File System

These global variables provide information about file types, file handling, and file operations in the OSL environment.

File Type Definitions

The file_types object contains definitions for various file types recognized by the system. Each entry includes:

• Icon definition (for visual representation)

• Description of the file type

• Associated applications that can open the file type

Here's a summary of some key file types defined in the system:

File Extension	Description	Associated Applications
.folder	Directory/Folder	Files.osl
.osl	Origin Script	Process_Opener.osl, Studio.osl
.orsl	Origin Script	Process_Opener.osl, Studio.osl
.txt	Plain Text	Studio.osl
.md	Markdown	Studio.osl
.json	JSON File	Studio.osl
.xml	Markup	Studio.osl
.js	Javascript	Studio.osl
.html	HTML File	Studio.osl
.css	CSS File	Studio.osl
.py	Python	Studio.osl
.png, .jpg, .jpeg, .webp, .bmp	Image Files	Previewer.osl
.mp4, .webm	Video Files	Media_Player.osl
.mp3, .wav, .flac	Audio Files	Media_Player.osl

File Constants and Special Values

Variable	Type	Description
null	Null	Special value representing null or empty
newline	String	String representing a newline character
infinity	Number	Special value representing infinity

Examples

// Check if a file extension is recognized
def isRecognizedFileType(filename) (
  local extension = filename.split(".").last()
  return file_types[extension] != null
)

// Get the description of a file type
def getFileTypeDescription(filename) (
  local extension = filename.split(".").last()
  local fileType = file_types[extension]
  
  if fileType (
    return fileType[2]
    // Return the description (second element)
  ) else (
    return "Unknown file type"
  )
)

// Get applications that can open a file
def getCompatibleApps(filename) (
  local extension = filename.split(".").last()
  local fileType = file_types[extension]
  
  if fileType and fileType[3] (
    return fileType[3]
    // Return the array of applications
  ) else (
    return []
  )
)

// Example usage
filename = "document.txt"

if isRecognizedFileType(filename) (
  log "File type: " ++ getFileTypeDescription(filename)
  
  apps = getCompatibleApps(filename)
  if apps.len > 0 (
    log "Can be opened with: " ++ apps.join(", ")
  ) else (
    log "No compatible applications found"
  )
)

Notes

• The file types configuration is used by the system to determine how to display and handle different file types.

• New file types can be registered by applications by extending the file_types object.

• The icon definition uses a custom drawing syntax to define how the file type's icon should appear.

• Applications associated with file types are paths to OSL script files that can handle the specified file type.