Code coverage report for istanbul/lib/util/insertion-text.js

Statements: 100% (50 / 50)      Branches: 100% (27 / 27)      Functions: 100% (9 / 9)      Lines: 100% (50 / 50)     

All files » istanbul/lib/util/ » insertion-text.js
1 /*
2 Copyright (c) 2012, Yahoo! Inc. All rights reserved.
3 Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
4 */
5
6 1 function InsertionText(text, consumeBlanks) {
7 204 this.text = text;
8 204 this.origLength = text.length;
9 204 this.offsets = [];
10 204 this.consumeBlanks = consumeBlanks;
11 204 this.startPos = this.findFirstNonBlank();
12 204 this.endPos = this.findLastNonBlank();
13 }
14
15 1 var WHITE_RE = /[ \f\n\r\t\v\u00A0\u2028\u2029]/;
16
17 1 InsertionText.prototype = {
18
19 findFirstNonBlank: function () {
20 204 var pos = -1,
21 text = this.text,
22 len = text.length,
23 i;
24 204 for (i = 0; i < len; i += 1) {
25 692 if (!text.charAt(i).match(WHITE_RE)) {
26 148 pos = i;
27 148 break;
28 }
29 }
30 204 return pos;
31 },
32 findLastNonBlank: function () {
33 204 var text = this.text,
34 len = text.length,
35 pos = text.length + 1,
36 i;
37 204 for (i = len - 1; i >= 0; i -= 1) {
38 164 if (!text.charAt(i).match(WHITE_RE)) {
39 148 pos = i;
40 148 break;
41 }
42 }
43 204 return pos;
44 },
45 originalLength: function () {
46 101 return this.origLength;
47 },
48
49 insertAt: function (col, str, insertBefore, consumeBlanks) {
50 83 consumeBlanks = typeof consumeBlanks === 'undefined' ? this.consumeBlanks : consumeBlanks;
51 83 col = col > this.originalLength() ? this.originalLength() : col;
52 83 col = col < 0 ? 0 : col;
53
54 83 if (consumeBlanks) {
55 54 if (col <= this.startPos) {
56 18 col = 0;
57 }
58 54 if (col > this.endPos) {
59 26 col = this.origLength;
60 }
61 }
62
63 83 var len = str.length,
64 offset = this.findOffset(col, len, insertBefore),
65 realPos = col + offset,
66 text = this.text;
67 83 this.text = text.substring(0, realPos) + str + text.substring(realPos);
68 83 return this;
69 },
70
71 findOffset: function (pos, len, insertBefore) {
72 83 var offsets = this.offsets,
73 offsetObj,
74 cumulativeOffset = 0,
75 i;
76
77 83 for (i = 0; i < offsets.length; i += 1) {
78 50 offsetObj = offsets[i];
79 50 if (offsetObj.pos < pos || (offsetObj.pos === pos && !insertBefore)) {
80 46 cumulativeOffset += offsetObj.len;
81 }
82 50 if (offsetObj.pos >= pos) {
83 9 break;
84 }
85 }
86 83 if (offsetObj && offsetObj.pos === pos) {
87 8 offsetObj.len += len;
88 } else {
89 75 offsets.splice(i, 0, { pos: pos, len: len });
90 }
91 83 return cumulativeOffset;
92 },
93
94 wrap: function (startPos, startText, endPos, endText, consumeBlanks) {
95 34 this.insertAt(startPos, startText, true, consumeBlanks);
96 34 this.insertAt(endPos, endText, false, consumeBlanks);
97 34 return this;
98 },
99
100 wrapLine: function (startText, endText) {
101 1 this.wrap(0, startText, this.originalLength(), endText);
102 },
103
104 toString: function () {
105 186 return this.text;
106 }
107 };
108
109 1 module.exports = InsertionText;