fix: int32 for crc table

eshaz · Mar 27, 2023 · f6f0440 · f6f0440
1 parent 7861a57
commit f6f0440
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Showing 5 changed files with 14 additions and 11 deletions.
diff --git a/dist/esm.js b/dist/esm.js
diff --git a/dist/index.js b/dist/index.js
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "simple-yenc",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Minimalist yEnc and dynEncode encoder and decoder library for browser and NodeJS",
   "main": "./dist/index.js",
   "module": "./dist/esm.js",

diff --git a/src/simple-yenc.js b/src/simple-yenc.js
@@ -1,18 +1,21 @@
 /* See https://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=libiberty/crc32.c;hb=refs/heads/master */
 const crc32 = (buf, init = 0xffffffff, poly = 0x04c11db7) => {
-  const crc32Table = new Uint8Array(256);
-  let i, j, c;
+  const crc32Table = new Int32Array(256);
+  let i,
+    j,
+    c,
+    crc = init;
 
   for (i = 0; i < 256; i++) {
     for (c = i << 24, j = 8; j > 0; --j)
       c = c & 0x80000000 ? (c << 1) ^ poly : c << 1;
     crc32Table[i] = c;
   }
 
-  return buf.reduce(
-    (crc, val) => (crc << 8) ^ crc32Table[((crc >> 24) ^ val) & 255],
-    init
-  );
+  for (i = 0; i < buf.length; i++)
+    crc = (crc << 8) ^ crc32Table[((crc >> 24) ^ buf[i]) & 255];
+
+  return crc;
 };
 
 const encode = (byteArray) => {