From: Karsten Blees <blees@xxxxxxx>
Date: Sat, 14 Jan 2012 22:01:09 +0100
Changes opendir/readdir to use Windows Unicode APIs and convert between
UTF-8/UTF-16.
Removes parameter checks that are already covered by xutftowcs_path. This
changes detection of ENAMETOOLONG from MAX_PATH - 2 to MAX_PATH (matching
is_dir_empty in mingw.c). If name + "/*" or the resulting absolute path is
too long, FindFirstFile fails and errno is set through err_win_to_posix.
Increases the size of dirent.d_name to accommodate the full
WIN32_FIND_DATA.cFileName converted to UTF-8 (UTF-16 to UTF-8 conversion
may grow by factor three in the worst case).
Signed-off-by: Karsten Blees <blees@xxxxxxx>
Signed-off-by: Stepan Kasal <kasal@xxxxxx>
---
compat/win32/dirent.c | 30 ++++++++++--------------------
compat/win32/dirent.h | 2 +-
2 files changed, 11 insertions(+), 21 deletions(-)
diff --git a/compat/win32/dirent.c b/compat/win32/dirent.c
index 82a515c..52420ec 100644
--- a/compat/win32/dirent.c
+++ b/compat/win32/dirent.c
@@ -6,10 +6,10 @@ struct DIR {
int dd_stat; /* 0-based index */
};
-static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAA *fdata)
+static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAW *fdata)
{
- /* copy file name from WIN32_FIND_DATA to dirent */
- memcpy(ent->d_name, fdata->cFileName, sizeof(ent->d_name));
+ /* convert UTF-16 name to UTF-8 */
+ xwcstoutf(ent->d_name, fdata->cFileName, sizeof(ent->d_name));
/* Set file type, based on WIN32_FIND_DATA */
if (fdata->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
@@ -20,25 +20,15 @@ static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAA *fdata)
DIR *opendir(const char *name)
{
- char pattern[MAX_PATH];
- WIN32_FIND_DATAA fdata;
+ wchar_t pattern[MAX_PATH + 2]; /* + 2 for '/' '*' */
+ WIN32_FIND_DATAW fdata;
HANDLE h;
int len;
DIR *dir;
- /* check that name is not NULL */
- if (!name) {
- errno = EINVAL;
+ /* convert name to UTF-16 and check length < MAX_PATH */
+ if ((len = xutftowcs_path(pattern, name)) < 0)
return NULL;
- }
- /* check that the pattern won't be too long for FindFirstFileA */
- len = strlen(name);
- if (len + 2 >= MAX_PATH) {
- errno = ENAMETOOLONG;
- return NULL;
- }
- /* copy name to temp buffer */
- memcpy(pattern, name, len + 1);
/* append optional '/' and wildcard '*' */
if (len && !is_dir_sep(pattern[len - 1]))
@@ -47,7 +37,7 @@ DIR *opendir(const char *name)
pattern[len] = 0;
/* open find handle */
- h = FindFirstFileA(pattern, &fdata);
+ h = FindFirstFileW(pattern, &fdata);
if (h == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
@@ -72,8 +62,8 @@ struct dirent *readdir(DIR *dir)
/* if first entry, dirent has already been set up by opendir */
if (dir->dd_stat) {
/* get next entry and convert from WIN32_FIND_DATA to dirent */
- WIN32_FIND_DATAA fdata;
- if (FindNextFileA(dir->dd_handle, &fdata)) {
+ WIN32_FIND_DATAW fdata;
+ if (FindNextFileW(dir->dd_handle, &fdata)) {
finddata2dirent(&dir->dd_dir, &fdata);
} else {
DWORD lasterr = GetLastError();
diff --git a/compat/win32/dirent.h b/compat/win32/dirent.h
index 8838cd6..058207e 100644
--- a/compat/win32/dirent.h
+++ b/compat/win32/dirent.h
@@ -10,7 +10,7 @@ typedef struct DIR DIR;
struct dirent {
unsigned char d_type; /* file type to prevent lstat after readdir */
- char d_name[MAX_PATH]; /* file name */
+ char d_name[MAX_PATH * 3]; /* file name (* 3 for UTF-8 conversion) */
};
DIR *opendir(const char *dirname);
--
2.0.0.9635.g0be03cb
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