Initial commit gnu-efi_3.0rversionT

1 files changed, 173 insertions, 0 deletions

diff --git a/gnu-efi-3.0/lib/boxdraw.c b/gnu-efi-3.0/lib/boxdraw.c
new file mode 100644
index 0000000..ec3490a
--- /dev/null
+++ b/gnu-efi-3.0/lib/boxdraw.c
@@ -0,0 +1,173 @@
+/*++
+
+Copyright (c) 1998  Intel Corporation
+
+Module Name:
+
+    BoxDraw.c
+
+Abstract:
+    Lib functions to support Box Draw Unicode code pages.
+
+
+
+Revision History
+
+--*/
+
+#include "lib.h"
+
+typedef struct {
+    CHAR16  Unicode;
+    CHAR8   PcAnsi;
+    CHAR8   Ascii;
+} UNICODE_TO_CHAR;
+
+
+//
+// This list is used to define the valid extend chars.
+// It also provides a mapping from Unicode to PCANSI or
+// ASCII. The ASCII mapping we just made up.
+//
+//
+
+STATIC UNICODE_TO_CHAR UnicodeToPcAnsiOrAscii[] = {
+    { BOXDRAW_HORIZONTAL,                 0xc4, L'-'}, 
+    { BOXDRAW_VERTICAL,                   0xb3, L'|'},
+    { BOXDRAW_DOWN_RIGHT,                 0xda, L'/'},
+    { BOXDRAW_DOWN_LEFT,                  0xbf, L'\\'},
+    { BOXDRAW_UP_RIGHT,                   0xc0, L'\\'},
+    { BOXDRAW_UP_LEFT,                    0xd9, L'/'},
+    { BOXDRAW_VERTICAL_RIGHT,             0xc3, L'|'},
+    { BOXDRAW_VERTICAL_LEFT,              0xb4, L'|'},
+    { BOXDRAW_DOWN_HORIZONTAL,            0xc2, L'+'},
+    { BOXDRAW_UP_HORIZONTAL,              0xc1, L'+'},
+    { BOXDRAW_VERTICAL_HORIZONTAL,        0xc5, L'+'},
+    { BOXDRAW_DOUBLE_HORIZONTAL,          0xcd, L'-'},
+    { BOXDRAW_DOUBLE_VERTICAL,            0xba, L'|'},
+    { BOXDRAW_DOWN_RIGHT_DOUBLE,          0xd5, L'/'},
+    { BOXDRAW_DOWN_DOUBLE_RIGHT,          0xd6, L'/'},
+    { BOXDRAW_DOUBLE_DOWN_RIGHT,          0xc9, L'/'},
+    { BOXDRAW_DOWN_LEFT_DOUBLE,           0xb8, L'\\'},
+    { BOXDRAW_DOWN_DOUBLE_LEFT,           0xb7, L'\\'},
+    { BOXDRAW_DOUBLE_DOWN_LEFT,           0xbb, L'\\'},
+    { BOXDRAW_UP_RIGHT_DOUBLE,            0xd4, L'\\'},
+    { BOXDRAW_UP_DOUBLE_RIGHT,            0xd3, L'\\'},
+    { BOXDRAW_DOUBLE_UP_RIGHT,            0xc8, L'\\'},
+    { BOXDRAW_UP_LEFT_DOUBLE,             0xbe, L'/'},
+    { BOXDRAW_UP_DOUBLE_LEFT,             0xbd, L'/'},
+    { BOXDRAW_DOUBLE_UP_LEFT,             0xbc, L'/'},
+    { BOXDRAW_VERTICAL_RIGHT_DOUBLE,      0xc6, L'|'},
+    { BOXDRAW_VERTICAL_DOUBLE_RIGHT,      0xc7, L'|'},
+    { BOXDRAW_DOUBLE_VERTICAL_RIGHT,      0xcc, L'|'},
+    { BOXDRAW_VERTICAL_LEFT_DOUBLE,       0xb5, L'|'},
+    { BOXDRAW_VERTICAL_DOUBLE_LEFT,       0xb6, L'|'},
+    { BOXDRAW_DOUBLE_VERTICAL_LEFT,       0xb9, L'|'},
+    { BOXDRAW_DOWN_HORIZONTAL_DOUBLE,     0xd1, L'+'},
+    { BOXDRAW_DOWN_DOUBLE_HORIZONTAL,     0xd2, L'+'},
+    { BOXDRAW_DOUBLE_DOWN_HORIZONTAL,     0xcb, L'+'},
+    { BOXDRAW_UP_HORIZONTAL_DOUBLE,       0xcf, L'+'},
+    { BOXDRAW_UP_DOUBLE_HORIZONTAL,       0xd0, L'+'},
+    { BOXDRAW_DOUBLE_UP_HORIZONTAL,       0xca, L'+'},
+    { BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE, 0xd8, L'+'},
+    { BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL, 0xd7, L'+'},
+    { BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL, 0xce, L'+'},
+
+    { BLOCKELEMENT_FULL_BLOCK,            0xdb, L'*'},
+    { BLOCKELEMENT_LIGHT_SHADE,           0xb0, L'+'},
+
+    { GEOMETRICSHAPE_UP_TRIANGLE,         0x1e, L'^'},
+    { GEOMETRICSHAPE_RIGHT_TRIANGLE,      0x10, L'>'},
+    { GEOMETRICSHAPE_DOWN_TRIANGLE,       0x1f, L'v'},
+    { GEOMETRICSHAPE_LEFT_TRIANGLE,       0x11, L'<'},
+
+    /* BugBug: Left Arrow is an ESC. We can not make it print
+                on a PCANSI terminal. If we can make left arrow 
+                come out on PC ANSI we can add it back.
+
+    { ARROW_LEFT,                         0x1b, L'<'},
+    */
+
+    { ARROW_UP,                           0x18, L'^'},
+    
+    /* BugBut: Took out left arrow so right has to go too.
+       { ARROW_RIGHT,                        0x1a, L'>'},
+    */      
+    { ARROW_DOWN,                         0x19, L'v'},
+    
+    { 0x0000, 0x00 }
+};
+
+
+BOOLEAN
+LibIsValidTextGraphics (
+    IN  CHAR16  Graphic,
+    OUT CHAR8   *PcAnsi,    OPTIONAL
+    OUT CHAR8   *Ascii      OPTIONAL
+    )
+/*++
+
+Routine Description:
+
+    Detects if a Unicode char is for Box Drawing text graphics.
+
+Arguments:
+
+    Grphic  - Unicode char to test.
+
+    PcAnsi  - Optional pointer to return PCANSI equivalent of Graphic.
+
+    Asci    - Optional pointer to return Ascii equivalent of Graphic.
+
+Returns:
+
+    TRUE if Gpaphic is a supported Unicode Box Drawing character.
+
+--*/{
+    UNICODE_TO_CHAR     *Table;
+
+    if ((((Graphic & 0xff00) != 0x2500) && ((Graphic & 0xff00) != 0x2100))) {
+     
+        //
+        // Unicode drawing code charts are all in the 0x25xx range, 
+        //  arrows are 0x21xx
+        //
+        return FALSE;
+    }
+
+    for (Table = UnicodeToPcAnsiOrAscii; Table->Unicode != 0x0000; Table++) {
+        if (Graphic == Table->Unicode) {
+            if (PcAnsi) {
+                *PcAnsi = Table->PcAnsi; 
+            }
+            if (Ascii) {
+                *Ascii = Table->Ascii;
+            }
+            return TRUE;
+        }
+    }
+    return FALSE;
+}
+
+BOOLEAN
+IsValidAscii (
+    IN  CHAR16  Ascii
+    )
+{
+    if ((Ascii >= 0x20) && (Ascii <= 0x7f)) {
+        return TRUE;
+    }              
+    return FALSE;
+}
+
+BOOLEAN
+IsValidEfiCntlChar (
+    IN  CHAR16  c
+    )
+{
+    if (c == CHAR_NULL || c == CHAR_BACKSPACE || c == CHAR_LINEFEED || c == CHAR_CARRIAGE_RETURN) {
+        return TRUE;
+    }              
+    return FALSE;
+}
+