HTML
![[]](./bin/ylinux.gif)
Conversions
Converting a html file to plain text
The following shell script will convert any html file to plain text and maintain the links as a list at the end of the text file. It assumes that the *.htm or *html files to be converted are in the directory where the script (h2t) is executed.
#!/bin/sh
# h2t, convert all htm and html files of a directory to text
for file in `ls *.htm`
do
new=`basename $file htm`
lynx -dump $file > ${new}txt
done
#####
for file in `ls *.html`
do
new=`basename $file html`
lynx -dump $file > ${new}txt
done
|
I did not send the error messages from ls to /dev/null, so if a file is not found, you will get a screen message "file not found". To have all the internal links referenced by a list at the end of the text file, you will need to set Lynx up correctly.
Converting a plain text file to html
This is a sed script. If the text is reasonably formatted, a fully useable html file will result. As set up below the script (t2h) will do the following..
- substitute the word " at " for any " at " signs
- remove any 8-bit characters
- reduce lines with tabs and blanks to no space at all
- remove duplicate blank lines (leaving one between parapgraphs)
- place /UL P on remaining blank lines (paragraphing)
- remove the line breaks after the /UL P (ends up on next line)
- indent any Paragraphs (not lines) starting with a quote mark (and removes leading tabs and spaces)
- introduce a BR tag on any line starting with a hyphen (and removes leading tabs and spaces)
- convert http://URL to a link
#!/bin/sh
# t2h {$1} html-ize a text file and save as foo.htm
NL="
"
cat $1 \
| sed -e 's/ at / at /g' \
| sed -e 's/[[:cntrl:]]/ /g'\
| sed -e 's/^[[:space:]]*$//g' \
| sed -e '/^$/{'"$NL"'N'"$NL"'/^\n$/D'"$NL"'}' \
| sed -e 's/^$/<\/UL><P>/g' \
| sed -e '/<P>$/{'"$NL"'N'"$NL"'s/\n//'"$NL"'}'\
| sed -e 's/<P>[[:space:]]*"/<P><UL>"/' \
| sed -e 's/^[[:space:]]*-/<BR> -/g' \
| sed -e 's/http:\/\/[[:graph:]\.\/]*/<A HREF="&">[&]<\/A> /g'\
> foo.htm
|
Obviously the HEAD section of the html file, or the enclosing BODY and HTML tags are not written (they are also not required under HTML-4). These could be added with an additional line to the script, like..
cat header foo.htm tail > bar.htm
Additionally, you could include other HTML tags within the original text - as long as you do not use something which the sed script would alter.
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