rapida/c/utils.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright 2022 Ivan Polyakov */

#include "utils.h"
#include <stdlib.h>
#include <string.h>

int count_char_entries(const char *str, char ch)
{
    int cnt = 0;
    while (*str) {
        if (*str == ch) {
            cnt++;
        }
        str++;
    }
    return cnt;
}

char *rpd_strdup(const char *src)
{
    size_t size = strlen(src) + 1;
    char *dest = (char *) malloc(sizeof(char) * size);
    if (!dest) {
        return NULL;
    }
    return memcpy(dest, src, size);
}

char *rpd_strsep(char **str, const char *sep)
{
    char *s = *str, *end;
    if (!s) {
        return NULL;
    }

    end = s + strcspn(s, sep);
    if (*end) {
        *end++ = 0;
    } else {
        end = 0;
    }
    *str = end;
    return s;
}