/* This software is licensed by the MIT License, see LICENSE file */
/*                                Copyright © 2022 Gregory Lirent */

#include "include.h"

size_t string_size(const str_t* s) {
    size_t n;
    char*  p;

    if (is_null(s->buffer) || !*s->buffer)
        return 0;

    n = strasciilen(s->buffer);
    p = s->buffer + n;

    while (*p) {
        p = next_char(p);
        ++n;
    }

    return n;
}


hash_t string_hash(const str_t* s) {
    hash_t hash  = 0;
    size_t nmemb = string_nmemb(s);

    if (nmemb > 0)
        hash = s->buffer[0];

    if (nmemb > 1)
        hash += s->buffer[nmemb-1];

    hash ^= nmemb;

    return hash + VTYPE_STRING;
}


size_t libcdsb_string_count(const str_t* x, const char* s, size_t sn) {
    char*  p;
    size_t c;

    if (is_null(x->buffer) || is_null(s) || !*x->buffer || !*s) {
        return 0;
    }

    if (!sn) sn = strlen(s);

    p = x->buffer;
    c = 0;

    while (!is_null(p = strstr(p, s))) {
        p += sn;
        ++c;
    }

    return c;
}