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/*---------------------------------------------------------------------------*\
____ _ _ __ _ __ ___ _ _
|_ / || | '_ \ '_ \/ -_) '_|
/__|\_, | .__/ .__/\___|_|
|__/|_| |_|
\*---------------------------------------------------------------------------*/
/** \file console.cc
* Miscellaneous console utilities.
*/
#include <stdlib.h>
#include <unistd.h>
#include <term.h>
namespace snapper
{
unsigned
get_screen_width_pure()
{
if (!isatty(STDOUT_FILENO))
return -1; // no clipping
int width = 0;
const char* cols_env = getenv("COLUMNS");
if (cols_env)
{
width = atoi(cols_env);
}
else
{
// use terminfo from ncurses
setupterm(NULL, STDOUT_FILENO, NULL);
width = tigetnum("cols");
/*
// use readline
rl_initialize();
rl_get_screen_size(NULL, &width);
*/
}
// safe default
if (width <= 0)
width = 80;
return width;
}
unsigned
get_screen_width()
{
static unsigned width = get_screen_width_pure();
return width;
}
}
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