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/* common.h */
/*
* Copyright (C) Reuben Thomas 2000-2020
* Copyright (C) Shmuel Zeigerman 2004-2020
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the
* Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the
* Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
* KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
* OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef COMMON_H
#define COMMON_H
#include "lua.h"
#if LUA_VERSION_NUM > 501
# define lua_objlen lua_rawlen
int luaL_typerror (lua_State *L, int narg, const char *tname);
#endif
/* REX_API can be overridden from the command line or Makefile */
#ifndef REX_API
# define REX_API LUALIB_API
#endif
/* Special values for maxmatch in gsub. They all must be negative. */
#define GSUB_UNLIMITED -1
#define GSUB_CONDITIONAL -2
/* Common structs and functions */
typedef struct {
const char* key;
int val;
} flag_pair;
typedef struct { /* compile arguments */
const char * pattern;
size_t patlen;
void * ud;
int cflags;
const char * locale; /* PCRE, Oniguruma */
const unsigned char * tables; /* PCRE */
int tablespos; /* PCRE */
void * syntax; /* Oniguruma */
const unsigned char * translate; /* GNU */
int gnusyn; /* GNU */
} TArgComp;
typedef struct { /* exec arguments */
const char * text;
size_t textlen;
int startoffset;
int eflags;
int funcpos;
int maxmatch;
int funcpos2; /* used with gsub */
int reptype; /* used with gsub */
size_t ovecsize; /* PCRE: dfa_exec */
size_t wscount; /* PCRE: dfa_exec */
} TArgExec;
struct tagFreeList; /* forward declaration */
struct tagBuffer {
size_t size;
size_t top;
char * arr;
lua_State * L;
struct tagFreeList * freelist;
};
struct tagFreeList {
struct tagBuffer * list[16];
int top;
};
typedef struct tagBuffer TBuffer;
typedef struct tagFreeList TFreeList;
void freelist_init (TFreeList *fl);
void freelist_add (TFreeList *fl, TBuffer *buf);
void freelist_free (TFreeList *fl);
void buffer_init (TBuffer *buf, size_t sz, lua_State *L, TFreeList *fl);
void buffer_free (TBuffer *buf);
void buffer_clear (TBuffer *buf);
void buffer_addbuffer (TBuffer *trg, TBuffer *src);
void buffer_addlstring (TBuffer *buf, const void *src, size_t sz);
void buffer_addvalue (TBuffer *buf, int stackpos);
void buffer_pushresult (TBuffer *buf);
void bufferZ_putrepstring (TBuffer *buf, int reppos, int nsub);
int bufferZ_next (TBuffer *buf, size_t *iter, size_t *len, const char **str);
void bufferZ_addlstring (TBuffer *buf, const void *src, size_t len);
void bufferZ_addnum (TBuffer *buf, size_t num);
int get_int_field (lua_State *L, const char* field);
void set_int_field (lua_State *L, const char* field, int val);
int get_flags (lua_State *L, const flag_pair **arr);
const char *get_flag_key (const flag_pair *fp, int val);
void *Lmalloc (lua_State *L, size_t size);
void *Lrealloc (lua_State *L, void *p, size_t osize, size_t nsize);
void Lfree (lua_State *L, void *p, size_t size);
#ifndef REX_NOEMBEDDEDTEST
int newmembuffer (lua_State *L);
#endif
#endif
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