| 0,0 → 1,153 |
|---|
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup generic |
| * @{ |
| */ |
| |
| #include <string.h> |
| |
| /** |
| * @file |
| * @brief String manipulation functions. |
| */ |
| |
| /** Return number of characters in a string. |
| * |
| * @param str NULL terminated string. |
| * |
| * @return Number of characters in str. |
| */ |
| size_t strlen(const char *str) |
| { |
| int i; |
| |
| for (i = 0; str[i]; i++) |
| ; |
| |
| return i; |
| } |
| |
| /** Compare two NULL terminated strings |
| * |
| * Do a char-by-char comparison of two NULL terminated strings. |
| * The strings are considered equal iff they consist of the same |
| * characters on the minimum of their lengths and specified maximal |
| * length. |
| * |
| * @param src First string to compare. |
| * @param dst Second string to compare. |
| * @param len Maximal length for comparison. |
| * |
| * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller. |
| * |
| */ |
| int strncmp(const char *src, const char *dst, size_t len) |
| { |
| int i; |
| |
| i = 0; |
| for (;*src && *dst && i < len;src++,dst++,i++) { |
| if (*src < *dst) |
| return -1; |
| if (*src > *dst) |
| return 1; |
| } |
| if (i == len || *src == *dst) |
| return 0; |
| if (!*src) |
| return -1; |
| return 1; |
| } |
| |
| /** Copy NULL terminated string. |
| * |
| * Copy at most 'len' characters from string 'src' to 'dest'. |
| * If 'src' is shorter than 'len', '\0' is inserted behind the |
| * last copied character. |
| * |
| * @param src Source string. |
| * @param dest Destination buffer. |
| * @param len Size of destination buffer. |
| */ |
| void strncpy(char *dest, const char *src, size_t len) |
| { |
| int i; |
| for (i = 0; i < len; i++) { |
| if (!(dest[i] = src[i])) |
| return; |
| } |
| dest[i-1] = '\0'; |
| } |
| |
| /** Convert ascii representation to unative_t |
| * |
| * Supports 0x for hexa & 0 for octal notation. |
| * Does not check for overflows, does not support negative numbers |
| * |
| * @param text Textual representation of number |
| * @return Converted number or 0 if no valid number ofund |
| */ |
| unative_t atoi(const char *text) |
| { |
| int base = 10; |
| unative_t result = 0; |
| |
| if (text[0] == '0' && text[1] == 'x') { |
| base = 16; |
| text += 2; |
| } else if (text[0] == '0') |
| base = 8; |
| |
| while (*text) { |
| if (base != 16 && \ |
| ((*text >= 'A' && *text <= 'F' ) |
| || (*text >='a' && *text <='f'))) |
| break; |
| if (base == 8 && *text >='8') |
| break; |
| |
| if (*text >= '0' && *text <= '9') { |
| result *= base; |
| result += *text - '0'; |
| } else if (*text >= 'A' && *text <= 'F') { |
| result *= base; |
| result += *text - 'A' + 10; |
| } else if (*text >= 'a' && *text <= 'f') { |
| result *= base; |
| result += *text - 'a' + 10; |
| } else |
| break; |
| text++; |
| } |
| |
| return result; |
| } |
| |
| /** @} |
| */ |