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adding new find() commands

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This commit is contained in:
Artur Adib 2012-03-14 17:50:49 -04:00
parent 5982cac7c8
commit c3bdf1e037
3 changed files with 140 additions and 7 deletions
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85
external/shelljs/shell.js vendored
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@ -57,6 +57,7 @@ function _pwd(options) {
};
exports.pwd = wrap('pwd', _pwd);
//@
//@ #### ls([options ,] path [,path ...])
//@ #### ls([options ,] path_array)
@ -159,6 +160,54 @@ function _ls(options, paths) {
exports.ls = wrap('ls', _ls);
//@
//@ #### find(path [,path ...])
//@ #### find(path_array)
//@ Examples:
//@
//@ ```javascript
//@ find('src', 'lib');
//@ find(['src', 'lib']); // same as above
//@ for (file in find('.')) {
//@ if (!file.match(/\.js$/))
//@ continue;
//@ // all files at this point end in '.js'
//@ }
//@ ```
//@
//@ Returns list of all files (however deep) in the given paths. For convenient iteration
//@ via `for (file in find(...))`, the format returned is a hash object:
//@ `{ 'file1':null, 'dir1/file2':null, ...}`.
//@
//@ The main difference from `ls('-R', path)` is that the resulting file names
//@ include the base directories, e.g. `lib/resources/file1` instead of just `file1`.
function _find(options, paths) {
if (!paths)
error('no path specified');
else if (typeof paths === 'object')
paths = paths; // assume array
else if (typeof paths === 'string')
paths = [].slice.call(arguments, 1);
var hash = {};
// why not simply do ls('-R', paths)? because the output wouldn't give the base dirs
// to get the base dir in the output, we need instead ls('-R', 'dir/*') for every directory
paths.forEach(function(file){
hash[file] = null;
if (fs.statSync(file).isDirectory()) {
for (subfile in _ls('-Ra', file+'/*'))
hash[subfile] = null;
}
});
return hash;
}
exports.find = wrap('find', _find);
//@
//@ #### cp('[options ,] source [,source ...], dest')
//@ #### cp('[options ,] source_array, dest')
@ -438,6 +487,42 @@ function _mkdir(options, dirs) {
}; // mkdir
exports.mkdir = wrap('mkdir', _mkdir);
//@
//@ #### test(expression)
//@ Available expression primaries:
//@
//@ + `'-d', 'path'`: true if path is a directory
//@ + `'-f', 'path'`: true if path is a regular file
//@
//@ Examples:
//@
//@ ```javascript
//@ if (test('-d', path)) { /* do something with dir */ };
//@ if (!test('-f', path)) continue; // skip if it's a regular file
//@ ```
//@
//@ Evaluates expression using the available primaries and returns corresponding value.
function _test(options, path) {
if (!path)
error('no path given');
// hack - only works with unary primaries
options = parseOptions(options, {
'd': 'directory',
'f': 'file'
});
if (!options.directory && !options.file)
error('could not interpret expression');
if (options.directory)
return fs.existsSync(path) && fs.statSync(path).isDirectory();
if (options.file)
return fs.existsSync(path) && fs.statSync(path).isFile();
}; // test
exports.test = wrap('test', _test);
//@
//@ #### cat(file [, file ...])
//@ #### cat(file_array)