shithub: scoundrel

ref: 2f7ec64f856564b48d3ae7493fae937afe29c794
dir: /images.c/

#include <u.h>
#include <libc.h>
#include <draw.h>
#include <ctype.h>
#include "dat.h"
#include "fns.h"

static int
isnumeric(char *name)
{
	while (*name && isdigit(*name))
		name++;
	return *name == 0;
}

Image *images[4*15];

static Image*
loadfromfile(char *path, int num)
{
	char *file;
	int fd;
	Image *img;
	
	file = smprint("%s/%d", path, num);
	if (!file)
		sysfatal("smprint: %r");
	
	fd = open(file, OREAD);
	if (fd < 0)
		sysfatal("open file %s: %r", file);
	free(file);
	
	img = readimage(display, fd, 0);
	close(fd);
	if (!img)
		sysfatal("readimage: %r");
	return img;
}

void
loadimages(char *path)
{
	int i, n, a;
	Dir *d;
	
	a = open(path, OREAD);
	if (a < 0)
		sysfatal("open: %r");
	
	n = dirreadall(a, &d);
	close(a);
	
	memset(images, 0, sizeof images);
	
	for (i = 0; i < n; i++) {
		if (!isnumeric(d[i].name))
			continue;
		a = atoi(d[i].name);
		if (a >= nelem(images))
			continue;
		images[a] = loadfromfile(path, a);
	}
	free(d);
}

Image*
getimage(int num)
{
	Image *img;
	if (num >= nelem(images)) {
		werrstr("missing image: %d\n", num);
		return nil;
	}
	img = images[num];
	if (img)
		return img;
	werrstr("missing image: %d\n", num);
	return nil;
}