-#include "../git-compat-util.h"
-#include "dirent.h"
+#include "../../git-compat-util.h"
struct DIR {
struct dirent dd_dir; /* includes d_type */
HANDLE dd_handle; /* FindFirstFile handle */
int dd_stat; /* 0-based index */
- char dd_name[1]; /* extend struct */
};
+static inline void finddata2dirent(struct dirent *ent, WIN32_FIND_DATAA *fdata)
+{
+ /* copy file name from WIN32_FIND_DATA to dirent */
+ memcpy(ent->d_name, fdata->cFileName, sizeof(ent->d_name));
+
+ /* Set file type, based on WIN32_FIND_DATA */
+ if (fdata->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ ent->d_type = DT_DIR;
+ else
+ ent->d_type = DT_REG;
+}
+
DIR *opendir(const char *name)
{
- DWORD attrs = GetFileAttributesA(name);
+ char pattern[MAX_PATH];
+ WIN32_FIND_DATAA fdata;
+ HANDLE h;
int len;
- DIR *p;
+ DIR *dir;
- /* check for valid path */
- if (attrs == INVALID_FILE_ATTRIBUTES) {
- errno = ENOENT;
+ /* check that name is not NULL */
+ if (!name) {
+ errno = EINVAL;
return NULL;
}
-
- /* check if it's a directory */
- if (!(attrs & FILE_ATTRIBUTE_DIRECTORY)) {
- errno = ENOTDIR;
- return NULL;
- }
-
/* check that the pattern won't be too long for FindFirstFileA */
len = strlen(name);
- if (is_dir_sep(name[len - 1]))
- len--;
if (len + 2 >= MAX_PATH) {
errno = ENAMETOOLONG;
return NULL;
}
-
- p = malloc(sizeof(DIR) + len + 2);
- if (!p)
+ /* copy name to temp buffer */
+ memcpy(pattern, name, len + 1);
+
+ /* append optional '/' and wildcard '*' */
+ if (len && !is_dir_sep(pattern[len - 1]))
+ pattern[len++] = '/';
+ pattern[len++] = '*';
+ pattern[len] = 0;
+
+ /* open find handle */
+ h = FindFirstFileA(pattern, &fdata);
+ if (h == INVALID_HANDLE_VALUE) {
+ DWORD err = GetLastError();
+ errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
return NULL;
+ }
- memset(p, 0, sizeof(DIR) + len + 2);
- strcpy(p->dd_name, name);
- p->dd_name[len] = '/';
- p->dd_name[len+1] = '*';
-
- p->dd_handle = INVALID_HANDLE_VALUE;
- return p;
+ /* initialize DIR structure and copy first dir entry */
+ dir = xmalloc(sizeof(DIR));
+ dir->dd_handle = h;
+ dir->dd_stat = 0;
+ finddata2dirent(&dir->dd_dir, &fdata);
+ return dir;
}
struct dirent *readdir(DIR *dir)
{
- WIN32_FIND_DATAA buf;
- HANDLE handle;
-
- if (!dir || !dir->dd_handle) {
+ if (!dir) {
errno = EBADF; /* No set_errno for mingw */
return NULL;
}
- if (dir->dd_handle == INVALID_HANDLE_VALUE && dir->dd_stat == 0) {
- DWORD lasterr;
- handle = FindFirstFileA(dir->dd_name, &buf);
- lasterr = GetLastError();
- dir->dd_handle = handle;
- if (handle == INVALID_HANDLE_VALUE && (lasterr != ERROR_NO_MORE_FILES)) {
- errno = err_win_to_posix(lasterr);
+ /* 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)) {
+ finddata2dirent(&dir->dd_dir, &fdata);
+ } else {
+ DWORD lasterr = GetLastError();
+ /* POSIX says you shouldn't set errno when readdir can't
+ find any more files; so, if another error we leave it set. */
+ if (lasterr != ERROR_NO_MORE_FILES)
+ errno = err_win_to_posix(lasterr);
return NULL;
}
- } else if (dir->dd_handle == INVALID_HANDLE_VALUE) {
- return NULL;
- } else if (!FindNextFileA(dir->dd_handle, &buf)) {
- DWORD lasterr = GetLastError();
- FindClose(dir->dd_handle);
- dir->dd_handle = INVALID_HANDLE_VALUE;
- /* POSIX says you shouldn't set errno when readdir can't
- find any more files; so, if another error we leave it set. */
- if (lasterr != ERROR_NO_MORE_FILES)
- errno = err_win_to_posix(lasterr);
- return NULL;
}
- /* We get here if `buf' contains valid data. */
- strcpy(dir->dd_dir.d_name, buf.cFileName);
++dir->dd_stat;
-
- /* Set file type, based on WIN32_FIND_DATA */
- dir->dd_dir.d_type = 0;
- if (buf.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
- dir->dd_dir.d_type |= DT_DIR;
- else
- dir->dd_dir.d_type |= DT_REG;
-
return &dir->dd_dir;
}
return -1;
}
- if (dir->dd_handle != INVALID_HANDLE_VALUE)
- FindClose(dir->dd_handle);
+ FindClose(dir->dd_handle);
free(dir);
return 0;
}