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| author | Karel Zak | 2012-11-22 14:26:41 +0100 |
|---|---|---|
| committer | Karel Zak | 2012-11-22 14:26:41 +0100 |
| commit | 4e76adb0e1aed7b8a094d26adcef793b51ce252b (patch) | |
| tree | 29730e24ef5102f911a755bee0750b91e40e6071 /lib/ttyutils.c | |
| parent | build-sys: use libcommon.a for lslocks (diff) | |
| download | kernel-qcow2-util-linux-4e76adb0e1aed7b8a094d26adcef793b51ce252b.tar.gz kernel-qcow2-util-linux-4e76adb0e1aed7b8a094d26adcef793b51ce252b.tar.xz kernel-qcow2-util-linux-4e76adb0e1aed7b8a094d26adcef793b51ce252b.zip | |
lib/ttyutils: create .c file
Well, now all tty stuff are incline functions in include/ttyutils.h.
It's seems more elegant to create regular lib/ttyutils.c for libcommon
and write test program.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'lib/ttyutils.c')
| -rw-r--r-- | lib/ttyutils.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/lib/ttyutils.c b/lib/ttyutils.c new file mode 100644 index 000000000..d37c168ae --- /dev/null +++ b/lib/ttyutils.c @@ -0,0 +1,39 @@ + +#include <ctype.h> + +#include "c.h" +#include "ttyutils.h" + +int get_terminal_width(void) +{ +#ifdef TIOCGSIZE + struct ttysize t_win; +#endif +#ifdef TIOCGWINSZ + struct winsize w_win; +#endif + const char *cp; + +#ifdef TIOCGSIZE + if (ioctl (0, TIOCGSIZE, &t_win) == 0) + return t_win.ts_cols; +#endif +#ifdef TIOCGWINSZ + if (ioctl (0, TIOCGWINSZ, &w_win) == 0) + return w_win.ws_col; +#endif + cp = getenv("COLUMNS"); + if (cp) { + char *end = NULL; + long c; + + errno = 0; + c = strtol(cp, &end, 10); + + if (errno == 0 && end && *end == '\0' && end > cp && + c > 0 && c <= INT_MAX) + return c; + } + return 0; +} + |