Initial Import

node_modules/shelljs/src/test.js

@@ -0,0 +1,85 @@
+var common = require('./common');
+var fs = require('fs');
+
+//@
+//@ ### test(expression)
+//@ Available expression primaries:
+//@
+//@ + `'-b', 'path'`: true if path is a block device
+//@ + `'-c', 'path'`: true if path is a character device
+//@ + `'-d', 'path'`: true if path is a directory
+//@ + `'-e', 'path'`: true if path exists
+//@ + `'-f', 'path'`: true if path is a regular file
+//@ + `'-L', 'path'`: true if path is a symboilc link
+//@ + `'-p', 'path'`: true if path is a pipe (FIFO)
+//@ + `'-S', 'path'`: true if path is a socket
+//@
+//@ 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)
+    common.error('no path given');
+
+  // hack - only works with unary primaries
+  options = common.parseOptions(options, {
+    'b': 'block',
+    'c': 'character',
+    'd': 'directory',
+    'e': 'exists',
+    'f': 'file',
+    'L': 'link',
+    'p': 'pipe',
+    'S': 'socket'
+  });
+
+  var canInterpret = false;
+  for (var key in options)
+    if (options[key] === true) {
+      canInterpret = true;
+      break;
+    }
+
+  if (!canInterpret)
+    common.error('could not interpret expression');
+
+  if (options.link) {
+    try {
+      return fs.lstatSync(path).isSymbolicLink();
+    } catch(e) {
+      return false;
+    }
+  }
+
+  if (!fs.existsSync(path))
+    return false;
+
+  if (options.exists)
+    return true;
+
+  var stats = fs.statSync(path);
+
+  if (options.block)
+    return stats.isBlockDevice();
+
+  if (options.character)
+    return stats.isCharacterDevice();
+
+  if (options.directory)
+    return stats.isDirectory();
+
+  if (options.file)
+    return stats.isFile();
+
+  if (options.pipe)
+    return stats.isFIFO();
+
+  if (options.socket)
+    return stats.isSocket();
+} // test
+module.exports = _test;