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93e3992d | 1 | /** @file |
2 | ||
3 | Copyright (c) 2004 - 2007, Intel Corporation | |
4 | All rights reserved. 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 | Module Name: | |
13 | ||
14 | Print.c | |
15 | ||
16 | Abstract: | |
17 | ||
18 | Basic Ascii AvSPrintf() function named VSPrint(). VSPrint() enables very | |
19 | simple implemenation of SPrint() and Print() to support debug. | |
20 | ||
21 | You can not Print more than EFI_DRIVER_LIB_MAX_PRINT_BUFFER characters at a | |
22 | time. This makes the implementation very simple. | |
23 | ||
24 | VSPrint, Print, SPrint format specification has the follwoing form | |
25 | ||
26 | %type | |
27 | ||
28 | type: | |
29 | 'S','s' - argument is an Unicode string | |
30 | 'c' - argument is an ascii character | |
31 | '%' - Print a % | |
32 | ||
33 | ||
34 | **/ | |
35 | ||
36 | //@MT:#include "Tiano.h" | |
37 | //@MT:#include "EfiDriverLib.h" | |
38 | //@MT:#include "EfiPrintLib.h" | |
39 | //@MT:#include "EfiStdArg.h" | |
40 | //@MT:#include "TianoHii.h" | |
41 | #include "Setup.h" | |
42 | ||
43 | UINTN | |
44 | ValueToString ( | |
45 | IN OUT CHAR16 *Buffer, | |
46 | IN BOOLEAN Flags, | |
47 | IN INT64 Value | |
48 | ); | |
49 | ||
50 | UINTN | |
51 | PrintInternal ( | |
52 | IN UINTN Column, | |
53 | IN UINTN Row, | |
54 | IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *Out, | |
55 | IN CHAR16 *fmt, | |
56 | IN VA_LIST args | |
57 | ) | |
58 | // | |
59 | // Display string worker for: Print, PrintAt, IPrint, IPrintAt | |
60 | // | |
61 | { | |
62 | CHAR16 *Buffer; | |
63 | CHAR16 *BackupBuffer; | |
64 | UINTN Index; | |
65 | UINTN PreviousIndex; | |
66 | ||
67 | // | |
68 | // For now, allocate an arbitrarily long buffer | |
69 | // | |
70 | Buffer = AllocateZeroPool (0x10000); | |
71 | BackupBuffer = AllocateZeroPool (0x10000); | |
72 | ASSERT (Buffer); | |
73 | ASSERT (BackupBuffer); | |
74 | ||
75 | if (Column != (UINTN) -1) { | |
76 | Out->SetCursorPosition (Out, Column, Row); | |
77 | } | |
78 | ||
79 | UnicodeVSPrint (Buffer, 0x10000, fmt, args); | |
80 | ||
81 | Out->Mode->Attribute = Out->Mode->Attribute & 0x7f; | |
82 | ||
83 | Out->SetAttribute (Out, Out->Mode->Attribute); | |
84 | ||
85 | Index = 0; | |
86 | PreviousIndex = 0; | |
87 | ||
88 | do { | |
89 | for (; (Buffer[Index] != NARROW_CHAR) && (Buffer[Index] != WIDE_CHAR) && (Buffer[Index] != 0); Index++) { | |
90 | BackupBuffer[Index] = Buffer[Index]; | |
91 | } | |
92 | ||
93 | if (Buffer[Index] == 0) { | |
94 | break; | |
95 | } | |
96 | // | |
97 | // Null-terminate the temporary string | |
98 | // | |
99 | BackupBuffer[Index] = 0; | |
100 | ||
101 | // | |
102 | // Print this out, we are about to switch widths | |
103 | // | |
104 | Out->OutputString (Out, &BackupBuffer[PreviousIndex]); | |
105 | ||
106 | // | |
107 | // Preserve the current index + 1, since this is where we will start printing from next | |
108 | // | |
109 | PreviousIndex = Index + 1; | |
110 | ||
111 | // | |
112 | // We are at a narrow or wide character directive. Set attributes and strip it and print it | |
113 | // | |
114 | if (Buffer[Index] == NARROW_CHAR) { | |
115 | // | |
116 | // Preserve bits 0 - 6 and zero out the rest | |
117 | // | |
118 | Out->Mode->Attribute = Out->Mode->Attribute & 0x7f; | |
119 | Out->SetAttribute (Out, Out->Mode->Attribute); | |
120 | } else { | |
121 | // | |
122 | // Must be wide, set bit 7 ON | |
123 | // | |
124 | Out->Mode->Attribute = Out->Mode->Attribute | EFI_WIDE_ATTRIBUTE; | |
125 | Out->SetAttribute (Out, Out->Mode->Attribute); | |
126 | } | |
127 | ||
128 | Index++; | |
129 | ||
130 | } while (Buffer[Index] != 0); | |
131 | ||
132 | // | |
133 | // We hit the end of the string - print it | |
134 | // | |
135 | Out->OutputString (Out, &BackupBuffer[PreviousIndex]); | |
136 | ||
137 | gBS->FreePool (Buffer); | |
138 | gBS->FreePool (BackupBuffer); | |
139 | return EFI_SUCCESS; | |
140 | } | |
141 | ||
142 | ||
143 | /** | |
144 | Prints a formatted unicode string to the default console | |
145 | ||
146 | @param fmt Format string | |
147 | ||
148 | @return Length of string printed to the console | |
149 | ||
150 | **/ | |
151 | UINTN | |
152 | ConsolePrint ( | |
153 | IN CHAR16 *fmt, | |
154 | ... | |
155 | ) | |
156 | { | |
157 | VA_LIST args; | |
158 | ||
159 | VA_START (args, fmt); | |
160 | return PrintInternal ((UINTN) -1, (UINTN) -1, gST->ConOut, fmt, args); | |
161 | } | |
162 | ||
163 | ||
164 | /** | |
165 | Prints a unicode string to the default console, | |
166 | using L"%s" format. | |
167 | ||
168 | @param String String pointer. | |
169 | ||
170 | @return Length of string printed to the console | |
171 | ||
172 | **/ | |
173 | UINTN | |
174 | PrintString ( | |
175 | CHAR16 *String | |
176 | ) | |
177 | { | |
178 | return ConsolePrint (L"%s", String); | |
179 | } | |
180 | ||
181 | ||
182 | /** | |
183 | Prints a chracter to the default console, | |
184 | using L"%c" format. | |
185 | ||
186 | @param Character Character to print. | |
187 | ||
188 | @return Length of string printed to the console. | |
189 | ||
190 | **/ | |
191 | UINTN | |
192 | PrintChar ( | |
193 | CHAR16 Character | |
194 | ) | |
195 | { | |
196 | return ConsolePrint (L"%c", Character); | |
197 | } | |
198 | ||
199 | ||
200 | /** | |
201 | Prints a formatted unicode string to the default console, at | |
202 | the supplied cursor position | |
203 | ||
204 | @param Row The cursor position to print the string at | |
205 | @param fmt Format string | |
206 | ||
207 | @return Length of string printed to the console | |
208 | ||
209 | **/ | |
210 | UINTN | |
211 | PrintAt ( | |
212 | IN UINTN Column, | |
213 | IN UINTN Row, | |
214 | IN CHAR16 *fmt, | |
215 | ... | |
216 | ) | |
217 | { | |
218 | VA_LIST args; | |
219 | ||
220 | VA_START (args, fmt); | |
221 | return PrintInternal (Column, Row, gST->ConOut, fmt, args); | |
222 | } | |
223 | ||
224 | ||
225 | /** | |
226 | Prints a unicode string to the default console, at | |
227 | the supplied cursor position, using L"%s" format. | |
228 | ||
229 | @param Row The cursor position to print the string at | |
230 | @param String String pointer. | |
231 | ||
232 | @return Length of string printed to the console | |
233 | ||
234 | **/ | |
235 | UINTN | |
236 | PrintStringAt ( | |
237 | IN UINTN Column, | |
238 | IN UINTN Row, | |
239 | CHAR16 *String | |
240 | ) | |
241 | { | |
242 | return PrintAt (Column, Row, L"%s", String); | |
243 | } | |
244 | ||
245 | ||
246 | /** | |
247 | Prints a chracter to the default console, at | |
248 | the supplied cursor position, using L"%c" format. | |
249 | ||
250 | @param Row The cursor position to print the string at | |
251 | @param Character Character to print. | |
252 | ||
253 | @return Length of string printed to the console. | |
254 | ||
255 | **/ | |
256 | UINTN | |
257 | PrintCharAt ( | |
258 | IN UINTN Column, | |
259 | IN UINTN Row, | |
260 | CHAR16 Character | |
261 | ) | |
262 | { | |
263 | return PrintAt (Column, Row, L"%c", Character); | |
264 | } | |
265 | ||
266 | ||
267 | /** | |
268 | VSPrint worker function that prints a Value as a decimal number in Buffer | |
269 | ||
270 | @param Buffer Location to place ascii decimal number string of Value. | |
271 | @param Value Decimal value to convert to a string in Buffer. | |
272 | @param Flags Flags to use in printing decimal string, see file header for | |
273 | details. | |
274 | ||
275 | @return Number of characters printed. | |
276 | ||
277 | **/ | |
278 | UINTN | |
279 | ValueToString ( | |
280 | IN OUT CHAR16 *Buffer, | |
281 | IN BOOLEAN Flags, | |
282 | IN INT64 Value | |
283 | ) | |
284 | { | |
285 | CHAR16 TempBuffer[30]; | |
286 | CHAR16 *TempStr; | |
287 | CHAR16 *BufferPtr; | |
288 | UINTN Count; | |
289 | UINTN NumberCount; | |
290 | UINT32 Remainder; | |
291 | BOOLEAN Negative; | |
292 | ||
293 | Negative = FALSE; | |
294 | TempStr = TempBuffer; | |
295 | BufferPtr = Buffer; | |
296 | Count = 0; | |
297 | NumberCount = 0; | |
298 | ||
299 | if (Value < 0) { | |
300 | Negative = TRUE; | |
301 | Value = -Value; | |
302 | } | |
303 | ||
304 | do { | |
305 | Value = (INT64) DivU64x32Remainder ((UINT64) Value, 10, &Remainder); | |
306 | *(TempStr++) = (CHAR16) (Remainder + '0'); | |
307 | Count++; | |
308 | NumberCount++; | |
309 | if ((Flags & COMMA_TYPE) == COMMA_TYPE) { | |
310 | if (NumberCount % 3 == 0 && Value != 0) { | |
311 | *(TempStr++) = ','; | |
312 | Count++; | |
313 | } | |
314 | } | |
315 | } while (Value != 0); | |
316 | ||
317 | if (Negative) { | |
318 | *(BufferPtr++) = '-'; | |
319 | Count++; | |
320 | } | |
321 | ||
322 | // | |
323 | // Reverse temp string into Buffer. | |
324 | // | |
325 | while (TempStr != TempBuffer) { | |
326 | *(BufferPtr++) = *(--TempStr); | |
327 | } | |
328 | ||
329 | *BufferPtr = 0; | |
330 | return Count; | |
331 | } |