Move dir_iterator_t from libio into libsquashfs

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 309 deletions

diff --git a/lib/io/src/win32/dir_iterator.c b/lib/io/src/win32/dir_iterator.c
deleted file mode 100644
index 15cfbc5..0000000
--- a/lib/io/src/win32/dir_iterator.c
+++ /dev/null
@@ -1,309 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * dir_iterator.c
- *
- * Copyright (C) 2023 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-#include "io/dir_iterator.h"
-#include "util/util.h"
-#include "sqfs/error.h"
-#include "sqfs/io.h"
-
-#include <windows.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#define UNIX_EPOCH_ON_W32 11644473600UL
-#define W32_TICS_PER_SEC 10000000UL
-
-typedef struct {
-	sqfs_dir_iterator_t base;
-
-	WIN32_FIND_DATAW ent;
-	HANDLE dirhnd;
-	int state;
-	bool is_first;
-
-	WCHAR path[];
-} dir_iterator_win32_t;
-
-static sqfs_s64 w32time_to_unix(const FILETIME *ft)
-{
-	sqfs_u64 w32ts;
-
-	w32ts = ft->dwHighDateTime;
-	w32ts <<= 32UL;
-	w32ts |= ft->dwLowDateTime;
-
-	w32ts /= W32_TICS_PER_SEC;
-
-	if (w32ts <= UNIX_EPOCH_ON_W32)
-		return -((sqfs_s64)(UNIX_EPOCH_ON_W32 - w32ts));
-
-	return w32ts - UNIX_EPOCH_ON_W32;
-}
-
-static int dir_iterator_read_link(sqfs_dir_iterator_t *it, char **out)
-{
-	(void)it;
-	*out = NULL;
-	return SQFS_ERROR_UNSUPPORTED;
-}
-
-static int dir_iterator_next(sqfs_dir_iterator_t *it, sqfs_dir_entry_t **out)
-{
-	dir_iterator_win32_t *w32 = (dir_iterator_win32_t *)it;
-	sqfs_dir_entry_t *ent = NULL;
-	DWORD length;
-
-	if (w32->state == 0 && !w32->is_first) {
-		if (!FindNextFileW(w32->dirhnd, &w32->ent)) {
-			os_error_t err = get_os_error_state();
-
-			if (err.w32_errno == ERROR_NO_MORE_FILES) {
-				w32->state = 1;
-			} else {
-				w32->state = SQFS_ERROR_IO;
-			}
-
-			set_os_error_state(err);
-		}
-	}
-
-	w32->is_first = false;
-
-	if (w32->state != 0)
-		goto out;
-
-	length = WideCharToMultiByte(CP_UTF8, 0, w32->ent.cFileName,
-				     -1, NULL, 0, NULL, NULL);
-	if (length <= 0) {
-		w32->state = SQFS_ERROR_ALLOC;
-		goto out;
-	}
-
-	ent = alloc_flex(sizeof(*ent), 1, length + 1);
-	if (ent == NULL) {
-		w32->state = SQFS_ERROR_ALLOC;
-		goto out;
-	}
-
-	WideCharToMultiByte(CP_UTF8, 0, w32->ent.cFileName, -1,
-			    ent->name, length + 1, NULL, NULL);
-
-	if (w32->ent.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
-		ent->mode = S_IFDIR | 0755;
-	} else {
-		ent->mode = S_IFREG | 0644;
-		ent->size = w32->ent.nFileSizeHigh;
-		ent->size <<= 32UL;
-		ent->size |= w32->ent.nFileSizeLow;
-	}
-
-	ent->mtime = w32time_to_unix(&(w32->ent.ftLastWriteTime));
-out:
-	*out = ent;
-	return w32->state;
-}
-
-static void dir_iterator_destroy(sqfs_object_t *obj)
-{
-	dir_iterator_win32_t *dir = (dir_iterator_win32_t *)obj;
-
-	FindClose(dir->dirhnd);
-	free(dir);
-}
-
-static void dir_iterator_ignore_subdir(sqfs_dir_iterator_t *it)
-{
-	(void)it;
-}
-
-static int dir_iterator_open_file_ro(sqfs_dir_iterator_t *it,
-				     sqfs_istream_t **out)
-{
-	dir_iterator_win32_t *dir = (dir_iterator_win32_t *)it;
-	size_t plen, slen;
-	os_error_t err;
-	WCHAR *str16;
-	DWORD length;
-	HANDLE hnd;
-	char *str8;
-	int ret;
-
-	*out = NULL;
-
-	if (dir->state != 0)
-		return (dir->state > 0) ? SQFS_ERROR_NO_ENTRY : dir->state;
-
-	plen = wcslen(dir->path) - 1;
-	slen = wcslen(dir->ent.cFileName);
-
-	str16 = calloc(plen + slen + 1, sizeof(WCHAR));
-	if (str16 == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	memcpy(str16,        dir->path,          plen * sizeof(WCHAR));
-	memcpy(str16 + plen, dir->ent.cFileName, slen * sizeof(WCHAR));
-
-	hnd = CreateFileW(str16, GENERIC_READ, FILE_SHARE_READ, NULL,
-			  OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
-			  NULL);
-
-	err = get_os_error_state();
-	free(str16);
-	set_os_error_state(err);
-
-	if (hnd == INVALID_HANDLE_VALUE)
-		return SQFS_ERROR_IO;
-
-	length = WideCharToMultiByte(CP_UTF8, 0, dir->ent.cFileName,
-				     -1, NULL, 0, NULL, NULL);
-	if (length <= 0) {
-		CloseHandle(hnd);
-		return SQFS_ERROR_ALLOC;
-	}
-
-	str8 = calloc(1, length + 1);
-	if (str8 == NULL) {
-		CloseHandle(hnd);
-		return SQFS_ERROR_ALLOC;
-	}
-
-	WideCharToMultiByte(CP_UTF8, 0, dir->ent.cFileName, -1, str8,
-			    length + 1, NULL, NULL);
-
-	ret = sqfs_istream_open_handle(out, str8, hnd,
-				       SQFS_FILE_OPEN_READ_ONLY);
-	err = get_os_error_state();
-	free(str8);
-	if (ret != 0)
-		CloseHandle(hnd);
-	set_os_error_state(err);
-
-	return ret;
-}
-
-static int dir_iterator_read_xattr(sqfs_dir_iterator_t *it, sqfs_xattr_t **out)
-{
-	(void)it;
-	*out = NULL;
-	return 0;
-}
-
-static int dir_iterator_init(dir_iterator_win32_t *it);
-
-static int dir_iterator_open_subdir(sqfs_dir_iterator_t *it,
-				    sqfs_dir_iterator_t **out)
-{
-	const dir_iterator_win32_t *dir = (const dir_iterator_win32_t *)it;
-	dir_iterator_win32_t *sub = NULL;
-	size_t plen, slen, total;
-	int ret;
-
-	*out = NULL;
-
-	if (dir->state != 0)
-		return (dir->state > 0) ? SQFS_ERROR_NO_ENTRY : dir->state;
-
-	if (!(dir->ent.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))
-		return SQFS_ERROR_NOT_DIR;
-
-	plen = wcslen(dir->path) - 1;
-	slen = wcslen(dir->ent.cFileName);
-	total = plen + slen + 3;
-
-	sub = alloc_flex(sizeof(*sub), sizeof(WCHAR), total);
-	if (sub == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	memcpy(sub->path, dir->path, plen * sizeof(WCHAR));
-	memcpy(sub->path + plen, dir->ent.cFileName, slen * sizeof(WCHAR));
-	sub->path[plen + slen    ] = '\\';
-	sub->path[plen + slen + 1] = '*';
-	sub->path[plen + slen + 2] = '\0';
-
-	ret = dir_iterator_init(sub);
-	if (ret != 0) {
-		free(sub);
-		sub = NULL;
-	}
-
-	*out = (sqfs_dir_iterator_t *)sub;
-	return ret;
-}
-
-static int dir_iterator_init(dir_iterator_win32_t *it)
-{
-	sqfs_object_init(it, dir_iterator_destroy, NULL);
-
-	((sqfs_dir_iterator_t *)it)->next = dir_iterator_next;
-	((sqfs_dir_iterator_t *)it)->read_link = dir_iterator_read_link;
-	((sqfs_dir_iterator_t *)it)->open_subdir = dir_iterator_open_subdir;
-	((sqfs_dir_iterator_t *)it)->ignore_subdir = dir_iterator_ignore_subdir;
-	((sqfs_dir_iterator_t *)it)->open_file_ro = dir_iterator_open_file_ro;
-	((sqfs_dir_iterator_t *)it)->read_xattr = dir_iterator_read_xattr;
-	it->is_first = true;
-	it->state = 0;
-
-	it->dirhnd = FindFirstFileW(it->path, &it->ent);
-	if (it->dirhnd == INVALID_HANDLE_VALUE)
-		return SQFS_ERROR_IO;
-
-	return 0;
-}
-
-sqfs_dir_iterator_t *dir_iterator_create(const char *path)
-{
-	dir_iterator_win32_t *it;
-	size_t len, newlen;
-	WCHAR *wpath = NULL;
-	void *new = NULL;
-
-	/* convert path to UTF-16, append "\\*" */
-	wpath = path_to_windows(path);
-	if (wpath == NULL)
-		goto fail_alloc;
-
-	len = wcslen(wpath);
-	newlen = len + 1;
-
-	if (len > 0 && wpath[len - 1] != '\\')
-		newlen += 1;
-
-	new = realloc(wpath, sizeof(wpath[0]) * (newlen + 1));
-	if (new == NULL)
-		goto fail_alloc;
-
-	wpath = new;
-
-	if (len > 0 && wpath[len - 1] != '\\')
-		wpath[len++] = '\\';
-
-	wpath[len++] = '*';
-	wpath[len++] = '\0';
-
-	/* create the sourrounding iterator structure */
-	new = realloc(wpath, sizeof(*it) + len * sizeof(wpath[0]));
-	if (new == NULL)
-		goto fail_alloc;
-
-	it = new;
-	wpath = NULL;
-	memmove(it->path, new, len * sizeof(wpath[0]));
-
-	/* initialize */
-	memset(it, 0, offsetof(dir_iterator_win32_t, path));
-	if (dir_iterator_init(it) != 0) {
-		w32_perror(path);
-		free(it);
-		it = NULL;
-	}
-
-	return (sqfs_dir_iterator_t *)it;
-fail_alloc:
-	fprintf(stderr, "%s: allocation failure.\n", path);
-	free(wpath);
-	return NULL;
-}