FileGetPos: Difference between revisions
Jump to navigation
Jump to search
(New page: number fileGetPos ( file ) Returns the current read/write position in the given file.) |
m (Portuguese version indexed) |
||
| (12 intermediate revisions by 8 users not shown) | |||
| Line 1: | Line 1: | ||
__NOTOC__ | |||
{{Server client function}} | |||
Returns the current read/write position in the given file. | Returns the current read/write position in the given file. | ||
==Syntax== | |||
<syntaxhighlight lang="lua"> int fileGetPos ( file theFile ) </syntaxhighlight> | |||
{{OOP||[[file]]:getPos|pos|fileSetPos}} | |||
===Required Arguments=== | |||
*'''theFile:''' the file handle you wish to get the position of. | |||
===Returns=== | |||
Returns the file position if successful, or ''false'' if an error occured (e.g. an invalid handle was passed). | |||
==Example== | |||
This example opens the file test.txt and outputs its contents and current read position to the console. | |||
<syntaxhighlight lang="lua">local hFile = fileOpen("test.txt", true) -- attempt to open the file (read only) | |||
if hFile then -- check if it was successfully opened | |||
local buffer | |||
while not fileIsEOF(hFile) do -- as long as we're not at the end of the file... | |||
buffer = fileRead(hFile, 500) -- ... read the next 500 bytes... | |||
outputConsole(buffer.."Current Position: "..fileGetPos(hFile)) -- ... and output them to the console and outputs the current read position | |||
end | |||
fileClose(hFile) -- close the file once we're done with it | |||
else | |||
outputConsole("Unable to open test.txt") | |||
end | |||
</syntaxhighlight> | |||
==See Also== | |||
{{File functions}} | |||
[[pt-br:fileGetPos]] | |||
Latest revision as of 18:51, 20 December 2023
Returns the current read/write position in the given file.
Syntax
int fileGetPos ( file theFile )
OOP Syntax Help! I don't understand this!
- Method: file:getPos(...)
- Variable: .pos
- Counterpart: fileSetPos
Required Arguments
- theFile: the file handle you wish to get the position of.
Returns
Returns the file position if successful, or false if an error occured (e.g. an invalid handle was passed).
Example
This example opens the file test.txt and outputs its contents and current read position to the console.
local hFile = fileOpen("test.txt", true) -- attempt to open the file (read only)
if hFile then -- check if it was successfully opened
local buffer
while not fileIsEOF(hFile) do -- as long as we're not at the end of the file...
buffer = fileRead(hFile, 500) -- ... read the next 500 bytes...
outputConsole(buffer.."Current Position: "..fileGetPos(hFile)) -- ... and output them to the console and outputs the current read position
end
fileClose(hFile) -- close the file once we're done with it
else
outputConsole("Unable to open test.txt")
end