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author | peter <peter@FreeBSD.org> | 1996-08-20 23:46:10 +0000 |
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committer | peter <peter@FreeBSD.org> | 1996-08-20 23:46:10 +0000 |
commit | 8982e501c77217c860f79bba431f46a62b607a21 (patch) | |
tree | 70187fdf5be4cbefd0baf46bddac7e5e32c13c24 /contrib/cvs/src/error.c | |
parent | 01ee40fd6a76f6ff7ef247fc1b2cf6e337f216c5 (diff) | |
download | FreeBSD-src-8982e501c77217c860f79bba431f46a62b607a21.zip FreeBSD-src-8982e501c77217c860f79bba431f46a62b607a21.tar.gz |
Import of slightly trimmed cvs-1.8 distribution. Generated files
and non-unix code has been left out.
Diffstat (limited to 'contrib/cvs/src/error.c')
-rw-r--r-- | contrib/cvs/src/error.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/contrib/cvs/src/error.c b/contrib/cvs/src/error.c new file mode 100644 index 0000000..8a10cc7 --- /dev/null +++ b/contrib/cvs/src/error.c @@ -0,0 +1,256 @@ +/* error.c -- error handler for noninteractive utilities + Copyright (C) 1990-1992 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* David MacKenzie */ +/* Brian Berliner added support for CVS */ + +#include "cvs.h" + +#include <stdio.h> + +/* If non-zero, error will use the CVS protocol to stdout to report error + messages. This will only be set in the CVS server parent process; + most other code is run via do_cvs_command, which forks off a child + process and packages up its stderr in the protocol. */ +int error_use_protocol; + +#ifdef HAVE_VPRINTF + +#if __STDC__ +#include <stdarg.h> +#define VA_START(args, lastarg) va_start(args, lastarg) +#else /* ! __STDC__ */ +#include <varargs.h> +#define VA_START(args, lastarg) va_start(args) +#endif /* __STDC__ */ + +#else /* ! HAVE_VPRINTF */ + +#ifdef HAVE_DOPRNT +#define va_alist args +#define va_dcl int args; +#else /* ! HAVE_DOPRNT */ +#define va_alist a1, a2, a3, a4, a5, a6, a7, a8 +#define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; +#endif /* HAVE_DOPRNT */ + +#endif /* HAVE_VPRINTF */ + +#if STDC_HEADERS +#include <stdlib.h> +#include <string.h> +#else /* ! STDC_HEADERS */ +#if __STDC__ +void exit(int status); +#else /* ! __STDC__ */ +void exit (); +#endif /* __STDC__ */ +#endif /* STDC_HEADERS */ + +extern char *strerror (); + +extern int vasprintf (); + +typedef void (*fn_returning_void) PROTO((void)); + +/* Function to call before exiting. */ +static fn_returning_void cleanup_fn; + +fn_returning_void +error_set_cleanup (arg) + fn_returning_void arg; +{ + fn_returning_void retval = cleanup_fn; + cleanup_fn = arg; + return retval; +} + +/* Print the program name and error message MESSAGE, which is a printf-style + format string with optional args. + If ERRNUM is nonzero, print its corresponding system error message. + Exit with status EXIT_FAILURE if STATUS is nonzero. */ +/* VARARGS */ +void +#if defined (HAVE_VPRINTF) && __STDC__ +error (int status, int errnum, const char *message, ...) +#else +error (status, errnum, message, va_alist) + int status; + int errnum; + const char *message; + va_dcl +#endif +{ + FILE *out = stderr; +#ifdef HAVE_VPRINTF + va_list args; +#endif + + if (error_use_protocol) + { + out = stdout; + printf ("E "); + } + +#ifdef HAVE_VPRINTF + { + char *mess = NULL; + char *entire; + size_t len; + + VA_START (args, message); + vasprintf (&mess, message, args); + va_end (args); + + if (mess == NULL) + { + entire = NULL; + status = 1; + } + else + { + len = strlen (mess) + strlen (program_name) + 80; + if (command_name != NULL) + len += strlen (command_name); + if (errnum != 0) + len += strlen (strerror (errnum)); + entire = malloc (len); + if (entire == NULL) + { + free (mess); + status = 1; + } + else + { + strcpy (entire, program_name); + if (command_name != NULL && command_name[0] != '\0') + { + strcat (entire, " "); + if (status != 0) + strcat (entire, "["); + strcat (entire, command_name); + if (status != 0) + strcat (entire, " aborted]"); + } + strcat (entire, ": "); + strcat (entire, mess); + if (errnum != 0) + { + strcat (entire, ": "); + strcat (entire, strerror (errnum)); + } + strcat (entire, "\n"); + free (mess); + } + } + if (error_use_protocol) + fputs (entire ? entire : "out of memory", out); + else + cvs_outerr (entire ? entire : "out of memory", 0); + if (entire != NULL) + free (entire); + } + +#else /* No HAVE_VPRINTF */ + /* I think that all relevant systems have vprintf these days. But + just in case, I'm leaving this code here. */ + + if (command_name && *command_name) + { + if (status) + fprintf (out, "%s [%s aborted]: ", program_name, command_name); + else + fprintf (out, "%s %s: ", program_name, command_name); + } + else + fprintf (out, "%s: ", program_name); + +#ifdef HAVE_VPRINTF + VA_START (args, message); + vfprintf (out, message, args); + va_end (args); +#else +#ifdef HAVE_DOPRNT + _doprnt (message, &args, out); +#else + fprintf (out, message, a1, a2, a3, a4, a5, a6, a7, a8); +#endif +#endif + if (errnum) + fprintf (out, ": %s", strerror (errnum)); + putc ('\n', out); + +#endif /* No HAVE_VPRINTF */ + + /* In the error_use_protocol case, this probably does something useful. + In most other cases, I suspect it is a noop (either stderr is line + buffered or we haven't written anything to stderr) or unnecessary + (if stderr is not line buffered, maybe there is a reason....). */ + fflush (out); + + if (status) + { + if (cleanup_fn) + (*cleanup_fn) (); + exit (EXIT_FAILURE); + } +} + +/* Print the program name and error message MESSAGE, which is a printf-style + format string with optional args to the file specified by FP. + If ERRNUM is nonzero, print its corresponding system error message. + Exit with status EXIT_FAILURE if STATUS is nonzero. */ +/* VARARGS */ +void +#if defined (HAVE_VPRINTF) && __STDC__ +fperror (FILE *fp, int status, int errnum, char *message, ...) +#else +fperror (fp, status, errnum, message, va_alist) + FILE *fp; + int status; + int errnum; + char *message; + va_dcl +#endif +{ +#ifdef HAVE_VPRINTF + va_list args; +#endif + + fprintf (fp, "%s: ", program_name); +#ifdef HAVE_VPRINTF + VA_START (args, message); + vfprintf (fp, message, args); + va_end (args); +#else +#ifdef HAVE_DOPRNT + _doprnt (message, &args, fp); +#else + fprintf (fp, message, a1, a2, a3, a4, a5, a6, a7, a8); +#endif +#endif + if (errnum) + fprintf (fp, ": %s", strerror (errnum)); + putc ('\n', fp); + fflush (fp); + if (status) + { + if (cleanup_fn) + (*cleanup_fn) (); + exit (EXIT_FAILURE); + } +} |