strings.c

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/*
 * kernel_libs/other/strings.c
 *
 * Copyright (c) 2003-2004 Lukasz Dembinski <dembol@nasa.com.pl>
 * All Rights Reserved
 * 
 * Date:        2004/01
 * Author:      Lukasz Dembinski
 * Info:        strings.c core file
 * Contact:     mailto: <dembol@nasa.com.pl>
 *
 */

#include <agnix/agnix.h>

#define STRINGS_MAX_LEN         4096

int strlen(char *buf)
{
    int i;

    if (buf[0] == 0)
        return 0;

    for(i = 0; i < STRINGS_MAX_LEN; i++) {
        if (buf[i] == 0)
            return i;// - 1;
    }
    
    return -1;
}

int strcmp(char *a, char *b)
{
    int i;

    for (i = 0; i < STRINGS_MAX_LEN; i++, a++, b++) {
        if (*a != *b)
            return -1;
        
        if (*a == 0)
            return 0;
    }
    
    return 0;
}

int word_len(char *buf, int max_len)
{
    int len;
    
    for (len = 0; len < max_len; len++) {
        if ((buf[len] == ' ') || (buf[len] == '\n'))
            return len;
    }
    
    return len;
}

char *word_next(char *buf, int max_len)
{
    int end;
    int len;
    
    end = 0;
    for (len = 0; len < max_len; len++) {
        if (buf[len] == ' ') {
            end = 1;
            continue;
        }

        if ((buf[len] == 0) || (buf[len] == '\n'))
            return NULL;
        
        if ((buf[len] != ' ') && (end))
            return &buf[len];
    }
    
    return NULL;
}

int word_cmp(char *a, char *b, int max_len)
{
    int len;

    for (len = 0; len < max_len; len++, a++, b++) {
        
        if (((*a == ' ') || (*a == '\n') || (*a == 0)) && 
            ((*b == ' ') || (*b == '\n') || (*b == 0)))
            return 0;

        if (*a != *b)
            return -1;
    }
    
    return -1;
}