From 6e76f8485768d7d6a8f52b179c17c6949e9941d4 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sat, 30 Oct 2010 09:42:48 +0000
Subject: [PATCH] Script to add option command-line option cross reference.

---
 doc/optref.py | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100755 doc/optref.py

diff --git a/doc/optref.py b/doc/optref.py
new file mode 100755
index 00000000..4e5fc0d3
--- /dev/null
+++ b/doc/optref.py
@@ -0,0 +1,70 @@
+#!/usr/bin/env python
+import re
+import sys
+from pprint import pprint
+
+def enum_options(file):
+    # key = *opts*, value = refid, remove proceeding -- from long
+    # option name and s/-/_/g and prepend '_optref'
+    ref_db = {}
+    p = re.compile(r'^\*(-[a-zA-Z0-9-]+)\*(?:,\s*\*(-[a-zA-Z0-9-]+)\*)?.*::$')
+    for line in file:
+        m = p.match(line)
+        if m:
+            if m.group(2) is None:
+                short_opt = None
+                long_opt = m.group(1)
+            else:
+                short_opt = m.group(1)
+                long_opt = m.group(2)
+            ref_id = make_ref_id(long_opt)
+
+            if short_opt in ref_db:
+                print "warn: duplicate short_opt", short_opt
+            if long_opt in ref_db:
+                print "warn: duplicate long_opt", log_opt
+
+            if short_opt:
+                ref_db[short_opt] = ref_id
+            ref_db[long_opt] = ref_id
+    return ref_db
+
+def make_ref_id(long_opt):
+    return 'aria2_optref_'+long_opt.strip('*').lstrip('-').replace('-', '_')
+
+def make_cross_ref(out, file, ref_db):
+    opt_def = re.compile(r'^\*(-[a-zA-Z0-9-]+)\*(?:,\s*\*(-[a-zA-Z0-9-]+)\*)?.*::$')
+    opt_ref = re.compile(r'\*(-[a-zA-Z0-9-]+)\*')
+    for line in file:
+        m = opt_def.match(line)
+        if m:
+            if m.group(2) is None:
+                long_opt = m.group(1)
+            else:
+                long_opt = m.group(2)
+            out.write('[[{0}]]'.format(ref_db[long_opt]))
+            out.write(line)
+            continue
+        pos = 0
+        while 1:
+            m = opt_ref.search(line, pos)
+            if m:
+                opt = line[m.start(1):m.end(1)]
+                if opt in ref_db:
+                    out.write(line[pos:m.start(0)])
+                    out.write('*<<{0}, {1}>>*'.format(ref_db[opt], opt))
+                else:
+                    print "warn: not in ref_db", opt
+                    out.write(line[pos:m.end(0)])
+                pos = m.end(0)
+            else:
+                out.write(line[pos:])
+                break
+
+if __name__ == '__main__':
+    with open(sys.argv[1]) as f:
+        ref_db = enum_options(f)
+    with open(sys.argv[1]) as f:
+        with open(sys.argv[2], 'wb') as out:
+            make_cross_ref(out, f, ref_db)
+