#include "postgres.h"
#include "utils/memutils.h"
#include "lib/stringinfo.h"

Include dependency graph for stringinfo.c:

Functions
StringInfo	makeStringInfo (void)

void	initStringInfo (StringInfo str)

void	resetStringInfo (StringInfo str)

void	appendStringInfo (StringInfo str, const char *fmt,...)

int	appendStringInfoVA (StringInfo str, const char *fmt, va_list args)

void	appendStringInfoString (StringInfo str, const char *s)

void	appendStringInfoChar (StringInfo str, char ch)

void	appendStringInfoSpaces (StringInfo str, int count)

void	appendBinaryStringInfo (StringInfo str, const char *data, int datalen)

void	appendBinaryStringInfoNT (StringInfo str, const char *data, int datalen)

void	enlargeStringInfo (StringInfo str, int needed)

Function Documentation

◆ appendBinaryStringInfo()

void appendBinaryStringInfo	(	StringInfo	str,
		const char *	data,
		int	datalen
	)

Definition at line 227 of file stringinfo.c.

References Assert, StringInfoData::data, enlargeStringInfo(), and StringInfoData::len.

Referenced by add_indent(), appendStringInfoRegexpSubstr(), appendStringInfoString(), appendStringInfoText(), auth_peer(), buf_add_txid(), buf_init(), bytea_string_agg_transfn(), config_enum_get_options(), CopyReadLine(), CopyReadLineText(), CopySendData(), CopySendString(), database_to_xml_internal(), DeadLockReport(), deparseFromExprForRel(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), flattenJsonPathParseItem(), get_from_clause(), get_target_list(), GetOldFunctionMessage(), HandleParallelMessages(), hstore_to_json(), hstore_to_json_loose(), hstore_to_jsonb_loose(), int8_avg_deserialize(), json_lex_string(), jsonb_put_escaped_value(), JsonbToCStringWorker(), jsonPathToCstring(), log_line_prefix(), map_sql_identifier_to_xml_name(), map_xml_name_to_sql_identifier(), numeric_avg_deserialize(), numeric_deserialize(), numeric_poly_deserialize(), parse_fcall_arguments(), parse_fcall_arguments_20(), pg_decode_message(), pg_get_functiondef(), plpgsql_append_source_text(), pq_getstring(), pq_sendbytes(), pq_sendtext(), print_function_rettype(), printJsonPathItem(), process_pipe_input(), range_recv(), replace_text(), replace_text_regexp(), reserveSpaceForItemPointer(), RI_FKey_cascade_upd(), ri_set(), schema_to_xml_internal(), unaccent_lexize(), write_csvlog(), XLogInsertRecord(), XLogWalRcvProcessMsg(), xml_is_document(), xml_send(), and xmlconcat().

 {
     Assert(str != NULL);
 
     /* Make more room if needed */
     enlargeStringInfo(str, datalen);
 
     /* OK, append the data */
     memcpy(str->data + str->len, data, datalen);
     str->len += datalen;
 
     /*
      * Keep a trailing null in place, even though it's probably useless for
      * binary data.  (Some callers are dealing with text but call this because
      * their input isn't null-terminated.)
      */
     str->data[str->len] = '\0';
 }

◆ appendBinaryStringInfoNT()

void appendBinaryStringInfoNT	(	StringInfo	str,
		const char *	data,
		int	datalen
	)

Definition at line 253 of file stringinfo.c.

References Assert, StringInfoData::data, enlargeStringInfo(), and StringInfoData::len.

Referenced by appendStringInfoStringQuoted(), pq_sendcountedtext(), and pq_sendstring().

 {
     Assert(str != NULL);
 
     /* Make more room if needed */
     enlargeStringInfo(str, datalen);
 
     /* OK, append the data */
     memcpy(str->data + str->len, data, datalen);
     str->len += datalen;
 }

◆ appendStringInfo()

void appendStringInfo	(	StringInfo	str,
		const char *	fmt,
			...
	)

Definition at line 91 of file stringinfo.c.

References appendStringInfoVA(), generate_unaccent_rules::args, and enlargeStringInfo().

Referenced by _outConstraint(), _outForeignKeyOptInfo(), _outList(), _outPathTarget(), _outValue(), add_cast_to(), AddFileToManifest(), appendFunctionName(), appendStringInfoStringQuoted(), array_to_text_internal(), auth_peer(), BackendInitialize(), bqarr_in(), brin_desc(), btree_desc(), build_tuplestore_recursively(), BuildIndexValueDescription(), BuildParamLogString(), checkSharedDependencies(), clog_desc(), commit_ts_desc(), copy_table(), create_cursor(), database_to_xml_internal(), datum_to_json(), dbase_desc(), dblink_close(), dblink_fdw_validator(), dblink_fetch(), dblink_open(), DeadLockReport(), decompile_column_index_array(), deparseAnalyzeSizeSql(), deparseArrayExpr(), deparseBoolExpr(), deparseColumnRef(), deparseConst(), deparseDirectDeleteSql(), deparseDirectUpdateSql(), deparseFromExprForRel(), deparseFuncExpr(), deparseInsertSql(), deparseLockingClause(), deparseOperatorName(), deparseRangeTblRef(), deparseRelabelType(), deparseRelation(), deparseScalarArrayOpExpr(), deparseSortGroupClause(), deparseUpdateSql(), deparseVar(), desc_recompress_leaf(), DescribeLockTag(), do_pg_start_backup(), DropSubscription(), escape_json(), ExecBuildSlotPartitionKeyDescription(), ExecEvalXmlExpr(), execute_extension_script(), ExplainIndexScanDetails(), ExplainNode(), ExplainOpenGroup(), ExplainOpenWorker(), ExplainPrintJIT(), ExplainPrintSettings(), ExplainProperty(), ExplainPropertyList(), ExplainTargetRel(), ExportSnapshot(), fetch_remote_table_info(), file_fdw_validator(), flatten_set_variable_args(), format_expr_params(), format_node_dump(), format_operator_internal(), format_preparedparamsdata(), format_procedure_internal(), FreePageManagerDump(), FreePageManagerDumpBtree(), FreePageManagerDumpSpans(), fsm_page_contents(), funcname_signature_string(), generate_operator_clause(), generate_operator_name(), generic_desc(), get_agg_expr(), get_coercion_expr(), get_connect_string(), get_const_collation(), get_const_expr(), get_delete_query_def(), get_from_clause_coldeflist(), get_from_clause_item(), get_func_expr(), get_insert_query_def(), get_opclass_name(), get_oper_expr(), get_parameter(), get_reloptions(), get_rule_expr(), get_rule_expr_funccall(), get_rule_orderby(), get_rule_sortgroupclause(), get_rule_windowclause(), get_select_query_def(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_sublink_expr(), get_tablefunc(), get_tablesample_def(), get_target_list(), get_tuple_of_interest(), get_update_query_def(), get_utility_query_def(), get_variable(), get_windowfunc_expr(), getObjectDescription(), getObjectIdentityParts(), getOpFamilyDescription(), getOpFamilyIdentity(), getRelationDescription(), gin_desc(), hash_desc(), heap2_desc(), heap_desc(), heap_vacuum_rel(), incompatible_module_error(), initialize_worker_spi(), KnownAssignedXidsDisplay(), lazy_scan_heap(), libpqrcv_create_slot(), libpqrcv_startstreaming(), log_line_prefix(), logicalmsg_desc(), make_ruledef(), make_temptable_name_n(), map_multipart_sql_identifier_to_xml_name(), map_sql_catalog_to_xmlschema_types(), map_sql_identifier_to_xml_name(), map_sql_schema_to_xmlschema_types(), map_sql_table_to_xmlschema(), map_sql_type_to_xml_name(), map_sql_type_to_xmlschema_type(), map_sql_typecoll_to_xmlschema_types(), multixact_desc(), mxid_to_string(), op_signature_string(), out_gistxlogDelete(), out_gistxlogPageDelete(), out_gistxlogPageReuse(), out_gistxlogPageSplit(), out_member(), outBitmapset(), outDatum(), packArcInfoCmp(), pair_encode(), pg_decode_commit_txn(), pg_decode_message(), pg_dependencies_out(), pg_get_constraintdef_worker(), pg_get_functiondef(), pg_get_indexdef_worker(), pg_get_partkeydef_worker(), pg_get_statisticsobj_worker(), pg_get_triggerdef_worker(), pg_ndistinct_out(), pg_output_begin(), pgp_armor_encode(), PLy_traceback(), populate_array_report_expected_array(), postgres_fdw_validator(), postgresAcquireSampleRowsFunc(), postgresExplainForeignScan(), postgresImportForeignSchema(), postgresql_fdw_validator(), pretty_format_node_dump(), print_function_arguments(), print_function_trftypes(), print_literal(), printJsonPathItem(), printRemoteParam(), printRemotePlaceholder(), processIndirection(), ProcSleep(), query_to_xml_internal(), quote_object_name(), quote_qualified_identifier(), refresh_by_match_merge(), relmap_desc(), replorigin_desc(), report_triggers(), reportDependentObjects(), ri_Check_Pk_Match(), RI_FKey_cascade_del(), RI_FKey_cascade_upd(), RI_FKey_check(), ri_GenerateQual(), ri_GenerateQualCollation(), RI_Initial_Check(), RI_PartitionRemove_Check(), ri_restrict(), ri_set(), schema_get_xml_visible_tables(), schema_to_xml_internal(), send_message_to_frontend(), send_message_to_server_log(), sepgsql_attribute_post_create(), sepgsql_audit_log(), sepgsql_proc_post_create(), sepgsql_relation_post_create(), sepgsql_schema_post_create(), seq_desc(), serialize_deflist(), set_backtrace(), show_buffer_usage(), show_hash_info(), show_sort_info(), show_sortorder_options(), show_tablesample(), show_tidbitmap_info(), ShowTransactionStateRec(), ShowUsage(), smgr_desc(), spg_desc(), SPI_sql_row_to_xmlelement(), standby_desc(), standby_desc_invalidations(), standby_desc_running_xacts(), StartupXLOG(), storeObjectDescription(), table_to_xml_internal(), tblspc_desc(), txid_snapshot_out(), typeStringToTypeName(), write_csvlog(), xact_desc(), xact_desc_abort(), xact_desc_assignment(), xact_desc_commit(), xact_desc_prepare(), xact_desc_relations(), xact_desc_subxacts(), xlog_desc(), xlog_outdesc(), xlog_redo(), XLogInsertRecord(), xml_is_document(), xmldata_root_element_end(), xmldata_root_element_start(), xmlpi(), xpath_table(), and xsd_schema_element_start().

 {
     int         save_errno = errno;
 
     for (;;)
     {
         va_list     args;
         int         needed;
 
         /* Try to format the data. */
         errno = save_errno;
         va_start(args, fmt);
         needed = appendStringInfoVA(str, fmt, args);
         va_end(args);
 
         if (needed == 0)
             break;              /* success */
 
         /* Increase the buffer size and try again. */
         enlargeStringInfo(str, needed);
     }
 }

◆ appendStringInfoChar()

void appendStringInfoChar	(	StringInfo	str,
		char	ch
	)

Definition at line 188 of file stringinfo.c.

References StringInfoData::data, enlargeStringInfo(), StringInfoData::len, and StringInfoData::maxlen.

Referenced by _outAExpr(), _outList(), _outValue(), appendConditions(), appendContextKeyword(), appendStringInfoRegexpSubstr(), appendTypeNameToBuffer(), array_dim_to_json(), auth_peer(), brin_page_items(), BuildIndexValueDescription(), BuildRestoreCommand(), CheckSCRAMAuth(), circle_out(), composite_to_json(), cube_out(), cursor_to_xml(), database_to_xml_internal(), DeadLockReport(), deparseAggref(), deparseArrayExpr(), deparseBoolExpr(), deparseColumnRef(), deparseDistinctExpr(), deparseFromExprForRel(), deparseFuncExpr(), deparseInsertSql(), deparseNullTest(), deparseOpExpr(), deparseRangeTblRef(), deparseScalarArrayOpExpr(), deparseSortGroupClause(), deparseStringLiteral(), deparseSubscriptingRef(), do_pg_start_backup(), escape_param_str(), exec_stmt_raise(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), ExplainBeginOutput(), ExplainCloseGroup(), ExplainJSONLineEnding(), ExplainNode(), ExplainOpenGroup(), ExplainProperty(), ExplainPropertyList(), ExplainPropertyListNested(), ExplainSeparatePlans(), ExplainXMLTag(), ExplainYAMLLineStarting(), fetch_table_list(), flattenJsonPathParseItem(), format_procedure_internal(), FreePageManagerDumpBtree(), FreePageManagerDumpSpans(), funcname_signature_string(), generate_operator_name(), get_agg_expr(), get_basic_select_query(), get_coercion_expr(), get_column_alias_list(), get_delete_query_def(), get_from_clause_coldeflist(), get_from_clause_item(), get_func_expr(), get_insert_query_def(), get_oper_expr(), get_parameter(), get_range_partbound_string(), get_rule_expr(), get_rule_expr_paren(), get_rule_groupingset(), get_rule_sortgroupclause(), get_rule_windowspec(), get_setop_query(), get_special_variable(), get_sql_insert(), get_sublink_expr(), get_tablefunc(), get_tablesample_def(), get_update_query_def(), get_update_query_targetlist_def(), get_values_def(), get_variable(), get_windowfunc_expr(), get_with_clause(), hstore_to_json(), hstore_to_json_loose(), incompatible_module_error(), InteractiveBackend(), json_agg_transfn(), json_build_array(), json_build_object(), json_lex_string(), json_object(), json_object_two_arg(), libpqrcv_startstreaming(), log_line_prefix(), make_ruledef(), make_viewdef(), merge_children(), mxid_to_string(), NameListToQuotedString(), NameListToString(), outBitmapset(), outDatum(), outNode(), outToken(), packArcInfoCmp(), path_encode(), pg_be_scram_get_mechanisms(), pg_decode_change(), pg_dependencies_out(), pg_get_constraintdef_worker(), pg_get_functiondef(), pg_get_indexdef_worker(), pg_get_partkeydef_worker(), pg_get_statisticsobj_worker(), pg_get_triggerdef_worker(), pg_ndistinct_out(), pg_split_opts(), pgp_armor_encode(), postgresExplainForeignScan(), postgresImportForeignSchema(), pq_send_ascii_string(), print_function_arguments(), print_function_rettype(), print_literal(), printJsonPathItem(), printSubscripts(), query_to_xml_internal(), range_bound_escape(), range_deparse(), range_parse_bound(), record_in(), record_out(), reportDependentObjects(), RI_Initial_Check(), RI_PartitionRemove_Check(), run_ssl_passphrase_command(), schema_to_xml_internal(), send_message_to_frontend(), send_message_to_server_log(), sepgsql_proc_post_create(), serialize_deflist(), show_buffer_usage(), show_modifytable_info(), show_tablesample(), show_tidbitmap_info(), simple_quote_literal(), SPI_sql_row_to_xmlelement(), storeObjectDescription(), stringlist_to_identifierstr(), tuple_to_stringinfo(), txid_snapshot_out(), TypeNameListToString(), uuid_out(), write_csvlog(), xlog_outdesc(), xml_is_document(), and xmlpi().

 {
     /* Make more room if needed */
     if (str->len + 1 >= str->maxlen)
         enlargeStringInfo(str, 1);
 
     /* OK, append the character */
     str->data[str->len] = ch;
     str->len++;
     str->data[str->len] = '\0';
 }

◆ appendStringInfoSpaces()

void appendStringInfoSpaces	(	StringInfo	str,
		int	count
	)

Definition at line 206 of file stringinfo.c.

References StringInfoData::data, enlargeStringInfo(), and StringInfoData::len.

Referenced by appendContextKeyword(), ExplainCloseGroup(), ExplainDummyGroup(), ExplainIndentText(), ExplainOpenGroup(), ExplainProperty(), ExplainPropertyList(), ExplainPropertyListNested(), ExplainXMLTag(), ExplainYAMLLineStarting(), flattenJsonPathParseItem(), jsonPathFromCstring(), log_line_prefix(), merge_children(), and text_format_append_string().

 {
     if (count > 0)
     {
         /* Make more room if needed */
         enlargeStringInfo(str, count);
 
         /* OK, append the spaces */
         while (--count >= 0)
             str->data[str->len++] = ' ';
         str->data[str->len] = '\0';
     }
 }

◆ appendStringInfoString()

void appendStringInfoString	(	StringInfo	str,
		const char *	s
	)

Definition at line 176 of file stringinfo.c.

References appendBinaryStringInfo().

Referenced by _outAConst(), _outAExpr(), _outBoolExpr(), _outConst(), _outConstraint(), _outCustomPath(), _outCustomScan(), _outForeignKeyOptInfo(), _outPathInfo(), _outPathTarget(), _outQuery(), _outValue(), AddFileToManifest(), appendAggOrderBy(), appendConditions(), appendContextKeyword(), appendFunctionName(), appendGroupByClause(), appendLimitClause(), appendOrderByClause(), appendTypeNameToBuffer(), array_dim_to_json(), array_to_json_internal(), array_to_text_internal(), auth_peer(), brin_page_items(), build_tuplestore_recursively(), BuildIndexValueDescription(), BuildParamLogString(), BuildRestoreCommand(), composite_to_json(), concat_internal(), config_enum_get_options(), copy_table(), cube_out(), database_to_xmlschema_internal(), datum_to_json(), decompile_column_index_array(), deparseAggref(), deparseAnalyzeSizeSql(), deparseAnalyzeSql(), deparseArrayExpr(), deparseBoolExpr(), deparseColumnRef(), deparseConst(), deparseDeleteSql(), deparseDirectDeleteSql(), deparseDirectUpdateSql(), deparseDistinctExpr(), deparseExplicitTargetList(), deparseFromExpr(), deparseFromExprForRel(), deparseFuncExpr(), deparseInsertSql(), deparseLockingClause(), deparseNullTest(), deparseOperatorName(), deparseRangeTblRef(), deparseSelectSql(), deparseSelectStmtForRel(), deparseSubqueryTargetList(), deparseTargetList(), deparseUpdateSql(), escape_json(), escape_xml(), estimate_path_cost_size(), exec_stmt_raise(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), execute_extension_script(), ExplainBeginOutput(), ExplainDummyGroup(), ExplainEndOutput(), ExplainFlushWorkersState(), ExplainIndexScanDetails(), ExplainNode(), ExplainOneUtility(), ExplainOpenGroup(), ExplainPrintJIT(), ExplainPrintSettings(), ExplainProperty(), ExplainPropertyList(), ExplainPropertyListNested(), ExplainQuery(), ExplainTargetRel(), ExplainXMLTag(), ExportSnapshot(), fetch_table_list(), flatten_set_variable_args(), format_expr_params(), format_operator_internal(), format_preparedparamsdata(), format_procedure_internal(), FreePageManagerDump(), funcname_signature_string(), generate_operator_clause(), generate_operator_name(), get_agg_expr(), get_basic_select_query(), get_column_alias_list(), get_const_expr(), get_from_clause(), get_from_clause_coldeflist(), get_from_clause_item(), get_func_expr(), get_insert_query_def(), get_query_def(), get_range_partbound_string(), get_reloptions(), get_rule_expr(), get_rule_expr_funccall(), get_rule_groupingset(), get_rule_orderby(), get_rule_windowclause(), get_rule_windowspec(), get_select_query_def(), get_setop_query(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_sublink_expr(), get_tablefunc(), get_tablesample_def(), get_target_list(), get_tuple_of_interest(), get_update_query_def(), get_update_query_targetlist_def(), get_utility_query_def(), get_values_def(), get_variable(), get_windowfunc_expr(), get_with_clause(), getConstraintTypeDescription(), getObjectIdentityParts(), getObjectTypeDescription(), getProcedureTypeDescription(), getRelationIdentity(), getRelationTypeDescription(), gin_desc(), heap_desc(), hstore_to_json(), hstore_to_json_loose(), incompatible_module_error(), json_agg_transfn(), json_build_array(), json_build_object(), json_lex_string(), json_object(), json_object_agg_transfn(), json_object_two_arg(), jsonb_put_escaped_value(), libpqrcv_create_slot(), libpqrcv_startstreaming(), log_line_prefix(), make_ruledef(), make_temptable_name_n(), map_multipart_sql_identifier_to_xml_name(), map_sql_catalog_to_xmlschema_types(), map_sql_identifier_to_xml_name(), map_sql_schema_to_xmlschema_types(), map_sql_table_to_xmlschema(), map_sql_type_to_xml_name(), map_sql_type_to_xmlschema_type(), map_sql_value_to_xml_value(), map_xml_name_to_sql_identifier(), NameListToQuotedString(), NameListToString(), op_signature_string(), out_infobits(), out_member(), outDatum(), outNode(), outToken(), packArcInfoCmp(), pg_be_scram_get_mechanisms(), pg_decode_change(), pg_decode_commit_txn(), pg_decode_truncate(), pg_dependencies_out(), pg_extension_update_paths(), pg_get_constraintdef_worker(), pg_get_functiondef(), pg_get_indexdef_worker(), pg_get_partkeydef_worker(), pg_get_statisticsobj_worker(), pg_get_triggerdef_worker(), pg_ndistinct_out(), pg_output_begin(), pgp_armor_encode(), PLy_traceback(), postgresImportForeignSchema(), print_function_arguments(), print_function_rettype(), print_function_trftypes(), print_literal(), printJsonPathItem(), quote_object_name(), quote_qualified_identifier(), range_deparse(), refresh_by_match_merge(), report_triggers(), ri_Check_Pk_Match(), RI_FKey_check(), RI_Initial_Check(), RI_PartitionRemove_Check(), ri_ReportViolation(), ri_restrict(), run_ssl_passphrase_command(), schema_to_xmlschema_internal(), send_message_to_frontend(), send_message_to_server_log(), sepgsql_audit_log(), sepgsql_database_post_create(), sepgsql_proc_post_create(), serialize_deflist(), set_backtrace(), show_buffer_usage(), show_modifytable_info(), show_sort_group_keys(), show_sortorder_options(), show_tablesample(), show_tidbitmap_info(), ShowUsage(), single_encode(), smgr_desc(), sn_scalar(), spg_desc(), SPI_sql_row_to_xmlelement(), standby_desc_invalidations(), standby_desc_running_xacts(), StartupXLOG(), stringlist_to_identifierstr(), text_format_append_string(), transform_string_values_scalar(), tuple_to_stringinfo(), write_auto_conf_file(), write_csvlog(), xact_desc_abort(), xact_desc_assignment(), xact_desc_commit(), xact_desc_prepare(), xact_desc_subxacts(), xlog_desc(), xlog_outdesc(), xlog_redo(), XLogInsertRecord(), xml_is_document(), xml_out_internal(), xmlcomment(), xmlconcat(), xmldata_root_element_start(), xmlpi(), xmlroot(), xsd_schema_element_end(), and xsd_schema_element_start().

 {
     appendBinaryStringInfo(str, s, strlen(s));
 }

◆ appendStringInfoVA()

int appendStringInfoVA	(	StringInfo	str,
		const char *	fmt,
		va_list	args
	)

Definition at line 133 of file stringinfo.c.

References Assert, StringInfoData::data, StringInfoData::len, StringInfoData::maxlen, and pvsnprintf().

Referenced by appendStringInfo(), and PLy_elog_impl().

 {
     int         avail;
     size_t      nprinted;
 
     Assert(str != NULL);
 
     /*
      * If there's hardly any space, don't bother trying, just fail to make the
      * caller enlarge the buffer first.  We have to guess at how much to
      * enlarge, since we're skipping the formatting work.
      */
     avail = str->maxlen - str->len;
     if (avail < 16)
         return 32;
 
     nprinted = pvsnprintf(str->data + str->len, (size_t) avail, fmt, args);
 
     if (nprinted < (size_t) avail)
     {
         /* Success.  Note nprinted does not include trailing null. */
         str->len += (int) nprinted;
         return 0;
     }
 
     /* Restore the trailing null so that str is unmodified. */
     str->data[str->len] = '\0';
 
     /*
      * Return pvsnprintf's estimate of the space needed.  (Although this is
      * given as a size_t, we know it will fit in int because it's not more
      * than MaxAllocSize.)
      */
     return (int) nprinted;
 }

◆ enlargeStringInfo()

void enlargeStringInfo	(	StringInfo	str,
		int	needed
	)

Definition at line 283 of file stringinfo.c.

References _, StringInfoData::data, elog, ereport, errcode(), errdetail(), errmsg(), ERROR, EXIT_FAILURE, fprintf, StringInfoData::len, MaxAllocSize, StringInfoData::maxlen, and repalloc().

Referenced by AddFileToManifest(), appendBinaryStringInfo(), appendBinaryStringInfoNT(), appendStringInfo(), appendStringInfoChar(), appendStringInfoSpaces(), CopyReadAttributesCSV(), CopyReadAttributesText(), CopyReadBinaryAttribute(), GetOldFunctionMessage(), JsonbToCStringWorker(), jsonPathFromCstring(), jsonPathToCstring(), logicalrep_write_tuple(), pgp_armor_decode(), pgp_armor_encode(), PLy_elog_impl(), pq_getmessage(), pq_sendint16(), pq_sendint32(), pq_sendint64(), pq_sendint8(), reserveFromBuffer(), SendRowDescriptionCols_3(), and XLogSendPhysical().

 {
     int         newlen;
 
     /*
      * Guard against out-of-range "needed" values.  Without this, we can get
      * an overflow or infinite loop in the following.
      */
     if (needed < 0)             /* should not happen */
     {
 #ifndef FRONTEND
         elog(ERROR, "invalid string enlargement request size: %d", needed);
 #else
         fprintf(stderr, "invalid string enlargement request size: %d\n", needed);
         exit(EXIT_FAILURE);
 #endif
     }
     if (((Size) needed) >= (MaxAllocSize - (Size) str->len))
     {
 #ifndef FRONTEND
         ereport(ERROR,
                 (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
                  errmsg("out of memory"),
                  errdetail("Cannot enlarge string buffer containing %d bytes by %d more bytes.",
                            str->len, needed)));
 #else
         fprintf(stderr,
                 _("out of memory\n\nCannot enlarge string buffer containing %d bytes by %d more bytes.\n"),
                 str->len, needed);
         exit(EXIT_FAILURE);
 #endif
     }
 
     needed += str->len + 1;     /* total space required now */
 
     /* Because of the above test, we now have needed <= MaxAllocSize */
 
     if (needed <= str->maxlen)
         return;                 /* got enough space already */
 
     /*
      * We don't want to allocate just a little more space with each append;
      * for efficiency, double the buffer size each time it overflows.
      * Actually, we might need to more than double it if 'needed' is big...
      */
     newlen = 2 * str->maxlen;
     while (needed > newlen)
         newlen = 2 * newlen;
 
     /*
      * Clamp to MaxAllocSize in case we went past it.  Note we are assuming
      * here that MaxAllocSize <= INT_MAX/2, else the above loop could
      * overflow.  We will still have newlen >= needed.
      */
     if (newlen > (int) MaxAllocSize)
         newlen = (int) MaxAllocSize;
 
     str->data = (char *) repalloc(str->data, newlen);
 
     str->maxlen = newlen;
 }

◆ initStringInfo()

void initStringInfo ( StringInfo str )

Definition at line 59 of file stringinfo.c.

References StringInfoData::data, StringInfoData::maxlen, palloc(), and resetStringInfo().

Referenced by AddFileToManifest(), array_to_text_internal(), auth_peer(), BackendInitialize(), BeginCopyFrom(), bmsToString(), bqarr_in(), brin_page_items(), build_tuplestore_recursively(), BuildIndexValueDescription(), BuildParamLogString(), BuildRestoreCommand(), CheckSCRAMAuth(), checkSharedDependencies(), circle_out(), concat_internal(), config_enum_get_options(), convertToJsonb(), copy_table(), create_cursor(), cube_out(), cursor_to_xml(), dblink_close(), dblink_fdw_validator(), dblink_fetch(), dblink_open(), DeadLockReport(), deparse_expression_pretty(), deparseAnalyzeSizeSql(), deparseFromExprForRel(), do_pg_start_backup(), DropSubscription(), escape_param_str(), escape_xml(), estimate_path_cost_size(), exec_replication_command(), exec_stmt_raise(), ExecBuildSlotPartitionKeyDescription(), ExecBuildSlotValueDescription(), ExecEvalXmlExpr(), execute_extension_script(), ExplainOpenWorker(), ExplainPrintSettings(), ExportSnapshot(), fetch_remote_table_info(), fetch_table_list(), file_fdw_validator(), flatten_reloptions(), flatten_set_variable_args(), format_expr_params(), format_node_dump(), format_operator_internal(), format_preparedparamsdata(), format_procedure_internal(), FreePageManagerDump(), fsm_page_contents(), funcname_signature_string(), generate_opclass_name(), generate_operator_name(), get_connect_string(), get_from_clause(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_target_list(), get_tuple_of_interest(), getObjectDescription(), getObjectIdentityParts(), getObjectTypeDescription(), HandleParallelMessages(), heap_vacuum_rel(), hstore_to_json(), hstore_to_json_loose(), hstore_to_jsonb_loose(), incompatible_module_error(), initialize_worker_spi(), int8_avg_deserialize(), json_object(), json_object_two_arg(), JsonbValueAsText(), jsonpath_send(), jsonPathFromCstring(), jsonPathToCstring(), KnownAssignedXidsDisplay(), lazy_scan_heap(), libpqrcv_create_slot(), libpqrcv_startstreaming(), make_temptable_name_n(), makeStringInfo(), map_multipart_sql_identifier_to_xml_name(), map_sql_catalog_to_xmlschema_types(), map_sql_identifier_to_xml_name(), map_sql_schema_to_xmlschema_types(), map_sql_table_to_xmlschema(), map_sql_type_to_xml_name(), map_sql_type_to_xmlschema_type(), map_sql_typecoll_to_xmlschema_types(), map_sql_value_to_xml_value(), map_xml_name_to_sql_identifier(), merge_children(), mxid_to_string(), NameListToQuotedString(), NameListToString(), nodeToString(), numeric_avg_deserialize(), numeric_deserialize(), numeric_poly_deserialize(), op_signature_string(), packArcInfoCmp(), parse_fcall_arguments(), parse_fcall_arguments_20(), path_encode(), pg_armor(), pg_dearmor(), pg_dependencies_out(), pg_extension_update_paths(), pg_get_constraintdef_worker(), pg_get_function_arguments(), pg_get_function_identity_arguments(), pg_get_function_result(), pg_get_functiondef(), pg_get_indexdef_worker(), pg_get_partkeydef_worker(), pg_get_ruledef_worker(), pg_get_statisticsobj_worker(), pg_get_triggerdef_worker(), pg_get_viewdef_worker(), pg_ndistinct_out(), pg_split_opts(), PLy_elog_impl(), PLy_traceback(), populate_array_report_expected_array(), populate_scalar(), postgres_fdw_validator(), postgresAcquireSampleRowsFunc(), postgresAnalyzeForeignTable(), postgresBeginForeignInsert(), postgresGetForeignPlan(), postgresImportForeignSchema(), PostgresMain(), postgresPlanDirectModify(), postgresPlanForeignModify(), postgresql_fdw_validator(), pq_beginmessage(), pq_begintypsend(), pretty_format_node_dump(), print_function_rettype(), printtup_startup(), process_pipe_input(), ProcSleep(), quote_object_name(), quote_qualified_identifier(), range_bound_escape(), range_deparse(), range_parse_bound(), range_recv(), record_in(), record_out(), recv_password_packet(), refresh_by_match_merge(), replace_text(), replace_text_regexp(), reportDependentObjects(), ri_Check_Pk_Match(), RI_FKey_cascade_del(), RI_FKey_cascade_upd(), RI_FKey_check(), RI_Initial_Check(), RI_PartitionRemove_Check(), ri_ReportViolation(), ri_restrict(), ri_set(), rm_redo_error_callback(), run_ssl_passphrase_command(), schema_get_xml_visible_tables(), send_message_to_frontend(), send_message_to_server_log(), sepgsql_attribute_post_create(), sepgsql_audit_log(), sepgsql_database_post_create(), sepgsql_proc_post_create(), sepgsql_relation_post_create(), sepgsql_schema_post_create(), serialize_deflist(), set_backtrace(), show_sort_group_keys(), ShowTransactionStateRec(), ShowUsage(), StartupXLOG(), stringlist_to_identifierstr(), table_to_xml_internal(), text_format(), txid_snapshot_out(), TypeNameListToString(), TypeNameToString(), typeStringToTypeName(), unaccent_lexize(), uuid_out(), WalReceiverMain(), write_auto_conf_file(), write_csvlog(), XLogDumpDisplayRecord(), XLogInsertRecord(), xml_is_document(), xml_out_internal(), xmlcomment(), xmlconcat(), xmlpi(), xmlroot(), XmlTableGetValue(), and xpath_table().

 {
     int         size = 1024;    /* initial default buffer size */
 
     str->data = (char *) palloc(size);
     str->maxlen = size;
     resetStringInfo(str);
 }

◆ makeStringInfo()

StringInfo makeStringInfo ( void )

Definition at line 41 of file stringinfo.c.

References initStringInfo(), and palloc().

Referenced by array_to_json(), array_to_json_pretty(), buf_init(), copy_table(), CopyTo(), database_to_xml_internal(), database_to_xmlschema_internal(), do_pg_start_backup(), get_range_partbound_string(), json_agg_transfn(), json_build_array(), json_build_object(), json_object_agg_transfn(), json_strip_nulls(), jsonb_pretty(), jsonb_send(), JsonbToCStringWorker(), makeJsonLexContextCstringLen(), makeStringAggState(), NewExplainState(), perform_base_backup(), pg_start_backup(), postgresExplainForeignScan(), query_to_xml_internal(), range_send(), ReceiveCopyBegin(), row_to_json(), row_to_json_pretty(), schema_to_xml_internal(), schema_to_xmlschema_internal(), send_feedback(), StartupDecodingContext(), to_json(), transform_json_string_values(), triggered_change_notification(), and xml_is_document().

 {
     StringInfo  res;
 
     res = (StringInfo) palloc(sizeof(StringInfoData));
 
     initStringInfo(res);
 
     return res;
 }

◆ resetStringInfo()

void resetStringInfo ( StringInfo str )

Definition at line 75 of file stringinfo.c.

References StringInfoData::cursor, StringInfoData::data, and StringInfoData::len.

Referenced by build_tuplestore_recursively(), CopyReadAttributesCSV(), CopyReadAttributesText(), CopyReadBinaryAttribute(), CopyReadLine(), CopySendEndOfRow(), DeadLockReport(), fetch_remote_table_info(), get_target_list(), hstore_to_json(), hstore_to_json_loose(), hstore_to_jsonb_loose(), initialize_worker_spi(), initStringInfo(), InteractiveBackend(), json_lex_string(), LogicalOutputPrepareWrite(), parse_fcall_arguments(), parse_fcall_arguments_20(), pg_split_opts(), postgresImportForeignSchema(), pq_beginmessage_reuse(), pq_getmessage(), pq_getstring(), print_function_rettype(), ProcessRepliesIfAny(), record_in(), refresh_by_match_merge(), send_feedback(), sepgsql_database_post_create(), sepgsql_relation_post_create(), show_sort_group_keys(), WalSndKeepalive(), WalSndPrepareWrite(), WalSndWriteData(), write_auto_conf_file(), XLogSendPhysical(), XLogWalRcvProcessMsg(), XLogWalRcvSendHSFeedback(), and XLogWalRcvSendReply().

 {
     str->data[0] = '\0';
     str->len = 0;
     str->cursor = 0;
 }

Functions