move case-insensitive string stuff to utils.h

1 files changed, 29 insertions, 0 deletions

diff --git a/tools/utils.h b/tools/utils.h
index 4f5418f..77cff5e 100644
--- a/tools/utils.h
+++ b/tools/utils.h
@@ -1,6 +1,35 @@
 #include <string>
 #include <list>
 
+std::string noCR(const std::string bar);
+int cmp_casefold(const std::string& a, const std::string& b);
+
+/////////////////////////////////////////////////////////
+// Case insensitive comparison of strings
+
+class lessthan_foldcase{
+public:
+  bool operator() (const std::string& a, const std::string& b) const {
+    size_t a_len = a.length();
+    size_t b_len = b.length();
+
+    size_t lim = a_len < b_len ? a_len : b_len;
+
+    for (size_t i=0; i<lim; ++i)
+    {
+            char cha = toupper(a[i]);
+            char chb = toupper(b[i]);
+
+            if (cha < chb) return true;
+            if (cha > chb) return false;
+    }
+    // here if one is an extension of the other
+    if ( a_len < b_len ) return true;
+    return false;
+  }
+};
+
+
 std::string basename(const std::string path);
 int prefix(const std::string shorter, const std::string longer);
 std::string time_out(const int _ttt);