From 97c8e41bd5fba61fe60c7e8fc20484a58a371583 Mon Sep 17 00:00:00 2001
From: Pavel Charvat <pchar@githany.netcentrum.cz>
Date: Tue, 28 May 2013 12:08:06 +0200
Subject: [PATCH] LibUCW: Implemented OptionalInclude to configuration files.

---
 ucw/conf-input.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ucw/conf-input.c b/ucw/conf-input.c
index ddfef9bd..b264a24b 100644
--- a/ucw/conf-input.c
+++ b/ucw/conf-input.c
@@ -20,6 +20,7 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <errno.h>
 #include <fcntl.h>
 
 /* Text file parser */
@@ -239,7 +240,8 @@ parse_fastbuf(struct cf_context *cc, const char *name_fb, struct fastbuf *fb, un
     char *pars[p->words-1];
     for (uns i=1; i<p->words; i++)
       pars[i-1] = p->copy_buf.ptr + p->word_buf.ptr[i];
-    if (!strcasecmp(name, "include"))
+    int optional_include = !strcasecmp(name, "optionalinclude");
+    if (optional_include || !strcasecmp(name, "include"))
     {
       if (p->words != 2)
 	err = "Expecting one filename";
@@ -251,6 +253,8 @@ parse_fastbuf(struct cf_context *cc, const char *name_fb, struct fastbuf *fb, un
 	goto error;
       struct fastbuf *new_fb = bopen_try(pars[0], O_RDONLY, 1<<14);
       if (!new_fb) {
+	if (optional_include && errno == ENOENT)
+	  continue;
 	err = cf_printf("Cannot open file %s: %m", pars[0]);
 	goto error;
       }
-- 
2.39.2