTH=5 VALUE="0.8" ID="threshold"><BR>
At what point does the match algorithm give up. A threshold of '0.0' requires a perfect match (of both letters and location), a threshold of '1.0' would match anything.</P>

<INPUT TYPE="button" onClick="launch()" VALUE="Compute Match">
</FORM>

<DIV ID="outputdiv"></DIV>

<DIV ID="datediv"></DIV>

<SCRIPT TYPE="text/javascript" LANGUAGE="JavaScript">
var dmp = new diff_match_patch();

function launch() {
var text = document.getElementById('text').value;
var pattern = document.getElementById('pattern').value;
var loc = parseInt(document.getElementById('loc').value, 10);

dmp.Match_Distance = parseFloat(document.getElementById('distance').value);
dmp.Match_Threshold = parseFloat(document.getElementById('threshold').value);

var ms_start = (new Date()).getTime();
var match = dmp.match_main(text, pattern, loc);
var ms_end = (new Date()).getTime();

document.getElementById('datediv').innerHTML = 'Time: ' + (ms_end - ms_start) / 1000 + 's';
if (match == -1) {
document.getElementById('outputdiv').innerHTML = 'No match found.';
} else {
var quote = text.substring(match, match + pattern.length);
quote = quote.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
quote = quote.replace(/\n/g, '&para;');
document.getElementById('outputdiv').innerHTML = 'Match found at character ' + match +
': &nbsp; <CODE>' + quote + '</' + 'CODE>';
}
}

function textchange() {
document.getElementById('maxtextspan').innerHTML = '(text is currently ' + document.getElementById('text').value.length + ' characters long)';
}

textchange();
document.getElementById('pattern').maxLength = dmp.Match_MaxBits;
document.getElementById('maxlengthspan').innerHTML = '(maxlength in this browser: ' + dmp.Match_MaxBits + ')';
</SCRIPT>

<HR>
Back to <A HREF="http://code.google.com/p/google-diff-match-patch/">Diff, Match and Patch</A>

</BODY>
</HTML>

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