1 files changed, 67 insertions, 0 deletions
diff --git a/src/gperf_fold_key_conv.py b/src/gperf_fold_key_conv.py
new file mode 100755
index 0000000..bdf57ad
--- /dev/null
+++ b/src/gperf_fold_key_conv.py
@@ -0,0 +1,67 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+import sys
+import re
+
+REG_LINE_GPERF = re.compile('#line .+gperf"')
+REG_HASH_FUNC = re.compile('hash\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+unsigned\s+int\s+len\s*\)')
+REG_STR_AT = re.compile('str\[(\d+)\]')
+REG_RETURN_TYPE = re.compile('^const\s+int\s*\*')
+REG_FOLD_KEY = re.compile('unicode_fold(\d)_key\s*\(register\s+const\s+char\s*\*\s*str,\s*register\s+unsigned\s+int\s+len\)')
+REG_ENTRY = re.compile('\{".*?",\s*(-?\d+)\s*\}')
+REG_IF_LEN = re.compile('if\s*\(\s*len\s*<=\s*MAX_WORD_LENGTH.+')
+REG_GET_HASH = re.compile('(?:register\s+)?(?:unsigned\s+)?int\s+key\s*=\s*hash\s*\(str,\s*len\);')
+REG_GET_CODE = re.compile('(?:register\s+)?const\s+char\s*\*\s*s\s*=\s*wordlist\[key\]\.name;')
+REG_CODE_CHECK = re.compile('if\s*\(\*str\s*==\s*\*s\s*&&\s*!strncmp.+\)')
+REG_RETURN_WL = re.compile('return\s+&wordlist\[key\];')
+REG_RETURN_0 = re.compile('return 0;')
+
+def parse_line(s, key_len):
+    s = s.rstrip()
+
+    r = re.sub(REG_LINE_GPERF, '', s)
+    if r != s: return r
+    r = re.sub(REG_HASH_FUNC, 'hash(OnigCodePoint codes[])', s)
+    if r != s: return r
+    r = re.sub(REG_STR_AT, 'onig_codes_byte_at(codes, \\1)', s)
+    if r != s: return r
+    r = re.sub(REG_RETURN_TYPE, 'int', s)
+    if r != s: return r
+    r = re.sub(REG_FOLD_KEY, 'unicode_fold\\1_key(OnigCodePoint codes[])', s)
+    if r != s: return r
+    r = re.sub(REG_ENTRY, '\\1', s)
+    if r != s: return r
+    r = re.sub(REG_IF_LEN, 'if (0 == 0)', s)
+    if r != s: return r
+    r = re.sub(REG_GET_HASH, 'int key = hash(codes);', s)
+    if r != s: return r
+    r = re.sub(REG_GET_CODE, 'int index = wordlist[key];', s)
+    if r != s: return r
+    r = re.sub(REG_CODE_CHECK,
+               'if (index >= 0 && onig_codes_cmp(codes, OnigUnicodeFolds%d + index, %d) == 0)' % (key_len, key_len), s)
+    if r != s: return r
+
+    r = re.sub(REG_RETURN_WL, 'return index;', s)
+    if r != s: return r
+    r = re.sub(REG_RETURN_0, 'return -1;', s)
+    if r != s: return r
+
+    return s
+
+def parse_file(f, key_len):
+    print "/* This file was converted by gperf_fold_key_conv.py\n      from gperf output file. */"
+
+    line = f.readline()
+    while line:
+        s = parse_line(line, key_len)
+        print s
+        line = f.readline()
+
+
+# main
+argv = sys.argv
+argc = len(argv)
+
+key_len = int(argv[1])
+parse_file(sys.stdin, key_len)