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var common = require('./common');
var fs = require('fs');
//@
//@ ### cat(file [, file ...])
//@ ### cat(file_array)
//@
//@ Examples:
//@
//@ ```javascript
//@ var str = cat('file*.txt');
//@ var str = cat('file1', 'file2');
//@ var str = cat(['file1', 'file2']); // same as above
//@ ```
//@
//@ Returns a string containing the given file, or a concatenated string
//@ containing the files if more than one file is given (a new line character is
//@ introduced between each file). Wildcard `*` accepted.
function _cat(options, files) {
var cat = '';
if (!files)
common.error('no paths given');
if (typeof files === 'string')
files = [].slice.call(arguments, 1);
// if it's array leave it as it is
files = common.expand(files);
files.forEach(function(file) {
if (!fs.existsSync(file))
common.error('no such file or directory: ' + file);
cat += fs.readFileSync(file, 'utf8') + '\n';
});
if (cat[cat.length-1] === '\n')
cat = cat.substring(0, cat.length-1);
return common.ShellString(cat);
}
module.exports = _cat;
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