amuse/lib/DirectoryEnumerator.cpp

292 lines
9.0 KiB
C++

#ifdef _WIN32
#include <windows.h>
#include <cstdio>
#else
#include <dirent.h>
#endif
#include <sys/stat.h>
#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
#endif
#if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
#endif
#include <map>
#include "amuse/DirectoryEnumerator.hpp"
namespace amuse
{
DirectoryEnumerator::DirectoryEnumerator(SystemStringView path, Mode mode, bool sizeSort, bool reverse, bool noHidden)
{
Sstat theStat;
if (Stat(path.data(), &theStat) || !S_ISDIR(theStat.st_mode))
return;
#if _WIN32
SystemString wc(path);
wc += _S("/*");
WIN32_FIND_DATAW d;
HANDLE dir = FindFirstFileW(wc.c_str(), &d);
if (dir == INVALID_HANDLE_VALUE)
return;
switch (mode)
{
case Mode::Native:
do
{
if (!wcscmp(d.cFileName, _S(".")) || !wcscmp(d.cFileName, _S("..")))
continue;
if (noHidden && (d.cFileName[0] == L'.' || (d.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0))
continue;
SystemString fp(path);
fp += _S('/');
fp += d.cFileName;
Sstat st;
if (Stat(fp.c_str(), &st))
continue;
size_t sz = 0;
bool isDir = false;
if (S_ISDIR(st.st_mode))
isDir = true;
else if (S_ISREG(st.st_mode))
sz = st.st_size;
else
continue;
m_entries.emplace_back(fp, d.cFileName, sz, isDir);
} while (FindNextFileW(dir, &d));
break;
case Mode::DirsThenFilesSorted:
case Mode::DirsSorted:
{
std::map<SystemString, Entry, CaseInsensitiveCompare> sort;
do
{
if (!wcscmp(d.cFileName, _S(".")) || !wcscmp(d.cFileName, _S("..")))
continue;
if (noHidden && (d.cFileName[0] == L'.' || (d.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0))
continue;
SystemString fp(path);
fp += _S('/');
fp += d.cFileName;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISDIR(st.st_mode))
continue;
sort.emplace(std::make_pair(d.cFileName, Entry(fp, d.cFileName, 0, true)));
} while (FindNextFileW(dir, &d));
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
if (mode == Mode::DirsSorted)
break;
FindClose(dir);
dir = FindFirstFileW(wc.c_str(), &d);
}
case Mode::FilesSorted:
{
if (mode == Mode::FilesSorted)
m_entries.clear();
if (sizeSort)
{
std::multimap<size_t, Entry> sort;
do
{
if (!wcscmp(d.cFileName, _S(".")) || !wcscmp(d.cFileName, _S("..")))
continue;
if (noHidden && (d.cFileName[0] == L'.' || (d.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0))
continue;
SystemString fp(path);
fp += _S('/');
fp += d.cFileName;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISREG(st.st_mode))
continue;
sort.emplace(std::make_pair(st.st_size, Entry(fp, d.cFileName, st.st_size, false)));
} while (FindNextFileW(dir, &d));
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
}
else
{
std::map<SystemString, Entry, CaseInsensitiveCompare> sort;
do
{
if (!wcscmp(d.cFileName, _S(".")) || !wcscmp(d.cFileName, _S("..")))
continue;
if (noHidden && (d.cFileName[0] == L'.' || (d.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) != 0))
continue;
SystemString fp(path);
fp += _S('/');
fp += d.cFileName;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISREG(st.st_mode))
continue;
sort.emplace(std::make_pair(d.cFileName, Entry(fp, d.cFileName, st.st_size, false)));
} while (FindNextFileW(dir, &d));
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
}
break;
}
}
FindClose(dir);
#else
DIR* dir = opendir(path.data());
if (!dir)
return;
const dirent* d;
switch (mode)
{
case Mode::Native:
while ((d = readdir(dir)))
{
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
if (noHidden && d->d_name[0] == '.')
continue;
SystemString fp(path);
fp += '/';
fp += d->d_name;
Sstat st;
if (Stat(fp.c_str(), &st))
continue;
size_t sz = 0;
bool isDir = false;
if (S_ISDIR(st.st_mode))
isDir = true;
else if (S_ISREG(st.st_mode))
sz = st.st_size;
else
continue;
m_entries.emplace_back(fp, d->d_name, sz, isDir);
}
break;
case Mode::DirsThenFilesSorted:
case Mode::DirsSorted:
{
std::map<SystemString, Entry, CaseInsensitiveCompare> sort;
while ((d = readdir(dir)))
{
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
if (noHidden && d->d_name[0] == '.')
continue;
SystemString fp(path);
fp += '/';
fp += d->d_name;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISDIR(st.st_mode))
continue;
sort.emplace(std::make_pair(d->d_name, Entry(fp, d->d_name, 0, true)));
}
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
if (mode == Mode::DirsSorted)
break;
rewinddir(dir);
}
case Mode::FilesSorted:
{
if (mode == Mode::FilesSorted)
m_entries.clear();
if (sizeSort)
{
std::multimap<size_t, Entry> sort;
while ((d = readdir(dir)))
{
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
if (noHidden && d->d_name[0] == '.')
continue;
SystemString fp(path);
fp += '/';
fp += d->d_name;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISREG(st.st_mode))
continue;
sort.emplace(std::make_pair(st.st_size, Entry(fp, d->d_name, st.st_size, false)));
}
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
}
else
{
std::map<SystemString, Entry, CaseInsensitiveCompare> sort;
while ((d = readdir(dir)))
{
if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
continue;
if (noHidden && d->d_name[0] == '.')
continue;
SystemString fp(path);
fp += '/';
fp += d->d_name;
Sstat st;
if (Stat(fp.c_str(), &st) || !S_ISREG(st.st_mode))
continue;
sort.emplace(std::make_pair(d->d_name, Entry(fp, d->d_name, st.st_size, false)));
}
m_entries.reserve(sort.size());
if (reverse)
for (auto it = sort.crbegin(); it != sort.crend(); ++it)
m_entries.push_back(std::move(it->second));
else
for (auto& e : sort)
m_entries.push_back(std::move(e.second));
}
break;
}
}
closedir(dir);
#endif
}
}