1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: modlisp -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
6 ;;;; Purpose: Utility functions for modlisp package
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Dec 2002
10 ;;;; $Id: utils.lisp,v 1.7 2003/07/16 20:40:43 kevin Exp $
11 ;;;; *************************************************************************
13 (in-package #:modlisp)
15 (defun format-string (fmt)
22 (defmacro with-ml-page ((&key (format :html) (precompute t) headers)
24 (let ((fmt (gensym "FMT-"))
25 (precomp (gensym "PRE-"))
26 (result (gensym "RES-"))
27 (outstr (gensym "STR-"))
28 (stream (gensym "STRM-"))
29 (hdr (gensym "HDR-")))
31 (,precomp ,precompute)
32 ,result ,outstr ,stream)
33 (declare (ignorable ,stream))
34 (write-header-line "Status" "200 OK")
35 (write-header-line "Content-Type" (format-string ,fmt))
36 (dolist (,hdr ,headers)
37 (write-header-line (car ,hdr) (cdr ,hdr)))
39 (write-string "end" *modlisp-socket*)
40 (write-char #\NewLine *modlisp-socket*))
42 (with-output-to-string (,stream)
43 (let ((*modlisp-socket* (if ,precomp
46 (setq ,result (progn ,@body)))))
49 (write-header-line "Content-Length"
50 (write-to-string (length ,outstr)))
51 (write-header-line "Keep-Socket" "1")
52 (write-header-line "Connection" "Keep-Alive")
53 (write-string "end" *modlisp-socket*)
54 (write-char #\NewLine *modlisp-socket*)
55 (write-string ,outstr *modlisp-socket*)
56 (finish-output *modlisp-socket*)
57 (setq *close-modlisp-socket* nil))
59 (finish-output *modlisp-socket*)
60 (setq *close-modlisp-socket* t)))
63 (defun redirect-to-location (url)
64 (write-header-line "Status" "302 Redirect")
65 (write-header-line "Location" url)
66 (write-string "end" *modlisp-socket*)
67 (write-char #\NewLine *modlisp-socket*)
68 (force-output *modlisp-socket*)
69 (setq *close-modlisp-socket* t))
71 (defun output-ml-page (format html)
72 (write-header-line "Status" "200 OK")
73 (write-header-line "Content-Type" (format-string format))
74 (write-header-line "Content-Length" (format nil "~d" (length html)))
75 (write-header-line "Keep-Socket" "1")
76 (write-header-line "Connection" "Keep-Alive")
77 (write-string "end" *modlisp-socket*)
78 (write-char #\NewLine *modlisp-socket*)
79 (write-string html *modlisp-socket*)
80 (force-output *modlisp-socket*)
81 (setq *close-modlisp-socket* nil))
83 (defun output-html-page (str)
84 (output-ml-page :html str))
86 (defun output-xml-page (str)
87 (output-ml-page :xml str))
89 ;; Utility functions for library users
91 (defun query-to-alist (posted-string)
92 "Converts a posted string to an assoc list of keyword names and values,
93 \"a=1&bc=demo\" => ((:a . \"1\") (:bc . \"demo\"))"
96 (dolist (name=val (kmrcl:delimited-string-to-list posted-string #\&)
98 (let ((name-val-list (kmrcl:delimited-string-to-list name=val #\=)))
99 (if (= 2 (length name-val-list))
100 (destructuring-bind (name val) name-val-list
101 (push (cons (kmrcl:ensure-keyword name)
102 (kmrcl:decode-uri-query-string val))
104 (cmsg-c :debug "Invalid number of #\= in ~S" name-val-list)))))))