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authorGravatar Nikias Bassen2022-02-04 04:20:37 +0100
committerGravatar Nikias Bassen2022-02-04 04:20:37 +0100
commitb5ccf24362f65cacc96f529c33bd2dcf2a50cf1b (patch)
tree61f7278a655f674635a544597f8ef3dabe0b252d /src/cbuf.c
parent3cb687baa8e69fbf57c5e05f4865184eb44abf67 (diff)
downloadlibimobiledevice-glue-b5ccf24362f65cacc96f529c33bd2dcf2a50cf1b.tar.gz
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Add a simple char buffer implementation
Diffstat (limited to 'src/cbuf.c')
-rw-r--r--src/cbuf.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/src/cbuf.c b/src/cbuf.c
new file mode 100644
index 0000000..c7c931f
--- /dev/null
+++ b/src/cbuf.c
@@ -0,0 +1,67 @@
+/*
+ * cbuf.c
+ * Simple char buffer implementation.
+ *
+ * Copyright (c) 2021 Nikias Bassen, All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "common.h"
+#include "libimobiledevice-glue/cbuf.h"
+
+LIBIMOBILEDEVICE_GLUE_API struct char_buf* char_buf_new()
+{
+ struct char_buf* cbuf = (struct char_buf*)malloc(sizeof(struct char_buf));
+ cbuf->capacity = 256;
+ cbuf->length = 0;
+ cbuf->data = (unsigned char*)malloc(cbuf->capacity);
+ return cbuf;
+}
+
+LIBIMOBILEDEVICE_GLUE_API void char_buf_free(struct char_buf* cbuf)
+{
+ if (cbuf) {
+ free(cbuf->data);
+ free(cbuf);
+ }
+}
+
+LIBIMOBILEDEVICE_GLUE_API void char_buf_append(struct char_buf* cbuf, unsigned int length, unsigned char* data)
+{
+ if (!cbuf || !cbuf->data) {
+ return;
+ }
+ if (cbuf->length + length > cbuf->capacity) {
+ unsigned int newcapacity = cbuf->capacity + ((length / 256) + 1) * 256;
+ unsigned char* newdata = realloc(cbuf->data, newcapacity);
+ if (!newdata) {
+ fprintf(stderr, "%s: ERROR: Failed to realloc\n", __func__);
+ return;
+ }
+ cbuf->data = newdata;
+ cbuf->capacity = newcapacity;
+ }
+ memcpy(cbuf->data + cbuf->length, data, length);
+ cbuf->length += length;
+}