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crn_find_files.cpp
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crn_find_files.cpp
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// File: crn_win32_find_files.cpp
// See Copyright Notice and license at the end of inc/crnlib.h
#include "crn_core.h"
#include "crn_find_files.h"
#include "crn_file_utils.h"
#include "crn_strutils.h"
#ifdef CRNLIB_USE_WIN32_API
#include "crn_winhdr.h"
#elif defined(__GNUC__)
#include <fnmatch.h>
#include <dirent.h>
#endif
namespace crnlib
{
#ifdef CRNLIB_USE_WIN32_API
bool find_files::find(const char* pBasepath, const char* pFilespec, uint flags)
{
m_last_error = S_OK;
m_files.resize(0);
return find_internal(pBasepath, "", pFilespec, flags, 0);
}
bool find_files::find(const char* pSpec, uint flags)
{
dynamic_string find_name(pSpec);
if (!file_utils::full_path(find_name))
return false;
dynamic_string find_pathname, find_filename;
if (!file_utils::split_path(find_name.get_ptr(), find_pathname, find_filename))
return false;
return find(find_pathname.get_ptr(), find_filename.get_ptr(), flags);
}
bool find_files::find_internal(const char* pBasepath, const char* pRelpath, const char* pFilespec, uint flags, int level)
{
WIN32_FIND_DATAA find_data;
dynamic_string filename;
dynamic_string_array child_paths;
if (flags & cFlagRecursive)
{
if (strlen(pRelpath))
file_utils::combine_path(filename, pBasepath, pRelpath, "*");
else
file_utils::combine_path(filename, pBasepath, "*");
HANDLE handle = FindFirstFileA(filename.get_ptr(), &find_data);
if (handle == INVALID_HANDLE_VALUE)
{
HRESULT hres = GetLastError();
if ((level == 0) && (hres != NO_ERROR) && (hres != ERROR_FILE_NOT_FOUND))
{
m_last_error = hres;
return false;
}
}
else
{
do
{
const bool is_dir = (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
bool skip = !is_dir;
if (is_dir)
skip = (strcmp(find_data.cFileName, ".") == 0) || (strcmp(find_data.cFileName, "..") == 0);
if (find_data.dwFileAttributes & (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_TEMPORARY))
skip = true;
if (find_data.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
{
if ((flags & cFlagAllowHidden) == 0)
skip = true;
}
if (!skip)
{
dynamic_string child_path(find_data.cFileName);
if ((!child_path.count_char('?')) && (!child_path.count_char('*')))
child_paths.push_back(child_path);
}
} while (FindNextFileA(handle, &find_data) != 0);
HRESULT hres = GetLastError();
FindClose(handle);
handle = INVALID_HANDLE_VALUE;
if (hres != ERROR_NO_MORE_FILES)
{
m_last_error = hres;
return false;
}
}
}
if (strlen(pRelpath))
file_utils::combine_path(filename, pBasepath, pRelpath, pFilespec);
else
file_utils::combine_path(filename, pBasepath, pFilespec);
HANDLE handle = FindFirstFileA(filename.get_ptr(), &find_data);
if (handle == INVALID_HANDLE_VALUE)
{
HRESULT hres = GetLastError();
if ((level == 0) && (hres != NO_ERROR) && (hres != ERROR_FILE_NOT_FOUND))
{
m_last_error = hres;
return false;
}
}
else
{
do
{
const bool is_dir = (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0;
bool skip = false;
if (is_dir)
skip = (strcmp(find_data.cFileName, ".") == 0) || (strcmp(find_data.cFileName, "..") == 0);
if (find_data.dwFileAttributes & (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_TEMPORARY))
skip = true;
if (find_data.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN)
{
if ((flags & cFlagAllowHidden) == 0)
skip = true;
}
if (!skip)
{
if (((is_dir) && (flags & cFlagAllowDirs)) || ((!is_dir) && (flags & cFlagAllowFiles)))
{
m_files.resize(m_files.size() + 1);
file_desc& file = m_files.back();
file.m_is_dir = is_dir;
file.m_base = pBasepath;
file.m_name = find_data.cFileName;
file.m_rel = pRelpath;
if (strlen(pRelpath))
file_utils::combine_path(file.m_fullname, pBasepath, pRelpath, find_data.cFileName);
else
file_utils::combine_path(file.m_fullname, pBasepath, find_data.cFileName);
}
}
} while (FindNextFileA(handle, &find_data) != 0);
HRESULT hres = GetLastError();
FindClose(handle);
if (hres != ERROR_NO_MORE_FILES)
{
m_last_error = hres;
return false;
}
}
for (uint i = 0; i < child_paths.size(); i++)
{
dynamic_string child_path;
if (strlen(pRelpath))
file_utils::combine_path(child_path, pRelpath, child_paths[i].get_ptr());
else
child_path = child_paths[i];
if (!find_internal(pBasepath, child_path.get_ptr(), pFilespec, flags, level + 1))
return false;
}
return true;
}
#elif defined(__GNUC__)
bool find_files::find(const char* pBasepath, const char* pFilespec, uint flags)
{
m_files.resize(0);
return find_internal(pBasepath, "", pFilespec, flags, 0);
}
bool find_files::find(const char* pSpec, uint flags)
{
dynamic_string find_name(pSpec);
if (!file_utils::full_path(find_name))
return false;
dynamic_string find_pathname, find_filename;
if (!file_utils::split_path(find_name.get_ptr(), find_pathname, find_filename))
return false;
return find(find_pathname.get_ptr(), find_filename.get_ptr(), flags);
}
bool find_files::find_internal(const char* pBasepath, const char* pRelpath, const char* pFilespec, uint flags, int level)
{
dynamic_string pathname;
if (strlen(pRelpath))
file_utils::combine_path(pathname, pBasepath, pRelpath);
else
pathname = pBasepath;
if (!pathname.is_empty())
{
char c = pathname.back();
if (c != '/')
pathname += "/";
}
DIR *dp = opendir(pathname.get_ptr());
if (!dp)
return level ? true : false;
dynamic_string_array paths;
for ( ; ; )
{
struct dirent *ep = readdir(dp);
if (!ep)
break;
if ((strcmp(ep->d_name, ".") == 0) || (strcmp(ep->d_name, "..") == 0))
continue;
const bool is_directory = (ep->d_type & DT_DIR) != 0;
const bool is_file = (ep->d_type & DT_REG) != 0;
dynamic_string filename(ep->d_name);
if (is_directory)
{
if (flags & cFlagRecursive)
{
paths.push_back(filename);
}
}
if (((is_file) && (flags & cFlagAllowFiles)) || ((is_directory) && (flags & cFlagAllowDirs)))
{
if (0 == fnmatch(pFilespec, filename.get_ptr(), 0))
{
m_files.resize(m_files.size() + 1);
file_desc& file = m_files.back();
file.m_is_dir = is_directory;
file.m_base = pBasepath;
file.m_rel = pRelpath;
file.m_name = filename;
file.m_fullname = pathname + filename;
}
}
}
closedir(dp);
dp = NULL;
if (flags & cFlagRecursive)
{
for (uint i = 0; i < paths.size(); i++)
{
dynamic_string childpath;
if (strlen(pRelpath))
file_utils::combine_path(childpath, pRelpath, paths[i].get_ptr());
else
childpath = paths[i];
if (!find_internal(pBasepath, childpath.get_ptr(), pFilespec, flags, level + 1))
return false;
}
}
return true;
}
#else
#error Unimplemented
#endif
} // namespace crnlib