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#!/bin/bash
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# Usage:
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# ./otp-get-patches.sh /path/to/otp OTP_R14B02 fedora-R14B02
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#
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# otp-get-patches.sh - update erlang.spec and otp-00*.patch files
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#
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# otp-get-patches.sh updates the erlang.spec and otp-00*.patch
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# files in the git index. After an otp-get-patches.sh run, you
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Hans Ulrich Niedermann |
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# will need to review the staged git changes, possibly adapt the
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Hans Ulrich Niedermann |
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# 'Release:' and '%changelog' parts of erlang.spec, and can then
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# "git commit" everything.
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#
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# Caution: Leave the four special comment lines untouched in the
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# spec file, as otp-get-patches.sh requires them and will only
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Hans Ulrich Niedermann |
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# touch the parts of erlang.spec between the respective start/end
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Hans Ulrich Niedermann |
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# comment pair:
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#
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# # start of autogenerated patch tag list
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# # end of autogenerated patch tag list
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# Command line parsing
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otp_dir="${1:?'Fatal: otp git repo dir required'}"
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otp_upstream="${2:?'Fatal: git ref to upstream release required'}"
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otp_fedora="${3:?'Fatal: git ref to branch with fedora patches required'}"
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# Setup
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set -e
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# set -x
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tmpdir="$(mktemp -d --tmpdir="$PWD")"
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# Generate patch files
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pushd "$otp_dir"
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git format-patch -N --no-signature --no-stat -o "$tmpdir" "${otp_upstream}..${otp_fedora}" > "$tmpdir/patch-list.txt"
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popd
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test -s "$tmpdir/patch-list.txt"
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# Process patch files
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echo "# start of autogenerated patch tag list" > "$tmpdir/patch-list-tags.txt"
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n=1
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while read patch
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do
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otppatch="$(dirname "$patch")/otp-$(basename "$patch")"
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${SED-sed} -e '1d' -e '/^-- $/,$d' "$patch" > "$otppatch"
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rm -f "$patch"
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echo "Patch$n: $(basename "$otppatch")" >> "$tmpdir/patch-list-tags.txt"
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n=$(($n + 1))
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done < "$tmpdir/patch-list.txt"
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echo "# end of autogenerated patch tag list" >> "$tmpdir/patch-list-tags.txt"
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# Create updated spec file
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specfile="erlang.spec"
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newspec1="${tmpdir}/${specfile}.new1"
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sed '/^# start of autogenerated patch tag list$/,$d' "$specfile" > "$newspec1"
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cat "$tmpdir/patch-list-tags.txt" >> "$newspec1"
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sed '1,/^# end of autogenerated patch tag list/d' "$specfile" >> "$newspec1"
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# Actually put all changes into git index
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git rm -f otp-00*.patch
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mv "$tmpdir/otp-00"*.patch .
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git add otp-00*.patch
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mv -f "$newspec1" "$specfile"
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git add "$specfile"
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rm -rf "$tmpdir"
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# End of file.
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