Is it possible to save an image from a base64, with a file extension in the name?
As per
https://github.com/facebook/react-native/blob/master/Libraries/Image/RCTImageStoreManager.m#L54
it looks like the imageTag, i.e. file name, is constructed form the path and a simple incremental id. Extension is not considered.
Is there another way to append the extension, preferably with standard APIs?
Are you using RN's ImageStore? Don't know if this is the best way to do it, but the ImageStore will return the uri and you could use react-native-fs to read the base64 from that file and write it to whatever path/extension you would like it to have.
Don't forget to also removeImageForTag(uri) afterwards so you don't have both files.
react-native-fs: https://github.com/johanneslumpe/react-native-fs
Related
I'm using EvilDicom to grab DICOM data from my DB and transfer it out to a directory where it can be used another program. The secondary program checks in for new files periodically but I need to change a DICOM tag before it does.
I could have a temp location, change my tag, then resave it but I would rather change it while it is in memory and write it directly where it needs to go. I can't seem to figure out how to do that within the EvilDicom API.
Any suggestions?
(Following the basic code in "EvilDICOM in ESAPI" youtube video)
Take a look at the FileWriterSCP class. Just change the DIMSEService.CStorePayloadAction action which gives you the DICOM file in memory.
DIMSEService.CStorePayloadAction = (dcm, asc) =>
{
//DO STUFF WITH dcm variable HERE
}
The cleanest way is to not manipulate in memory because you rely on EvilDICOM's SCP to be robust, and since I made it, I can tell you its just "pretty good" ;) I would use a DICOM SCP like Varian's FileDaemon to catch and write files and then change them once they are on the hard-drive.
I need to access a local JSON file. Since Grails 2.4 implements the AssetPipeline plugin by default, I saved my local JSON file at:
/grails-app/assets/javascript/vendor/me/json/local.json
Now what I need is to generate a URL to this JSON file, to be used as a function parameter on my JavaScript's $.getJSON() . I've tried using:
var URL.local = ""${ raw(asset.assetPath(src: "local.json")) }";
but it generates an invalid link:
console.log(URL.local);
// prints /project/assets/local.json
// instead of /project/assets/vendor/me/json/local.json
I also encountered the same scenario with images that are handled by AssetPipeline1.9.9— that are supposed to be inserted dynamically on the page. How can I generate the URL pointing this resource? I know, I can always provide a static String for the URL, but it seems there would be a more proper solution.
EDIT
I was asked if I could move the local JSON file directly under the assets/javascript root directory instead of placing it under a subdirectory to for an easier solution. I prefer not to, for organization purposes.
Have you tried asset.assetPath(src: "/me/json/local.json")
The assets plugin looks in all of the immediate children of assets/. Your local.json file would need to be placed in /project/assets/foo/ for your current code to pick it up.
Check out the relevant documentation here which contains an example.
The first level deep within the assets folder is simply used for organization purposes and can contain folders of any name you wish. File types also don't need to be in any specific folder. These folders are omitted from the URL mappings and relative path calculations.
I need to process a (GCS) bucket of files, where each file is compressed and contains a single multi-line JSON record. Also, the name of the file being processed is significant and I need to know it within my transform.
Starting with examples in the docs, TextIO looks pretty close, but it looks like its designed to process each file line-by-line and does not allow me to read the entire file at once. Also, I don't see any way to get the filename that's being processed?
PCollectionTuple results = p.apply(TextIO.Read
.from("gs://bucket/a/*.gz")
.withCompressionType(TextIO.CompressionType.GZIP)
.withCoder(MyJsonCoder.of()))
Looks like I need to write a custom IO reader, or some such? Any tips for best place to start?
You are correct that right now none of the existing classes do exactly what you want. There are 2 reasonable approaches:
Match the filepattern yourself (using IOChannelUtils and IOChannelFactory) and wrap the resulting files into a PCollection<String> where the String will be a filename, using Create.of(filenames). Then apply a ParDo with a function which reads the given filename.
Write your own subclass of Source (there's also FileBasedSource, but it's not quite right for your use case). It would be configured by the filepattern, and splitIntoBundles would match the filepattern and expand into individual sources each corresponding to one file.
I would recommend the first approach because it seems like less code and your use case does not require the full power of Source.
I'm building an ASP.Net MVC4 application and the customer wants to be able to supply an XML configuration file, to configure a vendor list in the application, something like this:
<Vendor>
<Vendor name="ABC Computers" deliveryDays="10"/>
<Vendor name="XYZ Computers" deliveryDays="15"/>
</Vendors>
The file needs to be dropped onto a network location (i.e. not on the web server) and I don't have a database to import and store the data.
The customer also wants the ability to update it daily. So I'm thinking I'll have to do some kind of import (and validate the file) when the application starts up.
Any good ideas on the best way to accomplish this?
- The data needs to be quickly accessible
- Ideally I just want to import/store it once, or be able to access it quickly
- I need to be able to validate the file, so it might be prudent to be able to be able to switch to a backup
One thought was to use something like Entity Framework and simply read the file whenever I needed it, but if possible I'd hold it in memory in the application if possible.
Cheers
Vincent
No need to import it into a database or use Entity Framework. You can simply use .NET Xml Serialization to accomplish this.
The command line tool xsd.exe will generate c# classes from your Xml file. From the command line:
xsd.exe myfile.xml
xsd.exe /c myfile.xsd
The first command will infer and create an xml schema file (myfile.xsd) from your xml. The second command will convert the schema file to c# classes.
Then use the XmlSerializer class to deserialize your xml file into objects (assuming multiple objects in one file):
MyCollection myObjects= null;
string path = "mydata.xml";
XmlSerializer serializer = new XmlSerializer(typeof(MyCollection));
StreamReader reader = new StreamReader(path);
myObjects = (MyCollection)serializer.Deserialize(reader);
reader.Close();
You can use the .xsd file generated above to validate your xml files. Here's a link showing how: http://msdn.microsoft.com/en-us/library/ms162371.aspx.
I'm using JSFL to writing some script, I need parse json string from some config files, so I need the JSFL can parse json string, but JSFL seems can't do this. then I thinks to include some json lib, like json.js, to JSFL file.
Way can I include the json.js file to my JSFL file?
Sorry for my english.
The absolute bare minimum would be:
// #include Config._jsfl
var scriptPath = FLfile.uriToPlatformPath(fl.scriptURI);
var scriptPathEnd = scriptPath.lastIndexOf("\\");
scriptPath = scriptPath.slice(0, scriptPathEnd + 1);
fl.runScript(FLfile.platformPathToURI(scriptPath + "Config._jsfl")); /*jsl:import Config._jsfl*/
This is more or less copied from my code, JSL tags included. I make the extensions on any libraries to be ._jsfl so that if it's in Flash's Commands folder, they don't show up in the menu.
I wrote a set of static classes (a Logging system, URI conversions, array utility functions) and wrote a global include function using them to automatically convert a relative path to an absolute URI based upon the running scripts location so that I could just say include("file._jsfl"); to simplify my scripts. HOWEVER all my scripts have to do that first include as shown above to gain the include function. Since my include function relies on a handful of static classes, I've not pasted it here.
Edit: spelling error.
If the library is local, you can store it in a subfolder of your Flash config path, i.e.
C:\Users\username\AppData\Local\Adobe\Flash CS6\language\Configuration\jslibs
Then, it is quite easy to include it in a single line:
fl.runScript(fl.configURI + "jslibs/file.js");