12. Image Loading and Storing

Monolith has the ability to load and store images inside of the monolith dictionary.

static Janet j_img_load(int32_t argc, Janet *argv)
{
    monolith_d *m;
    monolith_gfx_img *img;
    const char *key;
    const char *filename;
    int rc;

    janet_fixarity(argc, 2);
    m = monolith_data_get();

    key = (const char *)janet_unwrap_string(argv[0]);
    filename = (const char *)janet_unwrap_string(argv[1]);

    img = NULL;
    rc = monolith_img_load(m,
                           key, strlen(key),
                           filename,
                           &img);

    if (rc == MONOLITH_OK) {
        return janet_wrap_abstract(img);
    }

    return janet_wrap_nil();
}

{
"monolith/img-load",
j_img_load,
"(monolith/img-load key filename)\n"
"Loads a filename into key. On success, will return\n"
"handle to image.\n"
},

static Janet j_img_find(int32_t argc, Janet *argv)
{
    monolith_d *m;
    monolith_gfx_img *img;
    const char *key;
    int rc;

    janet_fixarity(argc, 1);
    m = monolith_data_get();

    key = (const char *)janet_unwrap_string(argv[0]);

    img = NULL;
    rc = monolith_img_find(m,
                           key, strlen(key),
                           &img);

    if (rc == MONOLITH_OK) {
        return janet_wrap_abstract(img);
    }

    return janet_wrap_nil();
}

{
"monolith/img-find",
j_img_find,
"(monolith/img-find key)\n"
"Looks up image given a key.\n"
},

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