1 files changed, 160 insertions, 0 deletions
diff --git a/cpukit/libtrace/record/record-dump-zbase64.c b/cpukit/libtrace/record/record-dump-zbase64.c
new file mode 100644
index 0000000000..08b4d92c53
--- /dev/null
+++ b/cpukit/libtrace/record/record-dump-zbase64.c
@@ -0,0 +1,160 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/*
+ * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/recorddump.h>
+#include <rtems/score/io.h>
+
+#include <limits.h>
+#include <string.h>
+
+static void *dump_zalloc( void *opaque, unsigned items, unsigned size )
+{
+  rtems_record_dump_base64_zlib_context *ctx;
+  char                                  *mem_begin;
+  size_t                                 mem_available;
+
+  ctx = opaque;
+  size *= items;
+  mem_available = ctx->mem_available;
+
+  if ( mem_available < size ) {
+    return NULL;
+  }
+
+  mem_begin = ctx->mem_begin;
+  ctx->mem_begin = mem_begin + size;
+  ctx->mem_available = mem_available - size;
+  return mem_begin;
+}
+
+static void dump_zfree( void *opaque, void *ptr )
+{
+  (void) opaque;
+  (void) ptr;
+}
+
+static void put_char( int c, void *arg )
+{
+  rtems_record_dump_base64_zlib_context *ctx;
+
+  ctx = arg;
+
+  ( *ctx->put_char )( c, ctx->arg );
+  ++ctx->out;
+
+  if ( ctx->out >= 76 ) {
+    ctx->out = 0;
+    ( *ctx->put_char )( '\n', ctx->arg );
+  }
+}
+
+static void chunk( void *arg, const void *data, size_t length )
+{
+  rtems_record_dump_base64_zlib_context *ctx;
+
+  ctx = arg;
+  ctx->stream.next_in = RTEMS_DECONST( void *, data );
+  ctx->stream.avail_in = length;
+
+  while ( ctx->stream.avail_in > 0 ) {
+    int err;
+
+    err = deflate( &ctx->stream, Z_NO_FLUSH );
+    if ( err != Z_OK ) {
+      return;
+    }
+
+    if ( ctx->stream.avail_out == 0 ) {
+      ctx->stream.next_out = &ctx->buf[ 0 ];
+      ctx->stream.avail_out = sizeof( ctx->buf );
+
+      _IO_Base64( put_char, ctx, ctx->buf, sizeof( ctx->buf ), NULL, INT_MAX );
+    }
+  }
+}
+
+static void flush( rtems_record_dump_base64_zlib_context *ctx )
+{
+  while ( true ) {
+    int err;
+
+    err = deflate( &ctx->stream, Z_FINISH );
+    if ( err != Z_OK ) {
+      break;
+    }
+
+    if ( ctx->stream.avail_out == 0 ) {
+      ctx->stream.next_out = &ctx->buf[ 0 ];
+      ctx->stream.avail_out = sizeof( ctx->buf );
+
+      _IO_Base64( put_char, ctx, ctx->buf, sizeof( ctx->buf ), NULL, INT_MAX );
+    }
+  }
+
+  _IO_Base64(
+    put_char,
+    ctx,
+    ctx->buf,
+    sizeof( ctx->buf ) - ctx->stream.avail_out,
+    NULL,
+    INT_MAX
+  );
+}
+
+void rtems_record_dump_zlib_base64(
+  rtems_record_dump_base64_zlib_context *ctx,
+  void                                ( *put_char )( int, void * ),
+  void                                  *arg
+)
+{
+  int err;
+
+  ctx->put_char = put_char;
+  ctx->arg = arg;
+  ctx->out = 0;
+  ctx->stream.zalloc = dump_zalloc;
+  ctx->stream.zfree = dump_zfree;
+  ctx->stream.opaque = ctx;
+  ctx->mem_begin = &ctx->mem[ 0 ];
+  ctx->mem_available = sizeof( ctx->mem );
+
+  err = deflateInit( &ctx->stream, Z_BEST_COMPRESSION );
+  if (err != Z_OK) {
+    return;
+  }
+
+  ctx->stream.next_out = &ctx->buf[ 0 ];
+  ctx->stream.avail_out = sizeof( ctx->buf );
+
+  rtems_record_dump( chunk, ctx );
+  flush( ctx );
+  deflateEnd( &ctx->stream );
+}