| /*++ |
| |
| 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, L'\0' } |
| }; |
| |
| |
| 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; |
| } |
| |