ecpglib_extern.h

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/* src/interfaces/ecpg/ecpglib/ecpglib_extern.h */
 
#ifndef _ECPG_ECPGLIB_EXTERN_H
#define _ECPG_ECPGLIB_EXTERN_H
 
#include "ecpg_config.h"
#include "ecpgtype.h"
#include "libpq-fe.h"
#include "sqlca.h"
#include "sqlda-compat.h"
#include "sqlda-native.h"
 
#ifndef CHAR_BIT
#include <limits.h>
#endif
 
enum COMPAT_MODE
{
    ECPG_COMPAT_PGSQL = 0, ECPG_COMPAT_INFORMIX, ECPG_COMPAT_INFORMIX_SE, ECPG_COMPAT_ORACLE
};
 
extern bool ecpg_internal_regression_mode;
 
#define INFORMIX_MODE(X) ((X) == ECPG_COMPAT_INFORMIX || (X) == ECPG_COMPAT_INFORMIX_SE)
#define ORACLE_MODE(X) ((X) == ECPG_COMPAT_ORACLE)
 
enum ARRAY_TYPE
{
    ECPG_ARRAY_ERROR, ECPG_ARRAY_NOT_SET, ECPG_ARRAY_ARRAY, ECPG_ARRAY_VECTOR, ECPG_ARRAY_NONE
};
 
#define ECPG_IS_ARRAY(X) ((X) == ECPG_ARRAY_ARRAY || (X) == ECPG_ARRAY_VECTOR)
 
/* A generic varchar type. */
struct ECPGgeneric_varchar
{
    int         len;
    char        arr[FLEXIBLE_ARRAY_MEMBER];
};
 
/* A generic bytea type. */
struct ECPGgeneric_bytea
{
    int         len;
    char        arr[FLEXIBLE_ARRAY_MEMBER];
};
 
/*
 * type information cache
 */
 
struct ECPGtype_information_cache
{
    struct ECPGtype_information_cache *next;
    int         oid;
    enum ARRAY_TYPE isarray;
};
 
#ifdef HAVE_USELOCALE
extern locale_t ecpg_clocale;   /* LC_NUMERIC=C */
#endif
 
/* structure to store one statement */
struct statement
{
    int         lineno;
    char       *command;
    char       *name;
    struct connection *connection;
    enum COMPAT_MODE compat;
    bool        force_indicator;
    enum ECPG_statement_type statement_type;
    bool        questionmarks;
    struct variable *inlist;
    struct variable *outlist;
#ifdef HAVE_USELOCALE
    locale_t    oldlocale;
#else
    char       *oldlocale;
#ifdef WIN32
    int         oldthreadlocale;
#endif
#endif
    int         nparams;
    char      **paramvalues;
    int        *paramlengths;
    int        *paramformats;
    PGresult   *results;
};
 
/* structure to store prepared statements for a connection */
struct prepared_statement
{
    char       *name;
    bool        prepared;
    struct statement *stmt;
    struct prepared_statement *next;
};
 
/* structure to store connections */
struct connection
{
    char       *name;
    PGconn     *connection;
    bool        autocommit;
    struct ECPGtype_information_cache *cache_head;
    struct prepared_statement *prep_stmts;
    struct connection *next;
};
 
/* structure to store descriptors */
struct descriptor
{
    char       *name;
    PGresult   *result;
    struct descriptor *next;
    int         count;
    struct descriptor_item *items;
};
 
struct descriptor_item
{
    int         num;
    char       *data;
    int         indicator;
    int         length;
    int         precision;
    int         scale;
    int         type;
    bool        is_binary;
    int         data_len;
    struct descriptor_item *next;
};
 
struct variable
{
    enum ECPGttype type;
    void       *value;
    void       *pointer;
    long        varcharsize;
    long        arrsize;
    long        offset;
    enum ECPGttype ind_type;
    void       *ind_value;
    void       *ind_pointer;
    long        ind_varcharsize;
    long        ind_arrsize;
    long        ind_offset;
    struct variable *next;
};
 
struct var_list
{
    int         number;
    void       *pointer;
    struct var_list *next;
};
 
extern struct var_list *ivlist;
 
/* Here are some methods used by the lib. */
 
bool        ecpg_add_mem(void *ptr, int lineno);
 
bool        ecpg_get_data(const PGresult *, int, int, int, enum ECPGttype type,
                          enum ECPGttype, char *, char *, long, long, long,
                          enum ARRAY_TYPE, enum COMPAT_MODE, bool);
 
void        ecpg_pthreads_init(void);
struct connection *ecpg_get_connection(const char *connection_name);
char       *ecpg_alloc(long size, int lineno);
char       *ecpg_auto_alloc(long size, int lineno);
char       *ecpg_realloc(void *ptr, long size, int lineno);
void        ecpg_free(void *ptr);
bool        ecpg_init(const struct connection *con,
                      const char *connection_name,
                      const int lineno);
char       *ecpg_strdup(const char *string, int lineno);
const char *ecpg_type_name(enum ECPGttype typ);
int         ecpg_dynamic_type(Oid type);
int         sqlda_dynamic_type(Oid type, enum COMPAT_MODE compat);
void        ecpg_clear_auto_mem(void);
 
struct descriptor *ecpg_find_desc(int line, const char *name);
 
struct prepared_statement *ecpg_find_prepared_statement(const char *name,
                                                        struct connection *con,
                                                        struct prepared_statement **prev_);
 
bool        ecpg_store_result(const PGresult *results, int act_field,
                              const struct statement *stmt, struct variable *var);
bool        ecpg_store_input(const int lineno, const bool force_indicator,
                             const struct variable *var,
                             char **tobeinserted_p, bool quote);
void        ecpg_free_params(struct statement *stmt, bool print);
bool        ecpg_do_prologue(int lineno, const int compat,
                             const int force_indicator, const char *connection_name,
                             const bool questionmarks, enum ECPG_statement_type statement_type,
                             const char *query, va_list args,
                             struct statement **stmt_out);
bool        ecpg_build_params(struct statement *stmt);
bool        ecpg_autostart_transaction(struct statement *stmt);
bool        ecpg_execute(struct statement *stmt);
bool        ecpg_process_output(struct statement *stmt, bool clear_result);
void        ecpg_do_epilogue(struct statement *stmt);
bool        ecpg_do(const int lineno, const int compat,
                    const int force_indicator, const char *connection_name,
                    const bool questionmarks, const int st, const char *query,
                    va_list args);
 
bool        ecpg_check_PQresult(PGresult *results, int lineno,
                                PGconn *connection, enum COMPAT_MODE compat);
void        ecpg_raise(int line, int code, const char *sqlstate, const char *str);
void        ecpg_raise_backend(int line, PGresult *result, PGconn *conn, int compat);
char       *ecpg_prepared(const char *name, struct connection *con);
bool        ecpg_deallocate_all_conn(int lineno, enum COMPAT_MODE c, struct connection *con);
void        ecpg_log(const char *format,...) pg_attribute_printf(1, 2);
bool        ecpg_auto_prepare(int lineno, const char *connection_name,
                              const int compat, char **name, const char *query);
bool        ecpg_register_prepared_stmt(struct statement *stmt);
void        ecpg_init_sqlca(struct sqlca_t *sqlca);
 
struct sqlda_compat *ecpg_build_compat_sqlda(int line, PGresult *res, int row,
                                             enum COMPAT_MODE compat);
void        ecpg_set_compat_sqlda(int lineno, struct sqlda_compat **_sqlda,
                                  const PGresult *res, int row,
                                  enum COMPAT_MODE compat);
struct sqlda_struct *ecpg_build_native_sqlda(int line, PGresult *res, int row,
                                             enum COMPAT_MODE compat);
void        ecpg_set_native_sqlda(int lineno, struct sqlda_struct **_sqlda,
                                  const PGresult *res, int row, enum COMPAT_MODE compat);
unsigned    ecpg_hex_dec_len(unsigned srclen);
unsigned    ecpg_hex_enc_len(unsigned srclen);
unsigned    ecpg_hex_encode(const char *src, unsigned len, char *dst);
 
#ifdef ENABLE_NLS
extern char *ecpg_gettext(const char *msgid) pg_attribute_format_arg(1);
#else
#define ecpg_gettext(x) (x)
#endif
 
/* SQLSTATE values generated or processed by ecpglib (intentionally
 * not exported -- users should refer to the codes directly) */
 
#define ECPG_SQLSTATE_NO_DATA               "02000"
#define ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_PARAMETERS    "07001"
#define ECPG_SQLSTATE_USING_CLAUSE_DOES_NOT_MATCH_TARGETS       "07002"
#define ECPG_SQLSTATE_RESTRICTED_DATA_TYPE_ATTRIBUTE_VIOLATION  "07006"
#define ECPG_SQLSTATE_INVALID_DESCRIPTOR_INDEX      "07009"
#define ECPG_SQLSTATE_SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION   "08001"
#define ECPG_SQLSTATE_CONNECTION_DOES_NOT_EXIST     "08003"
#define ECPG_SQLSTATE_TRANSACTION_RESOLUTION_UNKNOWN    "08007"
#define ECPG_SQLSTATE_CARDINALITY_VIOLATION "21000"
#define ECPG_SQLSTATE_NULL_VALUE_NO_INDICATOR_PARAMETER "22002"
#define ECPG_SQLSTATE_ACTIVE_SQL_TRANSACTION        "25001"
#define ECPG_SQLSTATE_NO_ACTIVE_SQL_TRANSACTION     "25P01"
#define ECPG_SQLSTATE_INVALID_SQL_STATEMENT_NAME    "26000"
#define ECPG_SQLSTATE_INVALID_SQL_DESCRIPTOR_NAME   "33000"
#define ECPG_SQLSTATE_INVALID_CURSOR_NAME   "34000"
#define ECPG_SQLSTATE_SYNTAX_ERROR          "42601"
#define ECPG_SQLSTATE_DATATYPE_MISMATCH     "42804"
#define ECPG_SQLSTATE_DUPLICATE_CURSOR      "42P03"
 
/* implementation-defined internal errors of ecpg */
#define ECPG_SQLSTATE_ECPG_INTERNAL_ERROR   "YE000"
#define ECPG_SQLSTATE_ECPG_OUT_OF_MEMORY    "YE001"
 
#endif                          /* _ECPG_ECPGLIB_EXTERN_H */