print_stream: add a new print_line_color() method

This new interface allows printing a line with specified foreground and
background colors.  The implementation avoids printing escape sequences
if the output stream is not a TTY and note that escape sequences are
ignored on Windows.

This initial implementation relies on relatively modern 24-bit color
support which is present in many terminal emulators but may not always
display properly on older or simpler emulators. Windows coloring is
handled with SetConsoleTextAttribute, which offers a "1-bit" color
experience (but it's better than nothing)

This commit is a precursor to adding additional coloring to tshark.

Bug: 5158
Change-Id: Ib2b9d800095a065a4bb60abe0550862cda5539ec
Reviewed-on: https://code.wireshark.org/review/21324
Reviewed-by: Michael Mann <mmann78@netscape.net>

0 files changed, 0 insertions, 0 deletions