90 lines
2.5 KiB
Python
90 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Library General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <https://gnu.org/licenses/>.
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"""
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The .discinfo file contains metadata about media.
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Following fields are part of the .discinfo file,
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one record per line:
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- timestamp
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- release
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- architecture
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- disc number (optional)
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"""
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__all__ = (
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"read_discinfo",
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"write_discinfo",
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"write_media_repo",
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)
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import time
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def write_discinfo(file_path, description, arch, disc_numbers=None, timestamp=None):
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"""
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Write a .discinfo file:
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"""
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disc_numbers = disc_numbers or ["ALL"]
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if not isinstance(disc_numbers, list):
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raise TypeError("Invalid type: disc_numbers type is %s; expected: <list>" % type(disc_numbers))
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if not timestamp:
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timestamp = "%f" % time.time()
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with open(file_path, "w") as f:
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f.write("%s\n" % timestamp)
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f.write("%s\n" % description)
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f.write("%s\n" % arch)
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if disc_numbers:
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f.write("%s\n" % ",".join([str(i) for i in disc_numbers]))
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return timestamp
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def read_discinfo(file_path):
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result = {}
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with open(file_path, "r") as f:
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result["timestamp"] = f.readline().strip()
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result["description"] = f.readline().strip()
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result["arch"] = f.readline().strip()
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disc_numbers = f.readline().strip()
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if not disc_numbers:
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result["disc_numbers"] = None
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elif disc_numbers == "ALL":
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result["disc_numbers"] = ["ALL"]
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else:
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result["disc_numbers"] = [int(i) for i in disc_numbers.split(",")]
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return result
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def write_media_repo(file_path, description, timestamp):
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"""
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Write media.repo file for the disc to be used on installed system.
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PackageKit uses this.
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"""
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data = [
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"[InstallMedia]",
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"name=%s" % description,
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"mediaid=%s" % timestamp,
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"metadata_expire=-1",
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"gpgcheck=0",
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"cost=500",
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"",
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]
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with open(file_path, "w") as repo_file:
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repo_file.write("\n".join(data))
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return timestamp
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