06-29-2018
I may be in the minority here, but I'm not sure I like it - yet. It's a good idea, and the line numbering is especially helpful, but the feature needs to be thought through.
This disrupts our habitual use of [color=red] to highlight important changes, for one thing. Either it needs to be opt-in a la [code=bash] or the syntax highlighting colors should be more subdued.
And unless it's done very well, syntax highlighting can be misleading. The one thing which really needs to work perfectly here, the detection of lines and strings, has done a hash job. It looks great, until you think about it -- it's highlighting "shell code" inside quoted and unquoted string literals! It's finding strings inside strings! I really don't want to explain to new programmers why I'm right and the website is wrong.
Last edited by Corona688; 06-29-2018 at 02:58 PM..
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LEARN ABOUT DEBIAN
arch::filehighlighter
Arch::FileHighlighter(3pm) User Contributed Perl Documentation Arch::FileHighlighter(3pm)
NAME
Arch::FileHighlighter - syntax-highlight file's content using markup
SYNOPSIS
use Arch::FileHighlighter;
my $fh = Arch::FileHighlighter->new(
[ 'internal(pm+c)', 'none(txt), 'enscript', 'internal', ]
);
my $html_ref = $fh->highlight($0);
print $$html_ref;
print ${$fh->highlight('file.c', '/* some code */')};
DESCRIPTION
This class processes file contents and produces syntax highlighting markup. This may be used together with css that defines exact text
colors and faces.
The default is to use the builtin "internal" processing, that is pretty poor; only very basic file types and syntax constructions are
supported. It is suggested to configure and use the external "enscript" utility. GNU enscript understands quite a rich number of file
types and produces a useful syntax highlighting. "enscript" filter is used by default if /usr/bin/enscript is found.
It is possible to configure different filters ("none", "internal", "enscript") depending on file name extension. In any case the resulting
markup is always unified, i.e. all special characters are HTML-encoded using SGML entities, and the markup that looks like
<spanclass="syntax_foo">bar</span> is used.
METHODS
The following methods are available:
new, instance, highlight.
new [filters]
Create a new instance of Arch::FileHighlighter.
filters is arrayref of strings of the form filter(ext1+ext2+...)", where filter is one of "enscript", "internal" or "none". Special
extension ":xml" is a shortcut for "html+htm+sgml+xml+wml+rss+glade". The filters optionally constrained by file extensions are probed
sequentially and the first passed one is used.
Note that if enscript is configured in the sequence, but is not installed, then its probing may print a warning to stderr. The
"enscript" filter is handled a bit specially, it may take parameters "mono" (less colors) and "asis" instead of the file extensions. If
enscript returns html without any tags, then the filter is handled as failed, unless "asis" is given.
By default, filters is [ 'internal' ], or [ 'enscript', 'internal' ] depending on presense of '/usr/bin/enscript'.
instance [filters]
Alternative constructor. Return the last created instance of Arch::FileHighlighter or create a new one.
The purpose of this alternative constructor is to allow the singleton behaviour as well as certain Aspect Oriented Programming
practices.
highlight filename [content]
Process filename using configured filters (as described in the constructor) and produce the file content with embeded <span
class="class">...</span> markup. class is one of:
syntax_keyword
syntax_builtin
syntax_comment
syntax_special
syntax_funcdef
syntax_vartype
syntax_string
syntax_constant
If content is provided (either string or reference to string), it is used, otherwise the content of filename is loaded.
BUGS
Awaiting for your reports.
AUTHORS
Mikhael Goikhman (migo@homemail.com--Perl-GPL/arch-perl--devel).
SEE ALSO
For more information, see enscript, Arch::Util, Syntax::Highlight::Perl.
perl v5.10.1 2005-10-23 Arch::FileHighlighter(3pm)