Initial modularization with both Clang and VC hacks

Note: gave up on VC about half way though.

1 files changed, 67 insertions, 0 deletions

diff --git a/libbutl/string-parser.mxx b/libbutl/string-parser.mxx
new file mode 100644
index 0000000..559b938
--- /dev/null
+++ b/libbutl/string-parser.mxx
@@ -0,0 +1,67 @@
+// file      : libbutl/string-parser.mxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef __cpp_modules
+#pragma once
+#endif
+
+// C includes.
+
+#ifndef __cpp_lib_modules
+#include <string>
+#include <vector>
+#include <cstddef>   // size_t
+#include <utility>   // pair
+#include <stdexcept> // invalid_argument
+#endif
+
+// Other includes.
+
+#ifdef __cpp_modules
+export module butl.string_parser;
+#ifdef __cpp_lib_modules
+import std.core;
+#endif
+#endif
+
+#include <libbutl/export.hxx>
+
+LIBBUTL_MODEXPORT namespace butl
+{
+  namespace string_parser
+  {
+    class LIBBUTL_SYMEXPORT invalid_string: public std::invalid_argument
+    {
+    public:
+      invalid_string (std::size_t p, const std::string& d)
+        : invalid_argument (d), position (p) {}
+
+      std::size_t position; // Zero-based.
+    };
+
+    // Parse a whitespace-separated list of strings. Can contain single or
+    // double quoted substrings. No escaping is supported. If unquote is true,
+    // return one-level unquoted values. Throw invalid_string in case of
+    // invalid quoting.
+    //
+    LIBBUTL_SYMEXPORT std::vector<std::string>
+    parse_quoted (const std::string&, bool unquote);
+
+    // As above but return a list of string and zero-based position pairs.
+    // Position is useful for issuing diagnostics about an invalid string
+    // during second-level parsing.
+    //
+    LIBBUTL_SYMEXPORT std::vector<std::pair<std::string, std::size_t>>
+    parse_quoted_position (const std::string&, bool unquote);
+
+    // Remove a single level of quotes. Note that the format or the
+    // correctness of the quotation is not validated.
+    //
+    LIBBUTL_SYMEXPORT std::string
+    unquote (const std::string&);
+
+    LIBBUTL_SYMEXPORT std::vector<std::string>
+    unquote (const std::vector<std::string>&);
+  }
+}