From: Steven Baltakatei Sandoval Date: Mon, 22 May 2023 23:55:23 +0000 (+0000) Subject: feat(unitproc):Bash function to insert string into another string X-Git-Tag: 0.8.2^2~9 X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/commitdiff_plain/6902250a188de0d54be60ac9f2d7075c37176b01?ds=inline;hp=-c feat(unitproc):Bash function to insert string into another string --- 6902250a188de0d54be60ac9f2d7075c37176b01 diff --git a/unitproc/bkt-insertStr b/unitproc/bkt-insertStr new file mode 100755 index 0000000..6cea251 --- /dev/null +++ b/unitproc/bkt-insertStr @@ -0,0 +1,62 @@ +#!/usr/bin/env bash +# Desc: Insert string into provided string + +yell() { echo "$0:${FUNCNAME[*]}: $*" >&2; } +die() { yell "$*"; exit 111; } +must() { "$@" || die "cannot $*"; } + +insertStr() { + # Desc: Inserts a + # Input: arg1: str str_rec String to receive insertion + # arg2: int pos Insertion position (0 = append to front) + # arg3: str str_ins String to be inserted + # Output: stdout: Combined string + # Version: 0.0.1 + # Depends: BK-2020-03: yell(), die(), must() + # Ref/Attrib: * BK-2020-03: https://gitlab.com/baltakatei/baltakatei-exdev/ + + local str_rec pos str_ins; + + # Check args + if [[ $# -ne 3 ]]; then + yell "ERROR:Invalid argument count:$#"; + return 1; fi; + re='^[0-9]+$'; + if [[ ! "$2" =~ $re ]]; then + yell "ERROR:Not an int:$2"; + return 1; fi; + str_rec="$1"; + pos="$2"; + str_ins="$3"; + + # Calculate string stats + len_str_rec="${#str_rec}"; + len_str_ins="${#str_ins}"; + + # Form prefix + pfx_pos_start="0"; + pfx_len="$pos"; + pfx="${str_rec:$pfx_pos_start:$pfx_len}"; + + # Form suffix + sfx_pos_start="$(( pos ))"; + sfx_len="$(( len_str_rec - pos ))"; + sfx="${str_rec:$sfx_pos_start:$sfx_len}"; + + # Print output to stdout + printf "%s%s%s\n" "$pfx" "$str_ins" "$sfx"; +}; # Insert string provided at indicated position via stdout + + +# Tests +printf "\"%s\" should read \"foobarbaz\"\n" "$(insertStr "foobaz" 3 "bar";)"; + +insertStr "foobaz" 0 "bar"; +insertStr "foobaz" 1 "bar"; +insertStr "foobaz" 2 "bar"; +insertStr "foobaz" 3 "bar"; +insertStr "foobaz" 4 "bar"; +insertStr "foobaz" 5 "bar"; +insertStr "foobaz" 6 "bar"; +insertStr "foobaz" 7 "bar"; +insertStr "foobaz" 999 "bar";