/*=============================================================================
Boost.Wave: A Standard compliant C++ preprocessor library
http://www.boost.org/
Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
Software License, Version 1.0. (See accompanying file
LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#define BOOST_WAVE_SERIALIZATION 0 // enable serialization
#define BOOST_WAVE_BINARY_SERIALIZATION 0 // use binary archives
#define BOOST_WAVE_XML_SERIALIZATION 1 // use XML archives
#include "cpp.hpp" // global configuration
///////////////////////////////////////////////////////////////////////////////
// Include additional Boost libraries
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/convenience.hpp>
#include <boost/timer.hpp>
#include <boost/any.hpp>
///////////////////////////////////////////////////////////////////////////////
// Include Wave itself
#include <boost/wave.hpp>
///////////////////////////////////////////////////////////////////////////////
// Include the lexer related stuff
#include <boost/wave/cpplexer/cpp_lex_token.hpp> // token type
#include <boost/wave/cpplexer/cpp_lex_iterator.hpp> // lexer type
///////////////////////////////////////////////////////////////////////////////
// Include serialization support, if requested
#if BOOST_WAVE_SERIALIZATION != 0
#include <boost/serialization/serialization.hpp>
#if BOOST_WAVE_BINARY_SERIALIZATION != 0
#include <boost/archive/binary_iarchive.hpp>
#include <boost/archive/binary_oarchive.hpp>
typedef boost::archive::binary_iarchive iarchive;
typedef boost::archive::binary_oarchive oarchive;
#elif BOOST_WAVE_XML_SERIALIZATION != 0
#include <boost/archive/xml_iarchive.hpp>
#include <boost/archive/xml_oarchive.hpp>
typedef boost::archive::xml_iarchive iarchive;
typedef boost::archive::xml_oarchive oarchive;
#else
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
typedef boost::archive::text_iarchive iarchive;
typedef boost::archive::text_oarchive oarchive;
#endif
#endif
///////////////////////////////////////////////////////////////////////////////
// Include the context policies to use
#include "trace_macro_expansion.hpp"
///////////////////////////////////////////////////////////////////////////////
// Include lexer specifics, import lexer names
#if BOOST_WAVE_SEPARATE_LEXER_INSTANTIATION == 0
#include <boost/wave/cpplexer/re2clex/cpp_re2c_lexer.hpp>
#endif
///////////////////////////////////////////////////////////////////////////////
// Include the grammar definitions, if these shouldn't be compiled separately
// (ATTENTION: _very_ large compilation times!)
#if BOOST_WAVE_SEPARATE_GRAMMAR_INSTANTIATION == 0
#include <boost/wave/grammars/cpp_intlit_grammar.hpp>
#include <boost/wave/grammars/cpp_chlit_grammar.hpp>
#include <boost/wave/grammars/cpp_grammar.hpp>
#include <boost/wave/grammars/cpp_expression_grammar.hpp>
#include <boost/wave/grammars/cpp_predef_macros_grammar.hpp>
#include <boost/wave/grammars/cpp_defined_grammar.hpp>
#endif
///////////////////////////////////////////////////////////////////////////////
// Import required names
using namespace boost::spirit::classic;
using std::pair;
using std::vector;
using std::getline;
using std::ofstream;
using std::cout;
using std::cerr;
using std::endl;
using std::ostream;
using std::istreambuf_iterator;
///////////////////////////////////////////////////////////////////////////////
//
// This application uses the lex_iterator and lex_token types predefined
// with the Wave library, but it is possible to use your own types.
//
// You may want to have a look at the other samples to see how this is
// possible to achieve.
typedef boost::wave::cpplexer::lex_token<> token_type;
typedef boost::wave::cpplexer::lex_iterator<token_type>
lex_iterator_type;
// The C++ preprocessor iterators shouldn't be constructed directly. They
// are to be generated through a boost::wave::context<> object. This
// boost::wave::context object is additionally to be used to initialize and
// define different parameters of the actual preprocessing.
typedef boost::wave::context<
std::string::iterator, lex_iterator_type,
boost::wave::iteration_context_policies::load_file_to_string,
trace_macro_expansion<token_type> >
context_type;
///////////////////////////////////////////////////////////////////////////////
// print the current version
std::string get_version()
{
std::string version (context_type::get_version_string());
version = version.substr(1, version.size()-2); // strip quotes
version += std::string(" (" CPP_VERSION_DATE_STR ")"); // add date
return version;
}
///////////////////////////////////////////////////////////////////////////////
// print the current version for interactive sessions
int print_interactive_version()
{
cout << "Wave: A Standard conformant C++ preprocessor based on the Boost.Wave library" << endl;
cout << "Version: " << get_version() << endl;
return 0;
}
///////////////////////////////////////////////////////////////////////////////
// print the copyright statement
int print_copyright()
{
char const *copyright[] = {
"",
"Wave: A Standard conformant C++ preprocessor based on the Boost.Wave library",
"http://www.boost.org/",
"",
"Copyright (c) 2001-2012 Hartmut Kaiser, Distributed under the Boost",
"Software License, Version 1.0. (See accompanying file",
"LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)",
0
};
for (int i = 0; 0 != copyright[i]; ++i)
cout << copyright[i] << endl;
return 0; // exit app
}
///////////////////////////////////////////////////////////////////////////////
// forward declarations only
namespace cmd_line_utils
{
class include_paths;
}
namespace boost { namespace program_options {
void validate(boost::any &v, std::vector<std::string> const &s,
cmd_line_utils::include_paths *, long);
}} // boost::program_options
///////////////////////////////////////////////////////////////////////////////
#include <boost/program_options.hpp>
namespace po = boost::program_options;
namespace fs = boost::filesystem;
///////////////////////////////////////////////////////////////////////////////
namespace cmd_line_utils {
// Additional command line parser which interprets '@something' as an
// option "config-file" with the value "something".
inline pair<std::string, std::string>
at_option_parser(std::string const&s)
{
if ('@' == s[0])
return std::make_pair(std::string("config-file"), s.substr(1));
else
return pair<std::string, std::string>();
}
// class, which keeps include file information read from the command line
class include_paths {
public:
include_paths() : seen_separator(false) {}
vector<std::string> paths; // stores user paths
vector<std::string> syspaths; // stores system paths
bool seen_separator; // command line contains a '-I-' option
// Function which validates additional tokens from command line.
static void
validate(boost::any &v, vector<std::string> const &tokens)
{
if (v.empty())
v = boost::any(include_paths());
include_paths *p = boost::any_cast<include_paths>(&v);
BOOST_ASSERT(p);
// Assume only one path per '-I' occurrence.
std::string const& t = po::validators::get_single_string(tokens);
if (t == "-") {
// found -I- option, so switch behaviour
p->seen_separator = true;
}
else if (p->seen_separator) {
// store this path as a system path
p->syspaths.push_back(t);
}
else {
// store this path as an user path
p->paths.push_back(t);
}
}
};
// Read all options from a given config file, parse and add them to the
// given variables_map
bool read_config_file_options(std::string const &filename,
po::options_description const &desc, po::variables_map &vm,
bool may_fail = false)
{
std::ifstream ifs(filename.c_str());
if (!ifs.is_open()) {
if (!may_fail) {
cerr << filename
<< ": command line warning: config file not found"
<< endl;
}
return false;
}
vector<std::string> options;
std::string line;
while (std::getline(ifs, line)) {
// skip empty lines
std::string::size_type pos = line.find_first_not_of(" \t");
if (pos == std::string::npos)
continue;
// skip comment lines
if ('#' != line[pos]) {
// strip leading and trailing whitespace
std::string::size_type endpos = line.find_last_not_of(" \t");
BOOST_ASSERT(endpos != std::string::npos);
options.push_back(line.substr(pos, endpos-pos+1));
}
}
if (options.size() > 0) {
using namespace boost::program_options::command_line_style;
po::store(po::command_line_parser(options)
.options(desc).style(unix_style).run(), vm);
po::notify(vm);
}
return true;
}
// predicate to extract all positional arguments from the command line
struct is_argument {
bool operator()(po::option const &opt)
{
return (opt.position_key == -1) ? true : false;
}
};
// trim quotes from path names, if any
std::string trim_quotes(std::string const& file)
{
if (('"' == file[0] || '\'' == file[0]) && file[0] == file[file.size()-1])
{
return file.substr(1, file.size()-2);
}
return file;
}
///////////////////////////////////////////////////////////////////////////////
}
///////////////////////////////////////////////////////////////////////////////
//
// Special validator overload, which allows to handle the -I- syntax for
// switching the semantics of an -I option.
//
///////////////////////////////////////////////////////////////////////////////
namespace boost { namespace program_options {
void validate(boost::any &v, std::vector<std::string> const &s,
cmd_line_utils::include_paths *, long)
{
cmd_line_utils::include_paths::validate(v, s);
}
}} // namespace boost::program_options
///////////////////////////////////////////////////////////////////////////////
namespace {
class auto_stop_watch : public stop_watch
{
public:
auto_stop_watch(std::ostream &outstrm_)
: print_time(false), outstrm(outstrm_)
{
}
~auto_stop_watch()
{
if (print_time) {
outstrm << "Elapsed time: "
<< this->format_elapsed_time()
<< std::endl;
}
}
void set_print_time(bool print_time_)
{
print_time = print_time_;
}
private:
bool print_time;
std::ostream &outstrm;
};
///////////////////////////////////////////////////////////////////////////
inline std::string
report_iostate_error(std::ios::iostate state)
{
BOOST_ASSERT(state & (std::ios::badbit | std::ios::failbit | std::ios::eofbit));
std::string result;
if (state & std::ios::badbit) {
result += " the reported problem was: "
"loss of integrity of the stream buffer\n";
}
if (state & std::ios::failbit) {
result += " the reported problem was: "
"an operation was not processed correctly\n";
}
if (state & std::ios::eofbit) {
result += " the reported problem was: "
"end-of-file while writing to the stream\n";
}
return result;
}
///////////////////////////////////////////////////////////////////////////
// Retrieve the position of a macro definition
template <typename Context>
inline bool
get_macro_position(Context &ctx,
typename Context::token_type::string_type const& name,
typename Context::position_type &pos)
{
bool has_parameters = false;
bool is_predefined = false;
std::vector<typename Context::token_type> parameters;
typename Context::token_sequence_type definition;
return ctx.get_macro_definition(name, has_parameters, is_predefined,
pos, parameters, definition);
}
///////////////////////////////////////////////////////////////////////////
// Generate some meaningful error messages
template <typename Exception>
inline int
report_error_message(Exception const &e)
{
// default error reporting
cerr
<< e.file_name() << ":" << e.line_no() << ":" << e.column_no()
<< ": " << e.description() << endl;
// errors count as one
return (e.get_severity() == boost::wave::util::severity_error ||
e.get_severity() == boost::wave::util::severity_fatal) ? 1 : 0;
}
template <typename Context>
inline int
report_error_message(Context &ctx, boost::wave::cpp_exception const &e)
{
// default error reporting
int result = report_error_message(e);
using boost::wave::preprocess_exception;
switch(e.get_errorcode()) {
case preprocess_exception::macro_redefinition:
{
// report the point of the initial macro definition
typename Context::position_type pos;
if (get_macro_position(ctx, e.get_related_name(), pos)) {
cerr
<< pos << ": "
<< preprocess_exception::severity_text(e.get_severity())
<< ": this is the location of the previous definition."
<< endl;
}
else {
cerr
<< e.file_name() << ":" << e.line_no() << ":"
<< e.column_no() << ": "
<< preprocess_exception::severity_text(e.get_severity())
<< ": not able to retrieve the location of the previous "
<< "definition." << endl;
}
}
break;
default:
break;
}
return result;
}
///////////////////////////////////////////////////////////////////////////
// Read one logical line of text
inline bool
read_a_line (std::istream &instream, std::string &instring)
{
bool eol = true;
do {
std::string line;
std::getline(instream, line);
if (instream.rdstate() & std::ios::failbit)
return false; // nothing to do
eol = true;
if (line.find_last_of('\\') == line.size()-1)
eol = false;
instring += line + '\n';
} while (!eol);
return true;
}
///////////////////////////////////////////////////////////////////////////
// Load and save the internal tables of the wave::context object
template <typename Context>
inline void
load_state(po::variables_map const &vm, Context &ctx)
{
#if BOOST_WAVE_SERIALIZATION != 0
try {
if (vm.count("state") > 0) {
fs::path state_file (
boost::wave::util::create_path(vm["state"].as<std::string>()));
if (state_file == "-")
state_file = boost::wave::util::create_path("wave.state");
std::ios::openmode mode = std::ios::in;
#if BOOST_WAVE_BINARY_SERIALIZATION != 0
mode = (std::ios::openmode)(mode | std::ios::binary);
#endif
std::ifstream ifs (state_file.string().c_str(), mode);
if (ifs.is_open()) {
using namespace boost::serialization;
iarchive ia(ifs);
std::string version;
ia >> make_nvp("version", version); // load version
if (version == CPP_VERSION_FULL_STR)
ia >> make_nvp("state", ctx); // load the internal tables from disc
else {
cerr << "wave: detected version mismatch while loading state, state was not loaded." << endl;
cerr << " loaded version: " << version << endl;
cerr << " expected version: " << CPP_VERSION_FULL_STR << endl;
}
}
}
}
catch (boost::archive::archive_exception const& e) {
cerr << "wave: error while loading state: "
<< e.what() << endl;
}
catch (boost::wave::preprocess_exception const& e) {
cerr << "wave: error while loading state: "
<< e.description() << endl;
}
#endif
}
template <typename Context>
inline void
save_state(po::variables_map const &vm, Context const &ctx)
{
#if BOOST_WAVE_SERIALIZATION != 0
try {
if (vm.count("state") > 0) {
fs::path state_file (boost::wave::util::create_path(
vm["state"].as<std::string>()));
if (state_file == "-")
state_file = boost::wave::util::create_path("wave.state");
std::ios::openmode mode = std::ios::out;
#if BOOST_WAVE_BINARY_SERIALIZATION != 0
mode = (std::ios::openmode)(mode | std::ios::binary);
#endif
ofstream ofs(state_file.string().c_str(), mode);
if (!ofs.is_open()) {
cerr << "wave: could not open state file for writing: "
<< state_file.string() << endl;
// this is non-fatal
}
else {
using namespace boost::serialization;
oarchive oa(ofs);
std::string version(CPP_VERSION_FULL_STR);
oa << make_nvp("version", version); // write version
oa << make_nvp("state", ctx); // write the internal tables to disc
}
}
}
catch (boost::archive::archive_exception const& e) {
cerr << "wave: error while writing state: "
<< e.what() << endl;
}
#endif
}
///////////////////////////////////////////////////////////////////////////
// list all defined macros
bool list_macro_names(context_type const& ctx, std::string filename)
{
// open file for macro names listing
std::ofstream macronames_out;
fs::path macronames_file (boost::wave::util::create_path(filename));
if (macronames_file != "-") {
macronames_file = boost::wave::util::complete_path(macronames_file);
boost::wave::util::create_directories(
boost::wave::util::branch_path(macronames_file));
macronames_out.open(macronames_file.string().c_str());
if (!macronames_out.is_open()) {
cerr << "wave: could not open file for macro name listing: "
<< macronames_file.string() << endl;
return false;
}
}
else {
macronames_out.copyfmt(cout);
macronames_out.clear(cout.rdstate());
static_cast<std::basic_ios<char> &>(macronames_out).rdbuf(cout.rdbuf());
}
// simply list all defined macros and its definitions
typedef context_type::const_name_iterator name_iterator;
name_iterator end = ctx.macro_names_end();
for (name_iterator it = ctx.macro_names_begin(); it != end; ++it)
{
typedef std::vector<context_type::token_type> parameters_type;
bool has_pars = false;
bool predef = false;
context_type::position_type pos;
parameters_type pars;
context_type::token_sequence_type def;
if (ctx.get_macro_definition(*it, has_pars, predef, pos, pars, def))
{
macronames_out << (predef ? "-P" : "-D") << *it;
if (has_pars) {
// list the parameter names for function style macros
macronames_out << "(";
parameters_type::const_iterator pend = pars.end();
for (parameters_type::const_iterator pit = pars.begin();
pit != pend; /**/)
{
macronames_out << (*pit).get_value();
if (++pit != pend)
macronames_out << ", ";
}
macronames_out << ")";
}
macronames_out << "=";
// print the macro definition
context_type::token_sequence_type::const_iterator dend = def.end();
for (context_type::token_sequence_type::const_iterator dit = def.begin();
dit != dend; ++dit)
{
macronames_out << (*dit).get_value();
}
macronames_out << std::endl;
}
}
return true;
}
///////////////////////////////////////////////////////////////////////////
// list macro invocation counts
bool list_macro_counts(context_type const& ctx, std::string filename)
{
// open file for macro invocation count listing
std::ofstream macrocounts_out;
fs::path macrocounts_file (boost::wave::util::create_path(filename));
if (macrocounts_file != "-") {
macrocounts_file = boost::wave::util::complete_path(macrocounts_file);
boost::wave::util::create_directories(
boost::wave::util::branch_path(macrocounts_file));
macrocounts_out.open(macrocounts_file.string().c_str());
if (!macrocounts_out.is_open()) {
cerr << "wave: could not open file for macro invocation count listing: "
<< macrocounts_file.string() << endl;
return false;
}
}
else {
macrocounts_out.copyfmt(cout);
macrocounts_out.clear(cout.rdstate());
static_cast<std::basic_ios<char> &>(macrocounts_out).rdbuf(cout.rdbuf());
}
// list all expanded macro names and their counts in alphabetical order
std::map<std::string, std::size_t> const& counts =
ctx.get_hooks().get_macro_counts();
typedef std::map<std::string, std::size_t>::const_iterator iterator;
iterator end = counts.end();
for (iterator it = counts.begin(); it != end; ++it)
macrocounts_out << (*it).first << "," << (*it).second << std::endl;
return true;
}
///////////////////////////////////////////////////////////////////////////
// read all of a file into a string
std::string read_entire_file(std::istream& instream)
{
std::string content;
instream.unsetf(std::ios::skipws);
#if defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)
// this is known to be very slow for large files on some systems
copy (std::istream_iterator<char>(instream),
std::istream_iterator<char>(),
std::inserter(content, content.end()));
#else
content = std::string(std::istreambuf_iterator<char>(instream.rdbuf()),
std::istreambuf_iterator<char>());
#endif
return content;
}
} // anonymous namespace
///////////////////////////////////////////////////////////////////////////////
// do the actual preprocessing
int
do_actual_work (std::string file_name, std::istream &instream,
po::variables_map const &vm, bool input_is_stdin)
{
// current file position is saved for exception handling
boost::wave::util::file_position_type current_position;
auto_stop_watch elapsed_time(cerr);
int error_count = 0;
try {
// process the given file
std::string instring;
instream.unsetf(std::ios::skipws);
if (!input_is_stdin)
instring = read_entire_file(instream);
// The preprocessing of the input stream is done on the fly behind the
// scenes during iteration over the context_type::iterator_type stream.
std::ofstream output;
std::ofstream traceout;
std::ofstream includelistout;
std::ofstream listguardsout;
trace_flags enable_trace = trace_nothing;
if (vm.count("traceto")) {
// try to open the file, where to put the trace output
fs::path trace_file (boost::wave::util::create_path(
vm["traceto"].as<std::string>()));
if (trace_file != "-") {
boost::wave::util::create_directories(
boost::wave::util::branch_path(trace_file));
traceout.open(trace_file.string().c_str());
if (!traceout.is_open()) {
cerr << "wave: could not open trace file: " << trace_file
<< endl;
return -1;
}
}
enable_trace = trace_macros;
}
if ((enable_trace & trace_macros) && !traceout.is_open()) {
// by default trace to std::cerr
traceout.copyfmt(cerr);
traceout.clear(cerr.rdstate());
static_cast<std::basic_ios<char> &>(traceout).rdbuf(cerr.rdbuf());
}
// Open the stream where to output the list of included file names
if (vm.count("listincludes")) {
// try to open the file, where to put the include list
fs::path includes_file(boost::wave::util::create_path(
vm["listincludes"].as<std::string>()));
if (includes_file != "-") {
boost::wave::util::create_directories(
boost::wave::util::branch_path(includes_file));
includelistout.open(includes_file.string().c_str());
if (!includelistout.is_open()) {
cerr << "wave: could not open include list file: "
<< includes_file.string() << endl;
return -1;
}
}
enable_trace = trace_flags(enable_trace | trace_includes);
}
if ((enable_trace & trace_includes) && !includelistout.is_open()) {
// by default list included names to std::cout
includelistout.copyfmt(cout);
includelistout.clear(cout.rdstate());
static_cast<std::basic_ios<char> &>(includelistout).
rdbuf(cout.rdbuf());
}
// Open the stream where to output the list of included file names
if (vm.count("listguards")) {
// try to open the file, where to put the include list
fs::path listguards_file(boost::wave::util::create_path(
vm["listguards"].as<std::string>()));
if (listguards_file != "-") {
boost::wave::util::create_directories(
boost::wave::util::branch_path(listguards_file));
listguardsout.open(listguards_file.string().c_str());
if (!listguardsout.is_open()) {
cerr << "wave: could not open include guard list file: "
<< listguards_file.string() << endl;
return -1;
}
}
enable_trace = trace_flags(enable_trace | trace_guards);
}
if ((enable_trace & trace_guards) && !listguardsout.is_open()) {
// by default list included names to std::cout
listguardsout.copyfmt(cout);
listguardsout.clear(cout.rdstate());
static_cast<std::basic_ios<char> &>(listguardsout).
rdbuf(cout.rdbuf());
}
// enable preserving comments mode
bool preserve_comments = false;
bool preserve_whitespace = false;
bool preserve_bol_whitespace = false;
if (vm.count("preserve")) {
int preserve = vm["preserve"].as<int>();
switch(preserve) {
case 0: break; // preserve no whitespace
case 3: // preserve all whitespace
preserve_whitespace = true;
preserve_comments = true;
preserve_bol_whitespace = true;
break;
case 2: // preserve comments and BOL whitespace only
preserve_comments = true;
preserve_bol_whitespace = true;
break;
case 1: // preserve BOL whitespace only
preserve_bol_whitespace = true;
break;
default:
cerr << "wave: bogus preserve whitespace option value: "
<< preserve << ", should be 0, 1, 2, or 3" << endl;
return -1;
}
}
// Since the #pragma wave system() directive may cause a potential security
// threat, it has to be enabled explicitly by --extended or -x
bool enable_system_command = false;
if (vm.count("extended"))
enable_system_command = true;
// This this the central piece of the Wave library, it provides you with
// the iterators to get the preprocessed tokens and allows to configure
// the preprocessing stage in advance.
bool allow_output = true; // will be manipulated from inside the hooks object
std::string default_outfile; // will be used from inside the hooks object
trace_macro_expansion<token_type> hooks(preserve_whitespace,
preserve_bol_whitespace, output, traceout, includelistout,
listguardsout, enable_trace, enable_system_command, allow_output,
default_outfile);
// enable macro invocation count, if appropriate
if (vm.count("macrocounts"))
hooks.enable_macro_counting();
// check, if we have a license file to prepend
std::string license;
if (vm.count ("license")) {
// try to open the file, where to put the preprocessed output
std::string license_file(vm["license"].as<std::string>());
std::ifstream license_stream(license_file.c_str());
if (!license_stream.is_open()) {
cerr << "wave: could not open specified license file: "
<< license_file << endl;
return -1;
}
license = read_entire_file(license_stream);
hooks.set_license_info(license);
}
context_type ctx (instring.begin(), instring.end(), file_name.c_str(), hooks);
#if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
// enable C99 mode, if appropriate (implies variadics)
if (vm.count("c99")) {
#if BOOST_WAVE_SUPPORT_CPP0X != 0
if (vm.count("c++11")) {
cerr << "wave: multiple language options specified: --c99 "
"and --c++11" << endl;
return -1;
}
#endif
ctx.set_language(
boost::wave::language_support(
boost::wave::support_c99
| boost::wave::support_option_convert_trigraphs
| boost::wave::support_option_emit_line_directives
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
| boost::wave::support_option_include_guard_detection
#endif
#if BOOST_WAVE_EMIT_PRAGMA_DIRECTIVES != 0
| boost::wave::support_option_emit_pragma_directives
#endif
| boost::wave::support_option_insert_whitespace
));
}
else if (vm.count("variadics")) {
// enable variadics and placemarkers, if appropriate
ctx.set_language(boost::wave::enable_variadics(ctx.get_language()));
}
#endif // BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
#if BOOST_WAVE_SUPPORT_CPP0X != 0
if (vm.count("c++11")) {
if (vm.count("c99")) {
cerr << "wave: multiple language options specified: --c99 "
"and --c++11" << endl;
return -1;
}
ctx.set_language(
boost::wave::language_support(
boost::wave::support_cpp0x
| boost::wave::support_option_convert_trigraphs
| boost::wave::support_option_long_long
| boost::wave::support_option_emit_line_directives
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
| boost::wave::support_option_include_guard_detection
#endif
#if BOOST_WAVE_EMIT_PRAGMA_DIRECTIVES != 0
| boost::wave::support_option_emit_pragma_directives
#endif
| boost::wave::support_option_insert_whitespace
));
}
#endif // BOOST_WAVE_SUPPORT_CPP0X != 0
// enable long long support, if appropriate
if (vm.count("long_long")) {
ctx.set_language(
boost::wave::enable_long_long(ctx.get_language()));
}
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
// disable include guard detection
if (vm.count("noguard")) {
ctx.set_language(
boost::wave::enable_include_guard_detection(
ctx.get_language(), false));
}
#endif
// enable preserving comments mode
if (preserve_comments) {
ctx.set_language(
boost::wave::enable_preserve_comments(ctx.get_language()));
}
// control the generation of #line directives
if (vm.count("line")) {
int lineopt = vm["line"].as<int>();
if (0 != lineopt && 1 != lineopt && 2 != lineopt) {
cerr << "wave: bogus value for --line command line option: "
<< lineopt << endl;
return -1;
}
ctx.set_language(
boost::wave::enable_emit_line_directives(ctx.get_language(),
lineopt != 0));
if (2 == lineopt)
ctx.get_hooks().enable_relative_names_in_line_directives(true);
}
// control whether whitespace should be inserted to disambiguate output
if (vm.count("disambiguate")) {
int disambiguateopt = vm["disambiguate"].as<int>();
if (0 != disambiguateopt && 1 != disambiguateopt) {
cerr << "wave: bogus value for --disambiguate command line option: "
<< disambiguateopt << endl;
return -1;
}
ctx.set_language(
boost::wave::enable_insert_whitespace(ctx.get_language(),
disambiguateopt != 0));
}
// add include directories to the system include search paths
if (vm.count("sysinclude")) {
vector<std::string> syspaths = vm["sysinclude"].as<vector<std::string> >();
vector<std::string>::const_iterator end = syspaths.end();
for (vector<std::string>::const_iterator cit = syspaths.begin();
cit != end; ++cit)
{
ctx.add_sysinclude_path(cmd_line_utils::trim_quotes(*cit).c_str());
}
}
// add include directories to the include search paths
if (vm.count("include")) {
cmd_line_utils::include_paths const &ip =
vm["include"].as<cmd_line_utils::include_paths>();
vector<std::string>::const_iterator end = ip.paths.end();
for (vector<std::string>::const_iterator cit = ip.paths.begin();
cit != end; ++cit)
{
ctx.add_include_path(cmd_line_utils::trim_quotes(*cit).c_str());
}
// if -I- was given on the command line, this has to be propagated
if (ip.seen_separator)
ctx.set_sysinclude_delimiter();
// add system include directories to the include path
vector<std::string>::const_iterator sysend = ip.syspaths.end();
for (vector<std::string>::const_iterator syscit = ip.syspaths.begin();
syscit != sysend; ++syscit)
{
ctx.add_sysinclude_path(cmd_line_utils::trim_quotes(*syscit).c_str());
}
}
// add additional defined macros
if (vm.count("define")) {
vector<std::string> const ¯os = vm["define"].as<vector<std::string> >();
vector<std::string>::const_iterator end = macros.end();
for (vector<std::string>::const_iterator cit = macros.begin();
cit != end; ++cit)
{
ctx.add_macro_definition(*cit);
}
}
// add additional predefined macros
if (vm.count("predefine")) {
vector<std::string> const &predefmacros =
vm["predefine"].as<vector<std::string> >();
vector<std::string>::const_iterator end = predefmacros.end();
for (vector<std::string>::const_iterator cit = predefmacros.begin();
cit != end; ++cit)
{
ctx.add_macro_definition(*cit, true);
}
}
// undefine specified macros
if (vm.count("undefine")) {
vector<std::string> const &undefmacros =
vm["undefine"].as<vector<std::string> >();
vector<std::string>::const_iterator end = undefmacros.end();
for (vector<std::string>::const_iterator cit = undefmacros.begin();
cit != end; ++cit)
{
ctx.remove_macro_definition(*cit, true);
}
}
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS == 0
// suppress expansion of specified macros
if (vm.count("noexpand")) {
vector<std::string> const &noexpandmacros =
vm["noexpand"].as<vector<std::string> >();
vector<std::string>::const_iterator end = noexpandmacros.end();
for (vector<std::string>::const_iterator cit = noexpandmacros.begin();
cit != end; ++cit)
{
ctx.get_hooks().add_noexpandmacro(*cit);
}
}
#endif
// maximal include nesting depth
if (vm.count("nesting")) {
int max_depth = vm["nesting"].as<int>();
if (max_depth < 1 || max_depth > 100000) {
cerr << "wave: bogus maximal include nesting depth: "
<< max_depth << endl;
return -1;
}
ctx.set_max_include_nesting_depth(max_depth);
}
// open the output file
if (vm.count("output")) {
// try to open the file, where to put the preprocessed output
fs::path out_file (boost::wave::util::create_path(
vm["output"].as<std::string>()));
if (out_file == "-") {
allow_output = false; // inhibit output initially
default_outfile = "-";
}
else {
out_file = boost::wave::util::complete_path(out_file);
boost::wave::util::create_directories(
boost::wave::util::branch_path(out_file));
output.open(out_file.string().c_str());
if (!output.is_open()) {
cerr << "wave: could not open output file: "
<< out_file.string() << endl;
return -1;
}
if (!license.empty())
output << license;
default_outfile = out_file.string();
}
}
else if (!input_is_stdin && vm.count("autooutput")) {
// generate output in the file <input_base_name>.i
fs::path out_file (boost::wave::util::create_path(file_name));
std::string basename (boost::wave::util::leaf(out_file));
std::string::size_type pos = basename.find_last_of(".");
if (std::string::npos != pos)
basename = basename.substr(0, pos);
out_file = boost::wave::util::branch_path(out_file) / (basename + ".i");
boost::wave::util::create_directories(
boost::wave::util::branch_path(out_file));
output.open(out_file.string().c_str());
if (!output.is_open()) {
cerr << "wave: could not open output file: "
<< out_file.string() << endl;
return -1;
}
if (!license.empty())
output << license;
default_outfile = out_file.string();
}
// we assume the session to be interactive if input is stdin and output is
// stdout and the output is not inhibited
bool is_interactive = input_is_stdin && !output.is_open() && allow_output;
if (is_interactive) {
// if interactive we don't warn for missing endif's etc.
ctx.set_language(
boost::wave::enable_single_line(ctx.get_language()), false);
}
// analyze the input file
context_type::iterator_type first = ctx.begin();
context_type::iterator_type last = ctx.end();
// preprocess the required include files
if (vm.count("forceinclude")) {
// add the filenames to force as include files in _reverse_ order
// the second parameter 'is_last' of the force_include function should
// be set to true for the last (first given) file.
std::vector<std::string> const &force =
vm["forceinclude"].as<std::vector<std::string> >();
std::vector<std::string>::const_reverse_iterator rend = force.rend();
for (std::vector<std::string>::const_reverse_iterator cit = force.rbegin();
cit != rend; /**/)
{
std::string filename(*cit);
first.force_include(filename.c_str(), ++cit == rend);
}
}
elapsed_time.set_print_time(!input_is_stdin && vm.count("timer") > 0);
if (is_interactive) {
print_interactive_version(); // print welcome message
load_state(vm, ctx); // load the internal tables from disc
}
else if (vm.count("state")) {
// the option "state" is usable in interactive mode only
cerr << "wave: ignoring the command line option 'state', "
<< "use it in interactive mode only." << endl;
}
// >>>>>>>>>>>>> The actual preprocessing happens here. <<<<<<<<<<<<<<<<<<<
// loop over the input lines if reading from stdin, otherwise this loop
// will be executed once
do {
// loop over all generated tokens outputting the generated text
bool finished = false;
if (input_is_stdin) {
if (is_interactive)
cout << ">>> "; // prompt if is interactive
// read next line and continue
instring.clear();
if (!read_a_line(instream, instring))
break; // end of input reached
first = ctx.begin(instring.begin(), instring.end());
}
bool need_to_advanve = false;
do {
try {
if (need_to_advanve) {
++first;
need_to_advanve = false;
}
while (first != last) {
// store the last known good token position
current_position = (*first).get_position();
// print out the current token value
if (allow_output) {
if (!output.good()) {
cerr << "wave: problem writing to the current "
<< "output file" << endl;
cerr << report_iostate_error(output.rdstate());
break;
}
if (output.is_open())
output << (*first).get_value();
else
cout << (*first).get_value();
}
// advance to the next token
++first;
}
finished = true;
}
catch (boost::wave::cpp_exception const &e) {
// some preprocessing error
if (is_interactive || boost::wave::is_recoverable(e)) {
error_count += report_error_message(ctx, e);
need_to_advanve = true; // advance to the next token
}
else {
throw; // re-throw for non-recoverable errors
}
}
catch (boost::wave::cpplexer::lexing_exception const &e) {
// some preprocessing error
if (is_interactive ||
boost::wave::cpplexer::is_recoverable(e))
{
error_count += report_error_message(e);
need_to_advanve = true; // advance to the next token
}
else {
throw; // re-throw for non-recoverable errors
}
}
} while (!finished);
} while (input_is_stdin);
if (is_interactive)
save_state(vm, ctx); // write the internal tables to disc
// list all defined macros at the end of the preprocessing
if (vm.count("macronames")) {
if (!list_macro_names(ctx, vm["macronames"].as<std::string>()))
return -1;
}
if (vm.count("macrocounts")) {
if (!list_macro_counts(ctx, vm["macrocounts"].as<std::string>()))
return -1;
}
}
catch (boost::wave::cpp_exception const &e) {
// some preprocessing error
report_error_message(e);
return 1;
}
catch (boost::wave::cpplexer::lexing_exception const &e) {
// some lexing error
report_error_message(e);
return 2;
}
catch (std::exception const &e) {
// use last recognized token to retrieve the error position
cerr
<< current_position << ": "
<< "exception caught: " << e.what()
<< endl;
return 3;
}
catch (...) {
// use last recognized token to retrieve the error position
cerr
<< current_position << ": "
<< "unexpected exception caught." << endl;
return 4;
}
return -error_count; // returns the number of errors as a negative integer
}
///////////////////////////////////////////////////////////////////////////////
// main entry point
int
main (int argc, char *argv[])
{
// test Wave compilation configuration
if (!BOOST_WAVE_TEST_CONFIGURATION()) {
cout << "wave: warning: the library this application was linked against was compiled "
<< endl
<< " using a different configuration (see wave_config.hpp)."
<< endl;
}
// analyze the command line options and arguments
try {
// declare the options allowed on the command line only
po::options_description desc_cmdline ("Options allowed on the command line only");
desc_cmdline.add_options()
("help,h", "print out program usage (this message)")
("version,v", "print the version number")
("copyright", "print out the copyright statement")
("config-file", po::value<vector<std::string> >()->composing(),
"specify a config file (alternatively: @filepath)")
;
// declare the options allowed on command line and in config files
po::options_description desc_generic ("Options allowed additionally in a config file");
desc_generic.add_options()
("output,o", po::value<std::string>(),
"specify a file [arg] to use for output instead of stdout or "
"disable output [-]")
("autooutput,E",
"output goes into a file named <input_basename>.i")
("license", po::value<std::string>(),
"prepend the content of the specified file to each created file")
("include,I", po::value<cmd_line_utils::include_paths>()->composing(),
"specify an additional include directory")
("sysinclude,S", po::value<vector<std::string> >()->composing(),
"specify an additional system include directory")
("forceinclude,F", po::value<std::vector<std::string> >()->composing(),
"force inclusion of the given file")
("define,D", po::value<std::vector<std::string> >()->composing(),
"specify a macro to define (as macro[=[value]])")
("predefine,P", po::value<std::vector<std::string> >()->composing(),
"specify a macro to predefine (as macro[=[value]])")
("undefine,U", po::value<std::vector<std::string> >()->composing(),
"specify a macro to undefine")
#if BOOST_WAVE_USE_DEPRECIATED_PREPROCESSING_HOOKS == 0
("noexpand,N", po::value<std::vector<std::string> >()->composing(),
"specify a macro name, which should not be expanded")
#endif
("nesting,n", po::value<int>(),
"specify a new maximal include nesting depth")
;
po::options_description desc_ext ("Extended options (allowed everywhere)");
desc_ext.add_options()
("traceto,t", po::value<std::string>(),
"output macro expansion tracing information to a file [arg] "
"or to stderr [-]")
("timer", "output overall elapsed computing time to stderr")
("long_long", "enable long long support in C++ mode")
#if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
("variadics", "enable certain C99 extensions in C++ mode")
("c99", "enable C99 mode (implies --variadics)")
#endif
#if BOOST_WAVE_SUPPORT_CPP0X != 0
("c++11", "enable C++11 mode (implies --variadics and --long_long)")
#endif
("listincludes,l", po::value<std::string>(),
"list names of included files to a file [arg] or to stdout [-]")
("macronames,m", po::value<std::string>(),
"list all defined macros to a file [arg] or to stdout [-]")
("macrocounts,c", po::value<std::string>(),
"list macro invocation counts to a file [arg] or to stdout [-]")
("preserve,p", po::value<int>()->default_value(0),
"preserve whitespace\n"
"0: no whitespace is preserved (default),\n"
"1: begin of line whitespace is preserved,\n"
"2: comments and begin of line whitespace is preserved,\n"
"3: all whitespace is preserved")
("line,L", po::value<int>()->default_value(1),
"control the generation of #line directives\n"
"0: no #line directives are generated,\n"
"1: #line directives will be emitted (default),\n"
"2: #line directives will be emitted using relative\n"
" filenames")
("disambiguate", po::value<int>()->default_value(1),
"control whitespace insertion to disambiguate\n"
"consecutive tokens\n"
"0: no additional whitespace is generated,\n"
"1: whitespace is used to disambiguate output (default)")
("extended,x", "enable the #pragma wave system() directive")
#if BOOST_WAVE_SUPPORT_PRAGMA_ONCE != 0
("noguard,G", "disable include guard detection")
("listguards,g", po::value<std::string>(),
"list names of files flagged as 'include once' to a file [arg] "
"or to stdout [-]")
#endif
#if BOOST_WAVE_SERIALIZATION != 0
("state,s", po::value<std::string>(),
"load and save state information from/to the given file [arg] "
"or 'wave.state' [-] (interactive mode only)")
#endif
;
// combine the options for the different usage schemes
po::options_description desc_overall_cmdline;
po::options_description desc_overall_cfgfile;
desc_overall_cmdline.add(desc_cmdline).add(desc_generic).add(desc_ext);
desc_overall_cfgfile.add(desc_generic).add(desc_ext);
// parse command line and store results
using namespace boost::program_options::command_line_style;
po::parsed_options opts(po::parse_command_line(argc, argv,
desc_overall_cmdline, unix_style, cmd_line_utils::at_option_parser));
po::variables_map vm;
po::store(opts, vm);
po::notify(vm);
// // Try to find a wave.cfg in the same directory as the executable was
// // started from. If this exists, treat it as a wave config file
// fs::path filename(argv[0]);
//
// filename = filename.branch_path() / "wave.cfg";
// cmd_line_utils::read_config_file_options(filename.string(),
// desc_overall_cfgfile, vm, true);
// extract the arguments from the parsed command line
vector<po::option> arguments;
std::remove_copy_if(opts.options.begin(), opts.options.end(),
back_inserter(arguments), cmd_line_utils::is_argument());
// try to find a config file somewhere up the filesystem hierarchy
// starting with the input file path. This allows to use a general wave.cfg
// file for all files in a certain project.
if (arguments.size() > 0 && arguments[0].value[0] != "-") {
// construct full path of input file
fs::path input_dir (boost::wave::util::complete_path(
boost::wave::util::create_path(arguments[0].value[0])));
// chop of file name
input_dir = boost::wave::util::branch_path(
boost::wave::util::normalize(input_dir));
// walk up the hierarchy, trying to find a file wave.cfg
while (!input_dir.empty()) {
fs::path filename = input_dir / "wave.cfg";
if (cmd_line_utils::read_config_file_options(filename.string(),
desc_overall_cfgfile, vm, true))
{
break; // break on the first cfg file found
}
input_dir = boost::wave::util::branch_path(input_dir);
}
}
// if there is specified at least one config file, parse it and add the
// options to the main variables_map
if (vm.count("config-file")) {
vector<std::string> const &cfg_files =
vm["config-file"].as<vector<std::string> >();
vector<std::string>::const_iterator end = cfg_files.end();
for (vector<std::string>::const_iterator cit = cfg_files.begin();
cit != end; ++cit)
{
// parse a single config file and store the results
cmd_line_utils::read_config_file_options(*cit,
desc_overall_cfgfile, vm);
}
}
// ... act as required
if (vm.count("help")) {
po::options_description desc_help (
"Usage: wave [options] [@config-file(s)] [file]");
desc_help.add(desc_cmdline).add(desc_generic).add(desc_ext);
cout << desc_help << endl;
return 1;
}
if (vm.count("version")) {
cout << get_version() << endl;
return 0;
}
if (vm.count("copyright")) {
return print_copyright();
}
// if there is no input file given, then take input from stdin
if (0 == arguments.size() || 0 == arguments[0].value.size() ||
arguments[0].value[0] == "-")
{
// preprocess the given input from stdin
return do_actual_work("<stdin>", std::cin, vm, true);
}
else {
if (arguments.size() > 1) {
// this driver understands to parse one input file only
cerr << "wave: more than one input file specified, "
<< "ignoring all but the first!" << endl;
}
std::string file_name(arguments[0].value[0]);
std::ifstream instream(file_name.c_str());
// preprocess the given input file
if (!instream.is_open()) {
cerr << "wave: could not open input file: " << file_name << endl;
return -1;
}
return do_actual_work(file_name, instream, vm, false);
}
}
catch (std::exception const &e) {
cout << "wave: exception caught: " << e.what() << endl;
return 6;
}
catch (...) {
cerr << "wave: unexpected exception caught." << endl;
return 7;
}
}
