A practical example of parsing a specific HTML section and applying transformations only to the elements within it.
ID: 940
using uCalcSoftware;
var uc = new uCalc();
// Note the change in section/div/h2
var t = uc.NewTransformer();
// The parent rule will find the <section> block and make its content available to a local transformer.
// StatementSensitive(false) is needed so the multiline content is captured.
var parentRule = t.Pattern("<section>{body}</section>");
parentRule.StatementSensitive = false;
// Get the local transformer for the <section> block.
var section_t = parentRule.LocalTransformer;
// These rules will ONLY run on the content inside the <section> tag.
section_t.FromTo("<h2>{text}</h2>", "<h1>====> {@Eval: UCase(text)} <====</h1>");
section_t.FromTo("<p>{text}</p>", "<p>SELECTED: {text}</p>");
var sourceHtml =
"""
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h2>Article Two</h2>
<p>This one IS inside the section.</p>
</div>
</section>
""";
t.Text = sourceHtml;
t.Transform();
Console.WriteLine(t.Text);
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h1>====> ARTICLE TWO <====</h1>
<p>SELECTED: This one IS inside the section.</p>
</div>
</section>
#include <iostream>
#include "uCalc.h"
using namespace std;
using namespace uCalcSoftware;
int main() {
uCalc uc;
// Note the change in section/div/h2
auto t = uc.NewTransformer();
// The parent rule will find the <section> block and make its content available to a local transformer.
// StatementSensitive(false) is needed so the multiline content is captured.
auto parentRule = t.Pattern("<section>{body}</section>");
parentRule.StatementSensitive(false);
// Get the local transformer for the <section> block.
auto section_t = parentRule.LocalTransformer();
// These rules will ONLY run on the content inside the <section> tag.
section_t.FromTo("<h2>{text}</h2>", "<h1>====> {@Eval: UCase(text)} <====</h1>");
section_t.FromTo("<p>{text}</p>", "<p>SELECTED: {text}</p>");
auto sourceHtml =
R"(
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h2>Article Two</h2>
<p>This one IS inside the section.</p>
</div>
</section>
)";
t.Text(sourceHtml);
t.Transform();
cout << t.Text() << endl;
}
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h1>====> ARTICLE TWO <====</h1>
<p>SELECTED: This one IS inside the section.</p>
</div>
</section>
Imports System
Imports uCalcSoftware
Public Module Program
Public Sub Main()
Dim uc As New uCalc()
'// Note the change in section/div/h2
Dim t = uc.NewTransformer()
'// The parent rule will find the <section> block and make its content available to a local transformer.
'// StatementSensitive(false) is needed so the multiline content is captured.
Dim parentRule = t.Pattern("<section>{body}</section>")
parentRule.StatementSensitive = false
'// Get the local transformer for the <section> block.
Dim section_t = parentRule.LocalTransformer
'// These rules will ONLY run on the content inside the <section> tag.
section_t.FromTo("<h2>{text}</h2>", "<h1>====> {@Eval: UCase(text)} <====</h1>")
section_t.FromTo("<p>{text}</p>", "<p>SELECTED: {text}</p>")
Dim sourceHtml =
"
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h2>Article Two</h2>
<p>This one IS inside the section.</p>
</div>
</section>
"
t.Text = sourceHtml
t.Transform()
Console.WriteLine(t.Text)
End Sub
End Module
<div>
<h2>Article One</h2>
<p>This is NOT in the section.</p>
</div>
<section>
<div>
<h1>====> ARTICLE TWO <====</h1>
<p>SELECTED: This one IS inside the section.</p>
</div>
</section>