1 files changed, 254 insertions, 0 deletions
diff --git a/Source/cmFindProgramCommand.cxx b/Source/cmFindProgramCommand.cxx
new file mode 100644
index 0000000..2059b3d
--- /dev/null
+++ b/Source/cmFindProgramCommand.cxx
@@ -0,0 +1,254 @@
+/* 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::string const& n : this->Names) {
+      if (this->CheckDirectoryForName(path, n)) {
+        return true;
+      }
+    }
+    return false;
+  }
+  bool CheckDirectoryForName(std::string const& path, std::string const& name)
+  {
+    for (std::string const& ext : this->Extensions) {
+      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 const result = FindProgram();
+  if (!result.empty()) {
+    // 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::string const& n : this->Names) {
+    helper.AddName(n);
+  }
+
+  // Check for the names themselves (e.g. absolute paths).
+  if (helper.CheckDirectory(std::string())) {
+    return helper.BestPath;
+  }
+
+  // Search every directory.
+  for (std::string const& sp : this->SearchPaths) {
+    if (helper.CheckDirectory(sp)) {
+      return helper.BestPath;
+    }
+  }
+  // Couldn't find the program.
+  return "";
+}
+
+std::string cmFindProgramCommand::FindNormalProgramDirsPerName()
+{
+  // Search the entire path for each name.
+  cmFindProgramHelper helper;
+  for (std::string const& n : this->Names) {
+    // Switch to searching for this name.
+    helper.SetName(n);
+
+    // Check for the name by itself (e.g. an absolute path).
+    if (helper.CheckDirectory(std::string())) {
+      return helper.BestPath;
+    }
+
+    // Search every directory.
+    for (std::string const& sp : this->SearchPaths) {
+      if (helper.CheckDirectory(sp)) {
+        return helper.BestPath;
+      }
+    }
+  }
+  // Couldn't find the program.
+  return "";
+}
+
+std::string cmFindProgramCommand::FindAppBundle()
+{
+  for (std::string const& name : this->Names) {
+
+    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
+  // bundle’s 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 != nullptr) {
+    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;
+}