From 4ffc433123c6464af635cc543c0d9b1f2abd85ae Mon Sep 17 00:00:00 2001
From: =?utf8?q?Paul=20H=C3=A4nsch?= <paul@plutz.net>
Date: Sat, 31 Aug 2024 14:31:43 +0200
Subject: [PATCH] portable macros.awk

---
 macros.awk | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/macros.awk b/macros.awk
index b72110b..db4561f 100755
--- a/macros.awk
+++ b/macros.awk
@@ -1,7 +1,6 @@
 #!/bin/awk -f
-#!/opt/busybox/awk -f
 
-# Copyright 2022 - 2023 Paul Hänsch
+# Copyright 2022 - 2024 Paul Hänsch
 # 
 # Permission to use, copy, modify, and/or distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -15,8 +14,11 @@
 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 # IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
+function debug(text) { printf "\n---\n%s\n---\n", text > "/dev/stderr"; }
+
 function sh_escape(arg){
-  return "'" gensub(/'/, "'\"'\"'", "g", arg) "'";
+  gsub(/'/, "'\"'\"'", arg);
+  return "'" arg "'";
 }
 
 function argsplit(line, args, LOCAL, c, n, ctx) {
@@ -65,15 +67,15 @@ function HTML ( text ) {
   return text;
 }
 
-function macro(call, LOCAL, line, args) {
+function macro(call, LOCAL, line, args, cmd) {
   argsplit(call, args);
   call="";
 
   for (n = 1; n in args; n++) call = call sh_escape(args[n]) " ";
 
   if (args[1] in MACROS) {
-    printf "%s", file | sh_escape(ENVIRON["MD_MACROS"]) "/" call;
-    close(sh_escape(ENVIRON["MD_MACROS"]) "/" call);
+    cmd = sh_escape(ENVIRON["MD_MACROS"]) "/" call;
+    printf "%s", file | cmd; close( cmd );
   } else {
     printf "%s", HTML("<<" call ">>");
   }
@@ -104,8 +106,10 @@ function findmacro(line, LOCAL, st, len, pre, post) {
 
 BEGIN {
   if (ENVIRON["MD_MACROS"]) {
-    AllowMacros = "true";
-    "cd " sh_escape(ENVIRON["MD_MACROS"]) "; printf '%s/' *" |getline macro_list;
+    cmd =  "cd " sh_escape(ENVIRON["MD_MACROS"]) "; printf '%s/' *";
+    "" cmd |getline macro_list;
+    # ^- need empty string "" concatenation to work in gowk
+    # need prebuilt cmd-variable to work properly in mawk
     split(macro_list, MACROS, "/");
     for (n in MACROS) { MACROS[MACROS[n]] = ""; delete MACROS[n]; }
     delete MACROS[""];
-- 
2.39.2