cppcheck/lib/library.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2013 Daniel Marjamäki and 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 "library.h"
#include "path.h"
#include "tinyxml2.h"
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#include <string>
#include <algorithm>
Library::Library() : allocid(0)
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{
}
Library::Library(const Library &lib) :
use(lib.use),
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leakignore(lib.leakignore),
argumentChecks(lib.argumentChecks),
returnuninitdata(lib.returnuninitdata),
allocid(lib.allocid),
_alloc(lib._alloc),
_dealloc(lib._dealloc),
_noreturn(lib._noreturn)
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{
}
Library::~Library() { }
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bool Library::load(const char exename[], const char path[])
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{
tinyxml2::XMLDocument doc;
if (std::strchr(path,',') != NULL) {
bool ret = true;
std::string p(path);
while (p.find(",") != std::string::npos) {
const std::string::size_type pos = p.find(",");
ret &= load(exename, p.substr(0,pos).c_str());
p = p.substr(pos+1);
}
if (!p.empty())
ret &= load(exename, p.c_str());
return ret;
}
// open file..
FILE *fp = fopen(path, "rb");
if (fp == NULL) {
// failed to open file.. is there no extension?
std::string fullfilename(path);
if (Path::getFilenameExtension(fullfilename) == "") {
fullfilename += ".cfg";
fp = fopen(fullfilename.c_str(), "rb");
}
if (fp==NULL) {
// Try to locate the library configuration in the installation folder..
std::string temp = exename;
std::replace(temp.begin(), temp.end(), '\\', '/');
const std::string installfolder = Path::getPathFromFilename(temp);
const std::string filename = installfolder + "cfg/" + fullfilename;
fp = fopen(filename.c_str(), "rb");
}
if (fp == NULL)
return false;
}
if (doc.LoadFile(fp) != tinyxml2::XML_NO_ERROR)
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return false;
const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
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if (strcmp(rootnode->Name(),"def") != 0)
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return false;
for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
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if (strcmp(node->Name(),"memory")==0) {
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while (!ismemory(++allocid));
for (const tinyxml2::XMLElement *memorynode = node->FirstChildElement(); memorynode; memorynode = memorynode->NextSiblingElement()) {
if (strcmp(memorynode->Name(),"alloc")==0) {
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_alloc[memorynode->GetText()] = allocid;
const char *init = memorynode->Attribute("init");
if (init && strcmp(init,"false")==0) {
returnuninitdata.insert(memorynode->GetText());
}
} else if (strcmp(memorynode->Name(),"dealloc")==0)
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_dealloc[memorynode->GetText()] = allocid;
else if (strcmp(memorynode->Name(),"use")==0)
use.insert(memorynode->GetText());
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else
return false;
}
}
else if (strcmp(node->Name(),"function")==0) {
const char *name = node->Attribute("name");
if (name == NULL)
return false;
for (const tinyxml2::XMLElement *functionnode = node->FirstChildElement(); functionnode; functionnode = functionnode->NextSiblingElement()) {
if (strcmp(functionnode->Name(),"noreturn")==0)
_noreturn[name] = (strcmp(functionnode->GetText(), "true") == 0);
else if (strcmp(functionnode->Name(),"leak-ignore")==0)
leakignore.insert(name);
else if (strcmp(functionnode->Name(),"arg")==0 && functionnode->Attribute("nr") != NULL) {
const int nr = atoi(functionnode->Attribute("nr"));
bool notnull = false;
bool notuninit = false;
bool formatstr = false;
bool strz = false;
for (const tinyxml2::XMLElement *argnode = functionnode->FirstChildElement(); argnode; argnode = argnode->NextSiblingElement()) {
if (strcmp(argnode->Name(), "not-null") == 0)
notnull = true;
else if (strcmp(argnode->Name(), "not-uninit") == 0)
notuninit = true;
else if (strcmp(argnode->Name(), "formatstr") == 0)
notuninit = true;
else if (strcmp(argnode->Name(), "strz") == 0)
notuninit = true;
else
return false;
}
argumentChecks[name][nr].notnull = notnull;
argumentChecks[name][nr].notuninit = notuninit;
argumentChecks[name][nr].formatstr = formatstr;
argumentChecks[name][nr].strz = strz;
} else
return false;
}
} else
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return false;
}
return true;
}