initial commit

Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>

libs/wxWidgets-3.3.1/include/wx/private/json.h

@@ -0,0 +1,88 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/private/json.h
+// Purpose:     Helper functions to handle JSON data
+// Author:      Tobias Taschner
+// Created:     2020-01-17
+// Copyright:   (c) 2020 wxWidgets development team
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_PRIVATE_JSON_H_
+#define _WX_PRIVATE_JSON_H_
+
+namespace wxJSON
+{
+
+// Decode a string literal including escape sequences
+// Returns false if the input string is not a valid JSON string
+bool DecodeString(const wxString& in, wxString* out)
+{
+    const wxWCharBuffer buf = in.wc_str();
+    const wchar_t* ch = buf.data();
+    // String has to chart with a quote
+    if (*(ch++) != '"')
+        return false;
+    out->clear();
+    out->reserve(buf.length());
+    const wchar_t* end = buf.data() + buf.length() - 1;
+    for (; ch < end; ++ch)
+    {
+        if (*ch == '\\')
+        {
+            switch (*(++ch))
+            {
+            case 'b':
+                out->append('\b');
+                break;
+            case 'n':
+                out->append('\n');
+                break;
+            case 'r':
+                out->append('\r');
+                break;
+            case 't':
+                out->append('\t');
+                break;
+            case 'f':
+                out->append('\f');
+                break;
+            case '/':
+                out->append('/');
+                break;
+            case '"':
+                out->append('"');
+                break;
+            case '\\':
+                out->append('\\');
+                break;
+            case 'u':
+#if SIZEOF_WCHAR_T == 2
+                            // In this case, we handle surrogates without doing anything special was wchar_t strings use UTF-17 encoding.
+                if (wxIsxdigit(ch[1]) && wxIsxdigit(ch[2]) &&
+                    wxIsxdigit(ch[3]) && wxIsxdigit(ch[4]))
+                {
+                    wchar_t uchar = wxHexToDec(wxString(&ch[3], 2)) |
+                        wxHexToDec(wxString(&ch[1], 2)) >> 8;
+                    out->append(uchar);
+                    ch += 4;
+                }
+#else
+    #error Implement correct surrogate handling.
+#endif
+                break;
+            default:
+                return false;
+                break;
+            }
+        }
+        else
+            out->append(*ch);
+    }
+
+    // String has to end with a quote
+    return (*ch) == '"';
+}
+
+} // namespace JSON
+
+#endif // _WX_PRIVATE_JSON_H_