X-Git-Url: https://git.plutz.net/?a=blobdiff_plain;f=md_macros.awk;h=5ffc233b9eddc3f386727649db1a87b4b4912af3;hb=359ef8d6a4d58d52ae3347d6390e4d4d535fb2d4;hp=a1e6450f48a8136dc53ad17a9cbe5c1443ea6089;hpb=034bc176a19e32f920b422604762f5ab6fd21bc7;p=shellwiki

diff --git a/md_macros.awk b/md_macros.awk
index a1e6450..5ffc233 100755
--- a/md_macros.awk
+++ b/md_macros.awk
@@ -1,18 +1,71 @@
 #!/bin/awk -f
 #!/opt/busybox/awk -f
 
-function macro(call, LOCAL, line, files, n, exec) {
-  "cd " ENVIRON["MD_MACROS"] "; printf '%s/' *" |getline line;
-  split(line, files, "/");
-  for (n in files) { files[files[n]] = ""; delete files[n]; }
-  delete files[""];
+# Copyright 2022 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
+# copyright notice and this permission notice appear in all copies.
+# 
+# THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+# IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-  split(call, exec);
+function sh_escape(arg){
+  return "'" gensub(/'/, "'\"'\"'", "g", arg) "'";
+}
+
+function argsplit(line, args, LOCAL, c, n, ctx) {
+  ctx="space"; n=0;
+
+  while ( length(line) > 0 ) {
+    c = substr(line, 1, 1);
+    line = substr(line, 2);
+    if (ctx == "space" )
+           if (c ~ /[ \t]/) ctx = "space";
+      else if (c ~ /\\/) { n++; ctx = "escbare"; }
+      else if (c ~ /"/)  { n++; ctx = "dquot"; }
+      else if (c ~ /'/)  { n++; ctx = "squot"; }
+      else   { n++; args[n] = c; ctx = "bare"; }
+    else if (ctx == "bare")
+           if (c ~ /[ \t]/) ctx = "space";
+      else if (c ~ /\\/)  ctx = "escbare";
+      else if (c ~ /"/)   ctx = "dquot";
+      else if (c ~ /'/)   ctx = "squot";
+      else args[n] = args[n] c;
+    else if (ctx == "dquot")
+           if (c ~ /"/)  ctx = "bare";
+      else if (c ~ /\\/) ctx = "escdquot";
+      else args[n] = args[n] c;
+    else if (ctx == "squot")
+      if (c ~ /'/)  ctx = "bare";
+      else args[n] = args[n] c;
+    else if (ctx == "escbare") {
+      args[n] = args[n] c;
+      ctx = "bare";
+    }
+    else if (ctx == "escdquot") {
+      args[n] = args[n] c;
+      ctx = "dquot";
+    }
+  }
+} 
 
-  if (exec[1] in files) {
+function macro(call, LOCAL, line, args) {
+  argsplit(call, args);
+  call="";
+
+  for (n = 1; n in args; n++) call = call sh_escape(args[n]) " ";
+
+  if (args[1] in MACROS) {
+    oldRS=RS; oldORS=ORS;
     RS=""; ORS=""; line="";
-    # TODO: proper shell-exec function with argument array
-    "printf '%s' " line " | " ENVIRON["MD_MACROS"] "/" call | getline line;
+    "printf '%s' " sh_escape(file) " | " sh_escape(ENVIRON["MD_MACROS"]) "/" call | getline line;
+    RS=oldRS; ORS=oldORS;
     return line;
   } else {
     return HTML("<<" call ">>");
@@ -20,5 +73,11 @@ function macro(call, LOCAL, line, files, n, exec) {
 }
 
 BEGIN {
-  if (ENVIRON["MD_MACROS"]) { AllowMacros = "true"; }
+  if (ENVIRON["MD_MACROS"]) {
+    AllowMacros = "true";
+    "cd " sh_escape(ENVIRON["MD_MACROS"]) "; printf '%s/' *" |getline macro_list;
+    split(macro_list, MACROS, "/");
+    for (n in MACROS) { MACROS[MACROS[n]] = ""; delete MACROS[n]; }
+    delete MACROS[""];
+  }
 }