Public archive for the Return to Ritherdon project.
https://www.nicolaellisandritherdon.com
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64 lines
2.0 KiB
64 lines
2.0 KiB
(in-package #:cl-user) |
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(defpackage #:utils |
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(:use #:cl |
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#:caveman2 |
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#:log4cl) |
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(:export #:i18n-load |
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#:_ |
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#:parse-iso-date |
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#:request-params |
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#:string-is-nil-or-empty? |
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#:separate-files-in-web-request |
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#:set-alert |
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#:get-alert |
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#:get-and-reset-alert) |
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(:documentation "Utilities that do not depend on models.")) |
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(in-package #:utils) |
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(defun asciify (string) |
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(str:downcase (slug:asciify string))) |
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(defun request-params (request) |
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(loop :for (key . value) :in request |
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:collect (let ((*package* (find-package :keyword))) |
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(read-from-string key)) |
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:collect value)) |
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(defun string-is-nil-or-empty? (string-to-test) |
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"Tests to see if `STRING-TO-TEST' is empty of just whitespace. |
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This is essentially the 'IsNullOrWhiteSpace' function I use in C#. It |
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expands the 'empty string' check to include a check to see if there is |
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string with just a '(white) space' in it." |
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(if (or (string= string-to-test " ") |
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(zerop (length string-to-test)) |
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(null string-to-test)) |
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t |
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nil)) |
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(defun separate-files-in-web-request (request &optional request-value) |
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"Creates a new list of 'upload' files from a web `REQUEST'. |
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You will mostly use this for processing a multi-file upload (HTML) |
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form. The standard value for the 'name' attribute in (file) input tag |
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in the HTML form is `CONTENT-FILES' but you can use a different |
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name. Just specify it in this function's `REQUEST-VALUE' argument." |
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(loop :for item :in request |
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if (or (string= "CONTENT-FILES" (car item)) |
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(string= request-value (car item))) |
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collect item)) |
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(defun set-alert (message) |
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"Sets the alert `MESSAGE' stored in session, provide info. to users. |
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The intention is store a `MESSAGE' across a redirect during a HTTP |
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POST request." |
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(setf (gethash :alert ningle:*session*) message)) |
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(defun get-alert () |
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"Get alert message from session data." |
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(gethash :alert ningle:*session*)) |
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(defun get-and-reset-alert () |
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"Returns the `ALERT' message and clears its content from the session hash." |
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(let ((message (get-alert))) |
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(set-alert nil) |
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message))
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