[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / UefiLib / Console.c

/*++\r
\r
Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials                          \r
are licensed and made available under the terms and conditions of the BSD License         \r
which accompanies this distribution.  The full text of the license may be found at        \r
http://opensource.org/licenses/bsd-license.php                                            \r
                                                                                          \r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     \r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.              \r
\r
\r
Module Name:\r
\r
  Console.c\r
  \r
Abstract: \r
\r
  UEFI library functions.\r
\r
--*/\r
\r
#include "EdkIIGlueUefi.h"\r
\r
typedef struct {\r
  CHAR16  WChar;\r
  UINT32  Width;\r
} UNICODE_WIDTH_ENTRY;\r
\r
UNICODE_WIDTH_ENTRY mUnicodeWidthTable[] = {\r
  //\r
  // General script area\r
  //\r
  {(CHAR16)0x1FFF,  1},\r
  /*\r
   * Merge the blocks and replace them with the above entry as they fall to \r
   * the same category and they are all narrow glyph. This will reduce search\r
   * time and table size. The merge will omit the reserved code.\r
   *\r
   * Remove the above item if below is un-commented.\r
   *\r
  {(CHAR16)0x007F,  1},       // C0 controls and basic Latin. 0x0000-0x007F\r
  {(CHAR16)0x00FF,  1},       // C1 controls and Latin-1 support. 0x0080-0x00FF\r
  {(CHAR16)0x017F,  1},       // Latin extended-A. 0x0100-0x017F\r
  {(CHAR16)0x024F,  1},       // Latin extended-B. 0x0180-0x024F\r
  {(CHAR16)0x02AF,  1},       // IPA extensions. 0x0250-0x02AF\r
  {(CHAR16)0x02FF,  1},       // Spacing modifier letters. 0x02B0-0x02FF\r
  {(CHAR16)0x036F,  1},       // Combining diacritical marks. 0x0300-0x036F\r
  {(CHAR16)0x03FF,  1},       // Greek. 0x0370-0x03FF\r
  {(CHAR16)0x04FF,  1},       // Cyrillic. 0x0400-0x04FF\r
  {(CHAR16)0x052F,  0},       // Unassigned. As Armenian in ver3.0. 0x0500-0x052F\r
  {(CHAR16)0x058F,  1},       // Armenian. 0x0530-0x058F\r
  {(CHAR16)0x05FF,  1},       // Hebrew. 0x0590-0x05FF\r
  {(CHAR16)0x06FF,  1},       // Arabic. 0x0600-0x06FF\r
  {(CHAR16)0x08FF,  0},       // Unassigned. 0x0700-0x08FF\r
  {(CHAR16)0x097F,  1},       // Devanagari. 0x0900-0x097F\r
  {(CHAR16)0x09FF,  1},       // Bengali. 0x0980-0x09FF\r
  {(CHAR16)0x0A7F,  1},       // Gurmukhi. 0x0A00-0x0A7F\r
  {(CHAR16)0x0AFF,  1},       // Gujarati. 0x0A80-0x0AFF\r
  {(CHAR16)0x0B7F,  1},       // Oriya. 0x0B00-0x0B7F\r
  {(CHAR16)0x0BFF,  1},       // Tamil. (See page 7-92). 0x0B80-0x0BFF\r
  {(CHAR16)0x0C7F,  1},       // Telugu. 0x0C00-0x0C7F\r
  {(CHAR16)0x0CFF,  1},       // Kannada. (See page 7-100). 0x0C80-0x0CFF\r
  {(CHAR16)0x0D7F,  1},       // Malayalam (See page 7-104). 0x0D00-0x0D7F\r
  {(CHAR16)0x0DFF,  0},       // Unassigned. 0x0D80-0x0DFF\r
  {(CHAR16)0x0E7F,  1},       // Thai. 0x0E00-0x0E7F\r
  {(CHAR16)0x0EFF,  1},       // Lao. 0x0E80-0x0EFF\r
  {(CHAR16)0x0FBF,  1},       // Tibetan. 0x0F00-0x0FBF\r
  {(CHAR16)0x109F,  0},       // Unassigned. 0x0FC0-0x109F\r
  {(CHAR16)0x10FF,  1},       // Georgian. 0x10A0-0x10FF\r
  {(CHAR16)0x11FF,  1},       // Hangul Jamo. 0x1100-0x11FF\r
  {(CHAR16)0x1DFF,  0},       // Unassigned. 0x1200-0x1DFF\r
  {(CHAR16)0x1EFF,  1},       // Latin extended additional. 0x1E00-0x1EFF\r
  {(CHAR16)0x1FFF,  1},       // Greek extended. 0x1F00-0x1FFF\r
  *\r
  */\r
\r
  //\r
  // Symbol area\r
  //\r
  {(CHAR16)0x2FFF,  1},\r
  /*\r
   * Merge the blocks and replace them with the above entry as they fall to \r
   * the same category and they are all narrow glyph. This will reduce search\r
   * time and table size. The merge will omit the reserved code.\r
   *\r
   * Remove the above item if below is un-commented.\r
   *\r
  {(CHAR16)0x206F,  1},       // General punctuation. (See page7-154). 0x200-0x206F\r
  {(CHAR16)0x209F,  1},       // Superscripts and subscripts. 0x2070-0x209F\r
  {(CHAR16)0x20CF,  1},       // Currency symbols. 0x20A0-0x20CF\r
  {(CHAR16)0x20FF,  1},       // Combining diacritical marks for symbols. 0x20D0-0x20FF\r
  {(CHAR16)0x214F,  1},       // Letterlike sympbols. 0x2100-0x214F\r
  {(CHAR16)0x218F,  1},       // Number forms. 0x2150-0x218F\r
  {(CHAR16)0x21FF,  1},       // Arrows. 0x2190-0x21FF\r
  {(CHAR16)0x22FF,  1},       // Mathematical operators. 0x2200-0x22FF\r
  {(CHAR16)0x23FF,  1},       // Miscellaneous technical. 0x2300-0x23FF\r
  {(CHAR16)0x243F,  1},       // Control pictures. 0x2400-0x243F\r
  {(CHAR16)0x245F,  1},       // Optical character recognition. 0x2440-0x245F\r
  {(CHAR16)0x24FF,  1},       // Enclosed alphanumerics. 0x2460-0x24FF\r
  {(CHAR16)0x257F,  1},       // Box drawing. 0x2500-0x257F\r
  {(CHAR16)0x259F,  1},       // Block elements. 0x2580-0x259F\r
  {(CHAR16)0x25FF,  1},       // Geometric shapes. 0x25A0-0x25FF\r
  {(CHAR16)0x26FF,  1},       // Miscellaneous symbols. 0x2600-0x26FF\r
  {(CHAR16)0x27BF,  1},       // Dingbats. 0x2700-0x27BF\r
  {(CHAR16)0x2FFF,  0},       // Reserved. 0x27C0-0x2FFF\r
  *\r
  */\r
\r
  //\r
  // CJK phonetics and symbol area\r
  //\r
  {(CHAR16)0x33FF,  2},\r
  /*\r
   * Merge the blocks and replace them with the above entry as they fall to \r
   * the same category and they are all wide glyph. This will reduce search\r
   * time and table size. The merge will omit the reserved code.\r
   *\r
   * Remove the above item if below is un-commented.\r
   *\r
  {(CHAR16)0x303F,  2},       // CJK symbols and punctuation. 0x3000-0x303F\r
  {(CHAR16)0x309F,  2},       // Hiragana. 0x3040-0x309F\r
  {(CHAR16)0x30FF,  2},       // Katakana. 0x30A0-0x30FF\r
  {(CHAR16)0x312F,  2},       // Bopomofo. 0x3100-0x312F\r
  {(CHAR16)0x318F,  2},       // Hangul compatibility jamo. 0x3130-0x318F\r
  {(CHAR16)0x319F,  2},       // Kanbun. 0x3190-0x319F\r
  {(CHAR16)0x31FF,  0},       // Reserved. As Bopomofo extended in ver3.0. 0x31A0-0x31FF\r
  {(CHAR16)0x32FF,  2},       // Enclosed CJK letters and months. 0x3200-0x32FF\r
  {(CHAR16)0x33FF,  2},       // CJK compatibility. 0x3300-0x33FF\r
  *\r
  */\r
\r
  //\r
  // CJK ideograph area\r
  //\r
  {(CHAR16)0x9FFF,  2},\r
  /*\r
   * Merge the blocks and replace them with the above entry as they fall to \r
   * the same category and they are all wide glyph. This will reduce search\r
   * time and table size. The merge will omit the reserved code.\r
   *\r
   * Remove the above item if below is un-commented.\r
   *\r
  {(CHAR16)0x4DFF,  0},       // Reserved. 0x3400-0x4DBF as CJK unified ideographs \r
                      // extension A in ver3.0. 0x3400-0x4DFF\r
  {(CHAR16)0x9FFF,  2},       // CJK unified ideographs. 0x4E00-0x9FFF\r
  *\r
  */\r
\r
  //\r
  // Reserved\r
  //\r
  {(CHAR16)0xABFF,  0},       // Reserved. 0xA000-0xA490 as Yi syllables. 0xA490-0xA4D0\r
  // as Yi radicals in ver3.0. 0xA000-0xABFF\r
  //\r
  // Hangul syllables\r
  //\r
  {(CHAR16)0xD7FF,  2},\r
  /*\r
   * Merge the blocks and replace them with the above entry as they fall to \r
   * the same category and they are all wide glyph. This will reduce search\r
   * time and table size. The merge will omit the reserved code.\r
   *\r
   * Remove the above item if below is un-commented.\r
   *\r
  {(CHAR16)0xD7A3,  2},       // Hangul syllables. 0xAC00-0xD7A3\r
  {(CHAR16)0xD7FF,  0},       // Reserved. 0xD7A3-0xD7FF\r
  *\r
  */\r
\r
  //\r
  // Surrogates area\r
  //\r
  {(CHAR16)0xDFFF,  0},       // Surrogates, not used now. 0xD800-0xDFFF\r
\r
  //\r
  // Private use area\r
  //\r
  {(CHAR16)0xF8FF,  0},       // Private use area. 0xE000-0xF8FF\r
\r
  //\r
  // Compatibility area and specials\r
  //\r
  {(CHAR16)0xFAFF,  2},       // CJK compatibility ideographs. 0xF900-0xFAFF\r
  {(CHAR16)0xFB4F,  1},       // Alphabetic presentation forms. 0xFB00-0xFB4F\r
  {(CHAR16)0xFDFF,  1},       // Arabic presentation forms-A. 0xFB50-0xFDFF\r
  {(CHAR16)0xFE1F,  0},       // Reserved. As variation selectors in ver3.0. 0xFE00-0xFE1F\r
  {(CHAR16)0xFE2F,  1},       // Combining half marks. 0xFE20-0xFE2F\r
  {(CHAR16)0xFE4F,  2},       // CJK compatibility forms. 0xFE30-0xFE4F\r
  {(CHAR16)0xFE6F,  1},       // Small Form Variants. 0xFE50-0xFE6F\r
  {(CHAR16)0xFEFF,  1},       // Arabic presentation forms-B. 0xFE70-0xFEFF\r
  {(CHAR16)0xFFEF,  1},       // Half width and full width forms. 0xFF00-0xFFEF\r
  {(CHAR16)0xFFFF,  0},       // Speicials. 0xFFF0-0xFFFF\r
};\r
\r
/**\r
  This function computes and returns the width of the Unicode character \r
  specified by UnicodeChar.\r
\r
  @param  UnicodeChar   A Unicode character.\r
\r
  @retval 0             The width if UnicodeChar could not be determined.\r
  @retval 1             UnicodeChar is a narrow glyph.\r
  @retval 2             UnicodeChar is a wide glyph.\r
\r
**/\r
UINTN\r
EFIAPI\r
GlueGetGlyphWidth (\r
  IN CHAR16  UnicodeChar\r
  )\r
{\r
  UINTN               Index;\r
  UINTN               Low;\r
  UINTN               High;\r
  UNICODE_WIDTH_ENTRY *Item;\r
\r
  Item  = NULL;\r
  Low   = 0;\r
  High  = (sizeof (mUnicodeWidthTable)) / (sizeof (UNICODE_WIDTH_ENTRY)) - 1;\r
  while (Low <= High) {\r
    Index = (Low + High) >> 1;\r
    Item  = &(mUnicodeWidthTable[Index]);\r
    if (Index == 0) {\r
      if (UnicodeChar <= Item->WChar) {\r
        break;\r
      }\r
\r
      return 0;\r
    }\r
\r
    if (UnicodeChar > Item->WChar) {\r
      Low = Index + 1;\r
    } else if (UnicodeChar <= mUnicodeWidthTable[Index - 1].WChar) {\r
      High = Index - 1;\r
    } else {\r
      //\r
      // Index - 1 < UnicodeChar <= Index. Found\r
      //\r
      break;\r
    }\r
  }\r
\r
  if (Low <= High) {\r
    return Item->Width;\r
  }\r
\r
  return 0;\r
}\r
\r
/**\r
  This function computes and returns the display length of\r
  the Null-terminated Unicode string specified by String.\r
  If String is NULL, then 0 is returned.\r
  If any of the widths of the Unicode characters in String\r
  can not be determined, then 0 is returned.\r
\r
  @param  String      A pointer to a Null-terminated Unicode string.\r
\r
  @return The display length of the Null-terminated Unicode string specified by String.\r
  \r
**/\r
UINTN\r
EFIAPI\r
UnicodeStringDisplayLength (\r
  IN CONST CHAR16  *String\r
  )\r
{\r
  UINTN      Length;\r
  UINTN      Width;\r
\r
  if (String == NULL) {\r
    return 0;\r
  }\r
\r
  Length = 0;\r
  while (*String != 0) {\r
    Width = GetGlyphWidth (*String);\r
    if (Width == 0) {\r
      return 0;\r
    }\r
\r
    Length += Width;\r
    String++;\r
  }\r
\r
  return Length;\r
}\r
Commit	Line	Data
3eb9473e	1	/*++\r
3eb9473e	2	\r
2c7e5c2f HT	3	Copyright (c) 2004 - 2006, Intel Corporation. All rights reserved.<BR>\r
2c7e5c2f HT	4	This program and the accompanying materials \r
3eb9473e	5	are licensed and made available under the terms and conditions of the BSD License \r
	6	which accompanies this distribution. The full text of the license may be found at \r
	7	http://opensource.org/licenses/bsd-license.php \r
	8	\r
	9	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
	10	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
	11	\r
	12	\r
	13	Module Name:\r
	14	\r
	15	Console.c\r
	16	\r
	17	Abstract: \r
	18	\r
	19	UEFI library functions.\r
	20	\r
	21	--*/\r
	22	\r
	23	#include "EdkIIGlueUefi.h"\r
	24	\r
	25	typedef struct {\r
	26	CHAR16 WChar;\r
	27	UINT32 Width;\r
	28	} UNICODE_WIDTH_ENTRY;\r
	29	\r
	30	UNICODE_WIDTH_ENTRY mUnicodeWidthTable[] = {\r
	31	//\r
	32	// General script area\r
	33	//\r
	34	{(CHAR16)0x1FFF, 1},\r
	35	/*\r
	36	* Merge the blocks and replace them with the above entry as they fall to \r
	37	* the same category and they are all narrow glyph. This will reduce search\r
	38	* time and table size. The merge will omit the reserved code.\r
	39	*\r
	40	* Remove the above item if below is un-commented.\r
	41	*\r
	42	{(CHAR16)0x007F, 1}, // C0 controls and basic Latin. 0x0000-0x007F\r
	43	{(CHAR16)0x00FF, 1}, // C1 controls and Latin-1 support. 0x0080-0x00FF\r
	44	{(CHAR16)0x017F, 1}, // Latin extended-A. 0x0100-0x017F\r
	45	{(CHAR16)0x024F, 1}, // Latin extended-B. 0x0180-0x024F\r
	46	{(CHAR16)0x02AF, 1}, // IPA extensions. 0x0250-0x02AF\r
	47	{(CHAR16)0x02FF, 1}, // Spacing modifier letters. 0x02B0-0x02FF\r
	48	{(CHAR16)0x036F, 1}, // Combining diacritical marks. 0x0300-0x036F\r
	49	{(CHAR16)0x03FF, 1}, // Greek. 0x0370-0x03FF\r
	50	{(CHAR16)0x04FF, 1}, // Cyrillic. 0x0400-0x04FF\r
	51	{(CHAR16)0x052F, 0}, // Unassigned. As Armenian in ver3.0. 0x0500-0x052F\r
	52	{(CHAR16)0x058F, 1}, // Armenian. 0x0530-0x058F\r
	53	{(CHAR16)0x05FF, 1}, // Hebrew. 0x0590-0x05FF\r
	54	{(CHAR16)0x06FF, 1}, // Arabic. 0x0600-0x06FF\r
	55	{(CHAR16)0x08FF, 0}, // Unassigned. 0x0700-0x08FF\r
	56	{(CHAR16)0x097F, 1}, // Devanagari. 0x0900-0x097F\r
	57	{(CHAR16)0x09FF, 1}, // Bengali. 0x0980-0x09FF\r
	58	{(CHAR16)0x0A7F, 1}, // Gurmukhi. 0x0A00-0x0A7F\r
	59	{(CHAR16)0x0AFF, 1}, // Gujarati. 0x0A80-0x0AFF\r
	60	{(CHAR16)0x0B7F, 1}, // Oriya. 0x0B00-0x0B7F\r
	61	{(CHAR16)0x0BFF, 1}, // Tamil. (See page 7-92). 0x0B80-0x0BFF\r
	62	{(CHAR16)0x0C7F, 1}, // Telugu. 0x0C00-0x0C7F\r
	63	{(CHAR16)0x0CFF, 1}, // Kannada. (See page 7-100). 0x0C80-0x0CFF\r
	64	{(CHAR16)0x0D7F, 1}, // Malayalam (See page 7-104). 0x0D00-0x0D7F\r
	65	{(CHAR16)0x0DFF, 0}, // Unassigned. 0x0D80-0x0DFF\r
	66	{(CHAR16)0x0E7F, 1}, // Thai. 0x0E00-0x0E7F\r
	67	{(CHAR16)0x0EFF, 1}, // Lao. 0x0E80-0x0EFF\r
	68	{(CHAR16)0x0FBF, 1}, // Tibetan. 0x0F00-0x0FBF\r
69	{(CHAR16)0x109F, 0}, // Unassigned. 0x0FC0-0x109F\r
70	{(CHAR16)0x10FF, 1}, // Georgian. 0x10A0-0x10FF\r
71	{(CHAR16)0x11FF, 1}, // Hangul Jamo. 0x1100-0x11FF\r
72	{(CHAR16)0x1DFF, 0}, // Unassigned. 0x1200-0x1DFF\r
73	{(CHAR16)0x1EFF, 1}, // Latin extended additional. 0x1E00-0x1EFF\r
74	{(CHAR16)0x1FFF, 1}, // Greek extended. 0x1F00-0x1FFF\r
75	*\r
76	*/\r
77	\r
78	//\r
79	// Symbol area\r
80	//\r
81	{(CHAR16)0x2FFF, 1},\r
82	/*\r
83	* Merge the blocks and replace them with the above entry as they fall to \r
84	* the same category and they are all narrow glyph. This will reduce search\r
85	* time and table size. The merge will omit the reserved code.\r
86	*\r
87	* Remove the above item if below is un-commented.\r
88	*\r
89	{(CHAR16)0x206F, 1}, // General punctuation. (See page7-154). 0x200-0x206F\r
90	{(CHAR16)0x209F, 1}, // Superscripts and subscripts. 0x2070-0x209F\r
91	{(CHAR16)0x20CF, 1}, // Currency symbols. 0x20A0-0x20CF\r
92	{(CHAR16)0x20FF, 1}, // Combining diacritical marks for symbols. 0x20D0-0x20FF\r
93	{(CHAR16)0x214F, 1}, // Letterlike sympbols. 0x2100-0x214F\r
94	{(CHAR16)0x218F, 1}, // Number forms. 0x2150-0x218F\r
95	{(CHAR16)0x21FF, 1}, // Arrows. 0x2190-0x21FF\r
96	{(CHAR16)0x22FF, 1}, // Mathematical operators. 0x2200-0x22FF\r
97	{(CHAR16)0x23FF, 1}, // Miscellaneous technical. 0x2300-0x23FF\r
98	{(CHAR16)0x243F, 1}, // Control pictures. 0x2400-0x243F\r
99	{(CHAR16)0x245F, 1}, // Optical character recognition. 0x2440-0x245F\r
100	{(CHAR16)0x24FF, 1}, // Enclosed alphanumerics. 0x2460-0x24FF\r
101	{(CHAR16)0x257F, 1}, // Box drawing. 0x2500-0x257F\r
102	{(CHAR16)0x259F, 1}, // Block elements. 0x2580-0x259F\r
103	{(CHAR16)0x25FF, 1}, // Geometric shapes. 0x25A0-0x25FF\r
104	{(CHAR16)0x26FF, 1}, // Miscellaneous symbols. 0x2600-0x26FF\r
105	{(CHAR16)0x27BF, 1}, // Dingbats. 0x2700-0x27BF\r
106	{(CHAR16)0x2FFF, 0}, // Reserved. 0x27C0-0x2FFF\r
107	*\r
108	*/\r
109	\r
110	//\r
111	// CJK phonetics and symbol area\r
112	//\r
113	{(CHAR16)0x33FF, 2},\r
114	/*\r
115	* Merge the blocks and replace them with the above entry as they fall to \r
116	* the same category and they are all wide glyph. This will reduce search\r
117	* time and table size. The merge will omit the reserved code.\r
118	*\r
119	* Remove the above item if below is un-commented.\r
120	*\r
121	{(CHAR16)0x303F, 2}, // CJK symbols and punctuation. 0x3000-0x303F\r
122	{(CHAR16)0x309F, 2}, // Hiragana. 0x3040-0x309F\r
123	{(CHAR16)0x30FF, 2}, // Katakana. 0x30A0-0x30FF\r
124	{(CHAR16)0x312F, 2}, // Bopomofo. 0x3100-0x312F\r
125	{(CHAR16)0x318F, 2}, // Hangul compatibility jamo. 0x3130-0x318F\r
126	{(CHAR16)0x319F, 2}, // Kanbun. 0x3190-0x319F\r
127	{(CHAR16)0x31FF, 0}, // Reserved. As Bopomofo extended in ver3.0. 0x31A0-0x31FF\r
128	{(CHAR16)0x32FF, 2}, // Enclosed CJK letters and months. 0x3200-0x32FF\r
129	{(CHAR16)0x33FF, 2}, // CJK compatibility. 0x3300-0x33FF\r
130	*\r
131	*/\r
132	\r
133	//\r
134	// CJK ideograph area\r
135	//\r
136	{(CHAR16)0x9FFF, 2},\r
137	/*\r
138	* Merge the blocks and replace them with the above entry as they fall to \r
139	* the same category and they are all wide glyph. This will reduce search\r
140	* time and table size. The merge will omit the reserved code.\r
141	*\r
142	* Remove the above item if below is un-commented.\r
143	*\r
144	{(CHAR16)0x4DFF, 0}, // Reserved. 0x3400-0x4DBF as CJK unified ideographs \r
145	// extension A in ver3.0. 0x3400-0x4DFF\r
146	{(CHAR16)0x9FFF, 2}, // CJK unified ideographs. 0x4E00-0x9FFF\r
147	*\r
148	*/\r
149	\r
150	//\r
151	// Reserved\r
152	//\r
153	{(CHAR16)0xABFF, 0}, // Reserved. 0xA000-0xA490 as Yi syllables. 0xA490-0xA4D0\r
154	// as Yi radicals in ver3.0. 0xA000-0xABFF\r
155	//\r
156	// Hangul syllables\r
157	//\r
158	{(CHAR16)0xD7FF, 2},\r
159	/*\r
160	* Merge the blocks and replace them with the above entry as they fall to \r
161	* the same category and they are all wide glyph. This will reduce search\r
162	* time and table size. The merge will omit the reserved code.\r
163	*\r
164	* Remove the above item if below is un-commented.\r
165	*\r
166	{(CHAR16)0xD7A3, 2}, // Hangul syllables. 0xAC00-0xD7A3\r
167	{(CHAR16)0xD7FF, 0}, // Reserved. 0xD7A3-0xD7FF\r
168	*\r
169	*/\r
170	\r
171	//\r
172	// Surrogates area\r
173	//\r
174	{(CHAR16)0xDFFF, 0}, // Surrogates, not used now. 0xD800-0xDFFF\r
175	\r
176	//\r
177	// Private use area\r
178	//\r
179	{(CHAR16)0xF8FF, 0}, // Private use area. 0xE000-0xF8FF\r
180	\r
181	//\r
182	// Compatibility area and specials\r
183	//\r
184	{(CHAR16)0xFAFF, 2}, // CJK compatibility ideographs. 0xF900-0xFAFF\r
185	{(CHAR16)0xFB4F, 1}, // Alphabetic presentation forms. 0xFB00-0xFB4F\r
186	{(CHAR16)0xFDFF, 1}, // Arabic presentation forms-A. 0xFB50-0xFDFF\r
187	{(CHAR16)0xFE1F, 0}, // Reserved. As variation selectors in ver3.0. 0xFE00-0xFE1F\r
188	{(CHAR16)0xFE2F, 1}, // Combining half marks. 0xFE20-0xFE2F\r
189	{(CHAR16)0xFE4F, 2}, // CJK compatibility forms. 0xFE30-0xFE4F\r
190	{(CHAR16)0xFE6F, 1}, // Small Form Variants. 0xFE50-0xFE6F\r
191	{(CHAR16)0xFEFF, 1}, // Arabic presentation forms-B. 0xFE70-0xFEFF\r
192	{(CHAR16)0xFFEF, 1}, // Half width and full width forms. 0xFF00-0xFFEF\r
193	{(CHAR16)0xFFFF, 0}, // Speicials. 0xFFF0-0xFFFF\r
194	};\r
195	\r
196	/**\r
197	This function computes and returns the width of the Unicode character \r
198	specified by UnicodeChar.\r
199	\r
200	@param UnicodeChar A Unicode character.\r
201	\r
202	@retval 0 The width if UnicodeChar could not be determined.\r
203	@retval 1 UnicodeChar is a narrow glyph.\r
204	@retval 2 UnicodeChar is a wide glyph.\r
205	\r
206	**/\r
207	UINTN\r
208	EFIAPI\r
209	GlueGetGlyphWidth (\r
210	IN CHAR16 UnicodeChar\r
211	)\r
212	{\r
213	UINTN Index;\r
214	UINTN Low;\r
215	UINTN High;\r
216	UNICODE_WIDTH_ENTRY *Item;\r
217	\r
218	Item = NULL;\r
219	Low = 0;\r
220	High = (sizeof (mUnicodeWidthTable)) / (sizeof (UNICODE_WIDTH_ENTRY)) - 1;\r
221	while (Low <= High) {\r
222	Index = (Low + High) >> 1;\r
223	Item = &(mUnicodeWidthTable[Index]);\r
224	if (Index == 0) {\r
225	if (UnicodeChar <= Item->WChar) {\r
226	break;\r
227	}\r
228	\r
229	return 0;\r
230	}\r
231	\r
232	if (UnicodeChar > Item->WChar) {\r
233	Low = Index + 1;\r
234	} else if (UnicodeChar <= mUnicodeWidthTable[Index - 1].WChar) {\r
235	High = Index - 1;\r
236	} else {\r
237	//\r
238	// Index - 1 < UnicodeChar <= Index. Found\r
239	//\r
240	break;\r
241	}\r
242	}\r
243	\r
244	if (Low <= High) {\r
245	return Item->Width;\r
246	}\r
247	\r
248	return 0;\r
249	}\r
250	\r
251	/**\r
252	This function computes and returns the display length of\r
253	the Null-terminated Unicode string specified by String.\r
254	If String is NULL, then 0 is returned.\r
255	If any of the widths of the Unicode characters in String\r
256	can not be determined, then 0 is returned.\r
257	\r
258	@param String A pointer to a Null-terminated Unicode string.\r
259	\r
260	@return The display length of the Null-terminated Unicode string specified by String.\r
261	\r
262	**/\r
263	UINTN\r
264	EFIAPI\r
265	UnicodeStringDisplayLength (\r
266	IN CONST CHAR16 *String\r
267	)\r
268	{\r
269	UINTN Length;\r
270	UINTN Width;\r
271	\r
272	if (String == NULL) {\r
273	return 0;\r
274	}\r
275	\r
276	Length = 0;\r
277	while (*String != 0) {\r
278	Width = GetGlyphWidth (*String);\r
279	if (Width == 0) {\r
280	return 0;\r
281	}\r
282	\r
283	Length += Width;\r
284	String++;\r
285	}\r
286	\r
287	return Length;\r
288	}\r