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

Include dependency graph for psprintf.c:

Functions
char *	psprintf (const char *fmt,...)

size_t	pvsnprintf (char buf, size_t len, const char fmt, va_list args)

Function Documentation

◆ psprintf()

char* psprintf	(	const char *	fmt,
			...
	)

Definition at line 46 of file psprintf.c.

 {
     int         save_errno = errno;
     size_t      len = 128;      /* initial assumption about buffer size */
  
     for (;;)
     {
         char       *result;
         va_list     args;
         size_t      newlen;
  
         /*
          * Allocate result buffer.  Note that in frontend this maps to malloc
          * with exit-on-error.
          */
         result = (char *) palloc(len);
  
         /* Try to format the data. */
         errno = save_errno;
         va_start(args, fmt);
         newlen = pvsnprintf(result, len, fmt, args);
         va_end(args);
  
         if (newlen < len)
             return result;      /* success */
  
         /* Release buffer and loop around to try again with larger len. */
         pfree(result);
         len = newlen;
     }
 }

References generate_unaccent_rules::args, fmt, len, palloc(), pfree(), pvsnprintf(), va_end(), and va_start().

Referenced by _mdfd_segpath(), accesstype_arg_to_string(), accesstype_to_string(), adjust_data_dir(), anytime_typmodout(), anytimestamp_typmodout(), auth_failed(), BaseBackup(), bbsink_server_begin_archive(), bbsink_server_begin_manifest(), bbsink_server_end_manifest(), BootstrapModeMain(), brin_metapage_info(), brin_page_type(), bt_metap(), bt_page_stats_internal(), bt_target_page_check(), build_function_result_tupdesc_d(), build_server_final_message(), build_server_first_message(), cash_out(), cfopen_read(), cfopen_write(), check_for_composite_data_type_usage(), check_for_data_type_usage(), check_toast_tuple(), check_toasted_attribute(), check_tuple(), check_tuple_attribute(), check_tuple_header(), check_tuple_visibility(), check_valid_polymorphic_signature(), complex_out(), create_script_for_old_cluster_deletion(), create_tablespace_directories(), create_xlog_or_symlink(), datasegpath(), dblink_get_pkey(), defGetString(), describeOneTableDetails(), destroy_tablespace_directories(), do_init(), do_shell(), do_to_timestamp(), dumpAttrDef(), dumpConstraint(), dumpFunc(), dumpPolicy(), dumpPublicationNamespace(), dumpPublicationTable(), dumpRule(), dumpTrigger(), ecpg_postprocess_result(), ecpg_start_test(), editFile(), expand_dynamic_library_name(), expand_tilde(), expect_integer_value(), ExplainNode(), ExplainPropertyFloat(), fetch_finfo_record(), filtered_base_yylex(), float4_to_char(), float8_to_char(), foreign_grouping_ok(), foreign_join_ok(), format_type_extended(), get_collation_actual_version(), get_hba_options(), get_role_password(), get_user_name(), GetConfFilesInDir(), GetDatabasePath(), getFormattedOperatorName(), getObjectIdentityParts(), GetRelationPath(), GetWALRecordInfo(), GetXLogSummaryStats(), GUCArrayAdd(), HandleParallelMessage(), helpSQL(), initialize_data_directory(), initialize_environment(), initializeInput(), InitializeSystemUser(), InitWalRecovery(), int4_to_char(), isolation_start_test(), json_errdetail(), line_out(), llvm_compile_module(), llvm_expand_funcname(), llvm_function_reference(), load_libraries(), log_status_format(), main(), make_temp_sockdir(), makeMultirangeTypeName(), md5_crypt_verify(), open_auth_file(), parse_compress_specification(), parse_hba_auth_opt(), parse_hba_line(), parse_required_wal(), parseCommandLine(), perform_base_backup(), pg_control_checkpoint(), pg_get_multixact_members(), pg_import_system_collations(), pg_logdir_ls_internal(), pg_size_pretty_numeric(), pg_tablespace_databases(), pgstatindex_impl(), plain_crypt_verify(), postgresGetForeignRelSize(), printTypmod(), process_psqlrc_file(), ProcessConfigFileInternal(), ProcessStartupPacket(), prompt_for_password(), pset_value_string(), psql_start_test(), readCommandResponse(), regcomp_auth_token(), scram_init(), SendXlogRecPtrResult(), sequence_options(), set_input(), set_null_conf(), set_tablespace_directory_suffix(), spawn_process(), sql_exec_searchtables(), SS_make_initplan_from_plan(), SS_process_ctes(), start_postmaster(), StartLogStreamer(), StoreQueryTuple(), substitute_libpath_macro(), test_singlerowmode(), tokenize_auth_file(), typenameTypeMod(), validate_compress_specification(), verify_backup_checksums(), verify_backup_directory(), verify_heapam(), widget_out(), write_version_file(), XLogDumpDisplayStats(), and xstrcat().

◆ pvsnprintf()

size_t pvsnprintf	(	char *	buf,
		size_t	len,
		const char *	fmt,
		va_list	args
	)

Definition at line 106 of file psprintf.c.

 {
     int         nprinted;
  
     nprinted = vsnprintf(buf, len, fmt, args);
  
     /* We assume failure means the fmt is bogus, hence hard failure is OK */
     if (unlikely(nprinted < 0))
     {
 #ifndef FRONTEND
         elog(ERROR, "vsnprintf failed: %m with format string \"%s\"", fmt);
 #else
         fprintf(stderr, "vsnprintf failed: %s with format string \"%s\"\n",
                 strerror(errno), fmt);
         exit(EXIT_FAILURE);
 #endif
     }
  
     if ((size_t) nprinted < len)
     {
         /* Success.  Note nprinted does not include trailing null. */
         return (size_t) nprinted;
     }
  
     /*
      * We assume a C99-compliant vsnprintf, so believe its estimate of the
      * required space, and add one for the trailing null.  (If it's wrong, the
      * logic will still work, but we may loop multiple times.)
      *
      * Choke if the required space would exceed MaxAllocSize.  Note we use
      * this palloc-oriented overflow limit even when in frontend.
      */
     if (unlikely((size_t) nprinted > MaxAllocSize - 1))
     {
 #ifndef FRONTEND
         ereport(ERROR,
                 (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
                  errmsg("out of memory")));
 #else
         fprintf(stderr, _("out of memory\n"));
         exit(EXIT_FAILURE);
 #endif
     }
  
     return nprinted + 1;
 }

References _, generate_unaccent_rules::args, buf, elog(), ereport, errcode(), errmsg(), ERROR, exit(), EXIT_FAILURE, fmt, fprintf, len, MaxAllocSize, strerror, unlikely, and vsnprintf.

Referenced by ahprintf(), appendJSONKeyValueFmt(), appendStringInfoVA(), archprintf(), psprintf(), and tarPrintf().

Functions

Function Documentation

◆ psprintf()

◆ pvsnprintf()