Add blind-rotate-90, blind-rotate-180, and blind-rotate-270

Signed-off-by: Mattias Andrée <maandree@kth.se>

5 files changed, 62 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
index d29a89a..62daebd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,6 @@
 *.o
 *.out
 /blind-*
+!/blind-rotate-90
+!/blind-rotate-180
+!/blind-rotate-270
diff --git a/Makefile b/Makefile
index 690a3e9..cee5f8c 100644
--- a/Makefile
+++ b/Makefile
@@ -33,6 +33,11 @@ BIN =\
 	blind-transpose\
 	blind-write-head
 
+SCRIPTS =\
+	blind-rotate-90\
+	blind-rotate-180\
+	blind-rotate-270
+
 all: $(BIN)
 
 %: %.o util.o stream.o
diff --git a/blind-rotate-180 b/blind-rotate-180
new file mode 100755
index 0000000..73cbd15
--- /dev/null
+++ b/blind-rotate-180
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+if ! test $# = 0; then
+	if test "$1" = --; then
+		shift 1
+	fi
+	if ! test $# = 0; then
+		printf 'usage: %s\n' "$0" >&2
+		exit 1
+	fi
+fi
+
+flip="$(printf '%s\n' "$0" | sed 's/[^/]*$/blind-flip/')"
+flop="$(printf '%s\n' "$0" | sed 's/[^/]*$/blind-flop/')"
+
+"$flip" | "$flop"
diff --git a/blind-rotate-270 b/blind-rotate-270
new file mode 100755
index 0000000..77305ca
--- /dev/null
+++ b/blind-rotate-270
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+if ! test $# = 0; then
+	if test "$1" = --; then
+		shift 1
+	fi
+	if ! test $# = 0; then
+		printf 'usage: %s\n' "$0" >&2
+		exit 1
+	fi
+fi
+
+transpose="$(printf '%s\n' "$0" | sed 's/[^/]*$/blind-transpose/')"
+flop="$(     printf '%s\n' "$0" | sed 's/[^/]*$/blind-flop/')"
+
+"$flop" | "$transpose"
diff --git a/blind-rotate-90 b/blind-rotate-90
new file mode 100755
index 0000000..bbecc5b
--- /dev/null
+++ b/blind-rotate-90
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+set -e
+
+if ! test $# = 0; then
+	if test "$1" = --; then
+		shift 1
+	fi
+	if ! test $# = 0; then
+		printf 'usage: %s\n' "$0" >&2
+		exit 1
+	fi
+fi
+
+transpose="$(printf '%s\n' "$0" | sed 's/[^/]*$/blind-transpose/')"
+flop="$(     printf '%s\n' "$0" | sed 's/[^/]*$/blind-flop/')"
+
+"$transpose" | "$flop"