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b9dcb2cbe5
Under certain circumstances (I did not find out the complete details, but it happens when running the tests), the filterdirs() function in cpio outputs CR/LF. Since tar does not like that, the command failed. So strip out all CRs when filtering the directories. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
54 lines
757 B
Bash
54 lines
757 B
Bash
#!/bin/sh
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#
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# Emulates some cpio behavior using GNU tar
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die() {
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echo >&2 "$@"
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exit 1
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}
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null=
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while test $# -gt 0; do
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case "$1" in
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-0) null=--null;;
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-o) mode=o;;
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-iuv) ;;
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-pumd|-pumdl)
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mode=p
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dir="$2"
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shift
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;;
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*) die "cpio emulation supports only -0, -o, -iuv, -pumdl";;
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esac
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shift
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done
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filterdirs() {
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while read f; do
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if test -d "$f"; then
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# list only empty directories
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if test -z "$(ls -A "$f")"; then
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echo "$f"
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fi
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else
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echo "$f"
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fi
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done
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}
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case $mode in
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o)
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tar --create --file=- $null --files-from=-
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;;
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p)
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test -z "$null" || die "cpio: cannot use -0 in pass-through mode"
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filterdirs |
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tr -d '\r' |
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tar --create --file=- --files-from=- |
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tar --extract --directory="$dir" --file=-
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;;
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*)
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tar xvf -
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esac
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