gilo/editor/highlight/syntax.go
Timothy Warren ee99e553f0
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Highlight string literals
2023-10-04 14:22:51 -04:00

74 lines
1.5 KiB
Go

package highlight
import (
"strings"
"timshome.page/gilo/terminal"
)
// ------------------------------------------------------------------
// Syntax Type -> Color Mapping
// ------------------------------------------------------------------
var syntaxColorMap = map[int]string{
String: terminal.FGMagenta,
Number: terminal.FGRed,
Match: terminal.FGBlue,
Normal: terminal.DefaultFGColor,
}
// SyntaxToColor Take a highlighting type and map it to
// an ANSI color escape code for display
func SyntaxToColor(hl int) string {
color := syntaxColorMap[hl]
if len(color) == 0 {
color = terminal.DefaultFGColor
}
return color
}
// ------------------------------------------------------------------
// File Type -> Syntax Mapping
// ------------------------------------------------------------------
type Syntax struct {
FileType string
FileMatch []string
Flags int
}
// HLDB - The "database" of syntax types
var HLDB = []*Syntax{{
"c",
[]string{".c", ".h", ".cpp"},
HighlightNumbers | HighlightStrings,
}, {
"go",
[]string{".go", "go.mod"},
HighlightNumbers | HighlightStrings,
}, {
"makefile",
[]string{"Makefile", "makefile"},
0,
}}
func GetSyntaxByFilename(filename string) *Syntax {
if filename == "" {
return nil
}
extInd := strings.LastIndex(filename, ".")
ext := filename[extInd:len(filename)]
for i := 0; i < len(HLDB); i++ {
s := HLDB[i]
for j := range s.FileMatch {
if s.FileMatch[j] == ext || strings.Contains(filename, s.FileMatch[j]) {
return s
}
}
}
return nil
}