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On this page
  • Component Signature
  • Attributes
  • Examples
  • Script Syntax - Write
  • Script Syntax - Append
  • Script Syntax - Read
  • Script Syntax - Read Binary
  • Script Syntax - Rename
  • Script Syntax - Copy
  • Script Syntax - Move
  • Script Syntax - Delete
  • Tag Syntax (action=write)
  • Tag Syntax (action=append)
  • Tag Syntax (action=read)
  • Tag Syntax (action=readBinary)
  • Tag Syntax (action=rename)
  • Tag Syntax (action=copy)
  • Tag Syntax (action=move)
  • Tag Syntax (action=delete)
  • Tag Syntax (action=upload)
  • Tag Syntax (action=upload) with accept
  • Tag Syntax (action=uploadall)

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  1. BoxLang Language
  2. Reference
  3. Components
  4. io

File

Manages interactions with server files.

Component Signature

<bx:File action=[string]
file=[string]
mode=[string]
output=[string]
addnewline=[boolean]
attributes=[string]
charset=[string]
source=[string]
destination=[string]
variable=[string]
filefield=[string]
nameconflict=[string]
accept=[string]
result=[string]
fixnewline=[boolean]
cachedwithin=[numeric]
result=[string] />

Attributes

Atrribute
Type
Required
Description
Default

action

string

true

The action to take. One of: append, copy, delete, move, read, readbinary, rename, upload, uploadall, write

file

string

false

The file to act on

mode

string

false

The mode to open the file in

output

string

false

The output of the action

addnewline

boolean

false

Add a newline to the end of the file

false

attributes

string

false

Attributes to set on the file

charset

string

false

The character set to use

utf-8

source

string

false

The source file

destination

string

false

The destination file

variable

string

false

The variable to store the result in

filefield

string

false

The file field to use

nameconflict

string

false

What to do if there is a name conflict

error

accept

string

false

The accept header

result

string

false

The result of the action

fixnewline

boolean

false

Fix newlines

false

cachedwithin

numeric

false

The time to cache the file within

result

string

false

The result of the action

Examples

Script Syntax - Write

File Write

fileWrite( expandPath( "./myFile.txt" ), "Here's some content for my file." );

Script Syntax - Append

File Append - There is no fileAppend() so we access the file and use fileWriteLine()

myFile = fileOpen( expandPath( "./myFile.txt" ), "append" );
fileWriteLine( myFile, "Here's some new content." );
fileClose( myFile );

Script Syntax - Read

File Read

myFile = fileRead( expandPath( "./myFile.txt" ) );

Result: Here's some content for my file. Here's some new content.

Script Syntax - Read Binary

File Read Binary

myImageBinary = fileReadBinary( expandPath( "./myImage.jpg" ) );

Script Syntax - Rename

File Rename - Since there is no fileRename(), fileMove() works just as well

fileMove( expandPath( "./myFile.txt" ), expandPath( "./myNewFileName.txt" ) );

Script Syntax - Copy

File Copy

fileCopy( expandPath( "./myFile.txt" ), expandPath( "./some/other/path" ) );

Script Syntax - Move

File Move

fileMove( expandPath( "./myFile.txt" ), expandPath( "./some/other/path" ) );

Script Syntax - Delete

File Delete

fileDelete( expandPath( "./myFile.txt" ) );

Tag Syntax (action=write)

Write the contents of a variable to a file.

<bx:file action="write" file="#expandPath( "./myFile.txt" )#" output="Here's some content for my file.">

Tag Syntax (action=append)

Append content to the end of a file.

<bx:file action="append" file="#expandPath( "./myFile.txt" )#" attributes="normal" output="Here's some new content.">

Tag Syntax (action=read)

Read a file into a variable

<bx:file action="read" file="#expandPath( "./myFile.txt" )#" variable="myFile">

Tag Syntax (action=readBinary)

File Read Binary

<bx:file action="readBinary" file="#expandPath( "./myImage.jpg" )#" variable="myImageBinary">

Tag Syntax (action=rename)

Rename a file

<bx:file action="rename" source="#expandPath( "./myFile.txt" )#" destination="#expandPath( "./myNewFileName.txt" )#" attributes="normal">

Tag Syntax (action=copy)

Copy a file

<bx:file action="copy" source="#expandPath( "./myFile.txt" )#" destination="#expandPath( "./some/other/path" )#">

Tag Syntax (action=move)

Move a file

<bx:file action="move" source="#expandPath( "./myFile.txt" )#" destination="#expandPath( "./some/other/path" )#">

Tag Syntax (action=delete)

Delete a file

<bx:file action="delete" file="#expandPath( "./myFile.txt" )#">

Tag Syntax (action=upload)

Upload the file contained in the myFile field. Always upload to a directory outside of the webroot, validate the file extension, file content and then only if necessary copy it back to the web root.

<bx:file action="upload" destination="#getTempDirectory()#" filefield="form.myFile" nameconflict="makeunique">

Tag Syntax (action=upload) with accept

CF10+ Checks file extensions against a whitelist of allowed file extensions. You must set strict=false when specifying a file extension list.

<bx:file action="upload" accept=".png,.jpg" strict="false" destination="#getTempDirectory()#" filefield="form.myFile" nameconflict="makeunique">

Tag Syntax (action=uploadall)

Upload all files in the form scope.

<bx:file action="uploadall" destination="#getTempDirectory()#" nameconflict="makeunique">
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