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authorJune McEnroe <june@causal.agency>2018-11-13 16:33:41 -0500
committerJune McEnroe <june@causal.agency>2018-11-13 16:33:41 -0500
commit646acfa91329ca5e8d3651801d734bf82f070e24 (patch)
tree579ab05503de613218ff085af3bd261681a7cc5c /gzoffset.3
parentAdd gztell(3) to gzseek.3 (diff)
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zlib-man-pages-646acfa91329ca5e8d3651801d734bf82f070e24.zip
Add gzoffset.3
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+.Dd November 13, 2018
+.Dt GZOFFSET 3
+.Os
+.
+.Sh NAME
+.Nm gzoffset
+.Nd offset in compressed file
+.
+.Sh LIBRARY
+.Lb libz
+.
+.Sh SYNOPSIS
+.In zlib.h
+.Ft z_off_t
+.Fn gzoffset "gzFile file"
+.
+.Sh DESCRIPTION
+Returns the current offset
+in the file being read or written.
+This offset includes
+the count of bytes
+that precede the gzip stream,
+for example when appending
+or when using
+.Xr gzdopen 3
+for reading.
+When reading,
+the offset does not include
+as yet unused buffered input.
+This information can be used
+for a progress indicator.
+.
+.Sh RETURN VALUES
+On error,
+.Fn gzoffset
+returns -1.