Jeb at 18:36, 7 February 2010

2010-02-07T18:36:06Z

← Older revision		Revision as of 18:36, 7 February 2010
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	{{File}}The ReadFile class will open a binary file for reading.		{{File}}The ReadFile class will open a binary file for reading.

-	=== Example ===	+	Call the ReadFile(source, mode) constructor to create a file for reading. The "source" parameter depends on the mode. If the mode is file on disk "f" or compressed file on disk "z", then the source is the file name. If the mode is in memory "m", then the source should be a WriteFile object.
		+
		+	=== Disk Example ===
	<pre>		<pre>

	local path = daisy.getUserFolderPath("")		local path = daisy.getUserFolderPath("")
-	local file = ReadFile(path .. filename)	+	local file = ReadFile(path .. filename, "f")

	if not file:isOk() then		if not file:isOk() then
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	file:close()		file:close()
		+
		+	</pre>
		+
		+	=== In Memory Example ===
		+	<pre>
		+
		+	gameData.savedState = WriteFile(nil, "m") -- create a memory file
		+
		+	-- write a bunch of stuff
		+	gameData.savedState:writeInt(value)
		+
		+	-- no need to close the file
		+
		+	-- restore state...
		+	local readState = ReadFile(gameData.savedState, "m")
		+
		+	-- read stuff
		+	value = readState:readInt()

	</pre>		</pre>

Jeb: Created page with '{{File}}The ReadFile class will open a binary file for reading. === Example ===

     local path = daisy.getUserFolderPath("")    local file = ReadFile(path .. filename)    ...'

2010-02-07T18:22:58Z

Created page with '{{File}}The ReadFile class will open a binary file for reading. === Example === <pre> local path = daisy.getUserFolderPath("") local file = ReadFile(path .. filename) ...'

New page

{{File}}The ReadFile class will open a binary file for reading.

=== Example ===
<pre>

local path = daisy.getUserFolderPath("")
local file = ReadFile(path .. filename)

if not file:isOk() then
print("Unable to open " .. filename)
return
end

local fileVersion = file:readInt()
playerName = file:readString()
-- ... and so on ...

file:close()

</pre>

ReadFile - Revision history

Jeb at 18:36, 7 February 2010

Jeb: Created page with '{{File}}The ReadFile class will open a binary file for reading. === Example ===
local path = daisy.getUserFolderPath("") local file = ReadFile(path .. filename) ...'