(function(){function diff_match_patch(){this.Diff_Timeout=1;this.Diff_EditCost=4;this.Match_Threshold=0.5;this.Match_Distance=1E3;this.Patch_DeleteThreshold=0.5;this.Patch_Margin=4;this.Match_MaxBits=32} diff_match_patch.prototype.diff_main=function(a,b,c,d){if(typeof d=="undefined")d=this.Diff_Timeout<=0?Number.MAX_VALUE:(new Date).getTime()+this.Diff_Timeout*1E3;if(a==null||b==null)throw Error("Null input. (diff_main)");if(a==b){if(a)return[[0,a]];return[]}if(typeof c=="undefined")c=true;var e=c,f=this.diff_commonPrefix(a,b);c=a.substring(0,f);a=a.substring(f);b=b.substring(f);f=this.diff_commonSuffix(a,b);var g=a.substring(a.length-f);a=a.substring(0,a.length-f);b=b.substring(0,b.length-f);a=this.diff_compute_(a, b,e,d);c&&a.unshift([0,c]);g&&a.push([0,g]);this.diff_cleanupMerge(a);return a}; diff_match_patch.prototype.diff_compute_=function(a,b,c,d){if(!a)return[[1,b]];if(!b)return[[-1,a]];var e=a.length>b.length?a:b,f=a.length>b.length?b:a,g=e.indexOf(f);if(g!=-1){c=[[1,e.substring(0,g)],[0,f],[1,e.substring(g+f.length)]];if(a.length>b.length)c[0][0]=c[2][0]=-1;return c}if(f.length==1)return[[-1,a],[1,b]];if(e=this.diff_halfMatch_(a,b)){f=e[0];a=e[1];g=e[2];b=e[3];e=e[4];f=this.diff_main(f,g,c,d);c=this.diff_main(a,b,c,d);return f.concat([[0,e]],c)}if(c&&a.length>100&&b.length>100)return this.diff_lineMode_(a, b,d);return this.diff_bisect_(a,b,d)}; diff_match_patch.prototype.diff_lineMode_=function(a,b,c){var d=this.diff_linesToChars_(a,b);a=d[0];b=d[1];d=d[2];a=this.diff_bisect_(a,b,c);this.diff_charsToLines_(a,d);this.diff_cleanupSemantic(a);a.push([0,""]);for(var e=b=0,f=0,g=d="";b=1&&f>=1){d=this.diff_main(d,g,false,c);a.splice(b-e-f,e+f);b=b-e-f;for(e=d.length-1;e>=0;e--)a.splice(b,0,d[e]);b+=d.length}e=f=0;g=d=""}b++}a.pop();return a}; diff_match_patch.prototype.diff_bisect_=function(a,b,c){for(var d=a.length,e=b.length,f=Math.ceil((d+e)/2),g=f,h=2*f,j=Array(h),i=Array(h),k=0;kc)break;for(var n=-r+s;n<=r-p;n+=2){var m=g+n,o;o=n==-r||n!=r&&j[m-1]d)p+=2;else if(u>e)s+=2;else if(l){m=g+k-n;if(m>=0&&m=v)return this.diff_bisectSplit_(a,b,o,u,c)}}}for(n=-r+q;n<=r-t;n+=2){m=g+n;v=n==-r||n!=r&&i[m-1]d)t+=2;else if(o>e)q+=2;else if(!l){m=g+k-n;if(m>=0&&m=v)return this.diff_bisectSplit_(a,b,o,u,c)}}}}return[[-1,a],[1,b]]}; diff_match_patch.prototype.diff_bisectSplit_=function(a,b,c,d,e){var f=a.substring(0,c),g=b.substring(0,d);a=a.substring(c);b=b.substring(d);f=this.diff_main(f,g,false,e);e=this.diff_main(a,b,false,e);return f.concat(e)}; diff_match_patch.prototype.diff_linesToChars_=function(a,b){function c(h){for(var j="",i=0,k=-1,l=d.length;kd)a=a.substring(c-d);else if(c=i.length?[t,r,n,m,q]:null}if(this.Diff_Timeout<=0)return null; var d=a.length>b.length?a:b,e=a.length>b.length?b:a;if(d.length<4||e.length*2d[4].length?g:d:d:g;var j;if(a.length>b.length){g=h[0];d=h[1];e=h[2];j=h[3]}else{e=h[0];j=h[1];g=h[2];d=h[3]}h=h[4];return[g,d,e,j,h]}; diff_match_patch.prototype.diff_cleanupSemantic=function(a){for(var b=false,c=[],d=0,e=null,f=0,g=0,h=0,j=0,i=0;f0?c[d-1]:-1;i=j=h=g=0;e=null;b=true}}f++}b&&this.diff_cleanupMerge(a);this.diff_cleanupSemanticLossless(a);for(f=1;f=q){q=t;l=j;s=i;p=k}}if(a[h-1][1]!=l){if(l)a[h-1][1]=l;else{a.splice(h-1,1);h--}a[h][1]=s;if(p)a[h+1][1]=p;else{a.splice(h+1,1);h--}}}h++}}; diff_match_patch.prototype.diff_cleanupEfficiency=function(a){for(var b=false,c=[],d=0,e="",f=0,g=false,h=false,j=false,i=false;f0?c[d-1]:-1;j=i=false}b=true}}f++}b&&this.diff_cleanupMerge(a)}; diff_match_patch.prototype.diff_cleanupMerge=function(a){a.push([0,""]);for(var b=0,c=0,d=0,e="",f="",g;b1){if(c!==0&&d!==0){g=this.diff_commonPrefix(f,e);if(g!==0){if(b-c-d>0&&a[b-c-d-1][0]==0)a[b-c-d-1][1]+=f.substring(0,g);else{a.splice(0,0,[0,f.substring(0,g)]);b++}f=f.substring(g);e=e.substring(g)}g=this.diff_commonSuffix(f,e);if(g!==0){a[b][1]=f.substring(f.length-g)+a[b][1];f=f.substring(0, f.length-g);e=e.substring(0,e.length-g)}}if(c===0)a.splice(b-c-d,c+d,[1,f]);else d===0?a.splice(b-c-d,c+d,[-1,e]):a.splice(b-c-d,c+d,[-1,e],[1,f]);b=b-c-d+(c?1:0)+(d?1:0)+1}else if(b!==0&&a[b-1][0]==0){a[b-1][1]+=a[b][1];a.splice(b,1)}else b++;c=d=0;f=e=""}a[a.length-1][1]===""&&a.pop();c=false;for(b=1;bb)break;e=c;f=d}if(a.length!=g&&a[g][0]===-1)return f;return f+(b-e)}; diff_match_patch.prototype.diff_prettyHtml=function(a){for(var b=[],c=0,d=/&/g,e=//g,g=/\n/g,h=0;h");switch(j){case 1:b[h]=''+k+"";break;case -1:b[h]=''+k+"";break;case 0:b[h]=""+k+""}if(j!==-1)c+=i.length}return b.join("")}; diff_match_patch.prototype.diff_text1=function(a){for(var b=[],c=0;cthis.Match_MaxBits)throw Error("Pattern too long for this browser.");var e=this.match_alphabet_(b),f=this,g=this.Match_Threshold,h=a.indexOf(b,c);if(h!=-1){g=Math.min(d(0,h),g);h=a.lastIndexOf(b,c+b.length);if(h!=-1)g=Math.min(d(0,h),g)}var j=1<=i;q--){var t=e[a.charAt(q-1)];k[q]=p===0?(k[q+1]<<1|1)&t:(k[q+1]<<1|1)&t|(s[q+1]|s[q])<<1|1|s[q+1];if(k[q]&j){t=d(p,q-1);if(t<=g){g=t;h=q-1;if(h>c)i=Math.max(1,2*c-h);else break}}}if(d(p+1,c)>g)break;s=k}return h}; diff_match_patch.prototype.match_alphabet_=function(a){for(var b={},c=0;c2){this.diff_cleanupSemantic(b);this.diff_cleanupEfficiency(b)}}else if(a&&typeof a=="object"&&typeof b=="undefined"&&typeof c=="undefined"){b=a;d=this.diff_text1(b)}else if(typeof a=="string"&&b&&typeof b=="object"&&typeof c=="undefined")d=a;else if(typeof a=="string"&&typeof b=="string"&&c&&typeof c=="object"){d=a;b=c}else throw Error("Unknown call format to patch_make."); if(b.length===0)return[];c=[];a=new patch_obj;for(var e=0,f=0,g=0,h=d,j=0;j=2*this.Patch_Margin)if(e){this.patch_addContext_(a, h);c.push(a);a=new patch_obj;e=0;h=d;f=g}}if(i!==1)f+=k.length;if(i!==-1)g+=k.length}if(e){this.patch_addContext_(a,h);c.push(a)}return c};diff_match_patch.prototype.patch_deepCopy=function(a){for(var b=[],c=0;cthis.Match_MaxBits){j=this.match_main(b,h.substring(0,this.Match_MaxBits),g);if(j!=-1){i=this.match_main(b,h.substring(h.length-this.Match_MaxBits),g+h.length-this.Match_MaxBits);if(i==-1||j>=i)j=-1}}else j=this.match_main(b,h, g);if(j==-1){e[f]=false;d-=a[f].length2-a[f].length1}else{e[f]=true;d=j-g;g=i==-1?b.substring(j,j+h.length):b.substring(j,i+this.Match_MaxBits);if(h==g)b=b.substring(0,j)+this.diff_text2(a[f].diffs)+b.substring(j+h.length);else{g=this.diff_main(h,g,false);if(h.length>this.Match_MaxBits&&this.diff_levenshtein(g)/h.length>this.Patch_DeleteThreshold)e[f]=false;else{this.diff_cleanupSemanticLossless(g);h=0;var k;for(i=0;ie[0][1].length){var f=b-e[0][1].length;e[0][1]=c.substring(e[0][1].length)+e[0][1];d.start1-=f;d.start2-=f;d.length1+=f;d.length2+=f}d=a[a.length-1];e=d.diffs;if(e.length==0||e[e.length-1][0]!= 0){e.push([0,c]);d.length1+=b;d.length2+=b}else if(b>e[e.length-1][1].length){f=b-e[e.length-1][1].length;e[e.length-1][1]+=c.substring(0,f);d.length1+=f;d.length2+=f}return c}; diff_match_patch.prototype.patch_splitMax=function(a){for(var b=this.Match_MaxBits,c=0;cb){var d=a[c];a.splice(c--,1);for(var e=d.start1,f=d.start2,g="";d.diffs.length!==0;){var h=new patch_obj,j=true;h.start1=e-g.length;h.start2=f-g.length;if(g!==""){h.length1=h.length2=g.length;h.diffs.push([0,g])}for(;d.diffs.length!==0&&h.length12*b){h.length1+=i.length;e+=i.length;j=false;h.diffs.push([g,i]);d.diffs.shift()}else{i=i.substring(0,b-h.length1-this.Patch_Margin);h.length1+=i.length;e+=i.length;if(g===0){h.length2+=i.length;f+=i.length}else j=false;h.diffs.push([g,i]);if(i==d.diffs[0][1])d.diffs.shift();else d.diffs[0][1]=d.diffs[0][1].substring(i.length)}}g=this.diff_text2(h.diffs);g=g.substring(g.length-this.Patch_Margin);i=this.diff_text1(d.diffs).substring(0,this.Patch_Margin); if(i!==""){h.length1+=i.length;h.length2+=i.length;if(h.diffs.length!==0&&h.diffs[h.diffs.length-1][0]===0)h.diffs[h.diffs.length-1][1]+=i;else h.diffs.push([0,i])}j||a.splice(++c,0,h)}}};diff_match_patch.prototype.patch_toText=function(a){for(var b=[],c=0;c