Difference between revisions of "Io"

From GiderosMobile
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=== Methods ===
 
=== Methods ===
[[io.close]] - closes file, or the default output file<br/>
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[[io.close]] {{<translate>closes file, or the default output file</translate>}}<br/>
[[io.flush]] - flushes the default output file<br/>
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[[io.flush]] {{<translate>flushes the default output file</translate>}}<br/>
[[io.input]] - opens file in text mode, sets as default input file, or returns current default input file<br/>
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[[io.input]] {{<translate>opens file in text mode, sets as default input file, or returns current default input file</translate>}}<br/>
[[io.lines]] - open file in read mode, returns iterator function to return lines, nil ends<br/>
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[[io.lines]] {{<translate>open file in read mode, returns iterator function to return lines, nil ends</translate>}}<br/>
[[io.open]] - opens file in specified mode "[rawb ]", returns handle or nil<br/>
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[[io.open]] {{<translate>opens file in specified mode "[rawb ]", returns handle or nil</translate>}}<br/>
[[io.output]] - opens file in text mode, sets as default output file, or returns current default output file<br/>
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[[io.output]] {{<translate>opens file in text mode, sets as default output file, or returns current default output file</translate>}}<br/>
[[io.read]] - reads file according to given formats, returns read values or nil<br/>
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[[io.read]] {{<translate>reads file according to given formats, returns read values or nil</translate>}}<br/>
[[io.tmpfile]] - returns a handle for a temporary file, opened in update mode<br/>
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[[io.tmpfile]] {{<translate>returns a handle for a temporary file, opened in update mode</translate>}}<br/>
[[io.type]] - returns "file" if obj is an open file handle, "close file" if closed, or nil if not a file handle<br/>
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[[io.type]] {{<translate>returns "file" if obj is an open file handle, "close file" if closed, or nil if not a file handle</translate>}}<br/>
[[io.write]] - writes strings or numbers to file<br/>
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[[io.write]] {{<translate>writes strings or numbers to file</translate>}}<br/>
 
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=== Events ===
 
=== Events ===
 
=== Constants ===
 
=== Constants ===
 
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Revision as of 14:20, 23 August 2018

Supported platforms: android, ios, mac, pc
Available since: Gideros 2011.6

Description

Manages main input/output operations

Examples

Copy a file

local function copy(src, dst)
	local srcf = io.open(src, "rb")
	local dstf = io.open(dst, "wb")
	local size = 2^13      -- good buffer size (8K)
	while true do
		local block = srcf:read(size)
		if not block then break end
		dstf:write(block)
	end
	srcf:close()
	dstf:close()
end

Methods

io.close Template:Closes file, or the default output file
io.flush Template:Flushes the default output file
io.input Template:Opens file in text mode, sets as default input file, or returns current default input file
io.lines Template:Open file in read mode, returns iterator function to return lines, nil ends
io.open {{opens file in specified mode "[rawb ]", returns handle or nil}}
io.output Template:Opens file in text mode, sets as default output file, or returns current default output file
io.read Template:Reads file according to given formats, returns read values or nil
io.tmpfile Template:Returns a handle for a temporary file, opened in update mode
io.type Template:Returns "file" if obj is an open file handle, "close file" if closed, or nil if not a file handle
io.write Template:Writes strings or numbers to file

Events

Constants