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/* pserror.c
* Copyright (C) Angus J. C. Duggan 1991-1995
* See file LICENSE for details.
*
* Warnings and errors for PS programs
*/
extern char *program ; /* Defined by main program, giving program name */
#include "psutil.h"
#include "pserror.h"
#include "patchlev.h"
#include <string.h>
/* Message functions; there is a single are varargs functions for messages,
warnings, and errors sent to stderr. If called with the flags MESSAGE_EXIT
set, the routine does not return */
#define MAX_MESSAGE 256 /* maximum formatted message length */
#define MAX_FORMAT 16 /* maximum format length */
#define MAX_COLUMN 78 /* maximum column to print upto */
void message(int flags, char *format, ...)
{
va_list args ;
static column = 0 ; /* current screen column for message wrap */
char msgbuf[MAX_MESSAGE] ; /* buffer in which to put the message */
char *bufptr = msgbuf ; /* message buffer pointer */
if ( (flags & MESSAGE_NL) && column != 0 ) { /* new line if not already */
putc('\n', stderr) ;
column = 0 ;
}
if ( flags & MESSAGE_PROGRAM ) {
strcpy(bufptr, program) ;
bufptr += strlen(program) ;
*bufptr++ = ':' ;
*bufptr++ = ' ' ;
}
va_start(args, format) ;
if ( format != NULL ) {
char c ;
while ( (c = *format++) != '\0' ) {
if (c == '%') {
int done, longform, index ;
char fmtbuf[MAX_FORMAT] ;
longform = index = 0 ;
fmtbuf[index++] = c ;
do {
done = 1 ;
fmtbuf[index++] = c = *format++ ;
fmtbuf[index] = '\0' ;
switch (c) {
case '%':
*bufptr++ = '%' ;
case '\0':
break ;
case 'e': case 'E': case 'f': case 'g': case 'G':
{
double d = va_arg(args, double) ;
sprintf(bufptr, fmtbuf, d) ;
bufptr += strlen(bufptr) ;
}
break ;
case 'c': case 'd': case 'i': case 'o':
case 'p': case 'u': case 'x': case 'X':
if ( longform ) {
long l = va_arg(args, long) ;
sprintf(bufptr, fmtbuf, l) ;
} else {
int i = va_arg(args, int) ;
sprintf(bufptr, fmtbuf, i) ;
}
bufptr += strlen(bufptr) ;
break ;
case 's':
{
char *s = va_arg(args, char *) ;
sprintf(bufptr, fmtbuf, s) ;
bufptr += strlen(bufptr) ;
}
break ;
case 'l':
longform = 1 ;
/* FALLTHRU */
default:
done = 0 ;
}
} while ( !done ) ;
} else if ( c == '\n' ) { /* write out message so far and reset column */
int len = bufptr - msgbuf ; /* length of current message */
*bufptr++ = '\n' ;
*bufptr = '\0' ;
if ( column + len > MAX_COLUMN && column > 0 ) {
putc('\n', stderr) ;
column = 0 ;
}
fputs(bufptr = msgbuf, stderr) ;
column = 0 ;
} else
*bufptr++ = c ;
}
*bufptr = '\0' ;
{
int len = bufptr - msgbuf ; /* length of current message */
if ( column + len > MAX_COLUMN && column > 0 ) {
putc('\n', stderr) ;
column = 0 ;
}
fputs(msgbuf, stderr) ;
column += len ;
}
fflush(stderr) ;
}
va_end(args) ;
if ( flags & MESSAGE_EXIT ) /* don't return to program */
exit(1) ;
}
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