database.cxx

移植到WLIT项目的redboot源代码

        CYG_REPORT_RETURN();
        return template_i->second.versions;
    }
    
    CYG_FAIL("Invalid template name passed to CdlPackagesDatabase::get_template_versions()");
    static std::vector<std::string> dummy;
    return dummy;
}

std::string
CdlPackagesDatabaseBody::get_template_filename(std::string template_name, std::string version_name) const
{
    CYG_REPORT_FUNCNAME("CdlPackagesDatabase::get_template_filename");
    CYG_REPORT_FUNCARG1XV(this);
    CYG_PRECONDITION_THISC();

    // Given the way templates are identified, the filename can be determined
    // easily by concatenating a few strings. The only complication is that
    // version_name may be an empty string, indicating that the most recent
    // version should be used.
    std::map<std::string,template_data>::const_iterator template_i = templates.find(template_name);
    if (template_i == templates.end()) {
        CYG_FAIL("Invalid template name passed to CdlPackagesDatabase::get_template_filename");
        CYG_REPORT_RETURN();
        return "";
    }
    if ("" == version_name) {
        CYG_ASSERTC(0 != template_i->second.versions.size());
        version_name = template_i->second.versions[0];
    } else {
        std::vector<std::string>::const_iterator vsn_i = std::find(template_i->second.versions.begin(),
                                                                   template_i->second.versions.end(), version_name);
        if (vsn_i == template_i->second.versions.end()) {
            CYG_FAIL("Invalid template version passed to CdlPackagesDatabase::get_template_filename");
            CYG_REPORT_RETURN();
            return "";
        }
    }

    std::string result = component_repository + "/templates/" + template_name + "/" + version_name + ".ect";
    CYG_REPORT_RETURN();
    return result;
}

// ----------------------------------------------------------------------------
// The descriptions now live in an eCos savefile, i.e. a Tcl script, so
// extracting them can be relatively expensive and needs to happen on
// a just-in-time basis.

const std::string
CdlPackagesDatabaseBody::get_template_description(std::string template_name, std::string version_name)
{
    CYG_REPORT_FUNCNAME("CdlPackagesDatabase::get_template_description");
    CYG_REPORT_FUNCARG1XV(this);
    CYG_PRECONDITION_THISC();

    // Is this a known template?
    std::map<std::string, struct template_data>::iterator template_i = templates.find(template_name);
    if (template_i == templates.end()) {
        CYG_FAIL("Invalid template name passed to CdlPackagesDatabase::get_template_description");
        CYG_REPORT_RETURN();
        return "";
    }

    // Is it a known version of the template?
    if ("" == version_name) {
        CYG_ASSERTC(0 != template_i->second.versions.size());
        version_name = template_i->second.versions[0];
    } else {
        if (std::find(template_i->second.versions.begin(), template_i->second.versions.end(), version_name) ==
            template_i->second.versions.end()) {

            CYG_FAIL("Invalid template version passed to CdlPackagesDatabase::get_template_description");
            CYG_REPORT_RETURN();
            return "";
        }
    }

    // We have a valid template and version. Has the version file in
    // question been read in yet?
    std::map<std::string, struct template_version_data>::iterator version_i;
    version_i = template_i->second.version_details.find(version_name);
    if (version_i != template_i->second.version_details.end()) {
        CYG_REPORT_RETURN();
        return version_i->second.description;
    }
    
    std::string filename = this->get_template_filename(template_name, version_name);
    if ("" == filename) {
        CYG_REPORT_RETURN();
        return "";
    } 
    extract_template_details(filename, template_i->second.version_details[version_name].description,
                             template_i->second.version_details[version_name].packages);
    CYG_REPORT_RETURN();
    return template_i->second.version_details[version_name].description;
}

// ----------------------------------------------------------------------------
// Similarly extracting package information needs to happen on a
// just-in-time basis.
const std::vector<std::string>&
CdlPackagesDatabaseBody::get_template_packages(std::string template_name, std::string version_name)
{
    CYG_REPORT_FUNCNAME("CdlPackagesDatabase::get_template_packages");
    CYG_REPORT_FUNCARG1XV(this);
    CYG_PRECONDITION_THISC();

    static std::vector<std::string> dummy;
    
    // Is this a known template?
    std::map<std::string, struct template_data>::iterator template_i = templates.find(template_name);
    if (template_i == templates.end()) {
        CYG_FAIL("Invalid template name passed to CdlPackagesDatabase::get_template_packages");
        CYG_REPORT_RETURN();
        return dummy;
    }

    // Is it a known version of the template?
    if ("" == version_name) {
        CYG_ASSERTC(0 != template_i->second.versions.size());
        version_name = template_i->second.versions[0];
    } else {
        if (std::find(template_i->second.versions.begin(), template_i->second.versions.end(), version_name) ==
            template_i->second.versions.end()) {

            CYG_FAIL("Invalid template version passed to CdlPackagesDatabase::get_packages");
            CYG_REPORT_RETURN();
            return dummy;
        }
    }

    // We have a valid template and version. Has the version file in
    // question been read in yet?
    std::map<std::string, struct template_version_data>::iterator version_i;
    version_i = template_i->second.version_details.find(version_name);
    if (version_i != template_i->second.version_details.end()) {
        CYG_REPORT_RETURN();
        return version_i->second.packages;
    }
    
    std::string filename = this->get_template_filename(template_name, version_name);
    if ("" == filename) {
        CYG_REPORT_RETURN();
        return dummy;
    } 
    extract_template_details(filename, template_i->second.version_details[version_name].description,
                             template_i->second.version_details[version_name].packages);
    CYG_REPORT_RETURN();
    return template_i->second.version_details[version_name].packages;
}

// ----------------------------------------------------------------------------
// Extracting the description and package information involves running
// the script through a Tcl interpreter extended with the appropriate
// commands. Most of the savefile information is irrelevant and is handled
// by extract_ignore(). The commands of interest are cdl_configuration and
// its sub-commands description and package.

static int
extract_ignore(CdlInterpreter interp, int argc, char** argv)
{
    return TCL_OK;
}

static int
extract_cdl_configuration(CdlInterpreter interp, int argc, char** argv)
{
    CYG_REPORT_FUNCNAMETYPE("extract_cdl_configuration", "result %d");
    CYG_REPORT_FUNCARG2XV(interp, argc);
    CYG_PRECONDITION_CLASSC(interp);

    int result = TCL_OK;
    
    // usage: cdl_configuration <name> <body>
    if (3 != argc) {
        interp->set_result("Invalid cdl_configuration command in template, expecting two arguments");
        result = TCL_ERROR;
    } else {
        // Ignore the first argument for now.
        std::string tmp;
        result = interp->eval(argv[2], tmp);
        
        // After processing the cdl_configuration command the description and
        // package information should be known. There is no point in processing
        // the rest of the file.
        if (TCL_OK == result) {
            interp->set_result("OK");
            result = TCL_ERROR;
        }
    }

    CYG_REPORT_RETVAL(result);
    return result;
}

static int
extract_cdl_description(CdlInterpreter interp, int argc, char** argv)
{
    CYG_REPORT_FUNCNAMETYPE("extract_cdl_description", "result %d");
    CYG_REPORT_FUNCARG2XV(interp, argc);
    CYG_PRECONDITION_CLASSC(interp);

    int result = TCL_OK;
    
    // usage: package <name>
    if (2 != argc) {
        interp->set_result("Invalid description command in template, expecting just one argument");
        result = TCL_ERROR;
    } else {
        ClientData client_data = interp->get_assoc_data(template_description_key);
        CYG_ASSERTC(0 != client_data);
        std::string* result_ptr = static_cast<std::string*>(client_data);
        *result_ptr = argv[1];
    }

    CYG_REPORT_RETVAL(result);
    return result;
}

static int
extract_cdl_package(CdlInterpreter interp, int argc, char** argv)
{
    CYG_REPORT_FUNCNAMETYPE("extract_cdl_package", "result %d");
    CYG_REPORT_FUNCARG2XV(interp, argc);
    CYG_PRECONDITION_CLASSC(interp);

    int result = TCL_OK;
    
    // usage: package <name> <version>
    if (2 > argc) {
        interp->set_result("Invalid package command in template, expecting two arguments");
        result = TCL_ERROR;
    } else {
        ClientData client_data = interp->get_assoc_data(template_packages_key);
        CYG_ASSERTC(0 != client_data);
        std::vector<std::string>* result_ptr = static_cast<std::vector<std::string>*>(client_data);
        result_ptr->push_back(argv[1]);
    }
    CYG_REPORT_RETVAL(result);
    return result;
}


void
CdlPackagesDatabaseBody::extract_template_details(std::string filename, std::string& description,
                                                      std::vector<std::string>& packages)
{
    CYG_REPORT_FUNCNAME("CdlPackagesDatabase::extract_template_description");

    CdlInterpreter interp = CdlInterpreterBody::make();
    interp->set_assoc_data(template_description_key, static_cast<ClientData>(&description));
    interp->set_assoc_data(template_packages_key,    static_cast<ClientData>(&packages));
    static CdlInterpreterCommandEntry extract_commands[] =
    {
        CdlInterpreterCommandEntry("cdl_savefile_version",  &extract_ignore                 ),
        CdlInterpreterCommandEntry("cdl_savefile_command",  &extract_ignore                 ),
        CdlInterpreterCommandEntry("cdl_configuration",     &extract_cdl_configuration      ),
        CdlInterpreterCommandEntry("hardware",              &extract_ignore                 ),
        CdlInterpreterCommandEntry("template",              &extract_ignore                 ),
        CdlInterpreterCommandEntry("description",           &extract_cdl_description        ),
        CdlInterpreterCommandEntry("package",               &extract_cdl_package            ),
        CdlInterpreterCommandEntry("unknown",               &extract_ignore                 ),
        CdlInterpreterCommandEntry("",                      0                               )
    };
    std::vector<CdlInterpreterCommandEntry> new_commands;
    for (int i = 0; 0 != extract_commands[i].command; i++) {
        new_commands.push_back(extract_commands[i]);
    }
    interp->push_commands(new_commands);

    std::string tmp;
    int result = interp->eval_file(filename, tmp);
    // Special escape mechanism, see extract_cdl_configuration() above
    if ((TCL_ERROR == result) && ("OK" == tmp)) {
        result = TCL_OK;
    }
#if 0    
    if (TCL_OK != result) {
        // No obvious way of recovering just yet
    }
#endif
    delete interp;
                           
    CYG_REPORT_RETURN();
}

//}}}
//{{{  CdlPackagesDatabase:: get_valid_cflags()                 

// ----------------------------------------------------------------------------

const std::vector<std::string>&
CdlPackagesDatabaseBody::get_valid_cflags()
{
    CYG_REPORT_FUNCNAME("CdlPackagesDatabase::get_valid_compiler_flags");

    static std::vector<std::string> result_vec;
    static const char* valid_flags[] = {
        "ARCHFLAGS",  "CARCHFLAGS",  "CXXARCHFLAGS",  "LDARCHFLAGS",
        "ERRFLAGS",   "CERRFLAGS",   "CXXERRFLAGS",   "LDERRFLAGS",
        "LANGFLAGS",  "CLANGFLAGS",  "CXXLANGFLAGS",  "LDLANGFLAGS",
        "DBGFLAGS",   "CDBGFLAGS",   "CXXDBGFLAGS",   "LDDBGFLAGS",
        "EXTRAFLAGS", "CEXTRAFLAGS", "CXXEXTRAFLAGS", "LDEXTRAFLAGS",
        0
    };

    if (0 == result_vec.size()) {
        for (int i = 0; 0 != valid_flags[i]; i++) {
            result_vec.push_back(valid_flags[i]);
        }
    }
    CYG_REPORT_RETURN();
    return result_vec;
}

//}}}