<commit_before>// Package osmpbf decodes OpenStreetMap pbf files.
// Use this package by creating a NewDecoder and passing it a PBF file. Use
// Decode to return Node, Way and Relation structs.
package osmpbf

import (
	"bytes"
	"code.google.com/p/goprotobuf/proto"
	"compress/zlib"
	"encoding/binary"
	"errors"
	"fmt"
	"github.com/qedus/osmpbf/OSMPBF"
	"io"
	"io/ioutil"
)

const (
	maxBlobHeaderSize = 64 * 1024
	maxBlobSize       = 32 * 1024 * 1024
)

var (
	parseCapabilities = map[string]bool{
		"OsmSchema-V0.6": true,
		"DenseNodes":     true}
)

type Node struct {
	Id   int64
	Lat  float64
	Lon  float64
	Tags map[string]string

	// TODO: Add DenseInfo
}

type Way struct {
	ID      int64
	Tags    map[string]string
	NodeIDs []int64

	// TODO: Add Info
}

type Relation struct {
	ID      int64
	Tags    map[string]string
	Members []*Member

	// TODO: Add Info
	// TODO: Add roles_sid
}

type MemberType int

const (
	NodeType MemberType = iota
	WayType
	RelationType
)

type Member struct {
	ID   int64
	Type MemberType
	Role string
}

// A Decoder reads and decodes OpenStreetMap PBF data from an input stream.
type Decoder struct {
	r io.Reader

	objectQueue []interface{}
	objectIndex int
}

// NewDecoder returns a new decoder that reads from r.
func NewDecoder(r io.Reader) *Decoder {
	return &Decoder{r, make([]interface{}, 0), 0}
}

// Decode reads the next object from the input stream and returns either a
// Node, Way or Relation struct representing the underlying OpenStreetMap PBF
// data.
//
// The end of the input stream is reported by an io.EOF error.
func (dec *Decoder) Decode() (interface{}, error) {
	if dec.objectIndex >= len(dec.objectQueue) {
		dec.objectQueue = dec.objectQueue[:0]
		dec.objectIndex = 0
		if err := dec.readNextPrimitiveBlock(); err != nil {
			return nil, err
		}
	}

	dec.objectIndex++
	return dec.objectQueue[dec.objectIndex-1], nil
}

func (dec *Decoder) readNextPrimitiveBlock() error {
	for {
		blobHeaderSize, err := dec.readBlobHeaderSize()
		if err != nil {
			return err
		}

		blobHeader, err := dec.readBlobHeader(blobHeaderSize)
		if err != nil {
			return err
		}

		blob, err := dec.readBlob(blobHeader)
		if err != nil {
			return err
		}<commit_msg>BREAKING: Rename Node.Id to Node.ID.<commit_after>// Package osmpbf decodes OpenStreetMap pbf files.
// Use this package by creating a NewDecoder and passing it a PBF file. Use
// Decode to return Node, Way and Relation structs.
package osmpbf

import (
	"bytes"
	"code.google.com/p/goprotobuf/proto"
	"compress/zlib"
	"encoding/binary"
	"errors"
	"fmt"
	"github.com/qedus/osmpbf/OSMPBF"
	"io"
	"io/ioutil"
)

const (
	maxBlobHeaderSize = 64 * 1024
	maxBlobSize       = 32 * 1024 * 1024
)

var (
	parseCapabilities = map[string]bool{
		"OsmSchema-V0.6": true,
		"DenseNodes":     true,
	}
)

type Node struct {
	ID   int64
	Lat  float64
	Lon  float64
	Tags map[string]string

	// TODO: Add DenseInfo
}

type Way struct {
	ID      int64
	Tags    map[string]string
	NodeIDs []int64

	// TODO: Add Info
}

type Relation struct {
	ID      int64
	Tags    map[string]string
	Members []*Member

	// TODO: Add Info
	// TODO: Add roles_sid
}

type MemberType int

const (
	NodeType MemberType = iota
	WayType
	RelationType
)

type Member struct {
	ID   int64
	Type MemberType
	Role string
}

// A Decoder reads and decodes OpenStreetMap PBF data from an input stream.
type Decoder struct {
	r io.Reader

	objectQueue []interface{}
	objectIndex int
}

// NewDecoder returns a new decoder that reads from r.
func NewDecoder(r io.Reader) *Decoder {
	return &Decoder{r, make([]interface{}, 0), 0}
}

// Decode reads the next object from the input stream and returns either a
// Node, Way or Relation struct representing the underlying OpenStreetMap PBF
// data.
//
// The end of the input stream is reported by an io.EOF error.
func (dec *Decoder) Decode() (interface{}, error) {
	if dec.objectIndex >= len(dec.objectQueue) {
		dec.objectQueue = dec.objectQueue[:0]
		dec.objectIndex = 0
		if err := dec.readNextPrimitiveBlock(); err != nil {
			return nil, err
		}
	}

	dec.objectIndex++
	return dec.objectQueue[dec.objectIndex-1], nil
}

func (dec *Decoder) readNextPrimitiveBlock() error {
	for {
		blobHeaderSize, err := dec.readBlobHeaderSize()
		if err != nil {
			return err
		}

		blobHeader, err := dec.readBlobHeader(blobHeaderSize)
		if err != nil {
			return err
		}

		blob, err := dec.readBlob(blobHeader)
		if err != nil {
			return err
		}

{'fraction_non_alphanumeric': 0.10518053375196232, 'fraction_numerical': 0.016595649248710473, 'mean_word_length': 3.3343051506316814, 'pattern_counts': {'":': 4, '<': 3, '<?xml version=': 0, '>': 5, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '1133517', 'n_tokens_mistral': 1670, 'n_tokens_neox': 1541, 'n_words': 494}