1 files changed, 108 insertions, 0 deletions
diff --git a/lib/nghttp3_rcbuf.c b/lib/nghttp3_rcbuf.c
new file mode 100644
index 0000000..9e9dab5
--- /dev/null
+++ b/lib/nghttp3_rcbuf.c
@@ -0,0 +1,108 @@
+/*
+ * nghttp3
+ *
+ * Copyright (c) 2019 nghttp3 contributors
+ * Copyright (c) 2016 nghttp2 contributors
+ *
+ * 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 "nghttp3_rcbuf.h"
+
+#include <assert.h>
+
+#include "nghttp3_mem.h"
+#include "nghttp3_str.h"
+
+int nghttp3_rcbuf_new(nghttp3_rcbuf **rcbuf_ptr, size_t size,
+                      const nghttp3_mem *mem) {
+  uint8_t *p;
+
+  p = nghttp3_mem_malloc(mem, sizeof(nghttp3_rcbuf) + size);
+  if (p == NULL) {
+    return NGHTTP3_ERR_NOMEM;
+  }
+
+  *rcbuf_ptr = (void *)p;
+
+  (*rcbuf_ptr)->mem = mem;
+  (*rcbuf_ptr)->base = p + sizeof(nghttp3_rcbuf);
+  (*rcbuf_ptr)->len = size;
+  (*rcbuf_ptr)->ref = 1;
+
+  return 0;
+}
+
+int nghttp3_rcbuf_new2(nghttp3_rcbuf **rcbuf_ptr, const uint8_t *src,
+                       size_t srclen, const nghttp3_mem *mem) {
+  int rv;
+  uint8_t *p;
+
+  rv = nghttp3_rcbuf_new(rcbuf_ptr, srclen + 1, mem);
+  if (rv != 0) {
+    return rv;
+  }
+
+  (*rcbuf_ptr)->len = srclen;
+  p = (*rcbuf_ptr)->base;
+
+  if (srclen) {
+    p = nghttp3_cpymem(p, src, srclen);
+  }
+
+  *p = '\0';
+
+  return 0;
+}
+
+/*
+ * Frees |rcbuf| itself, regardless of its reference cout.
+ */
+void nghttp3_rcbuf_del(nghttp3_rcbuf *rcbuf) {
+  nghttp3_mem_free(rcbuf->mem, rcbuf);
+}
+
+void nghttp3_rcbuf_incref(nghttp3_rcbuf *rcbuf) {
+  if (rcbuf->ref == -1) {
+    return;
+  }
+
+  ++rcbuf->ref;
+}
+
+void nghttp3_rcbuf_decref(nghttp3_rcbuf *rcbuf) {
+  if (rcbuf == NULL || rcbuf->ref == -1) {
+    return;
+  }
+
+  assert(rcbuf->ref > 0);
+
+  if (--rcbuf->ref == 0) {
+    nghttp3_rcbuf_del(rcbuf);
+  }
+}
+
+nghttp3_vec nghttp3_rcbuf_get_buf(const nghttp3_rcbuf *rcbuf) {
+  nghttp3_vec res = {rcbuf->base, rcbuf->len};
+  return res;
+}
+
+int nghttp3_rcbuf_is_static(const nghttp3_rcbuf *rcbuf) {
+  return rcbuf->ref == -1;
+}