scyther/src/error.c

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#include <stdlib.h>
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#include <stdio.h>
#include <stdarg.h>
#include "error.h"
//! Die from error with exit code
void
error_die (void)
{
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exit (EXIT_ERROR);
}
//! print to stderror (must be generic to capture linux variants)
void
vprintfstderr (char *fmt, va_list args)
{
#ifdef USESTDERR
vfprintf (stderr, fmt, args);
#else
// no alternative yet
#endif
}
void
printfstderr (char *fmt, ...)
{
va_list args;
va_start (args, fmt);
vprintfstderr (fmt, args);
va_end (args);
}
//! Print error message header
/**
* Adapted from [K&R2], p. 174
*@todo It would be nice to redirect all output to stderr, which would enable use of termprint etc.
*/
void
error_pre (void)
{
printfstderr ("error: ");
}
//! Print post-error message and die.
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/**
* Adapted from [K&R2], p. 174
* Input is comparable to printf, only end of line is not required.
*/
void
error_post (char *fmt, ...)
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{
va_list args;
va_start (args, fmt);
vprintfstderr (fmt, args);
printfstderr ("\n");
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va_end (args);
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exit (EXIT_ERROR);
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}
//! Print error message and die.
/**
* Adapted from [K&R2], p. 174
* Input is comparable to printf, only end of line is not required.
*/
void
error (char *fmt, ...)
{
va_list args;
error_pre ();
va_start (args, fmt);
vprintfstderr (fmt, args);
printfstderr ("\n");
va_end (args);
error_die ();
}
//! Print warning
/**
* Input is comparable to printf, only end of line is not required.
*/
void
warning (char *fmt, ...)
{
va_list args;
va_start (args, fmt);
printfstderr ("warning: ");
vprintfstderr (fmt, args);
printfstderr ("\n");
va_end (args);
}