Changeset 46 in xtideuniversalbios for trunk/Assembly_Library/Src/String

Timestamp:

Oct 4, 2010, 7:38:36 AM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to Assembly Library:
Sorting now works (pivot item is copied for comparison and index comparisons are now signed instead of unsigned).
Menu shadow now looks better on black and white modes.
Sorting is now implemented for File Fialog: directories are displayed before files.
File Dialog now displays directories with upper case letters and files with lower case letters.
Line splitter now removes all empty lines from the end.

File:

• trunk/Assembly_Library/Src/String/String.asm (modified) (2 diffs)

trunk/Assembly_Library/Src/String/String.asm

@@ -2 +2 @@
 ; Project name  :   Assembly Library
 ; Created date  :   12.7.2010
-; Last update   :   6.9.2010
+; Last update   :   1.10.2010
 ; Author        :   Tomi Tilli
 ; Description   :   Functions for handling characters.
@@ -76 +76 @@
     pop     ax
     ret
+
+
+;--------------------------------------------------------------------
+; String_ConvertDSSItoLowerCase
+;   Parameters:
+;       DS:SI:  Ptr to NULL terminated string to convert
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       Nothing
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+String_ConvertDSSItoLowerCase:
+    push    si
+    push    ax
+
+ALIGN JUMP_ALIGN
+.ConvertNextCharacter:
+    lodsb
+    test    al, al              ; NULL to end string?
+    jz      SHORT .EndOfString
+    call    Char_ALtoLowerCaseLetter
+    mov     [si-1], al
+    jmp     SHORT .ConvertNextCharacter
+
+ALIGN JUMP_ALIGN
+.EndOfString:
+    pop     ax
+    pop     si
+    ret