nghttp2/gentokenlookup.py

70 lines
1.5 KiB
Python
Raw Normal View History

#!/usr/bin/env python
def to_enum_hd(k, prefix):
res = prefix + '_'
for c in k.upper():
if c == ':' or c == '-':
res += '_'
continue
res += c
return res
def build_header(headers):
res = {}
for k in headers:
size = len(k)
if size not in res:
res[size] = {}
ent = res[size]
c = k[-1]
if c not in ent:
ent[c] = []
ent[c].append(k)
return res
def gen_enum(tokens, prefix):
print '''\
enum {'''
for k in sorted(tokens):
print '''\
{},'''.format(to_enum_hd(k, prefix))
print '''\
{}_MAXIDX,
}};'''.format(prefix)
def gen_index_header(tokens, prefix):
print '''\
int lookup_token(const uint8_t *name, size_t namelen) {
switch (namelen) {'''
b = build_header(tokens)
for size in sorted(b.keys()):
ents = b[size]
print '''\
case {}:'''.format(size)
print '''\
switch (name[{}]) {{'''.format(size - 1)
for c in sorted(ents.keys()):
headers = sorted(ents[c])
print '''\
case '{}':'''.format(c)
for k in headers:
print '''\
if (util::streq_l("{}", name, {})) {{
return {};
}}'''.format(k[:-1], size - 1, to_enum_hd(k, prefix))
print '''\
break;'''
print '''\
}
break;'''
print '''\
}
return -1;
}'''
def gentokenlookup(tokens, prefix):
gen_enum(tokens, prefix)
print ''
gen_index_header(tokens, prefix)