/*- * Copyright (c) 2013 David Chisnall * All rights reserved. * * This software was developed by SRI International and the University of * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) * ("CTSRD"), as part of the DARPA CRASH research programme. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ #include <string> #include <functional> #include <cstdio> #include <cstdlib> #include <ctype.h> #include <libgen.h> #include "util.hh" using std::string; namespace dtc { void push_string(byte_buffer &buffer, const string &s, bool escapes) { size_t length = s.size(); for (size_t i=0 ; i<length ; ++i) { uint8_t c = s[i]; if (escapes && c == '\\' && i+1 < length) { c = s[++i]; switch (c) { // For now, we just ignore invalid escape sequences. default: case '"': case '\'': case '\\': break; case 'a': c = '\a'; break; case 'b': c = '\b'; break; case 't': c = '\t'; break; case 'n': c = '\n'; break; case 'v': c = '\v'; break; case 'f': c = '\f'; break; case 'r': c = '\r'; break; case '0'...'7': { int v = digittoint(c); if (i+1 < length && s[i+1] <= '7' && s[i+1] >= '0') { v <<= 3; v |= digittoint(s[i+1]); i++; if (i+1 < length && s[i+1] <= '7' && s[i+1] >= '0') { v <<= 3; v |= digittoint(s[i+1]); } } c = (uint8_t)v; break; } case 'x': { ++i; if (i >= length) { break; } int v = digittoint(s[i]); if (i+1 < length && ishexdigit(s[i+1])) { v <<= 4; v |= digittoint(s[++i]); } c = (uint8_t)v; break; } } } buffer.push_back(c); } } namespace { string dirbasename(std::function<char*(char*)> fn, const string &s) { if (s == string()) { return string(); } std::unique_ptr<char, decltype(free)*> str = {strdup(s.c_str()), free}; string dn(fn(str.get())); return dn; } } string dirname(const string &s) { return dirbasename(::dirname, s); } string basename(const string &s) { return dirbasename(::basename, s); } } // namespace dtc