pungi/pungi/compose_metadata/discinfo.py
2015-02-10 08:19:34 -05:00

98 lines
2.6 KiB
Python

# -*- coding: utf-8 -*-
# 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; version 2 of the License.
#
# 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 Library 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.
"""
The .discinfo file contains metadata about media.
Following fields are part of the .discinfo file,
one record per line:
- timestamp
- release
- architecture
- disc number (optional)
"""
__all__ = (
"read_discinfo",
"write_discinfo",
"write_media_repo",
)
import time
def write_discinfo(file_path, description, arch, disc_numbers=None, timestamp=None):
"""
Write a .discinfo file:
"""
disc_numbers = disc_numbers or ["ALL"]
if not isinstance(disc_numbers, list):
raise TypeError("Invalid type: disc_numbers type is %s; expected: <list>" % type(disc_numbers))
if not timestamp:
timestamp = "%f" % time.time()
f = open(file_path, "w")
f.write("%s\n" % timestamp)
f.write("%s\n" % description)
f.write("%s\n" % arch)
if disc_numbers:
f.write("%s\n" % ",".join([str(i) for i in disc_numbers]))
f.close()
return timestamp
def read_discinfo(file_path):
result = {}
f = open(file_path, "r")
result["timestamp"] = f.readline().strip()
result["description"] = f.readline().strip()
result["arch"] = f.readline().strip()
disc_numbers = f.readline().strip()
if not disc_numbers:
result["disc_numbers"] = None
elif disc_numbers == "ALL":
result["disc_numbers"] = ["ALL"]
else:
result["disc_numbers"] = [int(i) for i in disc_numbers.split(",")]
return result
def write_media_repo(file_path, description, timestamp=None):
"""
Write media.repo file for the disc to be used on installed system.
PackageKit uses this.
"""
if not timestamp:
raise
timestamp = "%f" % time.time()
data = [
"[InstallMedia]",
"name=%s" % description,
"mediaid=%s" % timestamp,
"metadata_expire=-1",
"gpgcheck=0",
"cost=500",
"",
]
repo_file = open(file_path, "w")
repo_file.write("\n".join(data))
repo_file.close()
return timestamp