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// +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)
}
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