O$5.1.1 Loading image file to a variable using HTTPRead.

hi mike.

if y are using something like httpPage to grab a web page, there is no easier way to get what you want other than to parse the web page and look for the items in it you want — as well as dealing with thinks liker 404 (page not found) and 503 (page redirects) etc.

thats just the way of things when parsing a URL

if the site offers a REST API — then you can grab things in a programatic way and in a format you like (like JSON or XML) …

oBrowser is not a way to get web pages — its a way to display them in omnis.

Doug Easterbrook
Arts Management Systems Ltd.
mailto:doug@artsman.com
www.artsman.com
Phone (403) 650-1978

> On Jul 3, 2017, at 2:02 PM, Mike Matthews <omnis@lineal.co.uk> wrote:
>
> Has anyone an easier, more workable solution to retrieving an image from a website please?
>
> I have the URL of the image as:
> www.plastimo.com/media/catalog/product/e/c/eclate_pieces_detachees_enrouleur_1.jpg <www.plastimo.com/media/catalog/product/e/c/eclate_pieces_detachees_enrouleur_1.jpg>
>
> and I want to be able to save the image on my local PC. I get so far, I can connect, get back both binary data and the full HTML text. But I was hoping with v8, there would be an easier way now. Would this oBrowser object be a saviour perhaps?
>
> Thank you
>
> Mike
>
>
>
> Mike Matthews, Managing Director, Lineal Software Solutions Ltd
>
> Apple Reseller, Microsoft Partner, SQLWorks Business Partner
> phone: 01271 375999 | web: lineal.co.uk <www.lineal.co.uk/> | email: mike.matthews@lineal.co.uk <mailto:mike.matthews@lineal.co.uk>
>> On 24 Oct 2011, at 00:33, George Panagopoulos <eyeway1@otenet.gr> wrote:
>>
>> Hi Mark,
>>
>> Unfortunately it didn’t work for me, but I found a workaround wich is working( at least it looks like it does!)
>>
>> Here is the code I used to make it work.
>>
>> HTTPSplitURL (ivPictureLink,lvHost,lvURI)
>> HTTPGet (lvHost,lvURI) Returns lvSocket
>> HTTPRead (lvSocket,ivBuffer,2) Returns lvByteCount
>> HTTPPage (ivPictureLink) Returns ivHTMLText
>> HTTPClose (lvSocket)
>> Calculate lvPosition as pos(‘Content-Length:’,ivHTMLText)
>> Calculate lvSize as mid(ivHTMLText,lvPosition+15,7)
>> Calculate lvOffset as lvByteCount-lvSize
>> Calculate ivPicture as bytemid(ivBuffer,lvOffset,lvByteCount)
>> Calculate ivPictureConv as pictconvfrom(‘cs24’,ivPicture)
>>
>> Thank you for your help. Your suggestion gave me the idea for the code above.
>>
>> Regards,
>>
>> George
>>
>> On 20/10/2011 22:22, Mark Watson wrote:
>>> Hi George,
>>>
>>> I’ve found that the http stuff from a picture download ends with
>>> chr(13),chr(10),chr(13),chr(10) – at least for jpg and png files, so try
>>> forming another binary variable containing everything after that character
>>> sewuence. For example, if lvBuffer is your downloaded binary, :
>>>
>>> Calculate lvBuffer2 as bytemid(
>>> lvBuffer,binsearch(con(chr(13),chr(10),chr(13),chr(10)),lvBuffer)+4,binlengt
>>> h(lvBuffer)-1)
>>>
>>> Mark Watson
>>>
>>>
>>> —–Message d’origine—–
>>> De : omnisdev-en-bounces@lists.omnis-dev.com
>>> [mailto:omnisdev-en-bounces@lists.omnis-dev.com] De la part de George
>>> Panagopoulos
>>> Envoyé : 20 octobre 2011 11:50
>>> À : OmnisDev List – English
>>> Objet : O$5.1.1 Loading image file to a variable using HTTPRead.
>>>
>>> Hi all,
>>>
>>> Here is the problem:
>>>
>>> I need to get an image file from a web site and load it to a variable so
>>> I can use it in an Omnis field.
>>>
>>> So far I came up with this code:
>>>
>>> HTTPSplitURL (ivPictureLink,lvHost,lvURI)
>>> HTTPGet (lvHost,lvURI) Returns lvSocket
>>> HTTPRead (lvSocket,ivBuffer,2) Returns lvByteCount
>>> HTTPClose (lvSocket)
>>>
>>> ivPictureLink is the URI for the picture file on the webserver. It’s
>>> something like that: eyeway.gr/picture.jpg
>>> I managed to get the binary file loaded in to ivBuffer variable of
>>> Binary type but is useless because it contains the HTTP header from the
>>> server. Is there any way to eliminate the header and keep the binary
>>> part of the response or even another way to do what I want to do? Please
>>> note, I would like to avoid using FTP.
>>>
>>> Thanks in advance.
>>>
>>> George
>>>
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