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| 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 generic |
29 | /** @addtogroup generic |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | 32 | ||
| 33 | /** |
33 | /** |
| 34 | * @file |
34 | * @file |
| 35 | * @brief Miscellaneous functions. |
35 | * @brief Miscellaneous functions. |
| 36 | */ |
36 | */ |
| 37 | 37 | ||
| 38 | #include <string.h> |
38 | #include <string.h> |
| 39 | #include <print.h> |
39 | #include <print.h> |
| 40 | #include <cpu.h> |
40 | #include <cpu.h> |
| Line 45... | Line 45... | ||
| 45 | /** Return number of characters in a string. |
45 | /** Return number of characters in a string. |
| 46 | * |
46 | * |
| 47 | * @param str NULL terminated string. |
47 | * @param str NULL terminated string. |
| 48 | * |
48 | * |
| 49 | * @return Number of characters in str. |
49 | * @return Number of characters in str. |
| - | 50 | * |
|
| 50 | */ |
51 | */ |
| 51 | size_t strlen(const char *str) |
52 | size_t strlen(const char *str) |
| 52 | { |
53 | { |
| 53 | int i; |
54 | int i; |
| 54 | 55 | ||
| 55 | for (i = 0; str[i]; i++) |
56 | for (i = 0; str[i]; i++); |
| 56 | ; |
- | |
| 57 | 57 | ||
| 58 | return i; |
58 | return i; |
| 59 | } |
59 | } |
| 60 | 60 | ||
| 61 | /** Compare two NULL terminated strings |
61 | /** Compare two NULL terminated strings |
| Line 78... | Line 78... | ||
| 78 | if (*src > *dst) |
78 | if (*src > *dst) |
| 79 | return 1; |
79 | return 1; |
| 80 | } |
80 | } |
| 81 | if (*src == *dst) |
81 | if (*src == *dst) |
| 82 | return 0; |
82 | return 0; |
| - | 83 | ||
| 83 | if (!*src) |
84 | if (!*src) |
| 84 | return -1; |
85 | return -1; |
| - | 86 | ||
| 85 | return 1; |
87 | return 1; |
| 86 | } |
88 | } |
| 87 | 89 | ||
| 88 | 90 | ||
| 89 | /** Compare two NULL terminated strings |
91 | /** Compare two NULL terminated strings |
| Line 105... | Line 107... | ||
| 105 | unsigned int i; |
107 | unsigned int i; |
| 106 | 108 | ||
| 107 | for (i = 0; (*src) && (*dst) && (i < len); src++, dst++, i++) { |
109 | for (i = 0; (*src) && (*dst) && (i < len); src++, dst++, i++) { |
| 108 | if (*src < *dst) |
110 | if (*src < *dst) |
| 109 | return -1; |
111 | return -1; |
| - | 112 | ||
| 110 | if (*src > *dst) |
113 | if (*src > *dst) |
| 111 | return 1; |
114 | return 1; |
| 112 | } |
115 | } |
| - | 116 | ||
| 113 | if (i == len || *src == *dst) |
117 | if (i == len || *src == *dst) |
| 114 | return 0; |
118 | return 0; |
| - | 119 | ||
| 115 | if (!*src) |
120 | if (!*src) |
| 116 | return -1; |
121 | return -1; |
| - | 122 | ||
| 117 | return 1; |
123 | return 1; |
| 118 | } |
124 | } |
| 119 | 125 | ||
| 120 | 126 | ||
| 121 | 127 | ||
| Line 123... | Line 129... | ||
| 123 | * |
129 | * |
| 124 | * Copy at most 'len' characters from string 'src' to 'dest'. |
130 | * Copy at most 'len' characters from string 'src' to 'dest'. |
| 125 | * If 'src' is shorter than 'len', '\0' is inserted behind the |
131 | * If 'src' is shorter than 'len', '\0' is inserted behind the |
| 126 | * last copied character. |
132 | * last copied character. |
| 127 | * |
133 | * |
| 128 | * @param src Source string. |
134 | * @param src Source string. |
| 129 | * @param dest Destination buffer. |
135 | * @param dest Destination buffer. |
| 130 | * @param len Size of destination buffer. |
136 | * @param len Size of destination buffer. |
| - | 137 | * |
|
| 131 | */ |
138 | */ |
| 132 | void strncpy(char *dest, const char *src, size_t len) |
139 | void strncpy(char *dest, const char *src, size_t len) |
| 133 | { |
140 | { |
| 134 | unsigned int i; |
141 | unsigned int i; |
| 135 | 142 | ||
| 136 | for (i = 0; i < len; i++) { |
143 | for (i = 0; i < len; i++) { |
| 137 | if (!(dest[i] = src[i])) |
144 | if (!(dest[i] = src[i])) |
| 138 | return; |
145 | return; |
| 139 | } |
146 | } |
| 140 | 147 | ||
| 141 | dest[i - 1] = '\0'; |
148 | dest[i - 1] = '\0'; |
| 142 | } |
149 | } |
| 143 | 150 | ||
| 144 | /** Find first occurence of character in string. |
151 | /** Find first occurence of character in string. |
| 145 | * |
152 | * |
| 146 | * @param s String to search. |
153 | * @param s String to search. |
| 147 | * @param i Character to look for. |
154 | * @param i Character to look for. |
| 148 | * |
155 | * |
| 149 | * @return Pointer to character in @a s or NULL if not found. |
156 | * @return Pointer to character in @a s or NULL if not found. |
| 150 | */ |
157 | */ |
| 151 | extern char *strchr(const char *s, int i) |
158 | extern char *strchr(const char *s, int i) |
| 152 | { |
159 | { |
| 153 | while (*s != '\0') { |
160 | while (*s != '\0') { |
| - | 161 | if (*s == i) |
|
| 154 | if (*s == i) return (char *) s; |
162 | return (char *) s; |
| 155 | ++s; |
163 | ++s; |
| 156 | } |
164 | } |
| 157 | 165 | ||
| 158 | return NULL; |
166 | return NULL; |
| 159 | } |
167 | } |
| 160 | 168 | ||
| 161 | /** @} |
169 | /** @} |
| 162 | */ |
170 | */ |