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|
package h
import (
"strings"
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// HTTP lexer.
var HTTP = internal.Register(httpBodyContentTypeLexer(MustNewLazyLexer(
&Config{
Name: "HTTP",
Aliases: []string{"http"},
Filenames: []string{},
MimeTypes: []string{},
NotMultiline: true,
DotAll: true,
},
httpRules,
)))
func httpRules() Rules {
return Rules{
"root": {
{`(GET|POST|PUT|DELETE|HEAD|OPTIONS|TRACE|PATCH|CONNECT)( +)([^ ]+)( +)(HTTP)(/)([12]\.[01])(\r?\n|\Z)`, ByGroups(NameFunction, Text, NameNamespace, Text, KeywordReserved, Operator, LiteralNumber, Text), Push("headers")},
{`(HTTP)(/)([12]\.[01])( +)(\d{3})( +)([^\r\n]+)(\r?\n|\Z)`, ByGroups(KeywordReserved, Operator, LiteralNumber, Text, LiteralNumber, Text, NameException, Text), Push("headers")},
},
"headers": {
{`([^\s:]+)( *)(:)( *)([^\r\n]+)(\r?\n|\Z)`, EmitterFunc(httpHeaderBlock), nil},
{`([\t ]+)([^\r\n]+)(\r?\n|\Z)`, EmitterFunc(httpContinuousHeaderBlock), nil},
{`\r?\n`, Text, Push("content")},
},
"content": {
{`.+`, EmitterFunc(httpContentBlock), nil},
},
}
}
func httpContentBlock(groups []string, lexer Lexer) Iterator {
tokens := []Token{
{Generic, groups[0]},
}
return Literator(tokens...)
}
func httpHeaderBlock(groups []string, lexer Lexer) Iterator {
tokens := []Token{
{Name, groups[1]},
{Text, groups[2]},
{Operator, groups[3]},
{Text, groups[4]},
{Literal, groups[5]},
{Text, groups[6]},
}
return Literator(tokens...)
}
func httpContinuousHeaderBlock(groups []string, lexer Lexer) Iterator {
tokens := []Token{
{Text, groups[1]},
{Literal, groups[2]},
{Text, groups[3]},
}
return Literator(tokens...)
}
func httpBodyContentTypeLexer(lexer Lexer) Lexer { return &httpBodyContentTyper{lexer} }
type httpBodyContentTyper struct{ Lexer }
func (d *httpBodyContentTyper) Tokenise(options *TokeniseOptions, text string) (Iterator, error) { // nolint: gocognit
var contentType string
var isContentType bool
var subIterator Iterator
it, err := d.Lexer.Tokenise(options, text)
if err != nil {
return nil, err
}
return func() Token {
token := it()
if token == EOF {
if subIterator != nil {
return subIterator()
}
return EOF
}
switch {
case token.Type == Name && strings.ToLower(token.Value) == "content-type":
{
isContentType = true
}
case token.Type == Literal && isContentType:
{
isContentType = false
contentType = strings.TrimSpace(token.Value)
pos := strings.Index(contentType, ";")
if pos > 0 {
contentType = strings.TrimSpace(contentType[:pos])
}
}
case token.Type == Generic && contentType != "":
{
lexer := internal.MatchMimeType(contentType)
// application/calendar+xml can be treated as application/xml
// if there's not a better match.
if lexer == nil && strings.Contains(contentType, "+") {
slashPos := strings.Index(contentType, "/")
plusPos := strings.LastIndex(contentType, "+")
contentType = contentType[:slashPos+1] + contentType[plusPos+1:]
lexer = internal.MatchMimeType(contentType)
}
if lexer == nil {
token.Type = Text
} else {
subIterator, err = lexer.Tokenise(nil, token.Value)
if err != nil {
panic(err)
}
return EOF
}
}
}
return token
}, nil
}
|
