nerdcruft/libcruft-util
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io: add slurp for uint32_t

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This commit is contained in:
Danny Robson 2018-05-03 21:21:45 +10:00
parent 497d3ca970
commit c51673e421
1 changed files with 3 additions and 4 deletions
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7
io.cpp
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@ -38,14 +38,12 @@ template <typename T>
std::vector<T> std::vector<T>
util::slurp (const std::experimental::filesystem::path &path) util::slurp (const std::experimental::filesystem::path &path)
{ {
static_assert (
sizeof (T) == 1,
"slurp is designed for grabbing bytes, not complex structures"
);
posix::fd out (path, O_RDONLY | O_BINARY); posix::fd out (path, O_RDONLY | O_BINARY);
// Calculate the total file size // Calculate the total file size
off_t size = posix::error::try_value (lseek (out, 0, SEEK_END)); off_t size = posix::error::try_value (lseek (out, 0, SEEK_END));
if (size % sizeof (T))
throw std::runtime_error ("filesize not correctly rounded");
posix::error::try_value (lseek (out, 0, SEEK_SET)); posix::error::try_value (lseek (out, 0, SEEK_SET));
@ -75,6 +73,7 @@ util::slurp (const std::experimental::filesystem::path &path)
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
template std::vector<char> util::slurp (const std::experimental::filesystem::path&); template std::vector<char> util::slurp (const std::experimental::filesystem::path&);
template std::vector<std::byte> util::slurp (const std::experimental::filesystem::path&); template std::vector<std::byte> util::slurp (const std::experimental::filesystem::path&);
template std::vector<uint32_t> util::slurp (const std::experimental::filesystem::path&);
/////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////