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-rw-r--r--doc/zlib.n21
1 files changed, 18 insertions, 3 deletions
diff --git a/doc/zlib.n b/doc/zlib.n
index 256efec..d1f1eed 100644
--- a/doc/zlib.n
+++ b/doc/zlib.n
@@ -4,7 +4,7 @@
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
-'\" RCS: @(#) $Id: zlib.n,v 1.1 2008/12/11 16:50:51 dkf Exp $
+'\" RCS: @(#) $Id: zlib.n,v 1.2 2008/12/12 16:34:45 dkf Exp $
'\"
.so man.macros
.TH zlib n 8.6 Tcl "Tcl Built-In Commands"
@@ -24,12 +24,16 @@ Zlib library. It has the following subcommands
.TP
\fBzlib adler32\fI string\fR ?\fIinitValue\fR?
.
+Compute a checksum of binary string \fIstring\fR using the Adler-32 algorithm.
+If given, \fIinitValue\fR is used to initialize the checksum engine.
.TP
\fBzlib compress\fI string\fR ?\fIlevel\fR?
.
.TP
\fBzlib crc32\fI string\fR ?\fIinitValue\fR?
.
+Compute a checksum of binary string \fIstring\fR using the CRC-32 algorithm.
+If given, \fIinitValue\fR is used to initialize the checksum engine.
.TP
\fBzlib decompress\fI string\fR ?\fIbufferSize\fR?
.
@@ -37,11 +41,22 @@ Zlib library. It has the following subcommands
\fBzlib deflate\fI string\fR ?\fIlevel\fR?
.
.TP
-\fBzlib gunzip\fI string\fR ?\fIbufferSize\fR?
+\fBzlib gunzip\fI string\fR ?\fB\-headerVar \fIvarName\fR?
.
+Return the uncompressed contents of binary string \fIstring\fR, which must
+have been in gzip format. If \fB\-headerVar\fR is given, store a dictionary
+describing the contents of the gzip header in the variable called
+\fIvarName\fR.
+'\" TODO: describe dict fields
.TP
-\fBzlib gzip\fI string\fR ?\fIlevel\fR?
+\fBzlib gzip\fI string\fR ?\fB\-level \fIlevel\fR? ?\fB\-header \fIdict\fR?
.
+Return the compressed contents of binary string \fIstring\fR in gzip format.
+If \fB\-level\fR is given, \fIlevel\fR gives the compression level to use
+(from 0, which is uncompressed, to 9, maximally compressed). If \fB\-header\fR
+is given, \fIdict\fR is a dictionary containing values used for the gzip
+header.
+'\" TODO: describe dict fields
.TP
\fBzlib inflate\fI string\fR ?\fIbufferSize\fR?
.