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tools/stat: break main into functions

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This commit is contained in:
Danny Robson 2019-04-25 09:22:43 +10:00
parent 2d7eb25167
commit 4d538190f2
2 changed files with 64 additions and 53 deletions
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2
cruft/util

@ -1 +1 @@
Subproject commit 174bd62a293d3e15dc4fdc3112dea21443fc1d90
Subproject commit 1ca47626aa5c033d9a40d7040657ba4ecc045155

115
tools/stat.cpp
View File

@ -12,12 +12,7 @@
#include <cstdlib>
constexpr unsigned type_index (mode_t val)
{
return (val & S_IFMT) >> cruft::ctz (unsigned {S_IFMT});
}
///////////////////////////////////////////////////////////////////////////////
struct type_printer {
type_printer (struct stat const &_data)
: data (_data)
@ -26,6 +21,8 @@ struct type_printer {
struct stat const &data;
};
//-----------------------------------------------------------------------------
std::ostream& operator<< (std::ostream &os, type_printer const &val)
{
os << "[ ";
@ -50,6 +47,7 @@ std::ostream& operator<< (std::ostream &os, type_printer const &val)
}
///////////////////////////////////////////////////////////////////////////////
struct mode_printer {
mode_printer (struct stat const &_data)
: data (_data)
@ -59,6 +57,7 @@ struct mode_printer {
};
//-----------------------------------------------------------------------------
std::ostream& operator<< (std::ostream &os, mode_printer const &val)
{
return S_ISREG (val.data.st_mode) ? os << "REGULAR"
@ -72,6 +71,7 @@ std::ostream& operator<< (std::ostream &os, mode_printer const &val)
}
//-----------------------------------------------------------------------------
std::ostream& operator<< (std::ostream &os, struct stat const &val)
{
return os << "{ dev: " << val.st_dev
@ -86,6 +86,61 @@ std::ostream& operator<< (std::ostream &os, struct stat const &val)
}
///////////////////////////////////////////////////////////////////////////////
static void do_stat (char const *path)
{
struct stat buffer;
cruft::posix::error::try_call (stat, path, &buffer);
std::cout << buffer;
}
//-----------------------------------------------------------------------------
void do_xattr (char const *path)
{
std::cout << ", xattr: ";
{
std::cout << "{ ";
std::string attr_list (1024, '\0');
{
auto res = listxattr (path, attr_list.data (), attr_list.size ());
if (res < 0)
cruft::posix::error::throw_code ();
attr_list.resize (res);
}
std::string keybuffer (64, '\0');
std::string val (128, '\0');
cruft::view<char const*> attr_view { attr_list.data (), attr_list.size () };
for (auto const &key: cruft::tokeniser (attr_view, '\0')) {
keybuffer.resize (0);
std::copy (std::begin (key), std::end (key), std::back_inserter (keybuffer));
while (true) {
auto const res = getxattr (path, keybuffer.c_str (), val.data (), val.size ());
if (res == E2BIG) {
val.resize (val.size () * 2);
continue;
}
if (res < 0)
cruft::posix::error::throw_code ();
val.resize (res);
break;
}
std::cout << keybuffer << ": " << val << ", ";
}
std::cout << "}";
}
}
///////////////////////////////////////////////////////////////////////////////
int main (int argc, char **argv)
{
if (argc < 2) {
@ -97,52 +152,8 @@ int main (int argc, char **argv)
std::cout << "{ stat: ";
char const *path = argv[i];
{
struct stat buffer;
cruft::posix::error::try_call (stat, path, &buffer);
std::cout << buffer;
}
std::cout << ", xattr: ";
{
std::cout << "{ ";
std::string attr_list (1024, '\0');
{
auto res = listxattr (path, attr_list.data (), attr_list.size ());
if (res < 0)
cruft::posix::error::throw_code ();
attr_list.resize (res);
}
std::string keybuffer (64, '\0');
std::string val (128, '\0');
cruft::view<char const*> attr_view { attr_list.data (), attr_list.size () };
for (auto const &key: cruft::tokeniser (attr_view, '\0')) {
keybuffer.resize (0);
std::copy (std::begin (key), std::end (key), std::back_inserter (keybuffer));
while (true) {
auto const res = getxattr (path, keybuffer.c_str (), val.data (), val.size ());
if (res == E2BIG) {
val.resize (val.size () * 2);
continue;
}
if (res < 0)
cruft::posix::error::throw_code ();
val.resize (res);
break;
}
std::cout << keybuffer << ": " << val << ", ";
}
std::cout << "}";
}
do_stat (path);
do_xattr (path);
std::cout << '\n';
}