aboutsummaryrefslogtreecommitdiff
path: root/src/function
diff options
context:
space:
mode:
authorAdrian Kummerländer2014-05-25 21:49:59 +0200
committerAdrian Kummerländer2014-05-25 21:49:59 +0200
commitc5a11763985172f54d0da8a2a2778f882f3656e5 (patch)
tree2a2eb165424ecf91b0b229d36de1da79e4bdbaa3 /src/function
parentbf88fb942d624f40218716d375744aa14b3406a8 (diff)
downloadInputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar.gz
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar.bz2
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar.lz
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar.xz
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.tar.zst
InputXSLT-c5a11763985172f54d0da8a2a2778f882f3656e5.zip
Implemented basic external "execute" function
* enables execution of external programs ** second parameter is passed to stdin ** stdout is captured and returned ** based on booost::process * this was implemented to enable access to external content preprocessors such as markdown
Diffstat (limited to 'src/function')
-rw-r--r--src/function/execute.cc77
-rw-r--r--src/function/execute.h28
2 files changed, 105 insertions, 0 deletions
diff --git a/src/function/execute.cc b/src/function/execute.cc
new file mode 100644
index 0000000..f19ba75
--- /dev/null
+++ b/src/function/execute.cc
@@ -0,0 +1,77 @@
+#include "execute.h"
+
+#include <xercesc/dom/DOMDocument.hpp>
+#include <xercesc/dom/DOMImplementation.hpp>
+#include <xercesc/dom/DOMElement.hpp>
+
+#include <boost/process.hpp>
+
+#include "support/xerces_string_guard.h"
+#include "support/dom/result_node_facade.h"
+
+namespace InputXSLT {
+
+xercesc::DOMDocument* FunctionExecute::constructDocument(
+ const InputXSLT::FilesystemContext&,
+ const FunctionBase::parameter_tuple& parameters
+) {
+ const std::string& executablePath(
+ std::get<0>(parameters)
+ );
+
+ const std::string& stdinText(
+ std::get<1>(parameters)
+ );
+
+ xercesc::DOMDocument* const domDocument(
+ xercesc::DOMImplementation::getImplementation()->createDocument(
+ nullptr,
+ *XercesStringGuard<XMLCh>("content"),
+ nullptr
+ )
+ );
+
+ xercesc::DOMNode* const rootNode(
+ domDocument->getDocumentElement()
+ );
+
+ boost::process::context context;
+ context.stdout_behavior = boost::process::capture_stream();
+ context.stdin_behavior = boost::process::capture_stream();
+
+ boost::process::child process(
+ boost::process::launch(
+ executablePath,
+ std::vector<std::string>{""},
+ context
+ )
+ );
+
+ boost::process::postream& inputStream = process.get_stdin();
+ boost::process::pistream& outputStream = process.get_stdout();
+
+ inputStream << stdinText;
+ inputStream.close();
+
+ const std::string resultText(
+ (std::istreambuf_iterator<char>(outputStream)),
+ (std::istreambuf_iterator<char>())
+ );
+
+ boost::process::status status = process.wait();
+
+ if ( status.exited() ) {
+ ResultNodeFacade result(domDocument, rootNode, "result");
+
+ result.setValueNode("code", std::to_string(status.exit_status()));
+ result.setValueNode("output", resultText);
+ } else {
+ ResultNodeFacade result(domDocument, rootNode, "error");
+
+ result.setValueNode("code", std::to_string(status.exit_status()));
+ }
+
+ return domDocument;
+}
+
+}
diff --git a/src/function/execute.h b/src/function/execute.h
new file mode 100644
index 0000000..12167da
--- /dev/null
+++ b/src/function/execute.h
@@ -0,0 +1,28 @@
+#ifndef INPUTXSLT_SRC_FUNCTION_EXECUTE_H_
+#define INPUTXSLT_SRC_FUNCTION_EXECUTE_H_
+
+#include "base.h"
+
+namespace InputXSLT {
+
+class FunctionExecute : public FunctionBase<
+ FunctionExecute,
+ std::string,
+ std::string
+> {
+ public:
+ using FunctionBase::FunctionBase;
+
+ protected:
+ friend FunctionBase;
+
+ xercesc::DOMDocument* constructDocument(
+ const FilesystemContext&,
+ const FunctionBase::parameter_tuple&
+ );
+
+};
+
+}
+
+#endif // INPUTXSLT_SRC_FUNCTION_EXECUTE_H_