mkxml.elems

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

echo \
'#include "stdinc.h"
#include "dat.h"
#include "fns.h"
#include "httpd.h"
#include "xml.h"
'

sed -n '/<struct/,/<\/struct>/{
	s/^[^<]+</</
	t cleart
:cleart
	s/<struct name="(.*)" type="(.*)">.*/void xml\1(Hio *hout, \2s, char *tag, int indent){\n	xmlIndent(hout, indent);\n	hprint(hout, "<%s>\\n", tag);/
	t start
	s/<field name="(.*)" val="(.*)" type="(.*)"\/>.*/	xml\3(hout, \2, "\1", indent + 1);/
	t field
	s/<array name="(.*)" val="(.*)" elems="(.*)" type="(.*)"\/>.*/	for(i = 0; i < \3; i++)\n		xml\4(hout, \2, "\1", indent + 1);/
	t array
	s/<\/struct>/	xmlIndent(hout, indent);\n	hprint(hout, "<\/%s>\\n", tag);\n}\n/
	t produce
}
b
:start
	h
	b
:field
	H
	b
:array
	H
	x
	s/{\n/&	int i;\n\n/
	s/^	int i;\n\n	int i;\n/	int i;\n/
	x
	b
:produce
	H
	g
	p
' $1