[Libguestfs] [PATCH 0/2] RFC: add output selection for --machine-readable

Hi, this is a first approach (hence RFC, since it misses tests & documentation) in selecting the output for --machine-readable. The possible choices are: * --machine-readable: to stdout, like before * --machine-readable=file:name-of-file: to the specified file * --machine-readable=stream:stdout: explicitly to stdout * --machine-readable=stream:stderr: explicitly to stderr This makes it possible to add additional output for machine-readable in the tools, with the possibility for users to get it separately from the rest of the output/errors of the tool used. For example, the proposed --print-estimate for virt-v2v [1] could print human output (just like the --print-source), while printing e.g. JSON to the machine-readable stream. [1] https://www.redhat.com/archives/libguestfs/2018-August/msg00158.html Thanks, Pino Toscano (2): common/mltools: getopt: add Getopt.OptString OCaml tools: add output selection for --machine-readable builder/cmdline.ml | 12 ++++---- builder/repository_main.ml | 2 +- common/mltools/getopt-c.c | 20 ++++++++++++- common/mltools/getopt.ml | 5 +++- common/mltools/getopt.mli | 4 +++ common/mltools/getopt_tests.ml | 18 +++++++++++- common/mltools/test-getopt.sh | 11 +++++++ common/mltools/tools_utils.ml | 52 +++++++++++++++++++++++++++++++++- common/mltools/tools_utils.mli | 6 ++++ dib/cmdline.ml | 4 +-- get-kernel/get_kernel.ml | 2 +- resize/resize.ml | 22 +++++++------- sparsify/cmdline.ml | 16 +++++------ v2v/cmdline.ml | 28 +++++++++--------- 14 files changed, 155 insertions(+), 47 deletions(-) -- 2.17.1