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/*-------------------------------------------------------------------------
*
* Command line option processing facilities for frontend code
*
* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/fe_utils/option_utils.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include "common/logging.h"
#include "common/string.h"
#include "fe_utils/option_utils.h"
/*
* Provide strictly harmonized handling of --help and --version
* options.
*/
void
handle_help_version_opts(int argc, char *argv[],
const char *fixed_progname, help_handler hlp)
{
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
hlp(get_progname(argv[0]));
exit(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
printf("%s (PostgreSQL) " PG_VERSION "\n", fixed_progname);
exit(0);
}
}
}
/*
* option_parse_int
*
* Parse integer value for an option. If the parsing is successful, returns
* true and stores the result in *result if that's given; if parsing fails,
* returns false.
*/
bool
option_parse_int(const char *optarg, const char *optname,
int min_range, int max_range,
int *result)
{
char *endptr;
int val;
errno = 0;
val = strtoint(optarg, &endptr, 10);
/*
* Skip any trailing whitespace; if anything but whitespace remains before
* the terminating character, fail.
*/
while (*endptr != '\0' && isspace((unsigned char) *endptr))
endptr++;
if (*endptr != '\0')
{
pg_log_error("invalid value \"%s\" for option %s",
optarg, optname);
return false;
}
if (errno == ERANGE || val < min_range || val > max_range)
{
pg_log_error("%s must be in range %d..%d",
optname, min_range, max_range);
return false;
}
if (result)
*result = val;
return true;
}
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