hush/libbb/printable.c
Denys Vlasenko 0ef64bdb40 *: make GNU licensing statement forms more regular
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 20:14:46 +02:00

35 lines
620 B
C

/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 2007 Denys Vlasenko
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
void FAST_FUNC fputc_printable(int ch, FILE *file)
{
if ((ch & (0x80 + PRINTABLE_META)) == (0x80 + PRINTABLE_META)) {
fputs("M-", file);
ch &= 0x7f;
}
ch = (unsigned char) ch;
if (ch == 0x9b) {
/* VT100's CSI, aka Meta-ESC, is not printable on vt-100 */
ch = '{';
goto print_caret;
}
if (ch < ' ') {
ch += '@';
goto print_caret;
}
if (ch == 0x7f) {
ch = '?';
print_caret:
fputc('^', file);
}
fputc(ch, file);
}