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authorBenedikt Peetz <benedikt.peetz@b-peetz.de>2024-06-11 08:00:45 +0200
committerBenedikt Peetz <benedikt.peetz@b-peetz.de>2024-06-11 08:00:45 +0200
commite4a334234b91f230571b5111a2b698230b27c660 (patch)
tree7545deca502c7ef7f676fc689f8caaeee6e19801 /templates/c/shell_line_editor.sh
parentchore(templates/rust): Quickly Update [THIS WILL BE REBASED] (diff)
downloadflake-templates-e4a334234b91f230571b5111a2b698230b27c660.zip
refactor(common): Use symlinks to state, which files should be replaced
Every symlink in the `./templates` directory is now replaced with the file it points to, making it obvious that this file should not be edited.
Diffstat (limited to '')
l---------[-rw-r--r--]templates/c/shell_line_editor.sh248
1 files changed, 1 insertions, 247 deletions
diff --git a/templates/c/shell_line_editor.sh b/templates/c/shell_line_editor.sh
index 8d6833a..0d2f727 100644..120000
--- a/templates/c/shell_line_editor.sh
+++ b/templates/c/shell_line_editor.sh
@@ -1,247 +1 @@
-#! /usr/bin/env sh
-# Taken in verbatim from: https://unix.stackexchange.com/a/113450, and somewhat changed
-
-LE_print_debug() {
- LE_debug="$1"
- LE_debug_msg="$2"
- [ -n "$LE_debug" ] && printf "\nDBG: (%s)\n" "$LE_debug_msg" >outfile.debug
-}
-
-LE() {
- # Shell Line Editor. Extremely slow and stupid code. However it
- # should work on ansi/vt100/linux derived terminals on POSIX
- # systems.
- # Understands some emacs key bindings: CTRL-(A,B,D,E,F,H,K,L)
- # plus the CTRL-W and CTRL-U normal killword and kill.
- # no Meta-X key, but handling of <Left>, <Right>, <Home>, <End>
- # <Suppr>.
- #
- # Args:
- # [1]: prompt (\x sequences recognized, defaults to "")
- # [2]: max input length (unlimited if < 0, (default))
- # [3]: fill character when erasing (defaults to space)
- # [4]: initial value.
- # [5]: whether to output debugfiles (outfile.debug and outfile.raw.debug)
- # Returns:
- # 0: OK
- # 1: od(d) error or CTRL-C hit
-
- LE_prompt="$1"
- LE_max=${2--1}
- LE_fill=${3-" "}
- LE_debug="$5"
-
- LE_backward() {
- LE_substract="$1"
- while [ -n "$LE_substract" ]; do
- printf '\b%s' "$2"
- LE_substract=${LE_substract%?}
- done
- }
-
- LE_fill() {
- LE_substract="$1"
- while [ -n "$LE_substract" ]; do
- printf '%s' "$LE_fill"
- LE_substract=${LE_substract%?}
- done
- }
-
- # Used but not right now
- # shellcheck disable=2016
- LE_restore='stty "$LE_tty"
- LC_COLLATE='${LC_COLLATE-"; unset LC_COLLATE"}
-
- # LE_tty is used in the restore above
- # shellcheck disable=2034
- LE_ret=1 LE_tty=$(stty -g) LC_COLLATE=C
-
- # text on the right of the cursor
- LE_left=$4
- # text on the left of the cursor
- LE_right=''
-
- # Tell the terminal to show us every char inputted
- stty -icanon -echo -isig min 3 time 1 -istrip
- printf '%b%s' "$LE_prompt" "$LE_left"
-
- # clear the output
- [ -n "$LE_debug" ] && printf "" >outfile.debug
- [ -n "$LE_debug" ] && printf "" >outfile.raw.debug
-
- # The value needs to be split for it to work (and it's either way just numbers)
- # shellcheck disable=2046
- while set -- $(dd bs=3 count=1 2>/dev/null | od -vAn -to1); do
- while [ "$#" -gt 0 ]; do
- [ -n "$LE_debug" ] && printf "%b" "\0$1" >>outfile.debug
- [ -n "$LE_debug" ] && printf "%s " "$1" >>outfile.raw.debug
- LE_current_key=$1
- shift
-
- # 033 is ^[ (`printf "\\$1\n" | cat -v`)
- if [ "$LE_current_key" = 033 ]; then
- case "$1$2$3" in
- # [ C | O C -> ^F forward
- 133103* | 117103*)
- shift 2
- LE_current_key=006
- ;;
- # [ D | O D -> ^B backward
- 133104* | 117104*)
- shift 2
- LE_current_key=002
- ;;
- # [ H | O H -> ^A beginning of line
- 133110* | 117110*)
- shift 2
- LE_current_key=001
- ;;
- # [ P | O P -> ^D del char
- 133120* | 117120*)
- shift 2
- LE_current_key=004
- ;;
- # [ F | O F -> ^E end of line
- 133106* | 117106*)
- shift 2
- LE_current_key=005
- ;;
- # [ 1 ~ -> ^A beginning of line
- 133061176)
- shift 3
- LE_current_key=001
- ;;
- # [ 4 ~ -> ^E end of line
- 133064176)
- shift 3
- LE_current_key=005
- ;;
- # [ 3 ~ -> ^D del char
- 133063176)
- shift 3
- LE_current_key=004
- ;;
- # [ | O
- 133* | 117*)
- shift
- # Is $1 in ge 0 AND le 9 OR eq ';'?
- # These are control sequences for things like colors; Ignore them
- while [ "0$1" -ge 060 ] && [ "0$1" -le 071 ] ||
- [ "0$1" -eq 073 ]; do
- shift
- done
- ;;
- esac
- fi
-
- case "$LE_current_key" in
- 001) # ^A beginning of line
- LE_backward "$LE_left"
- LE_right="$LE_left$LE_right"
- LE_left=
- ;;
- 002) # ^B backward
- if [ "$LE_left" = "" ]; then
- # bell
- printf '\a'
- LE_print_debug "$LE_debug" "backward with empty left"
- else
- printf '\b'
- LE_tmp="${LE_left%?}"
- LE_right="${LE_left#"$LE_tmp"}$LE_right"
- LE_left="$LE_tmp"
- fi ;;
- 003) # CTRL-C
- break 2 ;;
- 004) # ^D del char
- if [ "$LE_right" = "" ]; then
- # bell (tell the user that the line is empty)
- printf '\a'
- LE_print_debug "$LE_debug" "delete with empty right"
- else
- LE_right="${LE_right#?}"
- printf '%s\b' "$LE_right$LE_fill"
- LE_backward "$LE_right"
- fi ;;
- 012 | 015) # NL or CR
- LE_ret=0
- break 2
- ;;
- 005) # ^E end of line
- printf '%s' "$LE_right"
- LE_left="$LE_left$LE_right"
- LE_right=
- ;;
- 006) # ^F forward
- if [ "$LE_right" = "" ]; then
- # bell (tell the user that the line is empty)
- printf '\a'
- LE_print_debug "$LE_debug" "forward with empty right"
- else
- LE_tmp="${LE_right#?}"
- LE_left="$LE_left${LE_right%"$LE_tmp"}"
- printf %s "${LE_right%"$LE_tmp"}"
- LE_right="$LE_tmp"
- fi ;;
- 010 | 177) # backspace or del
- if [ "$LE_left" = "" ]; then
- # bell
- printf '\a'
- LE_print_debug "$LE_debug" "backspace with empty left"
- else
- printf '\b%s\b' "$LE_right$LE_fill"
- LE_backward "$LE_right"
- LE_left="${LE_left%?}"
- fi ;;
- 013) # ^K kill to end of line
- LE_fill "$LE_right"
- LE_backward "$LE_right"
- LE_right=""
- ;;
- 014) # ^L redraw
- printf '\r%b%s' "$LE_prompt" "$LE_left$LE_right"
- LE_backward "$LE_right"
- ;;
- 025) # ^U kill line
- LE_backward "$LE_left"
- LE_fill "$LE_left$LE_right"
- LE_backward "$LE_left$LE_right"
- LE_left=""
- LE_right=""
- ;;
- 027) # ^W kill word
- if [ "$LE_left" = "" ]; then
- # bell
- printf '\a'
- else
- LE_tmp="${LE_left% *}"
- LE_backward "${LE_left#"$LE_tmp"}"
- LE_fill "${LE_left#"$LE_tmp"}"
- LE_backward "${LE_left#"$LE_tmp"}"
- LE_left="$LE_tmp"
- fi ;;
- # Print the received key, as it did not match a special key
- [02][4-7]? | [13]??) # 040 -> 177, 240 -> 377
- # was assuming iso8859-x at the time
- if [ "$LE_max" -gt 0 ] && LE_tmp="$LE_left$LE_right" &&
- [ "${#LE_tmp}" -eq "$LE_max" ]; then
- # bell, when the user is trying to cross the line limit
- printf '\a'
- LE_print_debug "$LE_debug" "max output reached"
- else
- LE_left="$LE_left$(printf '%b' "\0$LE_current_key")"
- printf '%b%s' "\0$LE_current_key" "$LE_right"
- LE_backward "$LE_right"
- fi ;;
- *)
- LE_print_debug "$LE_debug" "key not recognized: $(printf "%b" "\0$LE_current_key")"
- printf '\a'
- ;;
- esac
- done
- done
- eval "$LE_restore"
- REPLY=$LE_left$LE_right
- echo
- return "$LE_ret"
-}
+../../common/files/shell_line_editor.sh \ No newline at end of file