Core Function FileSeek
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==== flag ==== | ==== flag ==== | ||
| − | The position to START from (Then you can add your offset) is set here with these flags: | + | Optional; The position to START from (Then you can add your offset) is set here with these flags: |
| − | * "b" = Base location is Beginning of the file | + | * "b" = Base location is Beginning of the file (Default) |
* "e" = Base location is End of the file | * "e" = Base location is End of the file | ||
* "c" = Base location is the current location | * "c" = Base location is the current location | ||
| Line 39: | Line 39: | ||
<syntaxhighlight lang="sputnik"> | <syntaxhighlight lang="sputnik"> | ||
$File = FileOpen("MyFile.txt", "w"); | $File = FileOpen("MyFile.txt", "w"); | ||
| − | If( | + | If(isVarObj($File, "file")) // You could just use isObj($File) however adding the "file" will make sure it is indeed a file |
{ | { | ||
FileAppend( $File, "This is line 1\n" ); | FileAppend( $File, "This is line 1\n" ); | ||
FileAppend( $File, "This is line 2\n" ); | FileAppend( $File, "This is line 2\n" ); | ||
FileAppend( $File, "This is line 3\n" ); | FileAppend( $File, "This is line 3\n" ); | ||
| − | FileSeek( $File, 0 | + | FileSeek( $File, 0 ); |
FileWrite( $File, "Replace Line 1" ); | FileWrite( $File, "Replace Line 1" ); | ||
FileClose( $File ); | FileClose( $File ); | ||
Latest revision as of 12:38, 14 June 2015
FileSeek( <file>, <offset>, <flag> )
Contents |
Description
Changes the current File Stream location on a previously opened text file.
Parameters
file
A variable containing the File handle.
offset
Any valid numeric expression above zero.
flag
Optional; The position to START from (Then you can add your offset) is set here with these flags:
- "b" = Base location is Beginning of the file (Default)
- "e" = Base location is End of the file
- "c" = Base location is the current location
Return Value
Success: Returns 1
Failure: Returns 0 if error occurs.
Remarks
N/A
Example
$File = FileOpen("MyFile.txt", "w"); If(isVarObj($File, "file")) // You could just use isObj($File) however adding the "file" will make sure it is indeed a file { FileAppend( $File, "This is line 1\n" ); FileAppend( $File, "This is line 2\n" ); FileAppend( $File, "This is line 3\n" ); FileSeek( $File, 0 ); FileWrite( $File, "Replace Line 1" ); FileClose( $File ); }
