// +build windows,386 package kpathsea import ( "fmt" "os" "runtime" "syscall" "unsafe" ) // TeX Live 2014 使用的库 var kpse_dll_name string = "kpathsea620.dll" var dll *syscall.LazyDLL var kpse uintptr func init() { var err error dll = syscall.NewLazyDLL(kpse_dll_name) if err = dll.Load(); err != nil { kpse = 0 fmt.Println("Error:", err) return } kpse_new := dll.NewProc("kpathsea_new") kpse, _, err = kpse_new.Call() if errno := err.(syscall.Errno); errno != 0 { kpse = 0 fmt.Println("Error:", errno) return } kpse_set_program_name := dll.NewProc("kpathsea_set_program_name") program_name_ptr, _ := syscall.BytePtrFromString(os.Args[0]) _, _, err = kpse_set_program_name.Call(kpse, uintptr(unsafe.Pointer(program_name_ptr))) if errno := err.(syscall.Errno); errno != 0 { kpse = 0 fmt.Println("Error:", errno) return } runtime.SetFinalizer(dll, func(_ *syscall.LazyDLL) { fmt.Println("Finished") kpse_finish := dll.NewProc("kpathsea_finish") kpse_finish.Call(kpse) }) } func findFile_dynamic(name string, format FileFormatType, mustExist bool) string { var mustExist_int uintptr = 0 if mustExist { mustExist_int = 1 } // 初始化失败 if kpse == 0 { return "" } // 调用 kpathsea_find_file 找文件 kpse_find_file := dll.NewProc("kpathsea_find_file") name_ptr, _ := syscall.BytePtrFromString(name) path_uintptr, _, _ := kpse_find_file.Call(kpse, uintptr(unsafe.Pointer(name_ptr)), uintptr(format), mustExist_int) // 找不到 if path_uintptr == 0 { return "" } // 找到了 path_ptr := (*byte)(unsafe.Pointer(path_uintptr)) var path_bytes []byte for *path_ptr != 0 { // 逐字节附加返回的串 path_bytes = append(path_bytes, *path_ptr) path_ptr = (*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(path_ptr)) + 1)) } return string(path_bytes) }