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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2726 | vana | 1 | /*++ |
| 2 | |||
| 3 | Copyright (c) 1998 Intel Corporation |
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| 4 | |||
| 5 | Module Name: |
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| 6 | |||
| 7 | BoxDraw.c |
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| 8 | |||
| 9 | Abstract: |
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| 10 | Lib functions to support Box Draw Unicode code pages. |
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| 11 | |||
| 12 | |||
| 13 | |||
| 14 | Revision History |
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| 15 | |||
| 16 | --*/ |
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| 17 | |||
| 18 | #include "lib.h" |
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| 19 | |||
| 20 | typedef struct { |
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| 21 | CHAR16 Unicode; |
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| 22 | CHAR8 PcAnsi; |
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| 23 | CHAR8 Ascii; |
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| 24 | } UNICODE_TO_CHAR; |
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| 25 | |||
| 26 | |||
| 27 | // |
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| 28 | // This list is used to define the valid extend chars. |
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| 29 | // It also provides a mapping from Unicode to PCANSI or |
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| 30 | // ASCII. The ASCII mapping we just made up. |
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| 31 | // |
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| 32 | // |
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| 33 | |||
| 34 | STATIC UNICODE_TO_CHAR UnicodeToPcAnsiOrAscii[] = { |
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| 35 | { BOXDRAW_HORIZONTAL, 0xc4, L'-'}, |
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| 36 | { BOXDRAW_VERTICAL, 0xb3, L'|'}, |
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| 37 | { BOXDRAW_DOWN_RIGHT, 0xda, L'/'}, |
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| 38 | { BOXDRAW_DOWN_LEFT, 0xbf, L'\\'}, |
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| 39 | { BOXDRAW_UP_RIGHT, 0xc0, L'\\'}, |
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| 40 | { BOXDRAW_UP_LEFT, 0xd9, L'/'}, |
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| 41 | { BOXDRAW_VERTICAL_RIGHT, 0xc3, L'|'}, |
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| 42 | { BOXDRAW_VERTICAL_LEFT, 0xb4, L'|'}, |
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| 43 | { BOXDRAW_DOWN_HORIZONTAL, 0xc2, L'+'}, |
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| 44 | { BOXDRAW_UP_HORIZONTAL, 0xc1, L'+'}, |
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| 45 | { BOXDRAW_VERTICAL_HORIZONTAL, 0xc5, L'+'}, |
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| 46 | { BOXDRAW_DOUBLE_HORIZONTAL, 0xcd, L'-'}, |
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| 47 | { BOXDRAW_DOUBLE_VERTICAL, 0xba, L'|'}, |
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| 48 | { BOXDRAW_DOWN_RIGHT_DOUBLE, 0xd5, L'/'}, |
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| 49 | { BOXDRAW_DOWN_DOUBLE_RIGHT, 0xd6, L'/'}, |
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| 50 | { BOXDRAW_DOUBLE_DOWN_RIGHT, 0xc9, L'/'}, |
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| 51 | { BOXDRAW_DOWN_LEFT_DOUBLE, 0xb8, L'\\'}, |
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| 52 | { BOXDRAW_DOWN_DOUBLE_LEFT, 0xb7, L'\\'}, |
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| 53 | { BOXDRAW_DOUBLE_DOWN_LEFT, 0xbb, L'\\'}, |
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| 54 | { BOXDRAW_UP_RIGHT_DOUBLE, 0xd4, L'\\'}, |
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| 55 | { BOXDRAW_UP_DOUBLE_RIGHT, 0xd3, L'\\'}, |
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| 56 | { BOXDRAW_DOUBLE_UP_RIGHT, 0xc8, L'\\'}, |
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| 57 | { BOXDRAW_UP_LEFT_DOUBLE, 0xbe, L'/'}, |
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| 58 | { BOXDRAW_UP_DOUBLE_LEFT, 0xbd, L'/'}, |
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| 59 | { BOXDRAW_DOUBLE_UP_LEFT, 0xbc, L'/'}, |
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| 60 | { BOXDRAW_VERTICAL_RIGHT_DOUBLE, 0xc6, L'|'}, |
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| 61 | { BOXDRAW_VERTICAL_DOUBLE_RIGHT, 0xc7, L'|'}, |
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| 62 | { BOXDRAW_DOUBLE_VERTICAL_RIGHT, 0xcc, L'|'}, |
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| 63 | { BOXDRAW_VERTICAL_LEFT_DOUBLE, 0xb5, L'|'}, |
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| 64 | { BOXDRAW_VERTICAL_DOUBLE_LEFT, 0xb6, L'|'}, |
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| 65 | { BOXDRAW_DOUBLE_VERTICAL_LEFT, 0xb9, L'|'}, |
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| 66 | { BOXDRAW_DOWN_HORIZONTAL_DOUBLE, 0xd1, L'+'}, |
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| 67 | { BOXDRAW_DOWN_DOUBLE_HORIZONTAL, 0xd2, L'+'}, |
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| 68 | { BOXDRAW_DOUBLE_DOWN_HORIZONTAL, 0xcb, L'+'}, |
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| 69 | { BOXDRAW_UP_HORIZONTAL_DOUBLE, 0xcf, L'+'}, |
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| 70 | { BOXDRAW_UP_DOUBLE_HORIZONTAL, 0xd0, L'+'}, |
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| 71 | { BOXDRAW_DOUBLE_UP_HORIZONTAL, 0xca, L'+'}, |
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| 72 | { BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE, 0xd8, L'+'}, |
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| 73 | { BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL, 0xd7, L'+'}, |
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| 74 | { BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL, 0xce, L'+'}, |
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| 75 | |||
| 76 | { BLOCKELEMENT_FULL_BLOCK, 0xdb, L'*'}, |
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| 77 | { BLOCKELEMENT_LIGHT_SHADE, 0xb0, L'+'}, |
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| 78 | |||
| 79 | { GEOMETRICSHAPE_UP_TRIANGLE, 0x1e, L'^'}, |
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| 80 | { GEOMETRICSHAPE_RIGHT_TRIANGLE, 0x10, L'>'}, |
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| 81 | { GEOMETRICSHAPE_DOWN_TRIANGLE, 0x1f, L'v'}, |
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| 82 | { GEOMETRICSHAPE_LEFT_TRIANGLE, 0x11, L'<'}, |
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| 83 | |||
| 84 | /* BugBug: Left Arrow is an ESC. We can not make it print |
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| 85 | on a PCANSI terminal. If we can make left arrow |
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| 86 | come out on PC ANSI we can add it back. |
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| 87 | |||
| 88 | { ARROW_LEFT, 0x1b, L'<'}, |
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| 89 | */ |
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| 90 | |||
| 91 | { ARROW_UP, 0x18, L'^'}, |
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| 92 | |||
| 93 | /* BugBut: Took out left arrow so right has to go too. |
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| 94 | { ARROW_RIGHT, 0x1a, L'>'}, |
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| 95 | */ |
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| 96 | { ARROW_DOWN, 0x19, L'v'}, |
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| 97 | |||
| 98 | { 0x0000, 0x00 } |
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| 99 | }; |
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| 100 | |||
| 101 | |||
| 102 | BOOLEAN |
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| 103 | LibIsValidTextGraphics ( |
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| 104 | IN CHAR16 Graphic, |
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| 105 | OUT CHAR8 *PcAnsi, OPTIONAL |
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| 106 | OUT CHAR8 *Ascii OPTIONAL |
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| 107 | ) |
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| 108 | /*++ |
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| 109 | |||
| 110 | Routine Description: |
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| 111 | |||
| 112 | Detects if a Unicode char is for Box Drawing text graphics. |
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| 113 | |||
| 114 | Arguments: |
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| 115 | |||
| 116 | Grphic - Unicode char to test. |
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| 117 | |||
| 118 | PcAnsi - Optional pointer to return PCANSI equivalent of Graphic. |
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| 119 | |||
| 120 | Asci - Optional pointer to return Ascii equivalent of Graphic. |
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| 121 | |||
| 122 | Returns: |
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| 123 | |||
| 124 | TRUE if Gpaphic is a supported Unicode Box Drawing character. |
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| 125 | |||
| 126 | --*/{ |
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| 127 | UNICODE_TO_CHAR *Table; |
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| 128 | |||
| 129 | if ((((Graphic & 0xff00) != 0x2500) && ((Graphic & 0xff00) != 0x2100))) { |
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| 130 | |||
| 131 | // |
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| 132 | // Unicode drawing code charts are all in the 0x25xx range, |
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| 133 | // arrows are 0x21xx |
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| 134 | // |
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| 135 | return FALSE; |
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| 136 | } |
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| 137 | |||
| 138 | for (Table = UnicodeToPcAnsiOrAscii; Table->Unicode != 0x0000; Table++) { |
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| 139 | if (Graphic == Table->Unicode) { |
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| 140 | if (PcAnsi) { |
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| 141 | *PcAnsi = Table->PcAnsi; |
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| 142 | } |
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| 143 | if (Ascii) { |
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| 144 | *Ascii = Table->Ascii; |
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| 145 | } |
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| 146 | return TRUE; |
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| 147 | } |
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| 148 | } |
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| 149 | return FALSE; |
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| 150 | } |
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| 151 | |||
| 152 | BOOLEAN |
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| 153 | IsValidAscii ( |
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| 154 | IN CHAR16 Ascii |
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| 155 | ) |
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| 156 | { |
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| 157 | if ((Ascii >= 0x20) && (Ascii <= 0x7f)) { |
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| 158 | return TRUE; |
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| 159 | } |
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| 160 | return FALSE; |
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| 161 | } |
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| 162 | |||
| 163 | BOOLEAN |
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| 164 | IsValidEfiCntlChar ( |
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| 165 | IN CHAR16 c |
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| 166 | ) |
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| 167 | { |
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| 168 | if (c == CHAR_NULL || c == CHAR_BACKSPACE || c == CHAR_LINEFEED || c == CHAR_CARRIAGE_RETURN) { |
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| 169 | return TRUE; |
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| 170 | } |
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| 171 | return FALSE; |
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| 172 | } |
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| 173 |