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scrape.js
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scrape.js
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/**********************************
* モジュール
**********************************/
const client = require('cheerio-httpcli');
const fs = require('fs');
/**********************************
* グローバル変数・定数
**********************************/
const URL = 'https://www.nankankeiba.com/';
const target_year = ['2018'];
/**********************************
* メイン処理
**********************************/
/**
* レースのリストをスクレイピングして作成する
*/
const createRaceList = function() {
return new Promise((resolve, reject) => {
const race_id_list = [];
target_year.forEach(year => {
// 各年のフォルダ作成
if(fs.readdirSync(__dirname + '/data/').indexOf(year + '年度') == -1) {
fs.mkdirSync(__dirname + '/data/' + year + '年度');
}
['04', '10'].forEach(period => {
// URLを作成
const url = URL + 'calendar/' + year + period + '.do';
// サイトにアクセス
const html = client.fetchSync(url);
const $ = html.$;
// レースのURLを取得
$('em a').each(function() {
const program_url = $(this).attr('href');
const result_url = program_url.replace(/[^0-9]/g, '');
// 1日のレース回数分ループ
// TODO レース回数は固定じゃないみたい
for(let i = 1; i <= 12; i++) {
let race_num = ('0' + i).slice(-2);
race_id_list.push(result_url + race_num);
}
// 各開催日のフォルダ作成
if(fs.readdirSync(__dirname + '/data/' + year + '年度/').indexOf(result_url) == -1) {
fs.mkdirSync(__dirname + '/data/' + year + '年度/' + result_url);
}
});
});
});
// ファイルに保存
fs.writeFileSync(__dirname + '/temp/racelist.json', JSON.stringify(race_id_list, null, 4));
// resolve(race_id_list);
resolve(["2018091221070301",
"2018091221070302",
"2018091221070303",
"2018091221070304",
"2018091221070305",
"2018091221070306",
"2018091221070307",
"2018091221070308",
"2018091221070309",
"2018091221070310",
"2018091221070311",
"2018091221070312",
"2018091321070401",
"2018091321070402",
"2018091321070403",
"2018091321070404",
"2018091321070405",
"2018091321070406",
"2018091321070407",
"2018091321070408",
"2018091321070409",
"2018091321070410",
"2018091321070411",
"2018091321070412",
"2018091421070501",
"2018091421070502",
"2018091421070503",
"2018091421070504",
"2018091421070505",
"2018091421070506",
"2018091421070507",
"2018091421070508",
"2018091421070509",
"2018091421070510",
"2018091421070511",
"2018091421070512",
"2018091820110101",
"2018091820110102",
"2018091820110103",
"2018091820110104",
"2018091820110105",
"2018091820110106",
"2018091820110107",
"2018091820110108",
"2018091820110109",
"2018091820110110",
"2018091820110111",
"2018091820110112",
"2018091920110201",
"2018091920110202",
"2018091920110203",
"2018091920110204",
"2018091920110205",
"2018091920110206",
"2018091920110207",
"2018091920110208",
"2018091920110209",
"2018091920110210",
"2018091920110211",
"2018091920110212",
"2018092020110301",
"2018092020110302",
"2018092020110303",
"2018092020110304",
"2018092020110305",
"2018092020110306",
"2018092020110307",
"2018092020110308",
"2018092020110309",
"2018092020110310",
"2018092020110311",
"2018092020110312",
"2018092120110401",
"2018092120110402",
"2018092120110403",
"2018092120110404",
"2018092120110405",
"2018092120110406",
"2018092120110407",
"2018092120110408",
"2018092120110409",
"2018092120110410",
"2018092120110411",
"2018092120110412",
"2018092418070101",
"2018092418070102",
"2018092418070103",
"2018092418070104",
"2018092418070105",
"2018092418070106",
"2018092418070107",
"2018092418070108",
"2018092418070109",
"2018092418070110",
"2018092418070111",
"2018092418070112",
"2018092518070201",
"2018092518070202",
"2018092518070203",
"2018092518070204",
"2018092518070205",
"2018092518070206",
"2018092518070207",
"2018092518070208",
"2018092518070209",
"2018092518070210",
"2018092518070211",
"2018092518070212",
"2018092618070301",
"2018092618070302",
"2018092618070303",
"2018092618070304",
"2018092618070305",
"2018092618070306",
"2018092618070307",
"2018092618070308",
"2018092618070309",
"2018092618070310",
"2018092618070311",
"2018092618070312",
"2018092620110501",
"2018092620110502",
"2018092620110503",
"2018092620110504",
"2018092620110505",
"2018092620110506",
"2018092620110507",
"2018092620110508",
"2018092620110509",
"2018092620110510",
"2018092620110511",
"2018092620110512",
"2018092718070401",
"2018092718070402",
"2018092718070403",
"2018092718070404",
"2018092718070405",
"2018092718070406",
"2018092718070407",
"2018092718070408",
"2018092718070409",
"2018092718070410",
"2018092718070411",
"2018092718070412",
"2018092720110601",
"2018092720110602",
"2018092720110603",
"2018092720110604",
"2018092720110605",
"2018092720110606",
"2018092720110607",
"2018092720110608",
"2018092720110609",
"2018092720110610",
"2018092720110611",
"2018092720110612",
"2018092818070501",
"2018092818070502",
"2018092818070503",
"2018092818070504",
"2018092818070505",
"2018092818070506",
"2018092818070507",
"2018092818070508",
"2018092818070509",
"2018092818070510",
"2018092818070511",
"2018092818070512",
"2018100119070101",
"2018100119070102",
"2018100119070103",
"2018100119070104",
"2018100119070105",
"2018100119070106",
"2018100119070107",
"2018100119070108",
"2018100119070109",
"2018100119070110",
"2018100119070111",
"2018100119070112",
"2018100219070201",
"2018100219070202",
"2018100219070203",
"2018100219070204",
"2018100219070205",
"2018100219070206",
"2018100219070207",
"2018100219070208",
"2018100219070209",
"2018100219070210",
"2018100219070211",
"2018100219070212",
"2018100319070301",
"2018100319070302",
"2018100319070303",
"2018100319070304",
"2018100319070305",
"2018100319070306",
"2018100319070307",
"2018100319070308",
"2018100319070309",
"2018100319070310",
"2018100319070311",
"2018100319070312",
"2018100419070401",
"2018100419070402",
"2018100419070403",
"2018100419070404",
"2018100419070405",
"2018100419070406",
"2018100419070407",
"2018100419070408",
"2018100419070409",
"2018100419070410",
"2018100419070411",
"2018100419070412",
"2018100519070501",
"2018100519070502",
"2018100519070503",
"2018100519070504",
"2018100519070505",
"2018100519070506",
"2018100519070507",
"2018100519070508",
"2018100519070509",
"2018100519070510",
"2018100519070511",
"2018100519070512",
"2018100820120101",
"2018100820120102",
"2018100820120103",
"2018100820120104",
"2018100820120105",
"2018100820120106",
"2018100820120107",
"2018100820120108",
"2018100820120109",
"2018100820120110",
"2018100820120111",
"2018100820120112"])
});
}
/**
* レースの詳細情報をスクレイピングして取得する
*/
const scrape = function (race_id_list) {
return new Promise((resolve, reject) => {
// レースの詳細情報をスクレイピング
function scrapeRaceInfo(url) {
const info_list = [];
// サイトにアクセス
const html = client.fetchSync(url);
const $ = html.$;
let cource = '';
let distance = '';
let circumference = '';
let div_a = $('div#race-data01-a');
div_a.each(function() {
let text = $(this).text();
text = text.replace(/(\r|\t)/g, '').split('\n').filter(Boolean);
// コース種別
cource = text[3][0];
// 距離
distance = text[3].slice(1, text[3].indexOf('m')).replace(/\D/g, '');
// 周り方
circumference = text[3].substr(text[3].indexOf('（') + 1, 1);
});
let prize = '';
let div_b = $('div#race-data01-b');
div_b.each(function() {
let text = $(this).text();
text = text.replace(/(\r|\t)/g, '').split('\n').filter(Boolean);
// 1着賞金
prize = text[2].split(' ')[1].slice(2).replace(/\D/g, '');
});
// 出馬表データを取得
const tr = $('table.tb-shousai tr');
tr.each(function() {
const td = $(this).find('td');
const td_len = td.length;
const info_map = {};
td.each(function(index) {
// テキストを取得
let text = $(this).text();
if(td_len == 15) {
// 枠番あり行の場合
switch(index % 15) {
case 0: // 枠番
info_map['bracket_number'] = text;
break;
case 1: // 馬番
info_map['horse_number'] = text;
break;
case 2: // 馬名、父馬名、母馬名、馬齢、性別
text = text.replace(/(\r|\t)/g, '').split('\n');
// info_map['father'] = text[0];
info_map['horse_name'] = text[2];
info_map['sex'] = text[7][0];
info_map['age'] = text[7][1];
// info_map['mother'] = text[9];
break;
case 3: // 騎手、斤量、調教師
text = text.replace(/(\r|\t)/g, '').split('\n').filter(Boolean);
info_map['burden'] = text[2];
$(this).find('a').each(function(a_index) {
switch(a_index) {
case 0:
info_map['jockey'] = $(this).attr('href').replace(/\D/g, '');
break;
case 1:
info_map['trainer'] = $(this).attr('href').replace(/\D/g, '');
break;
}
});
break;
case 5: // 馬体重、増減
text = text.replace(/(\r|\t)/g, '').split('\n');
info_map['weight'] = text[1];
info_map['margin'] = text[2];
break;
case 8: // 開催場所＆距離別成績
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text[5].indexOf('--') == -1) {
const array = splitByLength(text[5], 2);
const denominator = Number(array[0]) + Number(array[1]) + Number(array[2]) + Number(array[3]);
const win_rate = Number(array[0]) / denominator;
const ren_rate = (Number(array[0]) + Number(array[1])) / denominator;
const fuku_rate = (Number(array[0]) + Number(array[1]) + Number(array[2])) / denominator;
info_map['limit_win_rate'] = String(win_rate);
info_map['limit_ren_rate'] = String(ren_rate);
info_map['limit_fuku_rate'] = String(fuku_rate);
} else {
info_map['limit_win_rate'] = String(0);
info_map['limit_ren_rate'] = String(0);
info_map['limit_fuku_rate'] = String(0);
}
break;
case 9: // 成績
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text[4].indexOf('--') == -1) {
const array = splitByLength(text[4], 2);
const denominator = Number(array[0]) + Number(array[1]) + Number(array[2]) + Number(array[3]);
const win_rate = Number(array[0]) / denominator;
const ren_rate = (Number(array[0]) + Number(array[1])) / denominator;
const fuku_rate = (Number(array[0]) + Number(array[1]) + Number(array[2])) / denominator;
info_map['total_win_rate'] = String(win_rate);
info_map['total_ren_rate'] = String(ren_rate);
info_map['total_fuku_rate'] = String(fuku_rate);
} else {
info_map['total_win_rate'] = String(0);
info_map['total_ren_rate'] = String(0);
info_map['total_fuku_rate'] = String(0);
}
break;
case 10: // 前走
case 11: // 前々走
case 12: // 3走前
case 13: // 4走前
case 14: // 5走前
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text.length == 14) {
info_map[`prev${index - 9}_rank`] = text[0];
info_map[`prev${index - 9}_popularity`] = text[5].split(/\D/g)[1];
info_map[`prev${index - 9}_three_furlong`] = text[13];
let time = text[11].replace('(', '').replace(')', '');
if(text[0] == '1') {
time = Number(time * -1);
}
info_map[`prev${index - 9}_time`] = String(time);
}
break;
}
} else if(td_len == 14) {
// 枠番なし行の場合
switch(index % 14) {
case 0: // 馬番、枠番
info_map['bracket_number'] = (info_list[info_list.length - 1]['bracket_number']);
info_map['horse_number'] = text;
break;
case 1: // 馬名、父馬名、母馬名、馬齢、性別
text = text.replace(/(\r|\t)/g, '').split('\n');
// info_map['father'] = text[0];
info_map['horse_name'] = text[2];
info_map['sex'] = text[7][0];
info_map['age'] = text[7][1];
// info_map['mother'] = text[9];
break;
case 2: // 騎手、斤量、調教師
text = text.replace(/(\r|\t)/g, '').split('\n').filter(Boolean);
info_map['burden'] = text[2];
$(this).find('a').each(function(a_index) {
switch(a_index) {
case 0:
info_map['jockey'] = $(this).attr('href').replace(/\D/g, '');
break;
case 1:
info_map['trainer'] = $(this).attr('href').replace(/\D/g, '');
break;
}
});
break;
case 4: // 馬体重、増減
text = text.replace(/(\r|\t)/g, '').split('\n');
info_map['weight'] = text[1];
info_map['margin'] = text[2];
break;
case 7: // 開催場所＆距離別成績
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text[5].indexOf('--') == -1) {
const array = splitByLength(text[5], 2);
const denominator = Number(array[0]) + Number(array[1]) + Number(array[2]) + Number(array[3]);
const win_rate = Number(array[0]) / denominator;
const ren_rate = (Number(array[0]) + Number(array[1])) / denominator;
const fuku_rate = (Number(array[0]) + Number(array[1]) + Number(array[2])) / denominator;
info_map['limit_win_rate'] = String(win_rate);
info_map['limit_ren_rate'] = String(ren_rate);
info_map['limit_fuku_rate'] = String(fuku_rate);
} else {
info_map['limit_win_rate'] = String(0);
info_map['limit_ren_rate'] = String(0);
info_map['limit_fuku_rate'] = String(0);
}
break;
case 8: // 成績
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text[4].indexOf('--') == -1) {
const array = splitByLength(text[4], 2);
const denominator = Number(array[0]) + Number(array[1]) + Number(array[2]) + Number(array[3]);
const win_rate = Number(array[0]) / denominator;
const ren_rate = (Number(array[0]) + Number(array[1])) / denominator;
const fuku_rate = (Number(array[0]) + Number(array[1]) + Number(array[2])) / denominator;
info_map['total_win_rate'] = String(win_rate);
info_map['total_ren_rate'] = String(ren_rate);
info_map['total_fuku_rate'] = String(fuku_rate);
} else {
info_map['total_win_rate'] = String(0);
info_map['total_ren_rate'] = String(0);
info_map['total_fuku_rate'] = String(0);
}
break;
case 9: // 前走
case 10: // 前々走
case 11: // 3走前
case 12: // 4走前
case 13: // 5走前
text = text.replace(/(\r|\t|▲|☆)/g, '').split('\n').filter(Boolean);
if(text.length == 14) {
info_map[`prev${index - 9}_rank`] = text[0];
info_map[`prev${index - 9}_popularity`] = text[5].split(/\D/g)[1];
info_map[`prev${index - 9}_three_furlong`] = text[13];
let time = text[11].replace('(', '').replace(')', '');
if(text[0] == '1') {
time = Number(time * -1);
}
info_map[`prev${index - 9}_time`] = String(time);
}
break;
}
} else {
}
});
if(td_len != 0) {
info_map['cource'] = cource;
info_map['distance'] = distance;
info_map['circumference'] = circumference;
info_map['prize'] = prize;
info_list.push(info_map)
}
});
return info_list
}
function splitByLength(str, length) {
var resultArr = [];
if (!str || !length || length < 1) {
return resultArr;
}
var index = 0;
var start = index;
var end = start + length;
while (start < str.length) {
resultArr[index] = str.substring(start, end);
index++;
start = end;
end = start + length;
}
return resultArr;
}
// レースの結果情報をスクレイピング
function scrapeRaceResult(url) {
const result_list = [];
// サイトにアクセス
const html = client.fetchSync(url);
const $ = html.$;
const table = $('table.tb01');
table.each(function(table_index) {
if(table_index == 0) {
const tr = $(this).find('tr');
tr.each(function(tr_index) {
const td = $(this).find('td');
if(tr_index != 0) {
const result_map = {};
td.each(function (td_index) {
// テキストを取得
let text = $(this).text();
switch(td_index) {
case 0:
result_map['rank'] = text;
break;
case 2:
result_map['horse_number'] = text;
break;
case 12:
result_map['three_furlong'] = text;
break;
case 14:
result_map['popularity'] = text;
result_list.push(result_map);
break;
}
});
}
});
}
});
return result_list;
}
// 各レースに対して処理を実行
race_id_list.forEach(function(race_id, race_index) {
// URLを作成
const info_url = URL + 'uma_shosai/' + race_id + '.do';
const result_url = URL + 'result/' + race_id + '.do';
// レースの詳細情報を取得
const info_list = scrapeRaceInfo(info_url)
// レースの結果情報を取得
const result_list = scrapeRaceResult(result_url)
if(result_list.length > 0) {
// 詳細情報に結果情報を入れ込む
result_list.sort(function(a,b) {
if(Number(a.horse_number) < Number(b.horse_number)) return -1;
if(Number(a.horse_number) > Number(b.horse_number)) return 1;
return 0;
});
info_list.forEach(function(elem, index) {
info_list[index]['three_furlong'] = result_list[index].three_furlong;
info_list[index]['popularity'] = result_list[index].popularity;
info_list[index]['rank'] = result_list[index].rank;
});
// ファイルに保存
const dir_name = __dirname + '/data/' + target_year[0] + '年度/' + race_id.slice(0, -2) + '/';
const file_name = race_id + '.json';
fs.writeFileSync(dir_name + file_name, JSON.stringify(info_list, null, 4));
}
console.log(race_id + '(' + (race_index + 1) + '/' + race_id_list.length + ')');
});
resolve();
});
}
/**
* メイン処理の実行順を定義する
*/
const main = function () {
return new Promise((resolve, reject) => {
Promise.resolve()
.then(function () {
return createRaceList();
})
.then(result => {
return scrape(result)
})
.then(result => {
resolve();
})
.catch(err => {
reject(err);
});
});
};
main();