hunt3.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 51 行

#ifndef lint
static char *sccsid = "@(#)hunt3.c	4.2 (Berkeley) 6/28/83";
#endif

#include "refer..c"
#define BSIZ 250

getq(v)
char *v[];
{
	static char buff[BSIZ];
	static int eof = 0;
	extern char *sinput;
	char *p;
	int c, n = 0, las = 0;
	if (eof) return(-1);
	p = buff;
	while ( (c = (sinput ? *sinput++ : getchar()) ) > 0)
	{
		if (c== '\n')
			break;
		if (isalpha(c) || isdigit(c))
		{
			if (las==0)
			{
				v[n++] = p;
				las=1;
			}
			if (las++ <= 6)
				*p++ = c;
		}
		else
		{
			if (las>0)
				*p++ = 0;
			las=0;
		}
	}
	*p=0;
	if (p > buff + BSIZ)
		fprintf(stderr, "query long than %d characters\n", BSIZ);
	assert(p < buff + BSIZ);
	if (sinput==0 && c<= 0) eof=1;
# if D1
	fprintf(stderr, "no. keys %d\n",n);
	for(c=0; c<n; c++)
		fprintf(stderr, "keys X%sX\n", v[c]);
# endif
	return(n);
}