1 /*++ 2 3 Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR> 4 This program and the accompanying materials 5 are licensed and made available under the terms and conditions of the BSD License 6 which accompanies this distribution. The full text of the license may be found at 7 http://opensource.org/licenses/bsd-license.php 8 9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 12 13 Module Name: 14 15 Console.c 16 17 Abstract: 18 19 UEFI library functions. 20 21 --*/ 22 23 #include "EdkIIGlueUefi.h" 24 25 typedef struct { 26 CHAR16 WChar; 27 UINT32 Width; 28 } UNICODE_WIDTH_ENTRY; 29 30 UNICODE_WIDTH_ENTRY mUnicodeWidthTable[] = { 31 // 32 // General script area 33 // 34 {(CHAR16)0x1FFF, 1}, 35 /* 36 * Merge the blocks and replace them with the above entry as they fall to 37 * the same category and they are all narrow glyph. This will reduce search 38 * time and table size. The merge will omit the reserved code. 39 * 40 * Remove the above item if below is un-commented. 41 * 42 {(CHAR16)0x007F, 1}, // C0 controls and basic Latin. 0x0000-0x007F 43 {(CHAR16)0x00FF, 1}, // C1 controls and Latin-1 support. 0x0080-0x00FF 44 {(CHAR16)0x017F, 1}, // Latin extended-A. 0x0100-0x017F 45 {(CHAR16)0x024F, 1}, // Latin extended-B. 0x0180-0x024F 46 {(CHAR16)0x02AF, 1}, // IPA extensions. 0x0250-0x02AF 47 {(CHAR16)0x02FF, 1}, // Spacing modifier letters. 0x02B0-0x02FF 48 {(CHAR16)0x036F, 1}, // Combining diacritical marks. 0x0300-0x036F 49 {(CHAR16)0x03FF, 1}, // Greek. 0x0370-0x03FF 50 {(CHAR16)0x04FF, 1}, // Cyrillic. 0x0400-0x04FF 51 {(CHAR16)0x052F, 0}, // Unassigned. As Armenian in ver3.0. 0x0500-0x052F 52 {(CHAR16)0x058F, 1}, // Armenian. 0x0530-0x058F 53 {(CHAR16)0x05FF, 1}, // Hebrew. 0x0590-0x05FF 54 {(CHAR16)0x06FF, 1}, // Arabic. 0x0600-0x06FF 55 {(CHAR16)0x08FF, 0}, // Unassigned. 0x0700-0x08FF 56 {(CHAR16)0x097F, 1}, // Devanagari. 0x0900-0x097F 57 {(CHAR16)0x09FF, 1}, // Bengali. 0x0980-0x09FF 58 {(CHAR16)0x0A7F, 1}, // Gurmukhi. 0x0A00-0x0A7F 59 {(CHAR16)0x0AFF, 1}, // Gujarati. 0x0A80-0x0AFF 60 {(CHAR16)0x0B7F, 1}, // Oriya. 0x0B00-0x0B7F 61 {(CHAR16)0x0BFF, 1}, // Tamil. (See page 7-92). 0x0B80-0x0BFF 62 {(CHAR16)0x0C7F, 1}, // Telugu. 0x0C00-0x0C7F 63 {(CHAR16)0x0CFF, 1}, // Kannada. (See page 7-100). 0x0C80-0x0CFF 64 {(CHAR16)0x0D7F, 1}, // Malayalam (See page 7-104). 0x0D00-0x0D7F 65 {(CHAR16)0x0DFF, 0}, // Unassigned. 0x0D80-0x0DFF 66 {(CHAR16)0x0E7F, 1}, // Thai. 0x0E00-0x0E7F 67 {(CHAR16)0x0EFF, 1}, // Lao. 0x0E80-0x0EFF 68 {(CHAR16)0x0FBF, 1}, // Tibetan. 0x0F00-0x0FBF 69 {(CHAR16)0x109F, 0}, // Unassigned. 0x0FC0-0x109F 70 {(CHAR16)0x10FF, 1}, // Georgian. 0x10A0-0x10FF 71 {(CHAR16)0x11FF, 1}, // Hangul Jamo. 0x1100-0x11FF 72 {(CHAR16)0x1DFF, 0}, // Unassigned. 0x1200-0x1DFF 73 {(CHAR16)0x1EFF, 1}, // Latin extended additional. 0x1E00-0x1EFF 74 {(CHAR16)0x1FFF, 1}, // Greek extended. 0x1F00-0x1FFF 75 * 76 */ 77 78 // 79 // Symbol area 80 // 81 {(CHAR16)0x2FFF, 1}, 82 /* 83 * Merge the blocks and replace them with the above entry as they fall to 84 * the same category and they are all narrow glyph. This will reduce search 85 * time and table size. The merge will omit the reserved code. 86 * 87 * Remove the above item if below is un-commented. 88 * 89 {(CHAR16)0x206F, 1}, // General punctuation. (See page7-154). 0x200-0x206F 90 {(CHAR16)0x209F, 1}, // Superscripts and subscripts. 0x2070-0x209F 91 {(CHAR16)0x20CF, 1}, // Currency symbols. 0x20A0-0x20CF 92 {(CHAR16)0x20FF, 1}, // Combining diacritical marks for symbols. 0x20D0-0x20FF 93 {(CHAR16)0x214F, 1}, // Letterlike sympbols. 0x2100-0x214F 94 {(CHAR16)0x218F, 1}, // Number forms. 0x2150-0x218F 95 {(CHAR16)0x21FF, 1}, // Arrows. 0x2190-0x21FF 96 {(CHAR16)0x22FF, 1}, // Mathematical operators. 0x2200-0x22FF 97 {(CHAR16)0x23FF, 1}, // Miscellaneous technical. 0x2300-0x23FF 98 {(CHAR16)0x243F, 1}, // Control pictures. 0x2400-0x243F 99 {(CHAR16)0x245F, 1}, // Optical character recognition. 0x2440-0x245F 100 {(CHAR16)0x24FF, 1}, // Enclosed alphanumerics. 0x2460-0x24FF 101 {(CHAR16)0x257F, 1}, // Box drawing. 0x2500-0x257F 102 {(CHAR16)0x259F, 1}, // Block elements. 0x2580-0x259F 103 {(CHAR16)0x25FF, 1}, // Geometric shapes. 0x25A0-0x25FF 104 {(CHAR16)0x26FF, 1}, // Miscellaneous symbols. 0x2600-0x26FF 105 {(CHAR16)0x27BF, 1}, // Dingbats. 0x2700-0x27BF 106 {(CHAR16)0x2FFF, 0}, // Reserved. 0x27C0-0x2FFF 107 * 108 */ 109 110 // 111 // CJK phonetics and symbol area 112 // 113 {(CHAR16)0x33FF, 2}, 114 /* 115 * Merge the blocks and replace them with the above entry as they fall to 116 * the same category and they are all wide glyph. This will reduce search 117 * time and table size. The merge will omit the reserved code. 118 * 119 * Remove the above item if below is un-commented. 120 * 121 {(CHAR16)0x303F, 2}, // CJK symbols and punctuation. 0x3000-0x303F 122 {(CHAR16)0x309F, 2}, // Hiragana. 0x3040-0x309F 123 {(CHAR16)0x30FF, 2}, // Katakana. 0x30A0-0x30FF 124 {(CHAR16)0x312F, 2}, // Bopomofo. 0x3100-0x312F 125 {(CHAR16)0x318F, 2}, // Hangul compatibility jamo. 0x3130-0x318F 126 {(CHAR16)0x319F, 2}, // Kanbun. 0x3190-0x319F 127 {(CHAR16)0x31FF, 0}, // Reserved. As Bopomofo extended in ver3.0. 0x31A0-0x31FF 128 {(CHAR16)0x32FF, 2}, // Enclosed CJK letters and months. 0x3200-0x32FF 129 {(CHAR16)0x33FF, 2}, // CJK compatibility. 0x3300-0x33FF 130 * 131 */ 132 133 // 134 // CJK ideograph area 135 // 136 {(CHAR16)0x9FFF, 2}, 137 /* 138 * Merge the blocks and replace them with the above entry as they fall to 139 * the same category and they are all wide glyph. This will reduce search 140 * time and table size. The merge will omit the reserved code. 141 * 142 * Remove the above item if below is un-commented. 143 * 144 {(CHAR16)0x4DFF, 0}, // Reserved. 0x3400-0x4DBF as CJK unified ideographs 145 // extension A in ver3.0. 0x3400-0x4DFF 146 {(CHAR16)0x9FFF, 2}, // CJK unified ideographs. 0x4E00-0x9FFF 147 * 148 */ 149 150 // 151 // Reserved 152 // 153 {(CHAR16)0xABFF, 0}, // Reserved. 0xA000-0xA490 as Yi syllables. 0xA490-0xA4D0 154 // as Yi radicals in ver3.0. 0xA000-0xABFF 155 // 156 // Hangul syllables 157 // 158 {(CHAR16)0xD7FF, 2}, 159 /* 160 * Merge the blocks and replace them with the above entry as they fall to 161 * the same category and they are all wide glyph. This will reduce search 162 * time and table size. The merge will omit the reserved code. 163 * 164 * Remove the above item if below is un-commented. 165 * 166 {(CHAR16)0xD7A3, 2}, // Hangul syllables. 0xAC00-0xD7A3 167 {(CHAR16)0xD7FF, 0}, // Reserved. 0xD7A3-0xD7FF 168 * 169 */ 170 171 // 172 // Surrogates area 173 // 174 {(CHAR16)0xDFFF, 0}, // Surrogates, not used now. 0xD800-0xDFFF 175 176 // 177 // Private use area 178 // 179 {(CHAR16)0xF8FF, 0}, // Private use area. 0xE000-0xF8FF 180 181 // 182 // Compatibility area and specials 183 // 184 {(CHAR16)0xFAFF, 2}, // CJK compatibility ideographs. 0xF900-0xFAFF 185 {(CHAR16)0xFB4F, 1}, // Alphabetic presentation forms. 0xFB00-0xFB4F 186 {(CHAR16)0xFDFF, 1}, // Arabic presentation forms-A. 0xFB50-0xFDFF 187 {(CHAR16)0xFE1F, 0}, // Reserved. As variation selectors in ver3.0. 0xFE00-0xFE1F 188 {(CHAR16)0xFE2F, 1}, // Combining half marks. 0xFE20-0xFE2F 189 {(CHAR16)0xFE4F, 2}, // CJK compatibility forms. 0xFE30-0xFE4F 190 {(CHAR16)0xFE6F, 1}, // Small Form Variants. 0xFE50-0xFE6F 191 {(CHAR16)0xFEFF, 1}, // Arabic presentation forms-B. 0xFE70-0xFEFF 192 {(CHAR16)0xFFEF, 1}, // Half width and full width forms. 0xFF00-0xFFEF 193 {(CHAR16)0xFFFF, 0}, // Speicials. 0xFFF0-0xFFFF 194 }; 195 196 /** 197 This function computes and returns the width of the Unicode character 198 specified by UnicodeChar. 199 200 @param UnicodeChar A Unicode character. 201 202 @retval 0 The width if UnicodeChar could not be determined. 203 @retval 1 UnicodeChar is a narrow glyph. 204 @retval 2 UnicodeChar is a wide glyph. 205 206 **/ 207 UINTN 208 EFIAPI 209 GlueGetGlyphWidth ( 210 IN CHAR16 UnicodeChar 211 ) 212 { 213 UINTN Index; 214 UINTN Low; 215 UINTN High; 216 UNICODE_WIDTH_ENTRY *Item; 217 218 Item = NULL; 219 Low = 0; 220 High = (sizeof (mUnicodeWidthTable)) / (sizeof (UNICODE_WIDTH_ENTRY)) - 1; 221 while (Low <= High) { 222 Index = (Low + High) >> 1; 223 Item = &(mUnicodeWidthTable[Index]); 224 if (Index == 0) { 225 if (UnicodeChar <= Item->WChar) { 226 break; 227 } 228 229 return 0; 230 } 231 232 if (UnicodeChar > Item->WChar) { 233 Low = Index + 1; 234 } else if (UnicodeChar <= mUnicodeWidthTable[Index - 1].WChar) { 235 High = Index - 1; 236 } else { 237 // 238 // Index - 1 < UnicodeChar <= Index. Found 239 // 240 break; 241 } 242 } 243 244 if (Low <= High) { 245 return Item->Width; 246 } 247 248 return 0; 249 } 250 251 /** 252 This function computes and returns the display length of 253 the Null-terminated Unicode string specified by String. 254 If String is NULL, then 0 is returned. 255 If any of the widths of the Unicode characters in String 256 can not be determined, then 0 is returned. 257 258 @param String A pointer to a Null-terminated Unicode string. 259 260 @return The display length of the Null-terminated Unicode string specified by String. 261 262 **/ 263 UINTN 264 EFIAPI 265 UnicodeStringDisplayLength ( 266 IN CONST CHAR16 *String 267 ) 268 { 269 UINTN Length; 270 UINTN Width; 271 272 if (String == NULL) { 273 return 0; 274 } 275 276 Length = 0; 277 while (*String != 0) { 278 Width = GetGlyphWidth (*String); 279 if (Width == 0) { 280 return 0; 281 } 282 283 Length += Width; 284 String++; 285 } 286 287 return Length; 288 } 289
