boxdraw.c revision 1.1.1.1
1/* $NetBSD: boxdraw.c,v 1.1.1.1 2014/04/01 16:16:06 jakllsch Exp $ */ 2 3/*++ 4 5Copyright (c) 1998 Intel Corporation 6 7Module Name: 8 9 BoxDraw.c 10 11Abstract: 12 Lib functions to support Box Draw Unicode code pages. 13 14 15 16Revision History 17 18--*/ 19 20#include "lib.h" 21 22typedef struct { 23 CHAR16 Unicode; 24 CHAR8 PcAnsi; 25 CHAR8 Ascii; 26} UNICODE_TO_CHAR; 27 28 29// 30// This list is used to define the valid extend chars. 31// It also provides a mapping from Unicode to PCANSI or 32// ASCII. The ASCII mapping we just made up. 33// 34// 35 36STATIC UNICODE_TO_CHAR UnicodeToPcAnsiOrAscii[] = { 37 { BOXDRAW_HORIZONTAL, 0xc4, L'-'}, 38 { BOXDRAW_VERTICAL, 0xb3, L'|'}, 39 { BOXDRAW_DOWN_RIGHT, 0xda, L'/'}, 40 { BOXDRAW_DOWN_LEFT, 0xbf, L'\\'}, 41 { BOXDRAW_UP_RIGHT, 0xc0, L'\\'}, 42 { BOXDRAW_UP_LEFT, 0xd9, L'/'}, 43 { BOXDRAW_VERTICAL_RIGHT, 0xc3, L'|'}, 44 { BOXDRAW_VERTICAL_LEFT, 0xb4, L'|'}, 45 { BOXDRAW_DOWN_HORIZONTAL, 0xc2, L'+'}, 46 { BOXDRAW_UP_HORIZONTAL, 0xc1, L'+'}, 47 { BOXDRAW_VERTICAL_HORIZONTAL, 0xc5, L'+'}, 48 { BOXDRAW_DOUBLE_HORIZONTAL, 0xcd, L'-'}, 49 { BOXDRAW_DOUBLE_VERTICAL, 0xba, L'|'}, 50 { BOXDRAW_DOWN_RIGHT_DOUBLE, 0xd5, L'/'}, 51 { BOXDRAW_DOWN_DOUBLE_RIGHT, 0xd6, L'/'}, 52 { BOXDRAW_DOUBLE_DOWN_RIGHT, 0xc9, L'/'}, 53 { BOXDRAW_DOWN_LEFT_DOUBLE, 0xb8, L'\\'}, 54 { BOXDRAW_DOWN_DOUBLE_LEFT, 0xb7, L'\\'}, 55 { BOXDRAW_DOUBLE_DOWN_LEFT, 0xbb, L'\\'}, 56 { BOXDRAW_UP_RIGHT_DOUBLE, 0xd4, L'\\'}, 57 { BOXDRAW_UP_DOUBLE_RIGHT, 0xd3, L'\\'}, 58 { BOXDRAW_DOUBLE_UP_RIGHT, 0xc8, L'\\'}, 59 { BOXDRAW_UP_LEFT_DOUBLE, 0xbe, L'/'}, 60 { BOXDRAW_UP_DOUBLE_LEFT, 0xbd, L'/'}, 61 { BOXDRAW_DOUBLE_UP_LEFT, 0xbc, L'/'}, 62 { BOXDRAW_VERTICAL_RIGHT_DOUBLE, 0xc6, L'|'}, 63 { BOXDRAW_VERTICAL_DOUBLE_RIGHT, 0xc7, L'|'}, 64 { BOXDRAW_DOUBLE_VERTICAL_RIGHT, 0xcc, L'|'}, 65 { BOXDRAW_VERTICAL_LEFT_DOUBLE, 0xb5, L'|'}, 66 { BOXDRAW_VERTICAL_DOUBLE_LEFT, 0xb6, L'|'}, 67 { BOXDRAW_DOUBLE_VERTICAL_LEFT, 0xb9, L'|'}, 68 { BOXDRAW_DOWN_HORIZONTAL_DOUBLE, 0xd1, L'+'}, 69 { BOXDRAW_DOWN_DOUBLE_HORIZONTAL, 0xd2, L'+'}, 70 { BOXDRAW_DOUBLE_DOWN_HORIZONTAL, 0xcb, L'+'}, 71 { BOXDRAW_UP_HORIZONTAL_DOUBLE, 0xcf, L'+'}, 72 { BOXDRAW_UP_DOUBLE_HORIZONTAL, 0xd0, L'+'}, 73 { BOXDRAW_DOUBLE_UP_HORIZONTAL, 0xca, L'+'}, 74 { BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE, 0xd8, L'+'}, 75 { BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL, 0xd7, L'+'}, 76 { BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL, 0xce, L'+'}, 77 78 { BLOCKELEMENT_FULL_BLOCK, 0xdb, L'*'}, 79 { BLOCKELEMENT_LIGHT_SHADE, 0xb0, L'+'}, 80 81 { GEOMETRICSHAPE_UP_TRIANGLE, 0x1e, L'^'}, 82 { GEOMETRICSHAPE_RIGHT_TRIANGLE, 0x10, L'>'}, 83 { GEOMETRICSHAPE_DOWN_TRIANGLE, 0x1f, L'v'}, 84 { GEOMETRICSHAPE_LEFT_TRIANGLE, 0x11, L'<'}, 85 86 /* BugBug: Left Arrow is an ESC. We can not make it print 87 on a PCANSI terminal. If we can make left arrow 88 come out on PC ANSI we can add it back. 89 90 { ARROW_LEFT, 0x1b, L'<'}, 91 */ 92 93 { ARROW_UP, 0x18, L'^'}, 94 95 /* BugBut: Took out left arrow so right has to go too. 96 { ARROW_RIGHT, 0x1a, L'>'}, 97 */ 98 { ARROW_DOWN, 0x19, L'v'}, 99 100 { 0x0000, 0x00 } 101}; 102 103 104BOOLEAN 105LibIsValidTextGraphics ( 106 IN CHAR16 Graphic, 107 OUT CHAR8 *PcAnsi, OPTIONAL 108 OUT CHAR8 *Ascii OPTIONAL 109 ) 110/*++ 111 112Routine Description: 113 114 Detects if a Unicode char is for Box Drawing text graphics. 115 116Arguments: 117 118 Grphic - Unicode char to test. 119 120 PcAnsi - Optional pointer to return PCANSI equivalent of Graphic. 121 122 Asci - Optional pointer to return Ascii equivalent of Graphic. 123 124Returns: 125 126 TRUE if Gpaphic is a supported Unicode Box Drawing character. 127 128--*/{ 129 UNICODE_TO_CHAR *Table; 130 131 if ((((Graphic & 0xff00) != 0x2500) && ((Graphic & 0xff00) != 0x2100))) { 132 133 // 134 // Unicode drawing code charts are all in the 0x25xx range, 135 // arrows are 0x21xx 136 // 137 return FALSE; 138 } 139 140 for (Table = UnicodeToPcAnsiOrAscii; Table->Unicode != 0x0000; Table++) { 141 if (Graphic == Table->Unicode) { 142 if (PcAnsi) { 143 *PcAnsi = Table->PcAnsi; 144 } 145 if (Ascii) { 146 *Ascii = Table->Ascii; 147 } 148 return TRUE; 149 } 150 } 151 return FALSE; 152} 153 154BOOLEAN 155IsValidAscii ( 156 IN CHAR16 Ascii 157 ) 158{ 159 if ((Ascii >= 0x20) && (Ascii <= 0x7f)) { 160 return TRUE; 161 } 162 return FALSE; 163} 164 165BOOLEAN 166IsValidEfiCntlChar ( 167 IN CHAR16 c 168 ) 169{ 170 if (c == CHAR_NULL || c == CHAR_BACKSPACE || c == CHAR_LINEFEED || c == CHAR_CARRIAGE_RETURN) { 171 return TRUE; 172 } 173 return FALSE; 174} 175 176