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 * @brief   String manipulation functions.
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 * @brief   String manipulation functions.
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 */
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 */
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/** Return number of characters in a string.
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/** Return number of characters in a string.
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 *
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 *
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 * @param str NULL terminated string.
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 * @param str       NULL terminated string.
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 *
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 *
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 * @return Number of characters in str.
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 * @return      Number of characters in str.
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 */
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 */
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size_t strlen(const char *str)
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size_t strlen(const char *str)
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{
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{
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    int i;
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    int i;
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        ;
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        ;
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    return i;
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    return i;
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}
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}
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/** Compare two NULL terminated strings
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/** Compare two NULL terminated strings.
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 *
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 *
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 * Do a char-by-char comparison of two NULL terminated strings.
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 * Do a char-by-char comparison of two NULL terminated strings.
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 * The strings are considered equal iff they consist of the same
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 * The strings are considered equal iff they consist of the same
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 * characters on the minimum of their lengths.
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 * characters on the minimum of their lengths.
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 *
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 *
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 * @param src First string to compare.
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 * @param src       First string to compare.
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 * @param dst Second string to compare.
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 * @param dst       Second string to compare.
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 *
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 *
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 * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller.
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 * @return      0 if the strings are equal, -1 if first is smaller,
-
 
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 *          1 if second smaller.
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 *
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 *
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 */
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 */
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int strcmp(const char *src, const char *dst)
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int strcmp(const char *src, const char *dst)
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{
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{
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    for (; *src && *dst; src++, dst++) {
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    for (; *src && *dst; src++, dst++) {
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        return -1;
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        return -1;
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    return 1;
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    return 1;
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}
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}
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/** Compare two NULL terminated strings
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/** Compare two NULL terminated strings.
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 *
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 *
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 * Do a char-by-char comparison of two NULL terminated strings.
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 * Do a char-by-char comparison of two NULL terminated strings.
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 * The strings are considered equal iff they consist of the same
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 * The strings are considered equal iff they consist of the same
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 * characters on the minimum of their lengths and specified maximal
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 * characters on the minimum of their lengths and specified maximal
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 * length.
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 * length.
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 *
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 *
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 * @param src First string to compare.
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 * @param src       First string to compare.
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 * @param dst Second string to compare.
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 * @param dst       Second string to compare.
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 * @param len Maximal length for comparison.
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 * @param len       Maximal length for comparison.
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 *
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 *
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 * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller.
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 * @return      0 if the strings are equal, -1 if first is smaller,
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 *          1 if second smaller.
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 *
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 *
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 */
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 */
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int strncmp(const char *src, const char *dst, size_t len)
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int strncmp(const char *src, const char *dst, size_t len)
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{
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{
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    int i;
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    int i;
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 *
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 *
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 * Copy at most 'len' characters from string 'src' to 'dest'.
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 * Copy at most 'len' characters from string 'src' to 'dest'.
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 * If 'src' is shorter than 'len', '\0' is inserted behind the
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 * If 'src' is shorter than 'len', '\0' is inserted behind the
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 * last copied character.
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 * last copied character.
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 *
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 *
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 * @param src Source string.
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 * @param src       Source string.
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 * @param dest Destination buffer.
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 * @param dest      Destination buffer.
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 * @param len Size of destination buffer.
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 * @param len       Size of destination buffer.
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 */
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 */
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void strncpy(char *dest, const char *src, size_t len)
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void strncpy(char *dest, const char *src, size_t len)
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{
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{
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    int i;
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    int i;
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    for (i = 0; i < len; i++) {
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    for (i = 0; i < len; i++) {
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            return;
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            return;
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    }
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    }
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    dest[i-1] = '\0';
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    dest[i-1] = '\0';
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}
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}
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/** Convert ascii representation to unative_t
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/** Convert ascii representation to unative_t.
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 *
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 *
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 * Supports 0x for hexa & 0 for octal notation.
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 * Supports 0x for hexa & 0 for octal notation.
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 * Does not check for overflows, does not support negative numbers
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 * Does not check for overflows, does not support negative numbers
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 *
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 *
140
 * @param text Textual representation of number
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 * @param text      Textual representation of number.
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 * @return Converted number or 0 if no valid number ofund
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 * @return      Converted number or 0 if no valid number found.
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 */
144
 */
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unative_t atoi(const char *text)
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unative_t atoi(const char *text)
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{
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{
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    int base = 10;
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    int base = 10;
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    unative_t result = 0;
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    unative_t result = 0;
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        text += 2;
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        text += 2;
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    } else if (text[0] == '0')
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    } else if (text[0] == '0')
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        base = 8;
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        base = 8;
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    while (*text) {
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    while (*text) {
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        if (base != 16 && \
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        if (base != 16 &&
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            ((*text >= 'A' && *text <= 'F' )
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            ((*text >= 'A' && *text <= 'F') ||
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             || (*text >='a' && *text <='f')))
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            (*text >='a' && *text <='f')))
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            break;
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            break;
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        if (base == 8 && *text >='8')
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        if (base == 8 && *text >='8')
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            break;
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            break;
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        if (*text >= '0' && *text <= '9') {
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        if (*text >= '0' && *text <= '9') {
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174
    }
176
    }
175
 
177
 
176
    return result;
178
    return result;
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}
179
}
178
 
180
 
-
 
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/** Move piece of memory to another, possibly overlapping, location.
-
 
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 *
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 * @param dst       Destination address.
-
 
184
 * @param src       Source address.
-
 
185
 * @param len       Number of bytes to move.
-
 
186
 *
-
 
187
 * @return      Destination address.
-
 
188
 */
-
 
189
void *memmove(void *dst, const void *src, size_t len)
-
 
190
{
-
 
191
    char *d = dst;
-
 
192
    const char *s = src;
-
 
193
    if (s < d) {
-
 
194
        while (len--)
-
 
195
            *(d + len) = *(s + len);
-
 
196
    } else {
-
 
197
        while (len--)
-
 
198
            *d++ = *s++;
-
 
199
    }
-
 
200
   
-
 
201
    return dst;
-
 
202
}
-
 
203
 
179
/** @}
204
/** @}
180
 */
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 */