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123 lines
2.9 KiB
123 lines
2.9 KiB
// Copyright (c) 2013 by Michael Dvorkin. All Rights Reserved.
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//=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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package mop
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import (
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`bytes`
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`fmt`
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`io/ioutil`
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`net/http`
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`strings`
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)
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// See http://www.gummy-stuff.org/Yahoo-data.htm
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// Also http://query.yahooapis.com/v1/public/yql
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// ?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in(%22ALU%22,%22AAPL%22)
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// &env=http%3A%2F%2Fdatatables.org%2Falltables.env
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// &format=json'
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//
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// Current, Change, Open, High, Low, 52-W High, 52-W Low, Volume, AvgVolume, P/E, Yield, Market Cap.
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// l1: last trade
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// c6: change rt
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// k2: change % rt
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// o: open
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// g: day's low
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// h: day's high
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// j: 52w low
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// k: 52w high
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// v: volume
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// a2: avg volume
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// r2: p/e rt
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// r: p/e
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// d: dividend/share
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// y: wield
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// j3: market cap rt
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// j1: market cap
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const yahoo_quotes_url = `http://download.finance.yahoo.com/d/quotes.csv?s=%s&f=,l1c6k2oghjkva2r2rdyj3j1`
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type Quote struct {
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Ticker string
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LastTrade string
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Change string
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ChangePercent string
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Open string
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Low string
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High string
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Low52 string
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High52 string
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Volume string
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AvgVolume string
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PeRatio string
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PeRatioX string
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Dividend string
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Yield string
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MarketCap string
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MarketCapX string
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}
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type Quotes []Quote
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func GetQuotes(tickers string) Quotes {
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// Format the URL and send the request.
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url := fmt.Sprintf(yahoo_quotes_url, tickers)
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response, err := http.Get(url)
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if err != nil {
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panic(err)
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}
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// Fetch response and get its body.
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defer response.Body.Close()
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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panic(err)
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}
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return parse(sanitize(body))
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}
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func (q *Quote) Color() string {
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if strings.Index(q.Change, "-") == -1 {
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return `</green><green>`
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} else {
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return `` // `</red><red>`
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}
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}
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func sanitize(body []byte) []byte {
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return bytes.Replace(bytes.TrimSpace(body), []byte{'"'}, []byte{}, -1)
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}
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func parse(body []byte) Quotes {
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lines := bytes.Split(body, []byte{'\n'})
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quotes := make(Quotes, len(lines))
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for i, line := range lines {
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// fmt.Printf("\n\n{%d} -> [%s]\n\n", i, string(line))
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parse_line(line, "es[i])
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}
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return quotes
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}
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func parse_line(line []byte, quote *Quote) {
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columns := bytes.Split(bytes.TrimSpace(line), []byte{','})
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quote.Ticker = string(columns[0])
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quote.LastTrade = string(columns[1])
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quote.Change = string(columns[2])
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quote.ChangePercent = string(columns[3])
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quote.Open = string(columns[4])
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quote.Low = string(columns[5])
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quote.High = string(columns[6])
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quote.Low52 = string(columns[7])
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quote.High52 = string(columns[8])
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quote.Volume = string(columns[9])
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quote.AvgVolume = string(columns[10])
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quote.PeRatio = string(columns[11])
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quote.PeRatioX = string(columns[12])
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quote.Dividend = string(columns[13])
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quote.Yield = string(columns[14])
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quote.MarketCap = string(columns[15])
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quote.MarketCapX = string(columns[16])
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}
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