lessfilter-pygmentize/.lessfilter

#!/bin/bash
# uses Pygments v2.14.0 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
                .1p|.3pm|.6pl|.6pm|.ABAP|.ASM|.BAS|.C|.CBL|.COB|.CPP|.CPY|.F|\
                .F03|.F90|.G|.H|.ICON|.MIPS|.P|.PRG|.R|.Rd|.Rout|.S|.SAS|.VBS|\
                .[1-9]|.[gs]sed|.abap|.abnf|.ada|.adb|.adl|.adlf|.adls|.adlx|\
                .ado|.ads|.aes|.agda|.aheui|.ahk|.ahkl|.aj|.alg|.als|.ans|\
                .apl|.aplc|.aplf|.apli|.apln|.aplo|.applescript|.arexx|.art|\
                .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|.be|.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|.cljc|\
                .cljs|.cls|.cmake|.cmd|.cml|.cob|.coffee|.comal|.cp|.cpl|.cpp|\
                .cpp-objdump|.cps|.cpsa|.cpy|.cr|.crmsh|.croc|.cry|.cs|.csd|\
                .csh|.css|.css.in|.css.j2|.css.jinja2|.cssul4|.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|.elpi|.eml|.eps|.erl|\
                .erl-sh|.es|.escript|.evoque|.ex|.exec|.exheres-0|.exlib|.exs|\
                .exw|.ezt|.f|.f03|.f90|.factor|.fan|.fancypack|.fc|.feature|\
                .fhtml|.fif|.fish|.flo|.flx|.flxh|.fnl|.frag|.frt|.fs|.fsi|\
                .fst|.fsti|.fsx|.fun|.func|.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|.htm.j2|.htm.jinja2|\
                .html|.html.j2|.html.jinja2|.htmlul4|.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|.jp|.js|.js.in|.js.j2|\
                .js.jinja2|.jsgf|.jslt|.jsm|.json|.jsonld|.jsonnet|.jsp|\
                .jsul4|.juttle|.jy|.k|.kal|.kid|.kif|.kk|.kki|.kmsg|.kn|.ksh|\
                .kt|.kts|.lagda|.lasso|.lasso[89]|.lcry|.lean|.leex|.less|\
                .lgt|.lhs|.libsonnet|.lid|.lidr|.liquid|.lisp|.ll|.load|\
                .logtalk|.lpad|.ls|.lsl|.lsp|.lua|.ly|.m|.m2|.ma|.mac|.mak|\
                .man|.mao|.maql|.markdown|.mask|.max|.mc|.mcfunction|\
                .mcschema|.md|.mhtml|.mi|.mips|.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|.nasm|.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|.portugol|.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|.pyi|\
                .pypylog|.pytb|.pyul4|.pyw|.pyx|.q|.qbs|.qml|.qvs|.qvto|.qvw|\
                .r|.r3|.rake|.raku|.rakudoc|.rakumod|.rakutest|.rb|.rbw|.rbx|\
                .re|.reb|.red|.reds|.reg|.rei|.resource|.rest|.rex|.rexx|\
                .rhtml|.ride|.rita|.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|.snbt|\
                .snobol|.socket|.sol|.sp|.sparql|.spec|.spice|.spt|.sql|\
                .sql.j2|.sql.jinja2|.sqlite3-console|.ss|.ssp|.st|.stan|.sv|\
                .svh|.swap|.swg|.swift|.t|.tac|.tal|.tap|.target|.tasm|.tcl|\
                .tcsh|.tea|.teal|.tex|.tf|.thrift|.thy|.ti|.tid|.timer|.tlb|\
                .tmpl|.tnt|.toc|.todotxt|.toml|.tpl|.tpp|.treetop|.ts|.tst|\
                .tt|.ttl|.twig|.txt|.typoscript|.u|.u1|.u2|.udo|.ul4|.usd|\
                .usda|.v|.vala|.vapi|.vark|.vb|.vbs|.vcl|.vert|.vhd|.vhdl|\
                .vim|.vm|.vpr|.wast|.wat|.wdiff|.webidl|.weechatlog|.whiley|\
                .wlua|.wren|.wsdl|.wsf|.x|.x10|.x[bp]m|.xhtml|.xhtml.j2|\
                .xhtml.jinja2|.xi|.xm|.xmi|.xml|.xml.j2|.xml.jinja2|.xmlul4|\
                .xpl|.xq|.xql|.xqm|.xquery|.xqy|.xsd|.xsl|.xslt|.xtend|.xtm|\
                .xul.in|.yaml|.yaml.j2|.yaml.jinja2|.yang|.yml|.yml.j2|\
                .yml.jinja2|.zeek|.zep|.zig|.zsh|Config.in*|Spec.hs)
                    # 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" " \
'{ if (/env/) { print $2 } else { sub( /.*\//, ""); print $1;} }')
                    case "$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