Max 5 API Reference

basic_c_strings.c

#include "ext.h"
#include "ext_strings.h"

#ifdef WIN_VERSION

#ifndef _CRT_SECURE_NO_WARNINGS
#define _CRT_SECURE_NO_WARNINGS
#endif

#include <string.h>

#endif // #ifdef WIN_VERSION

#ifndef WIN_VERSION
#ifndef NDEBUG

char *strcpy(char *s1, const char *s2)
{
    char *ret = s1;
    
    while ((*s1++ = *s2++) != 0)
        ;

    return ret;
}

char *strcat(char *s1, const char *s2)
{
    char *ret = s1;

    while (*s1++)
        ;
    --s1;
    while ((*s1++ = *s2++) != 0)
        ;
    return ret;
}

int strcmp(const char *s1, const char *s2)
{
    char c1, c2, dif;
    
    for (;;) {
        if (!(c1 = *s1++))
            return *s2 ? -1 : 0;
        if (!(c2 = *s2++))
            return 1;
        if (!(dif = (c1 - c2)))
            continue;
        if (dif < 0)
            return -1;
        else
            return 1;
    }

    return 0;
}

unsigned long strlen(const char *s)
{
    long len = 0;
    
    while (*s++)
        ++len;
    
    return len;
}

char *strncpy(char *s1, const char *s2, unsigned long n)
{
    char *res = s1;
    
    while (n--) {
        if ((*s1++ = *s2)!=0)
            ++s2;
    }
    return res;
}

char *strncat(char *s1, const char *s2, unsigned long n)
{
    char *res = s1;
    
    if (n) {
        while (*s1++)
            ;
        --s1;
        while (n--)
            if (!(*s1++ = *s2++))
                return res;
        *s1 = '\0';         
    }
    return res;
}

int strncmp(const char *s1, const char *s2, unsigned long n)
{
    char c1, c2, dif;
    
    while (n--) {
        if (!(c1 = *s1++))
            return *s2 ? -1 : 0;
        if (!(c2 = *s2++))
            return 1;
        if (!(dif = (c1 - c2)))
            continue;
        if (dif < 0)
            return -1;
        else
            return 1;
    }
    return 0;
}

#endif // NDEBUG
#endif // #ifndef WIN_VERSION

void ctopcpy(unsigned char *p1, char *p2)
{
    long len= (long) strlen(p2);
    //changed this to not rely on CtoPstr
    strcpy((char *)p1+1, p2);
    p1[0]=(len>255)?255:(unsigned char)len;
}

void ptoccpy(char *p1, unsigned char *p2)
{
    register int len = (*p2++) & 0xff;
    while (len--) *p1++ = *p2++;
    *p1 = '\0';
}

void setmem(void *ss, long n, short b)
{
    register int i;
    unsigned char *s = (unsigned char *)ss;
    
    for (i=0; i < n; i++,s++)
        *s = (unsigned char)b;
}

void pstrcpy(unsigned char *p2, unsigned char *p1)
{
    register int len;
    
    len = *p2++ = *p1++;
    while (--len>=0) *p2++=*p1++;
}

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