relikd/icnsutil
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fix icns type sort order + add html support for png+jp2

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relikd
2021-09-26 23:00:32 +02:00
parent 6c8e832cc3
commit ffdb51e743
4 changed files with 58 additions and 22 deletions
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67
html/script.js
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@@ -45,16 +45,20 @@ function is_it32(ext, itype, first4b) {
return false;
}
function get_length(hex, i) {
return Number('0x'+hex.substring(i, i + 8));
}
function as_str(hex, i_start, i_end) {
var str = '';
for (var u = i_start; u < i_end; u += 2)
str += String.fromCharCode(parseInt(hex.substr(u, 2), 16));
return str;
}
function* parse_file(hex_str) {
function get_length(hex, i) { return Number('0x'+hex.substring(i, i + 8)); }
function get_str(hex, i, len=8) {
var str = '';
for (var u = i; u < i + len; u += 2)
str += String.fromCharCode(parseInt(hex.substr(u, 2), 16));
return str;
}
function get_media_ext(itype, idx, len) {
let ext = determine_file_ext(get_str(hex_str, idx, 16));
let ext = determine_file_ext(as_str(hex_str, idx, idx + 16));
if (ext || !itype)
return [ext, idx, idx + len];
return [icns_type(itype), idx, idx + len];
@@ -67,12 +71,12 @@ function* parse_file(hex_str) {
yield ['icns', i, num, null];
i += 8 * 2;
while (i < hex_str.length) {
let head = get_str(hex_str, i);
let head = as_str(hex_str, i, i + 8);
num = get_length(hex_str, i + 8);
yield [head, i, num, get_media_ext(head, i + 16, num * 2 - 16)];
i += num * 2;
}
} else if (ext[0] == 'argb' || ext[0] == null) {
} else {
yield [null, 0, hex_str.length, ext];
}
}
@@ -225,13 +229,49 @@ function inspect_into(sender, dest) {
}
function put_images_into(sender, dest) {
function get_image_size(data, ext, i) {
if (ext == 'png') {
let w = get_length(data, i + 16 * 2);
let h = get_length(data, i + 20 * 2);
return [w, h];
}
if (ext == 'jp2') {
if (data.substring(i, i + 8).toUpperCase() == 'FF4FFF51') {
let w = get_length(data, i + 8 * 2);
let h = get_length(data, i + 12 * 2);
return [w, h];
}
let len_ftype = get_length(data, i + 12 * 2);
// file header + type box + header box (super box) + image header box
let offset = 12 + len_ftype + 8 + 8;
let h = get_length(data, i + offset * 2);
let w = get_length(data, i + offset * 2 + 8);
return [w, h];
}
}
function append_img_div(head, typ, w, h) {
let div = document.createElement('div');
var desc = typ || '?';
if (w) { desc += ': ' + w + 'x' + h; }
div.innerHTML = `<h3>${head || ''}</h3><p>${desc}</p>`;
output.appendChild(div);
return div;
}
let src = sender.value.replace(/\s/g, '');
let output = document.getElementById(dest);
output.innerHTML = '';
for (let [head, , , ext] of parse_file(src)) {
if (!ext) continue;
if (['argb', 'rgb', 'mask', 'iconmask', 'icon1b', null].indexOf(ext[0]) == -1)
if (ext[0] == 'png' || ext[0] == 'jp2') {
let [w, h] = get_image_size(src, ext[0], ext[1]);
let img = append_img_div(head, ext[0], w, h);
img.innerHTML += `<img src="data:image/${ext[0]};base64,${btoa(as_str(src, ext[1], ext[2]))}" />`;
continue;
}
if (['argb', 'rgb', 'mask', 'iconmask', 'icon1b', null].indexOf(ext[0]) == -1) {
append_img_div(head, ext[0]).innerHTML += `<p>${(ext[2]-ext[1])/2} Bytes</p>`;
continue;
}
let num_arr = num_arr_from_hex(src.substring(ext[1], ext[2]));
let ch;
@@ -249,9 +289,6 @@ function put_images_into(sender, dest) {
ch = 3; data = expand_rgb(it32 ? num_arr.slice(4) : num_arr);
}
let [img, w] = make_image(data, ch);
let container = document.createElement('div');
container.innerHTML = `<h3>${head || ''}</h3><p>${w}x${w}</p>`
container.appendChild(img);
output.appendChild(container);
append_img_div(head, ext[0] || 'rgb', w, w).appendChild(img);
}
}