mkey1.c

unix v7是最后一个广泛发布的研究型UNIX版本

# include "stdio.h"
extern char *comname; /* "/usr/lib/eign" */
int wholefile = 0;
int keycount = 100;
int labels = 1;
int minlen = 3;
extern int comcount;
char *iglist "XYZ#";

main (argc,argv)
	char *argv[];
{
/* this program expects as its arguments a list of
   files and generates a set of lines of the form
     filename:byte-add,length (tab) key1 key2 key3
   where the byte addresses give the position within
   the file and the keys are the strings off the lines
   which are alphabetic, first six characters only.
*/

int i;
char *name, qn[200];
char *inlist 0;

FILE *f, *ff;

while (argc>1 && argv[1][0] == '-')
	{
	switch(argv[1][1])
		{
		case 'c':
			comname = argv[2];
			argv++; argc--;
			break;
		case 'w':
			wholefile = 1;  break;
		case 'f':
			inlist = argv[2];
			argv++; argc--;
			break;
		case 'i':
			iglist = argv[2];
			argv++; argc--;
			break;
		case 'l':
			minlen = atoi(argv[1]+2);
			if (minlen<=0) minlen=3;
			break;
		case 'n': /* number of common words to use */
			comcount = atoi(argv[1]+2);
			break;
		case 'k': /* number  of keys per file max */
			keycount = atoi(argv[1]+2);
			break;
		case 's': /* suppress labels, search only */
			labels = 0;
			break;
		}
	argc--; argv++;
	}
if (inlist)
	{
	ff = fopen(inlist, "r");
	while (fgets(qn, 200, ff))
		{
		trimnl(qn);
		f = fopen (qn, "r");
		if (f!=NULL)
			dofile(f, qn);
		else
			fprintf(stderr, "Can't read %s\n",qn);
		}
	}
else
if (argc<=1)
	dofile(stdin, "");
else
for(i=1; i<argc; i++)
	{
	f = fopen(name=argv[i], "r");
	if (f==NULL)
		err("No file %s",name);
	else
		dofile(f, name);
	}
exit(0);
}