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#include <fcntl.h>
#include <stdio.h>
#include <string>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/message.h>
#include <google/protobuf/text_format.h>
using namespace std;
using namespace google::protobuf;
bool load_proto_from_file(const string &filename, Message *msg)
{
// Read and parse the protobuf from disk.
int fd = open(filename.c_str(), O_RDONLY);
if (fd == -1) {
perror(filename.c_str());
return false;
}
io::FileInputStream input(fd); // Takes ownership of fd.
if (!TextFormat::Parse(&input, msg)) {
input.Close();
return false;
}
input.Close();
return true;
}
bool save_proto_to_file(const Message &msg, const string &filename)
{
// Save to disk. We use the text format because it's friendlier
// for a user to look at and edit.
int fd = open(filename.c_str(), O_WRONLY | O_TRUNC | O_CREAT, 0666);
if (fd == -1) {
perror(filename.c_str());
return false;
}
io::FileOutputStream output(fd); // Takes ownership of fd.
if (!TextFormat::Print(msg, &output)) {
// TODO: Don't overwrite the old file (if any) on error.
output.Close();
return false;
}
output.Close();
return true;
}
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