libexplain
1.4.D001
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00001 /* 00002 * libexplain - Explain errno values returned by libc functions 00003 * Copyright (C) 2008, 2009, 2013 Peter Miller 00004 * Written by Peter Miller <pmiller@opensource.org.au> 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU Lesser General Public License as 00008 * published by the Free Software Foundation; either version 3 of the 00009 * License, or (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public License 00017 * along with this program. If not, see <http://www.gnu.org/licenses/>. 00018 */ 00019 00020 #include <libexplain/ac/ctype.h> 00021 #include <libexplain/ac/string.h> 00022 00023 #include <libexplain/buffer/char.h> 00024 00025 00026 void 00027 explain_buffer_char(explain_string_buffer_t *sb, int c) 00028 { 00029 const char *p; 00030 00031 c = (unsigned char)c; 00032 if (c == '\'' || c == '\\') 00033 { 00034 explain_string_buffer_putc(sb, '\''); 00035 explain_string_buffer_putc(sb, '\\'); 00036 explain_string_buffer_putc(sb, c); 00037 explain_string_buffer_putc(sb, '\''); 00038 return; 00039 } 00040 if (isprint(c)) 00041 { 00042 explain_string_buffer_putc(sb, '\''); 00043 explain_string_buffer_putc(sb, c); 00044 explain_string_buffer_putc(sb, '\''); 00045 return; 00046 } 00047 p = strchr("\aa\bb\ff\nn\rr\tt\vv", c); 00048 if (p) 00049 { 00050 explain_string_buffer_putc(sb, '\''); 00051 explain_string_buffer_putc(sb, '\\'); 00052 explain_string_buffer_putc(sb, p[1]); 00053 explain_string_buffer_putc(sb, '\''); 00054 return; 00055 } 00056 explain_string_buffer_printf(sb, "0x%02X", c); 00057 } 00058 00059 00060 /* vim: set ts=8 sw=4 et : */