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Diffstat (limited to 'Functions/Misc/zslurp')
-rw-r--r-- | Functions/Misc/zslurp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/Functions/Misc/zslurp b/Functions/Misc/zslurp new file mode 100644 index 000000000..84df0c948 --- /dev/null +++ b/Functions/Misc/zslurp @@ -0,0 +1,31 @@ +#!/bin/zsh -f + +# Read stdin verbatim and as efficiently as possible into $REPLY, +# stopping without any change to $REPLY in the event of any error. +# Benchmarked by Roman Perepelitsa in zsh-users/29472 + +# Although this function faithfully records the input stream, later +# references to $REPLY with the multibyte option back in effect will +# (re-)interpret the content as multibyte characters. This may not be +# what is desired. + +emulate -L zsh -o no_multibyte + +### Alternate formulation, faster on bigger files +# # /dev/fd/0 is treated specially by -f so also check /dev/fd +# if [[ -d /dev/fd && -f /dev/fd/0 ]] && zmodload zsh/mapfile +# then +# local +h -Ar mapfile +# typeset -g REPLY="${mapfile[/dev/fd/0]}" && return +# fi +# # else fall through to read from pipe/socket + +zmodload zsh/system || return +local -a content +local -i i=0 +while true; do + sysread 'content[++i]' && continue + (( $? == 5 )) || return + break +done +typeset -g REPLY=${(j::)content} |