接入原生壳文本文件导入能力

新增 file.importText HostBridge 契约和 H5 facade

移动端通过 Expo DocumentPicker 读取受控文本文件

桌面端通过 Tauri 文件选择框读取受控文本文件

更新壳能力检查、测试、方案文档和共享决策记录
This commit is contained in:
2026-06-18 04:51:56 +08:00
parent c7a24fba37
commit 1c6749b53e
16 changed files with 527 additions and 4 deletions

View File

@@ -145,6 +145,7 @@ const requiredMainSnippets = [
'"clipboard.writeText"',
'"clipboard.readText"',
'"file.exportText"',
'"file.importText"',
'"file.exportImage"',
'"file.importImage"',
'"file.imageDropped"',
@@ -157,6 +158,7 @@ const requiredMainSnippets = [
'"file import cancelled"',
'BASE64_STANDARD.decode',
'blocking_pick_file',
'import_text_file_payload',
'import_image_file_payload',
'set_title',
'set_badge_count',

View File

@@ -23,6 +23,7 @@ const WEB_APP_ORIGIN: &str = "https://app.genarrative.world";
const EXTERNAL_URL_PROTOCOLS: [&str; 4] = ["http:", "https:", "mailto:", "tel:"];
const EXPORT_TEXT_MAX_BYTES: usize = 5 * 1024 * 1024;
const EXPORT_IMAGE_MAX_BYTES: usize = 5 * 1024 * 1024;
const IMPORT_TEXT_MAX_BYTES: u64 = 5 * 1024 * 1024;
const IMPORT_IMAGE_MAX_BYTES: u64 = 10 * 1024 * 1024;
const EXPORT_FILE_NAME_FALLBACK: &str = "genarrative-export.txt";
const EXPORT_FILE_NAME_MAX_LENGTH: usize = 120;
@@ -104,6 +105,7 @@ fn capabilities() -> Vec<&'static str> {
"clipboard.writeText",
"clipboard.readText",
"file.exportText",
"file.importText",
"file.exportImage",
"file.importImage",
"file.imageDropped",
@@ -383,6 +385,54 @@ fn write_export_text_file(path: PathBuf, content: String) -> Result<usize, Strin
Ok(content.len())
}
fn import_text_mime_type(path: &Path) -> Option<&'static str> {
match path
.extension()
.and_then(|extension| extension.to_str())
.map(|extension| extension.to_ascii_lowercase())
.as_deref()
{
Some("txt") => Some("text/plain"),
Some("md") | Some("markdown") => Some("text/markdown"),
Some("csv") => Some("text/csv"),
Some("json") => Some("application/json"),
_ => None,
}
}
fn import_text_file_payload(path: PathBuf) -> Result<Value, String> {
if !path.is_file() {
return Err("text file is required".to_string());
}
let mime_type =
import_text_mime_type(&path).ok_or_else(|| "text MIME must be allowed".to_string())?;
let metadata = fs::metadata(&path).map_err(|error| error.to_string())?;
let byte_count = metadata.len();
if byte_count == 0 || byte_count > IMPORT_TEXT_MAX_BYTES {
return Err("text exceeds import size limit".to_string());
}
let content = fs::read_to_string(&path).map_err(|error| error.to_string())?;
let byte_count = content.len() as u64;
if byte_count == 0 || byte_count > IMPORT_TEXT_MAX_BYTES {
return Err("text exceeds import size limit".to_string());
}
let file_name = path
.file_name()
.and_then(|name| name.to_str())
.map(normalize_export_file_name)
.unwrap_or_else(|| "genarrative-import.txt".to_string());
Ok(json!({
"action": "selected",
"fileName": file_name,
"content": content,
"mimeType": mime_type,
"bytes": byte_count,
}))
}
fn export_image_extension(mime_type: &str) -> Option<&'static str> {
match mime_type {
"image/png" => Some("png"),
@@ -910,6 +960,27 @@ async fn host_bridge_request(
}),
)
}
"file.importText" => {
let file_path = app
.dialog()
.file()
.add_filter("Text", &["txt", "md", "markdown", "csv", "json"])
.blocking_pick_file();
let Some(file_path) = file_path else {
return failed(request.id, "cancelled", "file import cancelled");
};
let path = match file_path.into_path() {
Ok(path) => path,
Err(error) => return failed(request.id, "host_error", error.to_string()),
};
let import_result =
tauri::async_runtime::spawn_blocking(move || import_text_file_payload(path)).await;
match import_result {
Ok(Ok(payload)) => ok(request.id, payload),
Ok(Err(error)) => failed(request.id, "invalid_request", error),
Err(error) => failed(request.id, "host_error", error.to_string()),
}
}
"file.exportImage" => {
let (file_name, bytes) = match export_image_payload(&request) {
Ok(payload) => payload,
@@ -1153,6 +1224,10 @@ mod tests {
.as_array()
.unwrap()
.contains(&json!("file.exportText")));
assert!(result["capabilities"]
.as_array()
.unwrap()
.contains(&json!("file.importText")));
assert!(result["capabilities"]
.as_array()
.unwrap()
@@ -1457,6 +1532,57 @@ mod tests {
fs::remove_file(path).expect("remove export file");
}
#[test]
fn import_text_file_payload_reads_allowed_text_without_exposing_path() {
let path = std::env::temp_dir().join(format!(
"genarrative-host-bridge-import-text-{}.md",
std::process::id()
));
fs::write(&path, "暖灯猫街").expect("write import text");
let payload = import_text_file_payload(path.clone()).expect("payload");
assert_eq!(payload["action"], "selected");
assert_eq!(
payload["fileName"],
path.file_name().unwrap().to_str().unwrap()
);
assert_eq!(payload["content"], "暖灯猫街");
assert_eq!(payload["mimeType"], "text/markdown");
assert_eq!(payload["bytes"], "暖灯猫街".len() as u64);
assert!(!payload
.to_string()
.contains(path.to_string_lossy().as_ref()));
fs::remove_file(path).expect("remove import text");
}
#[test]
fn import_text_file_payload_rejects_invalid_or_oversized_text() {
let image_path = std::env::temp_dir().join(format!(
"genarrative-host-bridge-import-text-{}.png",
std::process::id()
));
fs::write(&image_path, "text").expect("write image-like text");
assert_eq!(
import_text_file_payload(image_path.clone()).unwrap_err(),
"text MIME must be allowed"
);
fs::remove_file(image_path).expect("remove image-like text");
let large_path = std::env::temp_dir().join(format!(
"genarrative-host-bridge-import-text-large-{}.txt",
std::process::id()
));
fs::write(&large_path, "a".repeat(IMPORT_TEXT_MAX_BYTES as usize + 1))
.expect("write large text");
assert_eq!(
import_text_file_payload(large_path.clone()).unwrap_err(),
"text exceeds import size limit"
);
fs::remove_file(large_path).expect("remove large text");
}
#[test]
fn export_image_payload_decodes_allowed_image_base64() {
let mut valid = request("file.exportImage");

View File

@@ -6,7 +6,7 @@
"build": {
"beforeDevCommand": "npm --prefix ../.. run dev:web",
"beforeBuildCommand": "npm --prefix ../.. run build:raw && npm run typecheck",
"devUrl": "http://127.0.0.1:3000/?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,appearance.getColorScheme,app.lifecycle,share.open,share.setTarget,navigation.openNativePage,app.openExternalUrl,app.setTitle,app.setBadgeCount,network.status,network.statusChanged,clipboard.writeText,clipboard.readText,file.exportText,file.exportImage,file.importImage,file.imageDropped,notification.showLocal",
"devUrl": "http://127.0.0.1:3000/?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,appearance.getColorScheme,app.lifecycle,share.open,share.setTarget,navigation.openNativePage,app.openExternalUrl,app.setTitle,app.setBadgeCount,network.status,network.statusChanged,clipboard.writeText,clipboard.readText,file.exportText,file.importText,file.exportImage,file.importImage,file.imageDropped,notification.showLocal",
"frontendDist": "../../../dist"
},
"app": {
@@ -14,7 +14,7 @@
{
"create": false,
"label": "main",
"url": "index.html?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,appearance.getColorScheme,app.lifecycle,share.open,share.setTarget,navigation.openNativePage,app.openExternalUrl,app.setTitle,app.setBadgeCount,network.status,network.statusChanged,clipboard.writeText,clipboard.readText,file.exportText,file.exportImage,file.importImage,file.imageDropped,notification.showLocal",
"url": "index.html?clientRuntime=native_app&clientType=native_app&hostShell=tauri_desktop&hostPlatform=unknown&hostVersion=0.1.0&bridgeVersion=1&hostCapabilities=host.getRuntime,appearance.getColorScheme,app.lifecycle,share.open,share.setTarget,navigation.openNativePage,app.openExternalUrl,app.setTitle,app.setBadgeCount,network.status,network.statusChanged,clipboard.writeText,clipboard.readText,file.exportText,file.importText,file.exportImage,file.importImage,file.imageDropped,notification.showLocal",
"title": "Genarrative",
"width": 1280,
"height": 820,