.lessfilter

#!/bin/bash
# uses Pygments v2.19.2 for syntax highlighting on applicable file types
for path in "$@"; do
    # match by known filenames
    filename=$(basename "$path")
    case "$filename" in
        .bash_aliases|.bash_completion|.bash_environment|.bash_history|\
        .bash_login|.bash_logout|.bash_profile|.cshdirs|.cshrc|.profile|\
        .tcshrc|.zlogin|.zlogout|.zprofile|.zshenv|bash.bashrc|csh.cshrc|\
        csh.login|csh.logout|ksh.kshrc.kshrc|zlogin|zlogout|zprofile)
            # shell lexer
            pygmentize -f 256 -O style="$PYGMENTIZE_STYLE" -l sh "$path"
            ;;
        *.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|*.asn1|*.aspx|*.asy|*.at|*.au3|*.aug|*.automount|*.aux|\
        *.awk|*.axd|*.b|*.bare|*.bas|*.bash|*.bat|*.bb|*.bbc|*.bc|*.be|\
        *.befunge|*.bf|*.bib|*.blp|*.bmx|*.bnf|*.boa|*.boo|*.bpl|*.bqn|*.bro|\
        *.bst|*.bug|*.bzl|*.c|*.c++|*.c++-objdump|*.c-objdump|*.cadl|*.camkes|\
        *.capnp|*.carbon|*.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|*.dax|*.dcl|*.decls|*.def|\
        *.desktop|*.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|*.explain|*.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|*.gleam|*.go|*.golo|*.googlesql|\
        *.googlesql.sql|*.gradle|*.graph|*.graphql|*.groovy|*.gs|*.gsp|*.gsql|\
        *.gst|*.gsx|*.gv|*.h|*.h++|*.ha|*.haml|*.handlebars|*.hbs|*.hcl|*.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|*.janet|*.java|*.jbst|*.jcl|\
        *.jdn|*.jl|*.jp|*.js|*.js.in|*.js.j2|*.js.jinja2|*.jsgf|*.jslt|*.jsm|\
        *.json|*.json5|*.jsonl|*.jsonld|*.jsonnet|*.jsp|*.jsul4|*.jsx|\
        *.juttle|*.jy|*.k|*.kal|*.kid|*.kif|*.kk|*.kki|*.kmsg|*.kn|*.kql|\
        *.ksh|*.kt|*.kts|*.kusto|*.lagda|*.lasso|*.lasso[89]|*.lcry|*.ldif|\
        *.lean|*.leex|*.less|*.lgt|*.lhs|*.libsonnet|*.lid|*.lidr|*.liquid|\
        *.lisp|*.ll|*.load|*.logtalk|*.lpad|*.ls|*.lsl|*.lsp|*.lua|*.luau|\
        *.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|*.mojo|*.monkey|\
        *.moo|*.moon|*.mos|*.mount|*.mpl|*.mq4|*.mq5|*.mqh|*.ms|*.msc|*.mt|\
        *.mu|*.mxml|*.myt|*.n|*.nasm|*.nb|*.nbp|*.nc|*.ncl|*.ndjson|*.ng2|\
        *.ni|*.nim|*.nimrod|*.nit|*.nix|*.nl|*.nqp|*.ns2|*.nsh|*.nsi|*.nt|\
        *.numbair|*.objdump|*.objdump-intel|*.odin|*.ooc|*.opa|*.orc|*.org|\
        *.p|*.p6|*.p6l|*.p6m|*.pack|*.pan|*.pas|*.patch|*.path|*.pc|*.pcmk|\
        *.pddl|*.peg|*.pem|*.perl|*.ph|*.php|*.php[345]|*.phtml|*.pidl|*.pig|\
        *.pike|*.pl|*.pl6|*.plot|*.plt|*.pm|*.pm6|*.pml|*.pmod|*.po|*.pony|\
        *.portugol|*.pot|*.pov|*.pp|*.pr|*.praat|*.prg|*.prm|*.pro|*.proc|\
        *.prolog|*.prom|*.promela|*.promql|*.properties|*.proto|*.prql|*.ps|\
        *.ps1|*.psc|*.psi|*.psl|*.psm1|*.ptls|*.ptx|*.pug|*.pwn|*.pxd|*.pxi|\
        *.py|*.py2tb|*.py3tb|*.pyi|*.pypylog|*.pytb|*.pyul4|*.pyw|*.pyx|*.q|\
        *.qbs|*.ql|*.qll|*.qml|*.qvs|*.qvto|*.qvw|*.r|*.r3|*.rake|*.raku|\
        *.rakudoc|*.rakumod|*.rakutest|*.rb|*.rbw|*.rbx|*.re|*.react|*.reb|\
        *.red|*.reds|*.reg|*.rego|*.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|*.scad|*.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|*.sources|*.sp|*.sparql|*.spec|\
        *.spice|*.spt|*.sql|*.sql.j2|*.sql.jinja2|*.sqlite3-console|*.ss|\
        *.ssp|*.st|*.stan|*.sv|*.svh|*.swap|*.swg|*.swift|*.t|*.tac|*.tact|\
        *.tal|*.tap|*.target|*.tasm|*.tcl|*.tcsh|*.td|*.tea|*.teal|*.tex|*.tf|\
        *.thrift|*.thy|*.ti|*.tid|*.timer|*.tlb|*.tmpl|*.tnt|*.toc|*.todotxt|\
        *.toml|*.tpl|*.tpp|*.treetop|*.ts|*.tst|*.tsx|*.tt|*.ttl|*.twig|*.txt|\
        *.typ|*.typoscript|*.u|*.u1|*.u2|*.udo|*.ul4|*.usd|*.usda|*.v|*.vala|\
        *.vapi|*.vark|*.vb|*.vbs|*.vcl|*.vert|*.vhd|*.vhdl|*.vim|*.vipgrm|\
        *.vm|*.vp|*.vpr|*.vue|*.vy|*.wast|*.wat|*.wdiff|*.webidl|*.weechatlog|\
        *.wgsl|*.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|*.xpp|*.xq|*.xql|*.xqm|*.xquery|*.xqy|*.xsd|*.xsl|\
        *.xslt|*.xtend|*.xtm|*.xul.in|*.yaml|*.yaml.j2|*.yaml.jinja2|*.yang|\
        *.yar|*.yml|*.yml.j2|*.yml.jinja2|*.zeek|*.zep|*.zig|*.zone|*.zsh|*.🔥|\
        *Config.in*|*Spec.hs|.Renviron|.Rhistory|.Rprofile|.SRCINFO|.bashrc|\
        .csl|.editorconfig|.exrc|.gvimrc|.htaccess|.kshrc|.ldaprc|.vimrc|\
        .zshrc|Android.bp|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|ldap.conf|ldaprc|\
        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"
            ;;
        *)
            # attempt to parse the lexer from the shebang if it exists
            # ensure that grep and awk are installed
            for prog in grep awk; do
                if ! command -v "$prog" &>/dev/null; then
                    echo "\`$prog\` not found; unable to parse shebang" >&2
                    # fall-back to plain text
                    exit 1
                fi
            done
            lexer=$(head -n 1 "$path" | grep '^#\!' | awk -F" " \
'{ if (/env/) { print $2 } else { sub( /.*\//, ""); print $1;} }')
            case "$lexer" in
                node|nodejs)
                    # use `js` lexer for nodejs
                    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
done
exit 0