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a402a405fa
AIX does not have any of the BSD's warnx and friends functions, and neither does it have getopt_long. Both of these are included, sourced from a pool of permissive licenses, with their license notices intact. In an effort to preserve nativity, this code is not used on other platforms, instead preferring to use the native behaviours available on respective platforms. Additionally, this commit also includes some changes that _removes_ platform-specificity for the Linux platform, setting the _GNU_SOURCE macro once in autoconf, instead of duplicating that in every source file. Signed-off-by: Akash Kulhalli <akash.kulhalli@ibm.com>
117 lines
2.2 KiB
C
117 lines
2.2 KiB
C
/*
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* Implementation of the err/errx/verr/verrx/warn/warnx/vwarn/vwarnx
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* functions from BSD.
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*
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* This file is public-domain; anyone may deal in it without restriction.
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*
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* Written by Graue <graue@oceanbase.org> on January 16, 2006.
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*/
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#if defined(__WIN32) || defined(_AIX)
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#define NEED_ERR
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#define LACK_PROGNAME
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#define NEED_ENDIAN_STUBS
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#define LACK_SYSTYPES
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#endif
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#ifdef NEED_ERR
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/*
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err/warn family of functions cheat sheet:
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Print:
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last component of program name
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[ if fmt is non-NULL
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": "
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the formatted error message
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]
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[ if function name does not end in x
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": "
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strerror(errno)
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]
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newline
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Then if function name has "err" in it, quit with exit code `eval'.
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BSD's -x versions actually print ": " at the end if passed NULL, so I
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duplicate that behavior. Passing these functions NULL is kind of useless
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though.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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extern const char *__progname;
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#define progname __progname
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void vwarn(const char *fmt, va_list args)
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{
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fputs(progname, stderr);
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if (fmt != NULL)
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{
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fputs(": ", stderr);
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vfprintf(stderr, fmt, args);
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}
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fputs(": ", stderr);
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fputs(strerror(errno), stderr);
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putc('\n', stderr);
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}
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void vwarnx(const char *fmt, va_list args)
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{
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fputs(progname, stderr);
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fputs(": ", stderr);
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if (fmt != NULL)
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vfprintf(stderr, fmt, args);
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putc('\n', stderr);
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}
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void verr(int eval, const char *fmt, va_list args)
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{
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vwarn(fmt, args);
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exit(eval);
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}
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void verrx(int eval, const char *fmt, va_list args)
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{
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vwarnx(fmt, args);
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exit(eval);
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}
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void warn(const char *fmt, ...)
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{
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va_list argptr;
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va_start(argptr, fmt);
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vwarn(fmt, argptr);
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va_end(argptr);
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}
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void warnx(const char *fmt, ...)
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{
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va_list argptr;
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va_start(argptr, fmt);
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vwarnx(fmt, argptr);
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va_end(argptr);
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}
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void err(int eval, const char *fmt, ...)
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{
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va_list argptr;
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va_start(argptr, fmt);
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verr(eval, fmt, argptr);
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/* NOTREACHED, so don't worry about va_end() */
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}
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void errx(int eval, const char *fmt, ...)
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{
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va_list argptr;
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va_start(argptr, fmt);
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verrx(eval, fmt, argptr);
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/* NOTREACHED, so don't worry about va_end() */
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}
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#endif
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