3 files changed, 111 insertions, 0 deletions
diff --git a/check/check-icons-listing b/check/check-icons-listing
new file mode 100755
index 0000000..404e089
--- /dev/null
+++ b/check/check-icons-listing
@@ -0,0 +1,89 @@
+#!/bin/sh
+set -e
+
+rel () {
+	to="$1"
+	from="$2"
+	while test $(printf '%s\n' "$to" "$from" | grep / | wc -l) = 2; do
+		todir="$(printf '%s\n' "$to" | cut -d / -f 1)"
+		fromdir="$(printf '%s\n' "$from" | cut -d / -f 1)"
+		if test ! "$todir" = "$fromdir"; then
+			break
+		fi
+		to="$(printf '%s\n' "$to" | cut -d / -f 2-)"
+		from="$(printf '%s\n' "$frm" | cut -d / -f 2-)"
+	done
+	while test -n "$(printf '%s\n' "$from" | grep /)"; do
+		from="$(printf '%s\n' "$from" | cut -d / -f 2-)"
+		to="../$to"
+	done
+	printf '%s\n' "$to"
+}
+
+lines=$(sed 's/\\$//' < icons.mk | sed '/^\s*\(#.*\|\)$/d' | sed 1d | wc -l)
+test ! $lines = 0
+
+test $(sed 's/\\$//' < icons.mk | sed '/^\s*\(#.*\|\)$/d' | sed 1d | sed 's/\t/ /g' | grep '^ ' | wc -l) = $lines
+
+test $(sed 's/\\$//' < icons.mk | sed '/^\s*\(#.*\|\)$/d' | sed '1s/^.*$//' | grep -n ' ' | wc -l) = 0
+
+stack=""
+i=0
+sed 's/\\$//' < icons.mk | sed '/^\s*\(#.*\|\)$/d' | sed 1d | sed 's/^\t/x/' | while read L; do
+	i=$(( i + 1 ))
+	printf 'Checking %i of %i\n\033[A' $i $lines >&2
+	tabs=0
+	while test ! $(printf '%s\n' "$L" | sed -n '/^x\t/p' | wc -l) = 0; do
+		L="$(printf '%s\n' "$L" | sed 's/^x\t/x/')"
+		tabs=$(( tabs + 1 ))
+	done
+	L="$(printf '%s\n' "$L" | sed 's/^x//')"
+	f="scalable/$L.svg"
+	if test ! $(printf '%s\n' $f | wc -l) = 1; then
+		printf '\033[K%s contains whitespace\n' "$L" >&2
+		exit 1
+	fi
+	tabsplus1=$(( tabs + 1 ))
+	if test -z "$(printf '%s\n' $stack x | sed -n ${tabsplus1}p)"; then
+		printf '\033[K%s is overtabulated\n' "$L" >&2
+		exit 1
+	else
+		stack="$(printf '%s\n' $stack | head -n $tabs; printf '%s\n' "$L")"
+	fi
+	if test ! -e "$f"; then
+		if test -L "$f"; then
+			printf '\033[K%s is a dangling symlink\n' "$L" >&2
+		else
+			printf '\033[K%s is listed but does not exist\n' "$L" >&2
+		fi
+		exit 1
+	fi
+	if test $tabs = 0; then
+		if test -L "$f"; then
+			printf '\033[K%s is a symlink but not indented\n' "$L" >&2
+			exit 1
+		fi
+	else
+		goal_="$(printf '%s\n' $stack | sed -n "${tabs}p")"
+		if test ! -L "$f"; then
+			printf '\033[K%s is not a symlink but listed as linking to %s\n' "$L" "$goal" >&2
+			exit 1
+		fi
+		target="$(realpath -- "$f")"
+		goal="$(realpath -- "scalable/${goal_}.svg")"
+		if test "$target" = "$goal"; then
+			diff="same real file"
+		else
+			diff="different real file"
+		fi
+		target="$(readlink -- "$f")"
+		goal="$(rel "${goal_}.svg" "$L.svg")"
+		if test "$target" = "./$goal"; then
+			ln -sf -- "$target" "$f"
+		elif test ! "$target" = "$goal"; then
+			printf '\033[K%s links to %s but should link to %s (%s)\n' "$L" "$target" "$goal" "$diff" >&2
+			exit 1
+		fi
+	fi
+done
+printf '\033[K' >&2
diff --git a/check/find-errors b/check/find-errors
new file mode 100755
index 0000000..c557a4b
--- /dev/null
+++ b/check/find-errors
@@ -0,0 +1,4 @@
+#!/bin/sh
+! grep -ro '#[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]' scalable/ \
+| tr 'A-F' 'a-f' \
+| grep -v '#\(bebebe\|ef2929\|f57900\|32a679\|cd656c\|d69553\|ccad47\|32a679\|00a09f\|2495be\|a46eb0\|32a678\)'
diff --git a/check/find-unlisted-icons b/check/find-unlisted-icons
new file mode 100755
index 0000000..f493178
--- /dev/null
+++ b/check/find-unlisted-icons
@@ -0,0 +1,18 @@
+#!/bin/sh
+set -e
+
+for f in scalable/*/*.svg; do
+	if test -e "$f"; then
+		printf '%s\n' "$f"
+	fi
+done | sed 's/^scalable\/\(.*\)\.svg$/\1/' | sort > "/tmp/pid-$$-a"
+
+sed 's/\\$//' < icons.mk | sed '/^\s*\(#.*\|\)$/d' | sed 1d | tr -d '\t' | sort > "/tmp/pid-$$-b"
+
+unlisted="$(comm -23 "/tmp/pid-$$-a" "/tmp/pid-$$-b")"
+rm "/tmp/pid-$$-a" "/tmp/pid-$$-b"
+
+if test -n "$unlisted"; then
+	printf '%s\n' 'The following icons exist but are not listed in icons.mk' "$unlisted" >&2
+	exit 1
+fi