[C]Split함수 구현

char **split( char *str, const char delim, int *count )
{
    if( str == NULL ) {
        return NULL;
    }
 
    char **result = NULL;
    char *tmp = str;
    char *end = str + strlen(str);
    char prev = '\0';
    int nCount = 0;
 
    if( str[0] == delim ) {
        ++str;
    }
 
    if( *(end-1) == delim ) {
        *(end-1) = '\0';    
    }
 
    while ( *tmp != NULL )
    {
        if ( *tmp == delim && prev != delim ) {
            ++*count;
        }
 
        prev = *tmp;
        ++tmp;
    }
 
    result = (char**)malloc(sizeof(char*) * *count+1);
    tmp = strtok( str, &delim );
    while( tmp != NULL )    
    {
        result[nCount] = (char*)malloc(strlen(tmp) * sizeof(char) + 1);
        result[nCount] = tmp;
        ++nCount;
        tmp = strtok(NULL, &delim);
    }
 
    return result;
}
 
 
char str[] = "\tabcdefg\t\thijklmn\topqrstu\tvwxyz";
int nCount = 0;
char **splitstr = split( str, '\t', &nCount );
if( splitstr != NULL )
{
    for( int i=0; i<nCount; ++i ) {
        printf( "%s\n", splitstr[i] );
    }
}