X-Git-Url: http://git.tdb.fi/?p=gldbg.git;a=blobdiff_plain;f=source%2Fgldump.c;h=79896c2fa4bad9c902726e949d03015b899160ae;hp=3a6707b962abd6e7cf8b058809067b28a781602a;hb=0cdc7b50b0e7758a1660c94be664a810504a88f4;hpb=9d1825d591a7261b1cff620ba535d333352984bf

diff --git a/source/gldump.c b/source/gldump.c
index 3a6707b..79896c2 100644
--- a/source/gldump.c
+++ b/source/gldump.c
@@ -7,43 +7,54 @@ Distributed under the GPL
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
 #include "glprint.h"
 
 int main(int argc, char **argv)
 {
-	FILE *in;
+	int fd;
+	struct stat st;
 	GlDecoder *dec;
-	char *buf;
-	unsigned size;
-	unsigned start;
-	unsigned end;
+	char *addr;
+	char *end;
+	char *ptr;
 
-	in = fopen(argv[1], "r");
+	if(argc<2)
+	{
+		fprintf(stderr, "Usage: %s <dumpfile>\n", argv[0]);
+		return 1;
+	}
+
+	fd = open(argv[1], O_RDONLY);
+	if(fd==-1)
+	{
+		perror("open");
+		return 1;
+	}
+	fstat(fd, &st);
+	addr = (char *)mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
+	end = addr+st.st_size;
+	ptr = addr;
 
 	dec = glprint_new(NULL, 0);
 
-	size = 16384;
-	buf = (char *)malloc(size);
-	start = 0;
-	end = 0;
-	while(1)
+	while(ptr<end)
 	{
-		if(start>size/2)
+		int ret;
+		ret = gldecoder_decode(dec, ptr, end-ptr);
+		if(ret<0)
 		{
-			memmove(buf, buf+start, end-start);
-			end -= start;
-			start = 0;
-		}
-		if(end<size && !feof(in))
-			end += fread(buf+end, 1, size-end, in);
-		else if(start==end)
+			fprintf(stderr, "Decode error\n");
 			break;
-		start += gldecoder_decode(dec, buf+start, end-start);
+		}
+		ptr += ret;
 		printf("%s\n", glprint_get_buffer(dec));
 	}
-	fclose(in);
-	free(buf);
+	munmap(addr, st.st_size);
+	close(fd);
 	gldecoder_delete(dec);
 
 	return 0;