mdw@git.distorted.org.uk Git - stgit/blob - stgit/utils.py

   1 """Common utility functions
   2 """
   3
   4 __copyright__ = """
   5 Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License version 2 as
   9 published by the Free Software Foundation.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 """
  20
  21 def read_string(filename, multiline = False):
  22     """Reads the first line from a file
  23     """
  24     f = file(filename, 'r')
  25     if multiline:
  26         string = f.read()
  27     else:
  28         string = f.readline().strip()
  29     f.close()
  30     return string
  31
  32 def write_string(filename, string, multiline = False):
  33     """Writes string to file and truncates it
  34     """
  35     f = file(filename, 'w+')
  36     if multiline:
  37         f.write(string)
  38     else:
  39         print >> f, string
  40     f.close()
  41
  42 def append_string(filename, string):
  43     """Appends string to file
  44     """
  45     f = file(filename, 'a+')
  46     print >> f, string
  47     f.close()
  48
  49 def insert_string(filename, string):
  50     """Inserts a string at the beginning of the file
  51     """
  52     f = file(filename, 'r+')
  53     lines = f.readlines()
  54     f.seek(0); f.truncate()
  55     print >> f, string
  56     f.writelines(lines)
  57     f.close()
  58
  59 def create_empty_file(name):
  60     """Creates an empty file
  61     """
  62     file(name, 'w+').close()