Use tesseract::Serialize, tesseract::DeSerialize

Signed-off-by: Stefan Weil <sw@weilnetz.de>

Author: stweil

src/api/pdfrenderer.cpp

@@ -669,7 +669,7 @@ bool TessPDFRenderer::BeginDocumentHandler() {
   }
   fseek(fp, 0, SEEK_SET);
   const std::unique_ptr<char[]> buffer(new char[size]);
-  if (fread(buffer.get(), 1, size, fp) != static_cast<size_t>(size)) {
+  if (!tesseract::DeSerialize(fp, buffer.get(), size)) {
     fclose(fp);
     return false;
   }

src/api/renderer.cpp

@@ -104,8 +104,7 @@ void TessResultRenderer::AppendString(const char* s) {
 }
 
 void TessResultRenderer::AppendData(const char* s, int len) {
-  int n = fwrite(s, 1, len, fout_);
-  if (n != len) happy_ = false;
+  if (!tesseract::Serialize(fout_, s, len)) happy_ = false;
 }
 
 bool TessResultRenderer::BeginDocumentHandler() {

src/classify/blobclass.cpp

@@ -104,9 +104,8 @@ bool Classify::WriteTRFile(const STRING& filename) {
   STRING tr_filename = filename + ".tr";
   FILE* fp = fopen(tr_filename.string(), "wb");
   if (fp) {
-    const size_t len = tr_file_data_.length();
     result =
-        fwrite(&tr_file_data_[0], sizeof(tr_file_data_[0]), len, fp) == len;
+      tesseract::Serialize(fp, &tr_file_data_[0], tr_file_data_.length());
     fclose(fp);
   }
   tr_file_data_.truncate_at(0);