usr/src/ucb/error/errormain.c

static  char *sccsid = "@(#)errormain.c 1.4 (Berkeley) 5/4/82";
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include "error.h"

int     nerrors = 0;
Eptr    er_head;
Eptr    *errors;

int     nfiles = 0;
Eptr    **files;        /* array of pointers into errors*/
int     language = INCC;

char    *currentfilename = "????";
char    *processname;
char    *im_on;                 /* my tty name */

boolean query = FALSE;          /* query the operator if touch files */
boolean notouch = FALSE;        /* don't touch ANY files */
boolean piflag  = FALSE;        /* this is not pi */
boolean terse   = FALSE;        /* Terse output */

char    *suffixlist = ".*";     /* initially, can touch any file */

int     errorsort();
int     onintr();
/*
 *      error [-I ignorename] [-n] [-q] [-t suffixlist] [-s] [-v] [infile]
 *
 *      -T:     terse output
 *
 *      -I:     the following name, `ignorename' contains a list of
 *              function names that are not to be treated as hard errors.
 *              Default: ~/.errorsrc
 *
 *      -n:     don't touch ANY files!
 *
 *      -q:     The user is to be queried before touching each
 *              file; if not specified, all files with hard, non
 *              ignorable errors are touched (assuming they can be).
 *
 *      -t:     touch only files ending with the list of suffices, each
 *              suffix preceded by a dot.
 *              eg, -t .c.y.l
 *              will touch only files ending with .c, .y or .l
 *
 *      -s:     print a summary of the error's categories.
 *
 *      -v:     after touching all files, overlay vi(1), ex(1) or ed(1)
 *              on top of error, entered in the first file with
 *              an error in it, with the appropriate editor
 *              set up to use the "next" command to get the other
 *              files containing errors.
 *
 *      -p:     (obsolete: for older versions of pi without bug
 *              fix regarding printing out the name of the main file
 *              with an error in it)
 *              Take the following argument and use it as the name of
 *              the pascal source file, suffix .p
 *
 *      -E:     show the errors in sorted order; intended for
 *              debugging.
 *
 *      -S:     show the errors in unsorted order
 *              (as they come from the error file)
 *
 *      infile: The error messages come from this file.
 *              Default: stdin
 */
main(argc, argv)
        int     argc;
        char    *argv[];
{
        char    *cp;
        char    *ignorename = 0;
        int     ed_argc;
        char    **ed_argv;              /*return from touchfiles*/
        boolean show_errors = FALSE;
        boolean Show_Errors = FALSE;
        boolean pr_summary = FALSE;
        boolean edit_files = FALSE;

        processname = argv[0];

        errorfile = stdin;
        if (argc > 1) for(; (argc > 1) && (argv[1][0] == '-'); argc--, argv++){
                for (cp = argv[1] + 1; *cp; cp++) switch(*cp){
                default:
                        fprintf(stderr, "%s: -%c: Unknown flag\n",
                                processname, *cp);
                        break;

                case 'n':       notouch = TRUE; break;
                case 'q':       query = TRUE;   break;
                case 'S':       Show_Errors = TRUE;     break;
                case 's':       pr_summary = TRUE;      break;
                case 'v':       edit_files = TRUE;      break;
                case 'T':       terse = TRUE;   break;
                case 't':
                        *cp-- = 0; argv++; argc--;
                        if (argc > 1){
                                suffixlist = argv[1];
                        }
                        break;
                case 'I':       /*ignore file name*/
                        *cp-- = 0; argv++; argc--;
                        if (argc > 1)
                                ignorename = argv[1];
                        break;
                }
        }
        if (notouch)
                suffixlist = 0;
        if (argc > 1){
                if (argc > 3){
                        fprintf(stderr, "%s: Only takes 0 or 1 arguments\n",
                                processname);
                        exit(3);
                }
                if ( (errorfile = fopen(argv[1], "r")) == NULL){
                        fprintf(stderr, "%s: %s: No such file or directory for reading errors.\n",
                                processname, argv[1]);
                        exit(4);
                }
        }
        im_on = "/dev/tty";
        if ( (queryfile = fopen(im_on, "r")) == NULL){
                fprintf(stderr,"%s: Can't open \"%s\" to query the user.\n",
                        processname, im_on);
                exit(9);
        }
        if (signal(SIGINT, onintr) == SIG_IGN)
                signal(SIGINT, SIG_IGN);
        if (signal(SIGTERM, onintr) == SIG_IGN)
                signal(SIGTERM, SIG_IGN);
        getignored(ignorename);
        eaterrors(&nerrors, &errors);
        if (Show_Errors)
                printerrors(TRUE, nerrors, errors);
        qsort(errors, nerrors, sizeof(Eptr), errorsort);
        if (show_errors)
                printerrors(FALSE, nerrors, errors);
        findfiles(nerrors, errors, &nfiles, &files);
#define P(msg, arg) fprintf(stdout, msg, arg)
        if (pr_summary){
            if (nunknown)
              P("%d Errors are unclassifiable.\n", nunknown);
            if (nignore)
              P("%d Errors are classifiable, but totally discarded.\n",nignore);
            if (nsyncerrors)
              P("%d Errors are synchronization errors.\n", nsyncerrors);
            if (nignore)
              P("%d Errors are discarded because they refer to sacrosinct files.\n", ndiscard);
            if (nnulled)
              P("%d Errors are nulled because they refer to specific functions.\n", nnulled);
            if (nnonspec)
              P("%d Errors are not specific to any file.\n", nnonspec);
            if (nthisfile)
              P("%d Errors are specific to a given file, but not to a line.\n", nthisfile);
            if (ntrue)
              P("%d Errors are true errors, and can be inserted into the files.\n", ntrue);
        }
        filenames(nfiles, files);
        fflush(stdout);
        if (touchfiles(nfiles, files, &ed_argc, &ed_argv) && edit_files)
                forkvi(ed_argc, ed_argv);
}

forkvi(argc, argv)
        int     argc;
        char    **argv;
{
        if (query){
                switch(inquire(terse
                    ? "Edit? "
                    : "Do you still want to edit the files you touched? ")){
                case Q_NO:
                case Q_no:
                        return;
                default:
                        break;
                }
        }
        /*
         *      ed_agument's first argument is
         *      a vi/ex compatabile search argument
         *      to find the first occurance of ###
         */
        try("vi", argc, argv);
        try("ex", argc, argv);
        try("ed", argc-1, argv+1);
        fprintf(stdout, "Can't find any editors.\n");
}

try(name, argc, argv)
        char    *name;
        int     argc;
        char    **argv;
{
        argv[0] = name;
        wordvprint(stdout, argc, argv);
        fprintf(stdout, "\n");
        fflush(stderr);
        fflush(stdout);
        sleep(2);
        if (freopen(im_on, "r", stdin) == NULL)
                return;
        if (freopen(im_on, "w", stdout) == NULL)
                return;
        execvp(name, argv);
}

int errorsort(epp1, epp2)
                Eptr    *epp1, *epp2;
{
        reg     Eptr    ep1, ep2;
                int     order;
        /*
         *      Sort by:
         *      1)      synchronization, non specific, discarded errors first;
         *      2)      nulled and true errors last
         *              a)      grouped by similar file names
         *                      1)      grouped in ascending line number
         */
        ep1 = *epp1; ep2 = *epp2;
        if (ep1 == 0 || ep2 == 0)
                return(0);
        if ( (NOTSORTABLE(ep1->error_e_class)) ^ (NOTSORTABLE(ep2->error_e_class))){
                return(NOTSORTABLE(ep1->error_e_class) ? -1 : 1);
        }
        if (NOTSORTABLE(ep1->error_e_class))    /* then both are */
                return(ep1->error_no - ep2->error_no);
        order = strcmp(ep1->error_text[0], ep2->error_text[0]);
        if (order == 0){
                return(ep1->error_line - ep2->error_line);
        }
        return(order);
}