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efl/src/lib/eina/eina_file_win32.c

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/* EINA - EFL data type library
* Copyright (C) 2010 Vincent Torri
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_ALLOCA_H
# include <alloca.h>
#elif defined __GNUC__
# define alloca __builtin_alloca
#elif defined _AIX
# define alloca __alloca
#elif defined _MSC_VER
# include <malloc.h>
# define alloca _alloca
#else
# include <stddef.h>
# ifdef __cplusplus
extern "C"
# endif
void *alloca (size_t);
#endif
#include <sys/types.h>
#include <sys/stat.h>
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#include <Evil.h>
#include "eina_config.h"
#include "eina_private.h"
/* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
#include "eina_safety_checks.h"
#include "eina_file.h"
#include "eina_stringshare.h"
#include "eina_hash.h"
#include "eina_list.h"
#include "eina_lock.h"
#include "eina_log.h"
/*============================================================================*
* Local *
*============================================================================*/
/**
* @cond LOCAL
*/
#ifndef EINA_LOG_COLOR_DEFAULT
#define EINA_LOG_COLOR_DEFAULT EINA_COLOR_CYAN
#endif
#ifdef ERR
#undef ERR
#endif
#define ERR(...) EINA_LOG_DOM_ERR(_eina_file_log_dom, __VA_ARGS__)
#ifdef WRN
#undef WRN
#endif
#define WRN(...) EINA_LOG_DOM_WARN(_eina_file_log_dom, __VA_ARGS__)
#ifdef DBG
#undef DBG
#endif
#define DBG(...) EINA_LOG_DOM_DBG(_eina_file_log_dom, __VA_ARGS__)
#ifdef MAP_FAILED
# undef MAP_FAILED
#endif
#define MAP_FAILED ((void *)-1)
typedef struct _Eina_File_Iterator Eina_File_Iterator;
typedef struct _Eina_Lines_Iterator Eina_Lines_Iterator;
typedef struct _Eina_File_Direct_Iterator Eina_File_Direct_Iterator;
typedef struct _Eina_File_Map Eina_File_Map;
struct _Eina_File_Iterator
{
Eina_Iterator iterator;
WIN32_FIND_DATA data;
HANDLE handle;
size_t length;
Eina_Bool is_last : 1;
char dir[1];
};
struct _Eina_Lines_Iterator
{
Eina_Iterator iterator;
Eina_File *fp;
const char *map;
const char *end;
int boundary;
Eina_File_Line current;
};
struct _Eina_File_Direct_Iterator
{
Eina_Iterator iterator;
WIN32_FIND_DATA data;
HANDLE handle;
size_t length;
Eina_Bool is_last : 1;
Eina_File_Direct_Info info;
char dir[1];
};
struct _Eina_File
{
const char *filename;
Eina_Hash *map;
Eina_Hash *rmap;
void *global_map;
Eina_Lock lock;
ULONGLONG length;
ULONGLONG mtime;
int refcount;
int global_refcount;
HANDLE handle;
HANDLE fm;
Eina_Bool shared : 1;
Eina_Bool delete_me : 1;
};
struct _Eina_File_Map
{
void *map;
unsigned long int offset;
unsigned long int length;
int refcount;
};
static Eina_Hash *_eina_file_cache = NULL;
static Eina_Lock _eina_file_lock_cache;
static int _eina_file_log_dom = -1;
static Eina_Bool
_eina_file_win32_is_dir(const char *dir)
{
#ifdef UNICODE
wchar_t *wdir = NULL;
#endif
DWORD attr;
/* check if it's a directory */
#ifdef UNICODE
wdir = evil_char_to_wchar(dir);
if (!wdir)
return EINA_FALSE;
attr = GetFileAttributes(wdir);
free(wdir);
#else
attr = GetFileAttributes(dir);
#endif
if (attr == 0xFFFFFFFF)
return EINA_FALSE;
if (!(attr & FILE_ATTRIBUTE_DIRECTORY))
return EINA_FALSE;
return EINA_TRUE;
}
static char *
_eina_file_win32_dir_new(const char *dir)
{
char *new_dir;
size_t length;
length = strlen(dir);
new_dir = (char *)malloc(sizeof(char) * length + 5);
if (!new_dir)
return NULL;
memcpy(new_dir, dir, length);
memcpy(new_dir + length, "\\*.*", 5);
return new_dir;
}
static HANDLE
_eina_file_win32_first_file(const char *dir, WIN32_FIND_DATA *fd)
{
HANDLE h;
#ifdef UNICODE
wchar_t *wdir = NULL;
wdir = evil_char_to_wchar(dir);
if (!wdir)
return NULL;
h = FindFirstFile(wdir, fd);
free(wdir);
#else
h = FindFirstFile(dir, fd);
#endif
if (!h)
return NULL;
while ((fd->cFileName[0] == '.') &&
((fd->cFileName[1] == '\0') ||
((fd->cFileName[1] == '.') && (fd->cFileName[2] == '\0'))))
{
if (!FindNextFile(h, fd))
return NULL;
}
return h;
}
static Eina_Bool
_eina_file_win32_ls_iterator_next(Eina_File_Iterator *it, void **data)
{
#ifdef UNICODE
wchar_t *old_name;
#else
char *old_name;
#endif
char *name;
char *cname;
size_t length;
Eina_Bool is_last;
Eina_Bool res = EINA_TRUE;
if (it->handle == INVALID_HANDLE_VALUE)
return EINA_FALSE;
is_last = it->is_last;
#ifdef UNICODE
old_name = _wcsdup(it->data.cFileName);
#else
old_name = _strdup(it->data.cFileName);
#endif
if (!old_name)
return EINA_FALSE;
do {
if (!FindNextFile(it->handle, &it->data))
{
if (GetLastError() == ERROR_NO_MORE_FILES)
it->is_last = EINA_TRUE;
else
res = EINA_FALSE;
}
} while ((it->data.cFileName[0] == '.') &&
((it->data.cFileName[1] == '\0') ||
((it->data.cFileName[1] == '.') && (it->data.cFileName[2] == '\0')))); /* FIXME: what about UNICODE ? */
#ifdef UNICODE
cname = evil_wchar_to_char(old_name);
if (!cname)
return EINA_FALSE;
#else
cname = old_name;
#endif
length = strlen(cname);
name = alloca(length + 2 + it->length);
memcpy(name, it->dir, it->length);
memcpy(name + it->length, "\\", 1);
memcpy(name + it->length + 1, cname, length + 1);
*data = (char *)eina_stringshare_add(name);
#ifdef UNICODE
free(cname);
#endif
free(old_name);
if (is_last)
res = EINA_FALSE;
return res;
}
static HANDLE
_eina_file_win32_ls_iterator_container(Eina_File_Iterator *it)
{
return it->handle;
}
static void
_eina_file_win32_ls_iterator_free(Eina_File_Iterator *it)
{
if (it->handle != INVALID_HANDLE_VALUE)
FindClose(it->handle);
EINA_MAGIC_SET(&it->iterator, 0);
free(it);
}
static Eina_Bool
_eina_file_win32_direct_ls_iterator_next(Eina_File_Direct_Iterator *it, void **data)
{
#ifdef UNICODE
wchar_t *old_name;
#else
char *old_name;
#endif
char *cname;
size_t length;
DWORD attr;
Eina_Bool is_last;
Eina_Bool res = EINA_TRUE;
if (it->handle == INVALID_HANDLE_VALUE)
return EINA_FALSE;
attr = it->data.dwFileAttributes;
is_last = it->is_last;
#ifdef UNICODE
old_name = _wcsdup(it->data.cFileName);
#else
old_name = _strdup(it->data.cFileName);
#endif
if (!old_name)
return EINA_FALSE;
do {
if (!FindNextFile(it->handle, &it->data))
{
if (GetLastError() == ERROR_NO_MORE_FILES)
it->is_last = EINA_TRUE;
else
res = EINA_FALSE;
}
#ifdef UNICODE
length = wcslen(old_name);
#else
length = strlen(old_name);
#endif
if (it->info.name_start + length + 1 >= PATH_MAX)
{
free(old_name);
#ifdef UNICODE
old_name = _wcsdup(it->data.cFileName);
#else
old_name = _strdup(it->data.cFileName);
#endif
continue;
}
} while ((it->data.cFileName[0] == '.') &&
((it->data.cFileName[1] == '\0') ||
((it->data.cFileName[1] == '.') && (it->data.cFileName[2] == '\0')))); /* FIXME: what about UNICODE ? */
#ifdef UNICODE
cname = evil_wchar_to_char(old_name);
if (!cname)
return EINA_FALSE;
#else
cname = old_name;
#endif
memcpy(it->info.path + it->info.name_start, cname, length);
it->info.name_length = length;
it->info.path_length = it->info.name_start + length;
it->info.path[it->info.path_length] = '\0';
if (attr & FILE_ATTRIBUTE_DIRECTORY)
it->info.type = EINA_FILE_DIR;
else if (attr & FILE_ATTRIBUTE_REPARSE_POINT)
it->info.type = EINA_FILE_LNK;
else if (attr & (FILE_ATTRIBUTE_ARCHIVE |
FILE_ATTRIBUTE_COMPRESSED |
FILE_ATTRIBUTE_HIDDEN |
FILE_ATTRIBUTE_NORMAL |
FILE_ATTRIBUTE_SPARSE_FILE |
FILE_ATTRIBUTE_TEMPORARY))
it->info.type = EINA_FILE_REG;
else
it->info.type = EINA_FILE_UNKNOWN;
*data = &it->info;
#ifdef UNICODE
free(cname);
#endif
free(old_name);
if (is_last)
res = EINA_FALSE;
return res;
}
static HANDLE
_eina_file_win32_direct_ls_iterator_container(Eina_File_Direct_Iterator *it)
{
return it->handle;
}
static void
_eina_file_win32_direct_ls_iterator_free(Eina_File_Direct_Iterator *it)
{
if (it->handle != INVALID_HANDLE_VALUE)
FindClose(it->handle);
EINA_MAGIC_SET(&it->iterator, 0);
free(it);
}
static void
_eina_file_real_close(Eina_File *file)
{
eina_hash_free(file->rmap);
eina_hash_free(file->map);
if (file->global_map != MAP_FAILED)
UnmapViewOfFile(file->global_map);
CloseHandle(file->fm);
CloseHandle(file->handle);
free(file);
}
static void
_eina_file_map_close(Eina_File_Map *map)
{
if (map->map != MAP_FAILED)
UnmapViewOfFile(map->map);
free(map);
}
static unsigned int
_eina_file_map_key_length(const void *key EINA_UNUSED)
{
return sizeof (unsigned long int) * 2;
}
static int
_eina_file_map_key_cmp(const unsigned long int *key1, int key1_length EINA_UNUSED,
const unsigned long int *key2, int key2_length EINA_UNUSED)
{
if (key1[0] - key2[0] == 0) return key1[1] - key2[1];
return key1[0] - key2[0];
}
static int
_eina_file_map_key_hash(const unsigned long int *key, int key_length EINA_UNUSED)
{
return eina_hash_int64(&key[0], sizeof (unsigned long int))
^ eina_hash_int64(&key[1], sizeof (unsigned long int));
}
static char *
_eina_file_win32_escape(const char *path, size_t *length)
{
char *result;
char *p;
char *q;
size_t len;
result = strdup(path ? path : "");
if (!result)
return NULL;
p = result;
while (*p)
{
if (*p == '\\') *p = '/';
p++;
}
p = result;
q = result;
if (!result)
return NULL;
if (length) len = *length;
else len = strlen(result);
while ((p = strchr(p, '/')))
{
// remove double `/'
if (p[1] == '/')
{
memmove(p, p + 1, --len - (p - result));
result[len] = '\0';
}
else
if (p[1] == '.'
&& p[2] == '.')
{
// remove `/../'
if (p[3] == '/')
{
char tmp;
len -= p + 3 - q;
memmove(q, p + 3, len - (q - result));
result[len] = '\0';
p = q;
/* Update q correctly. */
tmp = *p;
*p = '\0';
q = strrchr(result, '/');
if (!q) q = result;
*p = tmp;
}
else
// remove '/..$'
if (p[3] == '\0')
{
len -= p + 2 - q;
result[len] = '\0';
q = p;
++p;
}
else
{
q = p;
++p;
}
}
else
{
q = p;
++p;
}
}
if (length)
*length = len;
return result;
}
/* search '\r' and '\n' by preserving cache locality and page locality
in doing a search inside 4K boundary.
*/
static inline const char *
_eina_fine_eol(const char *start, int boundary, const char *end)
{
const char *cr;
const char *lf;
unsigned long long chunk;
while (start < end)
{
chunk = start + boundary < end ? boundary : end - start;
cr = memchr(start, '\r', chunk);
lf = memchr(start, '\n', chunk);
if (cr)
{
if (lf && lf < cr)
return lf + 1;
return cr + 1;
}
else if (lf)
return lf + 1;
start += chunk;
boundary = 4096;
}
return end;
}
static Eina_Bool
_eina_file_map_lines_iterator_next(Eina_Lines_Iterator *it, void **data)
{
const char *eol;
unsigned char match;
if (it->current.end >= it->end)
return EINA_FALSE;
match = *it->current.end;
while ((*it->current.end == '\n' || *it->current.end == '\r')
&& it->current.end < it->end)
{
if (match == *it->current.end)
it->current.index++;
it->current.end++;
}
it->current.index++;
if (it->current.end == it->end)
return EINA_FALSE;
eol = _eina_fine_eol(it->current.end,
it->boundary,
it->end);
it->boundary = (uintptr_t) eol & 0x3FF;
if (it->boundary == 0) it->boundary = 4096;
it->current.start = it->current.end;
it->current.end = eol;
it->current.length = eol - it->current.start - 1;
*data = &it->current;
return EINA_TRUE;
}
static Eina_File *
_eina_file_map_lines_iterator_container(Eina_Lines_Iterator *it)
{
return it->fp;
}
static void
_eina_file_map_lines_iterator_free(Eina_Lines_Iterator *it)
{
eina_file_map_free(it->fp, (void*) it->map);
eina_file_close(it->fp);
EINA_MAGIC_SET(&it->iterator, 0);
free(it);
}
/**
* @endcond
*/
/*============================================================================*
* Global *
*============================================================================*/
Eina_Bool
eina_file_init(void)
{
_eina_file_log_dom = eina_log_domain_register("eina_file",
EINA_LOG_COLOR_DEFAULT);
if (_eina_file_log_dom < 0)
{
EINA_LOG_ERR("Could not register log domain: eina_file");
return EINA_FALSE;
}
_eina_file_cache = eina_hash_string_djb2_new(NULL);
if (!_eina_file_cache)
{
ERR("Could not create cache.");
eina_log_domain_unregister(_eina_file_log_dom);
_eina_file_log_dom = -1;
return EINA_FALSE;
}
eina_lock_new(&_eina_file_lock_cache);
return EINA_TRUE;
}
Eina_Bool
eina_file_shutdown(void)
{
if (eina_hash_population(_eina_file_cache) > 0)
{
Eina_Iterator *it;
const char *key;
it = eina_hash_iterator_key_new(_eina_file_cache);
EINA_ITERATOR_FOREACH(it, key)
ERR("File [%s] still open !", key);
eina_iterator_free(it);
}
eina_hash_free(_eina_file_cache);
eina_lock_free(&_eina_file_lock_cache);
eina_log_domain_unregister(_eina_file_log_dom);
_eina_file_log_dom = -1;
return EINA_TRUE;
}
/*============================================================================*
* API *
*============================================================================*/
EAPI char *
eina_file_path_sanitize(const char *path)
{
char *result = NULL;
size_t len;
if (!path) return NULL;
len = strlen(path);
if (!evil_path_is_absolute(path))
{
DWORD l;
l = GetCurrentDirectory(0, NULL);
if (l > 0)
{
char *cwd;
char *tmp;
cwd = alloca(sizeof(char) * (l + 1));
GetCurrentDirectory(l + 1, cwd);
len += l + 2;
tmp = alloca(sizeof (char) * len);
snprintf(tmp, len, "%s\\%s", cwd, path);
tmp[len - 1] = '\0';
result = tmp;
}
}
return _eina_file_win32_escape(result ? result : path, &len);
}
EAPI Eina_Bool
eina_file_dir_list(const char *dir,
Eina_Bool recursive,
Eina_File_Dir_List_Cb cb,
void *data)
{
WIN32_FIND_DATA file;
HANDLE h;
char *new_dir;
EINA_SAFETY_ON_NULL_RETURN_VAL(cb, EINA_FALSE);
EINA_SAFETY_ON_NULL_RETURN_VAL(dir, EINA_FALSE);
EINA_SAFETY_ON_TRUE_RETURN_VAL(dir[0] == '\0', EINA_FALSE);
if (!_eina_file_win32_is_dir(dir))
return EINA_FALSE;
new_dir = _eina_file_win32_dir_new(dir);
if (!new_dir)
return EINA_FALSE;
h = _eina_file_win32_first_file(new_dir, &file);
if (h == INVALID_HANDLE_VALUE)
return EINA_FALSE;
do
{
char *filename;
# ifdef UNICODE
filename = evil_wchar_to_char(file.cFileName);
# else
filename = file.cFileName;
# endif /* ! UNICODE */
if (!strcmp(filename, ".") || !strcmp(filename, ".."))
continue;
cb(filename, dir, data);
if (recursive == EINA_TRUE)
{
char *path;
path = alloca(strlen(dir) + strlen(filename) + 2);
strcpy(path, dir);
strcat(path, "/");
strcat(path, filename);
if (!(file.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
continue;
eina_file_dir_list(path, recursive, cb, data);
}
# ifdef UNICODE
free(filename);
# endif /* UNICODE */
} while (FindNextFile(h, &file));
FindClose(h);
return EINA_TRUE;
}
EAPI Eina_Array *
eina_file_split(char *path)
{
Eina_Array *ea;
char *current;
size_t length;
EINA_SAFETY_ON_NULL_RETURN_VAL(path, NULL);
ea = eina_array_new(16);
if (!ea)
return NULL;
current = path;
while (*current)
{
if ((*current == '\\') || (*current == '/'))
{
if (((*current == '\\') && (current[1] == '\\')) ||
((*current == '/') && (current[1] == '/')))
{
*current = '\0';
goto next_char;
}
length = current - path;
if (length <= 0)
goto next_char;
eina_array_push(ea, path);
*current = '\0';
path = current + 1;
}
next_char:
current++;
}
if (*path != '\0')
eina_array_push(ea, path);
return ea;
}
EAPI Eina_Iterator *
eina_file_ls(const char *dir)
{
Eina_File_Iterator *it;
char *new_dir;
size_t length;
EINA_SAFETY_ON_NULL_RETURN_VAL(dir, NULL);
if (!dir || !*dir)
return NULL;
if (!_eina_file_win32_is_dir(dir))
return NULL;
length = strlen(dir);
it = calloc(1, sizeof (Eina_File_Iterator) + length);
if (!it)
return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
new_dir = _eina_file_win32_dir_new(dir);
if (!new_dir)
goto free_it;
it->handle = _eina_file_win32_first_file(new_dir, &it->data);
free(new_dir);
if (it->handle == INVALID_HANDLE_VALUE)
goto free_it;
memcpy(it->dir, dir, length + 1);
if ((dir[length - 1] != '\\') && (dir[length - 1] != '/'))
it->length = length;
else
it->length = length - 1;
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_eina_file_win32_ls_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_file_win32_ls_iterator_container);
it->iterator.free = FUNC_ITERATOR_FREE(_eina_file_win32_ls_iterator_free);
return &it->iterator;
free_it:
free(it);
return NULL;
}
EAPI Eina_Iterator *
eina_file_direct_ls(const char *dir)
{
Eina_File_Direct_Iterator *it;
char *new_dir;
size_t length;
EINA_SAFETY_ON_NULL_RETURN_VAL(dir, NULL);
if (!dir || !*dir)
return NULL;
length = strlen(dir);
if (length + 12 + 2 >= MAX_PATH)
return NULL;
it = calloc(1, sizeof(Eina_File_Direct_Iterator) + length);
if (!it)
return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
new_dir = _eina_file_win32_dir_new(dir);
if (!new_dir)
goto free_it;
it->handle = _eina_file_win32_first_file(new_dir, &it->data);
free(new_dir);
if (it->handle == INVALID_HANDLE_VALUE)
goto free_it;
memcpy(it->dir, dir, length + 1);
it->length = length;
memcpy(it->info.path, dir, length);
if ((dir[length - 1] == '\\') || (dir[length - 1] == '/'))
it->info.name_start = length;
else
{
it->info.path[length] = '\\';
it->info.name_start = length + 1;
}
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_eina_file_win32_direct_ls_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_file_win32_direct_ls_iterator_container);
it->iterator.free = FUNC_ITERATOR_FREE(_eina_file_win32_direct_ls_iterator_free);
return &it->iterator;
free_it:
free(it);
return NULL;
}
EAPI Eina_Iterator *
eina_file_stat_ls(const char *dir)
{
return eina_file_direct_ls(dir);
}
EAPI Eina_File *
eina_file_open(const char *path, Eina_Bool shared)
{
Eina_File *file;
Eina_File *n;
char *filename;
HANDLE handle;
HANDLE fm;
WIN32_FILE_ATTRIBUTE_DATA fad;
ULARGE_INTEGER length;
ULARGE_INTEGER mtime;
EINA_SAFETY_ON_NULL_RETURN_VAL(path, NULL);
filename = eina_file_path_sanitize(path);
if (!filename) return NULL;
/* FIXME: how to emulate shm_open ? Just OpenFileMapping ? */
#if 0
if (shared)
handle = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY,
NULL);
else
#endif
handle = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY,
NULL);
if (handle == INVALID_HANDLE_VALUE)
return NULL;
fm = CreateFileMapping(handle, NULL, PAGE_READONLY, 0, 0, NULL);
if (!fm)
goto close_handle;
if (!GetFileAttributesEx(filename, GetFileExInfoStandard, &fad))
goto close_fm;
length.u.LowPart = fad.nFileSizeLow;
length.u.HighPart = fad.nFileSizeHigh;
mtime.u.LowPart = fad.ftLastWriteTime.dwLowDateTime;
mtime.u.HighPart = fad.ftLastWriteTime.dwHighDateTime;
eina_lock_take(&_eina_file_lock_cache);
file = eina_hash_find(_eina_file_cache, filename);
if (file &&
(file->mtime != mtime.QuadPart || file->length != length.QuadPart))
{
file->delete_me = EINA_TRUE;
eina_hash_del(_eina_file_cache, file->filename, file);
_eina_file_real_close(file);
file = NULL;
}
if (!file)
{
n = malloc(sizeof(Eina_File) + strlen(filename) + 1);
if (!n)
{
eina_lock_release(&_eina_file_lock_cache);
goto close_fm;
}
memset(n, 0, sizeof(Eina_File));
n->filename = (char*) (n + 1);
strcpy((char*) n->filename, filename);
n->map = eina_hash_new(EINA_KEY_LENGTH(_eina_file_map_key_length),
EINA_KEY_CMP(_eina_file_map_key_cmp),
EINA_KEY_HASH(_eina_file_map_key_hash),
EINA_FREE_CB(_eina_file_map_close),
3);
n->rmap = eina_hash_pointer_new(NULL);
n->global_map = MAP_FAILED;
n->length = length.QuadPart;
n->mtime = mtime.QuadPart;
n->handle = handle;
n->fm = fm;
n->shared = shared;
eina_lock_new(&n->lock);
eina_hash_direct_add(_eina_file_cache, n->filename, n);
}
else
{
CloseHandle(fm);
CloseHandle(handle);
n = file;
}
eina_lock_take(&n->lock);
n->refcount++;
eina_lock_release(&n->lock);
eina_lock_release(&_eina_file_lock_cache);
free(filename);
return n;
close_fm:
CloseHandle(fm);
close_handle:
CloseHandle(handle);
return NULL;
}
EAPI void
eina_file_close(Eina_File *file)
{
EINA_SAFETY_ON_NULL_RETURN(file);
eina_lock_take(&file->lock);
file->refcount--;
eina_lock_release(&file->lock);
if (file->refcount != 0) return ;
eina_lock_take(&_eina_file_lock_cache);
eina_hash_del(_eina_file_cache, file->filename, file);
_eina_file_real_close(file);
eina_lock_release(&_eina_file_lock_cache);
}
EAPI size_t
eina_file_size_get(Eina_File *file)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(file, 0);
return file->length;
}
EAPI time_t
eina_file_mtime_get(Eina_File *file)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(file, 0);
return file->mtime;
}
EAPI const char *
eina_file_filename_get(Eina_File *file)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
return file->filename;
}
EAPI Eina_Iterator *eina_file_xattr_get(Eina_File *file EINA_UNUSED)
{
return NULL;
}
EAPI Eina_Iterator *eina_file_xattr_value_get(Eina_File *file EINA_UNUSED)
{
return NULL;
}
EAPI void *
eina_file_map_all(Eina_File *file, Eina_File_Populate rule EINA_UNUSED)
{
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
eina_lock_take(&file->lock);
if (file->global_map == MAP_FAILED)
{
void *data;
data = MapViewOfFile(file->fm, FILE_MAP_READ,
0, 0, file->length);
if (!data)
file->global_map = MAP_FAILED;
else
file->global_map = data;
}
if (file->global_map != MAP_FAILED)
{
file->global_refcount++;
return file->global_map;
}
eina_lock_release(&file->lock);
return NULL;
}
EAPI Eina_Iterator *
eina_file_map_lines(Eina_File *file)
{
Eina_Lines_Iterator *it;
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
if (file->length == 0) return NULL;
it = calloc(1, sizeof (Eina_Lines_Iterator));
if (!it) return NULL;
EINA_MAGIC_SET(&it->iterator, EINA_MAGIC_ITERATOR);
it->map = eina_file_map_all(file, EINA_FILE_SEQUENTIAL);
if (!it->map)
{
free(it);
return NULL;
}
eina_lock_take(&file->lock);
file->refcount++;
eina_lock_release(&file->lock);
it->fp = file;
it->boundary = 4096;
it->current.start = it->map;
it->current.end = it->current.start;
it->current.index = 0;
it->current.length = 0;
it->end = it->map + it->fp->length;
it->iterator.version = EINA_ITERATOR_VERSION;
it->iterator.next = FUNC_ITERATOR_NEXT(_eina_file_map_lines_iterator_next);
it->iterator.get_container = FUNC_ITERATOR_GET_CONTAINER(_eina_file_map_lines_iterator_container);
it->iterator.free = FUNC_ITERATOR_FREE(_eina_file_map_lines_iterator_free);
return &it->iterator;
}
EAPI void *
eina_file_map_new(Eina_File *file, Eina_File_Populate rule,
unsigned long int offset, unsigned long int length)
{
Eina_File_Map *map;
unsigned long int key[2];
EINA_SAFETY_ON_NULL_RETURN_VAL(file, NULL);
if (offset > file->length)
return NULL;
if (offset + length > file->length)
return NULL;
if (offset == 0 && length == file->length)
return eina_file_map_all(file, rule);
key[0] = offset;
key[1] = length;
eina_lock_take(&file->lock);
map = eina_hash_find(file->map, &key);
if (!map)
{
void *data;
map = malloc(sizeof (Eina_File_Map));
if (!map)
{
eina_lock_release(&file->lock);
return NULL;
}
data = MapViewOfFile(file->fm, FILE_MAP_READ,
offset & 0xffff0000,
offset & 0x0000ffff,
length);
if (!data)
map->map = MAP_FAILED;
else
map->map = data;
map->offset = offset;
map->length = length;
map->refcount = 0;
if (map->map == MAP_FAILED)
{
free(map);
eina_lock_release(&file->lock);
return NULL;
}
eina_hash_add(file->map, &key, map);
eina_hash_direct_add(file->rmap, map->map, map);
}
map->refcount++;
eina_lock_release(&file->lock);
return map->map;
}
EAPI void
eina_file_map_free(Eina_File *file, void *map)
{
EINA_SAFETY_ON_NULL_RETURN(file);
eina_lock_take(&file->lock);
if (file->global_map == map)
{
file->global_refcount--;
if (file->global_refcount > 0) goto on_exit;
UnmapViewOfFile(file->global_map);
file->global_map = MAP_FAILED;
}
else
{
Eina_File_Map *em;
unsigned long int key[2];
em = eina_hash_find(file->rmap, &map);
if (!em) goto on_exit;
em->refcount--;
if (em->refcount > 0) goto on_exit;
key[0] = em->offset;
key[1] = em->length;
eina_hash_del(file->rmap, &map, em);
eina_hash_del(file->map, &key, em);
}
on_exit:
eina_lock_release(&file->lock);
}
EAPI Eina_Bool
eina_file_map_faulted(Eina_File *file, void *map)
{
/*
* FIXME:
* vc++ : http://msdn.microsoft.com/en-us/library/windows/desktop/aa366801%28v=vs.85%29.aspx
*
* mingw-w64 :
* - 32 bits : there is a way to implement __try/__except/__final in C.
* see excpt.h header for 32-bits
* - 64 bits : some inline assembly required for it. See as example our
* startup-code in WinMainCRTStartup() in crtexe.c :
{
int ret = 255;
#ifdef __SEH__
asm ("\t.l_startw:\n"
"\t.seh_handler __C_specific_handler, @except\n"
"\t.seh_handlerdata\n"
"\t.long 1\n"
"\t.rva .l_startw, .l_endw, _gnu_exception_handler ,.l_endw\n"
"\t.text"
);
#endif
mingw_app_type = 1;
__security_init_cookie ();
ret = __tmainCRTStartup ();
#ifdef __SEH__
asm ("\tnop\n"
"\t.l_endw: nop\n");
#endif
return ret;
}
*/
return EINA_FALSE;
}
EAPI int
eina_file_statat(void *container EINA_UNUSED, Eina_File_Direct_Info *info, Eina_Stat *st)
{
struct __stat64 buf;
EINA_SAFETY_ON_NULL_RETURN_VAL(info, -1);
EINA_SAFETY_ON_NULL_RETURN_VAL(st, -1);
if (stat64(info->path, &buf))
{
if (info->type != EINA_FILE_LNK)
info->type = EINA_FILE_UNKNOWN;
return -1;
}
if (info->type == EINA_FILE_UNKNOWN)
{
if (S_ISREG(buf.st_mode))
info->type = EINA_FILE_REG;
else if (S_ISDIR(buf.st_mode))
info->type = EINA_FILE_DIR;
else
info->type = EINA_FILE_UNKNOWN;
}
st->dev = buf.st_dev;
st->ino = buf.st_ino;
st->mode = buf.st_mode;
st->nlink = buf.st_nlink;
st->uid = buf.st_uid;
st->gid = buf.st_gid;
st->rdev = buf.st_rdev;
st->size = buf.st_size;
st->blksize = 0;
st->blocks = 0;
st->atime = buf.st_atime;
st->mtime = buf.st_mtime;
st->ctime = buf.st_ctime;
st->atimensec = 0;
st->mtimensec = 0;
st->ctimensec = 0;
return 0;
}
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