[gdal][api] GDALDriverHasOpenOption (#11517)

autotest/gcore/misc.py

@@ -1030,6 +1030,24 @@ def test_misc_general_cmd_line_processor(tmp_path):
     assert processed == ["program", "2", str(tmp_path / "a_path"), "a_string"]
 
 
+###############################################################################
+# Test GDALDriverHasOpenOption()
+
+
+@pytest.mark.require_driver("GTiff")
+@pytest.mark.parametrize(
+    "driver_name,open_option,expected",
+    [
+        ("GTiff", "XXXX", False),
+        ("GTiff", "GEOTIFF_KEYS_FLAVOR", True),
+    ],
+)
+def test_misc_gdal_driver_has_open_option(driver_name, open_option, expected):
+    driver = gdal.GetDriverByName(driver_name)
+    assert driver is not None
+    assert driver.HasOpenOption(open_option) == expected
+
+
 ###############################################################################
 
 

gcore/gdal.h

@@ -1152,6 +1152,9 @@ char CPL_DLL **GDALGetOutputDriversForDatasetName(const char *pszDestFilename,
                                                   bool bSingleMatch,
                                                   bool bEmitWarning);
 
+bool CPL_DLL GDALDriverHasOpenOption(GDALDriverH,
+                                     const char *pszOpenOptionName);
+
 /* The following are deprecated */
 const char CPL_DLL *CPL_STDCALL GDALGetDriverShortName(GDALDriverH);
 const char CPL_DLL *CPL_STDCALL GDALGetDriverLongName(GDALDriverH);

gcore/gdal_priv.h

@@ -2157,6 +2157,14 @@ class CPL_DLL GDALDriver : public GDALMajorObject
                                 CSLConstList papszVectorTranslateArguments,
                                 char ***ppapszFailureReasons);
 
+    /**
+     * \brief Returns TRUE if the given open option is supported by the driver.
+     * @param pszOpenOptionName name of the open option to be checked
+     * @return TRUE if the driver supports the open option
+     * @since GDAL 3.11
+     */
+    bool HasOpenOption(const char *pszOpenOptionName) const;
+
     GDALDataset *
     VectorTranslateFrom(const char *pszDestName, GDALDataset *poSourceDS,
                         CSLConstList papszVectorTranslateArguments,

gcore/gdaldriver.cpp

@@ -1478,6 +1478,28 @@ bool GDALDriver::CanVectorTranslateFrom(
     return bRet;
 }
 
+bool GDALDriver::HasOpenOption(const char *pszOpenOptionName) const
+{
+    if (pszOpenOptionName == nullptr)
+        return false;
+
+    // Const cast is safe here since we are only reading the metadata
+    auto pszOOMd{const_cast<GDALDriver *>(this)->GetMetadataItem(
+        GDAL_DMD_OPENOPTIONLIST)};
+    if (pszOOMd == nullptr)
+        return false;
+
+    const CPLXMLTreeCloser oXml{CPLParseXMLString(pszOOMd)};
+    for (CPLXMLNode *option = oXml->psChild; option != nullptr;
+         option = option->psNext)
+    {
+        if (EQUAL(CPLGetXMLValue(CPLGetXMLNode(option, "name"), nullptr, ""),
+                  pszOpenOptionName))
+            return true;
+    }
+    return false;
+}
+
 /************************************************************************/
 /*                         VectorTranslateFrom()                        */
 /************************************************************************/
@@ -1985,6 +2007,23 @@ CPLErr CPL_STDCALL GDALCopyDatasetFiles(GDALDriverH hDriver,
     return GDALDriver::FromHandle(hDriver)->CopyFiles(pszNewName, pszOldName);
 }
 
+/************************************************************************/
+/*                       GDALDriverHasOpenOption()                      */
+/************************************************************************/
+
+/**
+ * \brief Returns TRUE if the given open option is supported by the driver.
+ * @param hDriver the handle of the driver
+ * @param pszOpenOptionName name of the open option to be checked
+ * @return TRUE if the driver supports the open option
+ * @since GDAL 3.11
+ */
+bool GDALDriverHasOpenOption(GDALDriverH hDriver, const char *pszOpenOptionName)
+{
+    VALIDATE_POINTER1(hDriver, "GDALDriverHasOpenOption", false);
+    return GDALDriver::FromHandle(hDriver)->HasOpenOption(pszOpenOptionName);
+}
+
 /************************************************************************/
 /*                       GDALGetDriverShortName()                       */
 /************************************************************************/

swig/include/Driver.i

@@ -109,6 +109,10 @@ public:
     return GDALCopyDatasetFiles( self, newName, oldName );
   }
 
+  bool HasOpenOption( const char *openOptionName ) {
+    return GDALDriverHasOpenOption( self, openOptionName );
+  }
+
 #ifdef SWIGPYTHON
   bool TestCapability(const char* cap) {
     // TODO: should this also check DCAP entries in driver metadata?