src/web_buffer.h

   1 #include <stdarg.h>
   2 #include <time.h>
   3 #include "storage_number.h"
   4
   5 #ifndef NETDATA_WEB_BUFFER_H
   6 #define NETDATA_WEB_BUFFER_H 1
   7
   8 #define WEB_DATA_LENGTH_INCREASE_STEP 65536
   9
  10 struct web_buffer {
  11         long size;              // allocation size of buffer
  12         long len;               // current data length in buffer
  13         long sent;              // current data length sent to output
  14         char *buffer;   // the buffer
  15         int contenttype;
  16         long rlen;      // if non-zero, the excepted size of ifd
  17         time_t date;    // the date this content has been generated
  18 };
  19
  20 // content-types
  21 #define CT_APPLICATION_JSON                             1
  22 #define CT_TEXT_PLAIN                                   2
  23 #define CT_TEXT_HTML                                    3
  24 #define CT_APPLICATION_X_JAVASCRIPT             4
  25 #define CT_TEXT_CSS                                             5
  26 #define CT_TEXT_XML                                             6
  27 #define CT_APPLICATION_XML                              7
  28 #define CT_TEXT_XSL                                             8
  29 #define CT_APPLICATION_OCTET_STREAM             9
  30 #define CT_APPLICATION_X_FONT_TRUETYPE  10
  31 #define CT_APPLICATION_X_FONT_OPENTYPE  11
  32 #define CT_APPLICATION_FONT_WOFF                12
  33 #define CT_APPLICATION_VND_MS_FONTOBJ   13
  34 #define CT_IMAGE_SVG_XML                                14
  35
  36 #define web_buffer_need_bytes(buffer, needed_free_size) do { if(unlikely((buffer)->size - (buffer)->len < (needed_free_size))) web_buffer_increase((buffer), (needed_free_size)); } while(0)
  37
  38 #define web_buffer_flush(wb) wb->buffer[wb->len = 0] = '\0'
  39 void web_buffer_reset(struct web_buffer *wb);
  40
  41 void web_buffer_strcat(struct web_buffer *wb, const char *txt);
  42 void web_buffer_rrd_value(struct web_buffer *wb, calculated_number value);
  43
  44 void web_buffer_jsdate(struct web_buffer *wb, int year, int month, int day, int hours, int minutes, int seconds);
  45
  46 struct web_buffer *web_buffer_create(long size);
  47 void web_buffer_free(struct web_buffer *b);
  48 void web_buffer_increase(struct web_buffer *b, long free_size_required);
  49
  50 void web_buffer_snprintf(struct web_buffer *wb, size_t len, const char *fmt, ...);
  51
  52 void web_buffer_char_replace(struct web_buffer *wb, char from, char to);
  53
  54 #endif /* NETDATA_WEB_BUFFER_H */