feat: introduce horizontal line drawers and terminal width calculator

1 files changed, 38 insertions, 0 deletions

diff --git a/.bash/aliases.bash b/.bash/aliases.bash
index 8f29423..a09ba54 100644
--- a/.bash/aliases.bash
+++ b/.bash/aliases.bash
@@ -109,6 +109,44 @@ xstat() {
 		printf "%s\t%s\n" "${crtime}" "${target}"
 	done
 }
+# ----- DECORATIVE STUFF ----- #
+function coleval {
+	mycols="$COLUMNS"
+	if [ -z "$COLUMNS" ]; then mycols="$(tput cols 2>/dev/null)"; fi
+	if [ -z "$COLUMNS" ]; then mycols=20; fi
+	printf '%b' "$mycols"
+}
+function hsep {
+	mycols="$(coleval)"
+	nocalc=0
+	declare mychar
+	while [ "$#" -gt 0 ]; do
+		case "$1" in
+			'-i') nocalc=1; shift ;;
+			*) mychar="$1"; shift ;;
+		esac
+	done
+	[ -z "$mychar" ] && return 1
+	[ "$(printf '%b' "$mychar" | wc --chars)" -ne 1 ] && return 2
+	if [ "$nocalc" -ne 1 ]; then
+		# if we encounter a one-char three-byte character, we may have hit a Unicode
+		# symbol that indeed is a little wider. Use bashes mathematical division- it rounds
+		# down, but this is what we want as we cannot split a character into parts :-)
+		# The result might be significantly narrower than the terminal's width, but for
+		# now we don't have any better math.
+		[ "$(printf '%b' "$mychar" | wc --bytes)" -eq 3 ] && mycols="$(( 4 * mycols / 9 ))"
+	fi
+	for (( i=0;i<mycols;++i )); do
+		printf '%b' "$mychar"
+	done
+	printf '\n'
+}
+alias hdash='hsep "-"'
+alias hddash='hsep "="'
+#alias hline='hsep -i "─"'
+alias hline='hsep -i "─"'
+alias hdline='hsep -i "═"'
+alias hfline='hsep -i "━"'
 # ----- PACKAGE MANAGERS ----- #
 if [ -x "/usr/bin/paru" ];then
 	alias pkgclean="paru --noconfirm -Sc"