| /* 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); |
| } |