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Copy pathcoverage.js
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317 lines (280 loc) · 9.99 KB
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'use strict';
var inherit = require('inherit'),
path = require('path'),
fs = require('fs'),
url = require('url'),
q = require('q'),
qfs = require('q-io/fs'),
http = require('q-io/http'),
css = require('css'),
minimatch = require('minimatch'),
coverage = require('gemini-coverage').api,
SourceMapConsumer = require('source-map').SourceMapConsumer;
module.exports = inherit({
__constructor: function(config) {
this.config = config;
this.stats = [];
this.byfile = {};
this.covDir = path.resolve(this.config.projectRoot, 'gemini-coverage');
this.out = {};
},
addStats: function(stats) {
this.stats.push(stats);
},
processStats: function() {
var _this = this;
this.stats.forEach(function(stat) {
Object.keys(stat).forEach(function(file) {
var rules = _this.byfile[file] = _this.byfile[file] || {};
Object.keys(stat[file]).forEach(function(rule) {
if (!rules[rule]) {
rules[rule] = stat[file][rule];
}
});
});
});
return qfs.makeDirectory(this.covDir)
.fail(function(err) {
// ignoring the fail if directory already exists.
if (err.code !== 'EEXIST') {
return q.reject(err);
}
})
.then(function() {
return q.all(Object.keys(_this.byfile).map(function(file) {
return _this.processFile(file);
}))
.then(function() {
return _this.prepareOutputStats();
})
.then(function(data) {
return _this.writeStatsJson(data);
})
.then(function(data) {
if (_this.config.coverageNoHtml) {
return;
}
return coverage.gen({
sourceRoot: _this.config.sourceRoot,
destDir: path.join(_this.config.projectRoot, 'gemini-coverage')
}, {
coverage: data
});
});
});
},
processFile: function(file, tmpl) {
var _this = this,
cssRelPath = file.replace(this.config.rootUrl, '').replace(/^\//, ''),
cssPath = path.resolve(this.config.sourceRoot, cssRelPath);
if (this.fileExcluded(cssRelPath)) {
return;
}
return http.read({url: file})
.then(function(content) {
var ast = css.parse(content += '');
return q.all([
ast,
content,
_this.getSourceMap(ast, cssPath, file)
]);
})
.spread(function(ast, fileContent, map) {
fileContent += '';
var lines = fileContent.split(/\r?\n/g),
ctx = {media: 0},
out = _this.out;
for (var r = 0; r < ast.stylesheet.rules.length; r++) {
_this.processRule(
ast.stylesheet.rules[r],
{
lines: lines,
file: file,
out: out,
map: map,
docDir: path.dirname(cssPath)
},
ctx);
}
});
},
getSourceMap: function(ast, cssPath, cssUrl) {
var sourceMapUrl = this.findSourceMapPragma(ast);
if (sourceMapUrl) {
return readUrlOrFile(
url.resolve(cssUrl, sourceMapUrl),
path.resolve(path.dirname(cssPath), sourceMapUrl)
)
.fail(function(err) {
if (err.code !== 'ENOENT') {
return q.reject(err);
}
})
.then(function(map) {
return new SourceMapConsumer(JSON.parse(map));
});
}
},
findSourceMapPragma: function(ast) {
var re = /^#\s*sourceMappingUrl=([^\s]+)/i;
for (var r = 0; r < ast.stylesheet.rules.length; r++) {
var rule = ast.stylesheet.rules[r];
if (rule.type !== 'comment') {
continue;
}
var match = rule.comment.match(re);
if (match) {
return decodeURI(match[1]);
}
}
},
processRule: function(rule, opts, ctx) {
if (rule.type !== 'rule') {
if (rule.type === 'media') {
rule.rules.forEach(function(childRule) {
this.processRule(
childRule,
{
lines: opts.lines,
file: opts.file,
out: opts.out,
group: true,
map: opts.map,
docDir: opts.docDir
},
ctx);
}, this);
ctx.media++;
}
return;
}
var cls = 'none';
for (var sel = 0; sel < rule.selectors.length; sel++) {
var key = rule.selectors[sel];
if (opts.group) {
key = '?' + ctx.media + ':' + key;
}
var selector = this.byfile[opts.file][key];
if (selector) {
cls = 'partial';
if (selector.within) {
cls = 'covered';
}
break;
}
}
var sourceStart = getPosition(rule.position.start, opts.file, opts.map),
sourceEnd = getPosition(rule.position.end, opts.file, opts.map),
// Synchronous realpath() is used because of original method is totally synchronous and recursive,
// while the order of recursive calls is important. Making the code being asynchronous won't make
// much benefit considering only one async call can be executed to guarantee the calling order.
src = path.relative(
this.config.sourceRoot,
fs.realpathSync(sourceStart.source?
path.resolve(opts.docDir, sourceStart.source) :
opts.file.replace(this.config.rootUrl, '').replace(/^\//, ''))
);
var blocks = (opts.out[src] = opts.out[src] || {}),
posKey = sourceStart.line + ':' + sourceStart.column + ':' + sourceEnd.line + ':' + sourceEnd.column,
block = blocks[posKey];
if (block) {
var types = {
'none': 0,
'partial': 1,
'covered': 2
};
if (types[cls] > types[block.type]) {
block.type = cls;
}
} else {
blocks[posKey] = {
start: {
line: sourceStart.line,
column: sourceStart.column
},
end: {
line: sourceEnd.line,
column: sourceEnd.column
},
type: cls
};
}
},
fileExcluded: function(path) {
for (var i = 0; i < this.config.coverageExclude.length; i++) {
if (minimatch(path, this.config.coverageExclude[i], {matchBase: true})) {
return true;
}
}
return false;
},
writeStatsJson: function(data) {
return qfs.write(
path.join(this.covDir, 'coverage.json'),
JSON.stringify(data, null, 4)
).thenResolve(data);
},
prepareOutputStats: function() {
var _this = this,
stat = {total: 0, covered: 0};
return {
files: Object.keys(this.out)
.filter(function(file) {
return !_this.fileExcluded(file);
})
.map(function(file) {
var covered = 0,
blocks = Object.keys(_this.out[file]).map(function(blockKey) {
var block = _this.out[file][blockKey];
if (block.type === 'covered') {
covered++;
}
return block;
});
stat.covered += covered;
stat.total += blocks.length;
return {
file: file,
blocks: blocks,
stat: {
total: blocks.length,
covered: covered,
percent: Math.round(covered / blocks.length * 100)
}
};
}),
total: stat.total,
covered: stat.covered,
percent: Math.round(stat.covered / stat.total * 100)
};
}
});
function getPosition(originalPos, file, map) {
// amend rule position via source map if available
if (map) {
map = map.originalPositionFor({
line: originalPos.line,
column: originalPos.column
});
if (map.source) {
return map;
} else {
console.warn(
'Source map does not provide mapping for %s [%s:%s]. Report might be inaccurate.',
file,
originalPos.line,
originalPos.column);
}
}
// return original parser position if source map is not available or it doesn't provide mapping
return originalPos;
}
function readUrlOrFile(url, file) {
return http.read({url: url})
.fail(function(err) {
return qfs.read(file);
})
.then(function(content) {
return content + '';
});
}