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https://github.com/fish-shell/fish-shell.git
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231 lines
8.2 KiB
Fish
231 lines
8.2 KiB
Fish
#
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# Wrap the builtin history command to provide additional functionality.
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#
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# This function is meant to mimic the `set_hist_cmd` function in *src/builtin.cpp*.
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# In particular the error message should be identical in both locations.
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function __fish_set_hist_cmd --no-scope-shadowing
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if set -q hist_cmd[1]
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set -l msg (printf (_ "you cannot do both '%ls' and '%ls' in the same invocation") \
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$hist_cmd $argv[1])
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printf (_ "%ls: Invalid combination of options,\n%ls\n") $cmd $msg >&2
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return 1
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end
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set hist_cmd $argv[1]
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return 0
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end
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function __fish_unexpected_hist_args --no-scope-shadowing
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if test -n "$search_mode"
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or test -n "$show_time"
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printf (_ "%ls: you cannot use any options with the %ls command\n") $cmd $hist_cmd >&2
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return 0
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end
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if set -q argv[1]
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printf (_ "%ls: %ls expected %d args, got %d\n") $cmd $hist_cmd 0 (count $argv) >&2
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return 0
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end
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return 1
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end
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function history --description "display or manipulate interactive command history"
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set -l cmd $_
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set -l cmd history
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set -l hist_cmd
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set -l search_mode
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set -l show_time
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set -l max_count
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set -l case_sensitive
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set -l null
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# Check for a recognized subcommand as the first argument.
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if set -q argv[1]
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and not string match -q -- '-*' $argv[1]
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switch $argv[1]
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case search delete merge save clear
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set hist_cmd $argv[1]
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set -e argv[1]
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end
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end
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# The "set cmd $cmd xyz" lines are to make it easy to detect if the user specifies more than one
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# subcommand.
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#
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# TODO: Remove the long options that correspond to subcommands (e.g., '--delete') on or after
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# 2017-10 (which will be a full year after these flags have been deprecated).
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while set -q argv[1]
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switch $argv[1]
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case --delete
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__fish_set_hist_cmd delete
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or return
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case --save
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__fish_set_hist_cmd save
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or return
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case --clear
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__fish_set_hist_cmd clear
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or return
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case --search
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__fish_set_hist_cmd search
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or return
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case --merge
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__fish_set_hist_cmd merge
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or return
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case -C --case_sensitive
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set case_sensitive --case-sensitive
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case -h --help
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builtin history --help
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return
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case -t --show-time '--show-time=*' --with-time '--with-time=*'
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set show_time $argv[1]
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case -p --prefix
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set search_mode --prefix
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case -c --contains
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set search_mode --contains
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case -e --exact
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set search_mode --exact
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case -z --null
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set null --null
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case -n --max
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if string match -- '-n?*' $argv[1]
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or string match -- '--max=*' $argv[1]
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set max_count $argv[1]
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else
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set max_count $argv[1] $argv[2]
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set -e argv[1]
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end
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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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if string match -r -- '-\d+' $argv[1]
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set max_count $argv[1]
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set -e argv[1]
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else
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break
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end
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end
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set -e argv[1]
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end
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# If a history command has not already been specified check the first non-flag argument for a
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# command. This allows the flags to appear before or after the subcommand.
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if not set -q hist_cmd[1]
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and set -q argv[1]
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switch $argv[1]
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case search delete merge save clear
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set hist_cmd $argv[1]
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set -e argv[1]
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end
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end
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if not set -q hist_cmd[1]
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set hist_cmd search # default to "search" if the user didn't specify a subcommand
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end
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switch $hist_cmd
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case search # search the interactive command history
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test -z "$search_mode"
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and set search_mode "--contains"
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if isatty stdout
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set -l pager less
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set -q PAGER
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and set pager $PAGER
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builtin history search $search_mode $show_time $max_count $case_sensitive $null -- $argv | eval $pager
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else
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builtin history search $search_mode $show_time $max_count $case_sensitive $null -- $argv
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end
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case delete # interactively delete history
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# TODO: Fix this to deal with history entries that have multiple lines.
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if not set -q argv[1]
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printf (_ "You must specify at least one search term when deleting entries\n") >&2
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return 1
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end
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test -z "$search_mode"
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and set search_mode "--contains"
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if test $search_mode = "--exact"
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builtin history delete $search_mode $case_sensitive $argv
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return
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end
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# TODO: Fix this so that requesting history entries with a timestamp works:
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# set -l found_items (builtin history search $search_mode $show_time -- $argv)
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set -l found_items
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builtin history search $search_mode $case_sensitive --null -- $argv | while read -lz x
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set found_items $found_items $x
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end
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if set -q found_items[1]
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set -l found_items_count (count $found_items)
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for i in (seq $found_items_count)
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printf "[%s] %s\n" $i $found_items[$i]
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end
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echo ""
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echo "Enter nothing to cancel the delete, or"
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echo "Enter one or more of the entry IDs separated by a space, or"
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echo "Enter \"all\" to delete all the matching entries."
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echo ""
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read --local --prompt "echo 'Delete which entries? > '" choice
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echo ''
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if test -z "$choice"
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printf "Cancelling the delete!\n"
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return
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end
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if test "$choice" = "all"
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printf "Deleting all matching entries!\n"
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for item in $found_items
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builtin history delete --exact --case-sensitive -- $item
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end
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builtin history save
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return
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end
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for i in (string split " " -- $choice)
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if test -z "$i"
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or not string match -qr '^[1-9][0-9]*$' -- $i
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or test $i -gt $found_items_count
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printf "Ignoring invalid history entry ID \"%s\"\n" $i
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continue
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end
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printf "Deleting history entry %s: \"%s\"\n" $i $found_items[$i]
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builtin history delete --exact --case-sensitive -- "$found_items[$i]"
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end
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builtin history save
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end
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case save # save our interactive command history to the persistent history
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__fish_unexpected_hist_args $argv
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and return 1
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builtin history save -- $argv
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case merge # merge the persistent interactive command history with our history
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__fish_unexpected_hist_args $argv
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and return 1
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builtin history merge -- $argv
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case clear # clear the interactive command history
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__fish_unexpected_hist_args $argv
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and return 1
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printf (_ "If you enter 'yes' your entire interactive command history will be erased\n")
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read --local --prompt "echo 'Are you sure you want to clear history? (yes/no) '" choice
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if test "$choice" = "yes"
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builtin history clear -- $argv
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and printf (_ "Command history cleared!")
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else
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printf (_ "You did not say 'yes' so I will not clear your command history\n")
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end
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case '*'
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printf "%ls: unexpected subcommand '%ls'\n" $cmd $hist_cmd
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return 2
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end
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end
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