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-rw-r--r--compat/win32/dirent.c108
1 files changed, 108 insertions, 0 deletions
diff --git a/compat/win32/dirent.c b/compat/win32/dirent.c
new file mode 100644
index 0000000000..7a0debe51b
--- /dev/null
+++ b/compat/win32/dirent.c
@@ -0,0 +1,108 @@
+#include "../git-compat-util.h"
+#include "dirent.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 */
+};
+
+DIR *opendir(const char *name)
+{
+ DWORD attrs = GetFileAttributesA(name);
+ int len;
+ DIR *p;
+
+ /* check for valid path */
+ if (attrs == INVALID_FILE_ATTRIBUTES) {
+ errno = ENOENT;
+ 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)
+ 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;
+}
+
+struct dirent *readdir(DIR *dir)
+{
+ WIN32_FIND_DATAA buf;
+ HANDLE handle;
+
+ if (!dir || !dir->dd_handle) {
+ 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);
+ 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;
+}
+
+int closedir(DIR *dir)
+{
+ if (!dir) {
+ errno = EBADF;
+ return -1;
+ }
+
+ if (dir->dd_handle != INVALID_HANDLE_VALUE)
+ FindClose(dir->dd_handle);
+ free(dir);
+ return 0;
+}