From 30e09856846e482d1bc805645956d2cfe202e0cc Mon Sep 17 00:00:00 2001
From: Mike Burns <mike@mike-burns.com>
Date: Wed, 10 Jul 2013 23:50:11 +0200
Subject: Add lsrc

The `lsrc` command works just like the `rcup` command but instead of
making symlinks and directories, it just lists all the files that would
be symlinks. It prints the destination (e.g. `~/.foo`) and the source
(`~/.dotfiles/foo`), separated by a colon.

Re-write `rcup` in terms of `lsrc`.
---
 bin/lsrc | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 186 insertions(+)
 create mode 100755 bin/lsrc

(limited to 'bin/lsrc')

diff --git a/bin/lsrc b/bin/lsrc
new file mode 100755
index 0000000..2a1a9e0
--- /dev/null
+++ b/bin/lsrc
@@ -0,0 +1,186 @@
+#!/bin/sh
+
+#set -x
+
+DEST_DIR=$HOME
+DEFAULT_DOTFILES_DIR=$HOME/.dotfiles
+HOSTNAME=`hostname -s`
+DEBUG=:
+PRINT=echo
+VERBOSE=:
+
+pushdir() {
+  DIR_STACK="$DIR_STACK:$PWD/$1"
+  $DEBUG "cd'ing to $1 from `pwd` with stack $DIR_STACK"
+  cd $1
+}
+
+popdir() {
+  current=`echo $DIR_STACK | sed -e 's/.*://g'`
+  prior=`echo $DIR_STACK | sed -e "s|:$current$||" | sed -e 's/.*://g'`
+  DIR_STACK=`echo $DIR_STACK | sed -e 's/:[^:]*$//'`
+  $DEBUG "cd'ing to $prior from `pwd` with stack $DIR_STACK"
+  cd $prior
+}
+
+build_path() {
+  local dest=$1
+  local file=$2
+  local dotted=$3
+
+  if [ $dotted -eq 1 ]; then
+    echo $dest/$file
+  else
+    echo $dest/.$file
+  fi
+}
+
+link_dir() {
+  local dir=$1
+  local dest_dir=$2
+  local dotfiles_dir=$3
+  local dotted=$4
+  local dest_path=`build_path $dest_dir $dir $dotted`
+
+  $VERBOSE "recurring on $dest_path"
+  pushdir $dir
+  for f in *; do
+    $DEBUG "handling the file $f"
+    handle_file $f $dest_path $dotfiles_dir/$dir 1
+  done
+  popdir
+}
+
+link_file() {
+  local file=$1
+  local dest_dir=$2
+  local dotfiles_dir=$3
+  local dotted=$4
+  local dest_file=`build_path $dest_dir $file $dotted`
+
+  $PRINT $dest_file:$dotfiles_dir/$file
+}
+
+handle_file() {
+  local file=$1
+  local dest_dir=$2
+  local dotfiles_dir=$3
+  local dotted=$4
+
+  $DEBUG handle_file $1 $2 $3 $4
+
+  if [ ! -e $file ]; then
+    $VERBOSE "skipping non-existent file $file"
+  elif [ -d $file ]; then
+    link_dir $file $dest_dir $dotfiles_dir $dotted
+  else
+    dest_file=`build_path $dest_dir $file $dotted`
+    link_file $file $dest_dir $dotfiles_dir $dotted
+  fi
+}
+
+metafile() {
+  [ x$2 = 'xhost-' -o x$3 = 'xtag-' -o x$1 = "xRakefile" -o x$1 = "xinstall" ]
+}
+
+handle_command_line() {
+  arg_tags=""
+  verbosity=0
+  version=0
+  dotfiles_dirs=
+  while getopts Vqvt:d: opt; do
+    case "$opt" in
+      t) arg_tags="$arg_tags $OPTARG";;
+      v) verbosity=$(($verbosity + 1));;
+      q) verbosity=$(($verbosity - 1));;
+      d) dotfiles_dirs="$dotfiles_dirs $OPTARG";;
+      V) version=1
+    esac
+  done
+  shift $(($OPTIND-1))
+
+  if [ $version -eq 1 ]; then
+    version rcup
+    exit 0
+  elif [ $verbosity -ge 2 ]; then
+    DEBUG=echo
+    VERBOSE=echo
+    PRINT=echo
+  elif [ $verbosity -eq 1 ]; then
+    DEBUG=:
+    VERBOSE=echo
+    PRINT=echo
+  elif [ $verbosity -eq 0 ]; then
+    DEBUG=:
+    VERBOSE=:
+    PRINT=echo
+  else
+    DEBUG=:
+    VERBOSE=:
+    PRINT=:
+  fi
+
+  if [ "x$arg_tags" != "x" ]; then
+    TAGS=$arg_tags
+  fi
+
+  if [ "x$dotfiles_dirs" != "x" ]; then
+    DOTFILES_DIRS=$dotfiles_dirs
+  fi
+
+  FILES=$@
+}
+
+if [ -e $HOME/.rcrc ]; then
+  . $HOME/.rcrc
+fi
+
+. `dirname $0`/../libexec/rcm/rcm.sh
+handle_command_line $*
+
+if [ "x$DOTFILES_DIRS" = "x" ]; then
+  DOTFILES_DIRS="$DOTFILES_DIRS $DEFAULT_DOTFILES_DIR"
+fi
+
+for DOTFILES_DIR in $DOTFILES_DIRS; do
+
+  if [ ! -d $DOTFILES_DIR ]; then
+    $VERBOSE "skipping non-existent directory: $DOTFILES_DIR" 
+    continue
+  fi
+
+  cd $DOTFILES_DIR
+  DIR_STACK=":$DOTFILES_DIR"
+
+  for file in ${FILES:-*}; do
+    host_portion=`echo $file | sed -e 's/host-.*/host-/'`
+    tag_portion=`echo $file | sed -e 's/tag-.*/tag-/'`
+    if ! metafile $file $host_portion $tag_portion; then
+      handle_file $file $DEST_DIR $DOTFILES_DIR 0
+    fi
+  done
+
+  cd $DOTFILES_DIR
+
+  host_files=$DOTFILES_DIR/host-$HOSTNAME
+  if [ -d $host_files ]; then
+    pushdir `basename $host_files`
+    for file in ${FILES:-*}; do
+      handle_file $file $DEST_DIR $host_files 0
+    done
+    popdir
+  fi
+
+  cd $DOTFILES_DIR
+
+  for tag in $TAGS; do
+    if [ -d tag-$tag ]; then
+      pushdir `basename tag-$tag`
+      for file in ${FILES:-*}; do
+        handle_file $file $DEST_DIR $DOTFILES_DIR/tag-$tag 0
+      done
+      popdir
+    fi
+  done
+
+done
-- 
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