mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
344 lines
7.8 KiB
V
344 lines
7.8 KiB
V
/**********************************************************************
|
|
*
|
|
* File scanner
|
|
*
|
|
* Copyright (c) 2021 Dario Deledda. All rights reserved.
|
|
* Use of this source code is governed by an MIT license
|
|
* that can be found in the LICENSE file.
|
|
*
|
|
* TODO:
|
|
**********************************************************************/
|
|
import os
|
|
|
|
// STBI supported format
|
|
// STBI_NO_JPEG *
|
|
// STBI_NO_PNG *
|
|
// STBI_NO_BMP *
|
|
// STBI_NO_PSD
|
|
// STBI_NO_TGA *
|
|
// STBI_NO_GIF *
|
|
// STBI_NO_HDR *
|
|
// STBI_NO_PIC *
|
|
// STBI_NO_PNM *
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Struct and Enums
|
|
*
|
|
******************************************************************************/
|
|
enum Item_type {
|
|
file = 0
|
|
folder
|
|
// archive format
|
|
zip = 16
|
|
archive_file
|
|
// graphic format, MUST stay after the other types!!
|
|
bmp = 32
|
|
jpg
|
|
png
|
|
gif
|
|
tga
|
|
ppm
|
|
pgm
|
|
pic
|
|
hdr
|
|
}
|
|
|
|
pub struct Item {
|
|
pub mut:
|
|
path string
|
|
name string
|
|
size u64
|
|
i_type Item_type = .file
|
|
container_index int // used if the item is in a container (.zip, .rar, etc)
|
|
container_item_index int // index in the container if the item is contained
|
|
need_extract bool // if true need to extraction from the container
|
|
drawable bool // if true the image can be showed
|
|
n_item int //
|
|
rotation int // number of rotation of PI/2
|
|
}
|
|
|
|
struct Item_list {
|
|
pub mut:
|
|
lst []Item
|
|
path_sep string
|
|
item_index int = -1 // image currently shown
|
|
n_item int // number of images scanned
|
|
loaded bool // flag that indicate that the list is ready to be used
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Utility functions
|
|
*
|
|
******************************************************************************/
|
|
[inline]
|
|
fn modulo(x int, n int) int {
|
|
return (x % n + n) % n
|
|
}
|
|
|
|
[inline]
|
|
fn get_extension(x string) Item_type {
|
|
// 4 char extension check
|
|
if x.len > 4 {
|
|
ext4 := x[x.len - 4..].to_lower()
|
|
match ext4 {
|
|
// containers
|
|
'.zip' { return .zip }
|
|
// graphic formats
|
|
'.jpg' { return .jpg }
|
|
'.png' { return .png }
|
|
'.bmp' { return .bmp }
|
|
'.gif' { return .gif }
|
|
'.tga' { return .tga }
|
|
'.ppm' { return .ppm }
|
|
'.pgm' { return .pgm }
|
|
'.pic' { return .pic }
|
|
'.hdr' { return .hdr }
|
|
else {}
|
|
}
|
|
}
|
|
// 5 char extension check
|
|
if x.len > 5 {
|
|
ext5 := x[x.len - 5..].to_lower()
|
|
if ext5 == '.jpeg' {
|
|
{
|
|
return .jpg
|
|
}
|
|
}
|
|
}
|
|
return .file
|
|
}
|
|
|
|
[inline]
|
|
fn is_image(x Item_type) bool {
|
|
if int(x) >= int(Item_type.bmp) {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
[inline]
|
|
fn is_container(x Item_type) bool {
|
|
if x in [.zip, .folder] {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
[inline]
|
|
fn (item_list Item_list) is_inside_a_container() bool {
|
|
if item_list.lst.len <= 0 || item_list.n_item <= 0 {
|
|
return false
|
|
}
|
|
return item_list.lst[item_list.item_index].need_extract
|
|
}
|
|
|
|
[inline]
|
|
fn (item_list Item_list) get_file_path() string {
|
|
if item_list.lst.len <= 0 || item_list.n_item <= 0 {
|
|
return ''
|
|
}
|
|
if item_list.lst[item_list.item_index].path.len > 0 {
|
|
return '${item_list.lst[item_list.item_index].path}$item_list.path_sep${item_list.lst[item_list.item_index].name}'
|
|
}
|
|
return item_list.lst[item_list.item_index].name
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Scan functions
|
|
*
|
|
******************************************************************************/
|
|
fn (mut item_list Item_list) scan_folder(path string, in_index int) ? {
|
|
println('Scanning [$path]')
|
|
mut folder_list := []string{}
|
|
lst := os.ls(path)?
|
|
|
|
// manage the single files
|
|
for c, x in lst {
|
|
pt := '$path$item_list.path_sep$x'
|
|
mut item := Item{
|
|
path: path
|
|
name: x
|
|
container_index: in_index
|
|
container_item_index: c
|
|
}
|
|
if os.is_dir(pt) {
|
|
folder_list << x
|
|
} else {
|
|
ext := get_extension(x)
|
|
if ext == .zip {
|
|
item.i_type = .zip
|
|
item_list.lst << item
|
|
item_list.scan_zip(pt, item_list.lst.len - 1)?
|
|
continue
|
|
}
|
|
if is_image(ext) == true {
|
|
item_list.n_item += 1
|
|
item.n_item = item_list.n_item
|
|
item.i_type = ext
|
|
item.drawable = true
|
|
item_list.lst << item
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
|
|
// manage the folders
|
|
for x in folder_list {
|
|
pt := '$path$item_list.path_sep$x'
|
|
item := Item{
|
|
path: path
|
|
name: x
|
|
i_type: .folder
|
|
}
|
|
item_list.lst << item
|
|
item_list.scan_folder(pt, item_list.lst.len - 1)?
|
|
}
|
|
// println(item_list.lst.len)
|
|
// println("==================================")
|
|
}
|
|
|
|
fn (item_list Item_list) print_list() {
|
|
println('================================')
|
|
for x in item_list.lst {
|
|
if x.i_type == .folder {
|
|
print('[]')
|
|
}
|
|
if x.i_type == .zip {
|
|
print('[ZIP]')
|
|
}
|
|
println('$x.path => $x.container_index $x.container_item_index $x.name ne:$x.need_extract')
|
|
}
|
|
println('n_item: $item_list.n_item index: $item_list.item_index')
|
|
println('================================')
|
|
}
|
|
|
|
fn (mut item_list Item_list) get_items_list(args []string) {
|
|
item_list.loaded = false
|
|
println('Args: $args')
|
|
|
|
item_list.path_sep = $if windows { '\\' } $else { '/' }
|
|
for x in args {
|
|
// scan folder
|
|
if os.is_dir(x) {
|
|
mut item := Item{
|
|
path: x
|
|
name: x
|
|
container_index: item_list.lst.len
|
|
i_type: .folder
|
|
}
|
|
item_list.lst << item
|
|
item_list.scan_folder(x, item_list.lst.len - 1) or {
|
|
eprintln('ERROR: scanning folder [$x]!')
|
|
continue
|
|
}
|
|
} else {
|
|
mut item := Item{
|
|
path: ''
|
|
name: x
|
|
container_index: -1
|
|
}
|
|
ext := get_extension(x)
|
|
// scan .zip
|
|
if ext == .zip {
|
|
item.i_type = .zip
|
|
item_list.lst << item
|
|
item_list.scan_zip(x, item_list.lst.len - 1) or {
|
|
eprintln('ERROR: scanning zip [$x]!')
|
|
continue
|
|
}
|
|
continue
|
|
}
|
|
// single images
|
|
if is_image(ext) == true {
|
|
item_list.n_item += 1
|
|
item.n_item = item_list.n_item
|
|
item.i_type = ext
|
|
item.drawable = true
|
|
item_list.lst << item
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
// debug call for list all the loaded items
|
|
// item_list.print_list()
|
|
|
|
println('Items: $item_list.n_item')
|
|
println('Scanning done.')
|
|
|
|
item_list.get_next_item(1)
|
|
item_list.loaded = true
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Navigation functions
|
|
*
|
|
******************************************************************************/
|
|
fn (mut item_list Item_list) get_next_item(in_inc int) {
|
|
// if empty exit
|
|
if item_list.lst.len <= 0 || item_list.n_item <= 0 {
|
|
return
|
|
}
|
|
|
|
inc := if in_inc > 0 { 1 } else { -1 }
|
|
mut i := item_list.item_index + in_inc
|
|
i = modulo(i, item_list.lst.len)
|
|
start := i
|
|
for {
|
|
if item_list.lst[i].drawable == true {
|
|
item_list.item_index = i
|
|
break
|
|
}
|
|
i = i + inc
|
|
i = modulo(i, item_list.lst.len)
|
|
// if we are in a loop break it
|
|
if i == start {
|
|
break
|
|
}
|
|
}
|
|
// println("Found: ${item_list.item_index}")
|
|
}
|
|
|
|
fn (mut item_list Item_list) go_to_next_container(in_inc int) {
|
|
// if empty exit
|
|
if item_list.lst.len <= 0 || item_list.n_item <= 0 {
|
|
return
|
|
}
|
|
inc := if in_inc > 0 { 1 } else { -1 }
|
|
mut i := item_list.item_index + in_inc
|
|
i = modulo(i, item_list.lst.len)
|
|
start := i
|
|
for {
|
|
// check if we found a folder
|
|
if is_container(item_list.lst[i].i_type) == true
|
|
&& i != item_list.lst[item_list.item_index].container_index {
|
|
item_list.item_index = i
|
|
item_list.get_next_item(1)
|
|
break
|
|
}
|
|
// continue to search
|
|
i = i + inc
|
|
i = modulo(i, item_list.lst.len)
|
|
// if we are in a loop break it
|
|
if i == start {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* Other functions
|
|
*
|
|
******************************************************************************/
|
|
[inline]
|
|
fn (mut item_list Item_list) rotate(in_inc int) {
|
|
item_list.lst[item_list.item_index].rotation += in_inc
|
|
if item_list.lst[item_list.item_index].rotation >= 4 {
|
|
item_list.lst[item_list.item_index].rotation = 0
|
|
}
|
|
}
|