BuckArgsMethods (Buck)

java.lang.Object
- com.facebook.buck.support.cli.args.BuckArgsMethods

```
public class BuckArgsMethods
extends Object
```
Utility class for methods related to args handling.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static com.google.common.collect.ImmutableList<String>`	`expandAtFiles(Iterable<String> args, com.google.common.collect.ImmutableMap<CellName,AbsPath> cellMapping)`	Expand AT-file syntax in a way that matches what args4j does.
`static com.google.common.collect.ImmutableList<String>`	`filterArgs(List<String> args, com.google.common.collect.ImmutableSet<String> optionsToSkip)`	Drops options from the args array.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - expandAtFiles
```
public static com.google.common.collect.ImmutableList<String> expandAtFiles(Iterable<String> args,
                                                                            com.google.common.collect.ImmutableMap<CellName,AbsPath> cellMapping)
```
    Expand AT-file syntax in a way that matches what args4j does. We have this because we'd like to correctly log the arguments coming from the AT-files and there is no way to get the expanded args array from args4j.
    In addition to files passed using a regular @ syntax, this method also extracts command line arguments from AT-file syntax files passed via --flagfile command line option.
    
    Parameters:
    
    args - original args array
    
    cellMapping - a map from cell names to their roots
    
    Returns:
    
    args array with AT-files expanded.
  - filterArgs
```
public static com.google.common.collect.ImmutableList<String> filterArgs(List<String> args,
                                                                         com.google.common.collect.ImmutableSet<String> optionsToSkip)
```
    Drops options from the args array.
    
    Parameters:
    
    args - args array.
    
    optionsToSkip - if args contains an element from this array skip the element and the element immediately after it.
    
    Returns:
    
    filtered args array