feat(resource-viewer): добавить новый ресурсный просмотрщик с базовой функциональностью

feat(nres): улучшить структуру архива с добавлением заголовка и информации о записях
feat(rsli): добавить поддержку заголовка библиотеки и улучшить обработку записей

apps/resource-viewer/src/main.rs

@@ -0,0 +1,518 @@
+use iced::widget::{button, column, container, horizontal_space, row, scrollable, text};
+use iced::{application, Element, Length, Task, Theme};
+use rfd::FileDialog;
+use std::collections::BTreeMap;
+use std::fmt::Write as _;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+fn main() -> iced::Result {
+    application("Parkan Resource Viewer", update, view)
+        .theme(theme)
+        .run_with(|| (ViewerApp::default(), Task::none()))
+}
+
+fn theme(_state: &ViewerApp) -> Theme {
+    Theme::Light
+}
+
+#[derive(Debug, Default)]
+struct ViewerApp {
+    document: Option<DocumentModel>,
+    status: String,
+}
+
+#[derive(Debug, Clone)]
+enum Message {
+    OpenRequested,
+    SelectNode(Selection),
+}
+
+fn update(state: &mut ViewerApp, message: Message) -> Task<Message> {
+    match message {
+        Message::OpenRequested => {
+            if let Some(path) = pick_archive_file() {
+                match load_document(&path) {
+                    Ok(document) => {
+                        state.status =
+                            format!("Loaded {} as {}", path.display(), document.format.label());
+                        state.document = Some(document);
+                    }
+                    Err(err) => {
+                        state.status = err;
+                    }
+                }
+            }
+        }
+        Message::SelectNode(selection) => {
+            if let Some(document) = state.document.as_mut() {
+                document.selected = selection;
+            }
+        }
+    }
+
+    Task::none()
+}
+
+fn view(state: &ViewerApp) -> Element<'_, Message> {
+    let top_bar = row![
+        button("Open archive").on_press(Message::OpenRequested),
+        text(status_text(state)).size(14)
+    ]
+    .spacing(12);
+
+    let content = if let Some(document) = &state.document {
+        view_document(document)
+    } else {
+        container(text("Open an .nres/.rsli/.lib archive to start.").size(16))
+            .width(Length::Fill)
+            .height(Length::Fill)
+            .center_x(Length::Fill)
+            .center_y(Length::Fill)
+            .into()
+    };
+
+    container(column![top_bar, content].spacing(12).padding(12))
+        .width(Length::Fill)
+        .height(Length::Fill)
+        .into()
+}
+
+fn status_text(state: &ViewerApp) -> String {
+    if state.status.is_empty() {
+        String::from("Ready")
+    } else {
+        state.status.clone()
+    }
+}
+
+fn view_document(document: &DocumentModel) -> Element<'_, Message> {
+    let mut tree = column![text("Archive tree").size(18)].spacing(6);
+    for item in &document.tree_rows {
+        let indent = horizontal_space().width(Length::Fixed(f32::from(item.depth) * 16.0));
+
+        let line = row![indent, text(&item.label).size(14)].spacing(6);
+        if let Some(selection) = item.selection {
+            let mut node_button = button(line)
+                .width(Length::Fill)
+                .on_press(Message::SelectNode(selection));
+
+            if selection == document.selected {
+                node_button = node_button.style(button::primary);
+            }
+
+            tree = tree.push(node_button);
+        } else {
+            tree = tree.push(line);
+        }
+    }
+
+    let (panel_title, fields) = selected_fields(document);
+    let mut fields_column = column![text(panel_title).size(18)].spacing(8);
+
+    for field in fields {
+        fields_column = fields_column.push(
+            row![
+                text(&field.key).size(14).width(Length::Fixed(220.0)),
+                text(&field.value).size(14).width(Length::Fill)
+            ]
+            .spacing(12),
+        );
+    }
+
+    let left = container(scrollable(tree))
+        .width(Length::FillPortion(2))
+        .height(Length::Fill);
+
+    let right = container(scrollable(fields_column))
+        .width(Length::FillPortion(5))
+        .height(Length::Fill);
+
+    row![left, right].spacing(12).height(Length::Fill).into()
+}
+
+fn selected_fields(document: &DocumentModel) -> (String, &[FieldRow]) {
+    match document.selected {
+        Selection::Archive => (
+            format!(
+                "{} fields ({})",
+                document.format.label(),
+                document.path.display()
+            ),
+            &document.archive_fields,
+        ),
+        Selection::Entry(index) => {
+            if let Some(entry) = document.entries.get(index) {
+                (entry.panel_title.clone(), &entry.fields)
+            } else {
+                (String::from("Entry"), &[])
+            }
+        }
+    }
+}
+
+fn pick_archive_file() -> Option<PathBuf> {
+    FileDialog::new()
+        .set_title("Open Parkan archive")
+        .pick_file()
+}
+
+fn load_document(path: &Path) -> Result<DocumentModel, String> {
+    let bytes =
+        fs::read(path).map_err(|err| format!("Failed to read {}: {err}", path.display()))?;
+    let Some(format) = detect_archive_format(&bytes) else {
+        return Err(format!(
+            "{} is not recognized as NRes/RsLi (unsupported magic).",
+            path.display()
+        ));
+    };
+
+    match format {
+        ArchiveFormat::Nres => load_nres_document(path),
+        ArchiveFormat::Rsli => load_rsli_document(path),
+    }
+}
+
+fn detect_archive_format(bytes: &[u8]) -> Option<ArchiveFormat> {
+    if bytes.len() >= 4 && &bytes[0..4] == b"NRes" {
+        return Some(ArchiveFormat::Nres);
+    }
+
+    if bytes.len() >= 2 && &bytes[0..2] == b"NL" {
+        return Some(ArchiveFormat::Rsli);
+    }
+
+    None
+}
+
+fn load_nres_document(path: &Path) -> Result<DocumentModel, String> {
+    let archive = nres::Archive::open_path(path)
+        .map_err(|err| format!("NRes open failed for {}: {err}", path.display()))?;
+
+    let info = archive.info();
+    let mut archive_fields = vec![
+        FieldRow::new("format", "NRes"),
+        FieldRow::new("file_size", info.file_size.to_string()),
+        FieldRow::new("raw_mode", info.raw_mode.to_string()),
+    ];
+
+    if let Some(header) = &info.header {
+        archive_fields.push(FieldRow::new(
+            "magic",
+            String::from_utf8_lossy(&header.magic).into_owned(),
+        ));
+        archive_fields.push(FieldRow::new("version", format_u32_dec_hex(header.version)));
+        archive_fields.push(FieldRow::new("entry_count", header.entry_count.to_string()));
+        archive_fields.push(FieldRow::new(
+            "total_size",
+            format!("{} (0x{:08X})", header.total_size, header.total_size),
+        ));
+        archive_fields.push(FieldRow::new(
+            "directory_offset",
+            header.directory_offset.to_string(),
+        ));
+        archive_fields.push(FieldRow::new(
+            "directory_size",
+            header.directory_size.to_string(),
+        ));
+    }
+
+    let mut entries = Vec::new();
+    for entry in archive.entries_inspect() {
+        let meta = entry.meta;
+        let mut fields = vec![
+            FieldRow::new("id", entry.id.0.to_string()),
+            FieldRow::new("name", meta.name.clone()),
+            FieldRow::new("type_id", format_u32_dec_hex(meta.kind)),
+            FieldRow::new("attr1", format_u32_dec_hex(meta.attr1)),
+            FieldRow::new("attr2", format_u32_dec_hex(meta.attr2)),
+            FieldRow::new("attr3", format_u32_dec_hex(meta.attr3)),
+            FieldRow::new("data_offset", meta.data_offset.to_string()),
+            FieldRow::new("data_size", meta.data_size.to_string()),
+            FieldRow::new("sort_index", meta.sort_index.to_string()),
+            FieldRow::new("name_raw_hex", bytes_as_hex(entry.name_raw)),
+            FieldRow::new("name_raw_ascii", bytes_as_ascii(entry.name_raw)),
+        ];
+
+        fields.push(FieldRow::new("find_key", meta.name.to_ascii_lowercase()));
+
+        entries.push(EntryView {
+            full_name: meta.name.clone(),
+            panel_title: format!("NRes entry #{}: {}", entry.id.0, meta.name),
+            fields,
+        });
+    }
+
+    let tree_rows = build_tree_rows(&entries);
+
+    Ok(DocumentModel {
+        path: path.to_path_buf(),
+        format: ArchiveFormat::Nres,
+        archive_fields,
+        entries,
+        tree_rows,
+        selected: Selection::Archive,
+    })
+}
+
+fn load_rsli_document(path: &Path) -> Result<DocumentModel, String> {
+    let library = rsli::Library::open_path(path)
+        .map_err(|err| format!("RsLi open failed for {}: {err}", path.display()))?;
+
+    let header = library.header();
+    let mut archive_fields = vec![
+        FieldRow::new("format", "RsLi"),
+        FieldRow::new("magic", String::from_utf8_lossy(&header.magic).into_owned()),
+        FieldRow::new(
+            "reserved",
+            format!("{} (0x{:02X})", header.reserved, header.reserved),
+        ),
+        FieldRow::new(
+            "version",
+            format!("{} (0x{:02X})", header.version, header.version),
+        ),
+        FieldRow::new("entry_count", header.entry_count.to_string()),
+        FieldRow::new("presorted_flag", format!("0x{:04X}", header.presorted_flag)),
+        FieldRow::new("xor_seed", format!("0x{:08X}", header.xor_seed)),
+        FieldRow::new("header_raw_hex", bytes_as_hex(&header.raw)),
+    ];
+
+    if let Some(ao) = library.ao_trailer() {
+        archive_fields.push(FieldRow::new("ao_trailer", "present"));
+        archive_fields.push(FieldRow::new("ao_overlay", ao.overlay.to_string()));
+        archive_fields.push(FieldRow::new("ao_raw_hex", bytes_as_hex(&ao.raw)));
+    } else {
+        archive_fields.push(FieldRow::new("ao_trailer", "absent"));
+    }
+
+    let mut entries = Vec::new();
+    for entry in library.entries_inspect() {
+        let meta = entry.meta;
+        let method_raw = (meta.flags as u16 as u32) & 0x1E0;
+
+        let fields = vec![
+            FieldRow::new("id", entry.id.0.to_string()),
+            FieldRow::new("name", meta.name.clone()),
+            FieldRow::new(
+                "flags",
+                format!("{} (0x{:04X})", meta.flags, meta.flags as u16),
+            ),
+            FieldRow::new("method", format!("{:?}", meta.method)),
+            FieldRow::new("method_raw", format!("0x{:03X}", method_raw)),
+            FieldRow::new("packed_size", meta.packed_size.to_string()),
+            FieldRow::new("unpacked_size", meta.unpacked_size.to_string()),
+            FieldRow::new("data_offset_effective", meta.data_offset.to_string()),
+            FieldRow::new("data_offset_raw", entry.data_offset_raw.to_string()),
+            FieldRow::new("sort_to_original", entry.sort_to_original.to_string()),
+            FieldRow::new("name_raw_hex", bytes_as_hex(entry.name_raw)),
+            FieldRow::new("name_raw_ascii", bytes_as_ascii(entry.name_raw)),
+            FieldRow::new("service_tail_hex", bytes_as_hex(entry.service_tail)),
+            FieldRow::new("service_tail_ascii", bytes_as_ascii(entry.service_tail)),
+        ];
+
+        entries.push(EntryView {
+            full_name: meta.name.clone(),
+            panel_title: format!("RsLi entry #{}: {}", entry.id.0, meta.name),
+            fields,
+        });
+    }
+
+    let tree_rows = build_tree_rows(&entries);
+
+    Ok(DocumentModel {
+        path: path.to_path_buf(),
+        format: ArchiveFormat::Rsli,
+        archive_fields,
+        entries,
+        tree_rows,
+        selected: Selection::Archive,
+    })
+}
+
+fn build_tree_rows(entries: &[EntryView]) -> Vec<TreeRow> {
+    let mut root = FolderNode::default();
+    for (index, entry) in entries.iter().enumerate() {
+        insert_tree_path(&mut root, &entry.full_name, index);
+    }
+
+    let mut rows = vec![TreeRow {
+        depth: 0,
+        label: String::from("[Archive fields]"),
+        selection: Some(Selection::Archive),
+    }];
+
+    flatten_tree(&root, 0, &mut rows);
+    rows
+}
+
+fn insert_tree_path(root: &mut FolderNode, full_name: &str, entry_index: usize) {
+    let mut parts: Vec<&str> = full_name
+        .split(['/', '\\'])
+        .filter(|part| !part.is_empty())
+        .collect();
+
+    if parts.is_empty() {
+        parts.push(full_name);
+    }
+
+    if parts.len() == 1 {
+        root.files.push((parts[0].to_string(), entry_index));
+        return;
+    }
+
+    let file_name = parts.pop().unwrap_or(full_name);
+    let mut node = root;
+    for part in parts {
+        node = node.folders.entry(part.to_string()).or_default();
+    }
+
+    node.files.push((file_name.to_string(), entry_index));
+}
+
+fn flatten_tree(node: &FolderNode, depth: u16, out: &mut Vec<TreeRow>) {
+    for (folder_name, folder_node) in &node.folders {
+        out.push(TreeRow {
+            depth,
+            label: format!("{folder_name}/"),
+            selection: None,
+        });
+        flatten_tree(folder_node, depth.saturating_add(1), out);
+    }
+
+    let mut files = node.files.clone();
+    files.sort_by(|left, right| left.0.cmp(&right.0));
+
+    for (name, index) in files {
+        out.push(TreeRow {
+            depth,
+            label: name,
+            selection: Some(Selection::Entry(index)),
+        });
+    }
+}
+
+fn bytes_as_hex(bytes: &[u8]) -> String {
+    let mut out = String::new();
+    for (index, byte) in bytes.iter().enumerate() {
+        if index > 0 {
+            out.push(' ');
+        }
+        let _ = write!(&mut out, "{byte:02X}");
+    }
+    out
+}
+
+fn bytes_as_ascii(bytes: &[u8]) -> String {
+    bytes
+        .iter()
+        .map(|byte| {
+            if byte.is_ascii_graphic() || *byte == b' ' {
+                char::from(*byte)
+            } else {
+                '.'
+            }
+        })
+        .collect()
+}
+
+fn format_u32_dec_hex(value: u32) -> String {
+    format!("{} (0x{:08X})", value, value)
+}
+
+#[derive(Debug, Clone)]
+struct DocumentModel {
+    path: PathBuf,
+    format: ArchiveFormat,
+    archive_fields: Vec<FieldRow>,
+    entries: Vec<EntryView>,
+    tree_rows: Vec<TreeRow>,
+    selected: Selection,
+}
+
+#[derive(Debug, Clone, Copy)]
+enum ArchiveFormat {
+    Nres,
+    Rsli,
+}
+
+impl ArchiveFormat {
+    fn label(self) -> &'static str {
+        match self {
+            Self::Nres => "NRes",
+            Self::Rsli => "RsLi",
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+struct EntryView {
+    full_name: String,
+    panel_title: String,
+    fields: Vec<FieldRow>,
+}
+
+#[derive(Debug, Clone)]
+struct FieldRow {
+    key: String,
+    value: String,
+}
+
+impl FieldRow {
+    fn new(key: impl Into<String>, value: impl Into<String>) -> Self {
+        Self {
+            key: key.into(),
+            value: value.into(),
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+struct TreeRow {
+    depth: u16,
+    label: String,
+    selection: Option<Selection>,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+enum Selection {
+    Archive,
+    Entry(usize),
+}
+
+#[derive(Default, Debug)]
+struct FolderNode {
+    folders: BTreeMap<String, FolderNode>,
+    files: Vec<(String, usize)>,
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn tree_builds_nested_paths() {
+        let entries = vec![
+            EntryView {
+                full_name: String::from("textures/ui/hud.texm"),
+                panel_title: String::new(),
+                fields: vec![],
+            },
+            EntryView {
+                full_name: String::from("textures/world/ground.texm"),
+                panel_title: String::new(),
+                fields: vec![],
+            },
+            EntryView {
+                full_name: String::from("root_file.msh"),
+                panel_title: String::new(),
+                fields: vec![],
+            },
+        ];
+
+        let rows = build_tree_rows(&entries);
+        assert!(rows.iter().any(|row| row.label == "textures/"));
+        assert!(rows.iter().any(|row| row.label == "ui/"));
+        assert!(rows.iter().any(|row| row.label == "hud.texm"));
+        assert!(rows.iter().any(|row| row.label == "root_file.msh"));
+    }
+}