/* Z editor options
:ma=1
:ts=6
:bk=0
:wm=0
*/

/*
	This program, both executable and sources, are
	
					Copyright 1986, Jay Ts

					Box 890
					West Oneonta NY 13861

	You may copy, distribute, alter, and use them, but absolutely no
	permission is granted to remove copyright notices from them or
	distribute them, in whole or in part, as, or as part of, a
	commercial product.
*/

#include "stdio.h"

#define MAXERRS 20
#define FOUND_ERROR -1

extern char errfile[];

/*
	The first few characters of the annoying lines that the
	compiler/linker produces every time it runs.
	These will be filtered out!
*/

char t[3][5] =
{
	 {'A', 'z', 't', 'e', 'c'},
	 {'C', 'o', 'd', 'e', ':'},
	 {'A', 'b', 'o', 'r', 't'}
};

FILE *fp, *fopen();

/* print error messages from Compiler's redirected output file */

int geterrs()
{
	int numerrs = 0, getline();
	char s[128];

	if( (fp = fopen(errfile, "r")) == NULL)
	{
		printf("cc: open failed on error file %s\n", errfile);
		return(1);
	}

	while(getline(s)) if( ! fits(s))
	{
		printf("%s\n", s);
		if(++numerrs > MAXERRS) break;
	}

	if(fclose(fp) == -1) printf("can't close error file!\n");
	return(numerrs);
}

int getline(s)
char *s;
{
	int i = 0, c;

	while((c = getc(fp)) != '\n' && c != EOF) s[i++] = c;
	s[i] = '\0';
	return(c == EOF ? 0 : 1);
}

/*
	check to see if line matches one of the messages
	that the C compiler ALWAYS produces
*/

int fits(s)
char *s;
{
	int i, j;

	for(i = 0; i < 3; i++)
	{
		for(j = 0; j < 5; j++) if(t[i][j] != s[j]) break;
		if(j == 5) return(1);
	}
	return(0);
}