From c2b22e08bd48278f2cf125f054c9f6286e345ff0 Mon Sep 17 00:00:00 2001
From: Manoj Srivastava <srivasta@golden-gryphon.com>
Date: Wed, 3 Dec 2003 22:33:17 -0800
Subject: Imported Upstream version 2.5.31

---
 examples/manual/userinit.lex | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 examples/manual/userinit.lex

(limited to 'examples/manual/userinit.lex')

diff --git a/examples/manual/userinit.lex b/examples/manual/userinit.lex
new file mode 100644
index 0000000..9a56471
--- /dev/null
+++ b/examples/manual/userinit.lex
@@ -0,0 +1,30 @@
+%{
+#define YY_USER_INIT open_input_file()
+
+extern FILE *yyin;
+
+void open_input_file(void)
+{
+  char *file_name,buffer[1024];
+
+  yyin      = NULL; 
+
+  while(yyin == NULL){
+    printf("Input file: ");
+    file_name = fgets(buffer,1024,stdin);
+    if(file_name){
+      file_name[strlen(file_name)-1] = '\0';
+      yyin = fopen(file_name,"r");
+      if(yyin == NULL){
+        printf("Unable to open \"%s\"\n",file_name);
+      }
+    } else {
+      printf("stdin\n");
+      yyin = stdin;
+      break;
+    }
+  }
+}
+
+%}
+%%
-- 
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