Re: [Configobj-develop] multiple files

[Vincent Fu <vf...@fu...>]

Lars, this works great. Thank you very much.

Vincent

On 09/04/2013 10:49 AM, Lars Lohn wrote:
> I used this solution for the same problem in some of my work at Mozilla:
>
>
> import re
>
>
> class ConfigObjWithIncludes(configobj.ConfigObj):
>      """This derived class is an extention to ConfigObj that adds nested
>      includes to ini files.  Here's an example:
>
>      db.ini:
>
>          dbhostname=myserver
>          dbname=some_database
>          dbuser=dwight
>          dbpassword=secrets
>
>      app.ini:
>          [source]
>          +include ./db.ini
>
>          [destination]
>          +include ./db.ini
>
>      when the 'app.ini' file is loaded, ConfigObj will respond as if the file
>      had been written like this:
>          [source]
>          dbhostname=myserver
>          dbname=some_database
>          dbuser=dwight
>          dbpassword=secrets
>
>          [destination]
>          dbhostname=myserver
>          dbname=some_database
>          dbuser=dwight
>          dbpassword=secrets
>      """
>      _include_re = re.compile(r'^(\s*)\+include\s+(.*?)\s*$')
>
>      def _expand_files(self, file_name, original_path, indent=""):
>          """This recursive function accepts a file name, opens the file and then
>          spools the contents of the file into a list, examining each line as it
>          does so.  If it detects a line beginning with "+include", it assumes
>          the string immediately following is a file name.  Recursing, the file
>          new file is opened and its contents are spooled into the accumulating
>          list."""
>          expanded_file_contents = []
>          with open(file_name) as f:
>              for a_line in f:
>                  match = ConfigObjWithIncludes._include_re.match(a_line)
>                  if match:
>                      include_file = match.group(2)
>                      if include_file.startswith('.'):
>                          include_file = os.path.join(
>                            original_path,
>                            include_file
>                          )
>                      new_lines = self._expand_files(include_file, os.path.dirname(include_file),
>                                                     indent + match.group(1))
>                      expanded_file_contents.extend(new_lines)
>                  else:
>                      expanded_file_contents.append(indent + a_line.rstrip())
>          return expanded_file_contents
>
>      def _load(self, infile, configspec):
>          """this overrides the original ConfigObj method of the same name.  It
>          runs through the input file collecting lines into a list.  When
>          completed, this method submits the list of lines to the super class'
>          function of the same name.  ConfigObj proceeds, completely unaware
>          that it's input file has been preprocessed."""
>          if isinstance(infile, basestring):
>              original_path = os.path.dirname(infile)
>              expanded_file_contents = self._expand_files(infile, original_path)
>              super(ConfigObjWithIncludes, self)._load(
>                expanded_file_contents,
>                configspec
>              )
>          else:
>              super(ConfigObjWithIncludes, self)._load(infile, configspec)
>
>
>
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