diff options
Diffstat (limited to 'contrib/cvs/src/error.c')
| -rw-r--r-- | contrib/cvs/src/error.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/contrib/cvs/src/error.c b/contrib/cvs/src/error.c new file mode 100644 index 0000000..129ba9b --- /dev/null +++ b/contrib/cvs/src/error.c @@ -0,0 +1,255 @@ +/* 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. */ + +/* 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 + +#ifdef __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 */ +#ifdef __STDC__ +void exit(int status); +#else /* ! __STDC__ */ +void exit (); +#endif /* __STDC__ */ +#endif /* STDC_HEADERS */ + +#ifndef strerror +extern char *strerror (); +#endif + +void +error_exit PROTO ((void)) +{ + rcs_cleanup (); + Lock_Cleanup (); +#ifdef SERVER_SUPPORT + if (server_active) + server_cleanup (0); +#endif +#ifdef SYSTEM_CLEANUP + /* Hook for OS-specific behavior, for example socket subsystems on + NT and OS2 or dealing with windows and arguments on Mac. */ + SYSTEM_CLEANUP (); +#endif + exit (EXIT_FAILURE); +} + +/* Print the program name and error message MESSAGE, which is a printf-style + format string with optional args. This is a very limited printf subset: + %s, %d, %c, %x and %% only (without anything between the % and the s, + d, &c). Callers who want something fancier can use sprintf. + + If ERRNUM is nonzero, print its corresponding system error message. + Exit with status EXIT_FAILURE if STATUS is nonzero. If MESSAGE is "", + no need to print a message. + + I think this is largely cleaned up to the point where it does the right + thing for the server, whether the normal server_active (child process) + case or the error_use_protocol (parent process) case. The one exception + is that STATUS nonzero for error_use_protocol probably doesn't work yet; + in that case still need to use the pending_error machinery in server.c. + + error() does not molest errno; some code (e.g. Entries_Open) depends + on being able to say something like: + error (0, 0, "foo"); + error (0, errno, "bar"); + + */ + +/* VARARGS */ +void +#if defined (__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 +{ + int save_errno = errno; + + if (message[0] != '\0') + { + va_list args; + const char *p; + char *q; + char *str; + int num; + long lnum; + unsigned int unum; + unsigned long ulnum; + int ch; + char buf[100]; + + cvs_outerr (program_name, 0); + if (cvs_cmd_name && *cvs_cmd_name) + { + cvs_outerr (" ", 1); + if (status != 0) + cvs_outerr ("[", 1); + cvs_outerr (cvs_cmd_name, 0); + if (status != 0) + cvs_outerr (" aborted]", 0); + } + cvs_outerr (": ", 2); + + VA_START (args, message); + p = message; + while ((q = strchr (p, '%')) != NULL) + { + static const char msg[] = + "\ninternal error: bad % in error()\n"; + if (q - p > 0) + cvs_outerr (p, q - p); + + switch (q[1]) + { + case 's': + str = va_arg (args, char *); + cvs_outerr (str, strlen (str)); + break; + case 'd': + num = va_arg (args, int); + sprintf (buf, "%d", num); + cvs_outerr (buf, strlen (buf)); + break; + case 'l': + if (q[2] == 'd') + { + lnum = va_arg (args, long); + sprintf (buf, "%ld", lnum); + } + else if (q[2] == 'u') + { + ulnum = va_arg (args, unsigned long); + sprintf (buf, "%lu", ulnum); + } + else goto bad; + cvs_outerr (buf, strlen (buf)); + q++; + break; + case 'x': + unum = va_arg (args, unsigned int); + sprintf (buf, "%x", unum); + cvs_outerr (buf, strlen (buf)); + break; + case 'c': + ch = va_arg (args, int); + buf[0] = ch; + cvs_outerr (buf, 1); + break; + case '%': + cvs_outerr ("%", 1); + break; + default: + bad: + cvs_outerr (msg, sizeof (msg) - 1); + /* Don't just keep going, because q + 1 might point to the + terminating '\0'. */ + goto out; + } + p = q + 2; + } + cvs_outerr (p, strlen (p)); + out: + va_end (args); + + if (errnum != 0) + { + cvs_outerr (": ", 2); + cvs_outerr (strerror (errnum), 0); + } + cvs_outerr ("\n", 1); + } + + if (status) + error_exit (); + errno = save_errno; +} + +/* 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) && defined (__STDC__) +fperrmsg (FILE *fp, int status, int errnum, char *message, ...) +#else +fperrmsg (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) + error_exit (); +} |
