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#!/usr/bin/python
# Utility functions from the dak suite
# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 James Troup <james@nocrew.org>
################################################################################
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
################################################################################
import os
import pwd
import re
import sys
import tempfile
################################################################################
re_single_line_field = re.compile(r"^(\S*)\s*:\s*(.*)")
re_multi_line_field = re.compile(r"^\s(.*)")
re_no_epoch = re.compile(r"^\d+\:")
re_extract_src_version = re.compile(r"(\S+)\s*\((.*)\)")
################################################################################
def fubar(msg, exit_code=1):
sys.stderr.write("E: %s\n" % (msg))
sys.exit(exit_code)
def warn(msg):
sys.stderr.write("W: %s\n" % (msg))
################################################################################
def prefix_multi_line_string(str, prefix, include_blank_lines=0):
out = ""
for line in str.split('\n'):
line = line.strip()
if line or include_blank_lines:
out += "%s%s\n" % (prefix, line)
# Strip trailing new line
if out:
out = out[:-1]
return out
################################################################################
# Split command line arguments which can be separated by either commas
# or whitespace. If dwim is set, it will complain about string ending
# in comma since this usually means someone did 'madison -a i386, m68k
# foo' or something and the inevitable confusion resulting from 'm68k'
# being treated as an argument is undesirable.
def split_args (s, dwim=1):
if not s:
return []
if s.find(",") == -1:
return s.split();
else:
if s[-1:] == "," and dwim:
fubar("split_args: found trailing comma, spurious space maybe?");
return s.split(",");
################################################################################
def extract_component_from_section(section):
component = "";
if section.find('/') != -1:
component = section.split('/')[0];
# XXX James Troup 2006-01-30:
# We don't have Cnf, don't want to use DB particularly, so...
valid_components = [ "main", "restricted", "universe", "multiverse", "contrib", "non-free" ]
# Expand default component
if component == "":
if section in valid_components:
component = section;
else:
component = "main";
return (section, component);
################################################################################
def Dict(**dict): return dict
################################################################################
def our_raw_input(prompt=""):
if prompt:
sys.stdout.write(prompt);
sys.stdout.flush();
try:
ret = raw_input();
return ret;
except EOFError:
sys.stderr.write("\nUser interrupt (^D).\n");
raise SystemExit;
################################################################################
def temp_filename(directory=None, dotprefix=None, perms=0700):
"""Return a secure and unique filename by pre-creating it.
If 'directory' is non-null, it will be the directory the file is pre-created in.
If 'dotprefix' is non-null, the filename will be prefixed with a '.'."""
if directory:
old_tempdir = tempfile.tempdir;
tempfile.tempdir = directory;
filename = tempfile.mktemp();
if dotprefix:
filename = "%s/.%s" % (os.path.dirname(filename), os.path.basename(filename));
fd = os.open(filename, os.O_RDWR|os.O_CREAT|os.O_EXCL, perms);
os.close(fd);
if directory:
tempfile.tempdir = old_tempdir;
return filename;
################################################################################
def pp_deps (deps):
pp_deps = [];
for atom in deps:
(pkg, version, constraint) = atom;
if constraint:
pp_dep = "%s (%s %s)" % (pkg, constraint, version);
else:
pp_dep = pkg;
pp_deps.append(pp_dep);
return " |".join(pp_deps);
################################################################################
# Returns the user name with a laughable attempt at rfc822 conformancy
# (read: removing stray periods).
def whoami ():
return pwd.getpwuid(os.getuid())[4].split(',')[0].replace('.', '');
################################################################################
def join_with_commas_and(list):
if len(list) == 0: return "nothing";
if len(list) == 1: return list[0];
return ", ".join(list[:-1]) + " and " + list[-1];
################################################################################
# Function for use in sorting lists of architectures.
# Sorts normally except that 'source' dominates all others.
def arch_compare_sw (a, b):
if a == "source" and b == "source":
return 0;
elif a == "source":
return -1;
elif b == "source":
return 1;
return cmp (a, b);
################################################################################
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