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• diff_match_patch.js

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META-INF.resources.oam.custom.inputHtml.diff_match_patch.js Maven / Gradle / Ivy

function diff_match_patch(){this.Diff_Timeout=1.0;this.Diff_EditCost=4;this.Diff_DualThreshold=32;this.Match_Balance=0.5;this.Match_Threshold=0.5;this.Match_MinLength=100;this.Match_MaxLength=1000;this.Patch_Margin=4;function getMaxBits(){var maxbits=0;var oldi=1;var newi=2;while(oldi!=newi){maxbits++;oldi=newi;newi=newi<<1}return maxbits}this.Match_MaxBits=getMaxBits()}var DIFF_DELETE=-1;var DIFF_INSERT=1;var DIFF_EQUAL=0;diff_match_patch.prototype.diff_main=function(text1,text2,opt_checklines){if(text1==text2){return[[DIFF_EQUAL,text1]]}if(typeof opt_checklines=='undefined'){opt_checklines=true}var checklines=opt_checklines;var commonlength=this.diff_commonPrefix(text1,text2);var commonprefix=text1.substring(0,commonlength);text1=text1.substring(commonlength);text2=text2.substring(commonlength);commonlength=this.diff_commonSuffix(text1,text2);var commonsuffix=text1.substring(text1.length-commonlength);text1=text1.substring(0,text1.length-commonlength);text2=text2.substring(0,text2.length-commonlength);var diffs=this.diff_compute(text1,text2,checklines);if(commonprefix){diffs.unshift([DIFF_EQUAL,commonprefix])}if(commonsuffix){diffs.push([DIFF_EQUAL,commonsuffix])}this.diff_cleanupMerge(diffs);return diffs};diff_match_patch.prototype.diff_compute=function(text1,text2,checklines){var diffs;if(!text1){return[[DIFF_INSERT,text2]]}if(!text2){return[[DIFF_DELETE,text1]]}var longtext=text1.length>text2.length?text1:text2;var shorttext=text1.length>text2.length?text2:text1;var i=longtext.indexOf(shorttext);if(i!=-1){diffs=[[DIFF_INSERT,longtext.substring(0,i)],[DIFF_EQUAL,shorttext],[DIFF_INSERT,longtext.substring(i+shorttext.length)]];if(text1.length>text2.length){diffs[0][0]=diffs[2][0]=DIFF_DELETE}return diffs}longtext=shorttext=null;var hm=this.diff_halfMatch(text1,text2);if(hm){var text1_a=hm[0];var text1_b=hm[1];var text2_a=hm[2];var text2_b=hm[3];var mid_common=hm[4];var diffs_a=this.diff_main(text1_a,text2_a,checklines);var diffs_b=this.diff_main(text1_b,text2_b,checklines);return diffs_a.concat([[DIFF_EQUAL,mid_common]],diffs_b)}if(checklines&&(text1.length<100||text2.length<100)){checklines=false}var linearray;if(checklines){var a=this.diff_linesToChars(text1,text2);text1=a[0];text2=a[1];linearray=a[2]}diffs=this.diff_map(text1,text2);if(!diffs){diffs=[[DIFF_DELETE,text1],[DIFF_INSERT,text2]]}if(checklines){this.diff_charsToLines(diffs,linearray);this.diff_cleanupSemantic(diffs);diffs.push([DIFF_EQUAL,'']);var pointer=0;var count_delete=0;var count_insert=0;var text_delete='';var text_insert='';while(pointer=1&&count_insert>=1){var a=this.diff_main(text_delete,text_insert,false);diffs.splice(pointer-count_delete-count_insert,count_delete+count_insert);pointer=pointer-count_delete-count_insert;for(var j=a.length-1;j>=0;j--){diffs.splice(pointer,0,a[j])}pointer=pointer+a.length}count_insert=0;count_delete=0;text_delete='';text_insert='';break}pointer++}diffs.pop()}return diffs};diff_match_patch.prototype.diff_linesToChars=function(text1,text2){var lineArray=[];var lineHash={};lineArray[0]='';function diff_linesToCharsMunge(text){var chars='';var lineStart=0;var lineEnd=-1;var lineArrayLength=lineArray.length;while(lineEnd0&&(new Date()).getTime()>ms_end){return null}v_map1[d]={};for(var k=-d;k<=d;k+=2){if(k==-d||k!=d&&v1[k-1]=0;d--){while(1){if(v_map[d].hasOwnProperty?v_map[d].hasOwnProperty((x-1)+','+y):(v_map[d][(x-1)+','+y]!==undefined)){x--;if(last_op===DIFF_DELETE){path[0][1]=text1.charAt(x)+path[0][1]}else{path.unshift([DIFF_DELETE,text1.charAt(x)])}last_op=DIFF_DELETE;break}else if(v_map[d].hasOwnProperty?v_map[d].hasOwnProperty(x+','+(y-1)):(v_map[d][x+','+(y-1)]!==undefined)){y--;if(last_op===DIFF_INSERT){path[0][1]=text2.charAt(y)+path[0][1]}else{path.unshift([DIFF_INSERT,text2.charAt(y)])}last_op=DIFF_INSERT;break}else{x--;y--;if(last_op===DIFF_EQUAL){path[0][1]=text1.charAt(x)+path[0][1]}else{path.unshift([DIFF_EQUAL,text1.charAt(x)])}last_op=DIFF_EQUAL}}}return path};diff_match_patch.prototype.diff_path2=function(v_map,text1,text2){var path=[];var pathLength=0;var x=text1.length;var y=text2.length;var last_op=null;for(var d=v_map.length-2;d>=0;d--){while(1){if(v_map[d].hasOwnProperty?v_map[d].hasOwnProperty((x-1)+','+y):(v_map[d][(x-1)+','+y]!==undefined)){x--;if(last_op===DIFF_DELETE){path[pathLength-1][1]+=text1.charAt(text1.length-x-1)}else{path[pathLength++]=[DIFF_DELETE,text1.charAt(text1.length-x-1)]}last_op=DIFF_DELETE;break}else if(v_map[d].hasOwnProperty?v_map[d].hasOwnProperty(x+','+(y-1)):(v_map[d][x+','+(y-1)]!==undefined)){y--;if(last_op===DIFF_INSERT){path[pathLength-1][1]+=text2.charAt(text2.length-y-1)}else{path[pathLength++]=[DIFF_INSERT,text2.charAt(text2.length-y-1)]}last_op=DIFF_INSERT;break}else{x--;y--;if(last_op===DIFF_EQUAL){path[pathLength-1][1]+=text1.charAt(text1.length-x-1)}else{path[pathLength++]=[DIFF_EQUAL,text1.charAt(text1.length-x-1)]}last_op=DIFF_EQUAL}}}return path};diff_match_patch.prototype.diff_commonPrefix=function(text1,text2){if(!text1||!text2||text1.charCodeAt(0)!==text2.charCodeAt(0)){return 0}var pointermin=0;var pointermax=Math.min(text1.length,text2.length);var pointermid=pointermax;var pointerstart=0;while(pointermintext2.length?text1:text2;var shorttext=text1.length>text2.length?text2:text1;if(longtext.length<10||shorttext.length<1){return null}var dmp=this;function diff_halfMatchI(longtext,shorttext,i){var seed=longtext.substring(i,i+Math.floor(longtext.length/4));var j=-1;var best_common='';var best_longtext_a,best_longtext_b,best_shorttext_a,best_shorttext_b;while((j=shorttext.indexOf(seed,j+1))!=-1){var prefixLength=dmp.diff_commonPrefix(longtext.substring(i),shorttext.substring(j));var suffixLength=dmp.diff_commonSuffix(longtext.substring(0,i),shorttext.substring(0,j));if(best_common.length=longtext.length/2){return[best_longtext_a,best_longtext_b,best_shorttext_a,best_shorttext_b,best_common]}else{return null}}var hm1=diff_halfMatchI(longtext,shorttext,Math.ceil(longtext.length/4));var hm2=diff_halfMatchI(longtext,shorttext,Math.ceil(longtext.length/2));var hm;if(!hm1&&!hm2){return null}else if(!hm2){hm=hm1}else if(!hm1){hm=hm2}else{hm=hm1[4].length>hm2[4].length?hm1:hm2}var text1_a,text1_b,text2_a,text2_b;if(text1.length>text2.length){text1_a=hm[0];text1_b=hm[1];text2_a=hm[2];text2_b=hm[3]}else{text2_a=hm[0];text2_b=hm[1];text1_a=hm[2];text1_b=hm[3]}var mid_common=hm[4];return[text1_a,text1_b,text2_a,text2_b,mid_common]};diff_match_patch.prototype.diff_cleanupSemantic=function(diffs){var changes=false;var equalities=[];var equalitiesLength=0;var lastequality=null;var pointer=0;var length_changes1=0;var length_changes2=0;while(pointer=bestScore){bestScore=score;bestEquality1=equality1;bestEdit=edit;bestEquality2=equality2}}if(diffs[pointer-1][1]!=bestEquality1){diffs[pointer-1][1]=bestEquality1;diffs[pointer][1]=bestEdit;diffs[pointer+1][1]=bestEquality2}}pointer++}};diff_match_patch.prototype.diff_cleanupEfficiency=function(diffs){var changes=false;var equalities=[];var equalitiesLength=0;var lastequality='';var pointer=0;var pre_ins=false;var pre_del=false;var post_ins=false;var post_del=false;while(pointer0&&diffs[pointer-count_delete-count_insert-1][0]==DIFF_EQUAL){diffs[pointer-count_delete-count_insert-1][1]+=text_insert.substring(0,commonlength)}else{diffs.splice(0,0,[DIFF_EQUAL,text_insert.substring(0,commonlength)]);pointer++}text_insert=text_insert.substring(commonlength);text_delete=text_delete.substring(commonlength)}commonlength=this.diff_commonSuffix(text_insert,text_delete);if(commonlength!==0){diffs[pointer][1]=text_insert.substring(text_insert.length-commonlength)+diffs[pointer][1];text_insert=text_insert.substring(0,text_insert.length-commonlength);text_delete=text_delete.substring(0,text_delete.length-commonlength)}}if(count_delete===0){diffs.splice(pointer-count_delete-count_insert,count_delete+count_insert,[DIFF_INSERT,text_insert])}else if(count_insert===0){diffs.splice(pointer-count_delete-count_insert,count_delete+count_insert,[DIFF_DELETE,text_delete])}else{diffs.splice(pointer-count_delete-count_insert,count_delete+count_insert,[DIFF_DELETE,text_delete],[DIFF_INSERT,text_insert])}pointer=pointer-count_delete-count_insert+(count_delete?1:0)+(count_insert?1:0)+1}else if(pointer!==0&&diffs[pointer-1][0]==DIFF_EQUAL){diffs[pointer-1][1]+=diffs[pointer][1];diffs.splice(pointer,1)}else{pointer++}count_insert=0;count_delete=0;text_delete='';text_insert='';break}}if(diffs[diffs.length-1][1]===''){diffs.pop()}var changes=false;pointer=1;while(pointerloc){break}last_chars1=chars1;last_chars2=chars2}if(diffs.length!=x&&diffs[x][0]===DIFF_DELETE){return last_chars2}return last_chars2+(loc-last_chars1)};diff_match_patch.prototype.diff_prettyHtml=function(diffs){this.diff_addIndex(diffs);var html=[];for(var x=0;x/g,'>');t=t.replace(/\n/g,'¶
');switch(m){case DIFF_INSERT:html[x]=''+t+'';break;case DIFF_DELETE:html[x]=''+t+'';break;case DIFF_EQUAL:html[x]=''+t+'';break}}return html.join('')};diff_match_patch.prototype.diff_text1=function(diffs){var txt=[];for(var x=0;xthis.Match_MaxBits){throw new Error('Pattern too long for this browser.')}var s=this.match_alphabet(pattern);var score_text_length=text.length;score_text_length=Math.max(score_text_length,this.Match_MinLength);score_text_length=Math.min(score_text_length,this.Match_MaxLength);var dmp=this;function match_bitapScore(e,x){var d=Math.abs(loc-x);return(e/pattern.length/dmp.Match_Balance)+(d/score_text_length/(1.0-dmp.Match_Balance))}var score_threshold=this.Match_Threshold;var best_loc=text.indexOf(pattern,loc);if(best_loc!=-1){score_threshold=Math.min(match_bitapScore(0,best_loc),score_threshold)}best_loc=text.lastIndexOf(pattern,loc+pattern.length);if(best_loc!=-1){score_threshold=Math.min(match_bitapScore(0,best_loc),score_threshold)}var matchmask=1<<(pattern.length-1);best_loc=null;var bin_min,bin_mid;var bin_max=Math.max(loc+loc,text.length);var last_rd;for(var d=0;d=start;j--){if(d===0){rd[j]=((rd[j+1]<<1)|1)&s[text.charAt(j)]}else{rd[j]=((rd[j+1]<<1)|1)&s[text.charAt(j)]|((last_rd[j+1]<<1)|1)|((last_rd[j]<<1)|1)|last_rd[j+1]}if(rd[j]&matchmask){var score=match_bitapScore(d,j);if(score<=score_threshold){score_threshold=score;best_loc=j;if(j>loc){start=Math.max(0,loc-(j-loc))}else{break}}}}if(match_bitapScore(d+1,loc)>score_threshold){break}last_rd=rd}return best_loc};diff_match_patch.prototype.match_alphabet=function(pattern){var s=Object();for(var i=0;i2){this.diff_cleanupSemantic(diffs);this.diff_cleanupEfficiency(diffs)}}}if(diffs.length===0){return[]}var patches=[];var patch=new patch_obj();var patchDiffLength=0;var char_count1=0;var char_count2=0;var prepatch_text=text1;var postpatch_text=text1;for(var x=0;x=2*this.Patch_Margin){if(patchDiffLength){this.patch_addContext(patch,prepatch_text);patches.push(patch);patch=new patch_obj();patchDiffLength=0;prepatch_text=postpatch_text}}break}if(diff_type!==DIFF_INSERT){char_count1+=diff_text.length}if(diff_type!==DIFF_DELETE){char_count2+=diff_text.length}}if(patchDiffLength){this.patch_addContext(patch,prepatch_text);patches.push(patch)}return patches};diff_match_patch.prototype.patch_apply=function(patches,text){this.patch_splitMax(patches);var results=[];var delta=0;for(var x=0;xthis.Match_MaxBits){var bigpatch=patches[x];patches.splice(x,1);var patch_size=this.Match_MaxBits;var start1=bigpatch.start1;var start2=bigpatch.start2;var precontext='';while(bigpatch.diffs.length!==0){var patch=new patch_obj();var empty=true;patch.start1=start1-precontext.length;patch.start2=start2-precontext.length;if(precontext!==''){patch.length1=patch.length2=precontext.length;patch.diffs.push([DIFF_EQUAL,precontext])}while(bigpatch.diffs.length!==0&&patch.length1