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CMake/Source/cmCacheManager.cxx
Brad King 797f7ad87d Merge topic 'else-after-return' 
7b6349da CMake: don't use else after return
50ad1e0a CTest: don't use else after return
7f97a6c9 CPack: don't use else after return
4988b914 CursesDialog: don't use else after return
2016-08-23 09:00:00 -04:00

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmCacheManager.h"
#include "cmGeneratedFileStream.h"
#include "cmSystemTools.h"
#include "cmVersion.h"
#include "cmake.h"
#include <algorithm>
#include <cmsys/FStream.hxx>
#include <cmsys/Glob.hxx>
#include <sstream>
#include <stdio.h>
#include <string.h>
cmCacheManager::cmCacheManager()
{
this->CacheMajorVersion = 0;
this->CacheMinorVersion = 0;
}
void cmCacheManager::CleanCMakeFiles(const std::string& path)
{
std::string glob = path;
glob += cmake::GetCMakeFilesDirectory();
glob += "/*.cmake";
cmsys::Glob globIt;
globIt.FindFiles(glob);
std::vector<std::string> files = globIt.GetFiles();
std::for_each(files.begin(), files.end(), cmSystemTools::RemoveFile);
}
bool cmCacheManager::LoadCache(const std::string& path, bool internal,
std::set<std::string>& excludes,
std::set<std::string>& includes)
{
std::string cacheFile = path;
cacheFile += "/CMakeCache.txt";
// clear the old cache, if we are reading in internal values
if (internal) {
this->Cache.clear();
}
if (!cmSystemTools::FileExists(cacheFile.c_str())) {
this->CleanCMakeFiles(path);
return false;
}
cmsys::ifstream fin(cacheFile.c_str());
if (!fin) {
return false;
}
const char* realbuffer;
std::string buffer;
std::string entryKey;
unsigned int lineno = 0;
while (fin) {
// Format is key:type=value
std::string helpString;
CacheEntry e;
cmSystemTools::GetLineFromStream(fin, buffer);
lineno++;
realbuffer = buffer.c_str();
while (*realbuffer != '0' &&
(*realbuffer == ' ' || *realbuffer == '\t' || *realbuffer == '\r' ||
*realbuffer == '\n')) {
if (*realbuffer == '\n') {
lineno++;
}
realbuffer++;
}
// skip blank lines and comment lines
if (realbuffer[0] == '#' || realbuffer[0] == 0) {
continue;
}
while (realbuffer[0] == '/' && realbuffer[1] == '/') {
if ((realbuffer[2] == '\\') && (realbuffer[3] == 'n')) {
helpString += "\n";
helpString += &realbuffer[4];
} else {
helpString += &realbuffer[2];
}
cmSystemTools::GetLineFromStream(fin, buffer);
lineno++;
realbuffer = buffer.c_str();
if (!fin) {
continue;
}
}
e.SetProperty("HELPSTRING", helpString.c_str());
if (cmState::ParseCacheEntry(realbuffer, entryKey, e.Value, e.Type)) {
if (excludes.find(entryKey) == excludes.end()) {
// Load internal values if internal is set.
// If the entry is not internal to the cache being loaded
// or if it is in the list of internal entries to be
// imported, load it.
if (internal || (e.Type != cmState::INTERNAL) ||
(includes.find(entryKey) != includes.end())) {
// If we are loading the cache from another project,
// make all loaded entries internal so that it is
// not visible in the gui
if (!internal) {
e.Type = cmState::INTERNAL;
helpString = "DO NOT EDIT, ";
helpString += entryKey;
helpString += " loaded from external file. "
"To change this value edit this file: ";
helpString += path;
helpString += "/CMakeCache.txt";
e.SetProperty("HELPSTRING", helpString.c_str());
}
if (!this->ReadPropertyEntry(entryKey, e)) {
e.Initialized = true;
this->Cache[entryKey] = e;
}
}
}
} else {
std::ostringstream error;
error << "Parse error in cache file " << cacheFile;
error << " on line " << lineno << ". Offending entry: " << realbuffer;
cmSystemTools::Error(error.str().c_str());
}
}
this->CacheMajorVersion = 0;
this->CacheMinorVersion = 0;
if (const char* cmajor =
this->GetInitializedCacheValue("CMAKE_CACHE_MAJOR_VERSION")) {
unsigned int v = 0;
if (sscanf(cmajor, "%u", &v) == 1) {
this->CacheMajorVersion = v;
}
if (const char* cminor =
this->GetInitializedCacheValue("CMAKE_CACHE_MINOR_VERSION")) {
if (sscanf(cminor, "%u", &v) == 1) {
this->CacheMinorVersion = v;
}
}
} else {
// CMake version not found in the list file.
// Set as version 0.0
this->AddCacheEntry("CMAKE_CACHE_MINOR_VERSION", "0",
"Minor version of cmake used to create the "
"current loaded cache",
cmState::INTERNAL);
this->AddCacheEntry("CMAKE_CACHE_MAJOR_VERSION", "0",
"Major version of cmake used to create the "
"current loaded cache",
cmState::INTERNAL);
}
// check to make sure the cache directory has not
// been moved
const char* oldDir = this->GetInitializedCacheValue("CMAKE_CACHEFILE_DIR");
if (internal && oldDir) {
std::string currentcwd = path;
std::string oldcwd = oldDir;
cmSystemTools::ConvertToUnixSlashes(currentcwd);
currentcwd += "/CMakeCache.txt";
oldcwd += "/CMakeCache.txt";
if (!cmSystemTools::SameFile(oldcwd, currentcwd)) {
std::string message =
std::string("The current CMakeCache.txt directory ") + currentcwd +
std::string(" is different than the directory ") +
std::string(this->GetInitializedCacheValue("CMAKE_CACHEFILE_DIR")) +
std::string(" where CMakeCache.txt was created. This may result "
"in binaries being created in the wrong place. If you "
"are not sure, reedit the CMakeCache.txt");
cmSystemTools::Error(message.c_str());
}
}
return true;
}
const char* cmCacheManager::PersistentProperties[] = { "ADVANCED", "MODIFIED",
"STRINGS", CM_NULLPTR };
bool cmCacheManager::ReadPropertyEntry(std::string const& entryKey,
CacheEntry& e)
{
// All property entries are internal.
if (e.Type != cmState::INTERNAL) {
return false;
}
const char* end = entryKey.c_str() + entryKey.size();
for (const char** p = this->PersistentProperties; *p; ++p) {
std::string::size_type plen = strlen(*p) + 1;
if (entryKey.size() > plen && *(end - plen) == '-' &&
strcmp(end - plen + 1, *p) == 0) {
std::string key = entryKey.substr(0, entryKey.size() - plen);
cmCacheManager::CacheIterator it = this->GetCacheIterator(key.c_str());
if (it.IsAtEnd()) {
// Create an entry and store the property.
CacheEntry& ne = this->Cache[key];
ne.Type = cmState::UNINITIALIZED;
ne.SetProperty(*p, e.Value.c_str());
} else {
// Store this property on its entry.
it.SetProperty(*p, e.Value.c_str());
}
return true;
}
}
return false;
}
void cmCacheManager::WritePropertyEntries(std::ostream& os,
CacheIterator const& i)
{
for (const char** p = this->PersistentProperties; *p; ++p) {
if (const char* value = i.GetProperty(*p)) {
std::string helpstring = *p;
helpstring += " property for variable: ";
helpstring += i.GetName();
cmCacheManager::OutputHelpString(os, helpstring);
std::string key = i.GetName();
key += "-";
key += *p;
this->OutputKey(os, key);
os << ":INTERNAL=";
this->OutputValue(os, value);
os << "\n";
}
}
}
bool cmCacheManager::SaveCache(const std::string& path)
{
std::string cacheFile = path;
cacheFile += "/CMakeCache.txt";
cmGeneratedFileStream fout(cacheFile.c_str());
fout.SetCopyIfDifferent(true);
if (!fout) {
cmSystemTools::Error("Unable to open cache file for save. ",
cacheFile.c_str());
cmSystemTools::ReportLastSystemError("");
return false;
}
// before writing the cache, update the version numbers
// to the
char temp[1024];
sprintf(temp, "%d", cmVersion::GetMinorVersion());
this->AddCacheEntry("CMAKE_CACHE_MINOR_VERSION", temp,
"Minor version of cmake used to create the "
"current loaded cache",
cmState::INTERNAL);
sprintf(temp, "%d", cmVersion::GetMajorVersion());
this->AddCacheEntry("CMAKE_CACHE_MAJOR_VERSION", temp,
"Major version of cmake used to create the "
"current loaded cache",
cmState::INTERNAL);
sprintf(temp, "%d", cmVersion::GetPatchVersion());
this->AddCacheEntry("CMAKE_CACHE_PATCH_VERSION", temp,
"Patch version of cmake used to create the "
"current loaded cache",
cmState::INTERNAL);
// Let us store the current working directory so that if somebody
// Copies it, he will not be surprised
std::string currentcwd = path;
if (currentcwd[0] >= 'A' && currentcwd[0] <= 'Z' && currentcwd[1] == ':') {
// Cast added to avoid compiler warning. Cast is ok because
// value is guaranteed to fit in char by the above if...
currentcwd[0] = static_cast<char>(currentcwd[0] - 'A' + 'a');
}
cmSystemTools::ConvertToUnixSlashes(currentcwd);
this->AddCacheEntry("CMAKE_CACHEFILE_DIR", currentcwd.c_str(),
"This is the directory where this CMakeCache.txt"
" was created",
cmState::INTERNAL);
/* clang-format off */
fout << "# This is the CMakeCache file.\n"
<< "# For build in directory: " << currentcwd << "\n"
<< "# It was generated by CMake: "
<< cmSystemTools::GetCMakeCommand() << std::endl;
/* clang-format on */
/* clang-format off */
fout << "# You can edit this file to change values found and used by cmake."
<< std::endl
<< "# If you do not want to change any of the values, simply exit the "
"editor." << std::endl
<< "# If you do want to change a value, simply edit, save, and exit "
"the editor." << std::endl
<< "# The syntax for the file is as follows:\n"
<< "# KEY:TYPE=VALUE\n"
<< "# KEY is the name of a variable in the cache.\n"
<< "# TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT "
"TYPE!." << std::endl
<< "# VALUE is the current value for the KEY.\n\n";
/* clang-format on */
fout << "########################\n";
fout << "# EXTERNAL cache entries\n";
fout << "########################\n";
fout << "\n";
for (std::map<std::string, CacheEntry>::const_iterator i =
this->Cache.begin();
i != this->Cache.end(); ++i) {
const CacheEntry& ce = (*i).second;
cmState::CacheEntryType t = ce.Type;
if (!ce.Initialized) {
/*
// This should be added in, but is not for now.
cmSystemTools::Error("Cache entry \"", (*i).first.c_str(),
"\" is uninitialized");
*/
} else if (t != cmState::INTERNAL) {
// Format is key:type=value
if (const char* help = ce.GetProperty("HELPSTRING")) {
cmCacheManager::OutputHelpString(fout, help);
} else {
cmCacheManager::OutputHelpString(fout, "Missing description");
}
this->OutputKey(fout, i->first);
fout << ":" << cmState::CacheEntryTypeToString(t) << "=";
this->OutputValue(fout, ce.Value);
fout << "\n\n";
}
}
fout << "\n";
fout << "########################\n";
fout << "# INTERNAL cache entries\n";
fout << "########################\n";
fout << "\n";
for (cmCacheManager::CacheIterator i = this->NewIterator(); !i.IsAtEnd();
i.Next()) {
if (!i.Initialized()) {
continue;
}
cmState::CacheEntryType t = i.GetType();
this->WritePropertyEntries(fout, i);
if (t == cmState::INTERNAL) {
// Format is key:type=value
if (const char* help = i.GetProperty("HELPSTRING")) {
this->OutputHelpString(fout, help);
}
this->OutputKey(fout, i.GetName());
fout << ":" << cmState::CacheEntryTypeToString(t) << "=";
this->OutputValue(fout, i.GetValue());
fout << "\n";
}
}
fout << "\n";
fout.Close();
std::string checkCacheFile = path;
checkCacheFile += cmake::GetCMakeFilesDirectory();
cmSystemTools::MakeDirectory(checkCacheFile.c_str());
checkCacheFile += "/cmake.check_cache";
cmsys::ofstream checkCache(checkCacheFile.c_str());
if (!checkCache) {
cmSystemTools::Error("Unable to open check cache file for write. ",
checkCacheFile.c_str());
return false;
}
checkCache << "# This file is generated by cmake for dependency checking "
"of the CMakeCache.txt file\n";
return true;
}
bool cmCacheManager::DeleteCache(const std::string& path)
{
std::string cacheFile = path;
cmSystemTools::ConvertToUnixSlashes(cacheFile);
std::string cmakeFiles = cacheFile;
cacheFile += "/CMakeCache.txt";
if (cmSystemTools::FileExists(cacheFile.c_str())) {
cmSystemTools::RemoveFile(cacheFile);
// now remove the files in the CMakeFiles directory
// this cleans up language cache files
cmakeFiles += cmake::GetCMakeFilesDirectory();
if (cmSystemTools::FileIsDirectory(cmakeFiles)) {
cmSystemTools::RemoveADirectory(cmakeFiles);
}
}
return true;
}
void cmCacheManager::OutputKey(std::ostream& fout, std::string const& key)
{
// support : in key name by double quoting
const char* q =
(key.find(':') != key.npos || key.find("//") == 0) ? "\"" : "";
fout << q << key << q;
}
void cmCacheManager::OutputValue(std::ostream& fout, std::string const& value)
{
// if value has trailing space or tab, enclose it in single quotes
if (!value.empty() &&
(value[value.size() - 1] == ' ' || value[value.size() - 1] == '\t')) {
fout << '\'' << value << '\'';
} else {
fout << value;
}
}
void cmCacheManager::OutputHelpString(std::ostream& fout,
const std::string& helpString)
{
std::string::size_type end = helpString.size();
if (end == 0) {
return;
}
std::string oneLine;
std::string::size_type pos = 0;
for (std::string::size_type i = 0; i <= end; i++) {
if ((i == end) || (helpString[i] == '\n') ||
((i - pos >= 60) && (helpString[i] == ' '))) {
fout << "//";
if (helpString[pos] == '\n') {
pos++;
fout << "\\n";
}
oneLine = helpString.substr(pos, i - pos);
fout << oneLine << "\n";
pos = i;
}
}
}
void cmCacheManager::RemoveCacheEntry(const std::string& key)
{
CacheEntryMap::iterator i = this->Cache.find(key);
if (i != this->Cache.end()) {
this->Cache.erase(i);
}
}
cmCacheManager::CacheEntry* cmCacheManager::GetCacheEntry(
const std::string& key)
{
CacheEntryMap::iterator i = this->Cache.find(key);
if (i != this->Cache.end()) {
return &i->second;
}
return CM_NULLPTR;
}
cmCacheManager::CacheIterator cmCacheManager::GetCacheIterator(const char* key)
{
return CacheIterator(*this, key);
}
const char* cmCacheManager::GetInitializedCacheValue(
const std::string& key) const
{
CacheEntryMap::const_iterator i = this->Cache.find(key);
if (i != this->Cache.end() && i->second.Initialized) {
return i->second.Value.c_str();
}
return CM_NULLPTR;
}
void cmCacheManager::PrintCache(std::ostream& out) const
{
out << "=================================================" << std::endl;
out << "CMakeCache Contents:" << std::endl;
for (std::map<std::string, CacheEntry>::const_iterator i =
this->Cache.begin();
i != this->Cache.end(); ++i) {
if ((*i).second.Type != cmState::INTERNAL) {
out << (*i).first << " = " << (*i).second.Value << std::endl;
}
}
out << "\n\n";
out << "To change values in the CMakeCache, " << std::endl
<< "edit CMakeCache.txt in your output directory.\n";
out << "=================================================" << std::endl;
}
void cmCacheManager::AddCacheEntry(const std::string& key, const char* value,
const char* helpString,
cmState::CacheEntryType type)
{
CacheEntry& e = this->Cache[key];
if (value) {
e.Value = value;
e.Initialized = true;
} else {
e.Value = "";
}
e.Type = type;
// make sure we only use unix style paths
if (type == cmState::FILEPATH || type == cmState::PATH) {
if (e.Value.find(';') != e.Value.npos) {
std::vector<std::string> paths;
cmSystemTools::ExpandListArgument(e.Value, paths);
const char* sep = "";
e.Value = "";
for (std::vector<std::string>::iterator i = paths.begin();
i != paths.end(); ++i) {
cmSystemTools::ConvertToUnixSlashes(*i);
e.Value += sep;
e.Value += *i;
sep = ";";
}
} else {
cmSystemTools::ConvertToUnixSlashes(e.Value);
}
}
e.SetProperty("HELPSTRING", helpString
? helpString
: "(This variable does not exist and should not be used)");
}
bool cmCacheManager::CacheIterator::IsAtEnd() const
{
return this->Position == this->Container.Cache.end();
}
void cmCacheManager::CacheIterator::Begin()
{
this->Position = this->Container.Cache.begin();
}
bool cmCacheManager::CacheIterator::Find(const std::string& key)
{
this->Position = this->Container.Cache.find(key);
return !this->IsAtEnd();
}
void cmCacheManager::CacheIterator::Next()
{
if (!this->IsAtEnd()) {
++this->Position;
}
}
std::vector<std::string> cmCacheManager::CacheIterator::GetPropertyList() const
{
return this->GetEntry().GetPropertyList();
}
void cmCacheManager::CacheIterator::SetValue(const char* value)
{
if (this->IsAtEnd()) {
return;
}
CacheEntry* entry = &this->GetEntry();
if (value) {
entry->Value = value;
entry->Initialized = true;
} else {
entry->Value = "";
}
}
bool cmCacheManager::CacheIterator::GetValueAsBool() const
{
return cmSystemTools::IsOn(this->GetEntry().Value.c_str());
}
std::vector<std::string> cmCacheManager::CacheEntry::GetPropertyList() const
{
return this->Properties.GetPropertyList();
}
const char* cmCacheManager::CacheEntry::GetProperty(
const std::string& prop) const
{
if (prop == "TYPE") {
return cmState::CacheEntryTypeToString(this->Type);
}
if (prop == "VALUE") {
return this->Value.c_str();
}
return this->Properties.GetPropertyValue(prop);
}
void cmCacheManager::CacheEntry::SetProperty(const std::string& prop,
const char* value)
{
if (prop == "TYPE") {
this->Type = cmState::StringToCacheEntryType(value ? value : "STRING");
} else if (prop == "VALUE") {
this->Value = value ? value : "";
} else {
this->Properties.SetProperty(prop, value);
}
}
void cmCacheManager::CacheEntry::AppendProperty(const std::string& prop,
const char* value,
bool asString)
{
if (prop == "TYPE") {
this->Type = cmState::StringToCacheEntryType(value ? value : "STRING");
} else if (prop == "VALUE") {
if (value) {
if (!this->Value.empty() && *value && !asString) {
this->Value += ";";
}
this->Value += value;
}
} else {
this->Properties.AppendProperty(prop, value, asString);
}
}
const char* cmCacheManager::CacheIterator::GetProperty(
const std::string& prop) const
{
if (!this->IsAtEnd()) {
return this->GetEntry().GetProperty(prop);
}
return CM_NULLPTR;
}
void cmCacheManager::CacheIterator::SetProperty(const std::string& p,
const char* v)
{
if (!this->IsAtEnd()) {
this->GetEntry().SetProperty(p, v);
}
}
void cmCacheManager::CacheIterator::AppendProperty(const std::string& p,
const char* v,
bool asString)
{
if (!this->IsAtEnd()) {
this->GetEntry().AppendProperty(p, v, asString);
}
}
bool cmCacheManager::CacheIterator::GetPropertyAsBool(
const std::string& prop) const
{
if (const char* value = this->GetProperty(prop)) {
return cmSystemTools::IsOn(value);
}
return false;
}
void cmCacheManager::CacheIterator::SetProperty(const std::string& p, bool v)
{
this->SetProperty(p, v ? "ON" : "OFF");
}
bool cmCacheManager::CacheIterator::PropertyExists(
const std::string& prop) const
{
return this->GetProperty(prop) != CM_NULLPTR;
}
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