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Re-compress all Mame zip roms to 7z format

by

In advance,

trans_to_7z.sh

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#!/bin/bash
 
PARENTDIR=$1
TMPDIR=`pwd`/tmp
 
PATH="/d/cext/Program Files/7-Zip:$PATH"
 
ISERR="no"
 
if [ "x$1" = x ] ; then
	echo "Please input dir to transform."
	exit
fi
 
if [ -e "$TMPDIR" ] ; then
	echo "Please rmdir [$TMPDIR] first."
	exit
fi
 
get_win_path()
{
	local win_path="$1"
	win_path="${win_path#/}"
	win_path="${win_path//\//\\}"
	win_path="${win_path/\\/\:\\}"
	echo $win_path
}
 
format_transform()
{
	local file_7z=$1
	local file_zip=$2
	local tmp_dir=$TMPDIR
	mkdir "$tmp_dir"
 
	7z x ${file_7z} -o"`get_win_path \"$tmp_dir\"`"
	(
		cd "$tmp_dir"
		ls
 
		7z a -mx9 "`get_win_path \"${file_zip}\"`" || ( echo "Creating 7z file failed." && ISERR="yes" )
	)
 
	rm -Rf "$tmp_dir"
}
 
cd "$PARENTDIR"
 
for fn in `ls *.zip`; do
 
	echo "$fn"
 
	format_transform $fn "`pwd`/${fn%.zip}.7z"
 
	if [ $ISERR = "yes" ]; then
		exit
	fi
done
 
echo "Transforming done."

How to use?

Copy trans_to_7z.sh to Mame root folder which contains roms sub-directory, right click at blank place of this Mame root window in Explorer, select "Git Bash Here" which prompts bash console, input below and return,

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./trans_to_7z.sh roms

refer to:
https://www.cnblogs.com/wq242424/p/15564203.html