updates to http terminal

lib/httpserver/httpserver.cpp

@@ -6,8 +6,8 @@ bool HTTPServer::start() {
         logf("cant mount filesystem, EXIT !\n\r");
         return false;
     }
-    logf("[HTTPServer] LittleFS mounted !\n\r");
-    logf("[HTTPServer] root:\n\r");
+    logf("LittleFS mounted !\n\r");
+    logf("root:\n\r");
     this->listRoot();
     logf("\n\r");
 
@@ -30,15 +30,39 @@ bool HTTPServer::start() {
 
     // add static root file handler for http
     this->serveStatic("/", LittleFS, "/");
-    
+    this->begin();
+    Serial.printf("Server active on Port 80 !\n\r");
+    return true;
+}
+
+void HTTPServer::logf(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    char temp[64];
+    size_t len = vsnprintf(temp, sizeof(temp), format, args);
+    Serial.print(log_prefix);
+    Serial.write(temp, len);
+    va_end(args);
+}
+
+void HTTPServer::logt(const char *format, ...) {
+    va_list args;
+    va_start(args, format);
+    // append logging string to local buffer
+    if(tbuf_head < TBUF_LEN) {
+        size_t len = vsnprintf(tbuf+tbuf_head, TBUF_LEN-tbuf_head, format, args);
+        tbuf_head += len;
+    }
+    va_end(args);
+}
+
+void HTTPServer::start_apps() {
     // application handler
     this->on("/app=terminal", HTTP_POST, [this]() {
-        String log_msg = "terminal: millis: ";
-        log_msg += millis();
-        send(200, "text/plain", log_msg);
+        if(tbuf_head) {
+            send(200, "text/plain", tbuf);
+            tbuf_head = 0;
+        }
     });
 
-    this->begin();
-    Serial.printf("[HTTPServer] Server active on Port 80 !\n\r");
-    return true;
 }

lib/httpserver/httpserver.h

@@ -2,6 +2,8 @@
 
 #pragma once
 
+#include <vector>
+
 #include <ESP8266WebServer.h>
 #include <stdarg.h>
 #include "filesys.h"
@@ -9,24 +11,22 @@
 // debug log <ESP8266WebServer.h>
 // #define DEBUGV(f,...) do { Serial.printf(PSTR(f), ##__VA_ARGS__); } while (0)
 
-#define LOG_STR "[HTTPServer]"
+#define TBUF_LEN 256
 
 
 class HTTPServer : public ESP8266WebServer {
 
 private:
     const char* rootDir = "/";
+    const char* log_prefix = "[HTTPServer] ";
+
+    size_t tbuf_head = 0;
+    char tbuf[TBUF_LEN];
  
     void listRoot() {
         ls(rootDir);
     }
-    void logf(const char *format, ...) {
-        va_list args;
-        va_start(args, format);
-        Serial.print(LOG_STR);
-        Serial.printf(format, args);
-        va_end(args);
-    }
+
 
 public:
     HTTPServer(const int _port, const char* _rootDir) :
@@ -35,7 +35,11 @@ public:
     ~HTTPServer() 
     {
         Serial.printf("[HTTPServer] shut down ...\n\r");
-    }
-
+    }    
+    
     bool start();
+    void start_apps();
+    
+    void logf(const char *format, ...);
+    void logt(const char *format, ...);
 };