1 # Copyright (C) 2013-2014 CEA/DEN, EDF R&D, OPEN CASCADE
3 # This library is free software; you can redistribute it and/or
4 # modify it under the terms of the GNU Lesser General Public
5 # License as published by the Free Software Foundation; either
6 # version 2.1 of the License, or (at your option) any later version.
8 # This library is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 # Lesser General Public License for more details.
13 # You should have received a copy of the GNU Lesser General Public
14 # License along with this library; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
24 from io import StringIO
26 from salomeContextUtils import SalomeContextException
29 logConfigParser = logging.getLogger(__name__)
31 ADD_TO_PREFIX = 'ADD_TO_'
32 UNSET_KEYWORD = 'UNSET'
35 def _expandSystemVariables(key, val):
36 expandedVal = os.path.expandvars(val) # expand environment variables
37 # Search for not expanded variables (i.e. non-existing environment variables)
38 pattern = re.compile('\${ ( [^}]* ) }', re.VERBOSE) # string enclosed in ${ and }
39 expandedVal = pattern.sub(r'', expandedVal) # remove matching patterns
41 if not "DLIM8VAR" in key: # special case: DISTENE licence key can contain double clons (::)
42 expandedVal = _trimColons(expandedVal)
46 # :TRICKY: So ugly solution...
47 class MultiOptSafeConfigParser(ConfigParser.SafeConfigParser):
49 ConfigParser.SafeConfigParser.__init__(self)
51 # copied from python 2.6.8 Lib.ConfigParser.py
52 # modified (see code comments) to handle duplicate keys
53 def _read(self, fp, fpname):
54 """Parse a sectioned setup file.
56 The sections in setup file contains a title line at the top,
57 indicated by a name in square brackets (`[]'), plus key/value
58 options lines, indicated by `name: value' format lines.
59 Continuations are represented by an embedded newline then
60 leading whitespace. Blank lines, lines beginning with a '#',
61 and just about everything else are ignored.
63 cursect = None # None, or a dictionary
66 e = None # None, or an exception
72 # comment or blank line?
73 if line.strip() == '' or line[0] in '#;':
75 if line.split(None, 1)[0].lower() == 'rem' and line[0] in "rR":
76 # no leading whitespace
79 if line[0].isspace() and cursect is not None and optname:
82 cursect[optname].append(value)
83 # a section header or option header?
85 # is it a section header?
86 mo = self.SECTCRE.match(line)
88 sectname = mo.group('header')
89 if sectname in self._sections:
90 cursect = self._sections[sectname]
91 elif sectname == ConfigParser.DEFAULTSECT:
92 cursect = self._defaults
94 cursect = self._dict()
95 cursect['__name__'] = sectname
96 self._sections[sectname] = cursect
97 # So sections can't start with a continuation line
99 # no section header in the file?
100 elif cursect is None:
101 raise ConfigParser.MissingSectionHeaderError(fpname, lineno, line)
104 mo = self.OPTCRE.match(line)
106 optname, vi, optval = mo.group('option', 'vi', 'value')
107 optname = self.optionxform(optname.rstrip())
108 # This check is fine because the OPTCRE cannot
109 # match if it would set optval to None
110 if optval is not None:
111 if vi in ('=', ':') and ';' in optval:
112 # ';' is a comment delimiter only if it follows
113 # a spacing character
114 pos = optval.find(';')
115 if pos != -1 and optval[pos-1].isspace():
116 optval = optval[:pos]
117 optval = optval.strip()
119 splittedComments = optval.split('#')
120 s = _expandSystemVariables(optname, splittedComments[0])
121 optval = s.strip().strip("'").strip('"')
122 #if len(splittedComments) > 1:
123 # optval += " #" + " ".join(splittedComments[1:])
128 # REPLACE following line (original):
129 #cursect[optname] = [optval]
131 # Check if this optname already exists
132 if (optname in cursect) and (cursect[optname] is not None):
133 cursect[optname][0] += ','+optval
135 cursect[optname] = [optval]
138 # valueless option handling
139 cursect[optname] = optval
141 # a non-fatal parsing error occurred. set up the
142 # exception but keep going. the exception will be
143 # raised at the end of the file and will contain a
144 # list of all bogus lines
146 e = ConfigParser.ParsingError(fpname)
147 e.append(lineno, repr(line))
148 # if any parsing errors occurred, raise an exception
152 # join the multi-line values collected while reading
153 all_sections = [self._defaults]
154 all_sections.extend(self._sections.values())
155 for options in all_sections:
156 for name, val in options.items():
157 if isinstance(val, list):
158 options[name] = '\n'.join(val)
162 # Parse configuration file
163 # Input: filename, and a list of reserved keywords (environment variables)
164 # Output: a list of pairs (variable, value), and a dictionary associating a list of user-defined values to each reserved keywords
165 # Note: Does not support duplicate keys in a same section
166 def parseConfigFile(filename, reserved = []):
167 config = MultiOptSafeConfigParser()
168 config.optionxform = str # case sensitive
170 # :TODO: test file existence
174 config.read(filename)
175 except ConfigParser.MissingSectionHeaderError:
176 logConfigParser.error("No section found in file: %s"%(filename))
180 return __processConfigFile(config, reserved, filename)
181 except ConfigParser.InterpolationMissingOptionError, e:
182 msg = "A variable may be undefined in SALOME context file: %s\nParser error is: %s\n"%(filename, e)
183 raise SalomeContextException(msg)
186 def __processConfigFile(config, reserved = [], filename="UNKNOWN FILENAME"):
187 # :TODO: may detect duplicated variables in the same section (raise a warning)
188 # or even duplicate sections
192 # Get raw items for each section, and make some processing for environment variables management
193 reservedKeys = [ADD_TO_PREFIX+str(x) for x in reserved] # produce [ 'ADD_TO_reserved_1', 'ADD_TO_reserved_2', ..., ADD_TO_reserved_n ]
194 reservedValues = dict([str(i),[]] for i in reserved) # create a dictionary in which keys are the 'ADD_TO_reserved_i' and associated values are empty lists: { 'reserved_1':[], 'reserved_2':[], ..., reserved_n:[] }
195 sections = config.sections()
196 for section in sections:
197 entries = config.items(section, raw=False) # use interpolation
198 if len(entries) == 0: # empty section
199 logConfigParser.warning("Empty section: %s in file: %s"%(section, filename))
201 for key,val in entries:
203 logConfigParser.error("Invalid use of reserved variable: %s in file: %s"%(key, filename))
204 elif key == UNSET_KEYWORD:
205 unsetVariables += val.replace(',', ' ').split()
207 expandedVal = _expandSystemVariables(key, val)
209 if key in reservedKeys:
210 shortKey = key[len(ADD_TO_PREFIX):]
211 vals = expandedVal.split(',')
212 reservedValues[shortKey] += vals
213 # remove left&right spaces on each element
214 vals = [v.strip(' \t\n\r') for v in vals]
216 outputVariables.append((key, expandedVal))
219 pass # end for key,val
220 pass # end for section
222 # remove duplicate values
224 for (var, values) in outputVariables:
225 vals = values.split(',')
226 vals = list(set(vals))
227 outVars.append((var, ','.join(vals)))
229 return unsetVariables, outVars, reservedValues
232 def _trimColons(var):
234 # Remove leading and trailing colons (:)
235 pattern = re.compile('^:+ | :+$', re.VERBOSE)
236 v = pattern.sub(r'', v) # remove matching patterns
237 # Remove multiple colons
238 pattern = re.compile('::+', re.VERBOSE)
239 v = pattern.sub(r':', v) # remove matching patterns
243 # This class is used to parse .sh environment file
244 # It deals with specific treatments:
245 # - virtually add a section to configuration file
246 # - process shell keywords (if, then...)
247 class EnvFileConverter(object):
248 def __init__(self, fp, section_name, reserved = [], outputFile=None):
250 self.sechead = '[' + section_name + ']\n'
251 self.reserved = reserved
252 self.outputFile = outputFile
253 self.allParsedVariableNames=[]
254 # exclude line that begin with:
255 self.exclude = [ 'if', 'then', 'else', 'fi', '#', 'echo', 'exit' ]
256 self.exclude.append('$gconfTool') # QUICK FIX :TODO: provide method to extend this variable
257 # discard the following keywords if at the beginning of line:
258 self.discard = [ 'export' ]
259 # the following keywords imply a special processing if at the beginning of line:
260 self.special = [ 'unset' ]
265 if self.outputFile is not None:
266 self.outputFile.write(self.sechead)
271 line = self.fp.readline()
273 line = line.strip(' \t\n\r')
274 # line of interest? (not beginning by a keyword of self.exclude)
275 for k in self.exclude:
276 if line.startswith(k):
278 # look for substrinsg beginning with sharp charcter ('#')
279 line = re.sub(r'#.*$', r'', line)
280 # line to be pre-processed? (beginning by a keyword of self.special)
281 for k in self.special:
282 if k == "unset" and line.startswith(k):
284 line = line.strip(' \t\n\r')
285 line = UNSET_KEYWORD + ": " + line
286 # line to be pre-processed? (beginning by a keyword of self.discard)
287 for k in self.discard:
288 if line.startswith(k):
290 line = line.strip(' \t\n\r')
291 # process reserved keywords
292 for k in self.reserved:
293 if line.startswith(k) and "=" in line:
294 variable, value = line.split('=')
295 value = self._purgeValue(value, k)
296 line = ADD_TO_PREFIX + k + ": " + value
297 # Update list of variable names
298 # :TODO: define excludeBlock variable (similar to exclude) and provide method to extend it
299 if "cleandup()" in line:
300 print "WARNING: parseConfigFile.py: skip cleandup and look for '# PRODUCT environment'"
302 line = self.fp.readline()
303 if "# PRODUCT environment" in line:
304 print "WARNING: parseConfigFile.py: '# PRODUCT environment' found"
306 while "clean " in line[0:6]: #skip clean calls with ending ";" crash
307 line = self.fp.readline()
308 # Extract variable=value
311 variable, value = line.split('=')
312 except: #avoid error for complicated sh line xx=`...=...`, but warning
313 print "WARNING: parseConfigFile.py: line with multiples '=' character are hazardous: '"+line+"'"
314 variable, value = line.split('=',1)
317 # Self-extending variables that are not in reserved keywords
318 # Example: FOO=something:${FOO}
319 # In this case, remove the ${FOO} in value
320 if variable in value:
321 value = self._purgeValue(value, variable)
322 line = "%s=%s"%(variable,value)
324 self.allParsedVariableNames.append(variable)
331 # replace "${FOO}" and "$FOO" and ${FOO} and $FOO by %(FOO)s if FOO is
332 # defined in current file (i.e. it is not an external environment variable)
333 for k in self.allParsedVariableNames:
334 key = r'\$\{?'+k+'\}?'
335 pattern = re.compile(key, re.VERBOSE)
336 line = pattern.sub(r'%('+k+')s', line)
337 # Remove quotes (if line does not contain whitespaces)
339 variable, value = line.split('=', 1)
341 variable, value = line.split(':', 1)
342 if not ' ' in value.strip():
343 pattern = re.compile(r'\"', re.VERBOSE)
344 line = pattern.sub(r'', line)
347 # Replace `shell_command` by its result
349 obj = re.sub('`', r'', obj.group(0)) # remove quotes
351 res = subprocess.Popen(obj, stdout=subprocess.PIPE).communicate()[0]
352 res = res.strip(' \t\n\r') # trim whitespaces
355 line = re.sub('`[^`]+`', myrep, line)
357 if self.outputFile is not None:
358 self.outputFile.write(line+'\n')
361 def _purgeValue(self, value, name):
362 # Replace foo:${PATTERN}:bar or foo:$PATTERN:bar by foo:bar
363 key = r'\$\{?'+name+'\}?'
364 pattern = re.compile(key, re.VERBOSE)
365 value = pattern.sub(r'', value)
368 value = _trimColons(value)
373 # Convert .sh environment file to configuration file format
374 def convertEnvFileToConfigFile(envFilename, configFilename, reserved=[]):
375 logConfigParser.debug('convert env file %s to %s'%(envFilename, configFilename))
376 fileContents = open(envFilename, 'r').read()
378 pattern = re.compile('\n[\n]+', re.VERBOSE) # multiple '\n'
379 fileContents = pattern.sub(r'\n', fileContents) # replace by a single '\n'
381 finput = StringIO(unicode(fileContents))
382 foutput = open(configFilename, 'w')
384 config = MultiOptSafeConfigParser()
385 config.optionxform = str # case sensitive
386 config.readfp(EnvFileConverter(finput, 'SALOME Configuration', reserved, outputFile=foutput))
390 logConfigParser.info('Configuration file generated: %s'%configFilename)