libexplain  1.4.D001
libexplain/buffer/char_or_eof.c
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00001 /*
00002  * libexplain - Explain errno values returned by libc functions
00003  * Copyright (C) 2010, 2013 Peter Miller
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU Lesser General Public License as
00007  * published by the Free Software Foundation; either version 3 of the
00008  * License, or (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * Lesser General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU Lesser General Public License
00016  * along with this program. If not, see <http://www.gnu.org/licenses/>.
00017  */
00018 
00019 #include <libexplain/ac/ctype.h>
00020 #include <libexplain/ac/stdio.h>
00021 
00022 #include <libexplain/buffer/char.h>
00023 #include <libexplain/buffer/char_or_eof.h>
00024 #include <libexplain/buffer/int.h>
00025 
00026 
00027 void
00028 explain_buffer_char_or_eof(explain_string_buffer_t *sb, int value)
00029 {
00030     unsigned char   c;
00031 
00032     if (value == EOF)
00033     {
00034         explain_string_buffer_puts(sb, "EOF");
00035         return;
00036     }
00037     c = value;
00038     if (isprint(c) || isspace(c))
00039     {
00040         int             high_bits;
00041 
00042         explain_buffer_char(sb, c);
00043         high_bits = value - c;
00044         if (high_bits != 0)
00045             explain_string_buffer_printf(sb, " | 0x%04X", high_bits);
00046     }
00047     else
00048         explain_buffer_int(sb, value);
00049 }
00050 
00051 
00052 /* vim: set ts=8 sw=4 et : */