func (repo *Repository) ListBranches(flags ...BranchType) ([]string, error) {
var cnames C.git_strarray
defer C.git_strarray_free(&cnames)
var cflags C.uint
if len(flags) == 0 {
cflags = C.uint(BRANCH_ALL)
} else {
for _, flag := range flags {
cflags |= C.uint(flag)
}
}
ecode := C.git_branch_list(&cnames, repo.git_repository, cflags)
if ecode != git_SUCCESS {
return nil, gitError()
}
// TODO: Find a safer way if one exists.
var namesSlice reflect.SliceHeader
length := int(cnames.count)
namesSlice.Data = uintptr(unsafe.Pointer(cnames.strings))
namesSlice.Len = length
namesSlice.Cap = length
cnameStrings := *(*[]*C.char)(unsafe.Pointer(&namesSlice))
names := make([]string, length)
for i := 0; i < len(cnameStrings); i++ {
names[i] = C.GoString(cnameStrings[i])
}
return names, nil
}
/**
* Parses an IPTC data blob generating a map of records and tags to
* string values.
*/
func parseIptcData(iptcData *C.IptcData) (Data, error) {
parsed := Data{}
for i := C.uint(0); i < iptcData.count; i++ {
dataSet := C.get_iptc_dataset(iptcData, i)
if parsed[int(dataSet.record)] == nil {
parsed[int(dataSet.record)] = make(map[int]string)
}
switch C.iptc_dataset_get_format(dataSet) {
case C.IPTC_FORMAT_BYTE, C.IPTC_FORMAT_SHORT, C.IPTC_FORMAT_LONG:
parsed[int(dataSet.record)][int(dataSet.tag)] = fmt.Sprintf("%d", C.iptc_dataset_get_value(dataSet))
case C.IPTC_FORMAT_BINARY:
value := make([]C.char, 256)
C.iptc_dataset_get_as_str(dataSet, &value[0], C.uint(len(value)))
parsed[int(dataSet.record)][int(dataSet.tag)] = fmt.Sprintf("%c", value[:(dataSet.size*3)-1])
default:
value := make([]C.uchar, 256)
actualLength := C.iptc_dataset_get_data(dataSet, &value[0], C.uint(len(value)))
parsed[int(dataSet.record)][int(dataSet.tag)] = fmt.Sprintf("%s", value[:actualLength-1])
}
}
return parsed, nil
}
// New initializes a new Map.
func New() *Map {
return &Map{
m: C.mapnik_map(C.uint(800), C.uint(600)),
width: 800,
height: 600,
}
}
func (db *Db) Get(_txn *Txn, key []byte, getbuff *uintptr, flags uint32) ([]byte, error) {
var data *C.char = (*C.char)(unsafe.Pointer(*getbuff))
var datalen C.uint
var txn *C.DB_TXN = nil
if _txn != nil {
txn = _txn.txn
}
ret := C.db_get(
db.db,
txn,
(*C.char)(unsafe.Pointer(&key[0])),
C.uint(len(key)),
&data,
&datalen,
C.uint(flags),
)
err := ResultToError(ret)
if err == nil {
*getbuff = uintptr(unsafe.Pointer(data))
if data == nil {
return nil, nil
} else {
r := C.GoBytes(unsafe.Pointer(data), C.int(datalen))
//C.free(unsafe.Pointer(data))
return r, nil
}
}
return nil, err
}
func (v *VirStorageVol) WipePattern(algorithm uint32, flags uint32) error {
result := C.virStorageVolWipePattern(v.ptr, C.uint(algorithm), C.uint(flags))
if result == -1 {
return GetLastError()
}
return nil
}
func (this *Geos) Polygon(exterior *Geom, interiors []*Geom) *Geom {
if len(interiors) == 0 {
geom := C.GEOSGeom_createPolygon_r(this.v, exterior.v, nil, C.uint(0))
if geom == nil {
return nil
}
err := C.GEOSNormalize_r(this.v, geom)
if err != 0 {
C.GEOSGeom_destroy(geom)
return nil
}
return &Geom{geom}
}
interiorPtr := make([]*C.GEOSGeometry, len(interiors))
for i, geom := range interiors {
interiorPtr[i] = geom.v
}
geom := C.GEOSGeom_createPolygon_r(this.v, exterior.v, &interiorPtr[0], C.uint(len(interiors)))
if geom == nil {
return nil
}
err := C.GEOSNormalize_r(this.v, geom)
if err != 0 {
C.GEOSGeom_destroy(geom)
return nil
}
return &Geom{geom}
}
func ImageFilterSubUint(src1, dest []byte, c uint) bool {
_src1 := (*C.uchar)(unsafe.Pointer(&src1[0]))
_dest := (*C.uchar)(unsafe.Pointer(&dest[0]))
_len := C.uint(min(len(src1), len(dest)))
_c := C.uint(c)
return C.SDL_imageFilterSubUint(_src1, _dest, _len, _c) == 0
}
func (s *Shout) updateParameters() {
// set hostname
p := C.CString(s.Host)
C.shout_set_host(s.struc, p)
C.free(unsafe.Pointer(p))
// set port
C.shout_set_port(s.struc, C.ushort(s.Port))
// set username
p = C.CString(s.User)
C.shout_set_user(s.struc, p)
C.free(unsafe.Pointer(p))
// set password
p = C.CString(s.Password)
C.shout_set_password(s.struc, p)
C.free(unsafe.Pointer(p))
// set mount point
p = C.CString(s.Mount)
C.shout_set_mount(s.struc, p)
C.free(unsafe.Pointer(p))
// set format
C.shout_set_format(s.struc, C.uint(s.Format))
// set protocol
C.shout_set_protocol(s.struc, C.uint(s.Protocol))
}
// DescribeWorkdir describes the working tree. It means describe HEAD
// and appends <mark> (-dirty by default) if the working tree is dirty.
func (repo *Repository) DescribeWorkdir(opts *DescribeOptions) (*DescribeResult, error) {
var resultPtr *C.git_describe_result
var cDescribeOpts *C.git_describe_options
if opts != nil {
var cpattern *C.char
if len(opts.Pattern) > 0 {
cpattern = C.CString(opts.Pattern)
defer C.free(unsafe.Pointer(cpattern))
}
cDescribeOpts = &C.git_describe_options{
version: C.GIT_DESCRIBE_OPTIONS_VERSION,
max_candidates_tags: C.uint(opts.MaxCandidatesTags),
describe_strategy: C.uint(opts.Strategy),
pattern: cpattern,
only_follow_first_parent: cbool(opts.OnlyFollowFirstParent),
show_commit_oid_as_fallback: cbool(opts.ShowCommitOidAsFallback),
}
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_describe_workdir(&resultPtr, repo.ptr, cDescribeOpts)
if ecode < 0 {
return nil, MakeGitError(ecode)
}
return newDescribeResultFromC(resultPtr), nil
}
func Prepare(fun *Function, nargs uint) (*Callable, int) {
var cif C.ffi_cif
var typp *C.ffi_type
ffi_type_void := ffi_type_for(TYPE_VOID, nil)
// recover from panic here
defer func() {
if x := recover(); x != nil {
println("panicking with value", x)
}
println("function returns normally") // executes only when hideErrors==true
}()
call := &Callable{}
println("cif size: ", unsafe.Sizeof(cif))
call.cifmem = Allocate(unsafe.Sizeof(cif) + 100)
call.argimem = Allocate(unsafe.Sizeof(typp) * 10)
call.cif = &call.cifs
// (*C.ffi_cif)(call.cifmem.Ptr())
// fmt.Println("cif ABI, nargs:", int(call.cif.abi), int(call.cif.nargs))
call.cif.abi = C.FFI_DEFAULT_ABI
call.cif.nargs = C.uint(nargs)
call.fun = fun
call.cif.rtype = &ffi_type_void
//stat := 777
println("cif address:", (unsafe.Pointer)(call.cif))
println("void type address:", (unsafe.Pointer)(&ffi_type_void))
println("cgo void type address:", (unsafe.Pointer)(&C.ffi_type_void))
stat := C.ffi_prep_cif(call.cif, C.FFI_DEFAULT_ABI, C.uint(nargs),
&ffi_type_void, nil)
/*&C.ffi_type_void, (**C.ffi_type)(call.argimem.ptr))*/
return call, int(stat)
}
func nWrapString(uc *C.SAP_UC, length C.int, strip bool) (result string, err error) {
var rc C.RFC_RC
var errorInfo C.RFC_ERROR_INFO
if length == -1 {
length = C.int(C.GoStrlenU((*C.SAP_UTF16)(uc)))
}
if length == 0 {
return "", err
}
utf8Size := C.uint(length*3) + 1
utf8str := (*C.char)(unsafe.Pointer(C.malloc((C.size_t)(utf8Size))))
defer C.free(unsafe.Pointer(utf8str)) // _todo: Memory access error on Windows only, when trying to free RFCCHAR1 of RFCTABLE in function call test
*utf8str = 0
resultLen := C.uint(0)
rc = C.RfcSAPUCToUTF8(uc, (C.uint)(length), (*C.RFC_BYTE)(utf8str), &utf8Size, &resultLen, &errorInfo)
if rc != C.RFC_OK {
return result, rfcError(errorInfo, "Failed wrapping a C string")
}
result = C.GoStringN(utf8str, length)
if strip {
result = strings.Trim(result, "\x00 ")
return
}
return
}
//Set both the verdict for the packet and a data buffer containing the packet
//data
func (p *NFPacket) SetResult(v Verdict, data []byte) {
if data == nil {
p.resultChannel <- C.struct_NFResult{Verdict: C.uint(v), Data: nil, Len: 0}
} else {
p.resultChannel <- C.struct_NFResult{Verdict: C.uint(v), Data: (*C.uint8_t)(&data[0]), Len: (C.int)(len(data))}
}
}
//export go_callback
func go_callback(queueId C.int, data *C.uchar, length C.int, cb *chan NFPacket) VerdictModified {
xdata := C.GoBytes(unsafe.Pointer(data), length)
packet := gopacket.NewPacket(xdata, layers.LayerTypeIPv4, gopacket.DecodeOptions{
Lazy: true,
NoCopy: true,
SkipDecodeRecovery: false,
})
p := NFPacket{
verdictChannel: make(chan Verdict),
verdictModifiedChannel: make(chan VerdictPacket),
Packet: packet,
}
select {
case (*cb) <- p:
select {
case v := <-p.verdictModifiedChannel:
return VerdictModified{
verdict: C.uint(v.Verdict),
data: (*C.uchar)(unsafe.Pointer(&v.Packet[0])),
length: C.uint(len(v.Packet)),
}
case v := <-p.verdictChannel:
return VerdictModified{
verdict: C.uint(v),
data: nil,
length: 0,
}
}
default:
return VerdictModified{verdict: C.uint(NF_DROP), data: nil, length: 0}
}
}
func Ellipse(x, y, a, b int, n, f bool) {
//
x0, y0 := C.int(x-a), C.int(y-b)
if f {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
} // C.GXcopyInverted ?
if !xxb {
C.XFillArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XFillArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
} else {
if !n {
C.XSetFunction(display, graphicsContext, C.GXinvert)
}
if !xxb {
C.XDrawArc(display, C.Drawable(window), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
C.XDrawArc(display, C.Drawable(pixmap), graphicsContext, C.int(x0), C.int(y0), C.uint(2*a), C.uint(2*b), 0, 64*360)
}
if !n {
C.XSetFunction(display, graphicsContext, C.GXcopy)
}
C.XFlush(display)
}
//export go_callback
func go_callback(queueId C.int, dev C.uint32_t, hookid C.uint8_t, data *C.uchar, length C.int, cb *chan NFPacket) VerdictModified {
xdata := C.GoBytes(unsafe.Pointer(data), length)
p := NFPacket{
verdictChannel: make(chan Verdict),
verdictModifiedChannel: make(chan VerdictPacket),
InPacket: xdata,
HookId: Hook(hookid),
DevIx: int(dev),
}
select {
case (*cb) <- p:
select {
case v := <-p.verdictModifiedChannel:
return VerdictModified{
verdict: C.uint(v.Verdict),
data: (*C.uchar)(unsafe.Pointer(&v.Packet[0])),
length: C.uint(len(v.Packet)),
}
case v := <-p.verdictChannel:
return VerdictModified{
verdict: C.uint(v),
data: nil,
length: 0,
}
}
default:
return VerdictModified{verdict: C.uint(NF_DROP), data: nil, length: 0}
}
}
func hsCompile(expression string, flags CompileFlag, mode ModeFlag, info *hsPlatformInfo) (hsDatabase, error) {
var db *C.hs_database_t
var err *C.hs_compile_error_t
var platform *C.hs_platform_info_t
if info != nil {
platform = &info.platform
}
expr := C.CString(expression)
ret := C.hs_compile(expr, C.uint(flags), C.uint(mode), platform, &db, &err)
C.free(unsafe.Pointer(expr))
if ret == C.HS_SUCCESS {
return db, nil
}
if err != nil {
defer C.hs_free_compile_error(err)
}
if ret == C.HS_COMPILER_ERROR && err != nil {
return nil, &compileError{C.GoString(err.message), int(err.expression)}
}
return nil, fmt.Errorf("compile error, %d", int(ret))
}
// Return true if the file header contains instrument information for the file. false otherwise.
func (f *File) SetInstrument(i *Instrument) bool {
c := new(C.SF_INSTRUMENT)
c.gain = C.int(i.Gain)
c.basenote = C.char(i.Basenote)
c.detune = C.char(i.Detune)
c.velocity_lo = C.char(i.Velocity[0])
c.velocity_hi = C.char(i.Velocity[1])
c.key_lo = C.char(i.Key[0])
c.key_hi = C.char(i.Key[1])
c.loop_count = C.int(i.LoopCount)
var index int
for ; index < i.LoopCount; index++ {
c.loops[index].mode = C.int(i.Loops[index].Mode)
c.loops[index].start = C.uint(i.Loops[index].Start)
c.loops[index].end = C.uint(i.Loops[index].End)
c.loops[index].count = C.uint(i.Loops[index].Count)
}
for ; index < 16; index++ {
c.loops[index].mode = C.int(None)
// why is this necessary? libsndfile doesn't check loopcount for AIFF
}
r := C.sf_command(f.s, C.SFC_SET_INSTRUMENT, unsafe.Pointer(c), C.int(unsafe.Sizeof(*c)))
return (r == C.SF_TRUE)
}
// NewSized initializes a new Map with the given size.
func NewSized(width, height int) *Map {
return &Map{
m: C.mapnik_map(C.uint(width), C.uint(height)),
width: width,
height: height,
}
}
func (vchannel *VirtioChannel) remap() error {
if vchannel.QueueAddress.Value != 0 {
// Can we map this address?
vchannel_size := C.vring_size(
C.uint(vchannel.QueueSize.Value),
platform.PageSize)
mmap, err := vchannel.VirtioDevice.mmap(
platform.Paddr(4096*vchannel.QueueAddress.Value),
uint64(vchannel_size))
if err != nil {
return err
}
// Initialize the ring.
C.vring_init(
&vchannel.vring,
C.uint(vchannel.QueueSize.Value),
unsafe.Pointer(&mmap[0]),
platform.PageSize)
// Notify the consumer.
vchannel.notifications <- VirtioNotification{}
} else {
// Leave the address cleared. No notifcations
// will be processed as per the Write() function.
vchannel.Consumed = 0
}
return nil
}
func NewVirConnectionWithAuth(uri string, username string, password string) (VirConnection, error) {
var cUri *C.char
authMechs := C.authMechs()
defer C.free(unsafe.Pointer(authMechs))
cUsername := C.CString(username)
defer C.free(unsafe.Pointer(cUsername))
cPassword := C.CString(password)
defer C.free(unsafe.Pointer(cPassword))
cbData := C.authData(cUsername, C.uint(len(username)), cPassword, C.uint(len(password)))
defer C.free(unsafe.Pointer(cbData))
auth := C.virConnectAuth{
credtype: authMechs,
ncredtype: C.uint(2),
cb: C.virConnectAuthCallbackPtr(unsafe.Pointer(C.authCb)),
cbdata: unsafe.Pointer(cbData),
}
if uri != "" {
cUri = C.CString(uri)
defer C.free(unsafe.Pointer(cUri))
}
ptr := C.virConnectOpenAuth(cUri, (*C.struct__virConnectAuth)(unsafe.Pointer(&auth)), C.uint(0))
if ptr == nil {
return VirConnection{}, GetLastError()
}
obj := VirConnection{ptr: ptr}
return obj, nil
}
func (d *VirDomain) SetVcpusFlags(vcpu uint16, flags uint) error {
result := C.virDomainSetVcpusFlags(d.ptr, C.uint(vcpu), C.uint(flags))
if result == -1 {
return GetLastError()
}
return nil
}
/**
* \brief Parse the given source file and the translation unit corresponding
* to that file.
*
* This routine is the main entry point for the Clang C API, providing the
* ability to parse a source file into a translation unit that can then be
* queried by other functions in the API. This routine accepts a set of
* command-line arguments so that the compilation can be configured in the same
* way that the compiler is configured on the command line.
*
* \param CIdx The index object with which the translation unit will be
* associated.
*
* \param source_filename The name of the source file to load, or NULL if the
* source file is included in \p command_line_args.
*
* \param command_line_args The command-line arguments that would be
* passed to the \c clang executable if it were being invoked out-of-process.
* These command-line options will be parsed and will affect how the translation
* unit is parsed. Note that the following options are ignored: '-c',
* '-emit-ast', '-fsyntex-only' (which is the default), and '-o <output file>'.
*
* \param num_command_line_args The number of command-line arguments in
* \p command_line_args.
*
* \param unsaved_files the files that have not yet been saved to disk
* but may be required for parsing, including the contents of
* those files. The contents and name of these files (as specified by
* CXUnsavedFile) are copied when necessary, so the client only needs to
* guarantee their validity until the call to this function returns.
*
* \param num_unsaved_files the number of unsaved file entries in \p
* unsaved_files.
*
* \param options A bitmask of options that affects how the translation unit
* is managed but not its compilation. This should be a bitwise OR of the
* CXTranslationUnit_XXX flags.
*
* \returns A new translation unit describing the parsed code and containing
* any diagnostics produced by the compiler. If there is a failure from which
* the compiler cannot recover, returns NULL.
*/
func (idx Index) Parse(fname string, args []string, us UnsavedFiles, options TranslationUnitFlags) TranslationUnit {
var (
c_fname *C.char = nil
c_us = us.to_c()
)
defer c_us.Dispose()
if fname != "" {
c_fname = C.CString(fname)
}
defer C.free(unsafe.Pointer(c_fname))
c_nargs := C.int(len(args))
c_cmds := make([]*C.char, len(args))
for i, _ := range args {
cstr := C.CString(args[i])
defer C.free(unsafe.Pointer(cstr))
c_cmds[i] = cstr
}
var c_args **C.char = nil
if len(args) > 0 {
c_args = &c_cmds[0]
}
o := C.clang_parseTranslationUnit(
idx.c,
c_fname,
c_args, c_nargs,
c_us.ptr(), C.uint(len(c_us)),
C.uint(options))
return TranslationUnit{o}
}
// setUpRing sets up the shared-memory ring buffer between the user process and the kernel.
func (h *TPacket) setUpRing() (err error) {
totalSize := C.uint(h.opts.framesPerBlock * h.opts.numBlocks * h.opts.frameSize)
switch h.tpVersion {
case TPacketVersion1, TPacketVersion2:
var tp C.struct_tpacket_req
tp.tp_block_size = C.uint(h.opts.blockSize)
tp.tp_block_nr = C.uint(h.opts.numBlocks)
tp.tp_frame_size = C.uint(h.opts.frameSize)
tp.tp_frame_nr = C.uint(h.opts.framesPerBlock * h.opts.numBlocks)
if _, err := C.setsockopt(h.fd, C.SOL_PACKET, C.PACKET_RX_RING, unsafe.Pointer(&tp), C.socklen_t(unsafe.Sizeof(tp))); err != nil {
return fmt.Errorf("setsockopt packet_rx_ring: %v", err)
}
case TPacketVersion3:
var tp C.struct_tpacket_req3
tp.tp_block_size = C.uint(h.opts.blockSize)
tp.tp_block_nr = C.uint(h.opts.numBlocks)
tp.tp_frame_size = C.uint(h.opts.frameSize)
tp.tp_frame_nr = C.uint(h.opts.framesPerBlock * h.opts.numBlocks)
tp.tp_retire_blk_tov = C.uint(h.opts.blockTimeout / time.Millisecond)
if _, err := C.setsockopt(h.fd, C.SOL_PACKET, C.PACKET_RX_RING, unsafe.Pointer(&tp), C.socklen_t(unsafe.Sizeof(tp))); err != nil {
return fmt.Errorf("setsockopt packet_rx_ring v3: %v", err)
}
default:
return errors.New("invalid tpVersion")
}
if h.ring, err = C.mmap(nil, C.size_t(totalSize), C.PROT_READ|C.PROT_WRITE, C.MAP_SHARED, C.int(h.fd), 0); err != nil {
return
}
if h.ring == nil {
return errors.New("no ring")
}
return nil
}
func (w *writer) Write(b []byte) (n int, err error) {
if len(b) == 0 {
return 0, nil
}
w.bzStream.next_in = (*C.char)(unsafe.Pointer(&b[0]))
w.bzStream.avail_in = C.uint(len(b))
for w.bzStream.avail_in > 0 {
// Compress the available data.
w.bzStream.next_out = (*C.char)(unsafe.Pointer(&w.outBuffer[0]))
w.bzStream.avail_out = C.uint(len(w.outBuffer))
ret := C.BZ2_bzCompress(&w.bzStream, C.BZ_RUN)
if ret != C.BZ_RUN_OK {
return len(b) - int(w.bzStream.avail_in), translateError(ret)
}
// Write the contents of the output buffer to the underlying writer.
if err = w.writeAvailOut(); err != nil {
return len(b) - int(w.bzStream.avail_in), err
}
}
return len(b), nil
}
func max(a, b C.int) C.uint {
if a > b {
return C.uint(a)
}
return C.uint(b)
}
func cstringArray(strings []string) **C.char {
c := C.mkStringArray(C.uint(len(strings)))
for i, str := range strings {
C.addStringToArray(c, C.CString(str), C.uint(i))
}
return c
}
func (strm *zstream) setOutBuf(buf []byte, size int) {
if buf == nil {
C.zlibstream_set_out_buf(&strm[0], nil, C.uint(size))
} else {
C.zlibstream_set_out_buf(&strm[0], unsafe.Pointer(&buf[0]), C.uint(size))
}
}
func (m *Material) GetMaterialProperty(key MatKey, typ TextureType, textureIndex int) (*MaterialProperty, Return) {
pKey := key.constString()
var pPropOut *C.struct_aiMaterialProperty
ret := C.aiGetMaterialProperty((*C.struct_aiMaterial)(m), pKey, C.uint(typ), C.uint(textureIndex), &pPropOut)
return (*MaterialProperty)(pPropOut), Return(ret)
}
func (this *Geos) CreateCoordSeq(size, dim uint32) (*CoordSeq, error) {
result := C.GEOSCoordSeq_create_r(this.v, C.uint(size), C.uint(dim))
if result == nil {
return nil, CreateError("could not create CoordSeq")
}
return &CoordSeq{result}, nil
}
func main() {
c := C.struct_columns{15, 30, 45}
sum := C.sum_columns(c)
fmt.Println(sum)
var a int = 15
var b int = 30
s := C.sum_vals((C.int)(a), (C.int)(b)) //调用C语言的函数
fmt.Println(s)
var goSum int = int(sum) //C语言的int转成Golang的int类型
fmt.Println(goSum)
in := []byte("test")
inLen := len(in)
out := (*C.uchar)(C.malloc(16))
outLen := C.uint(16)
r := C.update((*C.uchar)(&in[0]), C.uint(inLen), out, &outLen)
if r == 0 {
fmt.Printf("outlen=%d\n", outLen)
dst := fmt.Sprintf("%02X", C.GoBytes(unsafe.Pointer(out), C.int(outLen)))
fmt.Println(dst)
}
//C.free(unsafe.Pointer(out))
}