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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
"""An attempt at an unweave script.
Jack Jansen, jack@oratrix.com, 13-Dec-00
"""
import re
import sys
import macfs
import os
import macostools
BEGINDEFINITION=re.compile("^<<(?P<name>.*)>>=\s*")
USEDEFINITION=re.compile("^(?P<pre>.*)<<(?P<name>.*)>>(?P<post>[^=].*)")
ENDDEFINITION=re.compile("^@")
DEFAULT_CONFIG="""
config = [
("^.*\.cp$", ":unweave-src"),
("^.*\.h$", ":unweave-include"),
]
genlinedirectives = 0
gencomments = 1
"""
class Processor:
def __init__(self, filename, config={}):
self.items = {}
self.filename = filename
self.fp = open(filename)
self.lineno = 0
self.resolving = {}
self.resolved = {}
self.pushback = None
# Options
if config.has_key("genlinedirectives"):
self.genlinedirectives = config["genlinedirectives"]
else:
self.genlinedirectives = 1
if config.has_key("gencomments"):
self.gencomments = config["gencomments"]
else:
self.gencomments = 0
def _readline(self):
"""Read a line. Allow for pushback"""
if self.pushback:
rv = self.pushback
self.pushback = None
return rv
self.lineno = self.lineno + 1
return self.lineno, self.fp.readline()
def _linedirective(self, lineno):
"""Return a #line cpp directive for this file position"""
return '#line %d "%s"\n'%(lineno-3, os.path.split(self.filename)[1])
def _readitem(self):
"""Read the definition of an item. Insert #line where needed. """
rv = []
while 1:
lineno, line = self._readline()
if not line:
break
if ENDDEFINITION.search(line):
break
if BEGINDEFINITION.match(line):
self.pushback = lineno, line
break
mo = USEDEFINITION.match(line)
if mo:
pre = mo.group('pre')
if pre:
## rv.append((lineno, pre+'\n'))
rv.append((lineno, pre))
rv.append((lineno, line))
if mo:
post = mo.group('post')
if post and post != '\n':
rv.append((lineno, post))
return rv
def _define(self, name, value):
"""Define an item, or append to an existing definition"""
if self.items.has_key(name):
self.items[name] = self.items[name] + value
else:
self.items[name] = value
def read(self):
"""Read the source file and store all definitions"""
savedcomment = []
while 1:
lineno, line = self._readline()
if not line: break
mo = BEGINDEFINITION.search(line)
if mo:
name = mo.group('name')
value = self._readitem()
if self.gencomments:
defline = [(lineno, '// <%s>=\n'%name)]
if savedcomment:
savedcomment = savedcomment + [(lineno, '//\n')] + defline
else:
savedcomment = defline
savedcomment = self._extendlines(savedcomment)
value = savedcomment + value
savedcomment = []
self._define(name, value)
else:
if self.gencomments:
# It seems initial blank lines are ignored:-(
if savedcomment or line.strip():
savedcomment.append((lineno, '// '+line))
def _extendlines(self, comment):
# This routine mimicks some artefact of Matthias' code.
rv = []
for lineno, line in comment:
line = line[:-1]
if len(line) < 75:
line = line + (75-len(line))*' '
line = line + '\n'
rv.append((lineno, line))
return rv
def resolve(self):
"""Resolve all references"""
for name in self.items.keys():
self._resolve_one(name)
def _resolve_one(self, name):
"""Resolve references in one definition, recursively"""
# First check for unknown macros and recursive calls
if not self.items.has_key(name):
print "Undefined macro:", name
return ['<<%s>>'%name]
if self.resolving.has_key(name):
print "Recursive macro:", name
return ['<<%s>>'%name]
# Then check that we haven't handled this one before
if self.resolved.has_key(name):
return self.items[name]
# No rest for the wicked: we have work to do.
self.resolving[name] = 1
result = []
for lineno, line in self.items[name]:
mo = USEDEFINITION.search(line)
if mo:
# We replace the complete line. Is this correct?
macro = mo.group('name')
replacement = self._resolve_one(macro)
result = result + replacement
else:
result.append((lineno, line))
self.items[name] = result
self.resolved[name] = 1
del self.resolving[name]
return result
def save(self, dir, pattern):
"""Save macros that match pattern to folder dir"""
# Compile the pattern, if needed
if type(pattern) == type(''):
pattern = re.compile(pattern)
# If the directory is relative it is relative to the sourcefile
if not os.path.isabs(dir):
sourcedir = os.path.split(self.filename)[0]
dir = os.path.join(sourcedir, dir)
for name in self.items.keys():
if pattern.search(name):
pathname = os.path.join(dir, name)
data = self._addlinedirectives(self.items[name])
self._dosave(pathname, data)
def _addlinedirectives(self, data):
curlineno = -100
rv = []
for lineno, line in data:
curlineno = curlineno + 1
if self.genlinedirectives and line and line != '\n' and lineno != curlineno:
rv.append(self._linedirective(lineno))
curlineno = lineno
rv.append(line)
return rv
def _dosave(self, pathname, data):
"""Save data to pathname, unless it is identical to what is there"""
if os.path.exists(pathname):
olddata = open(pathname).readlines()
if olddata == data:
return
macostools.mkdirs(os.path.split(pathname)[0])
fp = open(pathname, "w").writelines(data)
def process(file, config):
pr = Processor(file, config)
pr.read()
pr.resolve()
for pattern, folder in config['config']:
pr.save(folder, pattern)
def readconfig():
"""Read a configuration file, if it doesn't exist create it."""
configname = sys.argv[0] + '.config'
if not os.path.exists(configname):
confstr = DEFAULT_CONFIG
open(configname, "w").write(confstr)
print "Created config file", configname
## print "Please check and adapt (if needed)"
## sys.exit(0)
namespace = {}
execfile(configname, namespace)
return namespace
def main():
config = readconfig()
if len(sys.argv) > 1:
for file in sys.argv[1:]:
if file[-3:] == '.nw':
print "Processing", file
process(file, config)
else:
print "Skipping", file
else:
fss, ok = macfs.PromptGetFile("Select .nw source file", "TEXT")
if not ok:
sys.exit(0)
process(fss.as_pathname(), config)
if __name__ == "__main__":
main()
|
