Add _clean_attrs.sh script

tools/README.md

@@ -1,6 +1,7 @@
 # Tools
 
 * `ffsvg.sh PATH...` — finds, fixes and cleans SVG files
+* `_clean_attrs.sh FILE...` — removes unused attributes and removes attributes with default values from elements inside SVG files (part of `ffsvg.sh`)
 * `_clean_style_attr.sh FILE...` — removes unused properties and removes properties with default values from style attributes inside SVG files (part of `ffsvg.sh`)
 * `_fix_color_scheme.sh FILE...` — looks in the SVG files for certain colors and replaces them with the corresponding stylesheet class. Fixes a color scheme after Inkscape (part of `ffsvg.sh`)
 * `_svgo.yml` — [SVGO](https://github.com/svg/svgo) configuraion (part of `ffsvg.sh`)

tools/_clean_attrs.sh

@@ -0,0 +1,96 @@
+#!/bin/sh
+#
+# Written in 2016 by Sergei Eremenko <https://github.com/SmartFinn>
+#
+# To the extent possible under law, the author(s) have dedicated all copyright
+# and related and neighboring rights to this software to the public domain
+# worldwide. This software is distributed without any warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication along
+# with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+#
+# Description:
+#  This script removes unused attributes and removes attributes with default
+#  values from elements.
+#  More details https://www.w3.org/TR/SVG/attindex.html
+#
+# Usage:
+#  _clean_attrs.sh FILE...
+
+set -e
+
+# remove unused attributes
+#  - properties in a style attribute has higher priority
+sed -i --regexp-extended \
+	-e 's/[ ]id="circle[0-9][^ ]*"//gI' \
+	-e 's/[ ]id="defs[0-9][^ ]*"//gI' \
+	-e 's/[ ]id="g[0-9][^ ]*"//gI' \
+	-e 's/[ ]id="path[0-9][^ ]*"//gI' \
+	-e 's/[ ]id="rect[0-9][^ ]*"//gI' \
+	-e 's/[ ]id="svg[0-9][^ ]*"//gI' \
+	-e '/style=/ {
+		/fill:[^;"]/ s/[ ]fill="[^"]+"//gI
+	}' \
+	-e '/style=/ {
+		/[^-]opacity:[^;"]/ s/[ ]opacity="[^"]+"//gI
+	}' \
+	"$@"
+
+
+# remove attributes with default values
+sed -i --regexp-extended \
+	-e 's/[ ]alignment-baseline="auto"//gI' \
+	-e 's/[ ]baseline-shift="baseline"//gI' \
+	-e 's/[ ]clip-path="none"//gI' \
+	-e 's/[ ]clip-rule="nonzero"//gI' \
+	-e 's/[ ]clip="auto"//gI' \
+	-e 's/[ ]color-interpolation-filters="linearRGB"//gI' \
+	-e 's/[ ]color-interpolation="sRGB"//gI' \
+	-e 's/[ ]color-profile="auto"//gI' \
+	-e 's/[ ]color-rendering="auto"//gI' \
+	-e 's/[ ]cursor="auto"//gI' \
+	-e 's/[ ]direction="ltr"//gI' \
+	-e 's/[ ]display="inline"//gI' \
+	-e 's/[ ]dominant-baseline="auto"//gI' \
+	-e 's/[ ]enable-background="accumulate"//gI' \
+	-e 's/[ ]fill-opacity="[1-9][0-9.]*"//gI' \
+	-e 's/[ ]fill-rule="nonzero"//gI' \
+	-e 's/[ ]fill="(#000|#000000|black)"//gI' \
+	-e 's/[ ]filter="none"//gI' \
+	-e 's/[ ]flood-color="(#000|#000000|black)"//gI' \
+	-e 's/[ ]flood-opacity="[1-9][0-9.]*"//gI' \
+	-e 's/[ ]font-size-adjust="none"//gI' \
+	-e 's/[ ]font-size="medium"//gI' \
+	-e 's/[ ]font-stretch="normal"//gI' \
+	-e 's/[ ]font-style="normal"//gI' \
+	-e 's/[ ]font-variant="normal"//gI' \
+	-e 's/[ ]font-weight="normal"//gI' \
+	-e 's/[ ]glyph-orientation-horizontal="0deg"//gI' \
+	-e 's/[ ]glyph-orientation-vertical="auto"//gI' \
+	-e 's/[ ]image-rendering="auto"//gI' \
+	-e 's/[ ]kerning="auto"//gI' \
+	-e 's/[ ]letter-spacing="normal"//gI' \
+	-e 's/[ ]marker-end="none"//gI' \
+	-e 's/[ ]marker-mid="none"//gI' \
+	-e 's/[ ]marker-start="none"//gI' \
+	-e 's/[ ]mask="none"//gI' \
+	-e 's/[ ]opacity="[1-9][0-9.]*"//gI' \
+	-e 's/[ ]pointer-events="visiblePainted"//gI' \
+	-e 's/[ ]shape-rendering="auto"//gI' \
+	-e 's/[ ]stroke-dasharray="none"//gI' \
+	-e 's/[ ]stroke-dashoffset="0"//gI' \
+	-e 's/[ ]stroke-linecap="butt"//gI' \
+	-e 's/[ ]stroke-linejoin="miter"//gI' \
+	-e 's/[ ]stroke-miterlimit="4"//gI' \
+	-e 's/[ ]stroke-opacity="[1-9][0-9.]*"//gI' \
+	-e 's/[ ]stroke-width="1"//gI' \
+	-e 's/[ ]stroke="none"//gI' \
+	-e 's/[ ]text-anchor="start"//gI' \
+	-e 's/[ ]text-decoration="none"//gI' \
+	-e 's/[ ]text-rendering="auto"//gI' \
+	-e 's/[ ]unicode-bidi="normal"//gI' \
+	-e 's/[ ]visibility="visible"//gI' \
+	-e 's/[ ]word-spacing="normal"//gI' \
+	-e 's/[ ]writing-mode="lr-tb"//gI' \
+	"$@"

tools/ffsvg.sh

@@ -29,6 +29,9 @@ _run_helpers() {
 	# fix a color scheme
 	eval "$SCRIPT_DIR/_fix_color_scheme.sh"	"$1"
 
+	# clear attributes
+	eval "$SCRIPT_DIR/_clean_attrs.sh" "$1"
+
 	# clear a style attribute
 	eval "$SCRIPT_DIR/_clean_style_attr.sh"	"$1"
 }