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page: add cbz support

--- a/sys/src/cmd/page.c

+++ b/sys/src/cmd/page.c

@@ -238,6 +238,36 @@

 	return fd;

 }

+int

+popentape(Page *p)

+{

+	char mnt[32], cmd[NPATH], *argv[4];

+

+	snprint(mnt, sizeof(mnt), "/n/tapefs.%.12d%.8lux", getpid(), (ulong)p);

+	switch(rfork(RFREND|RFPROC|RFFDG)){

+	case -1:

+		close(p->fd);

+		p->fd = -1;

+		return -1;

+	case 0:

+		dup(p->fd, 0);

+		argv[0] = "rc";

+		argv[1] = "-c";

+		snprint(cmd, sizeof(cmd), "%s -m %s /fd/0", p->data, mnt);

+		argv[2] = cmd;

+		argv[3] = nil;

+		exec("/bin/rc", argv);

+		sysfatal("exec: %r");

+	}

+	waitpid();

+	close(p->fd);

+	p->fd = -1;

+	p->open = popenfile;

+	p->data = strdup(mnt);

+	return p->open(p);

+}

+

+

 typedef struct Ghost Ghost;

 struct Ghost

 {

@@ -524,6 +554,10 @@

 	else if(memcmp(buf, "\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1", 8) == 0){

 		p->data = "doc2ps";

 		p->open = popengs;

+	}

+	else if(memcmp(buf, "PK\x03\x04", 4) == 0){

+		p->data = "fs/zipfs";

+		p->open = popentape;

 	}

 	else if(memcmp(buf, "GIF", 3) == 0)

 		p->data = "gif -t9";

-- 

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