Replace mkproto.pl with mkproto.awk

This replaces the build dependency on perl with one on awk which is
already used throughout the build system and is much more ubiquitous
than perl.

1 files changed, 39 insertions, 0 deletions

diff --git a/mkproto.awk b/mkproto.awk
new file mode 100644
index 00000000..ab97d54f
--- /dev/null
+++ b/mkproto.awk
@@ -0,0 +1,39 @@
+#!/usr/bin/awk -f
+
+BEGIN {
+    while ((getline i < "proto.h") > 0) old_protos = old_protos ? old_protos "\n" i : i
+    protos = "/* This file is automatically generated with \"make proto\". DO NOT EDIT */\n"
+}
+
+inheader {
+    protos = protos "\n" ((inheader = /\)[ \t]*$/ ? 0 : 1) ? $0 : $0 ";")
+    next
+}
+
+/^FN_(LOCAL|GLOBAL)_[^(]+\([^,()]+/ {
+    local = /^FN_LOCAL/
+    gsub(/^FN_(LOC|GLOB)AL_|,.*$/, "")
+    sub(/^BOOL\(/, "BOOL ")
+    sub(/^CHAR\(/, "char ")
+    sub(/^INTEGER\(/, "int ")
+    sub(/^STRING\(/, "char *")
+    protos = protos "\n" $0 (local ? "(int module_id);" : "(void);")
+    next
+}
+
+/^static|^extern|;/||!/^[A-Za-z][A-Za-z0-9_]* / { next }
+
+/\(.*\)[ \t]*$/ {
+    protos = protos "\n" $0 ";"
+    next
+}
+
+/\(/ {
+    inheader = 1
+    protos = protos "\n" $0
+}
+
+END {
+    if (old_protos != protos) print protos > "proto.h"
+    printf "" > "proto.h-tstamp"
+}