BrowseFiles Manual

Table of Contents

• About
• Allocation/Deallocation
• Use
  • Browse
  • File Info
• Further Reading

About

The BrowseFiles class provides means to iterate through the content of a directory.

Using the BrowseFiles class always follows the same concept:

• Allocate a BrowseFiles instance.
• Initializes the BrowseFiles instance via BrowseFiles::Init().
• Call BrowseFiles::GetNext() at least once (but most likely in a loop) to get the first/next element (if any).
• Use the below mentioned "File Info" functions on each element.

Note

For browsing files with the MAXON API see Url Manual.

  // This example demonstrates browsing a directory's content with BrowseFiles.
 
  // Let user select an arbitrary directory to browse.
  if (!folderName.FileSelect(FILESELECTTYPE::ANYTHING, FILESELECT::DIRECTORY, "Select a directory..."_s))
    return maxon::OK;
 
  // Allocate a BrowseFiles instance.
  AutoAlloc<BrowseFiles> bf;
  if (bf == nullptr)
    return maxon::OutOfMemoryError(MAXON_SOURCE_LOCATION);
 
  // Initialize the BrowseFiles instance.
  const Int32 bfFlags = BROWSEFILES_CALCSIZE;
  bf->Init(folderName, bfFlags);
 
  // Print the directory content.
  ApplicationOutput("Content of @", maxon::String(folderName.GetString()));
 
  while (bf->GetNext()) // Note: GetNext() needs to be called at least once, to get the first element.
  {
    maxon::String sIsBundle = "_"_s, sIsHidden = "_"_s, sIsReadOnly = "_"_s, sIsDir = "_"_s;
    maxon::String sSize = "dir"_s;
    LocalFileTime timeCreated;
    maxon::String sTimeCreated;
    maxon::String sAttr;
 
    // Gather file information flags.
    if (bf->IsBundle())
      sIsBundle = "b"_s;
    if (bf->IsHidden())
      sIsHidden = "h"_s;
    if (bf->IsReadOnly())
      sIsReadOnly = "r"_s;
    if (bf->IsDir())
      sIsDir = "d"_s;
    else
      sSize = maxon::String::MemorySizeToString(bf->GetSize());   // GetSize() is only valid for files.
 
    // Get creation time and convert it into a string.
    bf->GetFileTime(GE_FILETIME_CREATED, &timeCreated); // other options: GE_FILETIME_MODIFIED and GE_FILETIME_ACCESS
    sTimeCreated  = maxon::String::IntToString(timeCreated.year);
    sTimeCreated += "-"_s + maxon::String::IntToString(timeCreated.month);
    sTimeCreated += "-"_s + maxon::String::IntToString(timeCreated.day);
    sTimeCreated += " "_s + maxon::String::IntToString(timeCreated.hour);
    sTimeCreated += ":"_s + maxon::String::IntToString(timeCreated.minute);
    sTimeCreated += ":"_s + maxon::String::IntToString(timeCreated.second);
 
    // Call a small custom function to get a string with decoded file attributes, see File Functions Manual.
    FileGetAttributesString(folderName + bf->GetFilename(), sAttr) iferr_return;  // Note: Pass complete path to file here!
 
    // Finally print all information in one line.
    const maxon::String fileName = maxon::String(bf->GetFilename().GetFileString());
    ApplicationOutput("[@ @ @ @] - @ - @ - @ - @"_s, sIsDir, sIsBundle, sIsHidden, sIsReadOnly, sSize, sTimeCreated, sAttr, fileName);
  }

Allocation/Deallocation

BrowseFiles objects are created with the usual tools, see Entity Creation and Destruction Manual (Classic).

• BrowseFiles::Alloc(): Allocates a BrowseFiles instance.
• BrowseFiles::Free(): Destroys a BrowseFiles instance.

Use

Browse

• BrowseFiles::Init(): Initializes the class to browse a certain directory.
  • Parameter "flags":
    • BROWSEFILES_CALCSIZE: Specifies if BrowseFiles::GetSize() can be called later on. Only works for files, not for folders.
    • BROWSEFILES_SUPPRESSCACHING: Suppress caching.
• BrowseFiles::GetNext(): Gets the first or next file or subdirectory in the browsed directory.

Note

BrowseFiles::GetNext() needs to be called at least once, in order to get the first element and for the following "File Info" functions to work.

File Info

• BrowseFiles::GetFilename(): Gets the name of the current file or directory.
• BrowseFiles::GetSize(): Gets the size for the current file.
• BrowseFiles::GetFileTime(): Gets a time (LocalFileTime) for the current file or directory.
  • Parameter "mode", file time modes (GE_FILETIME):
    • GE_FILETIME_CREATED: File time created
    • GE_FILETIME_MODIFIED: File time modified
    • GE_FILETIME_ACCESS: File time accessed
• BrowseFiles::IsDir(): Checks if the current element is a directory.
• BrowseFiles::IsReadOnly(): Checks if the current file or directory is read-only.
• BrowseFiles::IsHidden(): Checks if the current file or directory is hidden.
• BrowseFiles::IsBundle(): Checks if the current file or directory is a bundle.

Further Reading

• BrowseVolumes Manual
• File Functions Manual
• Filename Manual
• LocalFileTime Manual