denisdemaisbr

/*
one simple way to align memory alloc'ed
based on sqlite3 macro

+7 = 8 (64-bit)
+3 = 4 (32-bit)

HINT: you can try ptrdiff_t too =)
*/

denisdemaisbr

static void str_replace(void *s, unsigned char target, unsigned char to) {
	unsigned char* str = (unsigned char*) s;
    while (*str) {
        if (*str == target) {
            *str = to;
        }
        str++;
    }
}

denisdemaisbr

static void str_remove(void *s, unsigned char target) {
	unsigned char* str = (unsigned char*) s;
    int len = strlen(str);
    int i, j = 0;

    for (i = 0; i < len; i++) {
        if (str[i] != target) {
            str[j++] = str[i];
        }
    }

denisdemaisbr

#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/resource.h>

double get_time()
{
    struct timeval t;
    struct timezone tzp;
    gettimeofday(&t, &tzp);

denisdemaisbr

function in_array(value, array)
    for _, v in ipairs(array) do
        if v == value then
            return true
        end
    end
    return false
end

denisdemaisbr

char* strdup_lower(char* str) {
	char *b;
	char *s;
	char *buf;
	
	errno = 0;
	buf = strdup(str);
	if (!buf)
		return NULL;

denisdemaisbr

/*
a simple function to duplicate string and upper it.

sample:

...
char *upper = strdup_upper("HELLO world");
if (!upper) { perror("ops!"); exit(1); }
puts(upper);
free(upper);

denisdemaisbr

-- works like c strstr()
-- retorn index if found pattern =)

function strstr(haystack, needle)
	if (not haystack) then return nil; end
	if (not needle) then return nil; end

    local h, n = #haystack, #needle;

    for i = 1, h - n + 1 do

denisdemaisbr

# based on 2023-05-03-raspios-bullseye-arm64-lite.img.xz
# 
su [your password]

apt-get update && sudo apt-get upgrade
curl -fsSL test.docker.com -o get-docker.sh && sh get-docker.sh
usermod -aG docker [user_name]

# fix 'memory/swap' error
echo "cgroup_enable=memory swapaccount=1 cgroup_memory=1 cgroup_enable=cpuset" >> /boot/cmdline.txt

denisdemaisbr

--! lua.org
--! get a argument from cli in lua-5.1

if not arg or #arg == 0 then
    print('lua args.lua [nome]');
    os.exit(1);
end

print( _VERSION )
print( string.format('ola %q', arg[1]) )