Action
Read a Line from an opened File.
Syntax
LINEINPUT #bFileNumber, sLineText
LINE_INPUT #bFileNumber, sLineText
Remarks
BfileNumber |
(Byte) File number, which identifies an opened file |
SlineText |
(String) A string, which is assigned with the next line from the file. |
Only valid for files opened in mode INPUT. Line INPUT works only with strings. It is great for working on text files.
See also
INITFILESYSTEM , OPEN , CLOSE, FLUSH , PRINT, LOC, LOF , EOF , FREEFILE , FILEATTR , SEEK , BSAVE , BLOAD , KILL , DISKFREE , DISKSIZE , GET , PUT , FILEDATE , FILETIME , FILEDATETIME , DIR , FILELEN , WRITE , INPUT
ASM
Calls |
_FileLineInput |
|
Input |
r24: filenumber |
X: Pointer to String to be written from file |
|
r25: Stringlength |
|
Output |
r25: Errorcode |
C-Flag: Set on Error |
Example
'Ok we want to check if the file contains the written lines
Ff = Freefile()' get file handle
Open "test.txt" For Input As #ff ' we can use a constant for the file too
Print Lof(#ff); " length of file"
Print Fileattr(#ff); " file mode" ' should be 1 for input
Do
LineInput #ff , S ' read a line
' line input is used to read a line of text from a file
Print S ' print on terminal emulator
Loop Until Eof(ff)<> 0
'The EOF() function returns a non-zero number when the end of the file is reached
'This way we know that there is no more data we can read
Close #ff