--- a/streamlet-examples/streamlet-common.h Mon Jan 27 00:43:39 2020 +0100
+++ b/streamlet-examples/streamlet-common.h Tue Jan 28 14:26:39 2020 +0100
@@ -23,6 +23,7 @@
#include <sstream>
#include <codecvt>
#include <locale>
+#include <regex>
#include "../src/StreamletMsg.h"
@@ -36,7 +37,7 @@
using S = relpipe::in::filesystem::StreamletMsg;
class Streamlet {
-private:
+protected:
class Message {
public:
@@ -59,6 +60,8 @@
}
};
+private:
+
static const char SEPARATOR = '\0';
int readInt() {
@@ -93,6 +96,14 @@
return m;
}
+ /**
+ * The std::wsmatch contains only references to original string,
+ * so we need to copy it in order to make it persistent and independent from variables that may evaporate.
+ */
+ void copyMatches(std::wsmatch& source, std::vector<std::wstring>& destination) {
+ for (std::wstring s : source) destination.emplace_back(s);
+ }
+
void processMessages() {
while (true) {
Message m = read();
@@ -128,6 +139,11 @@
public:
std::wstring name;
std::wstring value;
+ std::vector<std::wstring> nameMatch;
+ std::vector<std::wstring> valueMatch;
+
+ Option(std::wstring name, std::wstring value) : name(name), value(value) {
+ }
};
std::vector<std::wstring> versionsSupported;
@@ -201,6 +217,38 @@
else return defaultValue;
}
+ virtual std::vector<Option> getOptions(std::wstring name) {
+ std::vector<Option> result;
+ for (Option o : options) if (o.name == name) result.push_back(o);
+ return result;
+ }
+
+ virtual std::vector<Option> getOptions(std::wregex namePattern) {
+ std::vector<Option> result;
+ std::wsmatch nameMatch;
+ for (Option o : options) if (std::regex_match(o.name, nameMatch, namePattern)) {
+ copyMatches(nameMatch, o.nameMatch);
+ result.push_back(o);
+ }
+ return result;
+ }
+
+ virtual std::vector<Option> getOptions(std::wregex namePattern, std::wregex valuePattern) {
+ // TODO: support multiple modes:
+ // a) throw an exception if valuePattern does not match
+ // b) return option even if valuePattern does not match (valueMatch will be empty)
+ // c) skip options with value not matching (current behavior)
+ std::wsmatch nameMatch;
+ std::wsmatch valueMatch;
+ std::vector<Option> result;
+ for (Option o : options) if (std::regex_match(o.name, nameMatch, namePattern) && std::regex_match(o.value, valueMatch, valuePattern)) {
+ copyMatches(nameMatch, o.nameMatch);
+ copyMatches(valueMatch, o.valueMatch);
+ result.push_back(o);
+ }
+ return result;
+ }
+
virtual std::vector<AttributeMetadata> getOutputAttributesMetadata() = 0;
virtual std::vector<OutputAttribute> getOutputAttributes() = 0;
@@ -213,7 +261,11 @@
try {
processMessages();
return 0;
+ } catch (std::exception& e) {
+ write({S::STREAMLET_ERROR, L"xxxx", L"Exception in streamlet: " + convertor.from_bytes(e.what())}); // FIXME: correct error codes
+ return 1;
} catch (...) {
+ write({S::STREAMLET_ERROR, L"xxxx", L"Unknown exception in streamlet."}); // FIXME: correct error codes
return 1;
}
}
@@ -225,6 +277,7 @@
#define STREAMLET_RUN(clazz) \
int main(int argc, char** argv) { \
+ setlocale(LC_ALL, ""); \
clazz s; \
return s.run(); \
}