88 lines
3.7 KiB
C
88 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-3.0-or-later
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#ifndef NETDATA_WEB_BUFFER_H
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#define NETDATA_WEB_BUFFER_H 1
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#include "../libnetdata.h"
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#define WEB_DATA_LENGTH_INCREASE_STEP 1024
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typedef struct web_buffer {
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size_t size; // allocation size of buffer, in bytes
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size_t len; // current data length in buffer, in bytes
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char *buffer; // the buffer itself
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uint8_t contenttype; // the content type of the data in the buffer
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uint8_t options; // options related to the content
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time_t date; // the timestamp this content has been generated
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time_t expires; // the timestamp this content expires
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} BUFFER;
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// options
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#define WB_CONTENT_CACHEABLE 1
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#define WB_CONTENT_NO_CACHEABLE 2
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// content-types
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#define CT_APPLICATION_JSON 1
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#define CT_TEXT_PLAIN 2
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#define CT_TEXT_HTML 3
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#define CT_APPLICATION_X_JAVASCRIPT 4
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#define CT_TEXT_CSS 5
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#define CT_TEXT_XML 6
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#define CT_APPLICATION_XML 7
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#define CT_TEXT_XSL 8
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#define CT_APPLICATION_OCTET_STREAM 9
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#define CT_APPLICATION_X_FONT_TRUETYPE 10
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#define CT_APPLICATION_X_FONT_OPENTYPE 11
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#define CT_APPLICATION_FONT_WOFF 12
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#define CT_APPLICATION_FONT_WOFF2 13
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#define CT_APPLICATION_VND_MS_FONTOBJ 14
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#define CT_IMAGE_SVG_XML 15
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#define CT_IMAGE_PNG 16
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#define CT_IMAGE_JPG 17
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#define CT_IMAGE_GIF 18
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#define CT_IMAGE_XICON 19
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#define CT_IMAGE_ICNS 20
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#define CT_IMAGE_BMP 21
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#define CT_PROMETHEUS 22
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#define buffer_cacheable(wb) do { (wb)->options |= WB_CONTENT_CACHEABLE; if((wb)->options & WB_CONTENT_NO_CACHEABLE) (wb)->options &= ~WB_CONTENT_NO_CACHEABLE; } while(0)
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#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)
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#define buffer_strlen(wb) ((wb)->len)
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extern const char *buffer_tostring(BUFFER *wb);
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#define buffer_flush(wb) wb->buffer[(wb)->len = 0] = '\0'
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extern void buffer_reset(BUFFER *wb);
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extern void buffer_strcat(BUFFER *wb, const char *txt);
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extern void buffer_fast_strcat(BUFFER *wb, const char *txt, size_t len);
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extern void buffer_rrd_value(BUFFER *wb, NETDATA_DOUBLE value);
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extern void buffer_date(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
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extern void buffer_jsdate(BUFFER *wb, int year, int month, int day, int hours, int minutes, int seconds);
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extern BUFFER *buffer_create(size_t size);
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extern void buffer_free(BUFFER *b);
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extern void buffer_increase(BUFFER *b, size_t free_size_required);
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extern void buffer_snprintf(BUFFER *wb, size_t len, const char *fmt, ...) PRINTFLIKE(3, 4);
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extern void buffer_vsprintf(BUFFER *wb, const char *fmt, va_list args);
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extern void buffer_sprintf(BUFFER *wb, const char *fmt, ...) PRINTFLIKE(2,3);
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extern void buffer_strcat_jsonescape(BUFFER *wb, const char *txt);
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extern void buffer_strcat_htmlescape(BUFFER *wb, const char *txt);
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extern void buffer_char_replace(BUFFER *wb, char from, char to);
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extern char *print_number_lu_r(char *str, unsigned long uvalue);
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extern char *print_number_llu_r(char *str, unsigned long long uvalue);
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extern char *print_number_llu_r_smart(char *str, unsigned long long uvalue);
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extern void buffer_print_llu(BUFFER *wb, unsigned long long uvalue);
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static inline void buffer_need_bytes(BUFFER *buffer, size_t needed_free_size) {
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if(unlikely(buffer->size - buffer->len < needed_free_size))
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buffer_increase(buffer, needed_free_size);
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}
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#endif /* NETDATA_WEB_BUFFER_H */
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