/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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 <cstring>
#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
