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/*
* Copyright (C) Xiaozhe Wang (chaoslawful)
* Copyright (C) Yichun Zhang (agentzh)
*/
#ifndef _NGX_HTTP_LUA_OUTPUT_H_INCLUDED_
#define _NGX_HTTP_LUA_OUTPUT_H_INCLUDED_
#include "ngx_http_lua_common.h"
void ngx_http_lua_inject_output_api(lua_State *L);
size_t ngx_http_lua_calc_strlen_in_table(lua_State *L, int index, int arg_i,
unsigned strict);
u_char *ngx_http_lua_copy_str_in_table(lua_State *L, int index, u_char *dst);
ngx_int_t ngx_http_lua_flush_resume_helper(ngx_http_request_t *r,
ngx_http_lua_ctx_t *ctx);
/* Get the maximum possible length, not the actual length */
static ngx_inline size_t
ngx_http_lua_get_num_len(lua_State *L, int idx)
{
double num;
num = (double) lua_tonumber(L, idx);
if (num == (double) (int32_t) num) {
return NGX_INT32_LEN;
}
return NGX_DOUBLE_LEN;
}
static ngx_inline u_char *
ngx_http_lua_write_num(lua_State *L, int idx, u_char *dst)
{
double num;
int n;
num = (double) lua_tonumber(L, idx);
/*
* luajit format number with only 14 significant digits.
* To be consistent with lujit, don't use (double) (long) below
* or integer greater than 99,999,999,999,999 will different from luajit.
*/
if (num == (double) (int32_t) num) {
dst = ngx_snprintf(dst, NGX_INT64_LEN, "%D", (int32_t) num);
} else {
/*
* The maximum number of significant digits is 14 in lua.
* Please refer to lj_strfmt.c for more details.
*/
n = snprintf((char *) dst, NGX_DOUBLE_LEN, "%.14g", num);
if (n < 0) {
ngx_log_error(NGX_LOG_ERR, ngx_cycle->log, ngx_errno,
"snprintf(\"%f\") failed");
} else {
dst += n;
}
}
return dst;
}
#endif /* _NGX_HTTP_LUA_OUTPUT_H_INCLUDED_ */
/* vi:set ft=c ts=4 sw=4 et fdm=marker: */
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