mirror of
https://github.com/fish-shell/fish-shell
synced 2024-11-15 01:17:45 +00:00
96 lines
2.1 KiB
Fish
96 lines
2.1 KiB
Fish
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function psub --description "Read from stdin into a file and output the filename. Remove the file when the command that called psub exits."
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set -l dirname
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set -l filename
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set -l funcname
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set -l suffix
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set -l use_fifo 1
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while count $argv >/dev/null
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switch $argv[1]
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case -h --help
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__fish_print_help psub
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return 0
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case -f --file
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set use_fifo 0
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set -e argv[1]
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case -s --suffix
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if not set -q argv[2]
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printf "psub: missing operand\n"
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return 1
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end
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set suffix $argv[2]
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set -e argv[1..2]
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case --
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set -e argv[1]
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break
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case "-?" "--*"
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printf "psub: invalid option: '%s'\n" $argv[1]
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return 1
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case "-*"
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# Ungroup short options: -hfs => -h -f -s
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set opts "-"(string sub -s 2 -- $argv[1] | string split "")
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set -e argv[1]
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set argv $opts $argv
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case "*"
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printf "psub: extra operand: '%s'\n" $argv[1]
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return 1
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end
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end
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if not status --is-command-substitution
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echo psub: Not inside of command substitution >&2
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return 1
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end
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set -l TMPDIR $TMPDIR
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if test -z "$TMPDIR[1]"
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set TMPDIR /tmp
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end
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if test use_fifo = 1
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# Write output to pipe. This needs to be done in the background so
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# that the command substitution exits without needing to wait for
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# all the commands to exit
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set dirname (mktemp -d "$TMPDIR[1]"/.psub.XXXXXXXXXX); or return
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set filename $dirname/psub.fifo"$suffix"
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mkfifo $filename
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cat >$filename &
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else if test -z $suffix
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set filename (mktemp "$TMPDIR[1]"/.psub.XXXXXXXXXX)
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cat >$filename
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else
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set dirname (mktemp -d "$TMPDIR[1]"/.psub.XXXXXXXXXX)
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set filename $dirname/psub"$suffix"
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cat >$filename
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end
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# Write filename to stdout
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echo $filename
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# Find unique function name
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while true
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set funcname __fish_psub_(random);
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if not functions $funcname >/dev/null ^/dev/null
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break;
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end
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end
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# Make sure we erase file when caller exits
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function $funcname --on-job-exit caller --inherit-variable filename --inherit-variable dirname --inherit-variable funcname
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command rm $filename
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if count $dirname >/dev/null
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command rmdir $dirname
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end
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functions -e $funcname
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end
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end
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