Improved 7-Zip decompressor

Removed --static argument

Small fixes at variable names and f-strings

common/comp_efi.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+#coding=utf-8
+
+"""
+Copyright (C) 2022 Plato Mavropoulos
+"""
+
+import os
+import subprocess
+
+from common.path_ops import project_root, safe_path
+from common.system import get_os_ver
+from common.system import printer
+
+def get_compress_sizes(data):    
+    size_compress = int.from_bytes(data[0x0:0x4], 'little')
+    size_original = int.from_bytes(data[0x4:0x8], 'little')
+    
+    return size_compress, size_original
+
+def is_efi_compressed(data, strict=True):
+    size_comp,size_orig = get_compress_sizes(data)
+    
+    check_diff = size_comp < size_orig
+    
+    if strict: check_size = size_comp + 0x8 == len(data)
+    else: check_size = size_comp + 0x8 <= len(data)
+    
+    return check_diff and check_size
+
+# Get TianoCompress path
+def get_tiano_path():
+    exec_name = f'TianoCompress{".exe" if get_os_ver()[1] else ""}'
+    
+    return safe_path(project_root(), ['external',exec_name])
+
+# EFI/Tiano Decompression via TianoCompress
+def efi_decompress(in_path, out_path, padding=0, comp_type='--uefi'):
+    try:
+        subprocess.run([get_tiano_path(), '-d', in_path, '-o', out_path, '-q', comp_type], check=True, stdout=subprocess.DEVNULL)
+        
+        with open(in_path, 'rb') as file: _,size_orig = get_compress_sizes(file.read())
+        
+        if os.path.getsize(out_path) != size_orig: raise Exception('EFI_DECOMPRESS_ERROR')
+    except:
+        printer(f'Error: TianoCompress could not extract file {in_path}!', padding)
+        
+        return 1
+    
+    printer('Succesfull EFI decompression via TianoCompress!', padding)
+    
+    return 0