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/**
* archiver-utils
*
* Copyright (c) 2012-2014 Chris Talkington, contributors.
* Licensed under the MIT license.
* https://github.com/archiverjs/node-archiver/blob/master/LICENSE-MIT
*/
var fs = require('graceful-fs');
var path = require('path');
var _ = require('lodash');
var glob = require('glob');
var file = module.exports = {};
var pathSeparatorRe = /[\/\\]/g;
// Process specified wildcard glob patterns or filenames against a
// callback, excluding and uniquing files in the result set.
var processPatterns = function(patterns, fn) {
// Filepaths to return.
var result = [];
// Iterate over flattened patterns array.
_.flatten(patterns).forEach(function(pattern) {
// If the first character is ! it should be omitted
var exclusion = pattern.indexOf('!') === 0;
// If the pattern is an exclusion, remove the !
if (exclusion) { pattern = pattern.slice(1); }
// Find all matching files for this pattern.
var matches = fn(pattern);
if (exclusion) {
// If an exclusion, remove matching files.
result = _.difference(result, matches);
} else {
// Otherwise add matching files.
result = _.union(result, matches);
}
});
return result;
};
// True if the file path exists.
file.exists = function() {
var filepath = path.join.apply(path, arguments);
return fs.existsSync(filepath);
};
// Return an array of all file paths that match the given wildcard patterns.
file.expand = function() {
var args = _.toArray(arguments);
// If the first argument is an options object, save those options to pass
// into the File.prototype.glob.sync method.
var options = _.isPlainObject(args[0]) ? args.shift() : {};
// Use the first argument if it's an Array, otherwise convert the arguments
// object to an array and use that.
var patterns = Array.isArray(args[0]) ? args[0] : args;
// Return empty set if there are no patterns or filepaths.
if (patterns.length === 0) { return []; }
// Return all matching filepaths.
var matches = processPatterns(patterns, function(pattern) {
// Find all matching files for this pattern.
return glob.sync(pattern, options);
});
// Filter result set?
if (options.filter) {
matches = matches.filter(function(filepath) {
filepath = path.join(options.cwd || '', filepath);
try {
if (typeof options.filter === 'function') {
return options.filter(filepath);
} else {
// If the file is of the right type and exists, this should work.
return fs.statSync(filepath)[options.filter]();
}
} catch(e) {
// Otherwise, it's probably not the right type.
return false;
}
});
}
return matches;
};
// Build a multi task "files" object dynamically.
file.expandMapping = function(patterns, destBase, options) {
options = _.defaults({}, options, {
rename: function(destBase, destPath) {
return path.join(destBase || '', destPath);
}
});
var files = [];
var fileByDest = {};
// Find all files matching pattern, using passed-in options.
file.expand(options, patterns).forEach(function(src) {
var destPath = src;
// Flatten?
if (options.flatten) {
destPath = path.basename(destPath);
}
// Change the extension?
if (options.ext) {
destPath = destPath.replace(/(\.[^\/]*)?$/, options.ext);
}
// Generate destination filename.
var dest = options.rename(destBase, destPath, options);
// Prepend cwd to src path if necessary.
if (options.cwd) { src = path.join(options.cwd, src); }
// Normalize filepaths to be unix-style.
dest = dest.replace(pathSeparatorRe, '/');
src = src.replace(pathSeparatorRe, '/');
// Map correct src path to dest path.
if (fileByDest[dest]) {
// If dest already exists, push this src onto that dest's src array.
fileByDest[dest].src.push(src);
} else {
// Otherwise create a new src-dest file mapping object.
files.push({
src: [src],
dest: dest,
});
// And store a reference for later use.
fileByDest[dest] = files[files.length - 1];
}
});
return files;
};
// reusing bits of grunt's multi-task source normalization
file.normalizeFilesArray = function(data) {
var files = [];
data.forEach(function(obj) {
var prop;
if ('src' in obj || 'dest' in obj) {
files.push(obj);
}
});
if (files.length === 0) {
return [];
}
files = _(files).chain().forEach(function(obj) {
if (!('src' in obj) || !obj.src) { return; }
// Normalize .src properties to flattened array.
if (Array.isArray(obj.src)) {
obj.src = _.flatten(obj.src);
} else {
obj.src = [obj.src];
}
}).map(function(obj) {
// Build options object, removing unwanted properties.
var expandOptions = _.extend({}, obj);
delete expandOptions.src;
delete expandOptions.dest;
// Expand file mappings.
if (obj.expand) {
return file.expandMapping(obj.src, obj.dest, expandOptions).map(function(mapObj) {
// Copy obj properties to result.
var result = _.extend({}, obj);
// Make a clone of the orig obj available.
result.orig = _.extend({}, obj);
// Set .src and .dest, processing both as templates.
result.src = mapObj.src;
result.dest = mapObj.dest;
// Remove unwanted properties.
['expand', 'cwd', 'flatten', 'rename', 'ext'].forEach(function(prop) {
delete result[prop];
});
return result;
});
}
// Copy obj properties to result, adding an .orig property.
var result = _.extend({}, obj);
// Make a clone of the orig obj available.
result.orig = _.extend({}, obj);
if ('src' in result) {
// Expose an expand-on-demand getter method as .src.
Object.defineProperty(result, 'src', {
enumerable: true,
get: function fn() {
var src;
if (!('result' in fn)) {
src = obj.src;
// If src is an array, flatten it. Otherwise, make it into an array.
src = Array.isArray(src) ? _.flatten(src) : [src];
// Expand src files, memoizing result.
fn.result = file.expand(expandOptions, src);
}
return fn.result;
}
});
}
if ('dest' in result) {
result.dest = obj.dest;
}
return result;
}).flatten().value();
return files;
};
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