1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
#!/usr/bin/env python2.3
import re, sys
import textwrap
files = sys.argv[1:]
funcDeclaredIn = {}
fileDeclares = {}
functionCalls = {}
funcCalledByFile = {}
funcCalledByFunc = {}
cpp_re = re.compile(r'//.*$')
c_re = re.compile(r'/[*]+(?:[^*]+|[*]+[^/*])*[*]+/', re.M|re.S)
for fname in files:
f = open(fname, 'r')
curFunc = "???"
functionCalls.setdefault(curFunc,{})
lineno = 0
body = f.read()
body = cpp_re.sub(" ",body)
body = c_re.sub(" ",body)
#if fname == 'dns.c': print body
for line in body.split("\n"):
lineno += 1
m = re.match(r'^[^\s/].*\s(\w+)\([^;]*$', line)
if m:
#print line, "->", m.group(1)
curFunc = m.group(1)
if curFunc[0] == '_': curFunc = curFunc[1:]
functionCalls.setdefault(curFunc,{})
funcDeclaredIn[m.group(1)] = fname
fileDeclares.setdefault(fname, {})[m.group(1)] = 1
continue
m = re.match(r'^(\w+)\([^;]', line)
if m:
#print line, "->", m.group(1)
curFunc = m.group(1)
if curFunc[0] == '_': curFunc = curFunc[1:]
functionCalls.setdefault(curFunc,{})
funcDeclaredIn[m.group(1)] = fname
fileDeclares.setdefault(fname, {})[m.group(1)] = 1
continue
while line:
m = re.search(r'(\w+)\(', line)
if not m: break
#print fname, line, curFunc, "->", m.group(1)
fn = m.group(1)
if fn[0] == '_':
fn = fn[1:]
functionCalls[curFunc][m.group(1)] = 1
#if curFunc == "???":
# print ">>!!!!! at %s:%s"%(fname,lineno)
funcCalledByFunc.setdefault(m.group(1), {})[curFunc]=1
funcCalledByFile.setdefault(m.group(1), {})[fname]=1
line = line[m.end():]
f.close()
fileUsers = {}
fileUses = {}
for fname in files:
print "%s:"%fname
users = {}
for func in fileDeclares[fname]:
cb = funcCalledByFile.get(func,{}).keys()
for f in cb: users[f] = 1
#print "users[%s] = %s"%(f,users[f])
users = users.keys()
users.sort()
fileUsers[fname] = users
for user in users:
fileUses.setdefault(user,[]).append(fname)
if user == fname: continue
print " from %s:"%user
for func in fileDeclares[fname]:
if funcCalledByFile.get(func,{}).get(user,0):
print " %s()"%func
def wrap(s, pre):
return textwrap.fill(s,
width=77, initial_indent=pre,
subsequent_indent=" "*len(pre))
for fname in files:
print
print "===== %s"%fname
print wrap(" ".join(fileUses[fname]),
" Calls: ")
print wrap(" ".join(fileUsers[fname]),
" Called by: ")
print "=============================="
funcnames = functionCalls.keys()
funcnames.sort()
if 1:
for func in funcnames:
print "===== %s"%func
callers = [c for c in funcCalledByFunc.get(func,{}).keys()
if c != "???"]
callers.sort()
called = [c for c in functionCalls[func].keys() if c != "???" and
c in funcnames]
called.sort()
print wrap(" ".join(callers),
" Called by:")
print wrap(" ".join(called),
" Calls:")
# simple topological sort.
functionDepth = {}
while 1:
BIG = 1000000
any = 0
for func in funcnames:
if functionDepth.has_key(func):
continue
called = [c for c in functionCalls[func] if c != func and
functionCalls.has_key(c)]
if len(called) == 0:
functionDepth[func] = 0
#print "Depth(%s)=%s"%(func,0)
any = 1
continue
calledDepths = [ functionDepth.get(c,BIG) for c in called ]
if max(calledDepths) < BIG:
d = functionDepth[func] = max(calledDepths)+1
#print "Depth(%s)=%s"%(func,d)
any = 1
continue
if not any:
break
# compute lexical closure.
cycCalls = {}
for func in funcnames:
if not functionDepth.has_key(func):
calls = [ c for c in functionCalls[func] if c != func and
functionCalls.has_key(c) and not functionDepth.has_key(c)]
cycCalls[func] = d = {}
for c in calls:
d[c]=1
cycNames = cycCalls.keys()
while 1:
any = 0
for func in cycNames:
L = len(cycCalls[func])
for called in cycCalls[func].keys():
cycCalls[func].update(cycCalls[called])
if L != len(cycCalls[func]):
any = 1
if not any:
break
depthList = [ (v,k) for k,v in functionDepth.items() ]
depthList.sort()
cycList = [ (len(v),k) for k,v in cycCalls.items() ]
cycList.sort()
for depth,name in depthList:
print "Depth[%s]=%s"%(name,depth)
for bredth,name in cycList:
print "Width[%s]=%s"%(name,bredth)
print "Sorted %s / %s"%(len(functionDepth),len(funcnames))
|