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107 lines
2.6 KiB
107 lines
2.6 KiB
#
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# Defines helper functions.
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#
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# Authors:
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# Sorin Ionescu <sorin.ionescu@gmail.com>
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#
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# Checks boolean variable for "true".
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# Case insensitive: "1", "y", "yes", "t", "true", "o", and "on".
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function is-true {
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[[ -n "$1" && "$1" == (1|[Yy]([Ee][Ss]|)|[Tt]([Rr][Uu][Ee]|)|[Oo]([Nn]|)) ]]
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}
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# Prints the first non-empty string in the arguments array.
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function coalesce {
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for arg in $argv; do
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print "$arg"
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return 0
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done
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return 1
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}
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# Checks if a file can be autoloaded by trying to load it in a subshell.
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function autoloadable {
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( unfunction $1 ; autoload -U +X $1 ) &> /dev/null
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}
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# Loads Oh My Zsh modules.
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function omodload {
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local omodule
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# Extended globbing is needed for autoloading of module functions.
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setopt EXTENDED_GLOB
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# Add functions and completions to fpath.
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fpath=(${argv:+${OMZ}/modules/${^argv}/{functions,completions}(/FN)} $fpath)
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# Load Oh My Zsh functions.
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for ofunction in $OMZ/modules/**/functions/^([_.]*|prompt_*_setup)(.N:t); do
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autoload -Uz "$ofunction"
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done
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unset ofunction
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# Extended globbing is no longer needed.
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unsetopt EXTENDED_GLOB
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for omodule in "$argv[@]"; do
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if zstyle -t ":omz:module:$omodule" loaded; then
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continue
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elif [[ ! -d "$OMZ/modules/$omodule" ]]; then
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print "$0: no such module: $omodule" >&2
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continue
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else
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if [[ -f "$OMZ/modules/$omodule/init.zsh" ]]; then
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source "$OMZ/modules/$omodule/init.zsh"
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fi
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if (( $? == 0 )); then
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zstyle ":omz:module:$omodule" loaded 'yes'
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else
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zstyle ":omz:module:$omodule" loaded 'no'
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fi
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fi
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done
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}
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# Trap signals were generated with 'kill -l'.
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# DEBUG, EXIT, and ZERR are Zsh signals.
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TRAP_SIGNALS=(
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ABRT ALRM BUS CHLD CONT EMT FPE HUP ILL INFO INT IO KILL PIPE PROF QUIT
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SEGV STOP SYS TERM TRAP TSTP TTIN TTOU URG USR1 USR2 VTALRM WINCH XCPU XFSZ
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DEBUG EXIT ZERR
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)
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# Adds a function to a list to be called when a trap is triggered.
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function add-zsh-trap {
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if (( $# < 2 )); then
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print "usage: $0 type function" >&2
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return 1
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fi
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if [[ -z "$TRAP_SIGNALS[(r)$1]" ]]; then
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print "$0: unknown signal: $1" >&2
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return 1
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fi
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local trap_functions="TRAP${1}_FUNCTIONS"
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if (( ! ${(P)+trap_functions} )); then
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typeset -gaU "$trap_functions"
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fi
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eval "$trap_functions+="$2""
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if (( ! $+functions[TRAP${1}] )); then
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eval "
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function TRAP${1} {
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for trap_function in \"\$TRAP${1}_FUNCTIONS[@]\"; do
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if (( \$+functions[\$trap_function] )); then
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\"\$trap_function\" \"\$1\"
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fi
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done
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return \$(( 128 + \$1 ))
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}
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"
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fi
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}
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