ngx_http_websocket_stat_format.h

#ifndef _NGX_HTTP_WEBSOCKET_FMT
#define _NGX_HTTP_WEBSOCKET_FMT

#ifdef TEST

#define ngx_http_request_t void
#define ngx_pool_t void
#define ngx_palloc(pool, size) malloc(size)

typedef struct {
    size_t nelts;
    void *elts;
    size_t el_size;
} ngx_array_t;

#else

#include <ngx_core.h>
#include <ngx_http.h>

#endif

// typedef const char (*template_op)(ngx_http_request_t *r);

typedef const char *(*template_op)(ngx_http_request_t *r, void *data);

typedef struct {
    char *name;
    size_t name_len;
    size_t len;
    template_op operation;
} template_variable;

#define VAR_NAME(name) name, sizeof(name) - 1

typedef struct {
    ngx_array_t *variable_occurances;
    char *compiled_template_str;
    size_t max_result_len;
    const template_variable *variables;
    char *template;
    ngx_pool_t *pool;
} compiled_template;

// Public functions
compiled_template *compile_template(char *template,
                                    const template_variable *variables,
                                    ngx_pool_t *pool);
char *apply_template(compiled_template *template_cmpl, ngx_http_request_t *r,
                     void *data);
#endif