From 1a7aa73b262f3ab0ac7529957ea6de9ba9122031 Mon Sep 17 00:00:00 2001
From: Cas Cremers <cas.cremers@gmail.com>
Date: Wed, 20 Aug 2008 16:02:19 +0200
Subject: [PATCH] Created a small program that can find unused functions.

---
 src/find-unused-functions.py | 59 ++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100755 src/find-unused-functions.py

diff --git a/src/find-unused-functions.py b/src/find-unused-functions.py
new file mode 100755
index 0000000..dac13b3
--- /dev/null
+++ b/src/find-unused-functions.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python
+
+import commands
+import sys
+
+
+def findfunctions(excludes):
+    """
+    Extract functions from tags file
+    """
+    fh = open("tags",'r')
+    dict = {}
+    for l in fh.readlines():
+        data = l.strip().split('\t')
+        if len(data) >= 4:
+            fn = data[0]
+            sourcefile = data[1]
+            etype = data[3]
+            if not fn.startswith("!_TAG_"):
+                if sourcefile not in excludes:
+                    if etype in ['f']:
+                        dict[fn] = sourcefile
+    return dict
+
+def main():
+    args = []
+    if len(sys.argv) > 0:
+        args = sys.argv[1:]
+
+    mincount = 0
+    if len(args) > 0:
+        mincount = int(args[0])
+
+    """ Force indent """
+    cmd = "indent *.c *.h"
+    output = commands.getoutput(cmd)
+
+    """ Force ctags """
+    cmd = "ctags *.c *.h"
+    output = commands.getoutput(cmd)
+
+    excludes = ['scanner.c','scanner.h','parser.c','parser.h']
+    fnames = findfunctions(excludes)
+    for fname in fnames.keys():
+        """
+        The ..* construct makes sure that function definitions are
+        skipped (based on the indent settings
+        """
+        cmd = "grep '..*%s' *.c" % (fname)
+        #print cmd
+        output = commands.getoutput(cmd).splitlines()
+        if len(output) <= mincount:
+            print "%s\t%s" % (fnames[fname],fname)
+            if len(output) > 0:
+                print output
+
+if __name__ == '__main__':
+    main()
+