From 9136c86fc241cfec1a2f561c260bf49ec14113ab Mon Sep 17 00:00:00 2001
From: Juan Placencia <juan@placencia.uno>
Date: Sun, 20 Jun 2021 21:43:39 -0500
Subject: [PATCH] Use temp files and embed external images as base64

---
 .gitignore |  1 -
 Makefile   | 52 ++++++++++++++++++++++++++++++++++++++--------------
 2 files changed, 38 insertions(+), 15 deletions(-)

diff --git a/.gitignore b/.gitignore
index 44176d9..e33609d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-temp.svg
 *.png
diff --git a/Makefile b/Makefile
index b41b419..61a92ca 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,6 @@
 # Variables
+temp_sed_file:=$(shell mktemp).sed
+temp_svg_file:=$(shell mktemp).svg
 ifdef dark
 	dark_color=$(dark)
 endif
@@ -9,12 +11,15 @@ ifdef middle
 	middle_color=$(middle)
 endif
 ifneq ($(wildcard $(dark)),)
+  dark_mime=$(shell file -bN --mime-type $(dark))
 	dark_color=transparent
 endif
 ifneq ($(wildcard $(light)),)
+  light_mime=$(shell file -bN --mime-type $(light))
 	light_color=transparent
 endif
 ifneq ($(wildcard $(middle)),)
+  middle_mime=$(shell file -bN --mime-type $(middle))
 	middle_color=transparent
 endif
 size?=1024
@@ -27,20 +32,39 @@ default: build
 
 # Build process
 build: clean logo.svg
-	@cp logo.svg temp.svg
-	@sed -i 's|fill: black|:fill1:|' temp.svg
-	@sed -i 's|fill: white|:fill2:|' temp.svg
-	@sed -i 's|fill: gray|:fill3:|' temp.svg
-	@sed -i 's|:fill1:|fill: $(dark_color)|' temp.svg
-	@sed -i 's|:fill2:|fill: $(light_color)|' temp.svg
-	@sed -i 's|:fill3:|fill: $(middle_color)|' temp.svg
-	@sed -i 's|dark.png|:image1:|' temp.svg
-	@sed -i 's|light.png|:image2:|' temp.svg
-	@sed -i 's|middle.png|:image3:|' temp.svg
-	@sed -i 's|:image1:|$(dark)|' temp.svg
-	@sed -i 's|:image2:|$(light)|' temp.svg
-	@sed -i 's|:image3:|$(middle)|' temp.svg
-	convert -background none -size $(size)x$(size) temp.svg logo.png
+	@cp logo.svg $(temp_svg_file)
+	@echo 's|fill: black|:fill1:|' >> $(temp_sed_file)
+	@echo 's|fill: white|:fill2:|' >> $(temp_sed_file)
+	@echo 's|fill: gray|:fill3:|' >> $(temp_sed_file)
+	@echo 's|:fill1:|fill: $(dark_color)|' >> $(temp_sed_file)
+	@echo 's|:fill2:|fill: $(light_color)|' >> $(temp_sed_file)
+	@echo 's|:fill3:|fill: $(middle_color)|' >> $(temp_sed_file)
+	@echo 's|dark.png|:image1:|' >> $(temp_sed_file)
+	@echo 's|light.png|:image2:|' >> $(temp_sed_file)
+	@echo 's|middle.png|:image3:|' >> $(temp_sed_file)
+ifdef dark_mime
+	@echo -n 's|:image1:|data:$(dark_mime);base64,' >> $(temp_sed_file)
+	@base64 -w0 < $(dark) >> $(temp_sed_file)
+	@echo '|' >> $(temp_sed_file)
+else
+	@echo 's|:image1:|$(dark)|' >> $(temp_sed_file)
+endif
+ifdef light_mime
+	@echo -n 's|:image2:|data:$(light_mime);base64,' >> $(temp_sed_file)
+	@base64 -w0 < $(light) >> $(temp_sed_file)
+	@echo '|' >> $(temp_sed_file)
+else
+	@echo 's|:image2:|$(light)|' >> $(temp_sed_file)
+endif
+ifdef middle_mime
+	@echo -n 's|:image3:|data:$(middle_mime);base64,' >> $(temp_sed_file)
+	@base64 -w0 < $(middle) >> $(temp_sed_file)
+	@echo '|' >> $(temp_sed_file)
+else
+	@echo 's|:image3:|$(middle)|' >> $(temp_sed_file)
+endif
+	sed -i -f $(temp_sed_file) -- $(temp_svg_file)
+	convert -background none -size $(size)x$(size) $(temp_svg_file) logo.png
 clean:
 	@rm -f logo.png temp.svg