How to convert Google spreadsheet's worksheet string id to integer index (GID)?

Question

To export google spreadsheet\'s single worksheet to CSV, integer worksheet index(GID) is required to be passed.

https://spreadsheets.google.com/feeds

Answer 1

This is a Clojure adaptation of Buho's and Julie's code which should work with both the new Google Sheets and with the legacy Google Spreadsheets.

(defn wid->gid [wid]
  (let [new-wid? (> (.length wid) 3)
        wid      (if new-wid? (.substring wid 1) wid)
        xor-val  (if new-wid? 474 31578)]
    (bit-xor (Integer/parseInt wid 36) xor-val)))

(defn gid->wid [gid]
  (let [new-gid? (> gid 31578)
        xor-val  (if new-gid? 474 31578)
        letter   (if new-gid? "o" "")]
    (str letter (Integer/toString (bit-xor gid xor-val) 36))))