/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#include "cmInstallFilesCommand.h"

#include "cmGeneratorExpression.h"
#include "cmGlobalGenerator.h"
#include "cmInstallFilesGenerator.h"
#include "cmInstallGenerator.h"
#include "cmMakefile.h"
#include "cmSystemTools.h"

class cmExecutionStatus;

// cmExecutableCommand
bool
cmInstallFilesCommand::InitialPass(std::vector<std::string> const& args,
                                   cmExecutionStatus&)
{
    if(args.size() < 2)
    {
        this->SetError("called with incorrect number of arguments");
        return false;
    }

    // Enable the install target.
    this->Makefile->GetGlobalGenerator()->EnableInstallTarget();

    this->Destination = args[0];

    if((args.size() > 1) && (args[1] == "FILES"))
    {
        this->IsFilesForm = true;
        for(std::vector<std::string>::const_iterator s = args.begin() + 2;
            s != args.end(); ++s)
        {
            // Find the source location for each file listed.
            this->Files.push_back(this->FindInstallSource(s->c_str()));
        }
        this->CreateInstallGenerator();
    } else
    {
        this->IsFilesForm = false;
        this->FinalArgs.insert(this->FinalArgs.end(), args.begin() + 1,
                               args.end());
    }

    this->Makefile->GetGlobalGenerator()->AddInstallComponent(
        this->Makefile->GetSafeDefinition(
            "CMAKE_INSTALL_DEFAULT_COMPONENT_NAME"));

    return true;
}

void
cmInstallFilesCommand::FinalPass()
{
    // No final pass for "FILES" form of arguments.
    if(this->IsFilesForm)
    {
        return;
    }

    std::string        testf;
    std::string const& ext = this->FinalArgs[0];

    // two different options
    if(this->FinalArgs.size() > 1)
    {
        // now put the files into the list
        std::vector<std::string>::iterator s = this->FinalArgs.begin();
        ++s;
        // for each argument, get the files
        for(; s != this->FinalArgs.end(); ++s)
        {
            // replace any variables
            std::string const& temps = *s;
            if(!cmSystemTools::GetFilenamePath(temps).empty())
            {
                testf = cmSystemTools::GetFilenamePath(temps) + "/" +
                        cmSystemTools::GetFilenameWithoutLastExtension(temps) +
                        ext;
            } else
            {
                testf =
                    cmSystemTools::GetFilenameWithoutLastExtension(temps) + ext;
            }

            // add to the result
            this->Files.push_back(this->FindInstallSource(testf.c_str()));
        }
    } else  // reg exp list
    {
        std::vector<std::string> files;
        std::string const&       regex = this->FinalArgs[0];
        cmSystemTools::Glob(this->Makefile->GetCurrentSourceDirectory(), regex,
                            files);

        std::vector<std::string>::iterator s = files.begin();
        // for each argument, get the files
        for(; s != files.end(); ++s)
        {
            this->Files.push_back(this->FindInstallSource(s->c_str()));
        }
    }

    this->CreateInstallGenerator();
}

void
cmInstallFilesCommand::CreateInstallGenerator() const
{
    // Construct the destination.  This command always installs under
    // the prefix.  We skip the leading slash given by the user.
    std::string destination = this->Destination.substr(1);
    cmSystemTools::ConvertToUnixSlashes(destination);
    if(destination.empty())
    {
        destination = ".";
    }

    // Use a file install generator.
    const char* no_permissions      = "";
    const char* no_rename           = "";
    bool        no_exclude_from_all = false;
    std::string no_component        = this->Makefile->GetSafeDefinition(
        "CMAKE_INSTALL_DEFAULT_COMPONENT_NAME");
    std::vector<std::string>         no_configurations;
    cmInstallGenerator::MessageLevel message =
        cmInstallGenerator::SelectMessageLevel(this->Makefile);
    this->Makefile->AddInstallGenerator(new cmInstallFilesGenerator(
        this->Files, destination.c_str(), false, no_permissions,
        no_configurations, no_component.c_str(), message, no_exclude_from_all,
        no_rename));
}

/**
 * Find a file in the build or source tree for installation given a
 * relative path from the CMakeLists.txt file.  This will favor files
 * present in the build tree.  If a full path is given, it is just
 * returned.
 */
std::string
cmInstallFilesCommand::FindInstallSource(const char* name) const
{
    if(cmSystemTools::FileIsFullPath(name) ||
       cmGeneratorExpression::Find(name) == 0)
    {
        // This is a full path.
        return name;
    }

    // This is a relative path.
    std::string tb = this->Makefile->GetCurrentBinaryDirectory();
    tb += "/";
    tb += name;
    std::string ts = this->Makefile->GetCurrentSourceDirectory();
    ts += "/";
    ts += name;

    if(cmSystemTools::FileExists(tb))
    {
        // The file exists in the binary tree.  Use it.
        return tb;
    }
    if(cmSystemTools::FileExists(ts))
    {
        // The file exists in the source tree.  Use it.
        return ts;
    }
    // The file doesn't exist.  Assume it will be present in the
    // binary tree when the install occurs.
    return tb;
}
