feat: add 13 new builtin extensions (sources, previewers, renderers)

builtin/source/colorscheme.ts

@@ -0,0 +1,79 @@
+import * as fn from "@denops/std/function";
+
+import { defineSource, type Source } from "../../source.ts";
+
+type Detail = {
+  /**
+   * Colorscheme name
+   */
+  name: string;
+
+  /**
+   * Whether this is the current colorscheme
+   */
+  current: boolean;
+};
+
+export type ColorschemeOptions = {
+  /**
+   * Whether to mark the current colorscheme.
+   * @default true
+   */
+  markCurrent?: boolean;
+
+  /**
+   * The indicator string for the current colorscheme.
+   * @default "> "
+   */
+  indicator?: string;
+};
+
+/**
+ * Creates a Source that generates items from available Vim colorschemes.
+ *
+ * This Source retrieves all available colorschemes and generates items
+ * for each one, optionally marking the currently active colorscheme.
+ *
+ * @param options - Options to customize colorscheme listing.
+ * @returns A Source that generates items representing colorschemes.
+ */
+export function colorscheme(
+  options: Readonly<ColorschemeOptions> = {},
+): Source<Detail> {
+  const markCurrent = options.markCurrent ?? true;
+  return defineSource(async function* (denops, _params, { signal }) {
+    // Get list of all colorschemes
+    const colorschemes = await fn.getcompletion(
+      denops,
+      "",
+      "color",
+    ) as string[];
+    signal?.throwIfAborted();
+
+    // Get current colorscheme if needed
+    let currentColorscheme = "";
+    if (markCurrent) {
+      const colors = await fn.execute(denops, "colorscheme") as string;
+      // Extract colorscheme name from output (removes whitespace and newlines)
+      currentColorscheme = colors.trim();
+    }
+
+    const items = colorschemes.map((name, index) => {
+      const isCurrent = markCurrent && name === currentColorscheme;
+      const indicator = options.indicator ?? "> ";
+      const prefix = isCurrent ? indicator : " ".repeat(indicator.length);
+      const suffix = isCurrent ? " (current)" : "";
+
+      return {
+        id: index,
+        value: `${prefix}${name}${suffix}`,
+        detail: {
+          name,
+          current: isCurrent,
+        },
+      };
+    });
+
+    yield* items;
+  });
+}

builtin/source/mod.ts

@@ -1,5 +1,6 @@
 // This file is generated by gen-mod.ts
 export * from "./buffer.ts";
+export * from "./colorscheme.ts";
 export * from "./file.ts";
 export * from "./helptag.ts";
 export * from "./history.ts";