From fa2b7a036f7d703015ec0a36dc51ca324de837bf Mon Sep 17 00:00:00 2001
From: nishi <nishi@d4a5a174-5a4a-5b4b-b672-37683c10d7d5>
Date: Sat, 18 May 2024 00:28:39 +0000
Subject: [PATCH] check endian and stuff

git-svn-id: file:///raid/svn-main/nishi-dataworks/trunk@19 d4a5a174-5a4a-5b4b-b672-37683c10d7d5
---
 Client/main.c       | 5 +++++
 FORMAT              | 6 ++++++
 Library/dataworks.c | 6 +++++-
 Library/dataworks.h | 8 ++++++++
 4 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/Client/main.c b/Client/main.c
index af8d04c..3259232 100644
--- a/Client/main.c
+++ b/Client/main.c
@@ -77,6 +77,11 @@ int main(int argc, char** argv) {
 		fflush(stdout);
 	}
 	printf("DataWorks  version %s  %s %s\n", dataworks_get_version(), dataworks_get_compile_date(), dataworks_get_platform());
+	if(dataworks_get_endian() == 'L') {
+		printf("This system is little-endian.\n");
+	} else {
+		printf("This system is big-endian.\n");
+	}
 	printf("\n");
 	printf("Copyright (c) Nishi 2024\n");
 	printf("All rights reserved.\n");
diff --git a/FORMAT b/FORMAT
index e29b2fa..443503d 100644
--- a/FORMAT
+++ b/FORMAT
@@ -1,6 +1,12 @@
 DataWorks Database Format
 ==============================================
 Extension should be .dwf
+
+
 First 3 bytes should be 7F 44 57 (\x7F DW)
+
+Every entries should look like this:
+type: 1 byte ASCII
+length: 4, uint32_t
 ==============================================
 $Id$
diff --git a/Library/dataworks.c b/Library/dataworks.c
index 899d43e..15eb4d9 100644
--- a/Library/dataworks.c
+++ b/Library/dataworks.c
@@ -40,8 +40,12 @@ const char* dataworks_platform = "Linux/"
 #else
 const char* dataworks_platform = "Unknown/"
 #endif
-PLATFORM_M " (" PLATFORM_P ")";
+    PLATFORM_M " (" PLATFORM_P ")";
 
 const char* dataworks_get_version(void) { return dataworks_version; }
 const char* dataworks_get_compile_date(void) { return dataworks_compile_date; }
 const char* dataworks_get_platform(void) { return dataworks_platform; }
+char dataworks_get_endian(void) {
+	unsigned short n = 1;
+	return *(char*)&n == 1 ? 'L' : 'B';
+}
diff --git a/Library/dataworks.h b/Library/dataworks.h
index 4725a75..b3d1021 100644
--- a/Library/dataworks.h
+++ b/Library/dataworks.h
@@ -64,6 +64,14 @@ const char* dataworks_get_compile_date(void);
  */
 const char* dataworks_get_platform(void);
 
+/**
+ * @~english
+ * @brief Get the compilation endian of DataWorks
+ * @return Compilation endian of DataWorks
+ *
+ */
+char dataworks_get_endian(void);
+
 #ifdef __cplusplus
 }
 #endif
-- 
2.43.0