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/*
Take an error message log on stdin with lines of the form
file(linenumber) : error message
and display on stdout the error message followed by the offending
source lines.
Microsoft C uses this format for its messages.
Usage:
errshow <error_log_file >merged_source_and_error_file
[28-Aug-86]
*/
/* This version works with Microsoft C Version 3.0 or later */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXLINE 255
#define MAXFNAME 63 /* PC DOS has short names */
#define SUCCESS 0
#define FAILURE 1
char errmsg[MAXLINE];
char line[MAXLINE];
char fname[MAXFNAME] = "";
FILE *fp = (FILE *)NULL;
int lno = 0;
int errlno = 0;
void cleanup();
void display();
int getfile();
void
main()
{
while (fgets(errmsg,MAXLINE,stdin) != (char *)NULL)
(void)display();
(void)cleanup();
}
void
cleanup() /* clean up and exit */
{
if (fp != (FILE *)NULL)
(void)fclose(fp);
exit(0);
}
void
display() /* display source line matching errmsg[] */
{
char *p;
if ((p = strchr(errmsg,'(')) == (char *)NULL)
return; /* not an error message line */
*p++ = '\0'; /* clobber '('; p points now to line number */
if ((errlno = atoi(p)) <= 0) /* error line number in source file */
return; /* not an error message line */
if (getfile() != SUCCESS)
return;
if (lno > errlno) /* cannot happen */
{
(void)printf("\n?Line number backed up: %s(%s\n",errmsg,p);
rewind(fp);
lno = 0;
}
while (lno < errlno)
{
if (fgets(line,MAXLINE,fp) == (char *)NULL)
{
(void)printf(
"\n?Unexpected EOF before finding line: %s(%s\n",
errmsg,p);
return;
}
lno++;
}
(void)printf("\n%s(%s%7d:%s",errmsg,p,lno,line);
}
int
getfile() /* return SUCCESS on success, FAILURE on error */
{
if (strcmp(fname,errmsg) != 0)
{
if (fp != (FILE *)NULL)
(void)fclose(fp);
(void)strncpy(fname,errmsg,MAXFNAME);
fname[MAXFNAME-1] = '\0';
if ((fp = fopen(fname,"r")) == (FILE *)NULL)
{
(void)printf("\n?Cannot open file [%s]\n",fname);
return(FAILURE);
}
lno = 0;
}
return(SUCCESS);
}
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