glue1.c

unix v7是最后一个广泛发布的研究型UNIX版本

# include "stdio.h"
# define unopen(fil) {if (fil!=NULL) {fclose(fil); fil=NULL;}}
extern char refdir[];
int lmaster 1000;
int reached 0;
FILE *fd 0;
int *hfreq, hfrflg;
int colevel 0;
static union {unsigned *a; long *b;} master NULL;
int iflong;
extern char *fgnames[], **fgnamp;
int prfreqs 0;
int typeindex 0;
char usedir[100];
static int full 1000;
static int tags 0;
char *sinput, *soutput, *tagout;
long indexdate 0, gdate();
int soutlen 1000;
int taglen 1000;

huntmain(argc,argv)
	char *argv[];
{
/* read query from stdin, expect name of indexes in argv[1] */
static FILE *fa, *fb, *fc;
char indexname[100], *qitem[100], *rprog 0;
char grepquery[200];
static char oldname[30] ;
static int nhash 0;
static int maxhash 0;
int falseflg 0, nitem, nfound, frtbl;
static long *hpt 0;
# if D1
fprintf(stderr, "in glue1 argc %d argv %o %o\n", argc, argv[0],argv[1]);
# endif
savedir();
while (argv[1][0] == '-')
	{
# if D1
fprintf(stderr, "argv.1 is %s\n",argv[1]);
# endif
	switch(argv[1][1])
		{
		case 'a': /* all output, incl. false drops */
			falseflg = 1; break;
		case 'r':
			argc--; argv++;
			rprog = argv[1];
			break;
		case 'F': /* put out full text */
			full = setfrom(argv[1][2]);
			break;
		case 'T': /* put out tags */
			tags = setfrom(argv[1][2]);
			break;
		case 'i': /* input in argument string */
			argc--; argv++;
			sinput = argv[1];
			break;
		case 's': /*text output to string */
		case 'o':
			argc--; argv++;
			soutput = argv[1];
			if (argv[2]<16000)
				{
				soutlen = argv[2];
				argc--; argv++;
				}
			break;
		case 't': /*tag output to string */
			argc--; argv++;
			tagout = argv[1];
			if (argv[2]<16000)
				{
				taglen = argv[2];
				argc--; argv++;
				}
			break;
		case 'l': /* specify length of lists */
			argc--; argv++;
			lmaster = atoi(argv[1]);
# if D1
			fprintf(stderr, "lmaster now %d\n",lmaster);
# endif
			break;
		case 'C': 
			argc--; argv++;
			colevel = atoi(argv[1]);
			break;
		}
	argc--; argv++;
	}
strcpy (indexname, todir(argv[1]));
# if D1
fprintf(stderr, "in huntmain indexname %s typeindex %d\n", indexname, typeindex);
# endif
if (typeindex == 0 || strcmp (oldname, indexname) !=0)
	{
	strcpy (oldname, indexname);
	unopen(fa); unopen(fb); unopen(fc);

	if (ckexist(indexname, ".ib"))
		{
# if D1
		fprintf(stderr, "found old index\n");
# endif
		fa = iopen(indexname, ".ia");
		fb = iopen(indexname, ".ib");
		fc = iopen(indexname, ".ic");
		typeindex =1;
# if D1
		fprintf(stderr, "opened f's as %o %o %o\n",fa,fb,fc);
# endif
		indexdate = gdate(fb);
		fread (&nhash, sizeof(nhash), 1, fa);
		fread (&iflong, sizeof(iflong), 1, fa);
		if (nhash > maxhash)
			{
			if (hpt)
				free (hpt, maxhash, sizeof(*hpt));
			hpt=0;
			if (hfreq)
				free(hfreq, maxhash, sizeof(*hfreq));
			hfreq=0;
			maxhash=nhash;
# if D1
			fprintf(stderr, "Freed if needed maxhash %d\n",maxhash);
# endif
			}
		if (hpt==0)
		hpt = zalloc(nhash, sizeof(*hpt));
# if D1
		fprintf(stderr, "hpt now %o\n",hpt);
# endif
		if (hpt == NULL)
			err ("No space for hash list (%d)", nhash);
		fread( hpt, sizeof(*hpt), nhash, fa);
		if (hfreq==0)
		hfreq=zalloc(nhash, sizeof(*hfreq));
		if (hfreq==NULL)
			err ("No space for hash frequencies (%d)", nhash);
		frtbl = fread(hfreq, sizeof(*hfreq), nhash, fa);
		hfrflg = (frtbl == nhash);
# if D1
		fprintf(stderr,"Read pointer files\n");
# endif
		if (master.a == NULL)
			if (iflong)
				master.b = zalloc(lmaster, sizeof(long));
			else
				master.a = zalloc(lmaster, sizeof(int));
		if (master.a == NULL)
			err ("no space for answer list",0);
		}
	else
	if (makefgrep(indexname))
		typeindex=2;
	else
		{
		err ("No files %s\n",indexname);
		exit(1);
		}
	}

# if D1
fprintf(stderr, "typeindex now %d\n",typeindex);
# endif
tagout[0]=0;
if (typeindex==2)
	{
	grepcall(sinput, tagout, indexname);
# if D1
	fprintf(stderr, " back from grepcall\n");
# endif
	restodir();
	return;
	}
nitem = getq(qitem);
# if D1
fprintf(stderr, "approaching doquery fb %o\n", fb);
# endif
nfound = doquery(hpt, nhash, fb, nitem, qitem, master);
# ifdef D1
	fprintf(stderr, "return from doquery with nfound %d\n", nfound);
# endif
if (falseflg == 0)
	nfound = baddrop(master, nfound, fc, nitem, qitem, rprog, full);
# ifdef D1
	fprintf(stderr, "after baddrop with nfound %d\n",nfound);
	fprintf(stderr, "tagout is /%s/, sout /%s/\n",tagout, soutput);
# endif
if (tags)
	result (master, nfound >tags ? tags : nfound, fc);
# if D1
fprintf(stderr, "done with huntmain\n");
fprintf(stderr, "tagout is /%s/\n", tagout);
fprintf(stderr, "string out is /%s/\n", soutput);
# endif
if (fgnamp>fgnames)
	{
	char **fgp;
	int k;
# if D1
	fprintf(stderr, "were %d bad files\n", fgnamp-fgnames);
# endif
	grepquery[0]=0;
	for(k=0; k<nitem; k++)
		{
		strcat(grepquery, " ");
		strcat(grepquery, qitem[k]);
		}
	for(fgp=fgnames; fgp<fgnamp; fgp++)
		{
# if D1
		fprintf(stderr, "Now on %s query /%s/\n", *fgp, grepquery);
# endif
		makefgrep(*fgp);
		grepcall(grepquery, tagout, *fgp);
# if D1
		fprintf(stderr, "tagout now /%s/\n", tagout);
# endif
		}
	}
restodir();
}

todir(t)
	char *t;
{
	char *s;
	s=t;
	while (*s) s++;
	while (s>=t && *s != '/') s--;
	if (s<t) return(t);
*s++ = 0;
t = (*t ? t : "/");
chdir (t);
strcpy (usedir,t);
return(s);
}
setfrom(c)
{
switch(c)
	{
	case 'y': case '\0':
	default:
		return(1000);
	case '1':
	case '2': case '3': case '4': case '5':
	case '6': case '7': case '8': case '9':
		return(c-'0');
	case 'n': case '0':
		return(0);
	}
}