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26a944cf29
Since the existing bit number argument can't exceed INT32_MAX, it's not possible for these functions to manipulate bits beyond the first 256MB of a bytea value. Lift that restriction by redeclaring the bit number arguments as int8 (which requires a catversion bump, hence is not back-patchable). The similarly-named functions for bit/varbit don't really have a problem because we restrict those types to at most VARBITMAXLEN bits; hence leave them alone. While here, extend the encode/decode functions in utils/adt/encode.c to allow dealing with values wider than 1GB. This is not a live bug or restriction in current usage, because no input could be more than 1GB, and since none of the encoders can expand a string more than 4X, the result size couldn't overflow uint32. But it might be desirable to support more in future, so make the input length values size_t and the potential-output-length values uint64. Also add some test cases to improve the miserable code coverage of these functions. Movead Li, editorialized some by me; also reviewed by Ashutosh Bapat Discussion: https://postgr.es/m/20200312115135445367128@highgo.ca
128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* builtins.h
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* Declarations for operations on built-in types.
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*
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*
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* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/utils/builtins.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef BUILTINS_H
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#define BUILTINS_H
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#include "fmgr.h"
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#include "nodes/nodes.h"
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#include "utils/fmgrprotos.h"
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/* Sign + the most decimal digits an 8-byte number could have */
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#define MAXINT8LEN 20
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/* bool.c */
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extern bool parse_bool(const char *value, bool *result);
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extern bool parse_bool_with_len(const char *value, size_t len, bool *result);
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/* domains.c */
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extern void domain_check(Datum value, bool isnull, Oid domainType,
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void **extra, MemoryContext mcxt);
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extern int errdatatype(Oid datatypeOid);
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extern int errdomainconstraint(Oid datatypeOid, const char *conname);
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/* encode.c */
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extern uint64 hex_encode(const char *src, size_t len, char *dst);
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extern uint64 hex_decode(const char *src, size_t len, char *dst);
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/* int.c */
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extern int2vector *buildint2vector(const int16 *int2s, int n);
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/* name.c */
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extern int namecpy(Name n1, const NameData *n2);
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extern int namestrcpy(Name name, const char *str);
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extern int namestrcmp(Name name, const char *str);
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/* numutils.c */
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extern int32 pg_atoi(const char *s, int size, int c);
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extern int16 pg_strtoint16(const char *s);
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extern int32 pg_strtoint32(const char *s);
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extern void pg_itoa(int16 i, char *a);
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int pg_ultoa_n(uint32 l, char *a);
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int pg_ulltoa_n(uint64 l, char *a);
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extern void pg_ltoa(int32 l, char *a);
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extern void pg_lltoa(int64 ll, char *a);
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extern char *pg_ultostr_zeropad(char *str, uint32 value, int32 minwidth);
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extern char *pg_ultostr(char *str, uint32 value);
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extern uint64 pg_strtouint64(const char *str, char **endptr, int base);
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/* oid.c */
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extern oidvector *buildoidvector(const Oid *oids, int n);
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extern Oid oidparse(Node *node);
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extern int oid_cmp(const void *p1, const void *p2);
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/* regexp.c */
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extern char *regexp_fixed_prefix(text *text_re, bool case_insensitive,
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Oid collation, bool *exact);
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/* ruleutils.c */
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extern bool quote_all_identifiers;
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extern const char *quote_identifier(const char *ident);
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extern char *quote_qualified_identifier(const char *qualifier,
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const char *ident);
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extern void generate_operator_clause(fmStringInfo buf,
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const char *leftop, Oid leftoptype,
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Oid opoid,
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const char *rightop, Oid rightoptype);
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/* varchar.c */
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extern int bpchartruelen(char *s, int len);
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/* popular functions from varlena.c */
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extern text *cstring_to_text(const char *s);
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extern text *cstring_to_text_with_len(const char *s, int len);
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extern char *text_to_cstring(const text *t);
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extern void text_to_cstring_buffer(const text *src, char *dst, size_t dst_len);
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#define CStringGetTextDatum(s) PointerGetDatum(cstring_to_text(s))
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#define TextDatumGetCString(d) text_to_cstring((text *) DatumGetPointer(d))
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/* xid.c */
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extern int xidComparator(const void *arg1, const void *arg2);
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/* inet_cidr_ntop.c */
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extern char *pg_inet_cidr_ntop(int af, const void *src, int bits,
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char *dst, size_t size);
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/* inet_net_pton.c */
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extern int pg_inet_net_pton(int af, const char *src,
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void *dst, size_t size);
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/* network.c */
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extern double convert_network_to_scalar(Datum value, Oid typid, bool *failure);
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extern Datum network_scan_first(Datum in);
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extern Datum network_scan_last(Datum in);
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extern void clean_ipv6_addr(int addr_family, char *addr);
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/* numeric.c */
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extern Datum numeric_float8_no_overflow(PG_FUNCTION_ARGS);
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/* format_type.c */
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/* Control flags for format_type_extended */
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#define FORMAT_TYPE_TYPEMOD_GIVEN 0x01 /* typemod defined by caller */
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#define FORMAT_TYPE_ALLOW_INVALID 0x02 /* allow invalid types */
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#define FORMAT_TYPE_FORCE_QUALIFY 0x04 /* force qualification of type */
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extern char *format_type_extended(Oid type_oid, int32 typemod, bits16 flags);
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extern char *format_type_be(Oid type_oid);
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extern char *format_type_be_qualified(Oid type_oid);
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extern char *format_type_with_typemod(Oid type_oid, int32 typemod);
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extern int32 type_maximum_size(Oid type_oid, int32 typemod);
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/* quote.c */
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extern char *quote_literal_cstr(const char *rawstr);
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#endif /* BUILTINS_H */
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