Code cleanup

1 files changed, 12 insertions, 8 deletions

diff --git a/lib/ref2bib.awk b/lib/ref2bib.awk
index 422fdd7..9384677 100644
--- a/lib/ref2bib.awk
+++ b/lib/ref2bib.awk
@@ -19,6 +19,14 @@ function r_emit(name, v) {
     printf "  %s = {%s},\n", name, v
 }
 
+# join arr[1..n] with " and ", as bibtex name lists expect
+function r_join(arr, n,    s, i) {
+  s = arr[1]
+  for (i = 2; i <= n; i++)
+    s = s " and " arr[i]
+  return s
+}
+
 {
   split("", val)
   na = 0
@@ -65,14 +73,10 @@ function r_emit(name, v) {
     print ""
   printf "@%s{FIXME,\n", type
 
-  authors = ""
-  for (i = 1; i <= na; i++)
-    authors = (i == 1) ? A[i] : authors " and " A[i]
-  r_emit("author", authors)
-  editors = ""
-  for (i = 1; i <= ne; i++)
-    editors = (i == 1) ? E[i] : editors " and " E[i]
-  r_emit("editor", editors)
+  if (na > 0)
+    r_emit("author", r_join(A, na))
+  if (ne > 0)
+    r_emit("editor", r_join(E, ne))
 
   r_emit("title", val["T"])
   r_emit("journal", val["J"])