Add full-bw and full-wb canvas types

Author: sgreben

Diff for: Makefile

@@ -1,4 +1,4 @@
-VERSION = 1.1.10
+VERSION = 1.1.11
 
 APP      := jp
 PACKAGES := $(shell go list -f {{.Dir}} ./...)

Diff for: README.md

@@ -74,7 +74,7 @@ Usage of jp:
   -width int
     	Plot width (default 0 (auto))
   -canvas value
-    	Canvas type. One of [full full-escape quarter braille auto] (default auto)
+    	Canvas type. One of [full full-escape full-bw full-wb quarter braille auto] (default auto)
 ```
 
 ## Examples

Diff for: README.template.md

@@ -74,7 +74,7 @@ Usage of jp:
   -width int
     	Plot width (default 0 (auto))
   -canvas value
-    	Canvas type. One of [full full-escape quarter braille auto] (default auto)
+    	Canvas type. One of [full full-escape full-bw full-wb quarter braille auto] (default auto)
 ```
 
 ## Examples
@@ -415,6 +415,7 @@ In case you're on mobile, here's some PNGs of what `jp` output looks like:
 
 ![Line chart](docs/line_chart.png)
 
+![Heatmap](docs/hist2d_full_escape.png)
 
 ## Licensing
 

Diff for: cmd/jp/main.go

@@ -35,11 +35,13 @@ const (
 )
 
 const (
-	canvasTypeFull       = "full"
-	canvasTypeFullEscape = "full-escape"
-	canvasTypeQuarter    = "quarter"
-	canvasTypeBraille    = "braille"
-	canvasTypeAuto       = "auto"
+	canvasTypeFull         = "full"
+	canvasTypeFullEscape   = "full-escape"
+	canvasTypeFullEscapeBW = "full-bw"
+	canvasTypeFullEscapeWB = "full-wb"
+	canvasTypeQuarter      = "quarter"
+	canvasTypeBraille      = "braille"
+	canvasTypeAuto         = "auto"
 )
 
 const (
@@ -63,6 +65,8 @@ var config = configuration{
 		Choices: []string{
 			canvasTypeFull,
 			canvasTypeFullEscape,
+			canvasTypeFullEscapeBW,
+			canvasTypeFullEscapeWB,
 			canvasTypeQuarter,
 			canvasTypeBraille,
 			canvasTypeAuto,
@@ -175,7 +179,7 @@ func main() {
 		p = &draw.Quarter{Buffer: buffer}
 	case canvasTypeFull:
 		p = &draw.Full{Buffer: buffer}
-	case canvasTypeFullEscape:
+	case canvasTypeFullEscape, canvasTypeFullEscapeWB, canvasTypeFullEscapeBW:
 		p = &draw.Full{Buffer: buffer}
 	}
 	p.Clear()
@@ -193,8 +197,13 @@ func main() {
 	case plotTypeHist2D:
 		out = hist2D(x, y, c, config.HistBins)
 	}
-	if config.CanvasType.Value == canvasTypeFullEscape {
+	switch config.CanvasType.Value {
+	case canvasTypeFullEscape:
 		out = draw.FullEscape(out)
+	case canvasTypeFullEscapeBW:
+		out = draw.FullEscapeBW(out)
+	case canvasTypeFullEscapeWB:
+		out = draw.FullEscapeWB(out)
 	}
 	fmt.Println(out)
 }

Diff for: docs/hist2d_full_escape.png

@@ -2,8 +2,45 @@ package draw
 
 import "strings"
 
-const invertedSpace = "\033[7m \033[27m"
+var invertEscape = replacer(map[rune]string{
+	'█': "\033[7m \033[27m",
+})
+
+var colorEscapeBW = replacer(map[rune]string{
+	'█': "\033[48;5;231m \033[49m",
+	'▓': "\033[48;5;252m \033[49m",
+	'▒': "\033[48;5;248m \033[49m",
+	'░': "\033[48;5;240m \033[49m",
+	'·': "\033[48;5;236m \033[49m",
+	' ': "\033[48;5;232m ",
+})
+
+var colorEscapeWB = replacer(map[rune]string{
+	'█': "\033[48;5;232m \033[49m",
+	'▓': "\033[48;5;236m \033[49m",
+	'▒': "\033[48;5;240m \033[49m",
+	'░': "\033[48;5;248m \033[49m",
+	'·': "\033[48;5;252m \033[49m",
+	' ': "\033[48;5;231m ",
+})
+
+func replacer(m map[rune]string) *strings.Replacer {
+	r := make([]string, 0, len(m)*2)
+	for old, new := range m {
+		r = append(r, string(old))
+		r = append(r, new)
+	}
+	return strings.NewReplacer(r...)
+}
 
 func FullEscape(full string) string {
-	return strings.Replace(full, string(fullBlock), invertedSpace, -1)
+	return invertEscape.Replace(full)
+}
+
+func FullEscapeBW(full string) string {
+	return colorEscapeBW.Replace(full)
+}
+
+func FullEscapeWB(full string) string {
+	return colorEscapeWB.Replace(full)
 }