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1 | /* |
1 | /* |
2 | * Copyright (c) 2005 Martin Decky |
2 | * Copyright (c) 2005 Martin Decky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <string.h> |
35 | #include <string.h> |
36 | #include <unistd.h> |
36 | #include <unistd.h> |
37 | #include <ctype.h> |
37 | #include <ctype.h> |
38 | #include <limits.h> |
38 | #include <limits.h> |
39 | #include <align.h> |
39 | #include <align.h> |
40 | #include <sys/types.h> |
40 | #include <sys/types.h> |
41 | #include <malloc.h> |
41 | #include <malloc.h> |
42 | 42 | ||
43 | /* Dummy implementation of mem/ functions */ |
43 | /* Dummy implementation of mem/ functions */ |
44 | 44 | ||
45 | void *memset(void *s, int c, size_t n) |
45 | void *memset(void *s, int c, size_t n) |
46 | { |
46 | { |
47 | char *os = s; |
47 | char *os = s; |
48 | 48 | ||
49 | while (n--) |
49 | while (n--) |
50 | *(os++) = c; |
50 | *(os++) = c; |
51 | 51 | ||
52 | return s; |
52 | return s; |
53 | } |
53 | } |
54 | 54 | ||
55 | struct along { |
55 | struct along { |
56 | unsigned long n; |
56 | unsigned long n; |
57 | } __attribute__ ((packed)); |
57 | } __attribute__ ((packed)); |
58 | 58 | ||
59 | static void *unaligned_memcpy(void *dst, const void *src, size_t n) |
59 | static void *unaligned_memcpy(void *dst, const void *src, size_t n) |
60 | { |
60 | { |
61 | int i, j; |
61 | int i, j; |
62 | struct along *adst = dst; |
62 | struct along *adst = dst; |
63 | const struct along *asrc = src; |
63 | const struct along *asrc = src; |
64 | 64 | ||
65 | for (i = 0; i < n / sizeof(unsigned long); i++) |
65 | for (i = 0; i < n / sizeof(unsigned long); i++) |
66 | adst[i].n = asrc[i].n; |
66 | adst[i].n = asrc[i].n; |
67 | 67 | ||
68 | for (j = 0; j < n % sizeof(unsigned long); j++) |
68 | for (j = 0; j < n % sizeof(unsigned long); j++) |
69 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = |
69 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = |
70 | ((unsigned char *) (((unsigned long *) src) + i))[j]; |
70 | ((unsigned char *) (((unsigned long *) src) + i))[j]; |
71 | 71 | ||
72 | return (char *) src; |
72 | return (char *) dst; |
73 | } |
73 | } |
74 | 74 | ||
75 | void *memcpy(void *dst, const void *src, size_t n) |
75 | void *memcpy(void *dst, const void *src, size_t n) |
76 | { |
76 | { |
77 | int i, j; |
77 | int i, j; |
78 | 78 | ||
79 | if (((long) dst & (sizeof(long) - 1)) || |
79 | if (((long) dst & (sizeof(long) - 1)) || |
80 | ((long) src & (sizeof(long) - 1))) |
80 | ((long) src & (sizeof(long) - 1))) |
81 | return unaligned_memcpy(dst, src, n); |
81 | return unaligned_memcpy(dst, src, n); |
82 | 82 | ||
83 | for (i = 0; i < n / sizeof(unsigned long); i++) |
83 | for (i = 0; i < n / sizeof(unsigned long); i++) |
84 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
84 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
85 | 85 | ||
86 | for (j = 0; j < n % sizeof(unsigned long); j++) |
86 | for (j = 0; j < n % sizeof(unsigned long); j++) |
87 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = |
87 | ((unsigned char *) (((unsigned long *) dst) + i))[j] = |
88 | ((unsigned char *) (((unsigned long *) src) + i))[j]; |
88 | ((unsigned char *) (((unsigned long *) src) + i))[j]; |
89 | 89 | ||
90 | return (char *) src; |
90 | return (char *) dst; |
91 | } |
91 | } |
92 | 92 | ||
93 | void *memmove(void *dst, const void *src, size_t n) |
93 | void *memmove(void *dst, const void *src, size_t n) |
94 | { |
94 | { |
95 | int i, j; |
95 | int i, j; |
96 | 96 | ||
97 | if (src > dst) |
97 | if (src > dst) |
98 | return memcpy(dst, src, n); |
98 | return memcpy(dst, src, n); |
99 | 99 | ||
100 | for (j = (n % sizeof(unsigned long)) - 1; j >= 0; j--) |
100 | for (j = (n % sizeof(unsigned long)) - 1; j >= 0; j--) |
101 | ((unsigned char *) ((unsigned long *) dst))[j] = |
101 | ((unsigned char *) ((unsigned long *) dst))[j] = |
102 | ((unsigned char *) ((unsigned long *) src))[j]; |
102 | ((unsigned char *) ((unsigned long *) src))[j]; |
103 | 103 | ||
104 | for (i = n / sizeof(unsigned long) - 1; i >=0 ; i--) |
104 | for (i = n / sizeof(unsigned long) - 1; i >=0 ; i--) |
105 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
105 | ((unsigned long *) dst)[i] = ((unsigned long *) src)[i]; |
106 | 106 | ||
107 | return (char *) src; |
107 | return (char *) dst; |
108 | } |
108 | } |
109 | 109 | ||
110 | /** Compare two memory areas. |
110 | /** Compare two memory areas. |
111 | * |
111 | * |
112 | * @param s1 Pointer to the first area to compare. |
112 | * @param s1 Pointer to the first area to compare. |
113 | * @param s2 Pointer to the second area to compare. |
113 | * @param s2 Pointer to the second area to compare. |
114 | * @param len Size of the first area in bytes. Both areas must have |
114 | * @param len Size of the first area in bytes. Both areas must have |
115 | * the same length. |
115 | * the same length. |
116 | * @return If len is 0, return zero. If the areas match, return |
116 | * @return If len is 0, return zero. If the areas match, return |
117 | * zero. Otherwise return non-zero. |
117 | * zero. Otherwise return non-zero. |
118 | */ |
118 | */ |
119 | int bcmp(const char *s1, const char *s2, size_t len) |
119 | int bcmp(const char *s1, const char *s2, size_t len) |
120 | { |
120 | { |
121 | for (; len && *s1++ == *s2++; len--) |
121 | for (; len && *s1++ == *s2++; len--) |
122 | ; |
122 | ; |
123 | return len; |
123 | return len; |
124 | } |
124 | } |
125 | 125 | ||
126 | /** Count the number of characters in the string, not including terminating 0. |
126 | /** Count the number of characters in the string, not including terminating 0. |
127 | * |
127 | * |
128 | * @param str String. |
128 | * @param str String. |
129 | * @return Number of characters in string. |
129 | * @return Number of characters in string. |
130 | */ |
130 | */ |
131 | size_t strlen(const char *str) |
131 | size_t strlen(const char *str) |
132 | { |
132 | { |
133 | size_t counter = 0; |
133 | size_t counter = 0; |
134 | 134 | ||
135 | while (str[counter] != 0) |
135 | while (str[counter] != 0) |
136 | counter++; |
136 | counter++; |
137 | 137 | ||
138 | return counter; |
138 | return counter; |
139 | } |
139 | } |
140 | 140 | ||
141 | int strcmp(const char *a, const char *b) |
141 | int strcmp(const char *a, const char *b) |
142 | { |
142 | { |
143 | int c = 0; |
143 | int c = 0; |
144 | 144 | ||
145 | while (a[c] && b[c] && (!(a[c] - b[c]))) |
145 | while (a[c] && b[c] && (!(a[c] - b[c]))) |
146 | c++; |
146 | c++; |
147 | 147 | ||
148 | return (a[c] - b[c]); |
148 | return (a[c] - b[c]); |
149 | } |
149 | } |
150 | 150 | ||
151 | int strncmp(const char *a, const char *b, size_t n) |
151 | int strncmp(const char *a, const char *b, size_t n) |
152 | { |
152 | { |
153 | size_t c = 0; |
153 | size_t c = 0; |
154 | 154 | ||
155 | while (c < n && a[c] && b[c] && (!(a[c] - b[c]))) |
155 | while (c < n && a[c] && b[c] && (!(a[c] - b[c]))) |
156 | c++; |
156 | c++; |
157 | 157 | ||
158 | return ( c < n ? a[c] - b[c] : 0); |
158 | return ( c < n ? a[c] - b[c] : 0); |
159 | 159 | ||
160 | } |
160 | } |
161 | 161 | ||
162 | int stricmp(const char *a, const char *b) |
162 | int stricmp(const char *a, const char *b) |
163 | { |
163 | { |
164 | int c = 0; |
164 | int c = 0; |
165 | 165 | ||
166 | while (a[c] && b[c] && (!(tolower(a[c]) - tolower(b[c])))) |
166 | while (a[c] && b[c] && (!(tolower(a[c]) - tolower(b[c])))) |
167 | c++; |
167 | c++; |
168 | 168 | ||
169 | return (tolower(a[c]) - tolower(b[c])); |
169 | return (tolower(a[c]) - tolower(b[c])); |
170 | } |
170 | } |
171 | 171 | ||
172 | /** Return pointer to the first occurence of character c in string. |
172 | /** Return pointer to the first occurence of character c in string. |
173 | * |
173 | * |
174 | * @param str Scanned string. |
174 | * @param str Scanned string. |
175 | * @param c Searched character (taken as one byte). |
175 | * @param c Searched character (taken as one byte). |
176 | * @return Pointer to the matched character or NULL if it is not |
176 | * @return Pointer to the matched character or NULL if it is not |
177 | * found in given string. |
177 | * found in given string. |
178 | */ |
178 | */ |
179 | char *strchr(const char *str, int c) |
179 | char *strchr(const char *str, int c) |
180 | { |
180 | { |
181 | while (*str != '\0') { |
181 | while (*str != '\0') { |
182 | if (*str == (char) c) |
182 | if (*str == (char) c) |
183 | return (char *) str; |
183 | return (char *) str; |
184 | str++; |
184 | str++; |
185 | } |
185 | } |
186 | 186 | ||
187 | return NULL; |
187 | return NULL; |
188 | } |
188 | } |
189 | 189 | ||
190 | /** Return pointer to the last occurence of character c in string. |
190 | /** Return pointer to the last occurence of character c in string. |
191 | * |
191 | * |
192 | * @param str Scanned string. |
192 | * @param str Scanned string. |
193 | * @param c Searched character (taken as one byte). |
193 | * @param c Searched character (taken as one byte). |
194 | * @return Pointer to the matched character or NULL if it is not |
194 | * @return Pointer to the matched character or NULL if it is not |
195 | * found in given string. |
195 | * found in given string. |
196 | */ |
196 | */ |
197 | char *strrchr(const char *str, int c) |
197 | char *strrchr(const char *str, int c) |
198 | { |
198 | { |
199 | char *retval = NULL; |
199 | char *retval = NULL; |
200 | 200 | ||
201 | while (*str != '\0') { |
201 | while (*str != '\0') { |
202 | if (*str == (char) c) |
202 | if (*str == (char) c) |
203 | retval = (char *) str; |
203 | retval = (char *) str; |
204 | str++; |
204 | str++; |
205 | } |
205 | } |
206 | 206 | ||
207 | return (char *) retval; |
207 | return (char *) retval; |
208 | } |
208 | } |
209 | 209 | ||
210 | /** Convert string to a number. |
210 | /** Convert string to a number. |
211 | * Core of strtol and strtoul functions. |
211 | * Core of strtol and strtoul functions. |
212 | * |
212 | * |
213 | * @param nptr Pointer to string. |
213 | * @param nptr Pointer to string. |
214 | * @param endptr If not NULL, function stores here pointer to the first |
214 | * @param endptr If not NULL, function stores here pointer to the first |
215 | * invalid character. |
215 | * invalid character. |
216 | * @param base Zero or number between 2 and 36 inclusive. |
216 | * @param base Zero or number between 2 and 36 inclusive. |
217 | * @param sgn It's set to 1 if minus found. |
217 | * @param sgn It's set to 1 if minus found. |
218 | * @return Result of conversion. |
218 | * @return Result of conversion. |
219 | */ |
219 | */ |
220 | static unsigned long |
220 | static unsigned long |
221 | _strtoul(const char *nptr, char **endptr, int base, char *sgn) |
221 | _strtoul(const char *nptr, char **endptr, int base, char *sgn) |
222 | { |
222 | { |
223 | unsigned char c; |
223 | unsigned char c; |
224 | unsigned long result = 0; |
224 | unsigned long result = 0; |
225 | unsigned long a, b; |
225 | unsigned long a, b; |
226 | const char *str = nptr; |
226 | const char *str = nptr; |
227 | const char *tmpptr; |
227 | const char *tmpptr; |
228 | 228 | ||
229 | while (isspace(*str)) |
229 | while (isspace(*str)) |
230 | str++; |
230 | str++; |
231 | 231 | ||
232 | if (*str == '-') { |
232 | if (*str == '-') { |
233 | *sgn = 1; |
233 | *sgn = 1; |
234 | ++str; |
234 | ++str; |
235 | } else if (*str == '+') |
235 | } else if (*str == '+') |
236 | ++str; |
236 | ++str; |
237 | 237 | ||
238 | if (base) { |
238 | if (base) { |
239 | if ((base == 1) || (base > 36)) { |
239 | if ((base == 1) || (base > 36)) { |
240 | /* FIXME: set errno to EINVAL */ |
240 | /* FIXME: set errno to EINVAL */ |
241 | return 0; |
241 | return 0; |
242 | } |
242 | } |
243 | if ((base == 16) && (*str == '0') && ((str[1] == 'x') || |
243 | if ((base == 16) && (*str == '0') && ((str[1] == 'x') || |
244 | (str[1] == 'X'))) { |
244 | (str[1] == 'X'))) { |
245 | str += 2; |
245 | str += 2; |
246 | } |
246 | } |
247 | } else { |
247 | } else { |
248 | base = 10; |
248 | base = 10; |
249 | 249 | ||
250 | if (*str == '0') { |
250 | if (*str == '0') { |
251 | base = 8; |
251 | base = 8; |
252 | if ((str[1] == 'X') || (str[1] == 'x')) { |
252 | if ((str[1] == 'X') || (str[1] == 'x')) { |
253 | base = 16; |
253 | base = 16; |
254 | str += 2; |
254 | str += 2; |
255 | } |
255 | } |
256 | } |
256 | } |
257 | } |
257 | } |
258 | 258 | ||
259 | tmpptr = str; |
259 | tmpptr = str; |
260 | 260 | ||
261 | while (*str) { |
261 | while (*str) { |
262 | c = *str; |
262 | c = *str; |
263 | c = (c >= 'a' ? c - 'a' + 10 : (c >= 'A' ? c - 'A' + 10 : |
263 | c = (c >= 'a' ? c - 'a' + 10 : (c >= 'A' ? c - 'A' + 10 : |
264 | (c <= '9' ? c - '0' : 0xff))); |
264 | (c <= '9' ? c - '0' : 0xff))); |
265 | if (c > base) { |
265 | if (c > base) { |
266 | break; |
266 | break; |
267 | } |
267 | } |
268 | 268 | ||
269 | a = (result & 0xff) * base + c; |
269 | a = (result & 0xff) * base + c; |
270 | b = (result >> 8) * base + (a >> 8); |
270 | b = (result >> 8) * base + (a >> 8); |
271 | 271 | ||
272 | if (b > (ULONG_MAX >> 8)) { |
272 | if (b > (ULONG_MAX >> 8)) { |
273 | /* overflow */ |
273 | /* overflow */ |
274 | /* FIXME: errno = ERANGE*/ |
274 | /* FIXME: errno = ERANGE*/ |
275 | return ULONG_MAX; |
275 | return ULONG_MAX; |
276 | } |
276 | } |
277 | 277 | ||
278 | result = (b << 8) + (a & 0xff); |
278 | result = (b << 8) + (a & 0xff); |
279 | ++str; |
279 | ++str; |
280 | } |
280 | } |
281 | 281 | ||
282 | if (str == tmpptr) { |
282 | if (str == tmpptr) { |
283 | /* |
283 | /* |
284 | * No number was found => first invalid character is the first |
284 | * No number was found => first invalid character is the first |
285 | * character of the string. |
285 | * character of the string. |
286 | */ |
286 | */ |
287 | /* FIXME: set errno to EINVAL */ |
287 | /* FIXME: set errno to EINVAL */ |
288 | str = nptr; |
288 | str = nptr; |
289 | result = 0; |
289 | result = 0; |
290 | } |
290 | } |
291 | 291 | ||
292 | if (endptr) |
292 | if (endptr) |
293 | *endptr = (char *) str; |
293 | *endptr = (char *) str; |
294 | 294 | ||
295 | if (nptr == str) { |
295 | if (nptr == str) { |
296 | /*FIXME: errno = EINVAL*/ |
296 | /*FIXME: errno = EINVAL*/ |
297 | return 0; |
297 | return 0; |
298 | } |
298 | } |
299 | 299 | ||
300 | return result; |
300 | return result; |
301 | } |
301 | } |
302 | 302 | ||
303 | /** Convert initial part of string to long int according to given base. |
303 | /** Convert initial part of string to long int according to given base. |
304 | * The number may begin with an arbitrary number of whitespaces followed by |
304 | * The number may begin with an arbitrary number of whitespaces followed by |
305 | * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
305 | * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
306 | * inserted and the number will be taken as hexadecimal one. If the base is 0 |
306 | * inserted and the number will be taken as hexadecimal one. If the base is 0 |
307 | * and the number begin with a zero, number will be taken as octal one (as with |
307 | * and the number begin with a zero, number will be taken as octal one (as with |
308 | * base 8). Otherwise the base 0 is taken as decimal. |
308 | * base 8). Otherwise the base 0 is taken as decimal. |
309 | * |
309 | * |
310 | * @param nptr Pointer to string. |
310 | * @param nptr Pointer to string. |
311 | * @param endptr If not NULL, function stores here pointer to the first |
311 | * @param endptr If not NULL, function stores here pointer to the first |
312 | * invalid character. |
312 | * invalid character. |
313 | * @param base Zero or number between 2 and 36 inclusive. |
313 | * @param base Zero or number between 2 and 36 inclusive. |
314 | * @return Result of conversion. |
314 | * @return Result of conversion. |
315 | */ |
315 | */ |
316 | long int strtol(const char *nptr, char **endptr, int base) |
316 | long int strtol(const char *nptr, char **endptr, int base) |
317 | { |
317 | { |
318 | char sgn = 0; |
318 | char sgn = 0; |
319 | unsigned long number = 0; |
319 | unsigned long number = 0; |
320 | 320 | ||
321 | number = _strtoul(nptr, endptr, base, &sgn); |
321 | number = _strtoul(nptr, endptr, base, &sgn); |
322 | 322 | ||
323 | if (number > LONG_MAX) { |
323 | if (number > LONG_MAX) { |
324 | if ((sgn) && (number == (unsigned long) (LONG_MAX) + 1)) { |
324 | if ((sgn) && (number == (unsigned long) (LONG_MAX) + 1)) { |
325 | /* FIXME: set 0 to errno */ |
325 | /* FIXME: set 0 to errno */ |
326 | return number; |
326 | return number; |
327 | } |
327 | } |
328 | /* FIXME: set ERANGE to errno */ |
328 | /* FIXME: set ERANGE to errno */ |
329 | return (sgn ? LONG_MIN : LONG_MAX); |
329 | return (sgn ? LONG_MIN : LONG_MAX); |
330 | } |
330 | } |
331 | 331 | ||
332 | return (sgn ? -number : number); |
332 | return (sgn ? -number : number); |
333 | } |
333 | } |
334 | 334 | ||
335 | 335 | ||
336 | /** Convert initial part of string to unsigned long according to given base. |
336 | /** Convert initial part of string to unsigned long according to given base. |
337 | * The number may begin with an arbitrary number of whitespaces followed by |
337 | * The number may begin with an arbitrary number of whitespaces followed by |
338 | * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
338 | * optional sign (`+' or `-'). If the base is 0 or 16, the prefix `0x' may be |
339 | * inserted and the number will be taken as hexadecimal one. If the base is 0 |
339 | * inserted and the number will be taken as hexadecimal one. If the base is 0 |
340 | * and the number begin with a zero, number will be taken as octal one (as with |
340 | * and the number begin with a zero, number will be taken as octal one (as with |
341 | * base 8). Otherwise the base 0 is taken as decimal. |
341 | * base 8). Otherwise the base 0 is taken as decimal. |
342 | * |
342 | * |
343 | * @param nptr Pointer to string. |
343 | * @param nptr Pointer to string. |
344 | * @param endptr If not NULL, function stores here pointer to the first |
344 | * @param endptr If not NULL, function stores here pointer to the first |
345 | * invalid character |
345 | * invalid character |
346 | * @param base Zero or number between 2 and 36 inclusive. |
346 | * @param base Zero or number between 2 and 36 inclusive. |
347 | * @return Result of conversion. |
347 | * @return Result of conversion. |
348 | */ |
348 | */ |
349 | unsigned long strtoul(const char *nptr, char **endptr, int base) |
349 | unsigned long strtoul(const char *nptr, char **endptr, int base) |
350 | { |
350 | { |
351 | char sgn = 0; |
351 | char sgn = 0; |
352 | unsigned long number = 0; |
352 | unsigned long number = 0; |
353 | 353 | ||
354 | number = _strtoul(nptr, endptr, base, &sgn); |
354 | number = _strtoul(nptr, endptr, base, &sgn); |
355 | 355 | ||
356 | return (sgn ? -number : number); |
356 | return (sgn ? -number : number); |
357 | } |
357 | } |
358 | 358 | ||
359 | char *strcpy(char *dest, const char *src) |
359 | char *strcpy(char *dest, const char *src) |
360 | { |
360 | { |
361 | char *orig = dest; |
361 | char *orig = dest; |
362 | 362 | ||
363 | while ((*(dest++) = *(src++))) |
363 | while ((*(dest++) = *(src++))) |
364 | ; |
364 | ; |
365 | return orig; |
365 | return orig; |
366 | } |
366 | } |
367 | 367 | ||
368 | char *strncpy(char *dest, const char *src, size_t n) |
368 | char *strncpy(char *dest, const char *src, size_t n) |
369 | { |
369 | { |
370 | char *orig = dest; |
370 | char *orig = dest; |
371 | 371 | ||
372 | while ((*(dest++) = *(src++)) && --n) |
372 | while ((*(dest++) = *(src++)) && --n) |
373 | ; |
373 | ; |
374 | return orig; |
374 | return orig; |
375 | } |
375 | } |
376 | 376 | ||
377 | char *strcat(char *dest, const char *src) |
377 | char *strcat(char *dest, const char *src) |
378 | { |
378 | { |
379 | char *orig = dest; |
379 | char *orig = dest; |
380 | while (*dest++) |
380 | while (*dest++) |
381 | ; |
381 | ; |
382 | --dest; |
382 | --dest; |
383 | while ((*dest++ = *src++)) |
383 | while ((*dest++ = *src++)) |
384 | ; |
384 | ; |
385 | return orig; |
385 | return orig; |
386 | } |
386 | } |
387 | 387 | ||
388 | char * strdup(const char *s1) |
388 | char * strdup(const char *s1) |
389 | { |
389 | { |
390 | size_t len = strlen(s1) + 1; |
390 | size_t len = strlen(s1) + 1; |
391 | void *ret = malloc(len); |
391 | void *ret = malloc(len); |
392 | 392 | ||
393 | if (ret == NULL) |
393 | if (ret == NULL) |
394 | return (char *) NULL; |
394 | return (char *) NULL; |
395 | 395 | ||
396 | return (char *) memcpy(ret, s1, len); |
396 | return (char *) memcpy(ret, s1, len); |
397 | } |
397 | } |
398 | 398 | ||
399 | /** @} |
399 | /** @} |
400 | */ |
400 | */ |
401 | 401 |