xzopen.vi

Opens a gzip (.gz) file for reading or writing.

xzopen can be used to read a file which is not in gzip format; in this case xzread will directly read from the file without decompression.

xzopen returns a NULL fileHandle and 0 as Result if the file could not be opened or if there was insufficient memory to allocate the (de)compression state.


Connector Pane

xzopen.vi


Controls and Indicators

cstr

path

Full pathname of file to open/create.

cstr

mode

Combine following into one mode-string:

Readmode:

"r","r+","rb" or "r+b"

r=read

b=binary (also text with CR and/or LF)

+=allows writing too (setting extrafield)

Writemode:

"w","w+", "wb" or "w+b"

w=write

b=binary (also text with CR and/or LF)

+=allows reading too (to read header-fields)

Compressionlevel (in Writemode only):

"0" = no compression,

"1".."9" for higher but slower compression

Strategy (in Writemode only):

"f" for filtered data

"h" for Huffmann only compression

idlrn

fileHandle

ii32

Result