Files
zyedidia.micro/cmd/micro/colorscheme.go
Zachary Yedidia 9094c174cc Initial support for terminal within micro
This commit adds beta support for running a shell or other program
within a micro view.

Use the `> term` command. With no arguments, `term` will open your
shell in interactive mode. You can also run an arbitrary command
with `> term cmd` and the command with be executed and output
shown. One issue at the moment is the terminal window will close
immediately after the process dies.

No mouse events are sent to programs running within micro.

Ref #243
2018-01-04 17:03:08 -05:00

261 lines
9.4 KiB
Go

package main
import (
"fmt"
"regexp"
"strconv"
"strings"
"github.com/zyedidia/tcell"
)
// Colorscheme is a map from string to style -- it represents a colorscheme
type Colorscheme map[string]tcell.Style
// The current colorscheme
var colorscheme Colorscheme
// GetColor takes in a syntax group and returns the colorscheme's style for that group
func GetColor(color string) tcell.Style {
st := defStyle
if color == "" {
return st
}
groups := strings.Split(color, ".")
if len(groups) > 1 {
curGroup := ""
for i, g := range groups {
if i != 0 {
curGroup += "."
}
curGroup += g
if style, ok := colorscheme[curGroup]; ok {
st = style
}
}
} else if style, ok := colorscheme[color]; ok {
st = style
} else {
st = StringToStyle(color)
}
return st
}
// ColorschemeExists checks if a given colorscheme exists
func ColorschemeExists(colorschemeName string) bool {
return FindRuntimeFile(RTColorscheme, colorschemeName) != nil
}
// InitColorscheme picks and initializes the colorscheme when micro starts
func InitColorscheme() {
colorscheme = make(Colorscheme)
defStyle = tcell.StyleDefault.
Foreground(tcell.ColorDefault).
Background(tcell.ColorDefault)
if screen != nil {
// screen.SetStyle(defStyle)
}
LoadDefaultColorscheme()
}
// LoadDefaultColorscheme loads the default colorscheme from $(configDir)/colorschemes
func LoadDefaultColorscheme() {
LoadColorscheme(globalSettings["colorscheme"].(string))
}
// LoadColorscheme loads the given colorscheme from a directory
func LoadColorscheme(colorschemeName string) {
file := FindRuntimeFile(RTColorscheme, colorschemeName)
if file == nil {
TermMessage(colorschemeName, "is not a valid colorscheme")
} else {
if data, err := file.Data(); err != nil {
TermMessage("Error loading colorscheme:", err)
} else {
colorscheme = ParseColorscheme(string(data))
}
}
}
// ParseColorscheme parses the text definition for a colorscheme and returns the corresponding object
// Colorschemes are made up of color-link statements linking a color group to a list of colors
// For example, color-link keyword (blue,red) makes all keywords have a blue foreground and
// red background
func ParseColorscheme(text string) Colorscheme {
parser := regexp.MustCompile(`color-link\s+(\S*)\s+"(.*)"`)
lines := strings.Split(text, "\n")
c := make(Colorscheme)
for _, line := range lines {
if strings.TrimSpace(line) == "" ||
strings.TrimSpace(line)[0] == '#' {
// Ignore this line
continue
}
matches := parser.FindSubmatch([]byte(line))
if len(matches) == 3 {
link := string(matches[1])
colors := string(matches[2])
style := StringToStyle(colors)
c[link] = style
if link == "default" {
defStyle = style
}
if screen != nil {
// screen.SetStyle(defStyle)
}
} else {
fmt.Println("Color-link statement is not valid:", line)
}
}
return c
}
// StringToStyle returns a style from a string
// The strings must be in the format "extra foregroundcolor,backgroundcolor"
// The 'extra' can be bold, reverse, or underline
func StringToStyle(str string) tcell.Style {
var fg, bg string
spaceSplit := strings.Split(str, " ")
var split []string
if len(spaceSplit) > 1 {
split = strings.Split(spaceSplit[1], ",")
} else {
split = strings.Split(str, ",")
}
if len(split) > 1 {
fg, bg = split[0], split[1]
} else {
fg = split[0]
}
fg = strings.TrimSpace(fg)
bg = strings.TrimSpace(bg)
var fgColor, bgColor tcell.Color
if fg == "" {
fgColor, _, _ = defStyle.Decompose()
} else {
fgColor = StringToColor(fg)
}
if bg == "" {
_, bgColor, _ = defStyle.Decompose()
} else {
bgColor = StringToColor(bg)
}
style := defStyle.Foreground(fgColor).Background(bgColor)
if strings.Contains(str, "bold") {
style = style.Bold(true)
}
if strings.Contains(str, "reverse") {
style = style.Reverse(true)
}
if strings.Contains(str, "underline") {
style = style.Underline(true)
}
return style
}
// StringToColor returns a tcell color from a string representation of a color
// We accept either bright... or light... to mean the brighter version of a color
func StringToColor(str string) tcell.Color {
switch str {
case "black":
return tcell.ColorBlack
case "red":
return tcell.ColorMaroon
case "green":
return tcell.ColorGreen
case "yellow":
return tcell.ColorOlive
case "blue":
return tcell.ColorNavy
case "magenta":
return tcell.ColorPurple
case "cyan":
return tcell.ColorTeal
case "white":
return tcell.ColorSilver
case "brightblack", "lightblack":
return tcell.ColorGray
case "brightred", "lightred":
return tcell.ColorRed
case "brightgreen", "lightgreen":
return tcell.ColorLime
case "brightyellow", "lightyellow":
return tcell.ColorYellow
case "brightblue", "lightblue":
return tcell.ColorBlue
case "brightmagenta", "lightmagenta":
return tcell.ColorFuchsia
case "brightcyan", "lightcyan":
return tcell.ColorAqua
case "brightwhite", "lightwhite":
return tcell.ColorWhite
case "default":
return tcell.ColorDefault
default:
// Check if this is a 256 color
if num, err := strconv.Atoi(str); err == nil {
return GetColor256(num)
}
// Probably a truecolor hex value
return tcell.GetColor(str)
}
}
// GetColor256 returns the tcell color for a number between 0 and 255
func GetColor256(color int) tcell.Color {
colors := []tcell.Color{tcell.ColorBlack, tcell.ColorMaroon, tcell.ColorGreen,
tcell.ColorOlive, tcell.ColorNavy, tcell.ColorPurple,
tcell.ColorTeal, tcell.ColorSilver, tcell.ColorGray,
tcell.ColorRed, tcell.ColorLime, tcell.ColorYellow,
tcell.ColorBlue, tcell.ColorFuchsia, tcell.ColorAqua,
tcell.ColorWhite, tcell.Color16, tcell.Color17, tcell.Color18, tcell.Color19, tcell.Color20,
tcell.Color21, tcell.Color22, tcell.Color23, tcell.Color24, tcell.Color25, tcell.Color26, tcell.Color27, tcell.Color28,
tcell.Color29, tcell.Color30, tcell.Color31, tcell.Color32, tcell.Color33, tcell.Color34, tcell.Color35, tcell.Color36,
tcell.Color37, tcell.Color38, tcell.Color39, tcell.Color40, tcell.Color41, tcell.Color42, tcell.Color43, tcell.Color44,
tcell.Color45, tcell.Color46, tcell.Color47, tcell.Color48, tcell.Color49, tcell.Color50, tcell.Color51, tcell.Color52,
tcell.Color53, tcell.Color54, tcell.Color55, tcell.Color56, tcell.Color57, tcell.Color58, tcell.Color59, tcell.Color60,
tcell.Color61, tcell.Color62, tcell.Color63, tcell.Color64, tcell.Color65, tcell.Color66, tcell.Color67, tcell.Color68,
tcell.Color69, tcell.Color70, tcell.Color71, tcell.Color72, tcell.Color73, tcell.Color74, tcell.Color75, tcell.Color76,
tcell.Color77, tcell.Color78, tcell.Color79, tcell.Color80, tcell.Color81, tcell.Color82, tcell.Color83, tcell.Color84,
tcell.Color85, tcell.Color86, tcell.Color87, tcell.Color88, tcell.Color89, tcell.Color90, tcell.Color91, tcell.Color92,
tcell.Color93, tcell.Color94, tcell.Color95, tcell.Color96, tcell.Color97, tcell.Color98, tcell.Color99, tcell.Color100,
tcell.Color101, tcell.Color102, tcell.Color103, tcell.Color104, tcell.Color105, tcell.Color106, tcell.Color107, tcell.Color108,
tcell.Color109, tcell.Color110, tcell.Color111, tcell.Color112, tcell.Color113, tcell.Color114, tcell.Color115, tcell.Color116,
tcell.Color117, tcell.Color118, tcell.Color119, tcell.Color120, tcell.Color121, tcell.Color122, tcell.Color123, tcell.Color124,
tcell.Color125, tcell.Color126, tcell.Color127, tcell.Color128, tcell.Color129, tcell.Color130, tcell.Color131, tcell.Color132,
tcell.Color133, tcell.Color134, tcell.Color135, tcell.Color136, tcell.Color137, tcell.Color138, tcell.Color139, tcell.Color140,
tcell.Color141, tcell.Color142, tcell.Color143, tcell.Color144, tcell.Color145, tcell.Color146, tcell.Color147, tcell.Color148,
tcell.Color149, tcell.Color150, tcell.Color151, tcell.Color152, tcell.Color153, tcell.Color154, tcell.Color155, tcell.Color156,
tcell.Color157, tcell.Color158, tcell.Color159, tcell.Color160, tcell.Color161, tcell.Color162, tcell.Color163, tcell.Color164,
tcell.Color165, tcell.Color166, tcell.Color167, tcell.Color168, tcell.Color169, tcell.Color170, tcell.Color171, tcell.Color172,
tcell.Color173, tcell.Color174, tcell.Color175, tcell.Color176, tcell.Color177, tcell.Color178, tcell.Color179, tcell.Color180,
tcell.Color181, tcell.Color182, tcell.Color183, tcell.Color184, tcell.Color185, tcell.Color186, tcell.Color187, tcell.Color188,
tcell.Color189, tcell.Color190, tcell.Color191, tcell.Color192, tcell.Color193, tcell.Color194, tcell.Color195, tcell.Color196,
tcell.Color197, tcell.Color198, tcell.Color199, tcell.Color200, tcell.Color201, tcell.Color202, tcell.Color203, tcell.Color204,
tcell.Color205, tcell.Color206, tcell.Color207, tcell.Color208, tcell.Color209, tcell.Color210, tcell.Color211, tcell.Color212,
tcell.Color213, tcell.Color214, tcell.Color215, tcell.Color216, tcell.Color217, tcell.Color218, tcell.Color219, tcell.Color220,
tcell.Color221, tcell.Color222, tcell.Color223, tcell.Color224, tcell.Color225, tcell.Color226, tcell.Color227, tcell.Color228,
tcell.Color229, tcell.Color230, tcell.Color231, tcell.Color232, tcell.Color233, tcell.Color234, tcell.Color235, tcell.Color236,
tcell.Color237, tcell.Color238, tcell.Color239, tcell.Color240, tcell.Color241, tcell.Color242, tcell.Color243, tcell.Color244,
tcell.Color245, tcell.Color246, tcell.Color247, tcell.Color248, tcell.Color249, tcell.Color250, tcell.Color251, tcell.Color252,
tcell.Color253, tcell.Color254, tcell.Color255,
}
if color >= 0 && color < len(colors) {
return colors[color]
}
return tcell.ColorDefault
}