`)
+ if err != nil {
+ return
+ }
+
+ // include language-x class as part of commonmark spec
+ _, err = w.WriteString(``)
+ if err != nil {
+ return
+ }
+ } else {
+ _, err := w.WriteString("")
+ if err != nil {
+ return
+ }
+ }
}),
),
meta.Meta,
diff --git a/vendor/github.com/alecthomas/chroma/.gitignore b/vendor/github.com/alecthomas/chroma/.gitignore
new file mode 100644
index 000000000..ccacd12e9
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/.gitignore
@@ -0,0 +1,19 @@
+# Binaries for programs and plugins
+*.exe
+*.dll
+*.so
+*.dylib
+/cmd/chroma/chroma
+
+# Test binary, build with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
+.glide/
+
+_models/
+
+_examples/
diff --git a/vendor/github.com/alecthomas/chroma/.golangci.yml b/vendor/github.com/alecthomas/chroma/.golangci.yml
new file mode 100644
index 000000000..ba7557339
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/.golangci.yml
@@ -0,0 +1,76 @@
+run:
+ tests: true
+ skip-dirs:
+ - _examples
+
+output:
+ print-issued-lines: false
+
+linters:
+ enable-all: true
+ disable:
+ - maligned
+ - megacheck
+ - lll
+ - gocyclo
+ - dupl
+ - gochecknoglobals
+ - funlen
+ - godox
+ - wsl
+ - gomnd
+ - gocognit
+ - goerr113
+ - nolintlint
+ - testpackage
+ - godot
+ - nestif
+ - paralleltest
+ - nlreturn
+ - cyclop
+ - exhaustivestruct
+ - gci
+ - gofumpt
+ - errorlint
+ - exhaustive
+ - ifshort
+ - wrapcheck
+ - stylecheck
+
+linters-settings:
+ govet:
+ check-shadowing: true
+ gocyclo:
+ min-complexity: 10
+ dupl:
+ threshold: 100
+ goconst:
+ min-len: 8
+ min-occurrences: 3
+ forbidigo:
+ forbid:
+ - (Must)?NewLexer
+ exclude_godoc_examples: false
+
+
+issues:
+ max-per-linter: 0
+ max-same: 0
+ exclude-use-default: false
+ exclude:
+ # Captured by errcheck.
+ - '^(G104|G204):'
+ # Very commonly not checked.
+ - 'Error return value of .(.*\.Help|.*\.MarkFlagRequired|(os\.)?std(out|err)\..*|.*Close|.*Flush|os\.Remove(All)?|.*printf?|os\.(Un)?Setenv). is not checked'
+ - 'exported method (.*\.MarshalJSON|.*\.UnmarshalJSON|.*\.EntityURN|.*\.GoString|.*\.Pos) should have comment or be unexported'
+ - 'composite literal uses unkeyed fields'
+ - 'declaration of "err" shadows declaration'
+ - 'should not use dot imports'
+ - 'Potential file inclusion via variable'
+ - 'should have comment or be unexported'
+ - 'comment on exported var .* should be of the form'
+ - 'at least one file in a package should have a package comment'
+ - 'string literal contains the Unicode'
+ - 'methods on the same type should have the same receiver name'
+ - '_TokenType_name should be _TokenTypeName'
+ - '`_TokenType_map` should be `_TokenTypeMap`'
diff --git a/vendor/github.com/alecthomas/chroma/.goreleaser.yml b/vendor/github.com/alecthomas/chroma/.goreleaser.yml
new file mode 100644
index 000000000..8cd7592d3
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/.goreleaser.yml
@@ -0,0 +1,37 @@
+project_name: chroma
+release:
+ github:
+ owner: alecthomas
+ name: chroma
+brews:
+ -
+ install: bin.install "chroma"
+env:
+ - CGO_ENABLED=0
+builds:
+- goos:
+ - linux
+ - darwin
+ - windows
+ goarch:
+ - arm64
+ - amd64
+ - "386"
+ goarm:
+ - "6"
+ dir: ./cmd/chroma
+ main: .
+ ldflags: -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{.Date}}
+ binary: chroma
+archives:
+ -
+ format: tar.gz
+ name_template: '{{ .Binary }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{
+ .Arm }}{{ end }}'
+ files:
+ - COPYING
+ - README*
+snapshot:
+ name_template: SNAPSHOT-{{ .Commit }}
+checksum:
+ name_template: '{{ .ProjectName }}-{{ .Version }}-checksums.txt'
diff --git a/vendor/github.com/alecthomas/chroma/COPYING b/vendor/github.com/alecthomas/chroma/COPYING
new file mode 100644
index 000000000..92dc39f70
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/COPYING
@@ -0,0 +1,19 @@
+Copyright (C) 2017 Alec Thomas
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/github.com/alecthomas/chroma/Makefile b/vendor/github.com/alecthomas/chroma/Makefile
new file mode 100644
index 000000000..34e3c41c6
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/Makefile
@@ -0,0 +1,19 @@
+.PHONY: chromad upload all
+
+VERSION ?= $(shell git describe --tags --dirty --always)
+
+all: README.md tokentype_string.go
+
+README.md: lexers/*/*.go
+ ./table.py
+
+tokentype_string.go: types.go
+ go generate
+
+chromad:
+ rm -f chromad
+ (export CGOENABLED=0 GOOS=linux GOARCH=amd64; cd ./cmd/chromad && go build -ldflags="-X 'main.version=$(VERSION)'" -o ../../chromad .)
+
+upload: chromad
+ scp chromad root@swapoff.org: && \
+ ssh root@swapoff.org 'install -m755 ./chromad /srv/http/swapoff.org/bin && service chromad restart'
diff --git a/vendor/github.com/alecthomas/chroma/README.md b/vendor/github.com/alecthomas/chroma/README.md
new file mode 100644
index 000000000..b62b84768
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/README.md
@@ -0,0 +1,285 @@
+# Chroma — A general purpose syntax highlighter in pure Go
+[](https://godoc.org/github.com/alecthomas/chroma) [](https://github.com/alecthomas/chroma/actions/workflows/ci.yml) [](https://invite.slack.golangbridge.org/)
+
+> **NOTE:** As Chroma has just been released, its API is still in flux. That said, the high-level interface should not change significantly.
+
+Chroma takes source code and other structured text and converts it into syntax
+highlighted HTML, ANSI-coloured text, etc.
+
+Chroma is based heavily on [Pygments](http://pygments.org/), and includes
+translators for Pygments lexers and styles.
+
+
+## Table of Contents
+
+
+
+1. [Table of Contents](#table-of-contents)
+2. [Supported languages](#supported-languages)
+3. [Try it](#try-it)
+4. [Using the library](#using-the-library)
+ 1. [Quick start](#quick-start)
+ 2. [Identifying the language](#identifying-the-language)
+ 3. [Formatting the output](#formatting-the-output)
+ 4. [The HTML formatter](#the-html-formatter)
+5. [More detail](#more-detail)
+ 1. [Lexers](#lexers)
+ 2. [Formatters](#formatters)
+ 3. [Styles](#styles)
+6. [Command-line interface](#command-line-interface)
+7. [What's missing compared to Pygments?](#whats-missing-compared-to-pygments)
+
+
+
+
+## Supported languages
+
+Prefix | Language
+:----: | --------
+A | ABAP, ABNF, ActionScript, ActionScript 3, Ada, Angular2, ANTLR, ApacheConf, APL, AppleScript, Arduino, Awk
+B | Ballerina, Base Makefile, Bash, Batchfile, BibTeX, Bicep, BlitzBasic, BNF, Brainfuck
+C | C, C#, C++, Caddyfile, Caddyfile Directives, Cap'n Proto, Cassandra CQL, Ceylon, CFEngine3, cfstatement, ChaiScript, Cheetah, Clojure, CMake, COBOL, CoffeeScript, Common Lisp, Coq, Crystal, CSS, Cython
+D | D, Dart, Diff, Django/Jinja, Docker, DTD, Dylan
+E | EBNF, Elixir, Elm, EmacsLisp, Erlang
+F | Factor, Fish, Forth, Fortran, FSharp
+G | GAS, GDScript, Genshi, Genshi HTML, Genshi Text, Gherkin, GLSL, Gnuplot, Go, Go HTML Template, Go Text Template, GraphQL, Groff, Groovy
+H | Handlebars, Haskell, Haxe, HCL, Hexdump, HLB, HTML, HTTP, Hy
+I | Idris, Igor, INI, Io
+J | J, Java, JavaScript, JSON, Julia, Jungle
+K | Kotlin
+L | Lighttpd configuration file, LLVM, Lua
+M | Mako, markdown, Mason, Mathematica, Matlab, MiniZinc, MLIR, Modula-2, MonkeyC, MorrowindScript, Myghty, MySQL
+N | NASM, Newspeak, Nginx configuration file, Nim, Nix
+O | Objective-C, OCaml, Octave, OnesEnterprise, OpenEdge ABL, OpenSCAD, Org Mode
+P | PacmanConf, Perl, PHP, PHTML, Pig, PkgConfig, PL/pgSQL, plaintext, Pony, PostgreSQL SQL dialect, PostScript, POVRay, PowerShell, Prolog, PromQL, Protocol Buffer, Puppet, Python 2, Python
+Q | QBasic
+R | R, Racket, Ragel, Raku, react, ReasonML, reg, reStructuredText, Rexx, Ruby, Rust
+S | SAS, Sass, Scala, Scheme, Scilab, SCSS, Smalltalk, Smarty, Snobol, Solidity, SPARQL, SQL, SquidConf, Standard ML, Stylus, Svelte, Swift, SYSTEMD, systemverilog
+T | TableGen, TASM, Tcl, Tcsh, Termcap, Terminfo, Terraform, TeX, Thrift, TOML, TradingView, Transact-SQL, Turing, Turtle, Twig, TypeScript, TypoScript, TypoScriptCssData, TypoScriptHtmlData
+V | VB.net, verilog, VHDL, VimL, vue
+W | WDTE
+X | XML, Xorg
+Y | YAML, YANG
+Z | Zig
+
+
+_I will attempt to keep this section up to date, but an authoritative list can be
+displayed with `chroma --list`._
+
+
+## Try it
+
+Try out various languages and styles on the [Chroma Playground](https://swapoff.org/chroma/playground/).
+
+
+## Using the library
+
+Chroma, like Pygments, has the concepts of
+[lexers](https://github.com/alecthomas/chroma/tree/master/lexers),
+[formatters](https://github.com/alecthomas/chroma/tree/master/formatters) and
+[styles](https://github.com/alecthomas/chroma/tree/master/styles).
+
+Lexers convert source text into a stream of tokens, styles specify how token
+types are mapped to colours, and formatters convert tokens and styles into
+formatted output.
+
+A package exists for each of these, containing a global `Registry` variable
+with all of the registered implementations. There are also helper functions
+for using the registry in each package, such as looking up lexers by name or
+matching filenames, etc.
+
+In all cases, if a lexer, formatter or style can not be determined, `nil` will
+be returned. In this situation you may want to default to the `Fallback`
+value in each respective package, which provides sane defaults.
+
+
+### Quick start
+
+A convenience function exists that can be used to simply format some source
+text, without any effort:
+
+```go
+err := quick.Highlight(os.Stdout, someSourceCode, "go", "html", "monokai")
+```
+
+
+### Identifying the language
+
+To highlight code, you'll first have to identify what language the code is
+written in. There are three primary ways to do that:
+
+1. Detect the language from its filename.
+
+ ```go
+ lexer := lexers.Match("foo.go")
+ ```
+
+3. Explicitly specify the language by its Chroma syntax ID (a full list is available from `lexers.Names()`).
+
+ ```go
+ lexer := lexers.Get("go")
+ ```
+
+3. Detect the language from its content.
+
+ ```go
+ lexer := lexers.Analyse("package main\n\nfunc main()\n{\n}\n")
+ ```
+
+In all cases, `nil` will be returned if the language can not be identified.
+
+```go
+if lexer == nil {
+ lexer = lexers.Fallback
+}
+```
+
+At this point, it should be noted that some lexers can be extremely chatty. To
+mitigate this, you can use the coalescing lexer to coalesce runs of identical
+token types into a single token:
+
+```go
+lexer = chroma.Coalesce(lexer)
+```
+
+
+### Formatting the output
+
+Once a language is identified you will need to pick a formatter and a style (theme).
+
+```go
+style := styles.Get("swapoff")
+if style == nil {
+ style = styles.Fallback
+}
+formatter := formatters.Get("html")
+if formatter == nil {
+ formatter = formatters.Fallback
+}
+```
+
+Then obtain an iterator over the tokens:
+
+```go
+contents, err := ioutil.ReadAll(r)
+iterator, err := lexer.Tokenise(nil, string(contents))
+```
+
+And finally, format the tokens from the iterator:
+
+```go
+err := formatter.Format(w, style, iterator)
+```
+
+
+### The HTML formatter
+
+By default the `html` registered formatter generates standalone HTML with
+embedded CSS. More flexibility is available through the `formatters/html` package.
+
+Firstly, the output generated by the formatter can be customised with the
+following constructor options:
+
+- `Standalone()` - generate standalone HTML with embedded CSS.
+- `WithClasses()` - use classes rather than inlined style attributes.
+- `ClassPrefix(prefix)` - prefix each generated CSS class.
+- `TabWidth(width)` - Set the rendered tab width, in characters.
+- `WithLineNumbers()` - Render line numbers (style with `LineNumbers`).
+- `LinkableLineNumbers()` - Make the line numbers linkable and be a link to themselves.
+- `HighlightLines(ranges)` - Highlight lines in these ranges (style with `LineHighlight`).
+- `LineNumbersInTable()` - Use a table for formatting line numbers and code, rather than spans.
+
+If `WithClasses()` is used, the corresponding CSS can be obtained from the formatter with:
+
+```go
+formatter := html.New(html.WithClasses())
+err := formatter.WriteCSS(w, style)
+```
+
+
+## More detail
+
+
+### Lexers
+
+See the [Pygments documentation](http://pygments.org/docs/lexerdevelopment/)
+for details on implementing lexers. Most concepts apply directly to Chroma,
+but see existing lexer implementations for real examples.
+
+In many cases lexers can be automatically converted directly from Pygments by
+using the included Python 3 script `pygments2chroma.py`. I use something like
+the following:
+
+```sh
+python3 _tools/pygments2chroma.py \
+ pygments.lexers.jvm.KotlinLexer \
+ > lexers/k/kotlin.go \
+ && gofmt -s -w lexers/k/kotlin.go
+```
+
+See notes in [pygments-lexers.txt](https://github.com/alecthomas/chroma/blob/master/pygments-lexers.txt)
+for a list of lexers, and notes on some of the issues importing them.
+
+
+### Formatters
+
+Chroma supports HTML output, as well as terminal output in 8 colour, 256 colour, and true-colour.
+
+A `noop` formatter is included that outputs the token text only, and a `tokens`
+formatter outputs raw tokens. The latter is useful for debugging lexers.
+
+
+### Styles
+
+Chroma styles use the [same syntax](http://pygments.org/docs/styles/) as Pygments.
+
+All Pygments styles have been converted to Chroma using the `_tools/style.py` script.
+
+When you work with one of [Chroma's styles](https://github.com/alecthomas/chroma/tree/master/styles), know that the `chroma.Background` token type provides the default style for tokens. It does so by defining a foreground color and background color.
+
+For example, this gives each token name not defined in the style a default color of `#f8f8f8` and uses `#000000` for the highlighted code block's background:
+
+~~~go
+chroma.Background: "#f8f8f2 bg:#000000",
+~~~
+
+Also, token types in a style file are hierarchical. For instance, when `CommentSpecial` is not defined, Chroma uses the token style from `Comment`. So when several comment tokens use the same color, you'll only need to define `Comment` and override the one that has a different color.
+
+For a quick overview of the available styles and how they look, check out the [Chroma Style Gallery](https://xyproto.github.io/splash/docs/).
+
+
+## Command-line interface
+
+A command-line interface to Chroma is included.
+
+Binaries are available to install from [the releases page](https://github.com/alecthomas/chroma/releases).
+
+The CLI can be used as a preprocessor to colorise output of `less(1)`,
+see documentation for the `LESSOPEN` environment variable.
+
+The `--fail` flag can be used to suppress output and return with exit status
+1 to facilitate falling back to some other preprocessor in case chroma
+does not resolve a specific lexer to use for the given file. For example:
+
+```shell
+export LESSOPEN='| p() { chroma --fail "$1" || cat "$1"; }; p "%s"'
+```
+
+Replace `cat` with your favourite fallback preprocessor.
+
+When invoked as `.lessfilter`, the `--fail` flag is automatically turned
+on under the hood for easy integration with [lesspipe shipping with
+Debian and derivatives](https://manpages.debian.org/lesspipe#USER_DEFINED_FILTERS);
+for that setup the `chroma` executable can be just symlinked to `~/.lessfilter`.
+
+
+## What's missing compared to Pygments?
+
+- Quite a few lexers, for various reasons (pull-requests welcome):
+ - Pygments lexers for complex languages often include custom code to
+ handle certain aspects, such as Raku's ability to nest code inside
+ regular expressions. These require time and effort to convert.
+ - I mostly only converted languages I had heard of, to reduce the porting cost.
+- Some more esoteric features of Pygments are omitted for simplicity.
+- Though the Chroma API supports content detection, very few languages support them.
+ I have plans to implement a statistical analyser at some point, but not enough time.
diff --git a/vendor/github.com/alecthomas/chroma/coalesce.go b/vendor/github.com/alecthomas/chroma/coalesce.go
new file mode 100644
index 000000000..f5048951a
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/coalesce.go
@@ -0,0 +1,35 @@
+package chroma
+
+// Coalesce is a Lexer interceptor that collapses runs of common types into a single token.
+func Coalesce(lexer Lexer) Lexer { return &coalescer{lexer} }
+
+type coalescer struct{ Lexer }
+
+func (d *coalescer) Tokenise(options *TokeniseOptions, text string) (Iterator, error) {
+ var prev Token
+ it, err := d.Lexer.Tokenise(options, text)
+ if err != nil {
+ return nil, err
+ }
+ return func() Token {
+ for token := it(); token != (EOF); token = it() {
+ if len(token.Value) == 0 {
+ continue
+ }
+ if prev == EOF {
+ prev = token
+ } else {
+ if prev.Type == token.Type && len(prev.Value) < 8192 {
+ prev.Value += token.Value
+ } else {
+ out := prev
+ prev = token
+ return out
+ }
+ }
+ }
+ out := prev
+ prev = EOF
+ return out
+ }, nil
+}
diff --git a/vendor/github.com/alecthomas/chroma/colour.go b/vendor/github.com/alecthomas/chroma/colour.go
new file mode 100644
index 000000000..15d794ce2
--- /dev/null
+++ b/vendor/github.com/alecthomas/chroma/colour.go
@@ -0,0 +1,164 @@
+package chroma
+
+import (
+ "fmt"
+ "math"
+ "strconv"
+ "strings"
+)
+
+// ANSI2RGB maps ANSI colour names, as supported by Chroma, to hex RGB values.
+var ANSI2RGB = map[string]string{
+ "#ansiblack": "000000",
+ "#ansidarkred": "7f0000",
+ "#ansidarkgreen": "007f00",
+ "#ansibrown": "7f7fe0",
+ "#ansidarkblue": "00007f",
+ "#ansipurple": "7f007f",
+ "#ansiteal": "007f7f",
+ "#ansilightgray": "e5e5e5",
+ // Normal
+ "#ansidarkgray": "555555",
+ "#ansired": "ff0000",
+ "#ansigreen": "00ff00",
+ "#ansiyellow": "ffff00",
+ "#ansiblue": "0000ff",
+ "#ansifuchsia": "ff00ff",
+ "#ansiturquoise": "00ffff",
+ "#ansiwhite": "ffffff",
+
+ // Aliases without the "ansi" prefix, because...why?
+ "#black": "000000",
+ "#darkred": "7f0000",
+ "#darkgreen": "007f00",
+ "#brown": "7f7fe0",
+ "#darkblue": "00007f",
+ "#purple": "7f007f",
+ "#teal": "007f7f",
+ "#lightgray": "e5e5e5",
+ // Normal
+ "#darkgray": "555555",
+ "#red": "ff0000",
+ "#green": "00ff00",
+ "#yellow": "ffff00",
+ "#blue": "0000ff",
+ "#fuchsia": "ff00ff",
+ "#turquoise": "00ffff",
+ "#white": "ffffff",
+}
+
+// Colour represents an RGB colour.
+type Colour int32
+
+// NewColour creates a Colour directly from RGB values.
+func NewColour(r, g, b uint8) Colour {
+ return ParseColour(fmt.Sprintf("%02x%02x%02x", r, g, b))
+}
+
+// Distance between this colour and another.
+//
+// This uses the approach described here (https://www.compuphase.com/cmetric.htm).
+// This is not as accurate as LAB, et. al. but is *vastly* simpler and sufficient for our needs.
+func (c Colour) Distance(e2 Colour) float64 {
+ ar, ag, ab := int64(c.Red()), int64(c.Green()), int64(c.Blue())
+ br, bg, bb := int64(e2.Red()), int64(e2.Green()), int64(e2.Blue())
+ rmean := (ar + br) / 2
+ r := ar - br
+ g := ag - bg
+ b := ab - bb
+ return math.Sqrt(float64((((512 + rmean) * r * r) >> 8) + 4*g*g + (((767 - rmean) * b * b) >> 8)))
+}
+
+// Brighten returns a copy of this colour with its brightness adjusted.
+//
+// If factor is negative, the colour is darkened.
+//
+// Uses approach described here (http://www.pvladov.com/2012/09/make-color-lighter-or-darker.html).
+func (c Colour) Brighten(factor float64) Colour {
+ r := float64(c.Red())
+ g := float64(c.Green())
+ b := float64(c.Blue())
+
+ if factor < 0 {
+ factor++
+ r *= factor
+ g *= factor
+ b *= factor
+ } else {
+ r = (255-r)*factor + r
+ g = (255-g)*factor + g
+ b = (255-b)*factor + b
+ }
+ return NewColour(uint8(r), uint8(g), uint8(b))
+}
+
+// BrightenOrDarken brightens a colour if it is < 0.5 brighteness or darkens if > 0.5 brightness.
+func (c Colour) BrightenOrDarken(factor float64) Colour {
+ if c.Brightness() < 0.5 {
+ return c.Brighten(factor)
+ }
+ return c.Brighten(-factor)
+}
+
+// Brightness of the colour (roughly) in the range 0.0 to 1.0
+func (c Colour) Brightness() float64 {
+ return (float64(c.Red()) + float64(c.Green()) + float64(c.Blue())) / 255.0 / 3.0
+}
+
+// ParseColour in the forms #rgb, #rrggbb, #ansielement. + // The code flag tells whether this block surrounds + // highlighted code. This will be false when surrounding + // line numbers. + Start(code bool, styleAttr string) string + + // End is called to write the endelement. + End(code bool) string +} + +type preWrapper struct { + start func(code bool, styleAttr string) string + end func(code bool) string +} + +func (p preWrapper) Start(code bool, styleAttr string) string { + return p.start(code, styleAttr) +} + +func (p preWrapper) End(code bool) string { + return p.end(code) +} + +var ( + nopPreWrapper = preWrapper{ + start: func(code bool, styleAttr string) string { return "" }, + end: func(code bool) string { return "" }, + } + defaultPreWrapper = preWrapper{ + start: func(code bool, styleAttr string) string { + if code { + return fmt.Sprintf(`
`, styleAttr)
+ }
+
+ return fmt.Sprintf(``, styleAttr)
+ },
+ end: func(code bool) string {
+ if code {
+ return `