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<span style="font-size: 10pt"><a href="/plan9/">Plan 9 from Bell Labs</a>&rsquo;s /usr/web/sources/contrib/maht/dechunk.c</span></p>
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Copyright © 2009 Alcatel-Lucent.<br />
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#include &lt;u.h&gt;
#include &lt;libc.h&gt;
#include &lt;bio.h&gt;


Biobuf stdin, stdout;
char* buf;
int linelen, chunked=0;
char* tec = "Transfer-Encoding: chunked\r\n";


char *
readline(void) {
	if(buf = Brdline(&amp;stdin, '\n'))
		return buf;

	exits("eof stdin");
}

void
read_plain(void) {
	while(buf = Brdline(&amp;stdin, '\n'))
		Bwrite(&amp;stdout, buf, Blinelen(&amp;stdin));
}

void
read_chunked(void) {
	long chunksize;
	void* rbuff;
	int bread;
	readline();
	buf[Blinelen(&amp;stdin) -2] = 0;
	chunksize = strtol(buf, 0, 16);
	rbuff = malloc(1024);
	do {
		while(chunksize &gt; 0) {
			bread = Bread(&amp;stdin, rbuff, 1024L &lt; chunksize ? 1024L : chunksize);
			if(bread &lt; 0)
				exits("EOF stdin");
			Bwrite(&amp;stdout, rbuff, bread);
			chunksize -= bread;
		}
		readline();
		readline();
		buf[Blinelen(&amp;stdin) -2] = 0;
		chunksize = strtol(buf, 0, 16);
	} while(chunksize &gt; 0);
	free(rbuff);
}

void
main(int argc, char *argv[])
{
	Binit(&amp;stdin, 0, OREAD);
	Binit(&amp;stdout, 1, OWRITE);
	
	while(readline()) {
		linelen = Blinelen(&amp;stdin);
		if(linelen == 2) // blank line
			break;

		if(linelen == strlen(tec) &amp;&amp; strncmp(tec, buf, strlen(tec)) == 0)
				chunked = 1;
		else
			Bwrite(&amp;stdout, buf, linelen);
	}
	if(buf) {
		Bwrite(&amp;stdout, buf, linelen);
		chunked ? read_chunked() : read_plain();
	}
	Bterm(&amp;stdin);
	Bterm(&amp;stdout);
	exits(0);
}

// 8c dechunk.c &amp;&amp; 8l dechunk.8 &amp;&amp; mv 8.out dechunk

// dechunk &lt; chunked.html
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