1 files changed, 88 insertions, 0 deletions
diff --git a/idx.c b/idx.c
new file mode 100644
index 0000000..e62e2d9
--- /dev/null
+++ b/idx.c
@@ -0,0 +1,88 @@
+/* static char copyright[] = "@(#)Copyright (c) 1986, Greg McGary";
+   static char sccsid[] = "@(#)idx.c	1.2 86/10/17"; */
+
+#include "config.h"
+#include <stdio.h>
+#include <string.h>
+#include "misc.h"
+#include "filenames.h"
+#include "scanners.h"
+
+void idxtract (char *path);
+
+char const *program_name;
+
+static void
+usage (void)
+{
+  fprintf (stderr, "Usage: %s [-u] [+/-a<ccc>] [-c<ccc>] files\n", program_name);
+  exit (1);
+}
+
+int
+main (int argc, char **argv)
+{
+  char *arg;
+  int op;
+
+  program_name = basename ((argc--, *argv++));
+
+  init_scanners ();
+
+  while (argc)
+    {
+      arg = (argc--, *argv++);
+      switch (op = *arg++)
+	{
+	case '-':
+	case '+':
+	  break;
+	default:
+	  (argc++, --argv);
+	  goto argsdone;
+	}
+      switch (*arg++)
+	{
+	case 'S':
+	  set_scan_args (op, arg);
+	  break;
+	default:
+	  usage ();
+	}
+    }
+argsdone:
+
+  if (argc == 0)
+    usage ();
+
+  while (argc)
+    idxtract ((argc--, *argv++));
+
+  return 0;
+}
+
+void
+idxtract (char *file_name)
+{
+  char const *key;
+  FILE *source_FILE;
+  int flags;
+  char const *suffix;
+  char const *filter;
+  char const *lang_name;
+  char const *(*scanner) (FILE*, int*);
+
+  suffix = strrchr (file_name, '.');
+  lang_name = get_lang_name (suffix);
+  scanner = get_scanner (lang_name);
+  if (scanner == NULL)
+    return;
+  source_FILE = open_source_FILE (file_name, filter = get_filter (suffix));
+  if (source_FILE == NULL)
+    return;
+
+  while ((key = (*scanner) (source_FILE, &flags)) != NULL)
+    puts (key);
+
+  close_source_FILE (source_FILE, filter);
+}