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author | June McEnroe <june@causal.agency> | 2020-12-27 22:11:35 -0500 |
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committer | June McEnroe <june@causal.agency> | 2020-12-27 22:11:35 -0500 |
commit | fe5829caffb9fb44a142f8ca9b0213304b0df84a (patch) | |
tree | 1dd744f2648ba894dff816afe48ab4157beafc80 /doc/zlib/deflateCopy.3 | |
parent | Add "this commit" option to switch form (diff) | |
parent | Replace Makefile with portable one (diff) | |
download | src-fe5829caffb9fb44a142f8ca9b0213304b0df84a.tar.gz src-fe5829caffb9fb44a142f8ca9b0213304b0df84a.zip |
Add 'doc/zlib/' from commit 'e1ebbcf0ed43f21dd504f1f109e5d12b6bc99460'
git-subtree-dir: doc/zlib git-subtree-mainline: bc52b7578b0ebfc228977342ac7bffc999212197 git-subtree-split: e1ebbcf0ed43f21dd504f1f109e5d12b6bc99460
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diff --git a/doc/zlib/deflateCopy.3 b/doc/zlib/deflateCopy.3 new file mode 100644 index 00000000..f20e0a9e --- /dev/null +++ b/doc/zlib/deflateCopy.3 @@ -0,0 +1,66 @@ +.Dd January 15, 2017 +.Dt DEFLATECOPY 3 +.Os +. +.Sh NAME +.Nm deflateCopy +.Nd copy deflate stream +. +.Sh LIBRARY +.Lb libz +. +.Sh SYNOPSIS +.In zlib.h +.Ft int +.Fn deflateCopy "z_streamp dest" "z_streamp source" +. +.Sh DESCRIPTION +Sets the destination stream +as a complete copy of the source stream. +. +.Pp +This function can be useful when +several compression strategies will be tried, +for example when there are several ways of +pre-processing the input data with a filter. +The streams that will be discarded +should then be freed by calling +.Xr deflateEnd 3 . +Note that +.Fn deflateCopy +duplicates the internal compression state +which can be quite large, +so this strategy is slow +and can consume lots of memory. +. +.Sh RETURN VALUES +.Fn deflateCopy +returns +.Dv Z_OK +if success, +.Dv Z_MEM_ERROR +if there was not enough memory, +.Dv Z_STREAM_ERROR +if the source stream state was inconsistent +.Po +such as +.Fa zalloc +being +.Dv Z_NULL +.Pc . +.Fa msg +is left unchanged +in both source and destination. +. +.Sh SEE ALSO +.Xr deflateInit 3 +. +.Sh HISTORY +This manual page was converted from +.In zlib.h +to mdoc format by +.An June McEnroe Aq Mt june@causal.agency . +. +.Sh AUTHORS +.An Jean-loup Gailly Aq Mt jloup@gzip.org +.An Mark Adler Aq Mt madler@alumni.caltech.edu |