minix/external/bsd/kyua-cli/dist/utils/stream.cpp
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

83 lines
2.9 KiB
C++

// Copyright 2011 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
// OWNER 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
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "utils/stream.hpp"
#include <istream>
#include <sstream>
#include "utils/format/macros.hpp"
#include "utils/sanity.hpp"
/// Gets the length of a stream.
///
/// \param is The input stream for which to calculate its length.
///
/// \return The length of the stream. This is of size_t type instead of
/// directly std::streampos to simplify the caller. Some systems do not
/// support comparing a std::streampos directly to an integer (see
/// NetBSD 1.5.x), which is what we often want to do.
///
/// \throw std::exception If calculating the length fails due to a stream error.
std::size_t
utils::stream_length(std::istream& is)
{
const std::streampos current_pos = is.tellg();
try {
is.seekg(0, std::ios::end);
const std::streampos length = is.tellg();
is.seekg(current_pos, std::ios::beg);
return static_cast< std::size_t >(length);
} catch (...) {
is.seekg(current_pos, std::ios::beg);
throw;
}
}
/// Reads the whole contents of a stream into memory.
///
/// \param input The input stream from which to read.
///
/// \return A plain string containing the raw contents of the file.
std::string
utils::read_stream(std::istream& input)
{
std::ostringstream buffer;
char tmp[1024];
while (input.good()) {
input.read(tmp, sizeof(tmp));
if (input.good() || input.eof()) {
buffer.write(tmp, input.gcount());
}
}
return buffer.str();
}