pmbootstrap-meow/pmb/parse/_apkbuild.py
Oliver Smith 933c4d0f0d new action: 'pmbootstrap repo_missing'
Add a new action that lists all aports, for which no binary packages
exist. Only list packages that can be built for the relevant arch
(specified with --arch). This works recursively: when a package can be
built for a certain arch, but one of its dependencies
(or their depends) can not be built for that arch, then don't list it.

This action will be used for the new sr.ht based build infrastructure,
to figure out which packages need to be built ahead of time (so we can
trigger each of them as single build job). Determining the order of the
packages to be built is not determined with pmbootstrap, the serverside
code of build.postmarketos.org takes care of that.

For testing purposes, a single package can also be specified and the
action will list if it can be built for that arch with its
dependencies, and what needs to be built exactly.

Add pmb/helpers/package.py to hold functions that work on both pmaports
and (binary package) repos - in contrary to the existing
pmb/helpers/pmaports.py (see previous commit) and pmb/helpers/repo.py,
which only work with one of those.

Refactoring:
* pmb/helpers/pmaports.py: add a get_list() function, which lists all
  aports and use it instead of writing the same glob loop over and over
* add pmb.helpers.pmaports.get(), which finds an APKBUILD and parses it
  in one step.
* rename pmb.build._package.check_arch to ...check_arch_abort to
  distinguish it from the other check_arch function
2018-12-01 21:30:59 +00:00

248 lines
8.8 KiB
Python

"""
Copyright 2018 Oliver Smith
This file is part of pmbootstrap.
pmbootstrap 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 3 of the License, or
(at your option) any later version.
pmbootstrap 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 pmbootstrap. If not, see <http://www.gnu.org/licenses/>.
"""
import os
import logging
import pmb.config
import pmb.parse.version
def replace_variables(apkbuild):
"""
Replace a hardcoded list of variables inside the APKBUILD.
"""
ret = apkbuild
# _flavor: ${_device} (lineageos kernel packages)
ret["_flavor"] = ret["_flavor"].replace("${_device}",
ret["_device"])
# pkgname: $_flavor
ret["pkgname"] = ret["pkgname"].replace("${_flavor}", ret["_flavor"])
# subpackages, *depends*: $pkgname
for key in ["subpackages", "depends", "makedepends", "makedepends_host",
"makedepends_build"]:
replaced = []
for subpackage in ret[key]:
replaced.append(subpackage.replace("$pkgname", ret["pkgname"]))
ret[key] = replaced
# makedepends: $makedepends_host, $makedepends_build, $_llvmver
replaced = []
for makedepend in ret["makedepends"]:
if makedepend.startswith("$"):
key = makedepend[1:]
if key in ret:
replaced += ret[key]
else:
raise RuntimeError("Could not resolve variable " +
makedepend + " in APKBUILD of " +
apkbuild["pkgname"])
else:
# replace in the middle of the string
for var in ["_llvmver"]:
makedepend = makedepend.replace("$" + var, ret[var])
replaced += [makedepend]
# Python: ${pkgname#py-}
if ret["pkgname"].startswith("py-"):
replacement = ret["pkgname"][3:]
for var in ["depends", "makedepends", "subpackages"]:
for i in range(len(ret[var])):
ret[var][i] = ret[var][i].replace(
"${pkgname#py-}", replacement)
ret["makedepends"] = replaced
return ret
def cut_off_function_names(apkbuild):
"""
For subpackages: only keep the subpackage name, without the internal
function name, that tells how to build the subpackage.
"""
sub = apkbuild["subpackages"]
for i in range(len(sub)):
sub[i] = sub[i].split(":", 1)[0]
apkbuild["subpackages"] = sub
return apkbuild
def apkbuild(args, path, check_pkgver=True, check_pkgname=True):
"""
Parse relevant information out of the APKBUILD file. This is not meant
to be perfect and catch every edge case (for that, a full shell parser
would be necessary!). Instead, it should just work with the use-cases
covered by pmbootstrap and not take too long.
Run 'pmbootstrap apkbuild_parse hello-world' for a full output example.
:param path: full path to the APKBUILD
:param check_pkgver: verify that the pkgver is valid.
:param check_pkgname: the pkgname must match the name of the aport folder
:returns: relevant variables from the APKBUILD. Arrays get returned as
arrays.
"""
# Try to get a cached result first (we assume, that the aports don't change
# in one pmbootstrap call)
if path in args.cache["apkbuild"]:
return args.cache["apkbuild"][path]
# Read the file and check line endings
with open(path, encoding="utf-8") as handle:
lines = handle.readlines()
if handle.newlines != '\n':
raise RuntimeError("Wrong line endings in APKBUILD: " + path)
# Parse all attributes from the config
ret = {}
for i in range(len(lines)):
for attribute, options in pmb.config.apkbuild_attributes.items():
if not lines[i].startswith(attribute + "="):
continue
# Extend the line value until we reach the ending quote sign
line_value = lines[i][len(attribute + "="):-1]
end_char = None
if line_value.startswith("\""):
end_char = "\""
value = ""
first_line = i
while i < len(lines) - 1:
value += line_value.replace("\"", "").strip()
if not end_char:
break
elif line_value.endswith(end_char):
# This check is needed to allow line break directly after opening quote
if i != first_line or line_value.count(end_char) > 1:
break
value += " "
i += 1
line_value = lines[i][:-1]
# Split up arrays, delete empty strings inside the list
if options["array"]:
if value:
value = list(filter(None, value.split(" ")))
else:
value = []
ret[attribute] = value
# Add missing keys
for attribute, options in pmb.config.apkbuild_attributes.items():
if attribute not in ret:
if options["array"]:
ret[attribute] = []
else:
ret[attribute] = ""
# Properly format values
ret = replace_variables(ret)
ret = cut_off_function_names(ret)
# Sanity check: pkgname
suffix = "/" + ret["pkgname"] + "/APKBUILD"
if check_pkgname:
if not os.path.realpath(path).endswith(suffix):
logging.info("Folder: '" + os.path.dirname(path) + "'")
logging.info("Pkgname: '" + ret["pkgname"] + "'")
raise RuntimeError("The pkgname must be equal to the name of"
" the folder, that contains the APKBUILD!")
# Sanity check: arch
if not len(ret["arch"]):
raise RuntimeError("Arch must not be empty: " + path)
# Sanity check: pkgver
if check_pkgver:
if "-r" in ret["pkgver"] or not pmb.parse.version.validate(ret["pkgver"]):
logging.info("NOTE: Valid pkgvers are described here:")
logging.info("<https://wiki.alpinelinux.org/wiki/APKBUILD_Reference#pkgver>")
raise RuntimeError("Invalid pkgver '" + ret["pkgver"] +
"' in APKBUILD: " + path)
# Fill cache
args.cache["apkbuild"][path] = ret
return ret
def subpkgdesc(path, function):
"""
Get the pkgdesc of a subpackage in an APKBUILD.
:param path: to the APKBUILD file
:param function: name of the subpackage (e.g. "nonfree_userland")
:returns: the subpackage's pkgdesc
"""
# Read all lines
with open(path, encoding="utf-8") as handle:
lines = handle.readlines()
# Prefixes
prefix_function = function + "() {"
prefix_pkgdesc = "\tpkgdesc=\""
# Find the pkgdesc
in_function = False
for line in lines:
if in_function:
if line.startswith(prefix_pkgdesc):
return line[len(prefix_pkgdesc):-2]
elif line.startswith(prefix_function):
in_function = True
# Failure
if not in_function:
raise RuntimeError("Could not find subpackage function, no line starts"
" with '" + prefix_function + "' in " + path)
raise RuntimeError("Could not find pkgdesc of subpackage function '" +
function + "' (spaces used instead of tabs?) in " +
path)
def kernels(args, device):
"""
Get the possible kernels from a device-* APKBUILD.
:param device: the device name, e.g. "lg-mako"
:returns: None when the kernel is hardcoded in depends
:returns: kernel types and their description (as read from the subpackages)
possible types: "downstream", "stable", "mainline"
example: {"mainline": "Mainline description",
"downstream": "Downstream description"}
"""
# Read the APKBUILD
apkbuild_path = args.aports + "/device/device-" + device + "/APKBUILD"
if not os.path.exists(apkbuild_path):
return None
subpackages = apkbuild(args, apkbuild_path)["subpackages"]
# Read kernels from subpackages
ret = {}
subpackage_prefix = "device-" + device + "-kernel-"
for subpackage in subpackages:
if not subpackage.startswith(subpackage_prefix):
continue
name = subpackage[len(subpackage_prefix):]
func = "kernel_" + name
desc = pmb.parse._apkbuild.subpkgdesc(apkbuild_path, func)
ret[name] = desc
# Return
if ret:
return ret
return None