C++ read_vector函数代码示例

/* load a solar system specification from file, return NULL on failure */
System* load_system(FILE* file)
{
	int nplanets;
	long long steps_to_write;
	Float duration, time_step;
	fscanf(file, "%d " FLOAT_SCANF_FORMAT " " FLOAT_SCANF_FORMAT " %lld",
			&nplanets, &duration, &time_step, &steps_to_write);
	System* sys = alloc_system(nplanets);
	if(!sys || duration < time_step)
	{
		free(sys);
		return NULL;
	}

	sys->time_step = time_step;
	sys->nplanets = nplanets;
	sys->cur_step = 0;
	sys->nsteps = ceil(duration / time_step);
	if(steps_to_write > sys->nsteps)
		steps_to_write = sys->nsteps;
	sys->print_period = (long long)((double)sys->nsteps / steps_to_write);

	for(int i = 0; i < nplanets; i++)
	{
		fscanf(file, FLOAT_SCANF_FORMAT, &sys->planets[i].mass);
		read_vector(file, sys->planets[i].position);
		read_vector(file, sys->planets[i].velocity);
	}
	return sys;
}

// Read binary ROM data for basis functions and coefficients
static int load_data(const char dir[], gsl_vector *cvec_amp, gsl_vector *cvec_phi, gsl_matrix *Bamp, gsl_matrix *Bphi, gsl_vector *cvec_amp_pre) {
  // Load binary data for amplitude and phase spline coefficients as computed in Mathematica
  int ret = XLAL_SUCCESS;
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_Amp_ciall.dat", cvec_amp);
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_Phase_ciall.dat", cvec_phi);
  ret |= read_matrix(dir, "SEOBNRv1ROM_SS_Bamp_bin.dat", Bamp);
  ret |= read_matrix(dir, "SEOBNRv1ROM_SS_Bphase_bin.dat", Bphi);
  ret |= read_vector(dir, "SEOBNRv1ROM_SS_AmpPrefac_ci.dat", cvec_amp_pre);
  return(ret);
}

static bool decodeRig(fsMsgRig &_msg, const std::string &buffer, Size &start) {
    bool success = true;
    success &= read_vector(_msg.mesh().m_quads,buffer,start);                 // read quads
    success &= read_vector(_msg.mesh().m_tris,buffer,start);                  // read triangles
    success &= read_vector(_msg.mesh().m_vertex_data.m_vertices,buffer,start);// read neutral vertices
    success &= read_small_vector(_msg.blendshape_names(),buffer,start);       // read names
    uint16_t bsize = 0;
    success &= read_pod(bsize,buffer,start);
    _msg.blendshapes().resize(bsize);
    for(uint16_t i = 0;i < bsize; i++)
        success &= read_vector(_msg.blendshapes()[i].m_vertices,buffer,start);                  // read blendshapes
    return success;
}

int f_plane(ULONG *arg)
{
	rsiVECTOR vec;
	void *plane,*surf,*actor;
	rsiResult err;

	if (!arg[0])
		return ERROR_SURFACE;
		
	surf = FindSurfListItem((char*)arg[0]);
	if (!surf)
		return rsiERR_SURFACE;

	err = rsiCreatePlane(&plane,surf);
	if (err)
		return err;

	if (arg[1])
	{
		if (!read_vector(&vec,(char*)arg[1]))
			return ERROR_VECTOR;
		err = rsiSetPlane(plane, rsiTPlanePos, &vec, rsiTDone);
		if (err)
			return err;
	}

	if (arg[2])
	{
		if (!read_vector(&vec,(char*)arg[2]))
			return ERROR_VECTOR;
		err = rsiSetPlane(plane, rsiTPlaneNorm, &vec, rsiTDone);
		if (err)
			return err;
	}

	if (arg[3])
	{
		actor = FindActorListItem((char*)arg[3]);
		if (!actor)
			return rsiERR_ACTOR;

		err = rsiSetPlane(plane,rsiTPlaneActor,actor,rsiTDone);
		if (err)
			return err;
	}

	return rsiERR_NONE;
}

TEST(rust, MP4Metadata)
{
  FILE* f = fopen("street.mp4", "rb");
  ASSERT_TRUE(f != nullptr);
  // Read just the moov header to work around the parser
  // treating mid-box eof as an error.
  //read_vector reader = read_vector(f, 1061);
  struct stat s;
  ASSERT_EQ(0, fstat(fileno(f), &s));
  read_vector reader = read_vector(f, s.st_size);
  fclose(f);

  mp4parse_io io = { vector_reader, &reader };
  mp4parse_parser* context = mp4parse_new(&io);
  ASSERT_NE(nullptr, context);

  mp4parse_error rv = mp4parse_read(context);
  EXPECT_EQ(MP4PARSE_OK, rv);

  uint32_t tracks = 0;
  rv = mp4parse_get_track_count(context, &tracks);
  EXPECT_EQ(MP4PARSE_OK, rv);
  EXPECT_EQ(2U, tracks);

  mp4parse_free(context);
}

/* R5RS library procedure read
 *   (read)
 *   (read [port])
 */
SCM scm_proc_read(FILE *file)
{
    int c = skip_comment_and_space(file);

    switch (c) {
    case '(':
        return read_list(file);
    case ')': /* List end */
        scheme_error("symtax error");
    case '[':
    case ']':
        scheme_error("unsupport bracket");
    case '{':
    case '}':
        scheme_error("unsupport brace");
    case '|':
        scheme_error("unsupport bar");
    case '#':
        c = fgetc(file);
        if ('(' == c) {
            return read_vector(file);
        } else {
            ungetc(c, file);
            return read_simple_datum(file, '#');
        }
    case '\'': /* Quotation */
        return new_cons(SCM_SYMBOL_QUOTE, new_cons(scm_proc_read(file), SCM_NULL));
    case '`':  /* Quasiquotation */
        scheme_error("unsupport quasiquotation");
    case ',':  /* (Splicing) Uuquotation */
        scheme_error("unsupport (splicing) unquotation");
    default:
        return read_simple_datum(file, c);
    }
}

ULONG sphere(ULONG *arg)
{
	rsiVECTOR vec;
	float fnum;
	void *sphere,*surf,*actor;
	rsiResult err;

	surf = FindSurfListItem((char*)arg[0]);
	if(!surf)
		return rsiERR_SURFACE;

	err = rsiCreateSphere(CTXT, &sphere,surf);
	if(err)
		return err;

	if(!read_vector(&vec,(char*)arg[1]))
		return ERROR_VECTOR;
	err = rsiSetSphere(CTXT, sphere,rsiTSpherePos,&vec,rsiTDone);
	if(err)
		return err;

	fnum = (float)atof((char*)arg[2]);
	err = rsiSetSphere(CTXT, sphere,rsiTSphereRadius,fnum,rsiTDone);
	if(err)
		return err;

	if(arg[3])
	{
		actor = FindActorListItem((char*)arg[3]);
		if(!actor)
			return rsiERR_ACTOR;

		err = rsiSetSphere(CTXT, sphere,rsiTSphereActor,actor,rsiTDone);
		if(err)
			return err;
	}

	if(arg[4])
	{
		fnum = (float)atof((char*)arg[4]);
		err = rsiSetSphere(CTXT, sphere,rsiTSphereFuzzy,fnum,rsiTDone);
		if(err)
			return err;
	}

	if(arg[5])
	{
		err = rsiSetSphere(CTXT, sphere,rsiTSphereFlags,rsiFSphereInverted,rsiTDone);
		if(err)
			return err;
	}

	if(insideCSG > 0)
	{
		SetCSGObject(sphere);
		insideCSG--;
	}

	return rsiERR_NONE;
}

void GameObjectMessage::read_object_points() {
  char point_count;
  socket_->read_buffer(&point_count, sizeof(char));
  for (char i = 0; i < point_count; i++) {
    points_.push_back(read_vector(socket_));
  }
}

void GameObjectMessage::read() {
  object_id_ = read_uint32(socket_);
  position_ = read_vector(socket_);
  object_type_ = read_char(socket_);
  read_object_points();
  alive_ = read_bool(socket_);
}

ULONG size(ULONG *arg)
{
	rsiVECTOR vec;
	float begin,end;
	int flags = rsiFActionLinear;

	if(!actor)
		return rsiERR_ACTOR;

	begin = (float)atof((char*)arg[0]);
	end = (float)atof((char*)arg[1]);

	if(!read_vector(&vec,(char*)arg[2]))
		return ERROR_VECTOR;

	if(arg[3])
	{
		if(KEYWORD((char*)arg[3], "LINEAR"))
			flags |= rsiFActionLinear;
		else
			if(KEYWORD((char*)arg[3], "SPLINE"))
				flags |= rsiFActionSpline;
			else
				return ERROR_INTERPOL;
	}

	return rsiSize(CTXT, actor->item,begin,end,&vec,/*rsiTSizeFlags,flags,*/rsiTDone);
}

int f_alignment(ULONG *arg)
{
	rsiVECTOR vec;
	float begin,end;
	int flags = rsiFActionLinear;

	if (!actor)
		return rsiERR_ACTOR;

	begin = end = 0;

	if (arg[0])
		begin = (float)atof((char*)arg[0]);

	if (arg[1])
	end = (float)atof((char*)arg[1]);

	if (!read_vector(&vec,(char*)arg[2]))
		return ERROR_VECTOR;

	if (arg[3])
	{
		if (!stricmp((char*)arg[3], "LINEAR"))
			flags |= rsiFActionLinear;
		else
			if (!stricmp((char*)arg[3], "SPLINE"))
				flags |= rsiFActionSpline;
			else
				return ERROR_INTERPOL;
	}

	return rsiAlignment(actor->item,begin,end,&vec,rsiTAlignFlags,flags,rsiTDone);
}

NurbsOverAdaptedGrid::NurbsOverAdaptedGrid(int depth) {
	string d = to_string(depth);
	string grid_file = "grid-" + d + ".dat";
	string cmd = "./generate --knots " + d + " > " + grid_file;
	system(cmd.c_str());
	ifstream fin(grid_file);

	int N; // number of elements
	fin >> N;
	for (int i = 0; i < N; i++) {
		Bounds b;
		fin >> b.left >> b.right >> b.up >> b.down;
	}

	int M; // number of B-splines
	fin >> M;
	for (int i = 0; i < M; i++) {
		string type;
		// Regular or Gnomon
		fin >> type;
		if (type == "Regular") {
			vector<double> x_knots, y_knots;
			read_vector(fin, &x_knots, 4);
			read_vector(fin, &y_knots, 4);
			Bspline* regular = new Bspline(x_knots, y_knots);
			unscaled_bsplines.push_back(regular);
		} else {  // type == "Gnomon"
			double x_mid, y_mid, shift_x, shift_y;
			fin >> x_mid >> y_mid >> shift_x >> shift_y;
			GnomonBspline* gnomon = new GnomonBspline(x_mid, y_mid, shift_x, shift_y);
			unscaled_bsplines.push_back(gnomon);
		}
	}

	LinearCombination* sum_of_unscaled = new LinearCombination(unscaled_bsplines);
	for (const Function2D* unscaled_bspline: unscaled_bsplines) {
		const GnomonBspline* gb = dynamic_cast<const GnomonBspline*>(unscaled_bspline);
		Quotient* scaled_bspline;
		if (gb != nullptr)
			scaled_bspline = new GnomonNurbs(*gb, *sum_of_unscaled);
		else
			scaled_bspline = new Quotient(*unscaled_bspline, *sum_of_unscaled);
		scaled_bsplines.push_back(scaled_bspline);
	}
}

bool read_vector(const std::string& filename, boost::numeric::ublas::vector<T>& v) {
  FILE* file = fopen(filename.c_str(), "rb");
  if (!file)
    return false;
  bool res = read_vector(file, v);
  fclose(file);

  return res;
}

void option_b() {
    /* Method solves the second subproblem:
     * Given a vector of numbers, find the longest increasing contiguous subsequence.
     */

    vector v = read_vector();
    printf("Longest increasing contiguous subsequence: ");
    print_vector(get_longest_increasing_subsequence(v));
}

ULONG triangle(ULONG *arg)
{
	void *surf,*actor=NULL;
	int i;
	rsiVECTOR v[3];
	rsiVECTOR n[3];

	surf = FindSurfListItem((char*)arg[0]);
	if(!surf)
		return rsiERR_SURFACE;

	for(i=0; i<3; i++)
	{
		if(!read_vector(&v[i],(char*)arg[i+1]))
			return ERROR_VECTOR;
	}

	if(arg[7])
	{
		actor = FindActorListItem((char*)arg[7]);
		if(!actor)
			return rsiERR_ACTOR;
	}

	if(arg[4])
	{
		for(i=0; i<3; i++)
		{
			if(arg[i+4])
			{
				if(!read_vector(&n[i],(char*)arg[i+4]))
					return ERROR_VECTOR;
			}
		}
		return rsiCreateTriangle(CTXT, surf, &v[0], &v[1], &v[2],
			rsiTTriangleActor, actor,
			rsiTTriangleNorm1, &n[0],
			rsiTTriangleNorm2, &n[1],
			rsiTTriangleNorm3, &n[2], rsiTDone);
	}
	else
		return rsiCreateTriangle(CTXT, surf, &v[0], &v[1], &v[2],
			rsiTTriangleActor, actor, rsiTDone);
}