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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
3 | * Copyright (C) 2006 Josef Cejka |
3 | * Copyright (C) 2006 Josef Cejka |
4 | * All rights reserved. |
4 | * All rights reserved. |
5 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
8 | * are met: |
9 | * |
9 | * |
10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | 29 | ||
30 | #include <stdio.h> |
30 | #include <stdio.h> |
31 | #include <unistd.h> |
31 | #include <unistd.h> |
32 | #include <io/io.h> |
32 | #include <io/io.h> |
33 | #include <stdarg.h> |
33 | #include <stdarg.h> |
34 | 34 | ||
35 | static char digits[] = "0123456789abcdef"; /**< Hexadecimal characters */ |
35 | static char digits[] = "0123456789abcdef"; /**< Hexadecimal characters */ |
36 | 36 | ||
37 | /** Print hexadecimal digits |
37 | /** Print hexadecimal digits |
38 | * |
38 | * |
39 | * Print fixed count of hexadecimal digits from |
39 | * Print fixed count of hexadecimal digits from |
40 | * the number num. The digits are printed in |
40 | * the number num. The digits are printed in |
41 | * natural left-to-right order starting with |
41 | * natural left-to-right order starting with |
42 | * the width-th digit. |
42 | * the width-th digit. |
43 | * |
43 | * |
44 | * @param num Number containing digits. |
44 | * @param num Number containing digits. |
45 | * @param width Count of digits to print. |
45 | * @param width Count of digits to print. |
46 | * |
46 | * |
47 | */ |
47 | */ |
48 | static int print_fixed_hex(const uint64_t num, const int width) |
48 | static int print_fixed_hex(const uint64_t num, const int width) |
49 | { |
49 | { |
50 | int i; |
50 | int i; |
51 | char buf[16]; |
51 | char buf[16]; |
52 | char *bptr; |
52 | char *bptr; |
53 | 53 | ||
54 | bptr = buf; |
54 | bptr = buf; |
55 | for (i = width*8 - 4; i >= 0; i -= 4) |
55 | for (i = width*8 - 4; i >= 0; i -= 4) |
56 | *bptr++ = digits[(num>>i) & 0xf]; |
56 | *bptr++ = digits[(num>>i) & 0xf]; |
57 | *bptr = '\0'; |
57 | *bptr = '\0'; |
58 | 58 | ||
59 | return putstr(buf); |
59 | return putstr(buf); |
60 | } |
60 | } |
61 | 61 | ||
62 | 62 | ||
63 | /** Print number in given base |
63 | /** Print number in given base |
64 | * |
64 | * |
65 | * Print significant digits of a number in given |
65 | * Print significant digits of a number in given |
66 | * base. |
66 | * base. |
67 | * |
67 | * |
68 | * @param num Number to print. |
68 | * @param num Number to print. |
69 | * @param base Base to print the number in (should |
69 | * @param base Base to print the number in (should |
70 | * be in range 2 .. 16). |
70 | * be in range 2 .. 16). |
71 | * |
71 | * |
72 | */ |
72 | */ |
73 | static int print_number(const unsigned int num, const unsigned int base) |
73 | static int print_number(const unsigned int num, const unsigned int base) |
74 | { |
74 | { |
75 | int val = num; |
75 | int val = num; |
76 | char d[sizeof(unsigned int)*8+1]; /* this is good enough even for base == 2 */ |
76 | char d[sizeof(unsigned int)*8+1]; /* this is good enough even for base == 2 */ |
77 | int i = sizeof(unsigned int)*8-1; |
77 | int i = sizeof(unsigned int)*8-1; |
78 | 78 | ||
79 | do { |
79 | do { |
80 | d[i--] = digits[val % base]; |
80 | d[i--] = digits[val % base]; |
81 | } while (val /= base); |
81 | } while (val /= base); |
82 | 82 | ||
83 | d[sizeof(unsigned int)*8] = 0; |
83 | d[sizeof(unsigned int)*8] = 0; |
84 | 84 | ||
85 | return putstr(&d[i + 1]); |
85 | return putstr(&d[i + 1]); |
86 | } |
86 | } |
87 | 87 | ||
88 | 88 | ||
89 | 89 | ||
90 | /** General formatted text print |
90 | /** General formatted text print |
91 | * |
91 | * |
92 | * Print text formatted according the fmt parameter |
92 | * Print text formatted according the fmt parameter |
93 | * and variant arguments. Each formatting directive |
93 | * and variant arguments. Each formatting directive |
94 | * begins with \% (percentage) character and one of the |
94 | * begins with \% (percentage) character and one of the |
95 | * following character: |
95 | * following character: |
96 | * |
96 | * |
97 | * \% Prints the percentage character. |
97 | * \% Prints the percentage character. |
98 | * |
98 | * |
99 | * s The next variant argument is treated as char* |
99 | * s The next variant argument is treated as char* |
100 | * and printed as a NULL terminated string. |
100 | * and printed as a NULL terminated string. |
101 | * |
101 | * |
102 | * c The next variant argument is treated as a single char. |
102 | * c The next variant argument is treated as a single char. |
103 | * |
103 | * |
104 | * p The next variant argument is treated as a maximum |
104 | * p The next variant argument is treated as a maximum |
105 | * bit-width integer with respect to architecture |
105 | * bit-width integer with respect to architecture |
106 | * and printed in full hexadecimal width. |
106 | * and printed in full hexadecimal width. |
107 | * |
107 | * |
108 | * P As with 'p', but '0x' is prefixed. |
108 | * P As with 'p', but '0x' is prefixed. |
109 | * |
109 | * |
110 | * q The next variant argument is treated as a 64b integer |
110 | * q The next variant argument is treated as a 64b integer |
111 | * and printed in full hexadecimal width. |
111 | * and printed in full hexadecimal width. |
112 | * |
112 | * |
113 | * Q As with 'q', but '0x' is prefixed. |
113 | * Q As with 'q', but '0x' is prefixed. |
114 | * |
114 | * |
115 | * l The next variant argument is treated as a 32b integer |
115 | * l The next variant argument is treated as a 32b integer |
116 | * and printed in full hexadecimal width. |
116 | * and printed in full hexadecimal width. |
117 | * |
117 | * |
118 | * L As with 'l', but '0x' is prefixed. |
118 | * L As with 'l', but '0x' is prefixed. |
119 | * |
119 | * |
120 | * w The next variant argument is treated as a 16b integer |
120 | * w The next variant argument is treated as a 16b integer |
121 | * and printed in full hexadecimal width. |
121 | * and printed in full hexadecimal width. |
122 | * |
122 | * |
123 | * W As with 'w', but '0x' is prefixed. |
123 | * W As with 'w', but '0x' is prefixed. |
124 | * |
124 | * |
125 | * b The next variant argument is treated as a 8b integer |
125 | * b The next variant argument is treated as a 8b integer |
126 | * and printed in full hexadecimal width. |
126 | * and printed in full hexadecimal width. |
127 | * |
127 | * |
128 | * B As with 'b', but '0x' is prefixed. |
128 | * B As with 'b', but '0x' is prefixed. |
129 | * |
129 | * |
130 | * d The next variant argument is treated as integer |
130 | * d The next variant argument is treated as integer |
131 | * and printed in standard decimal format (only significant |
131 | * and printed in standard decimal format (only significant |
132 | * digits). |
132 | * digits). |
133 | * |
133 | * |
134 | * x The next variant argument is treated as integer |
134 | * x The next variant argument is treated as integer |
135 | * and printed in standard hexadecimal format (only significant |
135 | * and printed in standard hexadecimal format (only significant |
136 | * digits). |
136 | * digits). |
137 | * |
137 | * |
138 | * X As with 'x', but '0x' is prefixed. |
138 | * X As with 'x', but '0x' is prefixed. |
139 | * |
139 | * |
140 | * All other characters from fmt except the formatting directives |
140 | * All other characters from fmt except the formatting directives |
141 | * are printed in verbatim. |
141 | * are printed in verbatim. |
142 | * |
142 | * |
143 | * @param fmt Formatting NULL terminated string. |
143 | * @param fmt Formatting NULL terminated string. |
144 | */ |
144 | */ |
145 | int printf(const char *fmt, ...) |
145 | int printf(const char *fmt, ...) |
146 | { |
146 | { |
147 | int i = 0, j = 0; |
147 | int i = 0, j = 0; |
148 | int counter, retval; |
148 | int counter, retval; |
149 | va_list ap; |
149 | va_list ap; |
150 | char c; |
150 | char c; |
151 | 151 | ||
152 | counter = 0; |
152 | counter = 0; |
153 | va_start(ap, fmt); |
153 | va_start(ap, fmt); |
154 | 154 | ||
155 | while ((c = fmt[i])) { |
155 | while ((c = fmt[i])) { |
156 | /* control character */ |
156 | /* control character */ |
157 | if (c == '%' ) { |
157 | if (c == '%' ) { |
158 | /* print common characters if any processed */ |
158 | /* print common characters if any processed */ |
159 | if (i > j) { |
159 | if (i > j) { |
160 | if ((retval = putnchars(&fmt[j], i - j)) == EOF) { /* error */ |
160 | if ((retval = putnchars(&fmt[j], i - j)) == EOF) { /* error */ |
161 | return -counter; |
161 | return -counter; |
162 | } |
162 | } |
163 | counter += retval; |
163 | counter += retval; |
164 | } |
164 | } |
165 | 165 | ||
166 | j = ++i; |
166 | j = ++i; |
167 | 167 | ||
168 | switch (c = fmt[i]) { |
168 | switch (c = fmt[i]) { |
169 | 169 | ||
170 | /* percentile itself */ |
170 | /* percentile itself */ |
171 | case '%': |
171 | case '%': |
172 | --j; /* soon will be incremented back */ |
172 | --j; /* soon will be incremented back */ |
173 | break; |
173 | break; |
174 | 174 | ||
175 | /* |
175 | /* |
176 | * String and character conversions. |
176 | * String and character conversions. |
177 | */ |
177 | */ |
178 | case 's': |
178 | case 's': |
179 | if ((retval = putstr(va_arg(ap, char*))) == EOF) { |
179 | if ((retval = putstr(va_arg(ap, char*))) == EOF) { |
180 | return -counter; |
180 | return -counter; |
181 | }; |
181 | }; |
182 | 182 | ||
183 | counter += retval; |
183 | counter += retval; |
184 | break; |
184 | break; |
185 | case 'c': |
185 | case 'c': |
186 | if ((retval = putnchars((char *)&va_arg(ap, int), sizeof(char))) == EOF) { |
186 | if ((retval = putnchars((char *)&va_arg(ap, int), sizeof(char))) == EOF) { |
187 | return -counter; |
187 | return -counter; |
188 | }; |
188 | }; |
189 | 189 | ||
190 | counter += retval; |
190 | counter += retval; |
191 | break; |
191 | break; |
192 | 192 | ||
193 | /* |
193 | /* |
194 | * Hexadecimal conversions with fixed width. |
194 | * Hexadecimal conversions with fixed width. |
195 | */ |
195 | */ |
196 | case 'P': |
196 | case 'P': |
197 | if ((retval = putnchars("0x", 2)) == EOF) { |
197 | if ((retval = putnchars("0x", 2)) == EOF) { |
198 | return -counter; |
198 | return -counter; |
199 | }; |
199 | }; |
200 | 200 | ||
201 | counter += retval; |
201 | counter += retval; |
202 | case 'p': |
202 | case 'p': |
203 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(int))) == EOF ) { |
203 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(int))) == EOF ) { |
204 | return -counter; |
204 | return -counter; |
205 | }; |
205 | }; |
206 | 206 | ||
207 | counter += retval; |
207 | counter += retval; |
208 | break; |
208 | break; |
209 | case 'Q': |
209 | case 'Q': |
210 | if ((retval = putnchars("0x", 2)) == EOF) { |
210 | if ((retval = putnchars("0x", 2)) == EOF) { |
211 | return -counter; |
211 | return -counter; |
212 | }; |
212 | }; |
213 | 213 | ||
214 | counter += retval; |
214 | counter += retval; |
215 | case 'q': |
215 | case 'q': |
216 | if ((retval = print_fixed_hex(va_arg(ap, uint64_t), sizeof(uint64_t))) == EOF ) { |
216 | if ((retval = print_fixed_hex(va_arg(ap, uint64_t), sizeof(uint64_t))) == EOF ) { |
217 | return -counter; |
217 | return -counter; |
218 | }; |
218 | }; |
219 | 219 | ||
220 | counter += retval; |
220 | counter += retval; |
221 | break; |
221 | break; |
222 | case 'L': |
222 | case 'L': |
223 | if ((retval = putnchars("0x", 2)) == EOF) { |
223 | if ((retval = putnchars("0x", 2)) == EOF) { |
224 | return -counter; |
224 | return -counter; |
225 | }; |
225 | }; |
226 | 226 | ||
227 | counter += retval; |
227 | counter += retval; |
228 | case 'l': |
228 | case 'l': |
229 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint32_t))) == EOF ) { |
229 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint32_t))) == EOF ) { |
230 | return -counter; |
230 | return -counter; |
231 | }; |
231 | }; |
232 | 232 | ||
233 | counter += retval; |
233 | counter += retval; |
234 | break; |
234 | break; |
235 | case 'W': |
235 | case 'W': |
236 | if ((retval = putnchars("0x", 2)) == EOF) { |
236 | if ((retval = putnchars("0x", 2)) == EOF) { |
237 | return -counter; |
237 | return -counter; |
238 | }; |
238 | }; |
239 | 239 | ||
240 | counter += retval; |
240 | counter += retval; |
241 | case 'w': |
241 | case 'w': |
242 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint16_t))) == EOF ) { |
242 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint16_t))) == EOF ) { |
243 | return -counter; |
243 | return -counter; |
244 | }; |
244 | }; |
245 | 245 | ||
246 | counter += retval; |
246 | counter += retval; |
247 | break; |
247 | break; |
248 | case 'B': |
248 | case 'B': |
249 | if ((retval = putnchars("0x", 2)) == EOF) { |
249 | if ((retval = putnchars("0x", 2)) == EOF) { |
250 | return -counter; |
250 | return -counter; |
251 | }; |
251 | }; |
252 | 252 | ||
253 | counter += retval; |
253 | counter += retval; |
254 | case 'b': |
254 | case 'b': |
255 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint8_t))) == EOF ) { |
255 | if ((retval = print_fixed_hex(va_arg(ap, int), sizeof(uint8_t))) == EOF ) { |
256 | return -counter; |
256 | return -counter; |
257 | }; |
257 | }; |
258 | 258 | ||
259 | counter += retval; |
259 | counter += retval; |
260 | break; |
260 | break; |
261 | /* |
261 | /* |
262 | * Decimal and hexadecimal conversions. |
262 | * Decimal and hexadecimal conversions. |
263 | */ |
263 | */ |
264 | case 'd': |
264 | case 'd': |
265 | if ((retval = print_number(va_arg(ap, int), 10)) == EOF ) { |
265 | if ((retval = print_number(va_arg(ap, int), 10)) == EOF ) { |
266 | return -counter; |
266 | return -counter; |
267 | }; |
267 | }; |
268 | 268 | ||
269 | counter += retval; |
269 | counter += retval; |
270 | break; |
270 | break; |
271 | case 'X': |
271 | case 'X': |
272 | if ((retval = putnchars("0x", 2)) == EOF) { |
272 | if ((retval = putnchars("0x", 2)) == EOF) { |
273 | return -counter; |
273 | return -counter; |
274 | }; |
274 | }; |
275 | 275 | ||
276 | counter += retval; |
276 | counter += retval; |
277 | case 'x': |
277 | case 'x': |
278 | if ((retval = print_number(va_arg(ap, int), 16)) == EOF ) { |
278 | if ((retval = print_number(va_arg(ap, int), 16)) == EOF ) { |
279 | return -counter; |
279 | return -counter; |
280 | }; |
280 | }; |
281 | 281 | ||
282 | counter += retval; |
282 | counter += retval; |
283 | break; |
283 | break; |
284 | /* |
284 | /* |
285 | * Bad formatting. |
285 | * Bad formatting. |
286 | */ |
286 | */ |
287 | default: |
287 | default: |
288 | return -counter; |
288 | return -counter; |
289 | } |
289 | } |
290 | ++j; |
290 | ++j; |
291 | } |
291 | } |
292 | ++i; |
292 | ++i; |
293 | } |
293 | } |
294 | 294 | ||
- | 295 | if (i > j) { |
|
- | 296 | if ((retval = putnchars(&fmt[j], i - j)) == EOF) { /* error */ |
|
- | 297 | return -counter; |
|
- | 298 | } |
|
- | 299 | counter += retval; |
|
- | 300 | } |
|
- | 301 | ||
295 | va_end(ap); |
302 | va_end(ap); |
296 | return counter; |
303 | return counter; |
297 | } |
304 | } |
298 | 305 | ||
299 | 306 |