Initial commit

1 files changed, 50 insertions, 0 deletions

diff --git a/toolsrc/src/vcpkglib_helpers.cpp b/toolsrc/src/vcpkglib_helpers.cpp
new file mode 100644
index 000000000..e947dc647
--- /dev/null
+++ b/toolsrc/src/vcpkglib_helpers.cpp
@@ -0,0 +1,50 @@
+#include "vcpkg_Checks.h"
+#include "vcpkglib_helpers.h"
+#include <unordered_map>
+
+namespace vcpkg {namespace details
+{
+    void optional_field(const std::unordered_map<std::string, std::string>& fields, std::string& out, const std::string& fieldname)
+    {
+        auto it = fields.find(fieldname);
+        if (it == fields.end())
+        {
+            out.clear();
+        }
+
+        else
+        {
+            out = it->second;
+        }
+    };
+
+    void required_field(const std::unordered_map<std::string, std::string>& fields, std::string& out, const std::string& fieldname)
+    {
+        auto it = fields.find(fieldname);
+        vcpkg::Checks::check_throw(it != fields.end(), "Required field not present: %s", fieldname);
+        out = it->second;
+    };
+
+    void parse_depends(const std::string& depends_string, std::vector<std::string>& out)
+    {
+        size_t cur = 0;
+        do
+        {
+            auto pos = depends_string.find(',', cur);
+            if (pos == std::string::npos)
+            {
+                out.push_back(depends_string.substr(cur));
+                return;
+            }
+            out.push_back(depends_string.substr(cur, pos - cur));
+
+            // skip comma and space
+            ++pos;
+            if (depends_string[pos] == ' ')
+                ++pos;
+
+            cur = pos;
+        }
+        while (cur != std::string::npos);
+    }
+}}