Add the em-config tool

This tool is useful to use in shell scripts, etc in order to access
variables defined in the ~/.emscripten file without depending on the
details on how to read and parse it.

1 files changed, 24 insertions, 0 deletions

diff --git a/em-config b/em-config
new file mode 100755
index 00000000..dee399ed
--- /dev/null
+++ b/em-config
@@ -0,0 +1,24 @@
+#!/usr/bin/env python
+
+'''
+This is a helper tool which is designed to make it possible
+for other apps to read emscripten's configuration variables
+in a unified way.  Usage:
+
+  em-config VAR_NAME
+
+This tool prints the value of the variable to stdout if one
+is found, or exits with 1 if the variable does not exist.
+'''
+
+import os, sys, re
+from tools import shared
+
+if len(sys.argv) != 2 or \
+  not re.match(r"^[\w\W_][\w\W_\d]*$", sys.argv[1]) or \
+  not (sys.argv[1] in dir(shared)):
+  print 'Usage: em-config VAR_NAME'
+  exit(1)
+
+print eval('shared.' + sys.argv[1])
+