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878ddf1f | 1 | /** @file\r |
2 | Print Library worker functions.\r | |
3 | \r | |
4 | Copyright (c) 2006, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | Module Name: PrintLibInternal.c\r | |
14 | \r | |
15 | **/\r | |
16 | \r | |
17 | #include "PrintLibInternal.h"\r | |
18 | \r | |
19 | static CONST CHAR8 mHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r | |
20 | \r | |
3f9f540d | 21 | \r |
22 | /**\r | |
23 | Internal function that places the character into the Buffer.\r | |
24 | \r | |
25 | Internal function that places ASCII or Unicode character into the Buffer.\r | |
26 | \r | |
27 | @param Buffer Buffer to place the Unicode or ASCII string.\r | |
28 | @param Length Count of character to be placed into Buffer.\r | |
29 | @param Character Character to be placed into Buffer.\r | |
30 | @param Increment Character increment in Buffer.\r | |
31 | \r | |
32 | @return Number of characters printed.\r | |
33 | \r | |
34 | **/\r | |
878ddf1f | 35 | CHAR8 *\r |
36 | BasePrintLibFillBuffer (\r | |
37 | CHAR8 *Buffer,\r | |
38 | INTN Length,\r | |
39 | UINTN Character,\r | |
40 | INTN Increment\r | |
41 | )\r | |
42 | {\r | |
43 | INTN Index;\r | |
44 | \r | |
45 | for (Index = 0; Index < Length; Index++) {\r | |
46 | *Buffer = (CHAR8) Character;\r | |
47 | *(Buffer + 1) = (CHAR8) (Character >> 8);\r | |
48 | Buffer += Increment;\r | |
49 | }\r | |
50 | return Buffer;\r | |
51 | }\r | |
52 | \r | |
53 | /**\r | |
3f9f540d | 54 | Internal function that convert a decimal number to a string in Buffer.\r |
878ddf1f | 55 | \r |
3f9f540d | 56 | Print worker function that convert a decimal number to a string in Buffer.\r |
57 | \r | |
58 | @param Buffer Location to place the Unicode or ASCII string of Value.\r | |
59 | @param Value Value to convert to a Decimal or Hexidecimal string in Buffer.\r | |
60 | @param Radix Radix of the value\r | |
878ddf1f | 61 | \r |
62 | @return Number of characters printed.\r | |
63 | \r | |
64 | **/\r | |
65 | UINTN\r | |
66 | EFIAPI\r | |
67 | BasePrintLibValueToString (\r | |
68 | IN OUT CHAR8 *Buffer,\r | |
69 | IN INT64 Value,\r | |
70 | IN UINTN Radix\r | |
71 | )\r | |
72 | {\r | |
73 | UINTN Digits;\r | |
74 | UINT32 Remainder;\r | |
75 | \r | |
76 | //\r | |
77 | // Loop to convert one digit at a time in reverse order\r | |
78 | //\r | |
79 | *(Buffer++) = 0;\r | |
80 | Digits = 0;\r | |
81 | do {\r | |
82 | Value = (INT64)DivU64x32Remainder ((UINT64)Value, (UINT32)Radix, &Remainder);\r | |
83 | *(Buffer++) = mHexStr[Remainder];\r | |
84 | Digits++;\r | |
85 | } while (Value != 0);\r | |
86 | return Digits;\r | |
87 | }\r | |
88 | \r | |
3f9f540d | 89 | /**\r |
90 | Internal function that converts a decimal value to a Null-terminated string.\r | |
91 | \r | |
92 | Converts the decimal number specified by Value to a Null-terminated \r | |
93 | string specified by Buffer containing at most Width characters.\r | |
94 | If Width is 0 then a width of MAXIMUM_VALUE_CHARACTERS is assumed.\r | |
95 | The total number of characters placed in Buffer is returned.\r | |
96 | If the conversion contains more than Width characters, then only the first\r | |
97 | Width characters are returned, and the total number of characters \r | |
98 | required to perform the conversion is returned.\r | |
99 | Additional conversion parameters are specified in Flags. \r | |
100 | The Flags bit LEFT_JUSTIFY is always ignored.\r | |
101 | All conversions are left justified in Buffer.\r | |
102 | If Width is 0, PREFIX_ZERO is ignored in Flags.\r | |
103 | If COMMA_TYPE is set in Flags, then PREFIX_ZERO is ignored in Flags, and commas\r | |
104 | are inserted every 3rd digit starting from the right.\r | |
105 | If Value is < 0, then the fist character in Buffer is a '-'.\r | |
106 | If PREFIX_ZERO is set in Flags and PREFIX_ZERO is not being ignored, \r | |
107 | then Buffer is padded with '0' characters so the combination of the optional '-' \r | |
108 | sign character, '0' characters, digit characters for Value, and the Null-terminator\r | |
109 | add up to Width characters.\r | |
110 | \r | |
111 | If Buffer is NULL, then ASSERT().\r | |
112 | If unsupported bits are set in Flags, then ASSERT().\r | |
113 | If Width >= MAXIMUM_VALUE_CHARACTERS, then ASSERT()\r | |
114 | \r | |
115 | @param Buffer Pointer to the output buffer for the produced Null-terminated\r | |
116 | string.\r | |
117 | @param Flags The bitmask of flags that specify left justification, zero pad,\r | |
118 | and commas.\r | |
119 | @param Value The 64-bit signed value to convert to a string.\r | |
120 | @param Width The maximum number of characters to place in Buffer.\r | |
121 | @param Increment Character increment in Buffer.\r | |
122 | \r | |
123 | @return Total number of characters required to perform the conversion.\r | |
124 | \r | |
125 | **/\r | |
878ddf1f | 126 | UINTN\r |
127 | BasePrintLibConvertValueToString (\r | |
128 | IN OUT CHAR8 *Buffer,\r | |
129 | IN UINTN Flags,\r | |
130 | IN INT64 Value,\r | |
131 | IN UINTN Width,\r | |
132 | IN UINTN Increment\r | |
133 | )\r | |
134 | {\r | |
135 | CHAR8 *OriginalBuffer;\r | |
136 | CHAR8 ValueBuffer[MAXIMUM_VALUE_CHARACTERS];\r | |
137 | UINTN Count;\r | |
138 | UINTN Digits;\r | |
139 | UINTN Index;\r | |
140 | \r | |
8960cdeb | 141 | ASSERT (Buffer != NULL);\r |
142 | ASSERT (Width < MAXIMUM_VALUE_CHARACTERS);\r | |
143 | //\r | |
144 | // Make sure Flags can only contain supported bits.\r | |
145 | //\r | |
146 | ASSERT ((Flags & ~(LEFT_JUSTIFY | COMMA_TYPE | PREFIX_ZERO)) == 0);\r | |
147 | \r | |
878ddf1f | 148 | OriginalBuffer = Buffer;\r |
149 | \r | |
150 | if (Width == 0 || (Flags & COMMA_TYPE) != 0) {\r | |
151 | Flags &= (~PREFIX_ZERO);\r | |
152 | }\r | |
153 | \r | |
8960cdeb | 154 | if (Width == 0) {\r |
878ddf1f | 155 | Width = MAXIMUM_VALUE_CHARACTERS - 1;\r |
156 | }\r | |
157 | \r | |
158 | if (Value < 0) {\r | |
159 | Value = -Value;\r | |
160 | Buffer = BasePrintLibFillBuffer (Buffer, 1, '-', Increment);\r | |
161 | }\r | |
162 | \r | |
163 | Count = BasePrintLibValueToString (ValueBuffer, Value, 10);\r | |
164 | \r | |
165 | if ((Flags & PREFIX_ZERO) != 0) {\r | |
166 | Buffer = BasePrintLibFillBuffer (Buffer, Width - Count, '0', Increment);\r | |
167 | }\r | |
168 | \r | |
169 | Digits = 3 - (Count % 3);\r | |
170 | for (Index = 0; Index < Count; Index++) {\r | |
171 | Buffer = BasePrintLibFillBuffer (Buffer, 1, ValueBuffer[Count - Index], Increment);\r | |
172 | if ((Flags & COMMA_TYPE) != 0) {\r | |
173 | Digits++;\r | |
174 | if (Digits == 3) {\r | |
175 | Digits = 0;\r | |
176 | if ((Index + 1) < Count) {\r | |
177 | Buffer = BasePrintLibFillBuffer (Buffer, 1, ',', Increment);\r | |
178 | }\r | |
179 | }\r | |
180 | }\r | |
181 | }\r | |
182 | \r | |
183 | Buffer = BasePrintLibFillBuffer (Buffer, 1, 0, Increment);\r | |
184 | \r | |
185 | return ((Buffer - OriginalBuffer) / Increment);\r | |
186 | }\r |