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BinaryFile.ReadContainer

Read some data and interpret them as container.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
BinaryFile 7.3 Yes Yes Yes Yes Yes

MBS( "BinaryFile.ReadContainer"; BinaryFileRef; ByteCount; Filename )

Parameters

Parameter Description Example value
BinaryFileRef The reference number for the open file. $FH
ByteCount The number of Bytes to read. 1000
Filename File name to use for container value.
This is used to detect type of container.
"test.pdf"

Result

Returns value or error.

Description

Read some data and interpret them as container.
Depending on given file name, you get back a PDF, image, video or data container.
See also BinaryFile.WriteContainer for writing.

Examples

Read a JPEG:

Set Variable [ $fh ; Value: MBS( "BinaryFile.Open"; "/Users/cs/Desktop/test.jpg" ) ]
Set Variable [ $len ; Value: MBS("BinaryFile.Length"; $fh) ]
Set Variable [ $image ; Value: MBS( "BinaryFile.ReadContainer"; $fh; $len; "test.jpg" ) ]
Set Field [ test::ContainerField ; $image ]
Set Variable [ $r ; Value: MBS( "BinaryFile.Close"; $fh) ]

See also


BinaryFile.ReadByte   -   BinaryFile.ReadFloat

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