From b7c0293598d45f052a41c3ed6580d98801280cd7 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Mon, 7 Mar 2016 12:29:50 +0200
Subject: Implement compiler guessing, including icc and msvc

---
 build2/utility.cxx | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

(limited to 'build2/utility.cxx')

diff --git a/build2/utility.cxx b/build2/utility.cxx
index c3dd99f..1b8be65 100644
--- a/build2/utility.cxx
+++ b/build2/utility.cxx
@@ -46,6 +46,43 @@ namespace build2
   // <build2/utility>
   //
 
+  string&
+  trim (string& l)
+  {
+    /*
+    assert (trim (r = "") == "");
+    assert (trim (r = " ") == "");
+    assert (trim (r = " \t\r") == "");
+    assert (trim (r = "a") == "a");
+    assert (trim (r = " a") == "a");
+    assert (trim (r = "a ") == "a");
+    assert (trim (r = " \ta") == "a");
+    assert (trim (r = "a \r") == "a");
+    assert (trim (r = " a ") == "a");
+    assert (trim (r = " \ta \r") == "a");
+    */
+
+    size_t i (0), n (l.size ());
+
+    for (char c;
+         i != n && ((c = l[i]) == ' ' || c == '\t' || c == '\r');
+         ++i) ;
+
+    for (char c;
+         n != i && ((c = l[n - 1]) == ' ' || c == '\t' || c == '\r');
+         --n) ;
+
+    if (i != 0)
+    {
+      string s (l, i, n - i);
+      l.swap (s);
+    }
+    else if (n != l.size ())
+      l.resize (n);
+
+    return l;
+  }
+
   const string empty_string;
   const path empty_path;
   const dir_path empty_dir_path;
-- 
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