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#!/usr/bin/env bash
# Tool for converting between MXE patch files and git repos
# Imports and exports patch files in "git format-patch" format.
cmd=$1
pkg=$2
setupEnv() {
# MXE directory
export mxedir=$(cd $(dirname $0) && cd .. && pwd)
# directory for unpacked tarballs/git repos
export gitsdir=${mxedir}/gits
mkdir -p ${gitsdir}
# John Doe <John Doe@acme.org>
export author=`git var GIT_AUTHOR_IDENT | sed 's/^\(.* [<].*[>]\).*$/\1/'`
export pkg_version=`grep '^$(PKG)_VERSION' $mxedir/src/$pkg.mk | \
sed 's/.*:= \(.*\)/\1/'`
export pkg_short_version=`echo $pkg_version | sed s/'\(.*\)\.[^.]*$'/'\1'/`
export pkg_subdir=`grep '^$(PKG)_SUBDIR' $mxedir/src/$pkg.mk | \
sed 's/.*:= \(.*\)/\1/' | \
sed s/'$($(PKG)_VERSION)'/$pkg_version/ | \
sed s/'$(call SHORT_PKG_VERSION,$(PKG))'/$pkg_short_version/ | \
sed s/'$(PKG)'/$pkg/;`
export pkg_file=`grep '^$(PKG)_FILE' $mxedir/src/$pkg.mk | \
sed 's/.*:= \(.*\)/\1/' | \
sed s/'$($(PKG)_VERSION)'/$pkg_version/ | \
sed s/'$(call SHORT_PKG_VERSION,$(PKG))'/$pkg_short_version/ | \
sed s/'$($(PKG)_SUBDIR)'/$pkg_subdir/ | \
sed s/'$(PKG)'/$pkg/;`
#echo $pkg
#echo $pkg_version
#echo $pkg_subdir
#echo $pkg_file
}
# init
function init_git {
setupEnv
cd $gitsdir
if [ -d $gitsdir/$pkg_subdir ]; then
echo "Error: $gitsdir/$pkg_subdir already exists. Cancelling init." >&2
exit 1
fi
echo "Checking for cached $pkg_file"
if [ ! -f $mxedir/pkg/$pkg_file ]; then
make -C "$mxedir" download-$pkg
echo "Building the mxe Makefile target 'download-$pkg' to get missing file"
if [ ! $? -eq 0 ]; then
echo "Could not build target download-$pkg - cancelling init." >&2
exit 1
fi
fi
echo "Unpacking archive..."
echo $pkg_file | grep "\.tar\.gz" >> /dev/null && tar xf $mxedir/pkg/$pkg_file
echo $pkg_file | grep "\.tar\.bz2" >> /dev/null && tar xf $mxedir/pkg/$pkg_file
echo $pkg_file | grep "\.tar\.xz" >> /dev/null && xz -dc $mxedir/pkg/$pkg_file | tar xf -
echo $pkg_file | grep "\.zip" >> /dev/null && unzip $mxedir/pkg/$pkg_file >> /dev/null
echo "Initializing repo and adding all as first commit"
cd $gitsdir/$pkg_subdir && \
(git init; git add -A; git commit -m "init") > /dev/null
echo "Creating 'dist' tag for distribution tarball state"
git tag dist
echo "Repository ready in $gitsdir/$pkg_subdir"
}
function export_patch {
setupEnv
if [ ! -d $gitsdir/$pkg_subdir ]; then
echo "Error: $gitsdir/$pkg_subdir does not exist, so cannot export patches. Cancelling export." >&2
exit 1
fi
cd $gitsdir/$pkg_subdir && \
(
echo 'This file is part of MXE.'
echo 'See index.html for further information.'
echo ''
echo 'Contains ad hoc patches for cross building.'
echo ''
git format-patch -p --stdout dist..HEAD | \
sed 's/^From: .*/From: MXE/g;'
) > $mxedir/src/$pkg-1-fixes.patch && \
echo "Generated $mxedir/src/$pkg-1-fixes.patch"
}
function import_patch {
setupEnv
if [ ! -d $gitsdir/$pkg_subdir ]; then
echo "Error: $gitsdir/$pkg_subdir does not exist, so cannot import patches. Cancelling import - try 'init' first." >&2
exit 1
fi
if [ -f $mxedir/src/$pkg-1-fixes.patch ]; then
cd $gitsdir/$pkg_subdir && \
cat $mxedir/src/$pkg-1-fixes.patch | \
sed '/^From/,$ !d' | \
sed s/'^From: .*'/"From: $author"/'g;' | \
git am --keep-cr && \
echo "Imported $mxedir/src/$pkg-1-fixes.patch"
else
echo "patch-tool managed file $mxedir/src/$pkg-1-fixes.patch not found. Cancelling import." >&2
exit 1
fi
}
case "$cmd" in
init)
init_git $pkg
;;
import)
import_patch $pkg
;;
export)
export_patch $pkg
;;
*)
echo "Unrecognized command '${cmd}'" >&2
cat <<EOS
Usage: $0 COMMAND PACKAGENAME
where COMMAND is one of:
init - create a git directory for the package with the raw source
import - apply the "pkgname-1-fixes.patch" patch commits
export - create/replace the "pkgname-1-fixes.patch" patch with a patch of all commits since init.
EOS
exit 1
;;
esac
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