Export media_cas_packager_sdk

common/file_util.cc

@@ -0,0 +1,63 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2016 Google LLC.
+//
+// This software is licensed under the terms defined in the Widevine Master
+// License Agreement. For a copy of this agreement, please contact
+// widevine-licensing@google.com.
+////////////////////////////////////////////////////////////////////////////////
+
+#include "common/file_util.h"
+
+#include <stddef.h>
+#include <stdio.h>
+
+#include "glog/logging.h"
+
+namespace widevine {
+
+bool GetContents(const std::string& file_name, std::string* contents) {
+  if (file_name.empty()) {
+    LOG(WARNING) << "File name is empty.";
+    return false;
+  }
+  FILE* file = fopen(file_name.c_str(), "r");
+  if (!file) {
+    LOG(WARNING) << "Unable to open file " << file_name;
+    return false;
+  }
+  contents->clear();
+  const size_t kReadSize = 0x1000;
+  char buffer[kReadSize];
+  while (true) {
+    size_t size_read = fread(buffer, sizeof(char), kReadSize, file);
+    if (size_read == 0) break;
+    contents->append(buffer, size_read);
+  }
+  const bool eof = feof(file);
+  fclose(file);
+  if (!eof) {
+    LOG(WARNING) << "Failed to read all file contents.";
+    return false;
+  }
+  return true;;
+}
+
+bool SetContents(const std::string& file_name, const std::string& contents) {
+  if (file_name.empty()) {
+    LOG(WARNING) << "File name is empty.";
+    return false;
+  }
+  FILE* file = fopen(file_name.c_str(), "w");
+  if (!file) {
+    LOG(WARNING) << "Unable to open file " << file_name;
+    return false;
+  }
+  const size_t size_written =
+      fwrite(contents.data(), sizeof(char), contents.size(), file);
+  if (size_written != contents.size())
+    LOG(WARNING) << "Failed to write to " << file_name;
+  fclose(file);
+  return size_written == contents.size();
+}
+
+}  // namespace widevine