[elpa] 32/119: url-encoded parameters

[Eric Schulte]

eschulte pushed a commit to branch master
in repository elpa.

commit e44dc579f213a7f80a8ebdcc5805fcf0170abf18
Author: Eric Schulte <address@hidden>
Date:   Fri Dec 20 19:22:31 2013 -0700

    url-encoded parameters
---
 NOTES                        |    6 +++---
 emacs-web-server.el          |   20 +++++++++++---------
 examples/5-url-param-echo.el |   26 ++++++++++++++++++++++++++
 3 files changed, 40 insertions(+), 12 deletions(-)

diff --git a/NOTES b/NOTES
index 07e7305..2b163c4 100644
--- a/NOTES
+++ b/NOTES
@@ -1,7 +1,7 @@
                                                            -*- org -*-
 
 * Notes
-* Tasks [4/8]
+* Tasks [5/8]
 ** DONE Handle POST requests
 1. read standard for POST data
 2. parse multi-line headers with boundaries
@@ -22,8 +22,8 @@ parse more than just the content-type headers.
 ** DONE non-multipart form data
 e.g., parameter strings
 
-** TODO some more convenience functionality [5/6]
-- [ ] strip and parse URL query string
+** DONE some more convenience functionality [6/6]
+- [X] strip and parse URL query string
 - [X] parse urlencoded post data
 - [X] think about defaulting to (name . content) for form elements
 - [X] maybe don't require a non-nil return to cancel the connection,
diff --git a/emacs-web-server.el b/emacs-web-server.el
index 2ceaf39..2d276d5 100644
--- a/emacs-web-server.el
+++ b/emacs-web-server.el
@@ -10,6 +10,7 @@
 (require 'emacs-web-server-status-codes)
 (require 'mail-parse)             ; to parse multipart data in headers
 (require 'mm-encode)              ; to look-up mime types for files
+(require 'url-util)               ; to decode url-encoded params
 (require 'eieio)
 (eval-when-compile (require 'cl))
 (require 'cl-lib)
@@ -112,8 +113,13 @@ function.
   (cl-flet ((to-keyword (s) (intern (concat ":" (upcase (match-string 1 s))))))
     (cond
      ((string-match ews-http-method-rx string)
-      (list (cons (to-keyword (match-string 1 string)) (match-string 2 string))
-            (cons :TYPE (match-string 3 string))))
+      (let ((method (to-keyword (match-string 1 string)))
+            (url (match-string 2 string)))
+        (if (string-match "?" url)
+            (cons (cons method (substring url 0 (match-beginning 0)))
+                  (url-parse-query-string (url-unhex-string
+                                           (substring url (match-end 0))) ))
+          (list (cons method url)))))
      ((string-match "^\\([^[:space:]]+\\): \\(.*\\)$" string)
       (list (cons (to-keyword string) (match-string 2 string))))
      (:otherwise (ews-error proc "bad header: %S" string) nil))))
@@ -165,13 +171,9 @@ function.
               (throw 'finished-parsing-headers t))
              ;; Parse a URL
              ((eq boundary :application/x-www-form-urlencoded)
-              (mapc (lambda (p)
-                      (when (string-match "=" p)
-                        (setcdr (last headers)
-                                (list (cons (substring p 0 (match-beginning 0))
-                                            (substring p (match-end 0)))))))
-                    (split-string (ews-trim (substring pending last-index))
-                                  "&" 'omit-nulls))
+              (mapc (lambda (pair) (setcdr (last headers) (list pair)))
+                    (url-parse-query-string
+                     (ews-trim (substring pending last-index))))
               (throw 'finished-parsing-headers t))
              ;; Build up multipart data.
              (boundary
diff --git a/examples/5-url-param-echo.el b/examples/5-url-param-echo.el
new file mode 100644
index 0000000..00c2e17
--- /dev/null
+++ b/examples/5-url-param-echo.el
@@ -0,0 +1,26 @@
+;;; url-param-echo.el --- echo back url-paramed message using Emacs Web Server
+
+;; Copyright (C) 2013 Eric Schulte <address@hidden>
+
+;; Author: Eric Schulte <address@hidden>
+;; Keywords: http url-param
+;; License: GPLV3 (see the COPYING file in this directory)
+
+;;; Code:
+(require 'emacs-web-server)
+
+(ews-start
+ '(((:GET . ".*") .
+    (lambda (proc request)
+      (ews-response-header proc 200 '("Content-type" . "text/html"))
+      (process-send-string proc
+        (concat "URL Parameters:</br><table><tr>"
+                (mapconcat (lambda (pair)
+                             (format "<th>%s</th><td>%s</td>"
+                                     (car pair)
+                                     (mapconcat #'identity (cdr pair) " ")))
+                           (cl-remove-if-not (lambda (el) (stringp (car el)))
+                                             request)
+                           "</tr><tr>")
+                "</tr></table>")))))
+ 9005)