Merge pull request #730 from ueokande/refactor-console-and-completion

Refactor console and completions

2 files changed, 90 insertions, 0 deletions

diff --git a/src/console/commandline/CommandLineParser.ts b/src/console/commandline/CommandLineParser.ts
new file mode 100644
index 0000000..a166f49
--- /dev/null
+++ b/src/console/commandline/CommandLineParser.ts
@@ -0,0 +1,38 @@
+import CommandParser from "./CommandParser";
+import { Command } from "../../shared/Command";
+
+export type CommandLine = {
+  readonly command: Command,
+  readonly args: string
+}
+
+export enum InputPhase {
+  OnCommand,
+  OnArgs,
+}
+
+export default class CommandLineParser {
+  private commandParser: CommandParser = new CommandParser();
+
+  inputPhase(line: string): InputPhase {
+    line = line.trimLeft();
+    if (line.length == 0) {
+      return InputPhase.OnCommand
+    }
+    const command = line.split(/\s+/, 1)[0];
+    if (line.length == command.length) {
+      return InputPhase.OnCommand
+    }
+    return InputPhase.OnArgs;
+  }
+
+  parse(line: string): CommandLine {
+    const trimLeft = line.trimLeft();
+    const command = trimLeft.split(/\s+/, 1)[0];
+    const args = trimLeft.slice(command.length).trimLeft();
+    return {
+      command: this.commandParser.parse(command),
+      args: args,
+    }
+  }
+}
diff --git a/src/console/commandline/CommandParser.ts b/src/console/commandline/CommandParser.ts
new file mode 100644
index 0000000..5228c77
--- /dev/null
+++ b/src/console/commandline/CommandParser.ts
@@ -0,0 +1,52 @@
+import { Command } from "../../shared/Command";
+
+export class UnknownCommandError extends Error {
+  constructor(value: string) {
+    super(`unknown command '${value}'`);
+  }
+}
+
+export default class CommandParser {
+  parse(value: string): Command {
+    switch (value) {
+    case 'o':
+    case 'open':
+      return Command.Open;
+    case 't':
+    case 'tabopen':
+      return Command.TabOpen;
+    case 'w':
+    case 'winopen':
+      return Command.WindowOpen;
+    case 'b':
+    case 'buffer':
+      return Command.Buffer;
+    case 'bd':
+    case 'bdel':
+    case 'bdelete':
+      return Command.BufferDelete;
+    case 'bd!':
+    case 'bdel!':
+    case 'bdelete!':
+      return Command.BufferDeleteForce;
+    case 'bdeletes':
+      return Command.BuffersDelete;
+    case 'bdeletes!':
+      return Command.BuffersDeleteForce;
+    case 'addbookmark':
+      return Command.AddBookmark;
+    case 'q':
+    case 'quit':
+      return Command.Quit;
+    case 'qa':
+    case 'quitall':
+      return Command.QuitAll;
+    case 'set':
+      return Command.Set;
+    case 'h':
+    case 'help':
+      return Command.Help;
+    }
+    throw new UnknownCommandError(value);
+  }
+}