Memory: parse quoted qmd command

src/utils/shell-argv.ts

@@ -0,0 +1,62 @@
+export function splitShellArgs(raw: string): string[] | null {
+  const tokens: string[] = [];
+  let buf = "";
+  let inSingle = false;
+  let inDouble = false;
+  let escaped = false;
+
+  const pushToken = () => {
+    if (buf.length > 0) {
+      tokens.push(buf);
+      buf = "";
+    }
+  };
+
+  for (let i = 0; i < raw.length; i += 1) {
+    const ch = raw[i];
+    if (escaped) {
+      buf += ch;
+      escaped = false;
+      continue;
+    }
+    if (!inSingle && !inDouble && ch === "\\") {
+      escaped = true;
+      continue;
+    }
+    if (inSingle) {
+      if (ch === "'") {
+        inSingle = false;
+      } else {
+        buf += ch;
+      }
+      continue;
+    }
+    if (inDouble) {
+      if (ch === '"') {
+        inDouble = false;
+      } else {
+        buf += ch;
+      }
+      continue;
+    }
+    if (ch === "'") {
+      inSingle = true;
+      continue;
+    }
+    if (ch === '"') {
+      inDouble = true;
+      continue;
+    }
+    if (/\s/.test(ch)) {
+      pushToken();
+      continue;
+    }
+    buf += ch;
+  }
+
+  if (escaped || inSingle || inDouble) {
+    return null;
+  }
+  pushToken();
+  return tokens;
+}