psencoding.rc

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

#!/bin/rc
# Trivial script for checking and setting the default PostScript font
# encoding. Changing the default assumes you can write in $POSTLIB.
# Available font encodings are files in $POSTLIB that end in .enc.
# The default is $POSTLIB/Default.enc.
#

POSTLIB=/sys/lib/postscript/prologues
DEFAULT=Default.enc
CURRENTDEFAULT=Standard

if (~ $#* 0) {
	cd $POSTLIB
	for (i in *.enc) {
		if (test -f $i -a $i '!=' $DEFAULT) {
			NAME=`{echo $i | sed s/\\.enc//}
			if (cmp $i $DEFAULT >/dev/null >[2]/dev/null) {
				CURRENTDEFAULT=$NAME
			}
			echo $NAME
		}
	}
	echo Standard
	echo Default'='$CURRENTDEFAULT
}
if not {
	switch ($1) {
	case Default
		;
	case Standard
		rm -f $POSTLIB/$DEFAULT
	case *
		if (test -f $POSTLIB/$1.enc) {
			rm -f $POSTLIB/$DEFAULT
			cp $POSTLIB/$1.enc $POSTLIB/$DEFAULT
		}
		if not echo unrecognized encoding name $1 >[1=2]
	}
}