Document Class

Description

.exists

.exists : boolean

Description

The .exists property returns true if the file exists on disk, and false otherwise.

This property is read-only.

.extension

.extension : string

Description

The .extension property returns the extension of the file name (if any). An extension always starts with ".". The property returns an empty string if the file name does not have an extension.

This property is read-only.

.fullName

.fullName : string

Description

The .fullName property returns the full name of the file, including its extension (if any).

This property is read-only.

.hidden

.hidden : boolean

Description

The .hidden property returns true if the file is set as "hidden" at the system level, and false otherwise.

This property is read/write.

.isAlias

.isAlias : boolean

Description

The .isAlias property returns true if the file is an alias, a shortcut, or a symbolic link, and false otherwise.

This property is read-only.

.isFile

.isFile : boolean

Description

The .isFile property returns always true for a file.

This property is read-only.

.isFolder

.isFolder : boolean

Description

The .isFolder property returns always false for a file.

This property is read-only.

.isWritable

.isWritable : boolean

Description

The .isWritable property returns true if the file exists on disk and is writable.

The property checks the ability of the application to write on the disk (access rights), it does not solely rely on the writable attribute of the file.

This property is read-only.

Example

 myFile = file("/RESOURCES/Archives/ReadMe.txt")
 if(myFile.isWritable)
    myNewFile = myFile.setText("Added text")
 end

.modificationDate

.modificationDate : date

Description

The .modificationDate property returns the date of the file's last modification.

This property is read-only.

.modificationTime

.modificationTime : time

Description

The .modificationTime property returns the time of the file's last modification (expressed as a number of seconds beginning at 00:00).

This property is read-only.

.name

.name : string

Description

The .name property returns the name of the file without extension (if any).

This property is read-only.

.original

.original : 4D.File
.original : 4D.Folder

Description

The .original property returns the target element for an alias, a shortcut, or a symbolic link file. The target element can be:

• a file object
• a folder object

For non-alias files, the property returns the same file object as the file.

This property is read-only.

.parent

.parent : 4D.Folder

Description

The .parent property returns the parent folder object of the file. If the path represents a system path (e.g., "/DATA/"), the system path is returned.

This property is read-only.

.path

.path : string

Description

The .path property returns the POSIX path of the file. If the path represents a filesystem (e.g., "/DATA/"), the filesystem is returned.

This property is read-only.

.size

.size : number

Description

The .size property returns the size of the file expressed in bytes. If the file does not exist on disk, the size is 0.

This property is read-only.

.copyTo()

.copyTo( destinationFolder : 4D.Folder { , newName : string } { , overwrite : integer } ) : 4D.File

Parameter	Type		Description
destinationFolder	4D.Folder	->	Destination folder
newName	string	->	Name for the copy
overwrite	integer	->	kOverwrite to replace existing elements
Result	4D.File	<-	Copied file

Description

The .copyTo() function copies the file object into the specified destinationFolder .

The destinationFolder must exist on disk, otherwise an error is generated.

By default, the file is copied with the name of the original file. If you want to rename the copy, pass the new name in the newName parameter. The new name must comply with naming rules (e.g., it must not contain characters such as ":", "/", etc.), otherwise an error is returned.

If a file with the same name already exists in the destinationFolder, by default 4D generates an error. You can pass the kOverwrite constant in the overwrite parameter to ignore and overwrite the existing file

Constant	Value	Comment
kOverwrite	4	Overwrite existing elements, if any

Returned value

The copied file object.

Example

You want to copy a picture file from the user's document folder to the application folder:

var source, copy : 4D.File
source = file("/RESOURCES/Pictures/photo.png")
copy = source.copyTo(folder("/PACKAGE"),kOverwrite)

.getContent()

.getContent() : 4D.Blob

Parameter	Type		Description
Result	4D.Blob	<-	File content

Description

The .getContent() function returns a 4D.Blob object containing the entire content of a file. For information on blobs, please refer to the blob section.

Returned value

A 4D.Blob object.

Example

To save a document's contents in a Blob attribute:

 var myFile : 4D.File
 var vEntity : cs.myClassEntity
 
 myFile = file("/RESOURCES/Archives/data.txt")
 vEntity = ds.myClass.all().first() //get an entity
 vEntity.infoBlob = myFile.getContent()
 vEntity.save()

.getText()

.getText( { charSetName : string { , breakMode : integer } } ) : string
.getText( { charSetNum : integer { , breakMode : integer } } ) : string

Parameter	Type		Description
charSetName	string	->	Name of character set
charSetNum	integer	->	Number of character set
breakMode	integer	->	Processing mode for line breaks
Result	string	<-	String from the document

Description

The .getText() function returns the contents of the file as text.

Optionally, you can designate the character set to be used for reading the contents. You can pass either:

• in charSetName, a string containing the standard set name (for example "ISO-8859-1" or "UTF-8"),
• or in charSetNum, the MIBEnum ID (number) of the standard set name.

For the list of character sets supported by Qodly, refer to the description of the convertFromText command.

If the document contains a Byte Order Mark (BOM), Qodly uses the character set that it has set instead of the one specified in charSetName or charSetNum (this parameter is then ignored). If the document does not contain a BOM and if charSetName or charSetNum is omitted, by default Qodly uses the "UTF-8" character set.

In breakMode, you can pass a number indicating the processing to apply to end-of-line characters in the document. The following constants of the "System Documents" theme are available:

Constant	Value	Comment
kDocumentUnchanged	0	No processing
kDocumentWithNativeFormat	1	(Default) Line breaks are converted to the native format of the operating system: CR (carriage return) under Unix, CRLF (carriage return + line feed) under Windows
kDocumentWithCRLF	2	Line breaks are converted to Windows format: CRLF (carriage return + line feed)
kDocumentWithCR	3	Line breaks are converted to OS X format: CR (carriage return)
kDocumentWithLF	4	Line breaks are converted to Unix format: LF (line feed)

By default, when you omit the breakMode parameter, line breaks are processed in native mode (1).

Returned value

Text of the file.

Example

Given the following text document (fields are separated by tabs):

id name price vat
3 thé 1.06€ 19.6
2 café 1.05€ 19.6

When you execute this code:

 var myFile : 4D.File
 var txt : string
 myFile = file("/RESOURCES/Billing.txt") //UTF-8 by default
 txt = myFile.getText()

... you get the following for txt:

"id\tname\tprice\tvat\r\n3\tthé\t1.06€\t19.6\r\n2\tcafé\t1.05€\t19.6"

with \t (tab) as separator and \r\n (CRLF) as line delimiter.

Here is another example with the same file, but a different line delimiter:

 txt = myFile.getText("UTF-8", kDocumentWithLF)

In this case, the contents of txt are as follows:

"id\tname\tprice\tvat\n3\tthé\t1.06€\t19.6\n2\tcafé\t1.05€\t19.6"

This time \n (LF) is used as line delimiter.