From 1fd1472ddeb4a9e248bd20a378091ffe6f1132b6 Mon Sep 17 00:00:00 2001
From: Roy Marples <roy@marples.name>
Date: Sun, 16 Mar 2008 17:01:35 +0000
Subject: Add new stringlist files.

---
 src/librc/librc-stringlist.c | 128 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100644 src/librc/librc-stringlist.c

(limited to 'src/librc/librc-stringlist.c')

diff --git a/src/librc/librc-stringlist.c b/src/librc/librc-stringlist.c
new file mode 100644
index 0000000..93297ce
--- /dev/null
+++ b/src/librc/librc-stringlist.c
@@ -0,0 +1,128 @@
+/*
+   librc-strlist.h
+   String list functions to make using queue(3) a little easier.
+   */
+
+/*
+ * Copyright 2007-2008 Roy Marples
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "librc.h"
+
+RC_STRINGLIST *rc_stringlist_new(void)
+{
+	RC_STRINGLIST *l = xmalloc(sizeof(*l));
+	TAILQ_INIT(l);
+	return l;
+}
+
+RC_STRING *rc_stringlist_add (RC_STRINGLIST *list, const char *value)
+{
+	RC_STRING *s = xmalloc(sizeof(*s));
+
+	s->value = xstrdup(value);
+	TAILQ_INSERT_TAIL(list, s, entries);
+	return s;
+}
+librc_hidden_def(rc_stringlist_add)
+
+RC_STRING *rc_stringlist_addu (RC_STRINGLIST *list, const char *value)
+{
+	RC_STRING *s;
+
+	TAILQ_FOREACH(s, list, entries)
+		if (strcmp(s->value, value) == 0) {
+			errno = EEXIST;
+			return NULL;
+		}
+
+	return rc_stringlist_add(list, value);
+}
+librc_hidden_def(rc_stringlist_addu)
+
+bool rc_stringlist_delete (RC_STRINGLIST *list, const char *value)
+{
+	RC_STRING *s;
+
+	TAILQ_FOREACH(s, list, entries)
+		if (strcmp(s->value, value) == 0) {
+			TAILQ_REMOVE(list, s, entries);
+			free (s->value);
+			free (s);
+			return true;
+		}
+
+	errno = EEXIST;
+	return false;
+}
+librc_hidden_def(rc_stringlist_delete)
+
+void rc_stringlist_sort(RC_STRINGLIST **list)
+{
+	RC_STRINGLIST *l = *list;
+	RC_STRINGLIST *new = rc_stringlist_new();
+	RC_STRING *s;
+	RC_STRING *sn;
+	RC_STRING *n;
+	RC_STRING *last;
+
+	TAILQ_FOREACH_SAFE(s, l, entries, sn) {
+		TAILQ_REMOVE(l, s, entries);
+		last = NULL;
+		TAILQ_FOREACH (n, new, entries) {
+			if (strcmp (s->value, n->value) < 0)
+				break;
+			last = n;
+		}
+		if (last)
+			TAILQ_INSERT_AFTER(new, last, s, entries);
+		else
+			TAILQ_INSERT_HEAD(new, s, entries);
+	}
+
+	/* Now we've sorted the list, copy across the new head */
+	free(l);
+	*list = new;
+}
+librc_hidden_def(rc_stringlist_sort)
+
+void rc_stringlist_free(RC_STRINGLIST *list)
+{
+	RC_STRING *s1; 
+	RC_STRING *s2;
+
+	if (!list)
+		return;
+
+	s1 = TAILQ_FIRST(list);
+	while (s1) {
+		s2 = TAILQ_NEXT(s1, entries);
+		free(s1->value);
+		free(s1);
+		s1 = s2;
+	}
+	free(list);
+}
+librc_hidden_def(rc_stringlist_free)
-- 
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