1 files changed, 59 insertions, 0 deletions
diff --git a/internal/xmpmeta/file.cc b/internal/xmpmeta/file.cc
new file mode 100644
index 0000000..5559219
--- /dev/null
+++ b/internal/xmpmeta/file.cc
@@ -0,0 +1,59 @@
+#include "xmpmeta/file.h"
+
+#include <cstdio>
+#include "android-base/logging.h"
+
+namespace photos_editing_formats {
+
+using std::string;
+
+void WriteStringToFileOrDie(const string& data, const string& filename) {
+  FILE* file_descriptor = fopen(filename.c_str(), "wb");
+  if (!file_descriptor) {
+    LOG(FATAL) << "Couldn't write to file: " << filename;
+  }
+  fwrite(data.c_str(), 1, data.size(), file_descriptor);
+  fclose(file_descriptor);
+}
+
+void ReadFileToStringOrDie(const string& filename, string* data) {
+  FILE* file_descriptor = fopen(filename.c_str(), "r");
+
+  if (!file_descriptor) {
+    LOG(FATAL) << "Couldn't read file: " << filename;
+  }
+
+  // Resize the input buffer appropriately.
+  fseek(file_descriptor, 0L, SEEK_END);
+  int num_bytes = ftell(file_descriptor);
+  data->resize(num_bytes);
+
+  // Read the data.
+  fseek(file_descriptor, 0L, SEEK_SET);
+  int num_read =
+      fread(&((*data)[0]), sizeof((*data)[0]), num_bytes, file_descriptor);
+  if (num_read != num_bytes) {
+    LOG(FATAL) << "Couldn't read all of " << filename
+               << "expected bytes: " << num_bytes * sizeof((*data)[0])
+               << "actual bytes: " << num_read;
+  }
+  fclose(file_descriptor);
+}
+
+string JoinPath(const string& dirname, const string& basename) {
+#ifdef _WIN32
+  static const char separator = '\\';
+#else
+  static const char separator = '/';
+#endif  // _WIN32
+
+  if ((!basename.empty() && basename[0] == separator) || dirname.empty()) {
+    return basename;
+  } else if (dirname[dirname.size() - 1] == separator) {
+    return dirname + basename;
+  } else {
+    return dirname + string(&separator, 1) + basename;
+  }
+}
+
+}  // namespace photos_editing_formats