Add new ConstList functions and use them.

Gets rid of lots of const warnings.

Signed-off-by: Thomas Klausner <wiz@NetBSD.org>

1 files changed, 93 insertions, 0 deletions

diff --git a/constlist.c b/constlist.c
new file mode 100644
index 0000000..b57fc97
--- /dev/null
+++ b/constlist.c
@@ -0,0 +1,93 @@
+/*
+  Copyright (c) 2002-2003 by Juliusz Chroboczek
+  Copyright (c) 2015 by Thomas Klausner
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+
+#include <stdlib.h>
+#include "constlist.h"
+
+ConstListPtr
+appendConstList(ConstListPtr first, ConstListPtr second)
+{
+    ConstListPtr current;
+
+    if(second == NULL)
+        return first;
+
+    if(first == NULL)
+        return second;
+
+    for(current = first; current->next; current = current->next)
+        ;
+
+    current->next = second;
+    return first;
+}
+
+ConstListPtr
+makeConstList(const char **a, int n, ConstListPtr old, int begin)
+{
+    ConstListPtr first, current, next;
+    int i;
+
+    if(n == 0)
+        return old;
+
+    first = malloc(sizeof(ConstListRec));
+    if(!first)
+        return NULL;
+
+    first->value = a[0];
+    first->next = NULL;
+
+    current = first;
+    for(i = 1; i < n; i++) {
+        next = malloc(sizeof(ConstListRec));
+        if(!next) {
+            destroyConstList(first);
+            return NULL;
+        }
+        next->value = a[i];
+        next->next = NULL;
+
+        current->next = next;
+        current = next;
+    }
+    if(begin) {
+        current->next = old;
+        return first;
+    } else {
+        return appendConstList(old, first);
+    }
+}
+
+void
+destroyConstList(ConstListPtr old)
+{
+    ConstListPtr next;
+    if(!old)
+        return;
+    while(old) {
+        next = old->next;
+        free(old);
+        old = next;
+    }
+}