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npm completions: Check command npm existence

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Really fixes #3158 and #3152.

(cherry picked from commit 10661bb024)
This commit is contained in:
Fabian Homborg 2016-06-21 17:42:22 +02:00
parent 00291c1c5a
commit 8070cd81d6
1 changed files with 51 additions and 37 deletions
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88
share/completions/npm.fish
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@ -5,51 +5,62 @@
# https://github.com/fish-shell/fish-shell/tree/master/share/completions
function __fish_npm_needs_command
set cmd (commandline -opc)
set cmd (commandline -opc)
if [ (count $cmd) -eq 1 ]
return 0
end
if [ (count $cmd) -eq 1 ]
return 0
end
return 1
return 1
end
function __fish_npm_using_command
set cmd (commandline -opc)
set cmd (commandline -opc)
if [ (count $cmd) -gt 1 ]
if [ $argv[1] = $cmd[2] ]
return 0
if [ (count $cmd) -gt 1 ]
if [ $argv[1] = $cmd[2] ]
return 0
end
end
end
return 1
return 1
end
function __fish_npm_needs_option
switch (commandline -ct)
case "-*"
return 0
end
return 1
switch (commandline -ct)
case "-*"
return 0
end
return 1
end
function __fish_complete_npm --description "Complete the commandline using npm's 'completion' tool"
# npm completion is bash-centric, so we need to translate fish's "commandline" stuff to bash's $COMP_* stuff
# COMP_LINE is an array with the words in the commandline
set -lx COMP_LINE (commandline -o)
# COMP_CWORD is the index of the current word in COMP_LINE
# bash starts arrays with 0, so subtract 1
set -lx COMP_CWORD (math (count $COMP_LINE) - 1)
# COMP_POINT is the index of point/cursor when the commandline is viewed as a string
set -lx COMP_POINT (commandline -C)
# If the cursor is after the last word, the empty token will disappear in the expansion
# Readd it
if test (commandline -ct) = ""
set COMP_CWORD (math $COMP_CWORD + 1)
set COMP_LINE $COMP_LINE ""
end
command npm completion -- $COMP_LINE ^/dev/null
# Note that this function will generate undescribed completion options, and current fish
# will sometimes pick these over versions with descriptions.
# However, this seems worth it because it means automatically getting _some_ completions if npm updates.
# Defining an npm alias that automatically calls nvm if necessary is a popular convenience measure.
# Because that is a function, these local variables won't be inherited and the completion would fail
# with weird output on stdout (!). But before the function is called, no npm command is defined,
# so calling the command would fail.
# So we'll only try if we have an npm command.
if command -s npm >/dev/null
# npm completion is bash-centric, so we need to translate fish's "commandline" stuff to bash's $COMP_* stuff
# COMP_LINE is an array with the words in the commandline
set -lx COMP_LINE (commandline -o)
# COMP_CWORD is the index of the current word in COMP_LINE
# bash starts arrays with 0, so subtract 1
set -lx COMP_CWORD (math (count $COMP_LINE) - 1)
# COMP_POINT is the index of point/cursor when the commandline is viewed as a string
set -lx COMP_POINT (commandline -C)
# If the cursor is after the last word, the empty token will disappear in the expansion
# Readd it
if test (commandline -ct) = ""
set COMP_CWORD (math $COMP_CWORD + 1)
set COMP_LINE $COMP_LINE ""
end
command npm completion -- $COMP_LINE ^/dev/null
end
end
# use npm completion for most of the things,
@ -60,12 +71,15 @@ complete -f -c npm -n 'not __fish_npm_needs_option' -a "(__fish_complete_npm)"
# list available npm scripts and their parial content
function __fish_npm_run
command npm run | string match -r -v '^[^ ]|^$' | string trim | while read -l name
set -l trim 20
read -l value
echo "$value" | cut -c1-$trim | read -l value
printf "%s\t%s\n" $name $value
end
# Like above, only try to call npm if there's a command by that name to facilitate aliases that call nvm.
if command -s npm >/dev/null
command npm run | string match -r -v '^[^ ]|^$' | string trim | while read -l name
set -l trim 20
read -l value
echo "$value" | cut -c1-$trim | read -l value
printf "%s\t%s\n" $name $value
end
end
end
# run