2a09d1a4
 liuqimichale
添加宜春 天水 宣化
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
/**
* Module dependencies.
*/
var SourceMap = require('source-map').SourceMapGenerator;
var SourceMapConsumer = require('source-map').SourceMapConsumer;
var sourceMapResolve = require('source-map-resolve');
var urix = require('urix');
var fs = require('fs');
var path = require('path');
/**
* Expose `mixin()`.
*/
module.exports = mixin;
/**
* Mixin source map support into `compiler`.
*
* @param {Compiler} compiler
* @api public
*/
function mixin(compiler) {
compiler._comment = compiler.comment;
compiler.map = new SourceMap();
compiler.position = { line: 1, column: 1 };
compiler.files = {};
for (var k in exports) compiler[k] = exports[k];
}
/**
* Update position.
*
* @param {String} str
* @api private
*/
exports.updatePosition = function(str) {
var lines = str.match(/\n/g);
if (lines) this.position.line += lines.length;
var i = str.lastIndexOf('\n');
this.position.column = ~i ? str.length - i : this.position.column + str.length;
};
/**
* Emit `str`.
*
* @param {String} str
* @param {Object} [pos]
* @return {String}
* @api private
*/
exports.emit = function(str, pos) {
if (pos) {
var sourceFile = urix(pos.source || 'source.css');
this.map.addMapping({
source: sourceFile,
generated: {
line: this.position.line,
column: Math.max(this.position.column - 1, 0)
},
original: {
line: pos.start.line,
column: pos.start.column - 1
}
});
this.addFile(sourceFile, pos);
}
this.updatePosition(str);
return str;
};
/**
* Adds a file to the source map output if it has not already been added
* @param {String} file
* @param {Object} pos
*/
exports.addFile = function(file, pos) {
if (typeof pos.content !== 'string') return;
if (Object.prototype.hasOwnProperty.call(this.files, file)) return;
this.files[file] = pos.content;
};
/**
* Applies any original source maps to the output and embeds the source file
* contents in the source map.
*/
exports.applySourceMaps = function() {
Object.keys(this.files).forEach(function(file) {
var content = this.files[file];
this.map.setSourceContent(file, content);
if (this.options.inputSourcemaps !== false) {
var originalMap = sourceMapResolve.resolveSync(
content, file, fs.readFileSync);
if (originalMap) {
var map = new SourceMapConsumer(originalMap.map);
var relativeTo = originalMap.sourcesRelativeTo;
this.map.applySourceMap(map, file, urix(path.dirname(relativeTo)));
}
}
}, this);
};
/**
* Process comments, drops sourceMap comments.
* @param {Object} node
*/
exports.comment = function(node) {
if (/^# sourceMappingURL=/.test(node.comment))
return this.emit('', node.position);
else
return this._comment(node);
};
|
