libpng16/rpm-macros.libpng-tools

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# macro: %png_fix path/to/name-of.png
# for given png, fixes 'IDAT: invalid distance too far back', etc.,
# see pngfix --help
#
# -q do not output if macro fixed something or find unrecoverable error
#
# this macro fails only if there is an unrecoverable error in the png
# -- pngfix returns nonzero and $png.fixed doesn't exist; run pngfix
# on that file, see return code and compare with pngfix --help output
%png_fix(q) \
if test "x%1" == "x%%1"; then \
echo "Missing argument in call to %%png_fix: path and name of png file." \
exit 1 \
fi \
/usr/bin/pngfix %{-q: -qq} --suffix='.fixed' "%1" || mv "%1.fixed" "%1" \
%nil
#
# macro: %png_fix_dir
# for given directory, search *.png (recursively) and potentionaly
# fix 'IDAT: invalid distance too far back', etc., see pngfix --help
#
# -q do not output if pngfix fixed something or find unrecoverable error
#
%png_fix_dir(q) \
if test "x%1" == "x%%1"; then \
echo "Missing argument in call to %%png_fix_dir: dir where to search png files." \
exit 1 \
fi \
for png in `find "%1" -iname '*.png'`; do \
# -q will be propagated \
%png_fix $png \
done \
%nil