Add third_party/pexpect

third_party/pexpect/examples/df.py

Index: third_party/pexpect/examples/df.py
diff --git a/third_party/pexpect/examples/df.py b/third_party/pexpect/examples/df.py
new file mode 100644
index 0000000000000000000000000000000000000000..4faa038912961186fd837c86523471feb4f11603
--- /dev/null
+++ b/third_party/pexpect/examples/df.py
@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+
+'''This collects filesystem capacity info using the 'df' command. Tuples of
+filesystem name and percentage are stored in a list. A simple report is
+printed. Filesystems over 95% capacity are highlighted. Note that this does not
+parse filesystem names after the first space, so names with spaces in them will
+be truncated. This will produce ambiguous results for automount filesystems on
+Apple OSX.
+
+PEXPECT LICENSE
+
+    This license is approved by the OSI and FSF as GPL-compatible.
+        http://opensource.org/licenses/isc-license.txt
+
+    Copyright (c) 2012, Noah Spurrier <noah@noah.org>
+    PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
+    PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
+    COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+'''
+
+from __future__ import print_function
+
+from __future__ import absolute_import
+
+import pexpect
+
+child = pexpect.spawn ('df')
+
+# parse 'df' output into a list.
+pattern = "\n(\S+).*?([0-9]+)%"
+filesystem_list = []
+for dummy in range (0, 1000):
+    i = child.expect ([pattern, pexpect.EOF])
+    if i == 0:
+        filesystem_list.append (child.match.groups())
+    else:
+        break
+
+# Print report
+print()
+for m in filesystem_list:
+    s = "Filesystem %s is at %s%%" % (m[0], m[1])
+    # highlight filesystems over 95% capacity
+    if int(m[1]) > 95:
+        s = '! ' + s
+    else:
+        s = '  ' + s
+    print(s)
+