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_cargo: Add cargo package completion #7064

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99f94e0
_cargo: Move _cargo_cmds to near end of file
tesuji Jun 22, 2019
36785ea
_cargo: Collapse if else
tesuji Jun 22, 2019
6d70bf4
_cargo: Add package completion
tesuji Jun 23, 2019
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89 changes: 60 additions & 29 deletions src/etc/_cargo
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Original file line number Diff line number Diff line change
Expand Up @@ -420,28 +420,43 @@ _cargo() {
esac
}

_cargo_cmds() {
local -a commands
# This uses Parameter Expansion Flags, which is an Zsh built-in features.
# See more: http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
# and http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion
#
# # How this work?
#
# First it splits the result of `cargo --list` at newline, then it removes the first line.
# Then it removes indentation (4 whitespaces) before each items. (Note the x## pattern [1]).
# Then it replaces those spaces between item and description with a `:`
#
# [1]: https://github.com/zsh-users/zsh-completions/blob/master/zsh-completions-howto.org#patterns
commands=( ${${${(M)"${(f)$(cargo --list)}":# *}/ ##/}/ ##/:} )
_describe 'command' commands
}


#FIXME: Disabled until fixed
#gets package names from the manifest file
_get_package_names() {
:
local manifest=$(_locate_manifest)
if [[ -z $manifest ]]; then
return 0
fi

local last_line=''
local -a names
local in_block=false
names=()
while read -r line; do
if [[ $line =~ '^\s*\[.*' ]]; then
in_block=false
if [[ $line =~ '.*dependencies\..+\]$' ]]; then
regexp-replace line '^\[.*dependencies\.|\]$' ''
names+=( "$line" )
fi
fi

if [[ $last_line =~ '^\s*\[.*dependencies]$' ]]; then
in_block=true
fi

if [[ $in_block == true ]]; then
line=${line## }
if [[ -n $line ]]; then
if [[ ! $line =~ '\s*#.*' ]]; then
regexp-replace line '\s*=\s*.*["}]$' ''
names+=( "$line" )
fi
fi
fi

last_line=$line
done < "$manifest"
_describe 'packages' names
}

#TODO:see if it makes sense to have 'locate-project' to have non-json output.
Expand All @@ -468,17 +483,13 @@ _get_names_from_array() {
while read -r line; do
if [[ $last_line == "[[$block_name]]" ]]; then
in_block=true
else
if [[ $last_line =~ '\s*\[\[.*' ]]; then
in_block=false
fi
elif [[ $last_line =~ '\s*\[\[.*' ]]; then
in_block=false
fi

if [[ $in_block == true ]]; then
if [[ $line =~ '\s*name\s*=' ]]; then
regexp-replace line '^\s*name\s*=\s*|"' ''
names+=( "$line" )
fi
if [[ $in_block == true ]] && [[ $line =~ '\s*name\s*=' ]]; then
regexp-replace line '^\s*name\s*=\s*|"' ''
names+=( "$line" )
fi

last_line=$line
Expand All @@ -497,6 +508,26 @@ _benchmark_names() {
_get_names_from_array "bench"
}

_cargo_cmds() {
local -a commands
# This uses Parameter Expansion Flags, which is an Zsh built-in features.
# See more: http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion-Flags
# and http://zsh.sourceforge.net/Doc/Release/Expansion.html#Parameter-Expansion
#
# # How this work?
#
# First it splits the result of `cargo --list` at newline, then it removes the first line.
# Then it removes indentation (4 whitespaces) before each items. (Note the x## pattern [1]).
# Then it replaces those spaces between item and description with a `:`.
# You could use handful command:
# print -ln <pattern>
# to test the pattern.
#
# [1]: https://github.com/zsh-users/zsh-completions/blob/master/zsh-completions-howto.org#patterns
commands=( ${${${(M)"${(f)$(cargo --list)}":# *}/ ##/}/ ##/:} )
_describe 'command' commands
}

# These flags are mutually exclusive specifiers for the scope of a command; as
# they are used in multiple places without change, they are expanded into the
# appropriate command's `_arguments` where appropriate.
Expand Down