From ca20e3e759d168a9f4dacdb05dad2a2b295f458b Mon Sep 17 00:00:00 2001
From: Tom Ryder <tom@sanctum.geek.nz>
Date: Mon, 2 Jan 2017 15:50:52 +1300
Subject: Add marked-dir tools

---
 sh/shrc.d/gd.sh  | 18 ++++++++++++++++++
 sh/shrc.d/md.sh  | 21 +++++++++++++++++++++
 sh/shrc.d/pmd.sh |  8 ++++++++
 sh/shrc.d/xd.sh  | 24 ++++++++++++++++++++++++
 4 files changed, 71 insertions(+)
 create mode 100644 sh/shrc.d/gd.sh
 create mode 100644 sh/shrc.d/md.sh
 create mode 100644 sh/shrc.d/pmd.sh
 create mode 100644 sh/shrc.d/xd.sh

(limited to 'sh/shrc.d')

diff --git a/sh/shrc.d/gd.sh b/sh/shrc.d/gd.sh
new file mode 100644
index 00000000..754bd8ff
--- /dev/null
+++ b/sh/shrc.d/gd.sh
@@ -0,0 +1,18 @@
+# Go to marked directory
+gd() {
+
+    # Refuse to deal with unwanted arguments
+    if [ "$#" -gt 0 ] ; then
+        printf >&2 'gd(): Unspecified argument\n'
+        return 2
+    fi
+
+    # Complain if mark not actually set yet
+    if ! [ -n "$PMD" ] ; then
+        printf >&2 'gd(): Mark not set\n'
+        return 2
+    fi
+
+    # Go to the marked directory
+    cd -- "$PMD"
+}
diff --git a/sh/shrc.d/md.sh b/sh/shrc.d/md.sh
new file mode 100644
index 00000000..cf44abb3
--- /dev/null
+++ b/sh/shrc.d/md.sh
@@ -0,0 +1,21 @@
+# Set marked directory to given dir or current dir
+md() {
+
+    # Accept up to one argument
+    if [ "$#" -gt 1 ] ; then
+        printf >&2 'md(): Too many arguments\n'
+        return 2
+    fi
+
+    # If first arg unset or empty, assume the user means the current dir
+    [ -n "$1" ] || set -- "$PWD"
+
+    # If specified path not a directory, refuse to mark it
+    if ! [ -d "$1" ] ; then
+        printf >&2 'md(): Not a directory\n'
+        return 2
+    fi
+
+    # Save the specified path in the marked directory var
+    PMD=$1
+}
diff --git a/sh/shrc.d/pmd.sh b/sh/shrc.d/pmd.sh
new file mode 100644
index 00000000..03f18b7b
--- /dev/null
+++ b/sh/shrc.d/pmd.sh
@@ -0,0 +1,8 @@
+# Print the marked directory
+pmd() {
+    if ! [ -n "$PMD" ] ; then
+        printf >&2 'pmd(): Mark not set\n'
+        return 2
+    fi
+    printf '%s\n' "$PMD"
+}
diff --git a/sh/shrc.d/xd.sh b/sh/shrc.d/xd.sh
new file mode 100644
index 00000000..01b8fd3a
--- /dev/null
+++ b/sh/shrc.d/xd.sh
@@ -0,0 +1,24 @@
+# Swap current directory with marked directory
+xd() {
+
+    # Refuse to deal with unwanted arguments
+    if [ "$#" -gt 0 ] ; then
+        printf >&2 'gd(): Unspecified argument\n'
+        return 2
+    fi
+
+    # Complain if mark not actually set yet
+    if ! [ -n "$PMD" ] ; then
+        printf >&2 'gd(): Mark not set\n'
+        return 2
+    fi
+
+    # Put the current and marked directories into positional params
+    set -- "$PMD" "$PWD"
+
+    # Try to change into the marked directory
+    cd -- "$1" || return
+    
+    # If that worked, we can swap the mark, and we're done
+    PMD=$2
+}
-- 
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