From: "Sam James" <sam@gentoo.org>
To: gentoo-commits@lists.gentoo.org
Subject: [gentoo-commits] proj/gentoo-functions:master commit in: /
Date: Fri, 21 Jun 2024 13:14:14 +0000 (UTC) [thread overview]
Message-ID: <1718176002.1124356ee9f4d6065953d8aecf6e06c617e930c1.sam@gentoo> (raw)
commit: 1124356ee9f4d6065953d8aecf6e06c617e930c1
Author: Kerin Millar <kfm <AT> plushkava <DOT> net>
AuthorDate: Mon Jun 3 01:39:20 2024 +0000
Commit: Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Wed Jun 12 07:06:42 2024 +0000
URL: https://gitweb.gentoo.org/proj/gentoo-functions.git/commit/?id=1124356e
Add the hr() function to print a horizontal rule
As based on the implementation in Maarten Billemont's bashlib library.
Signed-off-by: Kerin Millar <kfm <AT> plushkava.net>
functions.sh | 28 ++++++++++++++++++++++++++++
test-functions | 24 ++++++++++++++++++++++++
2 files changed, 52 insertions(+)
diff --git a/functions.sh b/functions.sh
index 30c2447..c077290 100644
--- a/functions.sh
+++ b/functions.sh
@@ -363,6 +363,34 @@ has_systemd()
test -d /run/systemd
}
+#
+# Prints a horizontal rule. If specified, the first parameter shall be taken as
+# a string to be repeated in the course of composing the rule. Otherwise, it
+# shall default to the <hyphen-minus>. If specified, the second parameter shall
+# define the length of the rule in characters. Otherwise, it shall default to
+# the width of the terminal if such can be determined, or 80 if it cannot be.
+#
+hr()
+{
+ local length
+
+ if is_int "$2"; then
+ length=$2
+ elif _update_tty_level <&1; [ "${genfun_tty}" -eq 2 ]; then
+ length=${genfun_cols}
+ else
+ length=80
+ fi
+ PATTERN=${1:--} awk -v "width=${length}" -f - <<-'EOF'
+ BEGIN {
+ while (length(rule) < width) {
+ rule = rule substr(ENVIRON["PATTERN"], 1, width - length(rule))
+ }
+ print rule
+ }
+ EOF
+}
+
#
# Determines whether the first parameter is a valid identifier (variable name).
#
diff --git a/test-functions b/test-functions
index bbb74f1..d90462e 100755
--- a/test-functions
+++ b/test-functions
@@ -484,6 +484,29 @@ test_trim() {
iterate_tests 4 "$@"
}
+test_hr() {
+ # shellcheck disable=2183
+ set -- \
+ eq 0 "$(printf '%80s' | tr ' ' -)" N/A N/A \
+ eq 0 "$(printf '%80s' | tr ' ' -)" - N/A \
+ eq 0 '' - 0 \
+ eq 0 - - 1 \
+ eq 0 ----- - 5 \
+ eq 0 '' xyz 0 \
+ eq 0 x xyz 1 \
+ eq 0 xyzxy xyz 5
+
+ callback() {
+ shift
+ expected=$1
+ shift
+ test_description="hr $(_print_args "$@")"
+ test "$(hr "$@")" = "${expected}"
+ }
+
+ iterate_tests 5 "$@"
+}
+
iterate_tests() {
slice_width=$1
shift
@@ -547,6 +570,7 @@ test_edo || rc=1
test_srandom || rc=1
test_newest || rc=1
test_trim || rc=1
+test_hr || rc=1
cleanup_tmpdir
next reply other threads:[~2024-06-21 13:14 UTC|newest]
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