forked from Mirror/pmbootstrap
d63ea90f2b
Often I find myself confused and subsequently frustrated by the behaviour of --fork-alpine as usually I apply whatever changes I want to the aports package before forking. This is due to that in the proper aports repo I can leverage the full power of git and apply patches or revert commits, whereas after the package has been forked to pmaports the context git needs to do this is lost. To fix that, this commit introduces --fork-alpine-retain-branch which works the same way as --fork-alpine except it doesn't change the aports branch to match the current channel.
225 lines
8.3 KiB
Python
225 lines
8.3 KiB
Python
# Copyright 2023 Oliver Smith
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# SPDX-License-Identifier: GPL-3.0-or-later
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import fnmatch
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import logging
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import re
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import glob
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import pmb.helpers.git
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def indent_size(line):
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"""
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Number of spaces at the beginning of a string.
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"""
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matches = re.findall("^[ ]*", line)
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if len(matches) == 1:
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return len(matches[0])
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return 0
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def format_function(name, body, remove_indent=4):
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"""
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Format the body of a shell function passed to rewrite() below, so it fits
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the format of the original APKBUILD.
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:param remove_indent: Maximum number of spaces to remove from the
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beginning of each line of the function body.
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"""
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tab_width = 4
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ret = ""
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lines = body.split("\n")
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for i in range(len(lines)):
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line = lines[i]
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if not line.strip():
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if not ret or i == len(lines) - 1:
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continue
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# Remove indent
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spaces = min(indent_size(line), remove_indent)
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line = line[spaces:]
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# Convert spaces to tabs
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spaces = indent_size(line)
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tabs = int(spaces / tab_width)
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line = ("\t" * tabs) + line[spaces:]
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ret += line + "\n"
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return name + "() {\n" + ret + "}\n"
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def rewrite(args, pkgname, path_original="", fields={}, replace_pkgname=None,
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replace_functions={}, replace_simple={}, below_header="",
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remove_indent=4):
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"""
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Append a header to $WORK/aportgen/APKBUILD, delete maintainer/contributor
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lines (so they won't be bugged with issues regarding our generated aports),
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and add reference to the original aport.
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:param path_original: The original path of the automatically generated
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aport.
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:param fields: key-value pairs of fields that shall be changed in the
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APKBUILD. For example: {"pkgdesc": "my new package", "subpkgs": ""}
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:param replace_pkgname: When set, $pkgname gets replaced with that string
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in every line.
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:param replace_functions: Function names and new bodies, for example:
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{"build": "return 0"}
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The body can also be None (deletes the function)
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:param replace_simple: Lines that fnmatch the pattern, get
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replaced/deleted. Example: {"*test*": "# test", "*mv test.bin*": None}
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:param below_header: String that gets directly placed below the header.
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:param remove_indent: Number of spaces to remove from function body
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provided to replace_functions.
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"""
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# Header
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if path_original:
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lines_new = [
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"# Automatically generated aport, do not edit!\n",
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"# Generator: pmbootstrap aportgen " + pkgname + "\n",
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"# Based on: " + path_original + "\n",
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"\n",
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]
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else:
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lines_new = [
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"# Forked from Alpine INSERT-REASON-HERE (CHANGEME!)\n",
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"\n",
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]
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if below_header:
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for line in below_header.split("\n"):
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if not line[:8].strip():
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line = line[8:]
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lines_new += line.rstrip() + "\n"
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# Copy/modify lines, skip Maintainer/Contributor
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path = args.work + "/aportgen/APKBUILD"
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with open(path, "r+", encoding="utf-8") as handle:
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skip_in_func = False
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for line in handle.readlines():
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# Skip maintainer/contributor
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if line.startswith("# Maintainer") or line.startswith(
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"# Contributor"):
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continue
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# Replace functions
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if skip_in_func:
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if line.startswith("}"):
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skip_in_func = False
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continue
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else:
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for func, body in replace_functions.items():
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if line.startswith(func + "() {"):
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skip_in_func = True
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if body:
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lines_new += format_function(
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func, body, remove_indent=remove_indent)
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break
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if skip_in_func:
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continue
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# Replace fields
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for key, value in fields.items():
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if line.startswith(key + "="):
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if value:
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if key in ["pkgname", "pkgver", "pkgrel"]:
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# No quotes to avoid lint error
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line = f"{key}={value}\n"
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else:
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line = f'{key}="{value}"\n'
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else:
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# Remove line without value to avoid lint error
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line = ""
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break
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# Replace $pkgname
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if replace_pkgname and "$pkgname" in line:
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line = line.replace("$pkgname", replace_pkgname)
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# Replace simple
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for pattern, replacement in replace_simple.items():
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if fnmatch.fnmatch(line, pattern + "\n"):
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line = replacement
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if replacement:
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line += "\n"
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break
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if line is None:
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continue
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lines_new.append(line)
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# Write back
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handle.seek(0)
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handle.write("".join(lines_new))
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handle.truncate()
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def get_upstream_aport(args, pkgname, arch=None):
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"""
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Perform a git checkout of Alpine's aports and get the path to the aport.
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:param pkgname: package name
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:param arch: Alpine architecture (e.g. "armhf"), defaults to native arch
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:returns: absolute path on disk where the Alpine aport is checked out
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example: /opt/pmbootstrap_work/cache_git/aports/upstream/main/gcc
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"""
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# APKBUILD
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pmb.helpers.git.clone(args, "aports_upstream")
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aports_upstream_path = args.work + "/cache_git/aports_upstream"
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if hasattr(args, "fork_alpine_retain_branch") and args.fork_alpine_retain_branch:
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logging.info("Not changing aports branch as --fork-alpine-retain-branch was "
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"used.")
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else:
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# Checkout branch
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channel_cfg = pmb.config.pmaports.read_config_channel(args)
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branch = channel_cfg["branch_aports"]
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logging.info(f"Checkout aports.git branch: {branch}")
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if pmb.helpers.run.user(args, ["git", "checkout", branch],
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aports_upstream_path, check=False):
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logging.info("NOTE: run 'pmbootstrap pull' and try again")
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logging.info("NOTE: if it still fails, your aports.git was cloned with"
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" an older version of pmbootstrap, as shallow clone."
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" Unshallow it, or remove it and let pmbootstrap clone it"
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f" again: {aports_upstream_path}")
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raise RuntimeError("Branch checkout failed.")
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# Search package
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paths = glob.glob(aports_upstream_path + "/*/" + pkgname)
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if len(paths) > 1:
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raise RuntimeError("Package " + pkgname + " found in multiple"
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" aports subfolders.")
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elif len(paths) == 0:
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raise RuntimeError("Package " + pkgname + " not found in alpine"
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" aports repository.")
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aport_path = paths[0]
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# Parse APKBUILD
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apkbuild = pmb.parse.apkbuild(f"{aport_path}/APKBUILD",
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check_pkgname=False)
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apkbuild_version = apkbuild["pkgver"] + "-r" + apkbuild["pkgrel"]
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# Binary package
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split = aport_path.split("/")
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repo = split[-2]
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pkgname = split[-1]
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index_path = pmb.helpers.repo.alpine_apkindex_path(args, repo, arch)
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package = pmb.parse.apkindex.package(args, pkgname, indexes=[index_path])
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# Compare version (return when equal)
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compare = pmb.parse.version.compare(apkbuild_version, package["version"])
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# APKBUILD > binary: this is fine
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if compare == 1:
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logging.info(f"NOTE: {pkgname} {arch} binary package has a lower"
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f" version {package['version']} than the APKBUILD"
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f" {apkbuild_version}")
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return aport_path
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# APKBUILD < binary: aports.git is outdated
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if compare == -1:
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logging.warning("WARNING: Package '" + pkgname + "' has a lower version in"
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" local checkout of Alpine's aports (" + apkbuild_version +
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") compared to Alpine's binary package (" +
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package["version"] + ")!")
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logging.info("NOTE: You can update your local checkout with: 'pmbootstrap pull'")
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return aport_path
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