110 lines
2.8 KiB
Go
110 lines
2.8 KiB
Go
package highlight
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import (
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"strings"
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"timshome.page/gilo/terminal"
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)
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// ----------------------------------------------------------------------------
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// !Syntax Highlighting Constants
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// ----------------------------------------------------------------------------
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const (
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Normal = iota
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Comment
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Keyword1
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Keyword2
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String
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Number
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Match
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)
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const (
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DoNumbers = 1 << 0
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DoStrings = 1 << 1
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)
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// ------------------------------------------------------------------
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// Syntax Type -> Color Mapping
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// ------------------------------------------------------------------
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var syntaxColorMap = map[int]string{
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Comment: terminal.FGCyan,
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Keyword1: terminal.FGYellow,
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Keyword2: terminal.FGGreen,
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String: terminal.FGBrightMagenta,
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Number: terminal.FGRed,
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Match: terminal.FGBlue,
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Normal: terminal.DefaultFGColor,
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}
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// SyntaxToColor Take a highlighting type and map it to
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// an ANSI color escape code for display
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func SyntaxToColor(hl int) string {
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color := syntaxColorMap[hl]
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if len(color) == 0 {
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color = terminal.DefaultFGColor
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}
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return color
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}
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// ------------------------------------------------------------------
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// File Type -> Syntax Mapping
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// ------------------------------------------------------------------
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type Syntax struct {
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FileType string
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FileMatch []string
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LineCommentStart string
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Keywords1 []string
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Keywords2 []string
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Flags int
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}
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// HLDB - The "database" of syntax types
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var HLDB = []*Syntax{{
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"c",
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[]string{".c", ".h", ".cpp"},
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"//",
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[]string{"switch", "if", "while", "for", "break", "continue", "return", "else", "struct", "union", "typedef", "static", "enum", "class", "case"},
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[]string{"int", "long", "double", "float", "char", "unsigned", "signed", "void"},
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DoNumbers | DoStrings,
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}, {
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"go",
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[]string{".go", "go.mod"},
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"//",
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[]string{"break", "case", "chan", "const", "continue", "default", "defer", "else", "fallthrough", "for", "func", "go", "goto", "if", "import", "interface", "map", "package", "range", "return", "select", "struct", "switch", "type", "var", "iota"},
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[]string{"bool", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64", "float32", "float64", "complex64", "complex128", "byte", "rune", "uint", "int", "uintptr", "string", "struct", "type", "map"},
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DoNumbers | DoStrings,
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}, {
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"makefile",
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[]string{"Makefile", "makefile", "justfile"},
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"#",
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[]string{},
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[]string{},
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0,
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}}
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func GetSyntaxByFilename(filename string) *Syntax {
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if filename == "" {
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return nil
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}
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var ext string = ""
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extInd := strings.LastIndex(filename, ".")
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if extInd > -1 {
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ext = filename[extInd:len(filename)]
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}
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for i := 0; i < len(HLDB); i++ {
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s := HLDB[i]
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for j := range s.FileMatch {
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if s.FileMatch[j] == ext || strings.Contains(filename, s.FileMatch[j]) {
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return s
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}
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}
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}
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return nil
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}
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