df57947f08
The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133
332 lines
8.0 KiB
C
332 lines
8.0 KiB
C
/*
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* James A. Woods.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LOCATE_STATISTIC_
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#define _LOCATE_STATISTIC_
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void
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statistic (fp, path_fcodes)
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FILE *fp; /* open database */
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char *path_fcodes; /* for error message */
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{
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register int lines, chars, size, big, zwerg;
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register u_char *p, *s;
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register int c;
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int count, umlaut;
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u_char bigram1[NBG], bigram2[NBG], path[MAXPATHLEN];
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for (c = 0, p = bigram1, s = bigram2; c < NBG; c++) {
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p[c] = check_bigram_char(getc(fp));
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s[c] = check_bigram_char(getc(fp));
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}
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lines = chars = big = zwerg = umlaut = 0;
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size = NBG + NBG;
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for (c = getc(fp), count = 0; c != EOF; size++) {
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if (c == SWITCH) {
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count += getwf(fp) - OFFSET;
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size += sizeof(int);
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zwerg++;
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} else
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count += c - OFFSET;
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for (p = path + count; (c = getc(fp)) > SWITCH; size++)
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if (c < PARITY) {
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if (c == UMLAUT) {
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c = getc(fp);
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size++;
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umlaut++;
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}
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p++;
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} else {
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/* bigram char */
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big++;
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p += 2;
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}
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p++;
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lines++;
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chars += (p - path);
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}
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(void)printf("\nDatabase: %s\n", path_fcodes);
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(void)printf("Compression: Front: %2.2f%%, ",
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(size + big - (2 * NBG)) / (chars / (float)100));
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(void)printf("Bigram: %2.2f%%, ", (size - big) / (size / (float)100));
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(void)printf("Total: %2.2f%%\n",
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(size - (2 * NBG)) / (chars / (float)100));
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(void)printf("Filenames: %d, ", lines);
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(void)printf("Characters: %d, ", chars);
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(void)printf("Database size: %d\n", size);
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(void)printf("Bigram characters: %d, ", big);
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(void)printf("Integers: %d, ", zwerg);
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(void)printf("8-Bit characters: %d\n", umlaut);
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}
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#endif /* _LOCATE_STATISTIC_ */
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extern char separator;
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void
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#ifdef FF_MMAP
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#ifdef FF_ICASE
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fastfind_mmap_icase
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#else
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fastfind_mmap
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#endif /* FF_ICASE */
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(pathpart, paddr, len, database)
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char *pathpart; /* search string */
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caddr_t paddr; /* mmap pointer */
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int len; /* length of database */
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char *database; /* for error message */
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#else /* MMAP */
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#ifdef FF_ICASE
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fastfind_icase
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#else
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fastfind
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#endif /* FF_ICASE */
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(fp, pathpart, database)
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FILE *fp; /* open database */
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char *pathpart; /* search string */
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char *database; /* for error message */
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#endif /* MMAP */
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{
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register u_char *p, *s, *patend, *q, *foundchar;
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register int c, cc;
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int count, found, globflag;
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u_char *cutoff;
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u_char bigram1[NBG], bigram2[NBG], path[MAXPATHLEN];
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#ifdef FF_ICASE
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/* use a lookup table for case insensitive search */
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u_char table[UCHAR_MAX + 1];
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tolower_word(pathpart);
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#endif /* FF_ICASE*/
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/* init bigram table */
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#ifdef FF_MMAP
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for (c = 0, p = bigram1, s = bigram2; c < NBG; c++, len-= 2) {
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p[c] = check_bigram_char(*paddr++);
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s[c] = check_bigram_char(*paddr++);
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}
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#else
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for (c = 0, p = bigram1, s = bigram2; c < NBG; c++) {
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p[c] = check_bigram_char(getc(fp));
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s[c] = check_bigram_char(getc(fp));
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}
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#endif /* FF_MMAP */
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/* find optimal (last) char for searching */
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for (p = pathpart; *p != '\0'; p++)
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if (strchr(LOCATE_REG, *p) != NULL)
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break;
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if (*p == '\0')
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globflag = 0;
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else
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globflag = 1;
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p = pathpart;
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patend = patprep(p);
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cc = *patend;
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#ifdef FF_ICASE
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/* set patend char to true */
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for (c = 0; c < UCHAR_MAX + 1; c++)
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table[c] = 0;
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table[TOLOWER(*patend)] = 1;
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table[toupper(*patend)] = 1;
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#endif /* FF_ICASE */
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/* main loop */
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found = count = 0;
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foundchar = 0;
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#ifdef FF_MMAP
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c = (u_char)*paddr++; len--;
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for (; len > 0; ) {
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#else
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c = getc(fp);
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for (; c != EOF; ) {
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#endif /* FF_MMAP */
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/* go forward or backward */
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if (c == SWITCH) { /* big step, an integer */
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#ifdef FF_MMAP
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count += getwm(paddr) - OFFSET;
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len -= INTSIZE; paddr += INTSIZE;
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#else
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count += getwf(fp) - OFFSET;
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#endif /* FF_MMAP */
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} else { /* slow step, =< 14 chars */
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count += c - OFFSET;
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}
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if (count < 0 || count > MAXPATHLEN)
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errx(1, "corrupted database: %s", database);
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/* overlay old path */
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p = path + count;
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foundchar = p - 1;
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#ifdef FF_MMAP
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for (; len > 0;) {
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c = (u_char)*paddr++;
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len--;
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#else
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for (;;) {
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c = getc(fp);
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#endif /* FF_MMAP */
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/*
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* == UMLAUT: 8 bit char followed
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* <= SWITCH: offset
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* >= PARITY: bigram
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* rest: single ascii char
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*
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* offset < SWITCH < UMLAUT < ascii < PARITY < bigram
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*/
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if (c < PARITY) {
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if (c <= UMLAUT) {
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if (c == UMLAUT) {
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#ifdef FF_MMAP
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c = (u_char)*paddr++;
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len--;
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#else
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c = getc(fp);
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#endif /* FF_MMAP */
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} else
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break; /* SWITCH */
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}
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#ifdef FF_ICASE
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if (table[c])
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#else
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if (c == cc)
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#endif /* FF_ICASE */
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foundchar = p;
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*p++ = c;
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}
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else {
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/* bigrams are parity-marked */
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TO7BIT(c);
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#ifndef FF_ICASE
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if (bigram1[c] == cc ||
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bigram2[c] == cc)
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#else
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if (table[bigram1[c]] ||
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table[bigram2[c]])
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#endif /* FF_ICASE */
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foundchar = p + 1;
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*p++ = bigram1[c];
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*p++ = bigram2[c];
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}
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}
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if (found) { /* previous line matched */
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cutoff = path;
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*p-- = '\0';
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foundchar = p;
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} else if (foundchar >= path + count) { /* a char matched */
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*p-- = '\0';
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cutoff = path + count;
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} else /* nothing to do */
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continue;
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found = 0;
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for (s = foundchar; s >= cutoff; s--) {
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if (*s == cc
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#ifdef FF_ICASE
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|| TOLOWER(*s) == cc
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#endif /* FF_ICASE */
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) { /* fast first char check */
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for (p = patend - 1, q = s - 1; *p != '\0';
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p--, q--)
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if (*q != *p
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#ifdef FF_ICASE
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&& TOLOWER(*q) != *p
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#endif /* FF_ICASE */
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)
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break;
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if (*p == '\0') { /* fast match success */
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found = 1;
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if (!globflag ||
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#ifndef FF_ICASE
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!fnmatch(pathpart, path, 0))
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#else
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!fnmatch(pathpart, path,
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FNM_CASEFOLD))
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#endif /* !FF_ICASE */
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{
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if (f_silent)
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counter++;
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else if (f_limit) {
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counter++;
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if (f_limit >= counter)
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(void)printf("%s%c",path,separator);
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else
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errx(0, "[show only %d lines]", counter - 1);
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} else
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(void)printf("%s%c",path,separator);
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}
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break;
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}
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}
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}
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}
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}
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