From e98e804815440e0d44f512087a6cab2546b5c95f Mon Sep 17 00:00:00 2001
From: LSchnuriger <loic.cham74@gmail.com>
Date: Sun, 2 Jun 2024 20:39:18 +0000
Subject: [PATCH] Add .doc files

---
 src/core/file-types/index.ts |  1 +
 src/core/file-types/other.ts | 12 ++++++++++++
 src/validation/other.ts      | 12 ++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/src/core/file-types/index.ts b/src/core/file-types/index.ts
index 0fb3926..b282651 100644
--- a/src/core/file-types/index.ts
+++ b/src/core/file-types/index.ts
@@ -82,6 +82,7 @@ export class FileTypes {
   static SQLITE: FileInfo = OtherTypes.SQLITE;
   static STL: FileInfo = OtherTypes.STL;
   static TTF: FileInfo = OtherTypes.TTF;
+  static DOC: FileInfo = OtherTypes.DOC;
 
   /**
    * Receive information on a file type by its property name from FileTypes class
diff --git a/src/core/file-types/other.ts b/src/core/file-types/other.ts
index 7157fbf..6e1b0ce 100644
--- a/src/core/file-types/other.ts
+++ b/src/core/file-types/other.ts
@@ -136,4 +136,16 @@ export class OtherTypes {
       },
     ],
   };
+
+  static DOC: FileInfo = {
+    extension: "doc",
+    mimeType: "application/msword",
+    description: "Old microsoft Word documents",
+    signatures: [
+      {
+        sequence: [0xd0, 0xcf, 0x11, 0xe0, 0xa1, 0xb1, 0x1a, 0xe1],
+        compatibleExtensions: ["xls", "ppt", "msi", "msg"],
+      },
+    ],
+  };
 }
diff --git a/src/validation/other.ts b/src/validation/other.ts
index d223b64..05f8cfc 100644
--- a/src/validation/other.ts
+++ b/src/validation/other.ts
@@ -140,3 +140,15 @@ export function isTTF(file: Array<number> | ArrayBuffer | Uint8Array): boolean {
   const fileChunk: Array<number> = getFileChunk(file);
   return FileTypes.checkByFileType(fileChunk, "ttf");
 }
+
+/**
+ * Determine if file content contains a valid 'doc' file signature
+ *
+ * @param file File content represents in Array<number> / ArrayBuffer / Uint8Array
+ *
+ * @returns {boolean} True if found a signature of type 'ttf' in file content, otherwise false
+ */
+export function isDOC(file: Array<number> | ArrayBuffer | Uint8Array): boolean {
+  const fileChunk: Array<number> = getFileChunk(file);
+  return FileTypes.checkByFileType(fileChunk, "doc");
+}
\ No newline at end of file