fix build

Author: cloudwu

src/luazip.c

@@ -754,13 +754,7 @@ try_open(struct zipreader_name *name, const char *filename) {
 		}
 		filename += name->root_size;
 	}
-	struct filename_convert tmp;
-	if (MultiByteToWideChar(CP_UTF8, 0, name->zipfile, -1, tmp.tmp, sizeof(tmp)) == 0) {
-		return NULL;
-	}
-	zlib_filefunc64_def ffunc;
-	fill_win32_filefunc64W(&ffunc);
-	unzFile zf = unzOpen2_64((const char *)tmp.tmp, &ffunc);
+	unzFile zf = unzip_open(NULL, name->zipfile);
 	if (zf == NULL)
 		return NULL;
 
@@ -792,7 +786,7 @@ zipreader_read(zipreader_file zf, void *dst, int bytes) {
 	return unzReadCurrentFile(zf, dst, bytes);
 }
 
-size_t
+int64_t
 zipreader_tell(zipreader_file zf) {
 	return unztell64(zf);
 }
@@ -819,7 +813,7 @@ reopen_file(zipreader_file zf) {
 #define TMP_SKIP_BUFFER 4096
 
 static int
-skip_bytes(zipreader_file zf, ssize_t offset) {
+skip_bytes(zipreader_file zf, int64_t offset) {
 	char tmp[TMP_SKIP_BUFFER];
 	while (offset >= TMP_SKIP_BUFFER) {
 		if (unzReadCurrentFile(zf, tmp, TMP_SKIP_BUFFER) != TMP_SKIP_BUFFER)
@@ -832,22 +826,22 @@ skip_bytes(zipreader_file zf, ssize_t offset) {
 }
 
 int
-zipreader_seek(zipreader_file zf, ssize_t offset, int origin) {
+zipreader_seek(zipreader_file zf, int64_t offset, int origin) {
 	if (origin == SEEK_CUR && offset >= 0) {
 		return skip_bytes(zf, offset);
 	}
 	size_t size = zipreader_size(zf);
 	size_t cur_pos = unztell64(zf);
-	ssize_t new_pos;
+	int64_t new_pos;
 	switch (origin) {
 	case SEEK_SET:
 		new_pos = offset;
 		break;
 	case SEEK_CUR:
-		new_pos = (ssize_t)cur_pos + offset;
+		new_pos = (int64_t)cur_pos + offset;
 		break;
 	case SEEK_END:
-		new_pos = (ssize_t)size + offset;
+		new_pos = (int64_t)size + offset;
 		break;
 	default :
 		return -1;

src/zipreader.h

@@ -1,7 +1,7 @@
 #ifndef soluna_zip_reader_h
 #define soluna_zip_reader_h
 
-#include <stdlib.h>
+#include <stdint.h>
 
 struct zipreader_name {
 	const char * zipfile;
@@ -14,8 +14,8 @@ typedef void * zipreader_file;
 zipreader_file zipreader_open(struct zipreader_name *names, const char * filename);
 void zipreader_close(zipreader_file f);
 int zipreader_read(zipreader_file f, void *dst, int bytes);
-int zipreader_seek(zipreader_file f, ssize_t offset, int origin);
-size_t zipreader_tell(zipreader_file f);
+int zipreader_seek(zipreader_file f, int64_t offset, int origin);
+int64_t zipreader_tell(zipreader_file f);
 size_t zipreader_size(zipreader_file f);
 
 #endif