Added input editing and buffer

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input_buffer.c

@@ -0,0 +1,54 @@
+/* 
+ * input_buffer.c
+ *
+ * Copyright (C) 2012 James Booth <boothj5@gmail.com>
+ * 
+ * This file is part of Profanity.
+ *
+ * Profanity is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Profanity is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Profanity.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <string.h>
+
+#define BUFMAX 100
+
+static char *_inp_buf[BUFMAX];
+static int _buf_size;
+static int _buf_prev;
+
+void inpbuf_init(void)
+{
+    _buf_size = 0;
+    _buf_prev = -1;
+}
+
+void inpbuf_append(char *inp)
+{
+    if (_buf_size < BUFMAX) {
+        _inp_buf[_buf_size] = (char*) malloc(strlen(inp) * sizeof(char));
+        strcpy(_inp_buf[_buf_size], inp);
+        _buf_prev = _buf_size;
+        _buf_size++;
+    }
+}
+
+char *inp_buf_get_previous(void)
+{
+    if (_buf_size == 0 || _buf_prev == -1)
+        return NULL;
+    return _inp_buf[_buf_prev--];
+}
+
+