Efim Beshmenev
86 lines
2.5 KiB
Rust
86 lines
2.5 KiB
Rust
use std::path::{Path, PathBuf};
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use rfd::FileDialog;
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use winit::window::Window;
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const DEFAULT_FILE_NAME: &str = "map.json";
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/// Show the platform-native Save dialog. The caller owns the returned path and
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/// decides when to write, which keeps dialogs entirely out of unit tests.
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pub fn choose_map_save_path(window: &Window, current: Option<&Path>) -> Option<PathBuf> {
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let mut dialog = map_dialog(window, "Сохранить карту");
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if let Some(directory) = starting_directory(current) {
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dialog = dialog.set_directory(directory);
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}
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let suggested_name = current
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.and_then(Path::file_name)
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.and_then(|name| name.to_str())
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.unwrap_or(DEFAULT_FILE_NAME);
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dialog
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.set_file_name(suggested_name)
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.save_file()
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.map(ensure_json_extension)
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}
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/// Show the platform-native Open dialog for one versioned JSON map.
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pub fn choose_map_open_path(window: &Window, current: Option<&Path>) -> Option<PathBuf> {
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let mut dialog = map_dialog(window, "Открыть карту");
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if let Some(directory) = starting_directory(current) {
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dialog = dialog.set_directory(directory);
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}
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dialog.pick_file()
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}
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fn map_dialog(window: &Window, title: &str) -> FileDialog {
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FileDialog::new()
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.set_parent(window)
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.set_title(title)
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.add_filter("Карта Ray Marching (JSON)", &["json"])
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}
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fn starting_directory(current: Option<&Path>) -> Option<PathBuf> {
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current
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.and_then(|path| {
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if path.is_dir() {
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Some(path)
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} else {
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path.parent()
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}
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})
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.filter(|path| !path.as_os_str().is_empty())
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.map(Path::to_owned)
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.or_else(|| std::env::current_dir().ok())
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}
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pub(crate) fn ensure_json_extension(mut path: PathBuf) -> PathBuf {
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let is_json = path
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.extension()
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.and_then(|extension| extension.to_str())
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.is_some_and(|extension| extension.eq_ignore_ascii_case("json"));
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if !is_json {
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path.set_extension("json");
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}
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path
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn save_path_gets_one_json_extension() {
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assert_eq!(
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ensure_json_extension(PathBuf::from("level")),
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PathBuf::from("level.json")
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);
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assert_eq!(
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ensure_json_extension(PathBuf::from("level.JSON")),
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PathBuf::from("level.JSON")
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);
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assert_eq!(
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ensure_json_extension(PathBuf::from("level.txt")),
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PathBuf::from("level.json")
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);
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}
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}
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