If the VPack library is built with option -DBuildTools=ON (which is the default),
then the following executables will be compiled:
-
json-to-vpack: this tool can be used to convert a JSON input file into a VPack output file. The tool expects the JSON input file it should read from as its first argument, and the filename for its output as the second argument.Further options for json-to-vpack are:
--compact: if specified, allows storing VPack Array and Object values in the compact format, without indexes for sub values. This may generate smaller VPack values, but their internals can later be accessed without indexes only.--no-compact: the opposite of--compact.--compress: if specified, an additional pass over the input JSON is made to collect and count all object keys in a dictionary. That dictionary is then used when building the VPack result value. Using a dictionary for object keys may drastically reduce the VPack result size if object keys repeat and are long. Note that to decode the VPack value the dictionary will be needed!--no-compress: the opposite of--compress.--hex: will output a hex dump of the VPack result instead of the binary VPack value.
On Linux, json-to-vpack supports the pseudo filenames
-and+for stdin and stdout. -
vpack-to-json: this tool can be used to convert a VPack value in a file back into a JSON string. The tool expects the (binary) VPack input file it should read from in its first argument, and the filename for the JSON output file as its second argument.Further options for vpack-to-json are:
--pretty: generate pretty-printed JSON to improve readability--no-pretty: do not generate pretty-printed JSON
On Linux, vpack-to-json supports the pseudo filenames
-and+for stdin and stdout.