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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/locate/locate/fastfind.c	Lines:	0	114	0.0 %
Date:	2017-11-13	Branches:	0	148	0.0 %


/*	$OpenBSD: fastfind.c,v 1.13 2015/10/23 07:57:03 tedu Exp $	*/

/*
 * Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * James A. Woods.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: fastfind.c,v 1.13 2015/10/23 07:57:03 tedu Exp $
 */

#ifndef _LOCATE_STATISTIC_
#define _LOCATE_STATISTIC_

void
statistic (fp, path_fcodes)
	FILE *fp;               /* open database */
	char *path_fcodes;  	/* for error message */
{
	int lines, chars, size, big, zwerg;
	u_char *p, *s;
	int c;
	int count, umlaut;
	u_char bigram1[NBG], bigram2[NBG], path[PATH_MAX];

	for (c = 0, p = bigram1, s = bigram2; c < NBG; c++) {
		p[c] = check_bigram_char(getc(fp));
		s[c] = check_bigram_char(getc(fp));
	}

	lines = chars = big = zwerg = umlaut = 0;
	size = NBG + NBG;

	for (c = getc(fp), count = 0; c != EOF; size++) {
		if (c == SWITCH) {
			count += getwf(fp) - OFFSET;
			size += sizeof(int);
			zwerg++;
		} else
			count += c - OFFSET;

		sane_count(count);
		for (p = path + count; (c = getc(fp)) > SWITCH; size++)
			if (c < PARITY) {
				if (c == UMLAUT) {
					c = getc(fp);
					size++;
					umlaut++;
				}
				p++;
			} else {
				/* bigram char */
				big++;
				p += 2;
			}

		p++;
		lines++;
		chars += (p - path);
	}

	(void)printf("\nDatabase: %s\n", path_fcodes);
	(void)printf("Compression: Front: %2.2f%%, ",
	    (float)(100 * (size + big - (2 * NBG))) / chars);
	(void)printf("Bigram: %2.2f%%, ", (float)(100 * (size - big)) / size);
	(void)printf("Total: %2.2f%%\n",
	    (float)(100 * (size - (2 * NBG))) / chars);
	(void)printf("Filenames: %d, ", lines);
	(void)printf("Characters: %d, ", chars);
	(void)printf("Database size: %d\n", size);
	(void)printf("Bigram characters: %d, ", big);
	(void)printf("Integers: %d, ", zwerg);
	(void)printf("8-Bit characters: %d\n", umlaut);

}
#endif /* _LOCATE_STATISTIC_ */


void


#ifdef FF_ICASE
fastfind_mmap_icase
#else
fastfind_mmap
#endif /* FF_ICASE */
(pathpart, paddr, len, database)
	char *pathpart; 	/* search string */
	caddr_t paddr;  	/* mmap pointer */
	int len;        	/* length of database */
	char *database; 	/* for error message */



{
	u_char *p, *s, *patend, *q, *foundchar;
	int c, cc;
	int count, found, globflag;
	u_char *cutoff;
	u_char bigram1[NBG], bigram2[NBG], path[PATH_MAX];

#ifdef FF_ICASE
	/* use a lookup table for case insensitive search */
	u_char table[UCHAR_MAX + 1];

	tolower_word(pathpart);
#endif /* FF_ICASE*/

	/* init bigram table */
	if (len < (2*NBG)) {
		(void)fprintf(stderr, "database too small: %s\n", database);
		exit(1);
	}

	for (c = 0, p = bigram1, s = bigram2; c < NBG; c++, len-= 2) {
		p[c] = check_bigram_char(*paddr++);
		s[c] = check_bigram_char(*paddr++);
	}

	/* find optimal (last) char for searching */
	for (p = pathpart; *p != '\0'; p++)
		if (strchr(LOCATE_REG, *p) != NULL)
			break;

	if (*p == '\0')
		globflag = 0;
	else
		globflag = 1;

	p = pathpart;
	patend = patprep(p);
	cc = *patend;

#ifdef FF_ICASE
	/* set patend char to true */
	table[TOLOWER(*patend)] = 1;
	table[toupper(*patend)] = 1;
#endif /* FF_ICASE */


	/* main loop */
	found = count = 0;
	foundchar = 0;

	c = (u_char)*paddr++; len--;
	for (; len > 0; ) {

		/* go forward or backward */
		if (c == SWITCH) { /* big step, an integer */
			count += getwm(paddr) - OFFSET;
			len -= INTSIZE; paddr += INTSIZE;
		} else {	   /* slow step, =< 14 chars */
			count += c - OFFSET;
		}

		sane_count(count);
		/* overlay old path */
		p = path + count;
		foundchar = p - 1;

		for (;;) {
			c = (u_char)*paddr++;
			len--;
			/*
			 * == UMLAUT: 8 bit char followed
			 * <= SWITCH: offset
			 * >= PARITY: bigram
			 * rest:      single ascii char
			 *
			 * offset < SWITCH < UMLAUT < ascii < PARITY < bigram
			 */
			if (c < PARITY) {
				if (c <= UMLAUT) {
					if (c == UMLAUT) {
						c = (u_char)*paddr++;
						len--;

					} else
						break; /* SWITCH */
				}
#ifdef FF_ICASE
				if (table[c])
#else
				if (c == cc)
#endif /* FF_ICASE */
					foundchar = p;
				*p++ = c;
			} else {
				/* bigrams are parity-marked */
				TO7BIT(c);

#ifndef FF_ICASE
				if (bigram1[c] == cc ||
				    bigram2[c] == cc)
#else

					if (table[bigram1[c]] ||
					    table[bigram2[c]])
#endif /* FF_ICASE */
						foundchar = p + 1;

				*p++ = bigram1[c];
				*p++ = bigram2[c];
			}
		}

		if (found) {			/* previous line matched */
			cutoff = path;
			*p-- = '\0';
			foundchar = p;
		} else if (foundchar >= path + count) { /* a char matched */
			*p-- = '\0';
			cutoff = path + count;
		} else				/* nothing to do */
			continue;

		found = 0;
		for (s = foundchar; s >= cutoff; s--) {
			if (*s == cc
#ifdef FF_ICASE
			    || TOLOWER(*s) == cc
#endif /* FF_ICASE */
			    ) {	/* fast first char check */
				for (p = patend - 1, q = s - 1; *p != '\0';
				    p--, q--)
					if (*q != *p
#ifdef FF_ICASE
					    && TOLOWER(*q) != *p
#endif /* FF_ICASE */
					    )
						break;
				if (*p == '\0') {   /* fast match success */
					char	*shortpath;

					found = 1;
					shortpath = path;
					if (f_basename)
						shortpath = basename(path);

					if ((!f_basename && (!globflag ||
#ifdef FF_ICASE
					    !fnmatch(pathpart, shortpath,
						FNM_CASEFOLD)))
#else
					    !fnmatch(pathpart, shortpath, 0)))
#endif /* FF_ICASE */
					    || (strstr(shortpath, pathpart) !=
					    NULL)) {
						if (f_silent)
							counter++;
						else if (f_limit) {
							counter++;
							if (f_limit >= counter)
								(void)puts(path);
							else  {
								(void)fprintf(stderr, "[show only %d lines]\n", counter - 1);
								exit(0);
							}
						} else
							(void)puts(path);
					}
					break;
				}
			}
		}
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: fastfind.c,v 1.13 2015/10/23 07:57:03 tedu Exp $ */
2
3			/*
4			* Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
5			* Copyright (c) 1989, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* This code is derived from software contributed to Berkeley by
9			* James A. Woods.
10			*
11			* Redistribution and use in source and binary forms, with or without
12			* modification, are permitted provided that the following conditions
13			* are met:
14			* 1. Redistributions of source code must retain the above copyright
15			* notice, this list of conditions and the following disclaimer.
16			* 2. Redistributions in binary form must reproduce the above copyright
17			* notice, this list of conditions and the following disclaimer in the
18			* documentation and/or other materials provided with the distribution.
19			* 3. Neither the name of the University nor the names of its contributors
20			* may be used to endorse or promote products derived from this software
21			* without specific prior written permission.
22			*
23			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33			* SUCH DAMAGE.
34			*
35			* $Id: fastfind.c,v 1.13 2015/10/23 07:57:03 tedu Exp $
36			*/
37
38			#ifndef _LOCATE_STATISTIC_
39			#define _LOCATE_STATISTIC_
40
41			void
42			statistic (fp, path_fcodes)
43			FILE fp; / open database */
44			char path_fcodes; / for error message */
45			{
46			int lines, chars, size, big, zwerg;
47			u_char p, s;
48			int c;
49			int count, umlaut;
50			u_char bigram1[NBG], bigram2[NBG], path[PATH_MAX];
51
52			for (c = 0, p = bigram1, s = bigram2; c < NBG; c++) {
53			p[c] = check_bigram_char(getc(fp));
54			s[c] = check_bigram_char(getc(fp));
55			}
56
57			lines = chars = big = zwerg = umlaut = 0;
58			size = NBG + NBG;
59
60			for (c = getc(fp), count = 0; c != EOF; size++) {
61			if (c == SWITCH) {
62			count += getwf(fp) - OFFSET;
63			size += sizeof(int);
64			zwerg++;
65			} else
66			count += c - OFFSET;
67
68			sane_count(count);
69			for (p = path + count; (c = getc(fp)) > SWITCH; size++)
70			if (c < PARITY) {
71			if (c == UMLAUT) {
72			c = getc(fp);
73			size++;
74			umlaut++;
75			}
76			p++;
77			} else {
78			/* bigram char */
79			big++;
80			p += 2;
81			}
82
83			p++;
84			lines++;
85			chars += (p - path);
86			}
87
88			(void)printf("\nDatabase: %s\n", path_fcodes);
89			(void)printf("Compression: Front: %2.2f%%, ",
90			(float)(100 * (size + big - (2 * NBG))) / chars);
91			(void)printf("Bigram: %2.2f%%, ", (float)(100 * (size - big)) / size);
92			(void)printf("Total: %2.2f%%\n",
93			(float)(100 * (size - (2 * NBG))) / chars);
94			(void)printf("Filenames: %d, ", lines);
95			(void)printf("Characters: %d, ", chars);
96			(void)printf("Database size: %d\n", size);
97			(void)printf("Bigram characters: %d, ", big);
98			(void)printf("Integers: %d, ", zwerg);
99			(void)printf("8-Bit characters: %d\n", umlaut);
100
101			}
102			#endif /* _LOCATE_STATISTIC_ */
103
104
105			void
106
107
108			#ifdef FF_ICASE
109			fastfind_mmap_icase
110			#else
111			fastfind_mmap
112			#endif /* FF_ICASE */
113			(pathpart, paddr, len, database)
114			char pathpart; / search string */
115			caddr_t paddr; /* mmap pointer */
116			int len; /* length of database */
117			char database; / for error message */
118
119
120
121			{
122			u_char p, s, patend, q, *foundchar;
123			int c, cc;
124			int count, found, globflag;
125			u_char *cutoff;
126			u_char bigram1[NBG], bigram2[NBG], path[PATH_MAX];
127
128			#ifdef FF_ICASE
129			/* use a lookup table for case insensitive search */
130			u_char table[UCHAR_MAX + 1];
131
132			tolower_word(pathpart);
133			#endif /* FF_ICASE*/
134
135			/* init bigram table */
136			if (len < (2*NBG)) {
137			(void)fprintf(stderr, "database too small: %s\n", database);
138			exit(1);
139			}
140
141			for (c = 0, p = bigram1, s = bigram2; c < NBG; c++, len-= 2) {
142			p[c] = check_bigram_char(*paddr++);
143			s[c] = check_bigram_char(*paddr++);
144			}
145
146			/* find optimal (last) char for searching */
147			for (p = pathpart; *p != '\0'; p++)
148			if (strchr(LOCATE_REG, *p) != NULL)
149			break;
150
151			if (*p == '\0')
152			globflag = 0;
153			else
154			globflag = 1;
155
156			p = pathpart;
157			patend = patprep(p);
158			cc = *patend;
159
160			#ifdef FF_ICASE
161			/* set patend char to true */
162			table[TOLOWER(*patend)] = 1;
163			table[toupper(*patend)] = 1;
164			#endif /* FF_ICASE */
165
166
167			/* main loop */
168			found = count = 0;
169			foundchar = 0;
170
171			c = (u_char)*paddr++; len--;
172			for (; len > 0; ) {
173
174			/* go forward or backward */
175			if (c == SWITCH) { /* big step, an integer */
176			count += getwm(paddr) - OFFSET;
177			len -= INTSIZE; paddr += INTSIZE;
178			} else { /* slow step, =< 14 chars */
179			count += c - OFFSET;
180			}
181
182			sane_count(count);
183			/* overlay old path */
184			p = path + count;
185			foundchar = p - 1;
186
187			for (;;) {
188			c = (u_char)*paddr++;
189			len--;
190			/*
191			* == UMLAUT: 8 bit char followed
192			* <= SWITCH: offset
193			* >= PARITY: bigram
194			* rest: single ascii char
195			*
196			* offset < SWITCH < UMLAUT < ascii < PARITY < bigram
197			*/
198			if (c < PARITY) {
199			if (c <= UMLAUT) {
200			if (c == UMLAUT) {
201			c = (u_char)*paddr++;
202			len--;
203
204			} else
205			break; /* SWITCH */
206			}
207			#ifdef FF_ICASE
208			if (table[c])
209			#else
210			if (c == cc)
211			#endif /* FF_ICASE */
212			foundchar = p;
213			*p++ = c;
214			} else {
215			/* bigrams are parity-marked */
216			TO7BIT(c);
217
218			#ifndef FF_ICASE
219			if (bigram1[c] == cc \|\|
220			bigram2[c] == cc)
221			#else
222
223			if (table[bigram1[c]] \|\|
224			table[bigram2[c]])
225			#endif /* FF_ICASE */
226			foundchar = p + 1;
227
228			*p++ = bigram1[c];
229			*p++ = bigram2[c];
230			}
231			}
232
233			if (found) { /* previous line matched */
234			cutoff = path;
235			*p-- = '\0';
236			foundchar = p;
237			} else if (foundchar >= path + count) { /* a char matched */
238			*p-- = '\0';
239			cutoff = path + count;
240			} else /* nothing to do */
241			continue;
242
243			found = 0;
244			for (s = foundchar; s >= cutoff; s--) {
245			if (*s == cc
246			#ifdef FF_ICASE
247			\|\| TOLOWER(*s) == cc
248			#endif /* FF_ICASE */
249			) { /* fast first char check */
250			for (p = patend - 1, q = s - 1; *p != '\0';
251			p--, q--)
252			if (q != p
253			#ifdef FF_ICASE
254			&& TOLOWER(q) != p
255			#endif /* FF_ICASE */
256			)
257			break;
258			if (p == '\0') { / fast match success */
259			char *shortpath;
260
261			found = 1;
262			shortpath = path;
263			if (f_basename)
264			shortpath = basename(path);
265
266			if ((!f_basename && (!globflag \|\|
267			#ifdef FF_ICASE
268			!fnmatch(pathpart, shortpath,
269			FNM_CASEFOLD)))
270			#else
271			!fnmatch(pathpart, shortpath, 0)))
272			#endif /* FF_ICASE */
273			\|\| (strstr(shortpath, pathpart) !=
274			NULL)) {
275			if (f_silent)
276			counter++;
277			else if (f_limit) {
278			counter++;
279			if (f_limit >= counter)
280			(void)puts(path);
281			else {
282			(void)fprintf(stderr, "[show only %d lines]\n", counter - 1);
283			exit(0);
284			}
285			} else
286			(void)puts(path);
287			}
288			break;
289			}
290			}
291			}
292			}
293			}