app/assets/javascripts/diff_match_patch.js
(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) {
"undefined" == typeof d && (d = 0 >= this.Diff_Timeout ? Number.MAX_VALUE : (new Date).getTime() + 1E3 * this.Diff_Timeout);
if (null == a || null == b) throw Error("Null input. (diff_main)");
if (a == b) return a ? [
[0, a]
] : [];
"undefined" == typeof c && (c = !0);
var e = c,
f = this.diff_commonPrefix(a, b);
c = a.substring(0, f);
a = a.substring(f);
b = b.substring(f);
var f = this.diff_commonSuffix(a, b),
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);
return -1 != g ? (c = [
[1, e.substring(0, g)],
[0, f],
[1, e.substring(g + f.length)]
], a.length > b.length && (c[0][0] = c[2][0] = -1), c) : 1 == f.length ? [
[-1, a],
[1, b]
] : (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), f.concat([
[0, e]
], c)) : c && 100 < a.length && 100 < b.length ? this.diff_lineMode_(a, b,
d) : 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.chars1;
b = d.chars2;
d = d.lineArray;
a = this.diff_main(a, b, !1, c);
this.diff_charsToLines_(a, d);
this.diff_cleanupSemantic(a);
a.push([0, ""]);
for (var e = d = b = 0, f = "", g = ""; b < a.length;) {
switch (a[b][0]) {
case 1:
e++;
g += a[b][1];
break;
case -1:
d++;
f += a[b][1];
break;
case 0:
if (1 <= d && 1 <= e) {
a.splice(b - d - e, d + e);
b = b - d - e;
d = this.diff_main(f, g, !1, c);
for (e = d.length - 1; 0 <= e; e--) a.splice(b, 0, d[e]);
b += d.length
}
d = e = 0;
g = f = ""
}
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; k < h; k++) j[k] = -1, i[k] = -1;
j[g + 1] = 0;
i[g + 1] = 0;
for (var k = d - e, q = 0 != k % 2, r = 0, t = 0, p = 0, w = 0, v = 0; v < f && !((new Date).getTime() > c); v++) {
for (var n = -v + r; n <= v - t; n += 2) {
var l = g + n,
m;
m = n == -v || n != v && j[l - 1] < j[l + 1] ? j[l + 1] : j[l - 1] + 1;
for (var s = m - n; m < d && s < e && a.charAt(m) == b.charAt(s);) m++, s++;
j[l] = m;
if (m > d) t += 2;
else if (s > e) r += 2;
else if (q && (l = g + k - n, 0 <= l && l < h && -1 != i[l])) {
var u = d - i[l];
if (m >=
u) return this.diff_bisectSplit_(a, b, m, s, c)
}
}
for (n = -v + p; n <= v - w; n += 2) {
l = g + n;
u = n == -v || n != v && i[l - 1] < i[l + 1] ? i[l + 1] : i[l - 1] + 1;
for (m = u - n; u < d && m < e && a.charAt(d - u - 1) == b.charAt(e - m - 1);) u++, m++;
i[l] = u;
if (u > d) w += 2;
else if (m > e) p += 2;
else if (!q && (l = g + k - n, 0 <= l && (l < h && -1 != j[l]) && (m = j[l], s = g + m - l, u = d - u, m >= u))) return this.diff_bisectSplit_(a, b, m, s, 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, !1, e);
e = this.diff_main(a, b, !1, e);
return f.concat(e)
};
diff_match_patch.prototype.diff_linesToChars_ = function(a, b) {
function c(a) {
for (var b = "", c = 0, f = -1, g = d.length; f < a.length - 1;) {
f = a.indexOf("\n", c); - 1 == f && (f = a.length - 1);
var r = a.substring(c, f + 1),
c = f + 1;
(e.hasOwnProperty ? e.hasOwnProperty(r) : void 0 !== e[r]) ? b += String.fromCharCode(e[r]): (b += String.fromCharCode(g), e[r] = g, d[g++] = r)
}
return b
}
var d = [],
e = {};
d[0] = "";
var f = c(a),
g = c(b);
return {
chars1: f,
chars2: g,
lineArray: d
}
};
diff_match_patch.prototype.diff_charsToLines_ = function(a, b) {
for (var c = 0; c < a.length; c++) {
for (var d = a[c][1], e = [], f = 0; f < d.length; f++) e[f] = b[d.charCodeAt(f)];
a[c][1] = e.join("")
}
};
diff_match_patch.prototype.diff_commonPrefix = function(a, b) {
if (!a || !b || a.charAt(0) != b.charAt(0)) return 0;
for (var c = 0, d = Math.min(a.length, b.length), e = d, f = 0; c < e;) a.substring(f, e) == b.substring(f, e) ? f = c = e : d = e, e = Math.floor((d - c) / 2 + c);
return e
};
diff_match_patch.prototype.diff_commonSuffix = function(a, b) {
if (!a || !b || a.charAt(a.length - 1) != b.charAt(b.length - 1)) return 0;
for (var c = 0, d = Math.min(a.length, b.length), e = d, f = 0; c < e;) a.substring(a.length - e, a.length - f) == b.substring(b.length - e, b.length - f) ? f = c = e : d = e, e = Math.floor((d - c) / 2 + c);
return e
};
diff_match_patch.prototype.diff_commonOverlap_ = function(a, b) {
var c = a.length,
d = b.length;
if (0 == c || 0 == d) return 0;
c > d ? a = a.substring(c - d) : c < d && (b = b.substring(0, c));
c = Math.min(c, d);
if (a == b) return c;
for (var d = 0, e = 1;;) {
var f = a.substring(c - e),
f = b.indexOf(f);
if (-1 == f) return d;
e += f;
if (0 == f || a.substring(c - e) == b.substring(0, e)) d = e, e++
}
};
diff_match_patch.prototype.diff_halfMatch_ = function(a, b) {
function c(a, b, c) {
for (var d = a.substring(c, c + Math.floor(a.length / 4)), e = -1, g = "", h, j, n, l; - 1 != (e = b.indexOf(d, e + 1));) {
var m = f.diff_commonPrefix(a.substring(c), b.substring(e)),
s = f.diff_commonSuffix(a.substring(0, c), b.substring(0, e));
g.length < s + m && (g = b.substring(e - s, e) + b.substring(e, e + m), h = a.substring(0, c - s), j = a.substring(c + m), n = b.substring(0, e - s), l = b.substring(e + m))
}
return 2 * g.length >= a.length ? [h, j, n, l, g] : null
}
if (0 >= this.Diff_Timeout) return null;
var d = a.length > b.length ? a : b,
e = a.length > b.length ? b : a;
if (4 > d.length || 2 * e.length < d.length) return null;
var f = this,
g = c(d, e, Math.ceil(d.length / 4)),
d = c(d, e, Math.ceil(d.length / 2)),
h;
if (!g && !d) return null;
h = d ? g ? g[4].length > d[4].length ? g : d : d : g;
var j;
a.length > b.length ? (g = h[0], d = h[1], e = h[2], j = h[3]) : (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 = !1, c = [], d = 0, e = null, f = 0, g = 0, h = 0, j = 0, i = 0; f < a.length;) 0 == a[f][0] ? (c[d++] = f, g = j, h = i, i = j = 0, e = a[f][1]) : (1 == a[f][0] ? j += a[f][1].length : i += a[f][1].length, e && (e.length <= Math.max(g, h) && e.length <= Math.max(j, i)) && (a.splice(c[d - 1], 0, [-1, e]), a[c[d - 1] + 1][0] = 1, d--, d--, f = 0 < d ? c[d - 1] : -1, i = j = h = g = 0, e = null, b = !0)), f++;
b && this.diff_cleanupMerge(a);
this.diff_cleanupSemanticLossless(a);
for (f = 1; f < a.length;) {
if (-1 == a[f - 1][0] && 1 == a[f][0]) {
b = a[f - 1][1];
c = a[f][1];
d = this.diff_commonOverlap_(b, c);
e = this.diff_commonOverlap_(c, b);
if (d >= e) {
if (d >= b.length / 2 || d >= c.length / 2) a.splice(f, 0, [0, c.substring(0, d)]), a[f - 1][1] = b.substring(0, b.length - d), a[f + 1][1] = c.substring(d), f++
} else if (e >= b.length / 2 || e >= c.length / 2) a.splice(f, 0, [0, b.substring(0, e)]), a[f - 1][0] = 1, a[f - 1][1] = c.substring(0, c.length - e), a[f + 1][0] = -1, a[f + 1][1] = b.substring(e), f++;
f++
}
f++
}
};
diff_match_patch.prototype.diff_cleanupSemanticLossless = function(a) {
function b(a, b) {
if (!a || !b) return 6;
var c = a.charAt(a.length - 1),
d = b.charAt(0),
e = c.match(diff_match_patch.nonAlphaNumericRegex_),
f = d.match(diff_match_patch.nonAlphaNumericRegex_),
g = e && c.match(diff_match_patch.whitespaceRegex_),
h = f && d.match(diff_match_patch.whitespaceRegex_),
c = g && c.match(diff_match_patch.linebreakRegex_),
d = h && d.match(diff_match_patch.linebreakRegex_),
i = c && a.match(diff_match_patch.blanklineEndRegex_),
j = d && b.match(diff_match_patch.blanklineStartRegex_);
return i || j ? 5 : c || d ? 4 : e && !g && h ? 3 : g || h ? 2 : e || f ? 1 : 0
}
for (var c = 1; c < a.length - 1;) {
if (0 == a[c - 1][0] && 0 == a[c + 1][0]) {
var d = a[c - 1][1],
e = a[c][1],
f = a[c + 1][1],
g = this.diff_commonSuffix(d, e);
if (g) var h = e.substring(e.length - g),
d = d.substring(0, d.length - g),
e = h + e.substring(0, e.length - g),
f = h + f;
for (var g = d, h = e, j = f, i = b(d, e) + b(e, f); e.charAt(0) === f.charAt(0);) {
var d = d + e.charAt(0),
e = e.substring(1) + f.charAt(0),
f = f.substring(1),
k = b(d, e) + b(e, f);
k >= i && (i = k, g = d, h = e, j = f)
}
a[c - 1][1] != g && (g ? a[c - 1][1] = g : (a.splice(c - 1, 1), c--), a[c][1] =
h, j ? a[c + 1][1] = j : (a.splice(c + 1, 1), c--))
}
c++
}
};
diff_match_patch.nonAlphaNumericRegex_ = /[^a-zA-Z0-9]/;
diff_match_patch.whitespaceRegex_ = /\s/;
diff_match_patch.linebreakRegex_ = /[\r\n]/;
diff_match_patch.blanklineEndRegex_ = /\n\r?\n$/;
diff_match_patch.blanklineStartRegex_ = /^\r?\n\r?\n/;
diff_match_patch.prototype.diff_cleanupEfficiency = function(a) {
for (var b = !1, c = [], d = 0, e = null, f = 0, g = !1, h = !1, j = !1, i = !1; f < a.length;) {
if (0 == a[f][0]) a[f][1].length < this.Diff_EditCost && (j || i) ? (c[d++] = f, g = j, h = i, e = a[f][1]) : (d = 0, e = null), j = i = !1;
else if (-1 == a[f][0] ? i = !0 : j = !0, e && (g && h && j && i || e.length < this.Diff_EditCost / 2 && 3 == g + h + j + i)) a.splice(c[d - 1], 0, [-1, e]), a[c[d - 1] + 1][0] = 1, d--, e = null, g && h ? (j = i = !0, d = 0) : (d--, f = 0 < d ? c[d - 1] : -1, j = i = !1), b = !0;
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; b < a.length;) switch (a[b][0]) {
case 1:
d++;
f += a[b][1];
b++;
break;
case -1:
c++;
e += a[b][1];
b++;
break;
case 0:
1 < c + d ? (0 !== c && 0 !== d && (g = this.diff_commonPrefix(f, e), 0 !== g && (0 < b - c - d && 0 == a[b - c - d - 1][0] ? a[b - c - d - 1][1] += f.substring(0, g) : (a.splice(0, 0, [0, f.substring(0, g)]), b++), f = f.substring(g), e = e.substring(g)), g = this.diff_commonSuffix(f, e), 0 !== g && (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))), 0 === c ? a.splice(b - d, c + d, [1, f]) : 0 === d ? a.splice(b - c, 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) : 0 !== b && 0 == a[b - 1][0] ? (a[b - 1][1] += a[b][1], a.splice(b, 1)) : b++, c = d = 0, f = e = ""
}
"" === a[a.length - 1][1] && a.pop();
c = !1;
for (b = 1; b < a.length - 1;) 0 == a[b - 1][0] && 0 == a[b + 1][0] && (a[b][1].substring(a[b][1].length - a[b - 1][1].length) == a[b - 1][1] ? (a[b][1] = a[b - 1][1] + a[b][1].substring(0, a[b][1].length - a[b - 1][1].length), a[b + 1][1] = a[b - 1][1] + a[b + 1][1], a.splice(b - 1, 1), c = !0) : a[b][1].substring(0,
a[b + 1][1].length) == a[b + 1][1] && (a[b - 1][1] += a[b + 1][1], a[b][1] = a[b][1].substring(a[b + 1][1].length) + a[b + 1][1], a.splice(b + 1, 1), c = !0)), b++;
c && this.diff_cleanupMerge(a)
};
diff_match_patch.prototype.diff_xIndex = function(a, b) {
var c = 0,
d = 0,
e = 0,
f = 0,
g;
for (g = 0; g < a.length; g++) {
1 !== a[g][0] && (c += a[g][1].length); - 1 !== a[g][0] && (d += a[g][1].length);
if (c > b) break;
e = c;
f = d
}
return a.length != g && -1 === a[g][0] ? f : f + (b - e)
};
diff_match_patch.prototype.diff_prettyHtml = function(a) {
for (var b = [], c = /&/g, d = /</g, e = />/g, f = /\n/g, g = 0; g < a.length; g++) {
var h = a[g][0],
j = a[g][1],
j = j.replace(c, "&").replace(d, "<").replace(e, ">").replace(f, "¶<br>");
switch (h) {
case 1:
b[g] = '<ins style="background:#e6ffe6;">' + j + "</ins>";
break;
case -1:
b[g] = '<del style="background:#ffe6e6;">' + j + "</del>";
break;
case 0:
b[g] = "<span>" + j + "</span>"
}
}
return b.join("")
};
diff_match_patch.prototype.diff_text1 = function(a) {
for (var b = [], c = 0; c < a.length; c++) 1 !== a[c][0] && (b[c] = a[c][1]);
return b.join("")
};
diff_match_patch.prototype.diff_text2 = function(a) {
for (var b = [], c = 0; c < a.length; c++) - 1 !== a[c][0] && (b[c] = a[c][1]);
return b.join("")
};
diff_match_patch.prototype.diff_levenshtein = function(a) {
for (var b = 0, c = 0, d = 0, e = 0; e < a.length; e++) {
var f = a[e][0],
g = a[e][1];
switch (f) {
case 1:
c += g.length;
break;
case -1:
d += g.length;
break;
case 0:
b += Math.max(c, d), d = c = 0
}
}
return b += Math.max(c, d)
};
diff_match_patch.prototype.diff_toDelta = function(a) {
for (var b = [], c = 0; c < a.length; c++) switch (a[c][0]) {
case 1:
b[c] = "+" + encodeURI(a[c][1]);
break;
case -1:
b[c] = "-" + a[c][1].length;
break;
case 0:
b[c] = "=" + a[c][1].length
}
return b.join("\t").replace(/%20/g, " ")
};
diff_match_patch.prototype.diff_fromDelta = function(a, b) {
for (var c = [], d = 0, e = 0, f = b.split(/\t/g), g = 0; g < f.length; g++) {
var h = f[g].substring(1);
switch (f[g].charAt(0)) {
case "+":
try {
c[d++] = [1, decodeURI(h)]
} catch (j) {
throw Error("Illegal escape in diff_fromDelta: " + h);
}
break;
case "-":
case "=":
var i = parseInt(h, 10);
if (isNaN(i) || 0 > i) throw Error("Invalid number in diff_fromDelta: " + h);
h = a.substring(e, e += i);
"=" == f[g].charAt(0) ? c[d++] = [0, h] : c[d++] = [-1, h];
break;
default:
if (f[g]) throw Error("Invalid diff operation in diff_fromDelta: " +
f[g]);
}
}
if (e != a.length) throw Error("Delta length (" + e + ") does not equal source text length (" + a.length + ").");
return c
};
diff_match_patch.prototype.match_main = function(a, b, c) {
if (null == a || null == b || null == c) throw Error("Null input. (match_main)");
c = Math.max(0, Math.min(c, a.length));
return a == b ? 0 : a.length ? a.substring(c, c + b.length) == b ? c : this.match_bitap_(a, b, c) : -1
};
diff_match_patch.prototype.match_bitap_ = function(a, b, c) {
function d(a, d) {
var e = a / b.length,
g = Math.abs(c - d);
return !f.Match_Distance ? g ? 1 : e : e + g / f.Match_Distance
}
if (b.length > this.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); - 1 != h && (g = Math.min(d(0, h), g), h = a.lastIndexOf(b, c + b.length), -1 != h && (g = Math.min(d(0, h), g)));
for (var j = 1 << b.length - 1, h = -1, i, k, q = b.length + a.length, r, t = 0; t < b.length; t++) {
i = 0;
for (k = q; i < k;) d(t, c +
k) <= g ? i = k : q = k, k = Math.floor((q - i) / 2 + i);
q = k;
i = Math.max(1, c - k + 1);
var p = Math.min(c + k, a.length) + b.length;
k = Array(p + 2);
for (k[p + 1] = (1 << t) - 1; p >= i; p--) {
var w = e[a.charAt(p - 1)];
k[p] = 0 === t ? (k[p + 1] << 1 | 1) & w : (k[p + 1] << 1 | 1) & w | ((r[p + 1] | r[p]) << 1 | 1) | r[p + 1];
if (k[p] & j && (w = d(t, p - 1), w <= g))
if (g = w, h = p - 1, h > c) i = Math.max(1, 2 * c - h);
else break
}
if (d(t + 1, c) > g) break;
r = k
}
return h
};
diff_match_patch.prototype.match_alphabet_ = function(a) {
for (var b = {}, c = 0; c < a.length; c++) b[a.charAt(c)] = 0;
for (c = 0; c < a.length; c++) b[a.charAt(c)] |= 1 << a.length - c - 1;
return b
};
diff_match_patch.prototype.patch_addContext_ = function(a, b) {
if (0 != b.length) {
for (var c = b.substring(a.start2, a.start2 + a.length1), d = 0; b.indexOf(c) != b.lastIndexOf(c) && c.length < this.Match_MaxBits - this.Patch_Margin - this.Patch_Margin;) d += this.Patch_Margin, c = b.substring(a.start2 - d, a.start2 + a.length1 + d);
d += this.Patch_Margin;
(c = b.substring(a.start2 - d, a.start2)) && a.diffs.unshift([0, c]);
(d = b.substring(a.start2 + a.length1, a.start2 + a.length1 + d)) && a.diffs.push([0, d]);
a.start1 -= c.length;
a.start2 -= c.length;
a.length1 +=
c.length + d.length;
a.length2 += c.length + d.length
}
};
diff_match_patch.prototype.patch_make = function(a, b, c) {
var d;
if ("string" == typeof a && "string" == typeof b && "undefined" == typeof c) d = a, b = this.diff_main(d, b, !0), 2 < b.length && (this.diff_cleanupSemantic(b), this.diff_cleanupEfficiency(b));
else if (a && "object" == typeof a && "undefined" == typeof b && "undefined" == typeof c) b = a, d = this.diff_text1(b);
else if ("string" == typeof a && b && "object" == typeof b && "undefined" == typeof c) d = a;
else if ("string" == typeof a && "string" == typeof b && c && "object" == typeof c) d = a, b = c;
else throw Error("Unknown call format to patch_make.");
if (0 === b.length) return [];
c = [];
a = new diff_match_patch.patch_obj;
for (var e = 0, f = 0, g = 0, h = d, j = 0; j < b.length; j++) {
var i = b[j][0],
k = b[j][1];
!e && 0 !== i && (a.start1 = f, a.start2 = g);
switch (i) {
case 1:
a.diffs[e++] = b[j];
a.length2 += k.length;
d = d.substring(0, g) + k + d.substring(g);
break;
case -1:
a.length1 += k.length;
a.diffs[e++] = b[j];
d = d.substring(0, g) + d.substring(g + k.length);
break;
case 0:
k.length <= 2 * this.Patch_Margin && e && b.length != j + 1 ? (a.diffs[e++] = b[j], a.length1 += k.length, a.length2 += k.length) : k.length >= 2 * this.Patch_Margin &&
e && (this.patch_addContext_(a, h), c.push(a), a = new diff_match_patch.patch_obj, e = 0, h = d, f = g)
}
1 !== i && (f += k.length); - 1 !== i && (g += k.length)
}
e && (this.patch_addContext_(a, h), c.push(a));
return c
};
diff_match_patch.prototype.patch_deepCopy = function(a) {
for (var b = [], c = 0; c < a.length; c++) {
var d = a[c],
e = new diff_match_patch.patch_obj;
e.diffs = [];
for (var f = 0; f < d.diffs.length; f++) e.diffs[f] = d.diffs[f].slice();
e.start1 = d.start1;
e.start2 = d.start2;
e.length1 = d.length1;
e.length2 = d.length2;
b[c] = e
}
return b
};
diff_match_patch.prototype.patch_apply = function(a, b) {
if (0 == a.length) return [b, []];
a = this.patch_deepCopy(a);
var c = this.patch_addPadding(a);
b = c + b + c;
this.patch_splitMax(a);
for (var d = 0, e = [], f = 0; f < a.length; f++) {
var g = a[f].start2 + d,
h = this.diff_text1(a[f].diffs),
j, i = -1;
if (h.length > this.Match_MaxBits) {
if (j = this.match_main(b, h.substring(0, this.Match_MaxBits), g), -1 != j && (i = this.match_main(b, h.substring(h.length - this.Match_MaxBits), g + h.length - this.Match_MaxBits), -1 == i || j >= i)) j = -1
} else j = this.match_main(b, h, g);
if (-1 == j) e[f] = !1, d -= a[f].length2 - a[f].length1;
else if (e[f] = !0, d = j - g, g = -1 == i ? b.substring(j, j + h.length) : b.substring(j, i + this.Match_MaxBits), h == g) b = b.substring(0, j) + this.diff_text2(a[f].diffs) + b.substring(j + h.length);
else if (g = this.diff_main(h, g, !1), h.length > this.Match_MaxBits && this.diff_levenshtein(g) / h.length > this.Patch_DeleteThreshold) e[f] = !1;
else {
this.diff_cleanupSemanticLossless(g);
for (var h = 0, k, i = 0; i < a[f].diffs.length; i++) {
var q = a[f].diffs[i];
0 !== q[0] && (k = this.diff_xIndex(g, h));
1 === q[0] ? b = b.substring(0,
j + k) + q[1] + b.substring(j + k) : -1 === q[0] && (b = b.substring(0, j + k) + b.substring(j + this.diff_xIndex(g, h + q[1].length))); - 1 !== q[0] && (h += q[1].length)
}
}
}
b = b.substring(c.length, b.length - c.length);
return [b, e]
};
diff_match_patch.prototype.patch_addPadding = function(a) {
for (var b = this.Patch_Margin, c = "", d = 1; d <= b; d++) c += String.fromCharCode(d);
for (d = 0; d < a.length; d++) a[d].start1 += b, a[d].start2 += b;
var d = a[0],
e = d.diffs;
if (0 == e.length || 0 != e[0][0]) e.unshift([0, c]), d.start1 -= b, d.start2 -= b, d.length1 += b, d.length2 += b;
else if (b > e[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;
0 == e.length || 0 != e[e.length - 1][0] ? (e.push([0,
c
]), d.length1 += b, d.length2 += b) : 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; c < a.length; c++)
if (!(a[c].length1 <= b)) {
var d = a[c];
a.splice(c--, 1);
for (var e = d.start1, f = d.start2, g = ""; 0 !== d.diffs.length;) {
var h = new diff_match_patch.patch_obj,
j = !0;
h.start1 = e - g.length;
h.start2 = f - g.length;
"" !== g && (h.length1 = h.length2 = g.length, h.diffs.push([0, g]));
for (; 0 !== d.diffs.length && h.length1 < b - this.Patch_Margin;) {
var g = d.diffs[0][0],
i = d.diffs[0][1];
1 === g ? (h.length2 += i.length, f += i.length, h.diffs.push(d.diffs.shift()),
j = !1) : -1 === g && 1 == h.diffs.length && 0 == h.diffs[0][0] && i.length > 2 * b ? (h.length1 += i.length, e += i.length, j = !1, h.diffs.push([g, i]), d.diffs.shift()) : (i = i.substring(0, b - h.length1 - this.Patch_Margin), h.length1 += i.length, e += i.length, 0 === g ? (h.length2 += i.length, f += i.length) : j = !1, h.diffs.push([g, i]), i == d.diffs[0][1] ? d.diffs.shift() : 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);
"" !== i &&
(h.length1 += i.length, h.length2 += i.length, 0 !== h.diffs.length && 0 === h.diffs[h.diffs.length - 1][0] ? h.diffs[h.diffs.length - 1][1] += i : 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 < a.length; c++) b[c] = a[c];
return b.join("")
};
diff_match_patch.prototype.patch_fromText = function(a) {
var b = [];
if (!a) return b;
a = a.split("\n");
for (var c = 0, d = /^@@ -(\d+),?(\d*) \+(\d+),?(\d*) @@$/; c < a.length;) {
var e = a[c].match(d);
if (!e) throw Error("Invalid patch string: " + a[c]);
var f = new diff_match_patch.patch_obj;
b.push(f);
f.start1 = parseInt(e[1], 10);
"" === e[2] ? (f.start1--, f.length1 = 1) : "0" == e[2] ? f.length1 = 0 : (f.start1--, f.length1 = parseInt(e[2], 10));
f.start2 = parseInt(e[3], 10);
"" === e[4] ? (f.start2--, f.length2 = 1) : "0" == e[4] ? f.length2 = 0 : (f.start2--, f.length2 =
parseInt(e[4], 10));
for (c++; c < a.length;) {
e = a[c].charAt(0);
try {
var g = decodeURI(a[c].substring(1))
} catch (h) {
throw Error("Illegal escape in patch_fromText: " + g);
}
if ("-" == e) f.diffs.push([-1, g]);
else if ("+" == e) f.diffs.push([1, g]);
else if (" " == e) f.diffs.push([0, g]);
else if ("@" == e) break;
else if ("" !== e) throw Error('Invalid patch mode "' + e + '" in: ' + g);
c++
}
}
return b
};
diff_match_patch.patch_obj = function() {
this.diffs = [];
this.start2 = this.start1 = null;
this.length2 = this.length1 = 0
};
diff_match_patch.patch_obj.prototype.toString = function() {
var a, b;
a = 0 === this.length1 ? this.start1 + ",0" : 1 == this.length1 ? this.start1 + 1 : this.start1 + 1 + "," + this.length1;
b = 0 === this.length2 ? this.start2 + ",0" : 1 == this.length2 ? this.start2 + 1 : this.start2 + 1 + "," + this.length2;
a = ["@@ -" + a + " +" + b + " @@\n"];
var c;
for (b = 0; b < this.diffs.length; b++) {
switch (this.diffs[b][0]) {
case 1:
c = "+";
break;
case -1:
c = "-";
break;
case 0:
c = " "
}
a[b + 1] = c + encodeURI(this.diffs[b][1]) + "\n"
}
return a.join("").replace(/%20/g, " ")
};
this.diff_match_patch = diff_match_patch;
this.DIFF_DELETE = -1;
this.DIFF_INSERT = 1;
this.DIFF_EQUAL = 0;
})()