CMake/Source/cmFindProgramCommand.cxx
2017-06-04 00:48:21 +02:00

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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFindProgramCommand.h"
#include "cmMakefile.h"
#include "cmStateTypes.h"
#include "cmSystemTools.h"
class cmExecutionStatus;
#if defined(__APPLE__)
#include <CoreFoundation/CoreFoundation.h>
#endif
struct cmFindProgramHelper
{
cmFindProgramHelper()
{
#if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
// Consider platform-specific extensions.
this->Extensions.push_back(".com");
this->Extensions.push_back(".exe");
#endif
// Consider original name with no extensions.
this->Extensions.push_back("");
}
// List of valid extensions.
std::vector<std::string> Extensions;
// Keep track of the best program file found so far.
std::string BestPath;
// Current names under consideration.
std::vector<std::string> Names;
// Current full path under consideration.
std::string TestPath;
void AddName(std::string const& name) { this->Names.push_back(name); }
void SetName(std::string const& name)
{
this->Names.clear();
this->AddName(name);
}
bool CheckDirectory(std::string const& path)
{
for (std::vector<std::string>::iterator i = this->Names.begin();
i != this->Names.end(); ++i) {
if (this->CheckDirectoryForName(path, *i)) {
return true;
}
}
return false;
}
bool CheckDirectoryForName(std::string const& path, std::string const& name)
{
for (std::vector<std::string>::iterator ext = this->Extensions.begin();
ext != this->Extensions.end(); ++ext) {
this->TestPath = path;
this->TestPath += name;
if (!ext->empty() && cmSystemTools::StringEndsWith(name, ext->c_str())) {
continue;
}
this->TestPath += *ext;
if (cmSystemTools::FileExists(this->TestPath, true)) {
this->BestPath = cmSystemTools::CollapseFullPath(this->TestPath);
return true;
}
}
return false;
}
};
cmFindProgramCommand::cmFindProgramCommand()
{
this->NamesPerDirAllowed = true;
}
// cmFindProgramCommand
bool cmFindProgramCommand::InitialPass(std::vector<std::string> const& argsIn,
cmExecutionStatus&)
{
this->VariableDocumentation = "Path to a program.";
this->CMakePathName = "PROGRAM";
// call cmFindBase::ParseArguments
if (!this->ParseArguments(argsIn)) {
return false;
}
if (this->AlreadyInCache) {
// If the user specifies the entry on the command line without a
// type we should add the type and docstring but keep the original
// value.
if (this->AlreadyInCacheWithoutMetaInfo) {
this->Makefile->AddCacheDefinition(this->VariableName, "",
this->VariableDocumentation.c_str(),
cmStateEnums::FILEPATH);
}
return true;
}
std::string result = FindProgram();
if (result != "") {
// Save the value in the cache
this->Makefile->AddCacheDefinition(this->VariableName, result.c_str(),
this->VariableDocumentation.c_str(),
cmStateEnums::FILEPATH);
return true;
}
this->Makefile->AddCacheDefinition(
this->VariableName, (this->VariableName + "-NOTFOUND").c_str(),
this->VariableDocumentation.c_str(), cmStateEnums::FILEPATH);
return true;
}
std::string cmFindProgramCommand::FindProgram()
{
std::string program;
if (this->SearchAppBundleFirst || this->SearchAppBundleOnly) {
program = FindAppBundle();
}
if (program.empty() && !this->SearchAppBundleOnly) {
program = this->FindNormalProgram();
}
if (program.empty() && this->SearchAppBundleLast) {
program = this->FindAppBundle();
}
return program;
}
std::string cmFindProgramCommand::FindNormalProgram()
{
if (this->NamesPerDir) {
return this->FindNormalProgramNamesPerDir();
}
return this->FindNormalProgramDirsPerName();
}
std::string cmFindProgramCommand::FindNormalProgramNamesPerDir()
{
// Search for all names in each directory.
cmFindProgramHelper helper;
for (std::vector<std::string>::const_iterator ni = this->Names.begin();
ni != this->Names.end(); ++ni) {
helper.AddName(*ni);
}
// Check for the names themselves (e.g. absolute paths).
if (helper.CheckDirectory(std::string())) {
return helper.BestPath;
}
// Search every directory.
for (std::vector<std::string>::const_iterator p = this->SearchPaths.begin();
p != this->SearchPaths.end(); ++p) {
if (helper.CheckDirectory(*p)) {
return helper.BestPath;
}
}
// Couldn't find the program.
return "";
}
std::string cmFindProgramCommand::FindNormalProgramDirsPerName()
{
// Search the entire path for each name.
cmFindProgramHelper helper;
for (std::vector<std::string>::const_iterator ni = this->Names.begin();
ni != this->Names.end(); ++ni) {
// Switch to searching for this name.
helper.SetName(*ni);
// Check for the name by itself (e.g. an absolute path).
if (helper.CheckDirectory(std::string())) {
return helper.BestPath;
}
// Search every directory.
for (std::vector<std::string>::const_iterator p =
this->SearchPaths.begin();
p != this->SearchPaths.end(); ++p) {
if (helper.CheckDirectory(*p)) {
return helper.BestPath;
}
}
}
// Couldn't find the program.
return "";
}
std::string cmFindProgramCommand::FindAppBundle()
{
for (std::vector<std::string>::const_iterator name = this->Names.begin();
name != this->Names.end(); ++name) {
std::string appName = *name + std::string(".app");
std::string appPath =
cmSystemTools::FindDirectory(appName, this->SearchPaths, true);
if (!appPath.empty()) {
std::string executable = GetBundleExecutable(appPath);
if (!executable.empty()) {
return cmSystemTools::CollapseFullPath(executable);
}
}
}
// Couldn't find app bundle
return "";
}
std::string cmFindProgramCommand::GetBundleExecutable(
std::string const& bundlePath)
{
std::string executable;
(void)bundlePath;
#if defined(__APPLE__)
// Started with an example on developer.apple.com about finding bundles
// and modified from that.
// Get a CFString of the app bundle path
// XXX - Is it safe to assume everything is in UTF8?
CFStringRef bundlePathCFS = CFStringCreateWithCString(
kCFAllocatorDefault, bundlePath.c_str(), kCFStringEncodingUTF8);
// Make a CFURLRef from the CFString representation of the
// bundles path.
CFURLRef bundleURL = CFURLCreateWithFileSystemPath(
kCFAllocatorDefault, bundlePathCFS, kCFURLPOSIXPathStyle, true);
// Make a bundle instance using the URLRef.
CFBundleRef appBundle = CFBundleCreate(kCFAllocatorDefault, bundleURL);
// returned executableURL is relative to <appbundle>/Contents/MacOS/
CFURLRef executableURL = CFBundleCopyExecutableURL(appBundle);
if (executableURL != NULL) {
const int MAX_OSX_PATH_SIZE = 1024;
char buffer[MAX_OSX_PATH_SIZE];
// Convert the CFString to a C string
CFStringGetCString(CFURLGetString(executableURL), buffer,
MAX_OSX_PATH_SIZE, kCFStringEncodingUTF8);
// And finally to a c++ string
executable = bundlePath + "/Contents/MacOS/" + std::string(buffer);
// Only release CFURLRef if it's not null
CFRelease(executableURL);
}
// Any CF objects returned from functions with "create" or
// "copy" in their names must be released by us!
CFRelease(bundlePathCFS);
CFRelease(bundleURL);
CFRelease(appBundle);
#endif
return executable;
}