Difference between revisions of "X File"

From GiderosMobile
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'''Supported platforms:''' android, ios, mac, pc<br/>
 
'''Supported platforms:''' android, ios, mac, pc<br/>
 
'''Available since:''' Gideros 2011.6<br/>
 
'''Available since:''' Gideros 2011.6<br/>
=== Description ===
+
=== <translate>Description</translate> ===
 
<translate>file object is usually returned by [[Special:MyLanguage/io.open|io.open]] used to manipulate (read and write) files in lua</translate>
 
<translate>file object is usually returned by [[Special:MyLanguage/io.open|io.open]] used to manipulate (read and write) files in lua</translate>
=== Examples ===
+
=== <translate>Examples</translate> ===
 
'''Copy a file'''<br/>
 
'''Copy a file'''<br/>
 
<source lang="lua">local function copy(src, dst)
 
<source lang="lua">local function copy(src, dst)
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{|-
 
{|-
 
| style="width: 50%; vertical-align:top;"|
 
| style="width: 50%; vertical-align:top;"|
=== Methods ===
+
=== <translate>Methods</translate> ===
 
[[Special:MyLanguage/file:close|file:close]] ''<translate>closes file</translate>''<br/>
 
[[Special:MyLanguage/file:close|file:close]] ''<translate>closes file</translate>''<br/>
 
[[Special:MyLanguage/file:flush|file:flush]] ''<translate>saves any written data to file</translate>''<br/>
 
[[Special:MyLanguage/file:flush|file:flush]] ''<translate>saves any written data to file</translate>''<br/>
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[[Special:MyLanguage/file:write|file:write]] ''<translate>writes strings or numbers to file</translate>''<br/>
 
[[Special:MyLanguage/file:write|file:write]] ''<translate>writes strings or numbers to file</translate>''<br/>
 
| style="width: 50%; vertical-align:top;"|
 
| style="width: 50%; vertical-align:top;"|
=== Events ===
+
=== <translate>Events</translate> ===
=== Constants ===
+
=== <translate>Constants</translate> ===
 
|}
 
|}

Revision as of 08:28, 24 August 2018

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

Description

file object is usually returned by io.open used to manipulate (read and write) files in lua

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

file:close closes file
file:flush saves any written data to file
file:lines returns iterator function to return lines, nil ends
file:read reads file according to given formats, returns read values or nil
file:seek sets file pos, whence="set"|"cur"|"end", defaults "curr",0, returns file pos
file:write writes strings or numbers to file

Events

Constants