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(defpackage #:utils
(:use :cl
:log4cl)
(:export #:format-date
#:i18n-load
#:_
#:parse-iso-date
#:request-params
#:string-is-nil-or-empty-p
#:separate-files-in-web-request)
(:documentation "Utilities that do not depend on models."))
(in-package #:utils)
(defun format-date (date)
"Format the given date with the default date format (yyyy-mm-dd). Return a string."
(local-time:format-timestring nil date :format +date-y-m-d+))
(defun asciify (string)
(str:downcase (slug:asciify string)))
(defun request-params (request)
(loop :for (key . value) :in request
:collect (let ((*package* (find-package :keyword)))
(read-from-string key))
:collect value))
(defun string-is-nil-or-empty-p (string-to-test)
"Tests to see if `STRING-TO-TEST' is empty of just whitespace.
This is essentially the 'IsNullOrWhiteSpace' function I use in C#. It
expands the 'empty string' check to include a check to see if there is
string with just a '(white) space' in it."
(if (or (string= string-to-test " ")
(zerop (length string-to-test))
(null string-to-test))
t
nil))
(defun separate-files-in-web-request (request &optional request-value)
"Creates a new list of 'upload' files from a web `REQUEST'.
You will mostly use this for processing a multi-file upload (HTML)
form. The standard value for the 'name' attribute in (file) input tag
in the HTML form is `CONTENT-FILES' but you can use a different
name. Just specify it in this function's `REQUEST-VALUE' argument."
(loop :for item :in request
if (or (string= "CONTENT-FILES" (car item))
(string= request-value (car item)))
collect item))