From 7ad68ea531430025f5ddf304c72ec91311eb973e Mon Sep 17 00:00:00 2001
From: Julien Osman <julien.osman@csgroup.eu>
Date: Wed, 8 Jul 2020 16:52:34 +0200
Subject: [PATCH] ENH: Add methods to access lists in XMLMetadataSupplier
---
.../Metadata/include/otbXMLMetadataSupplier.h | 22 ++++++++++
.../Metadata/src/otbXMLMetadataSupplier.cxx | 40 +++++++++++++++++++
2 files changed, 62 insertions(+)
diff --git a/Modules/Core/Metadata/include/otbXMLMetadataSupplier.h b/Modules/Core/Metadata/include/otbXMLMetadataSupplier.h
index dceb3818a7..e6fb2f1d31 100644
--- a/Modules/Core/Metadata/include/otbXMLMetadataSupplier.h
+++ b/Modules/Core/Metadata/include/otbXMLMetadataSupplier.h
@@ -49,6 +49,26 @@ public:
* If band >= 0, the metadata value is looked in the specified band*/
const std::string GetMetadataValue(const std::string path, bool& hasValue, int band=1) const override;
+ const std::string GetFirstMetadataValue(const std::string paths, bool& hasValue) const;
+
+ template <typename T> T GetFirstAs(std::string path) const
+ {
+ bool hasValue;
+ std::string ret = GetFirstMetadataValue(path, hasValue);
+ if (!hasValue)
+ {
+ otbGenericExceptionMacro(MissingMetadataException,<<"Missing metadata '"<<path<<"'")
+ }
+ try
+ {
+ return boost::lexical_cast<T>(ret);
+ }
+ catch (boost::bad_lexical_cast&)
+ {
+ otbGenericExceptionMacro(MissingMetadataException,<<"Bad metadata value for '"<<path<<"', got: "<<ret)
+ }
+ }
+
std::string GetResourceFile(std::string="") const override;
int GetNbBands() const override;
@@ -70,6 +90,8 @@ protected:
virtual char** ReadXMLToList(CPLXMLNode* psNode, char** papszList,
const char* pszName = "");
+ char **CSLFetchPartialNameValueMultiple(CSLConstList papszStrList, const char *pszName) const;
+
private:
/** List of resource files */
std::string m_FileName;
diff --git a/Modules/Core/Metadata/src/otbXMLMetadataSupplier.cxx b/Modules/Core/Metadata/src/otbXMLMetadataSupplier.cxx
index 6731bba48e..c93f822c1b 100644
--- a/Modules/Core/Metadata/src/otbXMLMetadataSupplier.cxx
+++ b/Modules/Core/Metadata/src/otbXMLMetadataSupplier.cxx
@@ -54,6 +54,34 @@ const std::string XMLMetadataSupplier::GetMetadataValue(const std::string path,
return std::string(ret);
}
+const std::string XMLMetadataSupplier::GetFirstMetadataValue(const std::string path, bool& hasValue) const
+{
+ std::size_t found = path.find("_#");
+ char ** values = this->CSLFetchPartialNameValueMultiple(m_MetadataDic, path.substr(0, found).c_str());
+ std::size_t start = found + 2;
+ if (found != std::string::npos)
+ found = path.find("_#", found);
+
+ while(found != std::string::npos)
+ {
+ values = this->CSLFetchPartialNameValueMultiple(m_MetadataDic, path.substr(start, found).c_str());
+ start = found;
+ found = path.find("_#", found + 2);
+ }
+
+ if (values[0] != nullptr)
+ {
+ hasValue = true;
+ std::string ret = std::string(values[0]);
+ return ret.substr(ret.find('=') + 1);
+ }
+ else
+ {
+ hasValue = false;
+ return "";
+ }
+}
+
std::string XMLMetadataSupplier::GetResourceFile(std::string) const
{
return m_FileName;
@@ -165,6 +193,18 @@ char** XMLMetadataSupplier::ReadXMLToList(CPLXMLNode* psNode, char** papszList,
return papszList;
}
+char ** XMLMetadataSupplier::CSLFetchPartialNameValueMultiple(CSLConstList papszStrList, const char *pszName) const
+{
+ if( papszStrList == nullptr || pszName == nullptr )
+ return nullptr;
+
+ char **papszValues = nullptr;
+ for( ; *papszStrList != nullptr ; ++papszStrList )
+ if( strstr(*papszStrList, pszName) )
+ papszValues = CSLAddString(papszValues, *papszStrList);
+ return papszValues;
+}
+
int XMLMetadataSupplier::GetNbBands() const
{
return 0;
--
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