/* $OpenBSD: comp_expand.c,v 1.6 2007/06/02 01:29:11 pvalchev Exp $ */ /**************************************************************************** * Copyright (c) 1998,2000 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * ****************************************************************************/ /**************************************************************************** * Author: Thomas E. Dickey 1998 * ****************************************************************************/ #include #include #include MODULE_ID("$From: comp_expand.c,v 1.15 2000/12/10 01:30:10 tom Exp $") static int trailing_spaces(const char *src) { while (*src == ' ') src++; return *src == 0; } /* this deals with differences over whether 0x7f and 0x80..0x9f are controls */ #define CHAR_OF(s) (*(unsigned const char *)(s)) #define REALCTL(s) (CHAR_OF(s) < 127 && iscntrl(CHAR_OF(s))) #define REALPRINT(s) (CHAR_OF(s) < 127 && isprint(CHAR_OF(s))) NCURSES_EXPORT(char *) _nc_tic_expand (const char *srcp, bool tic_format, int numbers) { static char *buffer; static size_t length; int bufp; const char *str = VALID_STRING(srcp) ? srcp : ""; bool islong = (strlen(str) > 3); size_t need = (2 + strlen(str)) * 4; int ch; if (buffer == 0 || need > length) { if ((buffer = typeRealloc(char, length = need, buffer)) == 0) return 0; } bufp = 0; while ((ch = CharOf(*str)) != 0) { if (ch == '%' && REALPRINT(str + 1)) { buffer[bufp++] = *str++; /* * Though the character literals are more compact, most * terminal descriptions use numbers and are not easy * to read in character-literal form. */ switch (numbers) { case -1: if (str[0] == S_QUOTE && str[1] != '\\' && REALPRINT(str + 1) && str[2] == S_QUOTE) { snprintf(buffer + bufp, length - bufp, "{%d}", str[1]); bufp += strlen(buffer + bufp); str += 2; } else { buffer[bufp++] = *str; } break; /* * If we have a "%{number}", try to translate it into * a "%'char'" form, since that will run a little faster * when we're interpreting it. Also, having one form * for the constant makes it simpler to compare terminal * descriptions. */ case 1: if (str[0] == L_BRACE && isdigit(CharOf(str[1]))) { char *dst = 0; long value = strtol(str + 1, &dst, 0); if (dst != 0 && *dst == R_BRACE && value < 127 && value != '\\' /* FIXME */ && isprint((int) value)) { ch = (int) value; buffer[bufp++] = S_QUOTE; if (ch == '\\' || ch == S_QUOTE) buffer[bufp++] = '\\'; buffer[bufp++] = ch; buffer[bufp++] = S_QUOTE; str = dst; } else { buffer[bufp++] = *str; } } else { buffer[bufp++] = *str; } break; default: buffer[bufp++] = *str; break; } } else if (ch == 128) { buffer[bufp++] = '\\'; buffer[bufp++] = '0'; } else if (ch == '\033') { buffer[bufp++] = '\\'; buffer[bufp++] = 'E'; } else if (ch == '\\' && tic_format && (str == srcp || str[-1] != '^')) { buffer[bufp++] = '\\'; buffer[bufp++] = '\\'; } else if (ch == ' ' && tic_format && (str == srcp || trailing_spaces(str))) { buffer[bufp++] = '\\'; buffer[bufp++] = 's'; } else if ((ch == ',' || ch == ':' || ch == '^') && tic_format) { buffer[bufp++] = '\\'; buffer[bufp++] = ch; } else if (REALPRINT(str) && (ch != ',' && ch != ':' && !(ch == '!' && !tic_format) && ch != '^')) buffer[bufp++] = ch; #if 0 /* FIXME: this would be more readable (in fact the whole 'islong' logic should be removed) */ else if (ch == '\b') { buffer[bufp++] = '\\'; buffer[bufp++] = 'b'; } else if (ch == '\f') { buffer[bufp++] = '\\'; buffer[bufp++] = 'f'; } else if (ch == '\t' && islong) { buffer[bufp++] = '\\'; buffer[bufp++] = 't'; } #endif else if (ch == '\r' && (islong || (strlen(srcp) > 2 && str[1] == '\0'))) { buffer[bufp++] = '\\'; buffer[bufp++] = 'r'; } else if (ch == '\n' && islong) { buffer[bufp++] = '\\'; buffer[bufp++] = 'n'; } #define UnCtl(c) ((c) + '@') else if (REALCTL(str) && ch != '\\' && (!islong || isdigit(CharOf(str[1])))) { (void) snprintf(buffer + bufp, length - bufp, "^%c", UnCtl(ch)); bufp += strlen(buffer + bufp); } else { (void) snprintf(buffer + bufp, length - bufp, "\\%03o", ch); bufp += strlen(buffer + bufp); } str++; } buffer[bufp] = '\0'; return (buffer); }