2 files changed, 82 insertions, 20 deletions

diff --git a/libnetdata/buffer/buffer.c b/libnetdata/buffer/buffer.c
index 8a32184f6..d0940588f 100644
--- a/libnetdata/buffer/buffer.c
+++ b/libnetdata/buffer/buffer.c
@@ -136,6 +136,66 @@ void buffer_print_llu(BUFFER *wb, unsigned long long uvalue)
     wb->len += wstr - str;
 }
 
+void buffer_print_ll(BUFFER *wb, long long value)
+{
+    buffer_need_bytes(wb, 50);
+
+    if(value < 0) {
+        buffer_fast_strcat(wb, "-", 1);
+        value = -value;
+    }
+
+    buffer_print_llu(wb, value);
+}
+
+static unsigned char bits03_to_hex[16] = {
+    [0] = '0',
+    [1] = '1',
+    [2] = '2',
+    [3] = '3',
+    [4] = '4',
+    [5] = '5',
+    [6] = '6',
+    [7] = '7',
+    [8] = '8',
+    [9] = '9',
+    [10] = 'A',
+    [11] = 'B',
+    [12] = 'C',
+    [13] = 'D',
+    [14] = 'E',
+    [15] = 'F'
+};
+
+void buffer_print_llu_hex(BUFFER *wb, unsigned long long value)
+{
+    unsigned char buffer[sizeof(unsigned long long) * 2 + 2 + 1];   // 8 bytes * 2 + '0x' + '\0'
+    unsigned char *e = &buffer[sizeof(unsigned long long) * 2 + 2];
+    unsigned char *p = e;
+
+    *p-- = '\0';
+    *p-- = bits03_to_hex[value & 0xF];
+    value >>= 4;
+    if(value) {
+        *p-- = bits03_to_hex[value & 0xF];
+        value >>= 4;
+
+        while(value) {
+            *p-- = bits03_to_hex[value & 0xF];
+            value >>= 4;
+
+            if(value) {
+                *p-- = bits03_to_hex[value & 0xF];
+                value >>= 4;
+            }
+        }
+    }
+    *p-- = 'x';
+    *p   = '0';
+
+    buffer_fast_strcat(wb, (char *)p, e - p);
+}
+
 void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len) {
     if(unlikely(!txt || !*txt)) return;
 
diff --git a/libnetdata/buffer/buffer.h b/libnetdata/buffer/buffer.h
index 42425b4cb..ce6f52899 100644
--- a/libnetdata/buffer/buffer.h
+++ b/libnetdata/buffer/buffer.h
@@ -49,35 +49,37 @@ typedef struct web_buffer {
 #define buffer_no_cacheable(wb) do { (wb)->options |= WB_CONTENT_NO_CACHEABLE; if((wb)->options & WB_CONTENT_CACHEABLE)    (wb)->options &= ~WB_CONTENT_CACHEABLE;  (wb)->expires = 0; } while(0)
 
 #define buffer_strlen(wb) ((wb)->len)
-extern const char *buffer_tostring(BUFFER *wb);
+const char *buffer_tostring(BUFFER *wb);
 
 #define buffer_flush(wb) wb->buffer[(wb)->len = 0] = '\0'
-extern void buffer_reset(BUFFER *wb);
+void buffer_reset(BUFFER *wb);
 
-extern void buffer_strcat(BUFFER *wb, const char *txt);
-extern void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len);
-extern void buffer_rrd_value(BUFFER *wb, NETDATA_DOUBLE value);
+void buffer_strcat(BUFFER *wb, const char *txt);
+void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len);
+void buffer_rrd_value(BUFFER *wb, NETDATA_DOUBLE value);
 
-extern void buffer_date(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
-extern void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
+void buffer_date(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
+void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
 
-extern BUFFER *buffer_create(size_t size);
-extern void buffer_free(BUFFER *b);
-extern void buffer_increase(BUFFER *b, size_t free_size_required);
+BUFFER *buffer_create(size_t size);
+void buffer_free(BUFFER *b);
+void buffer_increase(BUFFER *b, size_t free_size_required);
 
-extern void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...) PRINTFLIKE(3, 4);
-extern void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args);
-extern void buffer_sprintf(BUFFER *wb, const char *fmt, ...) PRINTFLIKE(2,3);
-extern void buffer_strcat_jsonescape(BUFFER *wb, const char *txt);
-extern void buffer_strcat_htmlescape(BUFFER *wb, const char *txt);
+void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...) PRINTFLIKE(3, 4);
+void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args);
+void buffer_sprintf(BUFFER *wb, const char *fmt, ...) PRINTFLIKE(2,3);
+void buffer_strcat_jsonescape(BUFFER *wb, const char *txt);
+void buffer_strcat_htmlescape(BUFFER *wb, const char *txt);
 
-extern void buffer_char_replace(BUFFER *wb, char from, char to);
+void buffer_char_replace(BUFFER *wb, char from, char to);
 
-extern char *print_number_lu_r(char *str, unsigned long uvalue);
-extern char *print_number_llu_r(char *str, unsigned long long uvalue);
-extern char *print_number_llu_r_smart(char *str, unsigned long long uvalue);
+char *print_number_lu_r(char *str, unsigned long uvalue);
+char *print_number_llu_r(char *str, unsigned long long uvalue);
+char *print_number_llu_r_smart(char *str, unsigned long long uvalue);
 
-extern void buffer_print_llu(BUFFER *wb, unsigned long long uvalue);
+void buffer_print_llu(BUFFER *wb, unsigned long long uvalue);
+void buffer_print_ll(BUFFER *wb, long long value);
+void buffer_print_llu_hex(BUFFER *wb, unsigned long long value);
 
 static inline void buffer_need_bytes(BUFFER *buffer, size_t needed_free_size) {
     if(unlikely(buffer->size - buffer->len < needed_free_size))