From e57f37292628008a6cd5b7d64878146bff99419e Mon Sep 17 00:00:00 2001
From: Sergey Grebenshchikov <sgreben@gmail.com>
Date: Sat, 31 Mar 2018 19:52:46 +0200
Subject: Add full-bw and full-wb canvas types

---
 Makefile                    |   2 +-
 README.md                   |   2 +-
 README.template.md          |   3 ++-
 cmd/jp/main.go              |  23 ++++++++++++++++-------
 docs/hist2d_full_escape.png | Bin 0 -> 113364 bytes
 pkg/draw/full_escape.go     |  41 +++++++++++++++++++++++++++++++++++++++--
 6 files changed, 59 insertions(+), 12 deletions(-)
 create mode 100644 docs/hist2d_full_escape.png

diff --git a/Makefile b/Makefile
index afc6fc5..d3acee4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-VERSION = 1.1.10
+VERSION = 1.1.11
 
 APP      := jp
 PACKAGES := $(shell go list -f {{.Dir}} ./...)
diff --git a/README.md b/README.md
index 692a1da..61a881e 100644
--- a/README.md
+++ b/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 --git a/README.template.md b/README.template.md
index ad8b0cb..6874cff 100644
--- a/README.template.md
+++ b/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 --git a/cmd/jp/main.go b/cmd/jp/main.go
index 6769e1c..cc1d9b8 100644
--- a/cmd/jp/main.go
+++ b/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 --git a/docs/hist2d_full_escape.png b/docs/hist2d_full_escape.png
new file mode 100644
index 0000000..c383126
Binary files /dev/null and b/docs/hist2d_full_escape.png differ
diff --git a/pkg/draw/full_escape.go b/pkg/draw/full_escape.go
index e6a68de..ab0af25 100644
--- a/pkg/draw/full_escape.go
+++ b/pkg/draw/full_escape.go
@@ -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)
 }
-- 
cgit v1.2.3