112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* Command line option processing facilities for frontend code
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*
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* Portions Copyright (c) 1996-2024, 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/fe_utils/option_utils.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres_fe.h"
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#include "common/logging.h"
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#include "common/string.h"
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#include "fe_utils/option_utils.h"
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/*
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* Provide strictly harmonized handling of --help and --version
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* options.
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*/
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void
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handle_help_version_opts(int argc, char *argv[],
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const char *fixed_progname, help_handler hlp)
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{
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if (argc > 1)
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{
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if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
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{
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hlp(get_progname(argv[0]));
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exit(0);
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}
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if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
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{
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printf("%s (PostgreSQL) " PG_VERSION "\n", fixed_progname);
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exit(0);
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}
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}
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}
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/*
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* option_parse_int
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*
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* Parse integer value for an option. If the parsing is successful, returns
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* true and stores the result in *result if that's given; if parsing fails,
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* returns false.
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*/
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bool
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option_parse_int(const char *optarg, const char *optname,
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int min_range, int max_range,
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int *result)
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{
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char *endptr;
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int val;
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errno = 0;
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val = strtoint(optarg, &endptr, 10);
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/*
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* Skip any trailing whitespace; if anything but whitespace remains before
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* the terminating character, fail.
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*/
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while (*endptr != '\0' && isspace((unsigned char) *endptr))
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endptr++;
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if (*endptr != '\0')
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{
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pg_log_error("invalid value \"%s\" for option %s",
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optarg, optname);
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return false;
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}
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if (errno == ERANGE || val < min_range || val > max_range)
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{
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pg_log_error("%s must be in range %d..%d",
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optname, min_range, max_range);
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return false;
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}
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if (result)
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*result = val;
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return true;
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}
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/*
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* Provide strictly harmonized handling of the --sync-method option.
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*/
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bool
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parse_sync_method(const char *optarg, DataDirSyncMethod *sync_method)
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{
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if (strcmp(optarg, "fsync") == 0)
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*sync_method = DATA_DIR_SYNC_METHOD_FSYNC;
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else if (strcmp(optarg, "syncfs") == 0)
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{
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#ifdef HAVE_SYNCFS
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*sync_method = DATA_DIR_SYNC_METHOD_SYNCFS;
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#else
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pg_log_error("this build does not support sync method \"%s\"",
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"syncfs");
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return false;
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#endif
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}
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else
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{
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pg_log_error("unrecognized sync method: %s", optarg);
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return false;
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}
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return true;
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}
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