| Elliott Hughes | 6b586e7 | 2021-04-15 13:39:08 -0700 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 2 | # |
| 3 | |
| 4 | import sys, os, string, re |
| 5 | |
| 6 | def usage(): |
| 7 | print"""\ |
| Elliott Hughes | e6ddfc5 | 2013-03-25 14:09:52 -0700 | [diff] [blame] | 8 | usage: genserv < /etc/services > libc/netbsd/net/services.h |
| The Android Open Source Project | 1dc9e47 | 2009-03-03 19:28:35 -0800 | [diff] [blame] | 9 | |
| 10 | this program is used to generate the hard-coded internet service list for the |
| 11 | Bionic C library. |
| 12 | """ |
| 13 | |
| 14 | re_service= re.compile(r"([\d\w\-_]+)\s+(\d+)/(tcp|udp)(.*)") |
| 15 | re_alias= re.compile(r"([\d\w\-_]+)(.*)") |
| 16 | |
| 17 | classService: |
| 18 | def __init__(self,name,port,proto): |
| 19 | self.name= name |
| 20 | self.port= port |
| 21 | self.proto= proto |
| 22 | self.aliases=[] |
| 23 | |
| 24 | def add_alias(self,alias): |
| 25 | self.aliases.append(alias) |
| 26 | |
| 27 | def __str__(self): |
| 28 | result="\\%0o%s"%(len(self.name),self.name) |
| 29 | result+="\\%0o\\%0o"%(((self.port>>8)&255), self.port&255) |
| 30 | if self.proto=="tcp": |
| 31 | result+="t" |
| 32 | else: |
| 33 | result+="u" |
| 34 | |
| 35 | result+="\\%0o"% len(self.aliases) |
| 36 | for aliasin self.aliases: |
| 37 | result+="\\%0o%s"%(len(alias), alias) |
| 38 | |
| 39 | return result |
| 40 | |
| 41 | def parse(f): |
| 42 | result=[]# list of Service objects |
| 43 | for linein f.xreadlines(): |
| 44 | if len(line)>0and line[-1]=="\n": |
| 45 | line= line[:-1] |
| 46 | if len(line)>0and line[-1]=="\r": |
| 47 | line= line[:-1] |
| 48 | |
| 49 | line= string.strip(line) |
| 50 | if len(line)==0or line[0]=="#": |
| 51 | continue |
| 52 | |
| 53 | m= re_service.match(line) |
| 54 | if m: |
| 55 | service=Service( m.group(1), int(m.group(2)), m.group(3)) |
| 56 | rest= string.strip(m.group(4)) |
| 57 | |
| 58 | while1: |
| 59 | m= re_alias.match(rest) |
| 60 | ifnot m: |
| 61 | break |
| 62 | service.add_alias(m.group(1)) |
| 63 | rest= string.strip(m.group(2)) |
| 64 | |
| 65 | result.append(service) |
| 66 | |
| 67 | return result |
| 68 | |
| 69 | services= parse(sys.stdin) |
| 70 | line='/* generated by genserv.py - do not edit */\nstatic const char _services[] = "\\\n' |
| 71 | for sin services: |
| 72 | line+= str(s)+"\\\n" |
| 73 | line+='\\0";\n' |
| 74 | print line |
