file drag and drop

codex-cli/src/utils/image-detector.ts

@@ -0,0 +1,74 @@
+import { fileURLToPath } from "node:url";
+
+// ---------------------------------------------------------------------------
+// Helper to find image file paths inside free-form text that users may paste
+// or drag-drop into the terminal.  Returns the cleaned-up text (with the image
+// references removed) *and* the list of absolute or relative paths that were
+// found.
+// ---------------------------------------------------------------------------
+
+const IMAGE_EXT_REGEX =
+  "(?:png|jpe?g|gif|bmp|webp|svg)"; // deliberately kept simple
+
+// Pattern helpers – compiled lazily so the whole file can be tree-shaken if
+// unused by a particular build target.
+let MARKDOWN_LINK_RE: RegExp;
+let QUOTED_PATH_RE: RegExp;
+let BARE_PATH_RE: RegExp;
+
+function compileRegexes() {
+  if (MARKDOWN_LINK_RE) {
+    return;
+  }
+
+  MARKDOWN_LINK_RE = /!\[[^\]]*?\]\(([^)]+)\)/g; // capture path inside ()
+  QUOTED_PATH_RE = new RegExp(
+    `[\'\"]([^\'\"]+?\.${IMAGE_EXT_REGEX})[\'\"]`,
+    "gi",
+  );
+  // eslint-disable-next-line no-useless-escape
+  BARE_PATH_RE = new RegExp(
+    `\\b(?:\\.[\\/\\\\]|[\\/\\\\]|[A-Za-z]:[\\/\\\\])?[\\w-]+(?:[\\/\\\\][\\w-]+)*\\.${IMAGE_EXT_REGEX}\\b`,
+    "gi",
+  );
+}
+
+export interface ExtractResult {
+  paths: Array<string>;
+  text: string;
+}
+
+export function extractImagePaths(input: string): ExtractResult {
+  compileRegexes();
+
+  const paths: Array<string> = [];
+
+  let text = input;
+
+  const replace = (
+    re: RegExp,
+    mapper: (match: string, path: string) => string,
+  ) => {
+    text = text.replace(re, mapper);
+  };
+
+  // 1) Markdown ![alt](path)
+  replace(MARKDOWN_LINK_RE, (_m, p1: string) => {
+    paths.push(p1.startsWith("file://") ? fileURLToPath(p1) : p1);
+    return "";
+  });
+
+  // 2) Quoted
+  replace(QUOTED_PATH_RE, (_m, p1: string) => {
+    paths.push(p1.startsWith("file://") ? fileURLToPath(p1) : p1);
+    return "";
+  });
+
+  // 3) Bare
+  replace(BARE_PATH_RE, (match: string) => {
+    paths.push(match.startsWith("file://") ? fileURLToPath(match) : match);
+    return "";
+  });
+
+  return { paths, text };
+}