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#!/bin/sh
set -e
if [ $# -lt 1 ]; then
argv0=`basename $0`
echo "$argv0: Convert source code written for Xr to use Cairo instead." >&2
echo "" >&2
echo "Usage: $argv0 file [...]" >&2
exit 1
fi
xr2cairo() {
file=$1
backup=$file.xr
if [ -e $backup ]; then
echo "Warning: Backup file $backup already exists --- not backing up this time." >&2
else
cp $file $backup
fi
sed -e '
s/\(Xr[a-zA-Z]*\)RGB/\1Rgb/g
s/\(Xr[a-zA-Z]*\)NextTo/\1Similar/g
s/Xr\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)/\Lcairo_\1_\2_\3_\4_\5\E/g
s/Xr\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)/\Lcairo_\1_\2_\3_\4\E/g
s/Xr\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z]\+\)/\Lcairo_\1_\2_\3\E/g
s/Xr\([A-Z]\+[a-z]\+\)\([A-Z]\+[a-z0-9]\+\)/\Lcairo_\1_\2\E/g
s/Xr\([A-Z]\+[a-z]\+\)/\Lcairo_\1\E/g
s/\(cairo_\(operator\|status\|fill_rule\|line_cap\|line_join\|filter\|format\)_[a-z0-9_]\{2,\}\)/\U\1/g
s/cairo_\(fill_rule\|line_cap\|line_join\|format\|operator\|status\|filter\|surface\|matrix\)$/cairo_\1_t/g
s/cairo_\(fill_rule\|line_cap\|line_join\|format\|operator\|status\|filter\|surface\|matrix\)\([^_]\)/cairo_\1_t\2/g
s/_cairo_\(fill_rule\|line_cap\|line_join\|format\|operator\|status\|filter\|surface\|matrix\)_t/cairo_\1/g
s/cairo_state/cairo_t/g
s/_cairo_t\([^a-zA-Z0-9_]\)/cairo\1/g
s/Xr\.h/cairo.h/g
' $backup > $file
}
while [ $# -gt 0 ]; do
file=$1
shift
xr2cairo $file
done
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