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Add FileDescriptor::write.

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This commit is contained in:
Victor Zverovich 2014-05-03 12:06:28 -07:00
parent f3e123b304
commit 98b6e59272
2 changed files with 13 additions and 1 deletions
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8
test/gtest-extra.cc
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@ -80,6 +80,14 @@ std::streamsize FileDescriptor::read(void *buffer, std::size_t count) {
return result;
}
std::streamsize FileDescriptor::write(const void *buffer, std::size_t count) {
std::streamsize result = 0;
FMT_RETRY(result, ::write(fd_, buffer, count));
if (result == -1)
fmt::ThrowSystemError(errno, "cannot write to file");
return result;
}
FileDescriptor FileDescriptor::dup(int fd) {
int new_fd = 0;
FMT_RETRY(new_fd, ::FMT_POSIX(dup(fd)));

6
test/gtest-extra.h
View File

@ -194,10 +194,14 @@ class FileDescriptor {
// Returns the file descriptor.
int get() const FMT_NOEXCEPT(true) { return fd_; }
// Attempts to read count chars from the file associated with this file
// Attempts to read count bytes from the file associated with this file
// descriptor into the specified buffer.
std::streamsize read(void *buffer, std::size_t count);
// Attempts to write count bytes from the specified buffer to the file
// associated with this file descriptor.
std::streamsize write(const void *buffer, std::size_t count);
// Duplicates a file descriptor with the dup function and returns
// the duplicate. Throws fmt::SystemError on error.
static FileDescriptor dup(int fd);