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35 lines
626 B
C
35 lines
626 B
C
/* vi: set sw=4 ts=4: */
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/*
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* Utility routines.
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*
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* Copyright (C) 2007 Denys Vlasenko
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*
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* Licensed under GPL version 2, see file LICENSE in this tarball for details.
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*/
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#include "libbb.h"
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void fputc_printable(int ch, FILE *file)
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{
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if ((ch & (0x80 + PRINTABLE_META)) == (0x80 + PRINTABLE_META)) {
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fputs("M-", file);
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ch &= 0x7f;
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}
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ch = (unsigned char) ch;
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if (ch == 0x9b) {
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/* VT100's CSI, aka Meta-ESC, is not printable on vt-100 */
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ch = '{';
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goto print_caret;
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}
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if (ch < ' ') {
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ch += '@';
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goto print_caret;
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}
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if (ch == 0x7f) {
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ch = '?';
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print_caret:
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fputc('^', file);
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}
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fputc(ch, file);
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}
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