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helper method for testing existence of commands

master
Koen Punt 2013-12-12 10:46:40 +01:00
parent cf515c4ff8
commit e99fc43ab2
1 changed files with 10 additions and 5 deletions
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15
nvm.sh
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@ -7,9 +7,14 @@
# Implemented by Tim Caswell <tim@creationix.com> # Implemented by Tim Caswell <tim@creationix.com>
# with much bash help from Matthew Ranney # with much bash help from Matthew Ranney
has() {
type "$1" > /dev/null 2>&1
return $?
}
# Make zsh glob matching behave same as bash # Make zsh glob matching behave same as bash
# This fixes the "zsh: no matches found" errors # This fixes the "zsh: no matches found" errors
if type "unsetopt" > /dev/null 2>&1; then if has "unsetopt"; then
unsetopt nomatch 2>/dev/null unsetopt nomatch 2>/dev/null
NVM_CD_FLAGS="-q" NVM_CD_FLAGS="-q"
fi fi
@ -20,7 +25,7 @@ if [ ! -d "$NVM_DIR" ]; then
fi fi
nvm_set_nullglob() { nvm_set_nullglob() {
if type setopt > /dev/null 2>&1; then if has "setopt"; then
# Zsh # Zsh
setopt NULL_GLOB setopt NULL_GLOB
else else
@ -202,11 +207,11 @@ nvm() {
local shasum='shasum' local shasum='shasum'
local nobinary local nobinary
if [ ! `\which curl` ]; then if ! has "curl"; then
echo 'NVM Needs curl to proceed.' >&2; echo 'NVM Needs curl to proceed.' >&2;
fi fi
if [ ! `\which shasum` ]; then if ! has "shasum"; then
shasum='sha1sum' shasum='sha1sum'
fi fi
@ -306,7 +311,7 @@ nvm() {
) )
then then
nvm use $VERSION nvm use $VERSION
if ! which npm ; then if ! has "npm" ; then
echo "Installing npm..." echo "Installing npm..."
if [[ "`expr match $VERSION '\(^v0\.1\.\)'`" != '' ]]; then if [[ "`expr match $VERSION '\(^v0\.1\.\)'`" != '' ]]; then
echo "npm requires node v0.2.3 or higher" echo "npm requires node v0.2.3 or higher"