X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.fastlz%2Fnative%2Ffastlz_read.c;fp=bundles%2Forg.simantics.fastlz%2Fnative%2Ffastlz_read.c;h=50314f2590e195b1df372e3aa4390dc0a02df402;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.fastlz/native/fastlz_read.c b/bundles/org.simantics.fastlz/native/fastlz_read.c
new file mode 100644
index 000000000..50314f259
--- /dev/null
+++ b/bundles/org.simantics.fastlz/native/fastlz_read.c
@@ -0,0 +1,82 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "fastlz.h"
+
+char* uncompressed;
+int uncompressedCapacity;
+int position;
+int uncompressedSize;
+char* compressed;
+int compressedCapacity;
+
+FILE* handle;
+
+void initRead(FILE* _handle) {
+    uncompressed = 0;
+    uncompressedCapacity = 0;
+    position = 0;
+    uncompressedSize = 0;    
+    compressed = malloc(8);
+    compressedCapacity = 8;
+    handle = _handle;
+}
+
+void deinitRead() {
+    free(uncompressed);
+    uncompressed = 0;
+    free(compressed);
+    compressed = 0;
+    handle = 0;
+}
+
+void fillBuffer() {
+    int compressedSize;
+
+    fread(compressed, 8, 1, handle);
+    compressedSize = ((int*)compressed)[0];
+    uncompressedSize = ((int*)compressed)[1];
+    
+    if(compressedSize > compressedCapacity) {
+        free(compressed);
+        compressed = malloc(compressedSize);
+        compressedCapacity = compressedSize;
+    }
+    if(uncompressedSize > uncompressedCapacity) {
+        free(uncompressed);
+        uncompressed = malloc(uncompressedSize);
+        uncompressedCapacity = uncompressedSize;
+    }
+
+    fread(compressed, compressedSize, 1, handle);
+    printf("decompress %d %d %d %d\n", compressedSize, compressedCapacity, uncompressedSize, uncompressedCapacity); fflush(stdout);
+    fastlz_decompress(compressed, compressedSize, uncompressed, uncompressedSize); 
+    position = 0;
+}
+
+void read(char* data, int offset, int length) {
+    int s;
+
+    while(length > uncompressedSize - position) {
+        s = uncompressedSize - position;
+        memcpy(data + offset, uncompressed + position, s);
+        offset += s;
+        length -= s;
+        fillBuffer();
+    }
+    memcpy(data + offset, uncompressed + position, length);
+    position += length;
+}
+
+