I have a need to keep original source file unchanged after annotation processing, is it possible to get the original file stored in a/b/c/A.java to before being processed?
for example I have a class:
#xxx
class A {
}
I would like to get the original source code of the file before being processed. i tried to use
processingEnv.getFiler().getResource but it does not seem to work
Thanks.
Related
I'd like to print rdd data using scala such as below
res1.foreach{case(userid,tags)=>println(s"${userid}${"\t"}${tags.topicInterests.map(_.id).mkString(",")}")}
And now ,i want to save the detail to local file instead of println,how can i implement it?
Use saveAsTextFile() method of the RDD as shown below:
val strRdd = res1.map{case(userid,tags)=>(s"${userid}${"\t"}${tags.topicInterests.map(_.id).mkString(",")}")}
strRdd.saveAsTextFile("/home/test_user/result")
Note that, saveAsTextFile method takes a path(absolute or relative) to a folder/directory and not a file. The RDD data will be written as part files inside the given directory. In this case, a directory called result will be created with part files inside it.
There will be as many part files as the number of partitions in the strRdd. If the path /home/test_user/result already exists, your code will fail. So you will have to use a non-existing directory only.
Bonus info: The same saveAsTextFile method also works on other file systems like HDFS, S3 etc by taking the URL to the target directories instead of just paths.
What I'm trying to achieve is to intercept every write to a file and track the changes within the file. I want to track how much different the file content before and after the write.
So far in my minifilter driver I registered to IRP_MJ_WRITE callbacks and can now intercept writes to file. However I'm still not sure how can I obtain the content of the file before [preoperation] and the content after [postoperation].
The parameters that I have within the callback functions are:
PCFLT_RELATED_OBJECTS, PFLT_CALLBACK_DATA and I could not find anything related to the content of the file itself within these.
These are the operations that could change data in a file:
Modifying the file: IRP_MJ_WRITE, IRP_MJ_SET_INFORMATION ( specifically the FileEndOfFileInformation and FileValidDataLengthInformation information classes), IRP_MJ_FILE_SYSTEM_CONTROL ( specifically FSCTL_OFFLOAD_WRITE, FSCTL_WRITE_RAW_ENCRYPTED and FSCTL_SET_ZERO_DATA fsctl codes).
As for the content of the file itself that you just need to read it yourself.
If you mean the buffers as they are being written for example, check this out to find out more about the parameters of IRP_MJ_WRITE in the callback data. Esentially the buffer is at Data->Iopb->Parameters.Write.WriteBuffer/MdlAddress
Make sure you handle that memory correctly otherwise it will result a BSODs.
Good luck.
I have a Windows Forms .NET application in Visual Studio. Making a form "Localizable" adds a Form1.resx file nested below the form. I also want to add a separate .resx file for each form (Form1Resources.resx). This is used for custom form-specific resources, e.g. messages generated using the code behind.
This is set up as follows:
It would be tidier to nest the custom .resx file beneath the form (see this question for details about nest how to do this), as follows:
However, this results in the following error when I build the application:
Two output file names resolved to the same output path:
"obj\Debug\WindowsFormsApp1.Form1.resources" WindowsFormsApp1
I'm guessing that MSBuild uses some logic to find nested .resx files and generate .resources file based on its parent. Is there any way that this can be resolved?
Note that it is not possible to add custom messages to the Form1.resx file - this is for design-specific resources only and any resources that you add get overwritten when you save changes in design mode.
The error comes from the GenerateResource task because the 2 resx files (EmbeddedResource items in msbuild) passed both have the same ManifestResourceName metadata value. That values gets created by the CreateManifestResourceNames task and assumingly when it sees an EmbeddedResource which has the DependentUpon metadata set (to Form1.cs in your case) it always generates something of the form '$(RootNamespace).%(DependentUpon)': both your resx files end up with WindowsFormsApp1.Form1 as ManifestResourceName. Which could arguably be treated as the reason why having all resx files under Form1 is not tidier: it's not meant for it, requires extra fiddling, moreover it could be confusing for others since they'd typcially expect to contain the resx fils placed beneath a form to contain what it always does.
Anyway: there's at least 2 ways to work around this:
there's a Target called CreateCustomManifestResourceNames which is meant to be used for custom ManifestResourceName creation. A bit too much work for your case probably, just mentioning it for completeness
manually declare a ManifestResourceName yourself which doesn't clash with the other(s); if the metadata is already present it won't get overwritten by
Generic code sample:
<EmbeddedResource Include="Form1Resources.resx">
<DependentUpon>Form1.cs</DependentUpon>
<ManifestResourceName>$(RootNamespace).%(FileName)</ManifestResourceName>
...
</EmbeddedResource>
'pickAndStore' method allows me to specify full path to the file, but I don't know it's extension at this point (file path has to be defined before file is uploaded, so it's not possible to provide a path with correct extension).
if I use 'pick' and then 'store' I have 2 files (because both methods uploads file to the s3). I can delete 'old' file, but it's not optimal and can be pain (take ages) with really big files.
Is there any better solution? Ideally to rename existing file.
Currently, there is no workaround for renaming file.
However, in our Javascript API v2 we are planing to add new callback function. onStart callback will be fired after user pick file but before file uploading. There could be option like renaming file based on original filename.
We will keep you updated.
I have a large amount of data in an XML file, and I'd like to append data to this file without rewriting it every time. I already know how to write the entire file out, but I'm struggling with how to append data to this file. Do you have a suggestion for how to do this?
XML isn't a good format for this - if you append to a previously-complete document, it's no longer a complete document.
One option (depending on the APIs available to you) is not to write the root tag or document declaration, but to fake them when you read the file. So you'd have:
Fake document declaration
Fake root open tag
Real data from the file
Fake root close tag
Then you can just append elements to the end of your file at will. It will depend on what you're trying to do with this file though - and whether you can fake a stream input which effectively "tops and tails" the real data in the file.