AWK to replace HTML tag with another and keep text-CodePudding

I am looking for a way to replace a HTML tag with another, but keep the text.

I have a big HTML file, which contains:

<span >fork</span>

I want to replace <span> tag with <strong> tag:

<strong>fork</strong>

Tool doesn't really matter, but I am looking for a CLI way to do it.

I am not looking for a HTML processor, because input is a text file with some HTML code in it (not a clean/valid HTML) and I am manually working with the output (copy, modify, use later in its final place). I just want to save some time with the replace.

CodePudding user response：

Consider using Python and a tool like BeautifulSoup to handle HTML. Trying to parse HTML with other tools like sed or awk can lead to terrible places.

As an example:

from bs4 import BeautifulSoup
soup = BeautifulSoup('<li><span >fork</span>')
for spanele in soup.findAll('span'):
    spanele.name = 'p'
html_string = str(soup)
print(html_string);

That's lightweight and pretty simple and the html is handled properly with a library that is specifically built to parse it.

CodePudding user response：

Don't use AWK for processing HTML files. If you can turn your HTML file into an XHTML file, you can use xsltproc for an XML transformation as follows:

trans.xsl file:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
  version="1.0"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output method="xml" indent="yes" encoding="utf-8"/>

  <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="span[@class='desc e-font-family-cond']">
    <strong><xsl:apply-templates/></strong>
  </xsl:template>

</xsl:stylesheet>

CLI command for invoking xsltproc, which has to be installed, obviously:

xsltproc trans.xsl file.html

The standard output of this command is the corrected HTML file as you want to have it.

CodePudding user response：

Using sed:

sed 's,<\(\/\)\?span\(\s\)\?,<\1strong\2,g'

$ echo '<span >fork</span>' | sed 's,<\(\/\)\?span\(\s\)\?,<\1strong\2,g'
<strong >fork</strong>