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colorscheme: Add capability to include schemes (#2844)
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@ -52,43 +52,55 @@ func InitColorscheme() error {
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Colorscheme = make(map[string]tcell.Style)
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DefStyle = tcell.StyleDefault
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return LoadDefaultColorscheme()
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c, err := LoadDefaultColorscheme()
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if err == nil {
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Colorscheme = c
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}
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return err
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}
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// LoadDefaultColorscheme loads the default colorscheme from $(ConfigDir)/colorschemes
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func LoadDefaultColorscheme() error {
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return LoadColorscheme(GlobalSettings["colorscheme"].(string))
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func LoadDefaultColorscheme() (map[string]tcell.Style, error) {
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var parsedColorschemes []string
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return LoadColorscheme(GlobalSettings["colorscheme"].(string), &parsedColorschemes)
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}
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// LoadColorscheme loads the given colorscheme from a directory
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func LoadColorscheme(colorschemeName string) error {
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func LoadColorscheme(colorschemeName string, parsedColorschemes *[]string) (map[string]tcell.Style, error) {
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c := make(map[string]tcell.Style)
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file := FindRuntimeFile(RTColorscheme, colorschemeName)
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if file == nil {
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return errors.New(colorschemeName + " is not a valid colorscheme")
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return c, errors.New(colorschemeName + " is not a valid colorscheme")
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}
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if data, err := file.Data(); err != nil {
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return errors.New("Error loading colorscheme: " + err.Error())
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return c, errors.New("Error loading colorscheme: " + err.Error())
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} else {
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Colorscheme, err = ParseColorscheme(string(data))
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var err error
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c, err = ParseColorscheme(file.Name(), string(data), parsedColorschemes)
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if err != nil {
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return err
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return c, err
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}
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}
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return nil
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return c, nil
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}
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// ParseColorscheme parses the text definition for a colorscheme and returns the corresponding object
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// Colorschemes are made up of color-link statements linking a color group to a list of colors
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// For example, color-link keyword (blue,red) makes all keywords have a blue foreground and
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// red background
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func ParseColorscheme(text string) (map[string]tcell.Style, error) {
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func ParseColorscheme(name string, text string, parsedColorschemes *[]string) (map[string]tcell.Style, error) {
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var err error
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parser := regexp.MustCompile(`color-link\s+(\S*)\s+"(.*)"`)
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colorParser := regexp.MustCompile(`color-link\s+(\S*)\s+"(.*)"`)
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includeParser := regexp.MustCompile(`include\s+"(.*)"`)
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lines := strings.Split(text, "\n")
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c := make(map[string]tcell.Style)
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if parsedColorschemes != nil {
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*parsedColorschemes = append(*parsedColorschemes, name)
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}
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lineLoop:
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for _, line := range lines {
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if strings.TrimSpace(line) == "" ||
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strings.TrimSpace(line)[0] == '#' {
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@ -96,7 +108,30 @@ func ParseColorscheme(text string) (map[string]tcell.Style, error) {
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continue
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}
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matches := parser.FindSubmatch([]byte(line))
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matches := includeParser.FindSubmatch([]byte(line))
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if len(matches) == 2 {
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// support includes only in case parsedColorschemes are given
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if parsedColorschemes != nil {
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include := string(matches[1])
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for _, name := range *parsedColorschemes {
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// check for circular includes...
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if name == include {
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// ...and prevent them
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continue lineLoop
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}
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}
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includeScheme, err := LoadColorscheme(include, parsedColorschemes)
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if err != nil {
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return c, err
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}
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for k, v := range includeScheme {
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c[k] = v
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}
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}
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continue
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}
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matches = colorParser.FindSubmatch([]byte(line))
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if len(matches) == 3 {
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link := string(matches[1])
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colors := string(matches[2])
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@ -65,7 +65,7 @@ color-link constant "#AE81FF,#282828"
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color-link constant.string "#E6DB74,#282828"
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color-link constant.string.char "#BDE6AD,#282828"`
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c, err := ParseColorscheme(testColorscheme)
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c, err := ParseColorscheme("testColorscheme", testColorscheme, nil)
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assert.Nil(t, err)
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fg, bg, _ := c["comment"].Decompose()
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@ -1,34 +1 @@
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color-link default "#F8F8F2,#282828"
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color-link comment "#75715E,#282828"
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color-link identifier "#66D9EF,#282828"
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color-link constant "#AE81FF,#282828"
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color-link constant.string "#E6DB74,#282828"
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color-link constant.string.char "#BDE6AD,#282828"
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color-link statement "#F92672,#282828"
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color-link symbol.operator "#F92671,#282828"
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color-link preproc "#CB4B16,#282828"
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color-link type "#66D9EF,#282828"
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color-link special "#A6E22E,#282828"
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color-link underlined "#D33682,#282828"
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color-link error "bold #CB4B16,#282828"
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color-link todo "bold #D33682,#282828"
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color-link hlsearch "#282828,#E6DB74"
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color-link statusline "#282828,#F8F8F2"
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color-link tabbar "#282828,#F8F8F2"
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color-link indent-char "#505050,#282828"
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color-link line-number "#AAAAAA,#323232"
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color-link current-line-number "#AAAAAA,#282828"
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color-link diff-added "#00AF00"
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color-link diff-modified "#FFAF00"
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color-link diff-deleted "#D70000"
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color-link gutter-error "#CB4B16,#282828"
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color-link gutter-warning "#E6DB74,#282828"
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color-link cursor-line "#323232"
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color-link color-column "#323232"
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#No extended types; Plain brackets.
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color-link type.extended "default"
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#color-link symbol.brackets "default"
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color-link symbol.tag "#AE81FF,#282828"
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color-link match-brace "#282828,#AE81FF"
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color-link tab-error "#D75F5F"
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color-link trailingws "#D75F5F"
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include "monokai"
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@ -236,7 +236,10 @@ Here's a list of subgroups used in micro's built-in syntax files.
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* type.keyword (If you want a special highlight for keywords like `private`)
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In the future, plugins may also be able to use color groups for styling.
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Last but not least it's even possible to use `include` followed by the
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colorscheme name as string to include a different colorscheme within a new one.
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Additionally the groups can then be extended or overwritten. The `default.micro`
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theme can be seen as an example, which links to the chosen default colorscheme.
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## Syntax files
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