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cdesc-ZStream.ri
U:RDoc::NormalClass[iI"ZStream:ETI"Zlib::ZStream;TI"Object;To:RDoc::Markup::Document:@parts[o;;[o:RDoc::Markup::Paragraph;[I"JZlib::ZStream is the abstract class for the stream which handles the ;TI"Dcompressed data. The operations are defined in the subclasses: ;TI"HZlib::Deflate for compression, and Zlib::Inflate for decompression.;To:RDoc::Markup::BlankLine o; ;[ I"PAn instance of Zlib::ZStream has one stream (struct zstream in the source) ;TI"Pand two variable-length buffers which associated to the input (next_in) of ;TI"Kthe stream and the output (next_out) of the stream. In this document, ;TI"N"input buffer" means the buffer for input, and "output buffer" means the ;TI"buffer for output.;T@o; ;[I"MData input into an instance of Zlib::ZStream are temporally stored into ;TI"Othe end of input buffer, and then data in input buffer are processed from ;TI"Ithe beginning of the buffer until no more output from the stream is ;TI"Oproduced (i.e. until avail_out > 0 after processing). During processing, ;TI"Noutput buffer is allocated and expanded automatically to hold all output ;TI" data.;T@o; ;[I"LSome particular instance methods consume the data in output buffer and ;TI"return them as a String.;T@o; ;[I"/Here is an ascii art for describing above:;T@o:RDoc::Markup::Verbatim;[I"F+================ an instance of Zlib::ZStream ================+ ;TI"F|| || ;TI"F|| +--------+ +-------+ +--------+ || ;TI"F|| +--| output |<---------|zstream|<---------| input |<--+ || ;TI"F|| | | buffer | next_out+-------+next_in | buffer | | || ;TI"F|| | +--------+ +--------+ | || ;TI"F|| | | || ;TI"F+===|======================================================|===+ ;TI"B | | ;TI"B v | ;TI"H"output data" "input data" ;T:@format0o; ;[I"PIf an error occurs during processing input buffer, an exception which is a ;TI"Msubclass of Zlib::Error is raised. At that time, both input and output ;TI"Dbuffer keep their conditions at the time when the error occurs.;T@S:RDoc::Markup::Heading: leveli: textI"Method Catalogue;T@o; ;[ I"OMany of the methods in this class are fairly low-level and unlikely to be ;TI"Jof interest to users. In fact, users are unlikely to use this class ;TI"Cdirectly; rather they will be interested in Zlib::Inflate and ;TI"Zlib::Deflate.;T@o; ;[I"/The higher level methods are listed below.;T@o:RDoc::Markup::List: @type:BULLET:@items[o:RDoc::Markup::ListItem:@label0;[o; ;[I"#total_in;To;;0;[o; ;[I"#total_out;To;;0;[o; ;[I"#data_type;To;;0;[o; ;[I"#adler;To;;0;[o; ;[I"#reset;To;;0;[o; ;[I"#finish;To;;0;[o; ;[I"#finished?;To;;0;[o; ;[I"#close;To;;0;[o; ;[I" #closed?;T: @fileI"ext/zlib/zlib.c;T:0@omit_headings_from_table_of_contents_below0;0;0[ [ [ [[I" class;T[[:public[ [:protected[ [:private[ [I" instance;T[[;[[I" adler;TI"ext/zlib/zlib.c;T[I" avail_in;T@†[I"avail_out;T@†[I"avail_out=;T@†[I" close;T@†[I"closed?;T@†[I"data_type;T@†[I"end;T@†[I"ended?;T@†[I"finish;T@†[I"finished?;T@†[I"flush_next_in;T@†[I"flush_next_out;T@†[I" reset;T@†[I"stream_end?;T@†[I" total_in;T@†[I"total_out;T@†[;[ [;[ [ [U:RDoc::Context::Section[i 0o;;[ ;0;0[@vI" Zlib;TcRDoc::NormalModule