nhttpd add helper for json,xml outputs

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-beta@1674 e54a6e83-5905-42d5-8d5c-058d10e6a962


Origin commit data
------------------
Branch: ni/coolstream
Commit: e19eaf7289
Author: yjogol <yjogol2@online.de>
Date: 2011-09-08 (Thu, 08 Sep 2011)



------------------
This commit was generated by Migit

src/nhttpd/yhttpd_core/helper.cpp

@@ -8,6 +8,8 @@
 #include <cstdlib> 		// calloc and free prototypes.
 #include <cstring>		// str* and memset prototypes.
 #include <cstdarg>
+#include <sstream>
+#include <iomanip>
 
 // yhttpd
 #include "yconfig.h"
@@ -261,3 +263,50 @@ bool write_to_file(std::string filename, std::string content) {
 	} else
 		return false;
 }
+
+//-----------------------------------------------------------------------------
+// JSON: create pair string "<_key>". "<_value>"
+// Handle wrong quotes
+//-----------------------------------------------------------------------------
+std::string json_out_quote_convert(std::string _str) {
+	replace(_str, "\"", "\'");
+	return _str;
+}
+//-----------------------------------------------------------------------------
+// JSON: create pair string "<_key>". "<_value>"
+// Handle wrong quotes
+//-----------------------------------------------------------------------------
+std::string json_out_pair(std::string _key, std::string _value) {
+	replace(_key, "\"", "");
+	replace(_value, "\"", "\'");
+	return "\"" + _key + "\": " + "\"" + _value + "\"";
+}
+//-----------------------------------------------------------------------------
+// JSON: create success return string
+//-----------------------------------------------------------------------------
+std::string json_out_success(std::string _result) {
+	return "{\"success\": \"true\", \"data\":{" + _result + "}}";
+}
+//-----------------------------------------------------------------------------
+// JSON: create success return string
+//-----------------------------------------------------------------------------
+std::string json_out_error(std::string _error) {
+	return "{\"success\": \"false\", \"error\":{\"text\": \"" + _error + "\"}}";
+}
+//-----------------------------------------------------------------------------
+// JSON: convert string to JSON-String
+//-----------------------------------------------------------------------------
+std::string json_convert_string(std::string s) {
+	std::stringstream ss;
+	for (size_t i = 0; i < s.length(); ++i) {
+		if (unsigned(s[i]) < '\x20' || s[i] == '\\' || s[i] == '"') {
+			ss << "\\u" << std::setfill('0') << std::setw(4) << std::hex
+					<< unsigned(s[i]);
+		}
+		else {
+			ss << s[i];
+		}
+	}
+	return ss.str();
+}
+

src/nhttpd/yhttpd_core/helper.h

@@ -40,4 +40,13 @@ bool nocase_compare (char c1, char c2);
 std::string timeString(time_t time);
 bool write_to_file(std::string filename, std::string content);
 
+//-----------------------------------------------------------------------------
+// JSON Helpers
+//-----------------------------------------------------------------------------
+std::string json_out_quote_convert(std::string _str);
+std::string json_out_pair(std::string _key, std::string _value);
+std::string json_out_success(std::string _result);
+std::string json_out_error(std::string _error);
+std::string json_convert_string(std::string s);
+
 #endif /* __yhttpd_helper_h__ */

src/nhttpd/yhttpd_core/yhook.cpp

@@ -50,6 +50,7 @@ THandleStatus CyhookHandler::Hooks_SendResponse() {
 //-----------------------------------------------------------------------------
 THandleStatus CyhookHandler::Hooks_PrepareResponse() {
 	log_level_printf(4, "PrepareResponse Hook-List Start\n");
+	outType = checkOutput();
 	THandleStatus _status = HANDLED_NONE;
 	THookList::iterator i = HookList.begin();
 	for (; i != HookList.end(); i++) {
@@ -363,3 +364,139 @@ void CyhookHandler::printf(const char *fmt, ...) {
 	va_end(arglist);
 	Write(outbuf);
 }
+//-----------------------------------------------------------------------------
+TOutType CyhookHandler::checkOutput() {
+	// get outType
+	outType = plain; // plain
+	if (ParamList["format"] == "json" || !(ParamList["json"].empty()) )
+		outType = json;
+	else if (ParamList["format"] == "xml" || !(ParamList["xml"].empty()) )
+		outType = xml;
+	return outType;
+}
+//-----------------------------------------------------------------------------
+TOutType CyhookHandler::outStart() {
+	// get outType
+	outType = plain; // plain
+	if (ParamList["format"] == "json")
+		outType = json;
+	else if (ParamList["format"] == "xml" || !(ParamList["xml"].empty()) )
+		outType = xml;
+	// set response header
+	if (outType == xml)
+		SetHeader(HTTP_OK, "text/xml; charset=UTF-8");
+	else
+		SetHeader(HTTP_OK, "text/plain; charset=UTF-8");
+
+	return outType;
+}
+
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outIndent() {
+	return "";
+}
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outPair(std::string _key, std::string _content, bool _next) {
+	std::string result = "";
+	switch (outType) {
+	case xml:
+		result = outIndent() + "<" + _key + ">" + _content + "</" + _key + ">";
+		result += "\n";
+		break;
+	case json:
+		result = outIndent() + "\"" + _key + "\": \"" + _content + "\"";
+		if(_next)
+			result += ",";
+		result += "\n";
+		break;
+	default:
+		result = _content;
+		break;
+	}
+	return result;
+}
+
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outArray(std::string _key, std::string _content) {
+	std::string result = "";
+	switch (outType) {
+	case xml:
+		//TODO: xml check and DESC check
+		result = outIndent() + "<" + _key + ">\n" + _content + "</" + _key + ">";
+		break;
+	case json:
+		//TODO: json check
+		result = outIndent() + "\"" + _key + "\": [" + _content + "]";
+		break;
+	default:
+		result = _content;
+		break;
+	}
+	return result + "\n";
+}
+
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outArrayItem(std::string _key, std::string _content, bool _next) {
+	std::string result = "";
+	switch (outType) {
+	case xml:
+		//TODO: xml check and DESC check
+		result = outIndent() + "<" + _key + ">\n" + _content + "</" + _key + ">";
+		break;
+	case json:
+		//TODO: json check
+		result = outIndent() + "{" + _content + "}";
+		if(_next)
+			result += ",";
+		break;
+	default:
+		result = _content;
+		break;
+	}
+	return result + "\n";
+}
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outCollection(std::string _key, std::string _content) {
+	std::string result = "";
+	switch (outType) {
+	case xml:
+		//TODO: xml check and DESC check
+		result = outIndent() + "<" + _key + ">\n" + _content + "</" + _key + ">";
+		break;
+	case json:
+		//TODO: json check
+		result = outIndent() + "\"" + _key + "\": {" + _content + "}";
+		break;
+	default:
+		result = _content;
+		break;
+	}
+	return result + "\n";
+}
+
+//-----------------------------------------------------------------------------
+std::string CyhookHandler::outValue(std::string _content) {
+	std::string result = "";
+	switch (outType) {
+	case xml:
+		result = "<![CDATA[" + _content + "]]>";
+		break;
+	case json:
+//		result = json_convert_string(_content);
+		result = _content;
+		break;
+
+	default:
+		result = _content;
+		break;
+	}
+	return result;
+}
+
+std::string CyhookHandler::outNext() {
+	if(outType == json)
+		return ",";
+	else
+		return "";
+}
+

src/nhttpd/yhttpd_core/yhook.h

@@ -81,6 +81,17 @@ typedef enum
 } THandleStatus;
 typedef std::list<Cyhook *> THookList;
 
+//-----------------------------------------------------------------------------
+// Output Tyoe.
+//-----------------------------------------------------------------------------
+typedef enum
+{
+	plain	= 0,
+	html,
+	xml,
+	json
+} TOutType;
+
 //-----------------------------------------------------------------------------
 // An abstract Hook-Class. Custom Hook must be inherited.
 //-----------------------------------------------------------------------------
@@ -176,11 +187,23 @@ public:
 	void WriteLn(char const *text)				{WriteLn(std::string(text));}
 	void SendHTMLHeader(const std::string& Titel);
 	void SendHTMLFooter(void);
-	void SendOk(void)							{(ParamList["response"]=="json") ? Write("{\"success\": true}") : Write("ok");}
+	void SendOk(void)							{(ParamList["response"]=="json") ? Write("{\"success\": \"true\"}") : Write("ok");}
-	void SendError(void)						{(ParamList["response"]=="json") ? Write("{\"success\": false}") : Write("error");}
+	void SendError(void)						{(ParamList["response"]=="json") ? Write("{\"success\": \"false\"}") : Write("error");}
 	void SendFile(const std::string& url)		{NewURL = url; status = HANDLED_SENDFILE;}
 	void SendRedirect(const std::string& url)	{httpStatus=HTTP_MOVED_TEMPORARILY; NewURL = url; status = HANDLED_REDIRECTION;}
 	void SendRewrite(const std::string& url)	{NewURL = url; status = HANDLED_REWRITE;}
+
+	int _outIndent;
+	TOutType outType;			// Outputtpe = plain (default)|xml|json
+	TOutType outStart();
+	TOutType checkOutput();
+	std::string outIndent();
+	std::string outPair(std::string _key, std::string _content, bool _next);
+	std::string outArray(std::string _key, std::string _content);
+	std::string outArrayItem(std::string _key, std::string _content, bool _next);
+	std::string outCollection(std::string _key,std::string  _content);
+	std::string outValue(std::string _content);
+	std::string outNext();
 	friend class CyParser;
 };