From 0c1737f98783025b28183cc0d235ceafe9898f17 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Thu, 8 May 2014 10:32:43 -0700
Subject: [PATCH] Update nvm to the tagged v0.7.0 release

---
 ci_environment/nodejs/files/default/nvm.sh | 101 ++++++++++++++-------
 1 file changed, 67 insertions(+), 34 deletions(-)

diff --git a/ci_environment/nodejs/files/default/nvm.sh b/ci_environment/nodejs/files/default/nvm.sh
index dbd171126..22b5ed0e3 100644
--- a/ci_environment/nodejs/files/default/nvm.sh
+++ b/ci_environment/nodejs/files/default/nvm.sh
@@ -34,11 +34,30 @@ if [ -z "$NVM_NODEJS_ORG_MIRROR" ]; then
   export NVM_NODEJS_ORG_MIRROR="http://nodejs.org/dist"
 fi
 
+# Traverse up in directory tree to find containing folder
+nvm_find_up() {
+  local path
+  path=$PWD
+  while [ "$path" != "" ] && [ ! -f "$path/$1" ]; do
+    path=${path%/*}
+  done
+  echo "$path"
+}
+
+
+nvm_find_nvmrc() {
+  local dir="$(nvm_find_up '.nvmrc')"
+  if [ -e "$dir/.nvmrc" ]; then
+    echo "$dir/.nvmrc"
+  fi
+}
+
 # Obtain nvm version from rc file
 nvm_rc_version() {
-  if [ -e .nvmrc ]; then
-    NVM_RC_VERSION=`cat .nvmrc | head -n 1`
-    echo "Found .nvmrc files with version <$NVM_RC_VERSION>"
+  local NVMRC_PATH="$(nvm_find_nvmrc)"
+  if [ -e "$NVMRC_PATH" ]; then
+    NVM_RC_VERSION=`cat "$NVMRC_PATH" | head -n 1`
+    echo "Found '$NVMRC_PATH' with version <$NVM_RC_VERSION>"
   fi
 }
 
@@ -78,6 +97,18 @@ nvm_format_version() {
   echo "$1" | sed -e 's/^\([0-9]\)/v\1/g'
 }
 
+nvm_strip_path() {
+  echo "$1" | sed -e "s#$NVM_DIR/[^/]*$2[^:]*:##g" -e "s#:$NVM_DIR/[^/]*$2[^:]*##g" -e "s#$NVM_DIR/[^/]*$2[^:]*##g"
+}
+
+nvm_prepend_path() {
+  if [ -z "$1" ]; then
+    echo "$2"
+  else
+    echo "$2:$1"
+  fi
+}
+
 nvm_binary_available() {
   # binaries started with node 0.8.6
   local MINIMAL="0.8.6"
@@ -287,7 +318,16 @@ nvm() {
         shift
       done
 
-      [ -d "$NVM_DIR/$VERSION" ] && echo "$VERSION is already installed." && return
+      if [ -d "$NVM_DIR/$VERSION" ]; then
+        echo "$VERSION is already installed."
+        nvm use "$VERSION"
+        return $?
+      fi
+
+      if [ "$VERSION" = "N/A" ]; then
+        echo "Version '$provided_version' not found - try \`nvm ls-remote\` to browse available versions."
+        return 3
+      fi
 
       # skip binary install if no binary option specified.
       if [ $nobinary -ne 1 ]; then
@@ -400,20 +440,20 @@ nvm() {
     ;;
     "deactivate" )
       if [ `expr "$PATH" : ".*$NVM_DIR/.*/bin.*"` != 0 ] ; then
-        export PATH=${PATH%$NVM_DIR/*/bin*}${PATH#*$NVM_DIR/*/bin:}
+        export PATH=`nvm_strip_path "$PATH" "/bin"`
         hash -r
         echo "$NVM_DIR/*/bin removed from \$PATH"
       else
         echo "Could not find $NVM_DIR/*/bin in \$PATH"
       fi
       if [ `expr "$MANPATH" : ".*$NVM_DIR/.*/share/man.*"` != 0 ] ; then
-        export MANPATH=${MANPATH%$NVM_DIR/*/share/man*}${MANPATH#*$NVM_DIR/*/share/man:}
+        export MANPATH=`nvm_strip_path "$MANPATH" "/share/man"`
         echo "$NVM_DIR/*/share/man removed from \$MANPATH"
       else
         echo "Could not find $NVM_DIR/*/share/man in \$MANPATH"
       fi
       if [ `expr "$NODE_PATH" : ".*$NVM_DIR/.*/lib/node_modules.*"` != 0 ] ; then
-        export NODE_PATH=${NODE_PATH%$NVM_DIR/*/lib/node_modules*}${NODE_PATH#*$NVM_DIR/*/lib/node_modules:}
+        export NODE_PATH=`nvm_strip_path "$NODE_PATH" "/lib/node_modules"`
         echo "$NVM_DIR/*/lib/node_modules removed from \$NODE_PATH"
       else
         echo "Could not find $NVM_DIR/*/lib/node_modules in \$NODE_PATH"
@@ -422,7 +462,7 @@ nvm() {
     "use" )
       if [ $# -eq 0 ]; then
         nvm help
-        return
+        return 127
       fi
       if [ $# -eq 1 ]; then
         nvm_rc_version
@@ -434,7 +474,7 @@ nvm() {
       fi
       if [ -z "$VERSION" ]; then
         nvm help
-        return
+        return 127
       fi
       if [ -z "$VERSION" ]; then
         VERSION=`nvm_version $2`
@@ -443,25 +483,21 @@ nvm() {
         echo "$VERSION version is not installed yet"
         return 1
       fi
-      if [ `expr "$PATH" : ".*$NVM_DIR/.*/bin"` != 0 ]; then
-        PATH=${PATH%$NVM_DIR/*/bin*}$NVM_DIR/$VERSION/bin${PATH#*$NVM_DIR/*/bin}
-      else
-        PATH="$NVM_DIR/$VERSION/bin:$PATH"
-      fi
+      # Strip other version from PATH
+      PATH=`nvm_strip_path "$PATH" "/bin"`
+      # Prepend current version
+      PATH=`nvm_prepend_path "$PATH" "$NVM_DIR/$VERSION/bin"`
       if [ -z "$MANPATH" ]; then
         MANPATH=$(manpath)
       fi
-      MANPATH=${MANPATH#*$NVM_DIR/*/man:}
-      if [ `expr "$MANPATH" : ".*$NVM_DIR/.*/share/man"` != 0 ]; then
-        MANPATH=${MANPATH%$NVM_DIR/*/share/man*}$NVM_DIR/$VERSION/share/man${MANPATH#*$NVM_DIR/*/share/man}
-      else
-        MANPATH="$NVM_DIR/$VERSION/share/man:$MANPATH"
-      fi
-      if [ `expr "$NODE_PATH" : ".*$NVM_DIR/.*/lib/node_modules.*"` != 0 ]; then
-        NODE_PATH=${NODE_PATH%$NVM_DIR/*/lib/node_modules*}$NVM_DIR/$VERSION/lib/node_modules${NODE_PATH#*$NVM_DIR/*/lib/node_modules}
-      else
-        NODE_PATH="$NVM_DIR/$VERSION/lib/node_modules:$NODE_PATH"
-      fi
+      # Strip other version from MANPATH
+      MANPATH=`nvm_strip_path "$MANPATH" "/share/man"`
+      # Prepend current version
+      MANPATH=`nvm_prepend_path "$MANPATH" "$NVM_DIR/$VERSION/share/man"`
+      # Strip other version from NODE_PATH
+      NODE_PATH=`nvm_strip_path "$NODE_PATH" "/lib/node_modules"`
+      # Prepend current version
+      NODE_PATH=`nvm_prepend_path "$NODE_PATH" "$NVM_DIR/$VERSION/lib/node_modules"`
       export PATH
       hash -r
       export MANPATH
@@ -484,7 +520,7 @@ nvm() {
         fi
         if [ $VERSION = "N/A" ]; then
           nvm help
-          return
+          return 127
         fi
       fi
 
@@ -506,11 +542,8 @@ nvm() {
         echo "$VERSION version is not installed yet"
         return;
       fi
-      if [ `expr "$NODE_PATH" : ".*$NVM_DIR/.*/lib/node_modules.*"` != 0 ]; then
-        RUN_NODE_PATH=${NODE_PATH%$NVM_DIR/*/lib/node_modules*}$NVM_DIR/$VERSION/lib/node_modules${NODE_PATH#*$NVM_DIR/*/lib/node_modules}
-      else
-        RUN_NODE_PATH="$NVM_DIR/$VERSION/lib/node_modules:$NODE_PATH"
-      fi
+      RUN_NODE_PATH=`nvm_strip_path "$NODE_PATH" "/lib/node_modules"`
+      RUN_NODE_PATH=`nvm_prepend_path "$NODE_PATH" "$NVM_DIR/$VERSION/lib/node_modules"`
       echo "Running node $VERSION"
       NODE_PATH=$RUN_NODE_PATH $NVM_DIR/$VERSION/bin/node "$@"
     ;;
@@ -564,7 +597,7 @@ nvm() {
     ;;
     "unalias" )
       mkdir -p $NVM_DIR/alias
-      [ $# -ne 2 ] && nvm help && return
+      [ $# -ne 2 ] && nvm help && return 127
       [ ! -f "$NVM_DIR/alias/$2" ] && echo "Alias $2 doesn't exist!" && return
       rm -f $NVM_DIR/alias/$2
       echo "Deleted alias $2"
@@ -572,7 +605,7 @@ nvm() {
     "copy-packages" )
         if [ $# -ne 2 ]; then
           nvm help
-          return
+          return 127
         fi
         VERSION=`nvm_version $2`
         local ROOT=`(nvm use $VERSION && npm -g root)`
@@ -592,7 +625,7 @@ nvm() {
         nvm_version $2
     ;;
     "--version" )
-        echo "nvm v0.5.0"
+        echo "0.7.0"
     ;;
     * )
       nvm help