777cb35eb8
For example graphviz has chained symlinked manpages: dot2gxl.1 is a symlink to gv2gxl.1 which is a symlink to gxl2gv.1 The second loop replaces each non-compressed symlink to a compressed symlink. The target is determined with 'readlink -f', which follows links recursively until the first name that is not a link (so either the 'target name' or the first 'dangling' symlink). This means that if the loop converted dot2gxl.1 before converting gv2gxl.1 it would add a symlink `dot2gxl.1.gz->gxl2gv.1.gz`. When it converted gv2gxl.1 first, it would then add a `dot2gxl.1.gz->gv2gxl.1.gz` symlink. Both are 'correct', but it's weird the result depends on the order in which 'find' returns the files. This PR makes the behaviour deterministic. fixes #104708
33 lines
966 B
Bash
33 lines
966 B
Bash
fixupOutputHooks+=('if [ -z "${dontGzipMan-}" ]; then compressManPages "$prefix"; fi')
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compressManPages() {
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local dir="$1"
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if [ -L "$dir"/share ] || [ -L "$dir"/share/man ] || [ ! -d "$dir/share/man" ]
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then return
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fi
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echo "gzipping man pages under $dir/share/man/"
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# Compress all uncompressed manpages. Don't follow symlinks, etc.
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find "$dir"/share/man/ -type f -a '!' -regex '.*\.\(bz2\|gz\)$' -print0 \
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| while IFS= read -r -d $'\0' f
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do
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if gzip -c -n "$f" > "$f".gz; then
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rm "$f"
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else
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rm "$f".gz
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fi
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done
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# Point symlinks to compressed manpages.
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find "$dir"/share/man/ -type l -a '!' -regex '.*\.\(bz2\|gz\)$' -print0 \
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| sort -z \
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| while IFS= read -r -d $'\0' f
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do
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local target
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target="$(readlink -f "$f")"
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if [ -f "$target".gz ]; then
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ln -sf "$target".gz "$f".gz && rm "$f"
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fi
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done
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}
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