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copy file into .tmp and then rename if correct

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This commit is contained in:
David Kocik 2019-12-19 15:36:00 +01:00
parent dafd768b34
commit 31b134bfcc
2 changed files with 34 additions and 18 deletions
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1
src/libslic3r/Utils.hpp
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@ -65,6 +65,7 @@ extern std::string normalize_utf8_nfc(const char *src);
extern std::error_code rename_file(const std::string &from, const std::string &to);
// Copy a file, adjust the access attributes, so that the target is writable.
int copy_file_inner(const std::string &from, const std::string &to);
extern int copy_file(const std::string &from, const std::string &to, const bool with_check = false);
// Compares two files, returns 0 if identical.

19
src/libslic3r/utils.cpp
View File

@ -417,7 +417,7 @@ std::error_code rename_file(const std::string &from, const std::string &to)
#endif
}
int copy_file(const std::string &from, const std::string &to, const bool with_check)
int copy_file_inner(const std::string& from, const std::string& to)
{
const boost::filesystem::path source(from);
const boost::filesystem::path target(to);
@ -436,7 +436,22 @@ int copy_file(const std::string &from, const std::string &to, const bool with_ch
return -1;
}
boost::filesystem::permissions(target, perms, ec);
return (with_check ? check_copy(from, to) : 0);
return 0;
}
int copy_file(const std::string &from, const std::string &to, const bool with_check)
{
std::string to_temp = to + ".tmp";
int ret_val = copy_file_inner(from,to_temp);
if(ret_val == 0 && with_check)
{
ret_val = check_copy(from, to_temp);
if (ret_val == 0)
{
rename_file(to_temp, to);
}
}
return ret_val;
}
int check_copy(const std::string &origin, const std::string &copy)