1/**************************************************************************** 2 * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29/**************************************************************************** 30 * Author: Thomas E. Dickey <dickey@clark.net> 1998 * 31 ****************************************************************************/ 32 33#include <curses.priv.h> 34 35#include <ctype.h> 36#include <tic.h> 37 38MODULE_ID("$Id: comp_expand.c,v 1.17 2001/09/22 19:16:52 tom Exp $") 39 40static int 41trailing_spaces(const char *src) 42{ 43 while (*src == ' ') 44 src++; 45 return *src == 0; 46} 47 48/* this deals with differences over whether 0x7f and 0x80..0x9f are controls */ 49#define REALCTL(s) (UChar(*(s)) < 127 && iscntrl(UChar(*(s)))) 50#define REALPRINT(s) (UChar(*(s)) < 127 && isprint(UChar(*(s)))) 51 52NCURSES_EXPORT(char *) 53_nc_tic_expand 54(const char *srcp, bool tic_format, int numbers) 55{ 56 static char *buffer; 57 static size_t length; 58 59 int bufp; 60 const char *str = VALID_STRING(srcp) ? srcp : ""; 61 bool islong = (strlen(str) > 3); 62 size_t need = (2 + strlen(str)) * 4; 63 int ch; 64 65 if (buffer == 0 || need > length) { 66 if ((buffer = typeRealloc(char, length = need, buffer)) == 0) 67 return 0; 68 } 69 70 bufp = 0; 71 while ((ch = UChar(*str)) != 0) { 72 if (ch == '%' && REALPRINT(str + 1)) { 73 buffer[bufp++] = *str++; 74 /* 75 * Though the character literals are more compact, most 76 * terminal descriptions use numbers and are not easy 77 * to read in character-literal form. 78 */ 79 switch (numbers) { 80 case -1: 81 if (str[0] == S_QUOTE 82 && str[1] != '\\' 83 && REALPRINT(str + 1) 84 && str[2] == S_QUOTE) { 85 sprintf(buffer + bufp, "{%d}", str[1]); 86 bufp += strlen(buffer + bufp); 87 str += 2; 88 } else { 89 buffer[bufp++] = *str; 90 } 91 break; 92 /* 93 * If we have a "%{number}", try to translate it into 94 * a "%'char'" form, since that will run a little faster 95 * when we're interpreting it. Also, having one form 96 * for the constant makes it simpler to compare terminal 97 * descriptions. 98 */ 99 case 1: 100 if (str[0] == L_BRACE 101 && isdigit(UChar(str[1]))) { 102 char *dst = 0; 103 long value = strtol(str + 1, &dst, 0); 104 if (dst != 0 105 && *dst == R_BRACE 106 && value < 127 107 && value != '\\' /* FIXME */ 108 && isprint((int) value)) { 109 ch = (int) value; 110 buffer[bufp++] = S_QUOTE; 111 if (ch == '\\' 112 || ch == S_QUOTE) 113 buffer[bufp++] = '\\'; 114 buffer[bufp++] = ch; 115 buffer[bufp++] = S_QUOTE; 116 str = dst; 117 } else { 118 buffer[bufp++] = *str; 119 } 120 } else { 121 buffer[bufp++] = *str; 122 } 123 break; 124 default: 125 buffer[bufp++] = *str; 126 break; 127 } 128 } else if (ch == 128) { 129 buffer[bufp++] = '\\'; 130 buffer[bufp++] = '0'; 131 } else if (ch == '\033') { 132 buffer[bufp++] = '\\'; 133 buffer[bufp++] = 'E'; 134 } else if (ch == '\\' && tic_format && (str == srcp || str[-1] != '^')) { 135 buffer[bufp++] = '\\'; 136 buffer[bufp++] = '\\'; 137 } else if (ch == ' ' && tic_format && (str == srcp || 138 trailing_spaces(str))) { 139 buffer[bufp++] = '\\'; 140 buffer[bufp++] = 's'; 141 } else if ((ch == ',' || ch == ':' || ch == '^') && tic_format) { 142 buffer[bufp++] = '\\'; 143 buffer[bufp++] = ch; 144 } else if (REALPRINT(str) 145 && (ch != ',' 146 && ch != ':' 147 && !(ch == '!' && !tic_format) 148 && ch != '^')) 149 buffer[bufp++] = ch; 150#if 0 /* FIXME: this would be more readable (in fact the whole 'islong' logic should be removed) */ 151 else if (ch == '\b') { 152 buffer[bufp++] = '\\'; 153 buffer[bufp++] = 'b'; 154 } else if (ch == '\f') { 155 buffer[bufp++] = '\\'; 156 buffer[bufp++] = 'f'; 157 } else if (ch == '\t' && islong) { 158 buffer[bufp++] = '\\'; 159 buffer[bufp++] = 't'; 160 } 161#endif 162 else if (ch == '\r' && (islong || (strlen(srcp) > 2 && str[1] == '\0'))) { 163 buffer[bufp++] = '\\'; 164 buffer[bufp++] = 'r'; 165 } else if (ch == '\n' && islong) { 166 buffer[bufp++] = '\\'; 167 buffer[bufp++] = 'n'; 168 } 169#define UnCtl(c) ((c) + '@') 170 else if (REALCTL(str) && ch != '\\' 171 && (!islong || isdigit(UChar(str[1])))) { 172 (void) sprintf(&buffer[bufp], "^%c", UnCtl(ch)); 173 bufp += 2; 174 } else { 175 (void) sprintf(&buffer[bufp], "\\%03o", ch); 176 bufp += 4; 177 } 178 179 str++; 180 } 181 182 buffer[bufp] = '\0'; 183 return (buffer); 184} 185