poco/CppParser/src/Utility.cpp at develop · cppfool/poco · GitHub

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// Utility.cpp

// $Id: //poco/1.4/CppParser/src/Utility.cpp#3 $

// Library: CppParser

// Package: CppParser

// Module: Utility

// and Contributors.

// SPDX-License-Identifier: BSL-1.0

#include "Poco/CppParser/Utility.h"

#include "Poco/CppParser/Parser.h"

#include "Poco/CppParser/Struct.h"

#include "Poco/StringTokenizer.h"

#include "Poco/Glob.h"

#include "Poco/Path.h"

#include "Poco/File.h"

#include "Poco/Process.h"

#include "Poco/Environment.h"

#include "Poco/NumberFormatter.h"

#include "Poco/Exception.h"

#include <fstream>

#include <cstddef>

using Poco::StringTokenizer;

using Poco::Glob;

using Poco::Path;

using Poco::File;

using Poco::Process;

using Poco::ProcessHandle;

using Poco::Environment;

using Poco::NumberFormatter;

using Poco::Exception;

namespace Poco {

namespace CppParser {

void Utility::parseDir(const std::vector <std::string>& includePattern, const std::vector <std::string>& excludePattern, NameSpace::SymbolTable& st, const std::string& exec, const std::string& options, const std::string& path)

{

std::set<std::string> files;

Utility::buildFileList(files, includePattern, excludePattern);

for (std::set<std::string>::const_iterator it = files.begin(); it != files.end(); ++it)

{

Utility::parse(*it, st, exec, options, path);

}

Utility::fixup(st);

}

void Utility::parse(const std::string& file, NameSpace::SymbolTable& st, const std::string& exec, const std::string& options, const std::string& path)

{

std::string prepFile = Utility::preprocessFile(file, exec, options, path);

Utility::parseOnly(file, st, prepFile, true);

}

void Utility::fixup(NameSpace::SymbolTable& st)

{

for (NameSpace::SymbolTable::iterator it = st.begin(); it != st.end(); ++it)

{

Struct* pStruct = dynamic_cast<Struct*>(it->second);

if (pStruct)

{

pStruct->fixupBases();

}

void Utility::detectPrefixAndIncludes(const std::string& origHFile, std::vector<std::string>& lines, std::string& prefix)

{

std::ifstream istr(origHFile.c_str());

try

{

if (istr.good())

{

std::string x;

istr >> x;

while (x.find("#ifndef") == std::string::npos)

istr >> x;

StringTokenizer tokenizer(x, " \t", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);

poco_assert (tokenizer.count() == 2);

StringTokenizer::Iterator itTmp = tokenizer.begin();

++itTmp;

std::string defValue = *itTmp;

istr >> x;

// now find the corresponsing #define

while (x.find(defValue) == std::string::npos)

istr >> x;

//now parse until a class def is found without a ; at the end

bool stop = false;

std::string prefixHint;

{

istr >> x;

// we add EVERYTHING to lines: reason: used macros/preprocessor defines, conditional includes should all be present in the generated code

// just think about fwd declarations inside a NS_BEGIN ... NS_END block

if (x.find("class") != std::string::npos && x.find(";") == std::string::npos)

{

StringTokenizer tok(x, " \t", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);

StringTokenizer::Iterator it = tok.begin();

while (*it != "class" && it != tok.end())

++it;

// the next after class must be *_API or in case of a template it must be the class name

++it;

std::size_t apiPos = it->find("_API");

if (apiPos != std::string::npos)

{

prefixHint = it->substr(0, apiPos);

}

stop = true;

}

else

{

lines.push_back(x);

}

while (!stop && !istr.eof());

if (!stop)

{

lines.clear();

prefix.clear();

//throw Poco::SyntaxException("Failed to parse file " + origHFile + ".No class declared?");

return;

}

// now search the prefix

if (lines.empty())

{

prefix.clear();

return;

}

// the prefix for that file

std::vector<std::string>::const_iterator it = lines.end();

--it;

std::vector<std::string>::const_iterator itBegin = lines.begin();

for (; it != itBegin; --it)

{

std::size_t prefixPos = it->find("_BEGIN");

if (prefixPos != std::string::npos)

{

prefix = it->substr(0, prefixPos);

if (prefix != prefixHint && !prefixHint.empty())

{

throw Poco::SyntaxException("Conflicting prefixes detected: " + prefixHint + "<->" + prefix);

}

else throw Poco::OpenFileException(origHFile);

}

catch (Exception&)

{

istr.close();

throw;

}

istr.close();

}

std::string Utility::preprocessFile(const std::string& file, const std::string& exec, const std::string& options, const std::string& path)

{

Path pp(file);

pp.setExtension("i");

std::string popts;

for (std::string::const_iterator it = options.begin(); it != options.end(); ++it)

{

if (*it == '%')

popts += pp.getBaseName();

else

popts += *it;

}

StringTokenizer tokenizer(popts, ",;\n", StringTokenizer::TOK_IGNORE_EMPTY | StringTokenizer::TOK_TRIM);

std::vector<std::string> args(tokenizer.begin(), tokenizer.end());

#ifdef _WIN32

std::string quotedFile("\"");

quotedFile += file;

quotedFile += "\"";

args.push_back(quotedFile);

#else

args.push_back(file);

#endif

if (!path.empty())

{

std::string newPath(Environment::get("PATH"));

newPath += Path::pathSeparator();

newPath += path;

Environment::set("PATH", path);

}

ProcessHandle proc = Process::launch(exec, args);

int rc = Process::wait(proc);

if (rc != 0)

{

throw Poco::RuntimeException("Failed to process file");

}

return pp.getFileName();

}

void Utility::parseOnly(const std::string& file, NameSpace::SymbolTable& st, const std::string& preprocessedFile, bool removePreprocessedFile)

{

std::ifstream istr(preprocessedFile.c_str());

try

{

if (istr.good())

{

Parser parser(st, file, istr);

parser.parse();

}

else throw Poco::OpenFileException(preprocessedFile);

}

catch (Exception&)

{

istr.close();

if (removePreprocessedFile)

removeFile(preprocessedFile);

throw;

}

istr.close();

if (removePreprocessedFile)

removeFile(preprocessedFile);

}

void Utility::removeFile(const std::string& preprocessedfile)

{

try

{

File f(preprocessedfile);

f.remove();

}

catch (Exception&)

{

}

void Utility::buildFileList(std::set<std::string>& files, const std::vector<std::string>& includePattern, const std::vector<std::string>& excludePattern)

{

std::set<std::string> temp;

std::vector <std::string>::const_iterator itInc = includePattern.begin();

std::vector <std::string>::const_iterator itIncEnd = includePattern.end();

int options(0);

#if defined(_WIN32)

options |= Glob::GLOB_CASELESS;

#endif

for (; itInc != itIncEnd; ++itInc)

{

Glob::glob(*itInc, temp, options);

}

for (std::set<std::string>::const_iterator it = temp.begin(); it != temp.end(); ++it)

{

Path p(*it);

bool include = true;

std::vector <std::string>::const_iterator itExc = excludePattern.begin();

std::vector <std::string>::const_iterator itExcEnd = excludePattern.end();

for (; itExc != itExcEnd; ++itExc)

{

Glob glob(*itExc, options);

if (glob.match(p.toString()))

include = false;

}

if (include)

files.insert(*it);

}

std::string replace(const std::string& input, const std::string& oldToken, const std::string& newToken)

{

std::string result;

std::size_t start = 0;

std::size_t pos = 0;

{

pos = input.find(oldToken, start);

result.append(input.substr(start, pos-start));

if (pos != std::string::npos)

result.append(newToken);

start = pos + oldToken.length();

}

while (pos != std::string::npos);

return result;

}

} } // namespace Poco::CppParser

poco/CppParser/src/Utility.cpp at develop · cppfool/poco · GitHub

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