Add huffman decompression for EPG data

Makefile

@@ -15,6 +15,7 @@ DEFS=-D_REENTRANT -D_TS_ERRNO -DHMT_PROTECT
 SRCS=	descriptor.c \
 	epg.c \
 	file.c \
+	huffman.c \
 	main.c \
 	util.c
 

descriptor.c

@@ -64,6 +64,22 @@ read_lstring(struct epg *epg, unsigned int *len)
 	return c;
 }
 
+static void
+uncompress_epg(char **epg, unsigned int *epglen)
+{
+	char *new;
+	unsigned int newlen;
+
+	if ((new = (char *)
+	    freeview_huffman_to_string((unsigned char *)(*epg),
+	    *epglen, &newlen)))
+	{
+		free(*epg);
+		*epg = new;
+		*epglen = newlen;
+	}
+}
+
 void
 read_descriptor(struct epg *epg, struct descriptor *d)
 {
@@ -78,6 +94,14 @@ read_descriptor(struct epg *epg, struct descriptor *d)
 		    read_lstring(epg, &d->content.d77.namelen);
 		d->content.d77.text =
 		    read_lstring(epg, &d->content.d77.textlen);
+
+		if (*d->content.d77.name == 0x1f)
+			uncompress_epg(&d->content.d77.name,
+			    &d->content.d77.namelen);
+
+		if (*d->content.d77.text == 0x1f)
+			uncompress_epg(&d->content.d77.text,
+			    &d->content.d77.textlen);
 		break;
 
 	    case DS_COMPONENT:

lint.h

@@ -40,6 +40,9 @@ void skip_descriptor(struct epg *, struct descriptor *);
 void dump_descriptor(struct descriptor *, int);
 void free_descriptor(struct descriptor *);
 
+unsigned char *freeview_huffman_to_string(const unsigned char *, uint,
+    unsigned int *);
+
 #ifdef sun
 char *strcasestr (char *, char *);
 #endif