From ba8123ac135f63b444196b6cdbf28ca0d1a7eeb9 Mon Sep 17 00:00:00 2001
From: Alex Karle <alex@alexkarle.com>
Date: Mon, 3 Jan 2022 18:01:52 -0500
Subject: [PATCH] atom: Add support for Linux atom.xml generation

Turns out `date` is rather different between BSD and GNU... RIP.
This is a half-hearted attempt (I mean Linux != GNU) to support Linux
(all my Linux systems use GNU coreutils).
---
 bin/genatom.sh | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/bin/genatom.sh b/bin/genatom.sh
index 76bd385..5d45bba 100755
--- a/bin/genatom.sh
+++ b/bin/genatom.sh
@@ -6,6 +6,14 @@ REPO=$(dirname "$(dirname "$0")")
 
 POSTS=$(grep '^- ../..' "$REPO/www/blog/index.txt" | sed 's#.*/blog/\([^)]*\).*#\1#')
 
+ARCH="$(uname)"
+parsedate() {
+    case "$ARCH" in
+        Linux) date +%F --date="$1" ;;
+        *) date -juf"%b %d, %Y" +%F "$1" ;;  # assume *BSD
+    esac
+}
+
 cat <<HEADER
 <?xml version="1.0" encoding="utf-8"?>
 <feed xmlns="http://www.w3.org/2005/Atom">
@@ -23,8 +31,7 @@ for post in $POSTS; do
     src="$REPO/www/blog/$p.txt"
     [ "$p" = "index" ] && continue
 
-    d=$(date -juf"%b %d, %Y" +%F \
-        "$(grep '^_Published' "$src" | sed 's/_Published: \([^_]*\)_/\1/')")
+    d=$(parsedate "$(grep '^_Published' "$src" | sed 's/_Published: \([^_]*\)_/\1/')")
     if [ -z "$printed_update" ]; then
         printed_update=1
         printf "  %s\n" "<updated>${d}T00:00:00Z</updated>"
--
libgit2 1.1.1