import 12.2.13 release

[ceph.git] / ceph / src / civetweb / src / third_party / duktape-1.8.0 / src-separate / duk_util_bitencoder.c

diff --git a/ceph/src/civetweb/src/third_party/duktape-1.8.0/src-separate/duk_util_bitencoder.c b/ceph/src/civetweb/src/third_party/duktape-1.8.0/src-separate/duk_util_bitencoder.c
new file mode 100644 (file)
index 0000000..404c7f0
--- /dev/null
+++ b/ceph/src/civetweb/src/third_party/duktape-1.8.0/src-separate/duk_util_bitencoder.c
@@ -0,0 +1,43 @@
+/*
+ *  Bitstream encoder.
+ */
+
+#include "duk_internal.h"
+
+DUK_INTERNAL void duk_be_encode(duk_bitencoder_ctx *ctx, duk_uint32_t data, duk_small_int_t bits) {
+       duk_uint8_t tmp;
+
+       DUK_ASSERT(ctx != NULL);
+       DUK_ASSERT(ctx->currbits < 8);
+
+       /* This limitation would be fixable but adds unnecessary complexity. */
+       DUK_ASSERT(bits >= 1 && bits <= 24);
+
+       ctx->currval = (ctx->currval << bits) | data;
+       ctx->currbits += bits;
+
+       while (ctx->currbits >= 8) {
+               if (ctx->offset < ctx->length) {
+                       tmp = (duk_uint8_t) ((ctx->currval >> (ctx->currbits - 8)) & 0xff);
+                       ctx->data[ctx->offset++] = tmp;
+               } else {
+                       /* If buffer has been exhausted, truncate bitstream */
+                       ctx->truncated = 1;
+               }
+
+               ctx->currbits -= 8;
+       }
+}
+
+DUK_INTERNAL void duk_be_finish(duk_bitencoder_ctx *ctx) {
+       duk_small_int_t npad;
+
+       DUK_ASSERT(ctx != NULL);
+       DUK_ASSERT(ctx->currbits < 8);
+
+       npad = (duk_small_int_t) (8 - ctx->currbits);
+       if (npad > 0) {
+               duk_be_encode(ctx, 0, npad);
+       }
+       DUK_ASSERT(ctx->currbits == 0);
+}