| 0,0 → 1,170 |
|---|
| /* |
| * 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 |
| * @{ |
| */ |
| |
| /** |
| * @file |
| * @brief Miscellaneous functions. |
| */ |
| |
| #include <string.h> |
| #include <print.h> |
| #include <cpu.h> |
| #include <arch/asm.h> |
| #include <arch.h> |
| #include <console/kconsole.h> |
| |
| /** 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. |
| * |
| * @param src First string to compare. |
| * @param dst Second string to compare. |
| * |
| * @return 0 if the strings are equal, -1 if first is smaller, 1 if second smaller. |
| * |
| */ |
| int strcmp(const char *src, const char *dst) |
| { |
| for (; *src && *dst; src++, dst++) { |
| if (*src < *dst) |
| return -1; |
| if (*src > *dst) |
| return 1; |
| } |
| if (*src == *dst) |
| return 0; |
| |
| if (!*src) |
| return -1; |
| |
| return 1; |
| } |
| |
| |
| /** 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) |
| { |
| unsigned int i; |
| |
| for (i = 0; (*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) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < len; i++) { |
| if (!(dest[i] = src[i])) |
| return; |
| } |
| |
| dest[i - 1] = '\0'; |
| } |
| |
| /** Find first occurence of character in string. |
| * |
| * @param s String to search. |
| * @param i Character to look for. |
| * |
| * @return Pointer to character in @a s or NULL if not found. |
| */ |
| extern char *strchr(const char *s, int i) |
| { |
| while (*s != '\0') { |
| if (*s == i) |
| return (char *) s; |
| ++s; |
| } |
| |
| return NULL; |
| } |
| |
| /** @} |
| */ |