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 16384
   9
  10 typedef struct web_buffer {
  11         size_t size;            // allocation size of buffer
  12         size_t len;             // current data length in buffer
  13         char *buffer;   // the buffer
  14         int contenttype;
  15         time_t date;    // the date this content has been generated
  16 } BUFFER;
  17
  18 // content-types
  19 #define CT_APPLICATION_JSON                             1
  20 #define CT_TEXT_PLAIN                                   2
  21 #define CT_TEXT_HTML                                    3
  22 #define CT_APPLICATION_X_JAVASCRIPT             4
  23 #define CT_TEXT_CSS                                             5
  24 #define CT_TEXT_XML                                             6
  25 #define CT_APPLICATION_XML                              7
  26 #define CT_TEXT_XSL                                             8
  27 #define CT_APPLICATION_OCTET_STREAM             9
  28 #define CT_APPLICATION_X_FONT_TRUETYPE  10
  29 #define CT_APPLICATION_X_FONT_OPENTYPE  11
  30 #define CT_APPLICATION_FONT_WOFF                12
  31 #define CT_APPLICATION_FONT_WOFF2               13
  32 #define CT_APPLICATION_VND_MS_FONTOBJ   14
  33 #define CT_IMAGE_SVG_XML                                15
  34
  35 #define buffer_strlen(wb) ((wb)->len)
  36 extern const char *buffer_tostring(BUFFER *wb);
  37
  38 #define buffer_need_bytes(buffer, needed_free_size) do { if(unlikely((buffer)->size - (buffer)->len < (size_t)(needed_free_size))) buffer_increase((buffer), (size_t)(needed_free_size)); } while(0)
  39
  40 #define buffer_flush(wb) wb->buffer[wb->len = 0] = '\0'
  41 extern void buffer_reset(BUFFER *wb);
  42
  43 extern void buffer_strcat(BUFFER *wb, const char *txt);
  44 extern void buffer_rrd_value(BUFFER *wb, calculated_number value);
  45
  46 extern void buffer_date(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
  47 extern void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
  48
  49 extern BUFFER *buffer_create(long size);
  50 extern void buffer_free(BUFFER *b);
  51 extern void buffer_increase(BUFFER *b, size_t free_size_required);
  52
  53 extern void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...);
  54 extern void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args);
  55 extern void buffer_sprintf(BUFFER *wb, const char *fmt, ...);
  56
  57 extern void buffer_char_replace(BUFFER *wb, char from, char to);
  58
  59 #endif /* NETDATA_WEB_BUFFER_H */