From efc7a579e880ec15ebe9afc0d8766c85c7d53ec2 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Mon, 19 Apr 2010 13:46:58 +0000
Subject: * Don't use the ATerm library for parsing/printing .drv files.

---
 src/libutil/util.cc | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

(limited to 'src/libutil/util.cc')

diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index d28d0e823c05..98912e7a002c 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -1006,6 +1006,47 @@ bool hasSuffix(const string & s, const string & suffix)
 }
 
 
+void expect(std::istream & str, const string & s)
+{
+    char s2[s.size()];
+    str.read(s2, s.size());
+    if (string(s2, s.size()) != s)
+        throw Error(format("expected string `%1%'") % s);
+}
+
+
+string parseString(std::istream & str)
+{
+    string res;
+    expect(str, "\"");
+    int c;
+    while ((c = str.get()) != '"')
+        if (c == '\\') {
+            c = str.get();
+            if (c == 'n') res += '\n';
+            else if (c == 'r') res += '\r';
+            else if (c == 't') res += '\t';
+            else res += c;
+        }
+        else res += c;
+    return res;
+}
+
+
+bool endOfList(std::istream & str)
+{
+    if (str.peek() == ',') {
+        str.get();
+        return false;
+    }
+    if (str.peek() == ']') {
+        str.get();
+        return true;
+    }
+    return false;
+}
+
+
 void ignoreException()
 {
     try {
-- 
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