1 files changed, 112 insertions, 0 deletions
diff --git a/mrbgems/gem_helper.c b/mrbgems/gem_helper.c
new file mode 100644
index 000000000..6b32a916e
--- /dev/null
+++ b/mrbgems/gem_helper.c
@@ -0,0 +1,112 @@
+#include <string.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <sys/stat.h>
+     
+static int
+one (const struct dirent *unused)
+{
+  return 1;
+}
+
+void
+dir_list (char before[1024], char after[1024])
+{
+  struct dirent **eps;
+  int n;
+  char gemname[1024] = "";
+  char gemname_path[4096] = "";
+  char complete_line[4096] = "";
+  struct stat attribut;
+
+  n = scandir("./g", &eps, one, alphasort);
+  if (n >= 0) {
+    int cnt;
+    for (cnt = 0; cnt < n; ++cnt) {
+      strcpy(gemname, eps[cnt]->d_name);
+      strcpy(gemname_path, "./g/");
+      strcat(gemname_path, gemname);
+
+      if (strcmp(gemname, ".") == 0)
+        continue;
+      if (strcmp(gemname, "..") == 0)
+        continue;
+
+      stat(gemname_path, &attribut);
+      if (S_ISDIR(attribut.st_mode) == 0)
+        continue;
+
+      strcat(complete_line, before);
+      strcat(complete_line, gemname);
+      strcat(complete_line, after);
+      strcat(complete_line, "\n");
+    }
+    puts(complete_line);
+  }
+  else
+    perror ("Couldn't open the directory");
+}
+
+void
+make_gem_makefile()
+{
+  puts("ifeq ($(OS),Windows_NT)");
+  puts("MAKE_FLAGS = --no-print-directory CC=$(CC) LL=$(LL) ALL_CFLAGS='$(ALL_CFLAGS)'");
+  puts("else");
+  puts("MAKE_FLAGS = --no-print-directory CC='$(CC)' LL='$(LL)' ALL_CFLAGS='$(ALL_CFLAGS)'");
+  puts("endif");
+  puts("");
+
+  puts(".PHONY : all");
+  puts("all :");
+  dir_list("\t@$(MAKE) -C ", " $(MAKE_FLAGS)");
+
+  puts(".PHONY : clean");
+  puts("clean :");
+  dir_list("\t@$(MAKE) clean -C ", " $(MAKE_FLAGS)");
+}
+
+void
+make_init_gems()
+{
+  puts("/*");
+  puts(" * This file contains a list of all");
+  puts(" * initializing methods which are");
+  puts(" * necessary to bootstrap all gems.");
+  puts(" *");
+  puts(" * IMPORTANT:");
+  puts(" *   This file was generated!");
+  puts(" *   All manual changes will get lost.");
+  puts(" */");
+
+  puts("");
+  puts("#include \"mruby.h\"");
+  puts("");
+
+  dir_list("void mrb_", "_gem_init(mrb_state*);");
+
+  puts("void");
+  puts("mrb_init_mrbgems(mrb_state *mrb)");
+  puts("{");
+  dir_list("  mrb_", "_gem_init(mrb);");
+  puts("}");
+}
+
+int
+main (int argc, char *argv[])
+{
+  if (argc == 2) {
+    if (strcmp(argv[1], "makefile") == 0)
+      make_gem_makefile();
+    else if (strcmp(argv[1], "init_gems") == 0)
+      make_init_gems();
+    else
+      return 1;
+  }
+  else {
+    puts("Argument missing! Options: 'makefile'");
+    return 1;
+  }
+
+  return 0;
+}