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Code Issues Releases Wiki Activity

ircd::fs: Improve basic file read/write/append into buffers.

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This commit is contained in:
Jason Volk 2017-10-02 02:58:53 -07:00
parent 0eb10c0495
commit 4954c90e27
2 changed files with 44 additions and 0 deletions
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4
include/ircd/fs.h
View file

@ -95,4 +95,8 @@ namespace ircd::fs
bool mkdir(const std::string &path);
std::string read(const std::string &name);
string_view read(const std::string &name, const mutable_raw_buffer &buf);
bool write(const std::string &name, const const_raw_buffer &buf);
bool append(const std::string &name, const const_raw_buffer &buf);
bool overwrite(const std::string &name, const const_raw_buffer &buf);
}

40
ircd/fs.cc
View file

@ -60,6 +60,34 @@ std::array<ent, num_of<index>()> paths
} // namespace fs
} // namespace ircd
bool
ircd::fs::write(const std::string &path,
const const_raw_buffer &buf)
{
if(fs::exists(path))
return false;
return overwrite(path, buf);
}
bool
ircd::fs::overwrite(const std::string &path,
const const_raw_buffer &buf)
{
std::ofstream file{path, std::ios::trunc};
file.write(reinterpret_cast<const char *>(data(buf)), size(buf));
return true;
}
bool
ircd::fs::append(const std::string &path,
const const_raw_buffer &buf)
{
std::ofstream file{path, std::ios::app};
file.write(reinterpret_cast<const char *>(data(buf)), size(buf));
return true;
}
std::string
ircd::fs::read(const std::string &path)
{
@ -70,6 +98,18 @@ ircd::fs::read(const std::string &path)
return std::string{b, e};
}
ircd::string_view
ircd::fs::read(const std::string &path,
const mutable_raw_buffer &buf)
{
std::ifstream file{path};
if(!file.good())
return {};
file.read(reinterpret_cast<char *>(data(buf)), size(buf));
return { reinterpret_cast<const char *>(data(buf)), file.gcount() };
}
void
ircd::fs::chdir(const std::string &path)
try