image: Initial work on backend support

1 files changed, 33 insertions, 5 deletions

diff --git a/image/creator.cc b/image/creator.cc
index 3b145de..ce688fa 100644
--- a/image/creator.cc
+++ b/image/creator.cc
@@ -13,19 +13,26 @@
 #include <boost/program_options.hpp>
 #include <cstdlib>              /* EXIT_* */
 #include <string>
+#include "backends/backends.hh"
 #include "hscript/script.hh"
 #include "util/output.hh"
 
-bool pretty = true;
+bool pretty = true;     /*! Controls ASCII colour output */
+
 
 #define DESCR_TEXT "Usage: hscript-image [OPTION]... [INSTALLFILE]\n"\
                    "Write an operating system image configured per INSTALLFILE"
+/*! Text used at the top of usage output */
+
 
+/*! Entry-point for the image creation utility. */
 int main(int argc, char *argv[]) {
     using namespace boost::program_options;
     bool needs_help{}, disable_pretty{};
     int exit_code = EXIT_SUCCESS;
-    std::string if_path{"/etc/horizon/installfile"}, ir_dir{"/target"};
+    std::string if_path{"/etc/horizon/installfile"}, ir_dir{"/target"}, type_code{"tar"};
+    Horizon::ScriptOptions opts;
+    Horizon::Script *my_script;
 
     options_description ui{DESCR_TEXT};
     options_description general{"General options"};
@@ -71,17 +78,36 @@ int main(int argc, char *argv[]) {
     /* -n/--no-colour, or logging to file */
     if(disable_pretty || !isatty(1)) {
         pretty = false;
+    } else {
+        opts.set(Horizon::Pretty);
+    }
+
+    if(!vm["type"].empty()) {
+        type_code = vm["type"].as<std::string>();
+    }
+
+    if(type_code == "list") {
+        std::cout << "Type codes known by this build of Image Creation:"
+                  << std::endl << std::endl;
+        for(auto &backend : Horizon::Image::known_backends) {
+            std::cout << std::setw(10) << std::left << backend.type_code
+                      << backend.description << std::endl;
+        }
+        return EXIT_SUCCESS;
     }
 
     if(!vm["installfile"].empty()) {
         if_path = vm["installfile"].as<std::string>();
     }
 
-    Horizon::Script *my_script;
+    opts.set(Horizon::InstallEnvironment);
+    opts.set(Horizon::ImageOnly);
+
     if(if_path == "-") {
-        my_script = Horizon::Script::load(std::cin);
+        /* Unix-style stdin specification */
+        my_script = Horizon::Script::load(std::cin, opts);
     } else {
-        my_script = Horizon::Script::load(if_path);
+        my_script = Horizon::Script::load(if_path, opts);
     }
 
     /* if an error occurred during parsing, bail out now */
@@ -93,6 +119,8 @@ int main(int argc, char *argv[]) {
         my_script->setTargetDirectory(vm["ir-dir"].as<std::string>());
     }
 
+    my_script->execute();
+
     delete my_script;
     return exit_code;
 }