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Purpose:

Read from one line of a text file and go to the next line

 

General notation:

TfReadLn( FileIndex, value1 [ , value2 [ , value3 ... ] ] )

 

The separator has been defined by TfOpenForRead and will be assumed present between the values.

The command TfReadLn reads the current line and jumps to the next input line.

If there are no data left to be read, the numerical variables will be filled with 0 and the text variables with an empty string.

 

Example:

 TfOpenForRead( 1, 'output.txt' )

 TfRead( 1, Textvariable )

 text( Textvariable )

 TfReadLn( 1, Numericalvariable1, Numericalvariable2, Numericalvariable3 )

 //        At this point the reading process continues on the next input line

 text( Numericalvariable1, ',', Numericalvariable2, ',', Numericalvariable3 )

 TfRead( 1, Textvariable )

 text( Textvariable )

 TfRead( 1, Numericalvariable1, Numericalvariable2, Numericalvariable3 )

 text( Numericalvariable1, ',', Numericalvariable2, ',', Numericalvariable3 )

 TfClose(1)

 

Using the data:

'one';2;3;4;five;6;  1.23

'one';2;3;4;five;6;  1.23

 

Results in:

'one'

2,3,4

'one'

2,3,4

 

See also:

•TfOpenForRead

•TfRead

•TfReadLn

•TfEOF

•TfClose

 

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