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Regex tweaks for Yahoo market data

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master
Michael Dvorkin 12 years ago
parent 8f727f1204
commit 02c0ef1c16
3 changed files with 182 additions and 20 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 147
      dj.go
  2. 21
      lib/format.go
  3. 34
      lib/yahoo_market.go

147
dj.go
Unescape View File

@ -147,6 +147,141 @@ func main() {
<th>LAST</th>
<th>CHANGE</th>
</thead>
`
html = `
...
<table id="yfimktsumm" border="0" cellspacing="0" cellpadding="0" class="rts" summary="Market Summary">
<thead>
<th class="first">Symbol</th>
<th>Last</th>
<th>Change</th>
</thead>
<tbody>
<tr class="e">
<td><a href="/q?s=%5EDJI">Dow</a></td>
<td class="idx"><span id="yfs_l10_^dji">15,464.30</span></td>
<td class="cu"><span id="yfs_c10_^dji"><img width="10" height="14" style="margin-right:-2px;" border="0" src="http://l.yimg.com/os/mit/media/m/base/images/transparent-1093278.png" class="pos_arrow" alt="Up"> <b style="color:#008800;">3.38</b></span><span id="yfs_p20_^dji"><b style="color:#008800;"> (0.02%)</b></span></td>
</tr>
<tr class="">
<td><a href="/q?s=%5EIXIC">Nasdaq</a></td>
<td class="idx"><span id="yfs_l10_^ixic">3,600.08</span></td>
<td class="cu"><span id="yfs_c10_^ixic"> <b style="color:#000000;">0.00</b></span><span id="yfs_p20_^ixic"><b style="color:#000000;"> (0.00%)</b></span></td>
</tr>
<tr class="e">
<td><a href="/q?s=%5EGSPC">S&amp;P 500</a></td>
<td class="idx"><span id="yfs_l10_^gspc">1,680.19</span></td>
<td class="cu"><span id="yfs_c10_^gspc"><img width="10" height="14" style="margin-right:-2px;" border="0" src="http://l.yimg.com/os/mit/media/m/base/images/transparent-1093278.png" class="pos_arrow" alt="Up"> <b style="color:#008800;">5.17</b></span><span id="yfs_p20_^gspc"><b style="color:#008800;"> (0.31%)</b></span></td>
</tr>
<tr class="">
<td><a href="/q?s=%5ETNX">10-Yr Bond</a></td>
<td class="idx"><span id="yfs_l10_^tnx">2.60</span>%
</td>
<td class="idx"><span id="yfs_c10_^tnx"><img width="10" height="14" style="margin-right:-2px;" border="0" src="http://l.yimg.com/os/mit/media/m/base/images/transparent-1093278.png" class="pos_arrow" alt="Up"> <b style="color:#008800;">0.03</b></span></td>
</tr>
<tr class="e">
<td colspan="2"><a href="/q?s=%5ETV.N">NYSE Volume</a></td>
<td class="idx"><span id="yfs_lt0_^tv.n">3,315,714,000.00</span></td>
</tr>
<tr class="">
<td colspan="2"><a href="/q?s=%5ETV.O">Nasdaq Volume...</a></td>
<td class="idx"><span id="yfs_lt0_^tv.o">1,578,376,875.00</span></td>
</tr>
</tbody>
</table>
<div id="ma">
<strong>Indices:</strong> <a href="http://us.rd.yahoo.com/finance/finhome/usindices/*http://finance.yahoo.com/indices?e=dow_jones">US</a> - <a href="http://us.rd.yahoo.com/finance/finhome/worldindices/*http://finance.yahoo.com/intlindices?e=americas">World</a> | <a href="http://us.rd.yahoo.com/finance/finhome/mostactives/*http://finance.yahoo.com/actives?e=o">Most Actives</a>
</div>
</div>
</div>
<div class="tba"><h3>Advances &amp; Declines</h3></div>
<div class="ob">
<table id="yfimktsumm" border="0" cellspacing="0" cellpadding="0" class="rts">
<thead>
<th class="first">&nbsp;</th>
<th>NYSE</th>
<th>NASDAQ</th>
</thead>
<tbody>
<tr class="e">
<td class="first">Advances</td>
<td align="right">1,962
(48%)
</td>
<td align="right">1,322
(53%)
</td>
</tr>
<tr>
<td class="first">Declines</td>
<td align="right">2,029
(49%)
</td>
<td align="right">1,068
(43%)
</td>
</tr>
<tr class="e">
<td class="first">Unchanged</td>
<td align="right">126
(3%)
</td>
<td align="right">115
(5%)
</td>
</tr>
<tr>
<td class="first">Up Vol*</td>
<td align="right">1,822
(55%)
</td>
<td align="right">918
(58%)
</td>
</tr>
<tr class="e">
<td class="first">Down Vol*</td>
<td align="right">1,417
(43%)
</td>
<td align="right">636
(40%)
</td>
</tr>
<tr>
<td class="first">Unch. Vol*</td>
<td align="right">76
(2%)
</td>
<td align="right">24
(2%)
</td>
</tr>
<tr class="e">
<td class="first">New Hi's</td>
<td align="right">355</td>
<td align="right">337</td>
</tr>
<tr>
<td class="first">New Lo's</td>
<td align="right">110</td>
<td align="right">14</td>
</tr>
</tbody>
</table>
<div id="advdec_ftr" class="clear">
<div>
<sup>*</sup>in millions</div>
<div class="more"><a href="/m0">more...</a></div>
</div>
</div>
<div id="yfitn_last">
<div class="tba"><h3>Most Actives</h3></div>
<div class="ob oblast clear">
<table id="yfimktsumm" border="0" cellspacing="0" cellpadding="0" class="rts">
<thead>
...
`
start := strings.Index(html, `<table id="yfimktsumm"`)
finish := strings.LastIndex(html, `<table id="yfimktsumm"`)
@ -156,15 +291,15 @@ func main() {
const any = `\s*<.+?>`
const some = `<.+?`
const space = `\s*`
const arrow = `"(Up|Down)">\s*`
const color = `#([08c]{6});">\s*`
const price = `([\d\.,]+)`
const percent = `\(([\d\.,%]+)\)`
regex := []string{
"(Dow)", any, price, some, arrow, any, price, some, percent, any,
"(Nasdaq)", any, price, some, arrow, any, price, some, percent, any,
"(S&P 500)", any, price, some, arrow, any, price, some, percent, any,
"(Advances)", any, price, space, percent, any, price, space, percent, any,
"(Dow)", any, price, some, color, price, some, percent, any,
"(Nasdaq)", any, price, some, color, price, some, percent, any,
"(S&P 500)", any, price, some, color, price, some, percent, any,
"(Advances)", any, price, space, percent, any, price, space, percent, any,
"(Declines)", any, price, space, percent, any, price, space, percent, any,
"(Unchanged)", any, price, space, percent, any, price, space, percent, any,
"(New Hi's)", any, price, any, price, any,
@ -182,7 +317,7 @@ func main() {
} else {
println("No matches")
}
return
m := Market{
Dow: make(map[string]string),
Nasdaq: make(map[string]string),

21
lib/format.go
Unescape View File

@ -13,9 +13,24 @@ import (
//-----------------------------------------------------------------------------
func FormatMarket(m Market) string {
markup := `{{.Dow.name}}: {{.Dow.change}} ({{.Dow.percent}}) at {{.Dow.latest}}, `
markup += `{{.Sp500.name}}: {{.Sp500.change}} ({{.Sp500.percent}}) at {{.Sp500.latest}}, `
markup += `{{.Nasdaq.name}}: {{.Nasdaq.change}} ({{.Nasdaq.percent}}) at {{.Nasdaq.latest}}`
markup := `{{.Dow.name}}: `
if m.Dow[`change`][0:1] != "-" {
markup += `<green>{{.Dow.change}} ({{.Dow.percent}})</green> at {{.Dow.latest}}, `
} else {
markup += `"{{.Dow.change}}" ({{.Dow.percent}}) at {{.Dow.latest}}, `
}
markup += `{{.Sp500.name}}: `
if m.Sp500[`change`][0:1] != "-" {
markup += `<green>{{.Sp500.change}} ({{.Sp500.percent}})</green> at {{.Sp500.latest}}, `
} else {
markup += `{{.Sp500.change}} ({{.Sp500.percent}}) at {{.Sp500.latest}}, `
}
markup += `{{.Nasdaq.name}}: `
if m.Nasdaq[`change`][0:1] != "-" {
markup += `<green>{{.Nasdaq.change}} ({{.Nasdaq.percent}})</green> at {{.Nasdaq.latest}}`
} else {
markup += `{{.Nasdaq.change}} ({{.Nasdaq.percent}}) at {{.Nasdaq.latest}}`
}
markup += "\n"
markup += `{{.Advances.name}}: {{.Advances.nyse}} ({{.Advances.nysep}}) on NYSE and {{.Advances.nasdaq}} ({{.Advances.nasdaqp}}) on Nasdaq. `
markup += `{{.Declines.name}}: {{.Declines.nyse}} ({{.Declines.nysep}}) on NYSE and {{.Declines.nasdaq}} ({{.Declines.nasdaqp}}) on Nasdaq`

34
lib/yahoo_market.go
Unescape View File

@ -52,14 +52,14 @@ func extract(snippet []byte) Market {
const any = `\s*<.+?>`
const some = `<.+?`
const space = `\s*`
const arrow = `"(Up|Down)">\s*`
const color = `#([08c]{6});">\s*`
const price = `([\d\.,]+)`
const percent = `\(([\d\.,%]+)\)`
regex := []string{
"(Dow)", any, price, some, arrow, any, price, some, percent, any,
"(Nasdaq)", any, price, /*some, arrow,*/ any, price, some, percent, any,
"(S&P 500)", any, price, some, arrow, any, price, some, percent, any,
"(Dow)", any, price, some, color, price, some, percent, any,
"(Nasdaq)", any, price, some, color, price, some, percent, any,
"(S&P 500)", any, price, some, color, price, some, percent, any,
"(Advances)", any, price, space, percent, any, price, space, percent, any,
"(Declines)", any, price, space, percent, any, price, space, percent, any,
"(Unchanged)", any, price, space, percent, any, price, space, percent, any,
@ -89,36 +89,48 @@ func extract(snippet []byte) Market {
Highs: make(map[string]string),
Lows: make(map[string]string),
}
return m
m.Dow[`name`] = matches[0][1]
m.Dow[`latest`] = matches[0][2]
m.Dow[`change`] = matches[0][4]
if matches[0][3] == "Up" {
switch matches[0][3] {
case "008800":
m.Dow[`change`] = "+" + matches[0][4]
m.Dow[`percent`] = "+" + matches[0][5]
} else {
case "cc0000":
m.Dow[`change`] = "-" + matches[0][4]
m.Dow[`percent`] = "-" + matches[0][5]
default:
m.Dow[`change`] = matches[0][4]
m.Dow[`percent`] = matches[0][5]
}
m.Nasdaq[`name`] = matches[0][6]
m.Nasdaq[`latest`] = matches[0][7]
if matches[0][8] == "Up" {
switch matches[0][8] {
case "008800":
m.Nasdaq[`change`] = "+" + matches[0][9]
m.Nasdaq[`percent`] = "+" + matches[0][10]
} else {
case "cc0000":
m.Nasdaq[`change`] = "-" + matches[0][9]
m.Nasdaq[`percent`] = "-" + matches[0][10]
default:
m.Nasdaq[`change`] = matches[0][9]
m.Nasdaq[`percent`] = matches[0][10]
}
m.Sp500[`name`] = matches[0][11]
m.Sp500[`latest`] = matches[0][12]
if matches[0][13] == "Up" {
switch matches[0][13] {
case "008800":
m.Sp500[`change`] = "+" + matches[0][14]
m.Sp500[`percent`] = "+" + matches[0][15]
} else {
case "cc0000":
m.Sp500[`change`] = "-" + matches[0][14]
m.Sp500[`percent`] = "-" + matches[0][15]
default:
m.Sp500[`change`] = matches[0][14]
m.Sp500[`percent`] = matches[0][15]
}
m.Advances[`name`] = matches[0][16]

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