"
I contain simple general functionality used by Grafoscopio, Dataviz 
or other related projects.
"
Class {
	#name : #GrafoscopioUtils,
	#superclass : #Object,
	#category : #'Grafoscopio-Utils'
}

{ #category : #'graphical interface' }
GrafoscopioUtils class >> downloadingFrom: downloadUrl withMessage: aString into: location [
	| fileName |
	fileName := downloadUrl segments last.
	(location / fileName) ensureDelete.
	[: bar |
		bar title: aString.
		[ZnClient new
			enforceHttpSuccess: true;
			url: downloadUrl;
			downloadTo: location;
			signalProgress: true
		]
			on: HTTPProgress  
			do: [ :progress |
				progress isEmpty ifFalse: [ bar current: progress percentage ].
				progress resume ].
	] asJob run.
]

{ #category : #private }
GrafoscopioUtils class >> sanitize: url [
	"I remove white spaces in url's and prepend 'http://' to urls when it is ommited, so
	operations that rely on sane and well formed urls don't throw error messages."
	| sanitized modUrl |
	modUrl := url.
	[modUrl endsWith: ' ']
		whileTrue: [ modUrl := modUrl copyFrom: 1 to: (modUrl size - 1)  ].
	(url beginsWith: 'http://') 
		ifFalse: [ sanitized := ('http://', modUrl) asUrl ]
		ifTrue: [ sanitized := modUrl asUrl ].
	^ sanitized
]

{ #category : #updating }
GrafoscopioUtils class >> update [
	"Updates GrafoscopioUtils with new versions of itself take from the source code repository."
	Gofer new 
		smalltalkhubUser: 'Offray' project: 'Grafoscopio';
   		package: 'GrafoscopioUtils';
    	load.
]