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std.file.dir_entries - multiple declarations
- Function dirEntries
- Function dirEntries
Function dirEntries
Convenience wrapper for filtering file names with a glob pattern.
Prototype
auto std.algorithm. iteration. FilterResult!(boolstd.file.dirEntries(string,string,std.file.SpanMode,bool).f(std.file.DirEntry),std.file.DirIterator) dirEntries( string path, string pattern, SpanMode mode, bool followSymlink = true );
Parameters
| Name | Description |
|---|---|
| path | The directory to iterate over. |
| pattern | String with wildcards, such as "*.d". The supported wildcard strings are described under std.path.globMatch. |
| mode | Whether the directory's sub-directories should be iterated over depth-first (depth), breadth-first (breadth), or not at all (shallow). |
| followSymlink | Whether symbolic links which point to directories should be treated as directories and their contents iterated over. |
Throws
FileException
Examples
// Iterate over all D source files in current directory and all its
// subdirectories
auto dFiles = dirEntries(".","*.{d,di}",SpanMode.depth);
foreach(d; dFiles)
writeln(d.name);
Function dirEntries
Returns an input range of DirEntry that lazily iterates a given directory,
also provides two ways of foreach iteration. The iteration variable can be of
type string if only the name is needed, or DirEntry
if additional details are needed. The span mode dictates the how the
directory is traversed. The name of the each directory entry iterated
contains the absolute path.
Prototype
auto std.file. DirIterator dirEntries( string path, SpanMode mode, bool followSymlink = true );
Parameters
| Name | Description |
|---|---|
| path | The directory to iterate over. |
| mode | Whether the directory's sub-directories should be iterated over depth-first (depth), breadth-first (breadth), or not at all (shallow). |
| followSymlink | Whether symbolic links which point to directories should be treated as directories and their contents iterated over. |
Throws
FileException
Examples
// Iterate a directory in depth foreach (string name; dirEntries("destroy/me", SpanMode.depth)) { remove(name); } // Iterate a directory in breadth foreach (string name; dirEntries(".", SpanMode.breadth)) { writeln(name); } // Iterate a directory and get detailed info about it foreach (DirEntry e; dirEntries("dmd-testing", SpanMode.breadth)) { writeln(e.name, "\t", e.size); } // Iterate over all *.d files in current directory and all its subdirectories auto dFiles = dirEntries(".", SpanMode.depth).filter!(f => f.name.endsWith(".d")); foreach(d; dFiles) writeln(d.name); // Hook it up with std.parallelism to compile them all in parallel: foreach(d; parallel(dFiles, 1)) //passes by 1 file to each thread { string cmd = "dmd -c " ~ d.name; writeln(cmd); std.process.system(cmd); }
Example
Duplicate functionality of D1's std.file.listdir():
string[] listdir(string pathname)
{
import std.file;
import std.path;
import std.algorithm;
import std.array;
return std.file.dirEntries(pathname, SpanMode.shallow)
.filter!(a => a.isFile)
.map!(a => std.path.baseName(a.name))
.array;
}
void main(string[] args)
{
import std.stdio;
string[] files = listdir(args[1]);
writefln("%s", files);
}
Authors
Walter Bright, Andrei Alexandrescu, Jonathan M Davis