Utente:Genuzzu/difflib-browser.js

/**
 * @fileoverview Text diff library ported from Python's difflib module. 
 *     https://github.com/qiao/difflib.js
 */
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this.b=a,this.matchingBlocks=this.opcodes=null,this.fullbcount=null,this._chainB()},a.prototype._chainB=function(){var a,b,c,d,e,f,g,h,i,k,l,m,n,o,p,q;a=this.b,this.b2j=b={};for(d=m=0,o=a.length;m<o;d=++m)c=a[d],f=w(b,c)?b[c]:b[c]=[],f.push(d);h={},g=this.isjunk;if(g){q=Object.keys(b);for(n=0,p=q.length;n<p;n++)c=q[n],g(c)&&(h[c]=!0,delete b[c])}l={},i=a.length;if(this.autojunk&&i>=200){k=j(i/100)+1;for(c in b)e=b[c],e.length>k&&(l[c]=!0,delete b[c])}return this.isbjunk=function(a){return w(h,a)},this.isbpopular=function(a){return w(l,a)}},a.prototype.findLongestMatch=function(a,b,c,d){var e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,x,y,z;t=[this.a,this.b,this.b2j,this.isbjunk],e=t[0],f=t[1],g=t[2],l=t[3],u=[a,c,0],h=u[0],i=u[1],j=u[2],n={};for(k=q=a;a<=b?q<b:q>b;k=a<=b?++q:--q){p={},v=w(g,e[k])?g[e[k]]:[];for(r=0,s=v.length;r<s;r++){m=v[r];if(m<c)continue;if(m>=d)break;o=p[m]=(n[m-1]||0)+1,o>j&&(x=[k-o+1,m-o+1,o],h=x[0],i=x[1],j=x[2])}n=p}while(h>a&&i>c&&!l(f[i-1])&&e[h-1]===f[i-1])y=[h-1,i-1,j+1],h=y[0],i=y[1],j=y[2];while(h+j<b&&i+j<d&&!l(f[i+j])&&e[h+j]===f[i+j])j++;while(h>a&&i>c&&l(f[i-1])&&e[h-1]===f[i-1])z=[h-1,i-1,j+1],h=z[0],i=z[1],j=z[2];while(h+j<b&&i+j<d&&l(f[i+j])&&e[h+j]===f[i+j])j++;return[h,i,j]},a.prototype.getMatchingBlocks=function(){var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,s,t,u,v,w,x,y,z,A;if(this.matchingBlocks)return this.matchingBlocks;w=[this.a.length,this.b.length],n=w[0],o=w[1],s=[[0,n,0,o]],p=[];while(s.length)x=s.pop(),b=x[0],a=x[1],d=x[2],c=x[3],y=t=this.findLongestMatch(b,a,d,c),e=y[0],h=y[1],k=y[2],k&&(p.push(t),b<e&&d<h&&s.push([b,e,d,h]),e+k<a&&h+k<c&&s.push([e+k,a,h+k,c]));p.sort(r),f=i=l=0,q=[];for(u=0,v=p.length;u<v;u++)z=p[u],g=z[0],j=z[1],m=z[2],f+l===g&&i+l===j?l+=m:(l&&q.push([f,i,l]),A=[g,j,m],f=A[0],i=A[1],l=A[2]);return l&&q.push([f,i,l]),q.push([n,o,0]),this.matchingBlocks=q},a.prototype.getOpcodes=function(){var a,b,c,d,e,f,g,h,i,j,k,l;if(this.opcodes)return this.opcodes;d=e=0,this.opcodes=b=[],j=this.getMatchingBlocks();for(h=0,i=j.length;h<i;h++)k=j[h],a=k[0],c=k[1],f=k[2],g="",d<a&&e<c?g="replace":d<a?g="delete":e<c&&(g="insert"),g&&b.push([g,d,a,e,c]),l=[a+f,c+f],d=l[0],e=l[1],f&&b.push(["equal",a,d,c,e]);return b},a.prototype.getGroupedOpcodes=function(a){var b,c,d,e,f,g,h,i,j,k,n,o,p,q,r;a==null&&(a=3),b=this.getOpcodes(),b.length||(b=[["equal",0,1,0,1]]),b[0][0]==="equal"&&(o=b[0],j=o[0],e=o[1],f=o[2],g=o[3],h=o[4],b[0]=[j,l(e,f-a),f,l(g,h-a),h]),b[b.length-1][0]==="equal"&&(p=b[b.length-1],j=p[0],e=p[1],f=p[2],g=p[3],h=p[4],b[b.length-1]=[j,e,m(f,e+a),g,m(h,g+a)]),i=a+a,d=[],c=[];for(k=0,n=b.length;k<n;k++)q=b[k],j=q[0],e=q[1],f=q[2],g=q[3],h=q[4],j==="equal"&&f-e>i&&(c.push([j,e,m(f,e+a),g,m(h,g+a)]),d.push(c),c=[],r=[l(e,f-a),l(g,h-a)],e=r[0],g=r[1]),c.push([j,e,f,g,h]);return c.length&&(c.length!==1||c[0][0]!=="equal")&&d.push(c),d},a.prototype.ratio=function(){var a,b,c,d,e;b=0,e=this.getMatchingBlocks();for(c=0,d=e.length;c<d;c++)a=e[c],b+=a[2];return s(b,this.a.length+this.b.length)},a.prototype.quickRatio=function(){var a,b,c,d,e,f,g,h,i,j,k;if(!this.fullbcount){this.fullbcount=c={},j=this.b;for(f=0,h=j.length;f<h;f++)b=j[f],c[b]=(c[b]||0)+1}c=this.fullbcount,a={},d=0,k=this.a;for(g=0,i=k.length;g<i;g++)b=k[g],w(a,b)?e=a[b]:e=c[b]||0,a[b]=e-1,e>0&&d++;return s(d,this.a.length+this.b.length)},a.prototype.realQuickRatio=function(){var a,b,c;return c=[this.a.length,this.b.length],a=c[0],b=c[1],s(m(a,b),a+b)},a}(),k=function(a,b,c,e){var f,h,i,j,k,l,m,n,o,p;c==null&&(c=3),e==null&&(e=.6);if(c>0){if(0<=e&&e<=1){f=[],h=new g,h.setSeq2(a);for(k=0,m=b.length;k<m;k++)j=b[k],h.setSeq1(j),h.realQuickRatio()>=e&&h.quickRatio()>=e&&h.ratio()>=e&&f.push([h.ratio(),j]);f=d.nlargest(f,c,r),p=[];for(l=0,n=f.length;l<n;l++)o=f[l],i=o[0],j=o[1],p.push(j);return p}throw new Error("cutoff must be in [0.0, 1.0]: ("+e+")")}throw new Error("n must be > 0: ("+c+")")},t=function(a,b){var c,d,e;e=[0,a.length],c=e[0],d=e[1];while(c<d&&a[c]===b)c++;return c},b=function(){function a(a,b){this.linejunk=a,this.charjunk=b}return a.name="Differ",a.prototype.compare=function(a,b){var c,d,e,f,h,i,j,k,l,m,n,o,p,q,r;h=new g(this.linejunk,a,b),k=[],q=h.getOpcodes();for(m=0,o=q.length;m<o;m++){r=q[m],l=r[0],d=r[1],c=r[2],f=r[3],e=r[4];switch(l){case"replace":i=this._fancyReplace(a,d,c,b,f,e);break;case"delete":i=this._dump("-",a,d,c);break;case"insert":i=this._dump("+",b,f,e);break;case"equal":i=this._dump(" ",a,d,c);break;default:throw new Error("unknow tag ("+l+")")}for(n=0,p=i.length;n<p;n++)j=i[n],k.push(j)}return k},a.prototype._dump=function(a,b,c,d){var e,f,g;g=[];for(e=f=c;c<=d?f<d:f>d;e=c<=d?++f:--f)g.push(""+a+" "+b[e]);return g},a.prototype._plainReplace=function(a,b,c,d,e,f){var g,i,j,k,l,m,n,o,p,q;h(b<c&&e<f),f-e<c-b?(g=this._dump("+",d,e,f),l=this._dump("-",a,b,c)):(g=this._dump("-",a,b,c),l=this._dump("+",d,e,f)),k=[],q=[g,l];for(m=0,o=q.length;m<o;m++){i=q[m];for(n=0,p=i.length;n<p;n++)j=i[n],k.push(j)}return k},a.prototype._fancyReplace=function(a,b,c,d,e,f){var h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,$,_,ab,bb;R=[.74,.75],n=R[0],v=R[1],u=new g(this.charjunk),S=[null,null],w=S[0],x=S[1],D=[];for(z=F=e;e<=f?F<f:F>f;z=e<=f?++F:--F){q=d[z],u.setSeq2(q);for(y=G=b;b<=c?G<c:G>c;y=b<=c?++G:--G){i=a[y];if(i===q){w===null&&(W=[y,z],w=W[0],x=W[1]);continue}u.setSeq1(i),u.realQuickRatio()>n&&u.quickRatio()>n&&u.ratio()>n&&(X=[u.ratio(),y,z],n=X[0],o=X[1],p=X[2])}}if(n<v){if(w===null){Y=this._plainReplace(a,b,c,d,e,f);for(H=0,J=Y.length;H<J;H++)C=Y[H],D.push(C);return D}Z=[w,x,1],o=Z[0],p=Z[1],n=Z[2]}else w=null;$=this._fancyHelper(a,b,o,d,e,p);for(I=0,K=$.length;I<K;I++)C=$[I],D.push(C);_=[a[o],d[p]],h=_[0],m=_[1];if(w===null){l=t="",u.setSeqs(h,m),ab=u.getOpcodes();for(O=0,L=ab.length;O<L;O++){bb=ab[O],E=bb[0],j=bb[1],k=bb[2],r=bb[3],s=bb[4],T=[k-j,s-r],A=T[0],B=T[1];switch(E){case"replace":l+=Array(A+1).join("^"),t+=Array(B+1).join("^");break;case"delete":l+=Array(A+1).join("-");break;case"insert":t+=Array(B+1).join("+");break;case"equal":l+=Array(A+1).join(" "),t+=Array(B+1).join(" ");break;default:throw new Error("unknow tag ("+E+")")}}U=this._qformat(h,m,l,t);for(P=0,M=U.length;P<M;P++)C=U[P],D.push(C)}else D.push("  "+h);V=this._fancyHelper(a,o+1,c,d,p+1,f);for(Q=0,N=V.length;Q<N;Q++)C=V[Q],D.push(C);return D},a.prototype._fancyHelper=function(a,b,c,d,e,f){var g;return g=[],b<c?e<f?g=this._fancyReplace(a,b,c,d,e,f):g=this._dump("-",a,b,c):e<f&&(g=this._dump("+",d,e,f)),g},a.prototype._qformat=function(a,b,c,d){var e,f;return f=[],e=m(t(a,"	"),t(b,"	")),e=m(e,t(c.slice(0,e)," 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