strspn.c

/*
# _____     ___ ____     ___ ____
#  ____|   |    ____|   |        | |____|
# |     ___|   |____ ___|    ____| |    \    PS2DEV Open Source Project.
#-----------------------------------------------------------------------
# Copyright 2001-2004, ps2dev - http://www.ps2dev.org
# Licenced under Academic Free License version 2.0
# Review ps2sdk README & LICENSE files for further details.
*/
 
#define SYSCLIB_DISABLE_BUILTINS
#include <sysclib.h>
 
size_t strspn(const char *s, const char *accept)
{
    const char *v2;
 
    v2 = s;
    if (*s)
    {
        const char *v3;
 
        v3 = accept;
        do
        {
            int v4;
 
            v4 = *(u8 *)v3 << 24;
            if (!*v3)
            {
                break;
            }
            do
            {
                if (v4 >> 24 == *s)
                {
                    break;
                }
                v4 = *(u8 *)++v3 << 24;
            }
            while (*v3);
            if (!*v3)
            {
                break;
            }
            s += 1;
            v3 = accept;
        }
        while (*s);
    }
    return s - v2;
}