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cppcheck/lib/platform.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2022 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "platform.h"
#include "path.h"
#include <cstring>
#include <iostream>
#include <limits>
#include <vector>
#include <tinyxml2.h>
cppcheck::Platform::Platform()
{
// This assumes the code you are checking is for the same architecture this is compiled on.
#if defined(_WIN64)
platform(Win64);
#elif defined(_WIN32)
platform(Win32A);
#else
platform(Native);
#endif
}
bool cppcheck::Platform::platform(cppcheck::Platform::PlatformType type)
{
switch (type) {
case Unspecified: // unknown type sizes (sizes etc are set but are not known)
case Native: // same as system this code was compile on
platformType = type;
sizeof_bool = sizeof(bool);
sizeof_short = sizeof(short);
sizeof_int = sizeof(int);
sizeof_long = sizeof(long);
sizeof_long_long = sizeof(long long);
sizeof_float = sizeof(float);
sizeof_double = sizeof(double);
sizeof_long_double = sizeof(long double);
sizeof_wchar_t = sizeof(wchar_t);
sizeof_size_t = sizeof(std::size_t);
sizeof_pointer = sizeof(void *);
if (type == Unspecified) {
defaultSign = '\0';
} else {
defaultSign = std::numeric_limits<char>::is_signed ? 's' : 'u';
}
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Win32W:
case Win32A:
platformType = type;
sizeof_bool = 1; // 4 in Visual C++ 4.2
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 8;
sizeof_wchar_t = 2;
sizeof_size_t = 4;
sizeof_pointer = 4;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Win64:
platformType = type;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 8;
sizeof_wchar_t = 2;
sizeof_size_t = 8;
sizeof_pointer = 8;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Unix32:
platformType = type;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 4;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 12;
sizeof_wchar_t = 4;
sizeof_size_t = 4;
sizeof_pointer = 4;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case Unix64:
platformType = type;
sizeof_bool = 1;
sizeof_short = 2;
sizeof_int = 4;
sizeof_long = 8;
sizeof_long_long = 8;
sizeof_float = 4;
sizeof_double = 8;
sizeof_long_double = 16;
sizeof_wchar_t = 4;
sizeof_size_t = 8;
sizeof_pointer = 8;
defaultSign = '\0';
char_bit = 8;
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
return true;
case PlatformFile:
// sizes are not set.
return false;
}
// unsupported platform
return false;
}
bool cppcheck::Platform::loadPlatformFile(const char exename[], const std::string &filename, bool verbose)
{
// TODO: only append .xml if missing
// TODO: use native separators
std::vector<std::string> filenames;
filenames.push_back(filename);
filenames.push_back(filename + ".xml");
filenames.push_back("platforms/" + filename);
filenames.push_back("platforms/" + filename + ".xml");
if (exename && (std::string::npos != Path::fromNativeSeparators(exename).find('/'))) {
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + filename);
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename);
filenames.push_back(Path::getPathFromFilename(Path::fromNativeSeparators(exename)) + "platforms/" + filename + ".xml");
}
#ifdef FILESDIR
std::string filesdir = FILESDIR;
if (!filesdir.empty() && filesdir[filesdir.size()-1] != '/')
filesdir += '/';
filenames.push_back(filesdir + ("platforms/" + filename));
filenames.push_back(filesdir + ("platforms/" + filename + ".xml"));
#endif
// open file..
tinyxml2::XMLDocument doc;
bool success = false;
for (const std::string & f : filenames) {
if (verbose)
std::cout << "try to load platform file '" << f << "' ... ";
if (doc.LoadFile(f.c_str()) == tinyxml2::XML_SUCCESS) {
if (verbose)
std::cout << "Success" << std::endl;
success = true;
break;
}
if (verbose)
std::cout << doc.ErrorStr() << std::endl;
}
if (!success)
return false;
return loadFromXmlDocument(&doc);
}
static unsigned int xmlTextAsUInt(const tinyxml2::XMLElement* node, bool& error)
{
unsigned int retval = 0;
if (node->QueryUnsignedText(&retval) != tinyxml2::XML_SUCCESS)
error = true;
return retval;
}
bool cppcheck::Platform::loadFromXmlDocument(const tinyxml2::XMLDocument *doc)
{
const tinyxml2::XMLElement * const rootnode = doc->FirstChildElement();
if (!rootnode || std::strcmp(rootnode->Name(), "platform") != 0)
return false;
bool error = false;
for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
if (std::strcmp(node->Name(), "default-sign") == 0) {
const char* str = node->GetText();
if (str)
defaultSign = *str;
else
error = true;
} else if (std::strcmp(node->Name(), "char_bit") == 0)
char_bit = xmlTextAsUInt(node, error);
else if (std::strcmp(node->Name(), "sizeof") == 0) {
for (const tinyxml2::XMLElement *sz = node->FirstChildElement(); sz; sz = sz->NextSiblingElement()) {
if (std::strcmp(sz->Name(), "short") == 0)
sizeof_short = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "bool") == 0)
sizeof_bool = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "int") == 0)
sizeof_int = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long") == 0)
sizeof_long = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long-long") == 0)
sizeof_long_long = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "float") == 0)
sizeof_float = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "double") == 0)
sizeof_double = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "long-double") == 0)
sizeof_long_double = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "pointer") == 0)
sizeof_pointer = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "size_t") == 0)
sizeof_size_t = xmlTextAsUInt(sz, error);
else if (std::strcmp(sz->Name(), "wchar_t") == 0)
sizeof_wchar_t = xmlTextAsUInt(sz, error);
}
}
}
short_bit = char_bit * sizeof_short;
int_bit = char_bit * sizeof_int;
long_bit = char_bit * sizeof_long;
long_long_bit = char_bit * sizeof_long_long;
platformType = PlatformFile;
return !error;
}
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