mirror of
https://git.postgresql.org/git/postgresql.git
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284 lines
4.6 KiB
C
284 lines
4.6 KiB
C
/*
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* util.c
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*
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* utility functions
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*
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* Copyright (c) 2010-2011, PostgreSQL Global Development Group
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* contrib/pg_upgrade/util.c
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*/
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#include "pg_upgrade.h"
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#include <signal.h>
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LogOpts log_opts;
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/*
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* report_status()
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*
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* Displays the result of an operation (ok, failed, error message,...)
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*/
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void
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report_status(eLogType type, const char *fmt,...)
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{
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va_list args;
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char message[MAX_STRING];
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va_start(args, fmt);
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vsnprintf(message, sizeof(message), fmt, args);
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va_end(args);
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pg_log(type, "%s\n", message);
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}
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/*
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* prep_status
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*
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* Displays a message that describes an operation we are about to begin.
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* We pad the message out to MESSAGE_WIDTH characters so that all of the "ok" and
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* "failed" indicators line up nicely.
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*
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* A typical sequence would look like this:
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* prep_status("about to flarb the next %d files", fileCount );
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*
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* if(( message = flarbFiles(fileCount)) == NULL)
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* report_status(PG_REPORT, "ok" );
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* else
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* pg_log(PG_FATAL, "failed - %s\n", message );
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*/
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void
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prep_status(const char *fmt,...)
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{
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va_list args;
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char message[MAX_STRING];
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va_start(args, fmt);
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vsnprintf(message, sizeof(message), fmt, args);
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va_end(args);
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if (strlen(message) > 0 && message[strlen(message) - 1] == '\n')
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pg_log(PG_REPORT, "%s", message);
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else
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pg_log(PG_REPORT, "%-" MESSAGE_WIDTH "s", message);
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}
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void
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pg_log(eLogType type, char *fmt,...)
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{
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va_list args;
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char message[MAX_STRING];
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va_start(args, fmt);
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vsnprintf(message, sizeof(message), fmt, args);
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va_end(args);
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if (log_opts.fd != NULL)
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{
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fwrite(message, strlen(message), 1, log_opts.fd);
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/* if we are using OVERWRITE_MESSAGE, add newline */
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if (strchr(message, '\r') != NULL)
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fwrite("\n", 1, 1, log_opts.fd);
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fflush(log_opts.fd);
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}
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switch (type)
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{
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case PG_INFO:
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if (log_opts.verbose)
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printf("%s", _(message));
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break;
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case PG_REPORT:
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case PG_WARNING:
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printf("%s", _(message));
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break;
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case PG_FATAL:
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printf("\n%s", _(message));
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printf("Failure, exiting\n");
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exit(1);
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break;
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case PG_DEBUG:
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if (log_opts.debug)
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fprintf(log_opts.debug_fd, "%s\n", _(message));
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break;
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default:
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break;
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}
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fflush(stdout);
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}
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void
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check_ok(void)
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{
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/* all seems well */
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report_status(PG_REPORT, "ok");
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fflush(stdout);
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}
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/*
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* quote_identifier()
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* Properly double-quote a SQL identifier.
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*
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* The result should be pg_free'd, but most callers don't bother because
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* memory leakage is not a big deal in this program.
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*/
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char *
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quote_identifier(const char *s)
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{
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char *result = pg_malloc(strlen(s) * 2 + 3);
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char *r = result;
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*r++ = '"';
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while (*s)
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{
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if (*s == '"')
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*r++ = *s;
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*r++ = *s;
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s++;
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}
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*r++ = '"';
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*r++ = '\0';
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return result;
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}
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/*
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* get_user_info()
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* (copied from initdb.c) find the current user
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*/
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int
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get_user_info(char **user_name)
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{
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int user_id;
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#ifndef WIN32
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struct passwd *pw = getpwuid(geteuid());
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user_id = geteuid();
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#else /* the windows code */
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struct passwd_win32
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{
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int pw_uid;
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char pw_name[128];
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} pass_win32;
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struct passwd_win32 *pw = &pass_win32;
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DWORD pwname_size = sizeof(pass_win32.pw_name) - 1;
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GetUserName(pw->pw_name, &pwname_size);
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user_id = 1;
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#endif
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*user_name = pg_strdup(pw->pw_name);
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return user_id;
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}
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void *
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pg_malloc(int n)
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{
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void *p = malloc(n);
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if (p == NULL)
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pg_log(PG_FATAL, "%s: out of memory\n", os_info.progname);
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return p;
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}
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void
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pg_free(void *p)
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{
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if (p != NULL)
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free(p);
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}
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char *
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pg_strdup(const char *s)
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{
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char *result = strdup(s);
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if (result == NULL)
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pg_log(PG_FATAL, "%s: out of memory\n", os_info.progname);
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return result;
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}
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/*
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* getErrorText()
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*
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* Returns the text of the error message for the given error number
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*
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* This feature is factored into a separate function because it is
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* system-dependent.
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*/
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const char *
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getErrorText(int errNum)
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{
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#ifdef WIN32
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_dosmaperr(GetLastError());
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#endif
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return pg_strdup(strerror(errNum));
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}
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/*
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* str2uint()
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*
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* convert string to oid
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*/
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unsigned int
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str2uint(const char *str)
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{
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return strtoul(str, NULL, 10);
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}
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/*
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* pg_putenv()
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*
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* This is like putenv(), but takes two arguments.
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* It also does unsetenv() if val is NULL.
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*/
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void
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pg_putenv(const char *var, const char *val)
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{
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if (val)
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{
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#ifndef WIN32
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char *envstr = (char *) pg_malloc(strlen(var) +
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strlen(val) + 2);
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sprintf(envstr, "%s=%s", var, val);
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putenv(envstr);
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/*
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* Do not free envstr because it becomes part of the environment on
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* some operating systems. See port/unsetenv.c::unsetenv.
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*/
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#else
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SetEnvironmentVariableA(var, val);
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#endif
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}
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else
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{
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#ifndef WIN32
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unsetenv(var);
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#else
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SetEnvironmentVariableA(var, "");
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#endif
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}
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}
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