lessfilter-pygmentize/.lessfilter

#!/bin/bash
# uses Pygments v2.10.0 for syntax highlighting on applicable file types
for path in "$@"; do
    # match by known filenames
    filename=$(basename "$path")
    case "$filename" in
        .bash_aliases|.bash_environment|.bash_login|.bash_logout|\
        .bash_profile|.cshdirs|.cshrc|.profile|.tcshrc|.zlogin|.zlogout|\
        .zprofile|bash.bashrc|csh.cshrc|csh.login|csh.logout|ksh.kshrc|zlogin|\
        zlogout|zprofile)
            # shell lexer
            pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" -l sh "$path"
            ;;
        .Renviron|.Rhistory|.Rprofile|.SRCINFO|.bashrc|.editorconfig|.exrc|\
        .gvimrc|.htaccess|.kshrc|.vimrc|.zshrc|BUCK|BUILD|BUILD.bazel|\
        CMakeLists.txt|Dockerfile|GNUmakefile|Gemfile|Kconfig*|Makefile|\
        Makefile.*|PKGBUILD|Pipfile|Pipfile.lock|Procfile|Rakefile|SConscript|\
        SConstruct|Singularity|Vagrantfile|WORKSPACE|apache.conf|apache2.conf|\
        autodelegate|autohandler|bashrc|control|dhandler|exrc|external.in*|\
        gvimrc|iddsa|idecdsa|idecdsask|ided25519|ided25519sk|idrsa|kshrc|\
        lighttpd.conf|makefile|meson.build|mesonoptions.txt|nginx.conf|\
        pacman.conf|poetry.lock|sources.list|squid.conf|standard-modules.in|\
        termcap|termcap.src|terminfo|terminfo.src|todo.txt|vimrc|xorg.conf|\
        zshrc)
            # filename recognized
            pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" "$path"
            ;;
        *)
            ext=$([[ "$filename" = *.* ]] && echo ".${filename##*.}" || echo '')
            case "$ext" in
                .6pl|.6pm|.ABAP|.ASM|.BAS|.C|.CBL|.COB|.CPP|.CPY|.F|.F03|.F90|\
                .G|.H|.ICON|.PRG|.R|.Rd|.Rout|.S|.SAS|.VBS|.[1234567]|\
                .[gs]sed|.abap|.abnf|.ada|.adb|.adl|.adlf|.adls|.adlx|.ado|\
                .ads|.aes|.agda|.aheui|.ahk|.ahkl|.aj|.als|.ans|.apl|.aplc|\
                .aplf|.apli|.apln|.aplo|.applescript|.arexx|.arw|.as|.asax|\
                .asc|.ascx|.ashx|.asm|.asmx|.aspx|.asy|.at|.au3|.aug|\
                .automount|.aux|.awk|.axd|.b|.bare|.bas|.bash|.bat|.bb|.bbc|\
                .bc|.befunge|.bf|.bib|.bmx|.bnf|.boa|.boo|.bpl|.bro|.bst|.bug|\
                .bzl|.c|.c++|.c++-objdump|.c-objdump|.cadl|.camkes|.capnp|\
                .cbl|.cc|.cddl|.cdf|.cdl|.ceylon|.cf|.cfc|.cfg|.cfm|.cfml|\
                .chai|.chpl|.ci|.cirru|.cjs|.cl|.clay|.clj|.cljs|.cls|.cmake|\
                .cmd|.cob|.coffee|.cp|.cpp|.cpp-objdump|.cps|.cpsa|.cpy|.cr|\
                .crmsh|.croc|.cry|.cs|.csd|.csh|.css|.css.in|.cu|.cuh|.cw|\
                .cxx|.cxx-objdump|.cyp|.cypher|.d|.d-objdump|.darcspatch|\
                .dart|.dasm|.dasm16|.dcl|.decls|.def|.device|.dg|.di|.diff|\
                .dmesg|.do|.docker|.dot|.dpatch|.dpr|.dtd|.dts|.dtsi|.duby|\
                .duel|.dyalog|.dyl|.dylan|.dylan-console|.e|.ebnf|.ebuild|.ec|\
                .ecl|.eclass|.edp|.eex|.eg|.eh|.el|.elm|.eml|.eps|.erl|\
                .erl-sh|.es|.escript|.evoque|.ex|.exec|.exheres-0|.exlib|.exs|\
                .ezt|.f|.f03|.f90|.factor|.fan|.fancypack|.feature|.fhtml|\
                .fish|.flo|.flx|.flxh|.fnl|.frag|.frt|.fs|.fsi|.fst|.fsti|\
                .fun|.fut|.fy|.g|.gap|.gcode|.gd|.gdc|.gemspec|.geo|.gi|.go|\
                .golo|.gradle|.graph|.groovy|.gs|.gsp|.gsql|.gst|.gsx|.gv|.h|\
                .h++|.haml|.handlebars|.hbs|.hdp|.hh|.hlsl|.hlsli|.hpp|.hrl|\
                .hs|.hsail|.htm|.html|.hx|.hxml|.hxsl|.hxx|.hy|.hyb|.i|.i6t|\
                .i7x|.icl|.icn|.icon|.idc|.idl|.idl4|.idr|.ijs|.ik|.inc|.inf|\
                .ini|.ino|.instances|.intr|.io|.ipf|.isa|.j|.jade|.jag|.java|\
                .jbst|.jcl|.jl|.js|.js.in|.jsgf|.jslt|.jsm|.json|.jsonld|.jsp|\
                .juttle|.jy|.kal|.kid|.kif|.kk|.kki|.kmsg|.kn|.ksh|.kt|.kts|\
                .lagda|.lasso|.lasso[89]|.lcry|.lean|.leex|.less|.lgt|.lhs|\
                .lid|.lidr|.liquid|.lisp|.ll|.load|.logtalk|.ls|.lsl|.lsp|\
                .lua|.ly|.m|.ma|.mac|.mak|.man|.mao|.maql|.markdown|.mask|\
                .max|.mc|.md|.mhtml|.mi|.mir|.mjs|.mk|.ml|.mli|.mll|.mly|.mm|\
                .mo|.mod|.monkey|.moo|.moon|.mos|.mount|.mq4|.mq5|.mqh|.ms|\
                .msc|.mt|.mu|.mxml|.myt|.n|.nb|.nbp|.nc|.ncl|.ng2|.ni|.nim|\
                .nimrod|.nit|.nix|.nl|.nqp|.ns2|.nsh|.nsi|.nt|.objdump|\
                .objdump-intel|.odin|.ooc|.opa|.orc|.p|.p6|.p6l|.p6m|.pan|\
                .pas|.patch|.path|.pc|.pcmk|.peg|.pem|.perl|.php|.php[345]|\
                .phtml|.pidl|.pig|.pike|.pl|.pl6|.plot|.plt|.pm|.pm6|.pmod|\
                .po|.pony|.pot|.pov|.pp|.praat|.prg|.pro|.proc|.prolog|\
                .promql|.properties|.proto|.ps|.ps1|.psc|.psi|.psl|.psm1|\
                .ptls|.pug|.pwn|.pxd|.pxi|.py|.py2tb|.py3tb|.pypylog|.pytb|\
                .pyw|.pyx|.qbs|.qml|.qvto|.r|.r3|.rake|.raku|.rakudoc|\
                .rakumod|.rakutest|.rb|.rbw|.rbx|.re|.reb|.red|.reds|.reg|\
                .rei|.rest|.rex|.rexx|.rhtml|.ride|.rkt|.rktd|.rktl|.rl|.rnc|\
                .robot|.rpf|.rq|.rql|.rs|.rs.in|.rsl|.rss|.rst|.rts|.run|.rvt|\
                .rx|.s|.sage|.sarl|.sas|.sass|.savi|.sbl|.sc|.scala|.scaml|\
                .scd|.scdoc|.sce|.sci|.scm|.sco|.scope|.scss|.sed|.service|\
                .sgf|.sh|.sh-session|.shell-session|.shen|.shex|.sieve|.sig|\
                .sil|.siv|.sl|.sla|.slice|.slim|.sls|.smali|.smithy|.sml|.smv|\
                .snobol|.socket|.sol|.sp|.sparql|.spec|.spt|.sql|\
                .sqlite3-console|.ss|.ssp|.st|.stan|.sv|.svh|.swap|.swg|\
                .swift|.t|.tac|.tap|.target|.tasm|.tcl|.tcsh|.tea|.teal|.tex|\
                .tf|.thrift|.thy|.ti|.tid|.timer|.tmpl|.tnt|.toc|.todotxt|\
                .toml|.tpl|.treetop|.ts|.tst|.tt|.ttl|.twig|.txt|.typoscript|\
                .u|.u1|.u2|.udo|.usd|.usda|.v|.vala|.vapi|.vark|.vb|.vbs|.vcl|\
                .vert|.vhd|.vhdl|.vim|.vm|.vpr|.wast|.wat|.wdiff|.webidl|\
                .weechatlog|.whiley|.wlua|.wsdl|.wsf|.x|.x10|.xhtml|.xi|.xm|\
                .xmi|.xml|.xpl|.xq|.xql|.xqm|.xquery|.xqy|.xsd|.xsl|.xslt|\
                .xtend|.xtm|.xul.in|.yaml|.yang|.yml|.zeek|.zep|.zig|.zsh|\
                Config.in*)
                    # extension recognized
                    pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" "$path"
                    ;;
                *)
                    # unrecognized filename/extension
                    # attempt to parse the lexer from the shebang if it exists
                    lexer=$(head -n 1 "$path" |grep "^#\!" |awk -F" " \
'match($1, /\/(\w*)$/, a) {if (a[1]!="env") {print a[1]} else {print $2}}')
                    case "$lexer" in
                        node|nodejs)
                            # workaround for lack of Node.js lexer alias
                            pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" \
                                -l js "$path"
                            ;;
                        "")
                            # fall-back to plain text
                            exit 1
                            ;;
                        *)
                            # use lexer alias parsed from the shebang
                            pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" \
                                -l "$lexer" "$path"
                            ;;
                    esac
                    ;;
            esac
            ;;
    esac
done
exit 0