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effective_go: use html/template instead of text/template
Should have done this a long time ago. Fixes #3811. R=golang-dev, adg, rsc CC=golang-dev https://golang.org/cl/6488120
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@ -2992,9 +2992,9 @@ server; it blocks while the server runs.
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executes the template on the data in the form value named <code>s</code>.
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</p>
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<p>
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The template package is powerful;
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The template package <code>html/template</code> is powerful;
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this program just touches on its capabilities.
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In essence, it rewrites a piece of text on the fly by substituting elements derived
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In essence, it rewrites a piece of HTML text on the fly by substituting elements derived
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from data items passed to <code>templ.Execute</code>, in this case the
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form value.
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Within the template text (<code>templateStr</code>),
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@ -3005,13 +3005,14 @@ is non-empty.
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That is, when the string is empty, this piece of the template is suppressed.
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</p>
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<p>
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The snippet <code>{{html "{{urlquery .}}"}}</code> says to process the data with the function
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<code>urlquery</code>, which sanitizes the query string
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for safe display on the web page.
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The two snippets <code>{{html "{{.}}"}}</code> say to show the data presented to
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the template—the query string—on the web page.
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The HTML template package automatically provides appropriate escaping so the
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text is safe to display.
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</p>
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<p>
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The rest of the template string is just the HTML to show when the page loads.
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If this is too quick an explanation, see the <a href="/pkg/text/template/">documentation</a>
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If this is too quick an explanation, see the <a href="/pkg/html/template/">documentation</a>
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for the template package for a more thorough discussion.
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</p>
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<p>
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@ -8,9 +8,9 @@ package main
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import (
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"flag"
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"html/template"
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"log"
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"net/http"
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"text/template"
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)
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var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
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@ -37,9 +37,9 @@ const templateStr = `
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</head>
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<body>
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{{if .}}
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<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{urlquery .}}" />
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<img src="http://chart.apis.google.com/chart?chs=300x300&cht=qr&choe=UTF-8&chl={{.}}" />
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<br>
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{{html .}}
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{{.}}
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<br>
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<br>
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{{end}}
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