1 /* Identify RCS keyword strings in files. */
2
3 /* Copyright 1982, 1988, 1989 Walter Tichy
4 Copyright 1990, 1991, 1992, 1993, 1994, 1995 Paul Eggert
5 Distributed under license by the Free Software Foundation, Inc.
6
7 This file is part of RCS.
8
9 RCS is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2, or (at your option)
12 any later version.
13
14 RCS is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with RCS; see the file COPYING.
21 If not, write to the Free Software Foundation,
22 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23
24 Report problems and direct all questions to:
25
26 rcs-bugs@cs.purdue.edu
27
28 */
29
30 /*
31 * $FreeBSD: src/gnu/usr.bin/rcs/ident/ident.c,v 1.7.2.1 2001/12/10 20:49:37 peter Exp $
32 * $DragonFly: src/gnu/usr.bin/rcs/ident/ident.c,v 1.2 2003/06/17 04:25:47 dillon Exp $
33 *
34 * Revision 5.9 1995/06/16 06:19:24 eggert
35 * Update FSF address.
36 *
37 * Revision 5.8 1995/06/01 16:23:43 eggert
38 * (exiterr, reportError): New functions, needed for DOS and OS/2 ports.
39 * (scanfile): Use them.
40 *
41 * Revision 5.7 1994/03/20 04:52:58 eggert
42 * Remove `exiting' from identExit.
43 *
44 * Revision 5.6 1993/11/09 17:40:15 eggert
45 * Add -V.
46 *
47 * Revision 5.5 1993/11/03 17:42:27 eggert
48 * Test for char == EOF, not char < 0.
49 *
50 * Revision 5.4 1992/01/24 18:44:19 eggert
51 * lint -> RCS_lint
52 *
53 * Revision 5.3 1991/09/10 22:15:46 eggert
54 * Open files with FOPEN_R, not FOPEN_R_WORK,
55 * because they might be executables, not working files.
56 *
57 * Revision 5.2 1991/08/19 03:13:55 eggert
58 * Report read errors immediately.
59 *
60 * Revision 5.1 1991/02/25 07:12:37 eggert
61 * Don't report empty keywords. Check for I/O errors.
62 *
63 * Revision 5.0 1990/08/22 08:12:37 eggert
64 * Don't limit output to known keywords.
65 * Remove arbitrary limits and lint. Ansify and Posixate.
66 *
67 * Revision 4.5 89/05/01 15:11:54 narten
68 * changed copyright header to reflect current distribution rules
69 *
70 * Revision 4.4 87/10/23 17:09:57 narten
71 * added exit(0) so exit return code would be non random
72 *
73 * Revision 4.3 87/10/18 10:23:55 narten
74 * Updating version numbers. Changes relative to 1.1 are actually relative
75 * to 4.1
76 *
77 * Revision 1.3 87/07/09 09:20:52 trinkle
78 * Added check to make sure there is at least one arg before comparing argv[1]
79 * with "-q". This necessary on machines that don't allow dereferncing null
80 * pointers (i.e. Suns).
81 *
82 * Revision 1.2 87/03/27 14:21:47 jenkins
83 * Port to suns
84 *
85 * Revision 4.1 83/05/10 16:31:02 wft
86 * Added option -q and input from reading stdin.
87 * Marker matching is now done with trymatch() (independent of keywords).
88 *
89 * Revision 3.4 83/02/18 17:37:49 wft
90 * removed printing of new line after last file.
91 *
92 * Revision 3.3 82/12/04 12:48:55 wft
93 * Added LOCKER.
94 *
95 * Revision 3.2 82/11/28 18:24:17 wft
96 * removed Suffix; added ungetc to avoid skipping over trailing KDELIM.
97 *
98 * Revision 3.1 82/10/13 15:58:51 wft
99 * fixed type of variables receiving from getc() (char-->int).
100 */
101
102 #include "rcsbase.h"
103
104 static int match P((FILE*));
105 static int scanfile P((FILE*,char const*,int));
106 static void reportError P((char const*));
107
108 mainProg(identId, "ident", "$DragonFly: src/gnu/usr.bin/rcs/ident/ident.c,v 1.2 2003/06/17 04:25:47 dillon Exp $")
109 /* Ident searches the named files for all occurrences
110 * of the pattern $@: text $ where @ is a keyword.
111 */
112
113 {
114 FILE *fp;
115 int quiet = 0;
116 int status = EXIT_SUCCESS;
117 char const *a;
118
119 while ((a = *++argv) && *a=='-')
120 while (*++a)
121 switch (*a) {
122 case 'q':
123 quiet = 1;
124 break;
125
126 case 'V':
127 VOID printf("RCS version %s\n", RCS_version_string);
128 quiet = -1;
129 break;
130
131 default:
132 VOID fprintf(stderr,
133 "ident: usage: ident -{qV} [file...]\n"
134 );
135 exitmain(EXIT_FAILURE);
136 break;
137 }
138
139 if (0 <= quiet) {
140 if (!a)
141 VOID scanfile(stdin, (char*)0, quiet);
142 else
143 do {
144 if (!(fp = fopen(a, FOPEN_RB))) {
145 reportError(a);
146 status = EXIT_FAILURE;
147 } else if (
148 scanfile(fp, a, quiet) != 0
149 || (argv[1] && putchar('\n') == EOF)
150 )
151 break;
152 } while ((a = *++argv));
153 }
154
155 if (ferror(stdout) || fclose(stdout)!=0) {
156 reportError("standard output");
157 status = EXIT_FAILURE;
158 }
159 exitmain(status);
160 }
161
162 #if RCS_lint
163 # define exiterr identExit
164 #endif
165 void
exiterr()166 exiterr()
167 {
168 _exit(EXIT_FAILURE);
169 }
170
171 static void
reportError(s)172 reportError(s)
173 char const *s;
174 {
175 int e = errno;
176 VOID fprintf(stderr, "%s error: ", cmdid);
177 errno = e;
178 perror(s);
179 }
180
181
182 static int
scanfile(file,name,quiet)183 scanfile(file, name, quiet)
184 register FILE *file;
185 char const *name;
186 int quiet;
187 /* Function: scan an open file with descriptor file for keywords.
188 * Return -1 if there's a write error; exit immediately on a read error.
189 */
190 {
191 register int c;
192
193 if (name) {
194 VOID printf("%s:\n", name);
195 if (ferror(stdout))
196 return -1;
197 } else
198 name = "standard input";
199 c = 0;
200 while (c != EOF || ! (feof(file)|ferror(file))) {
201 if (c == KDELIM) {
202 if ((c = match(file)))
203 continue;
204 if (ferror(stdout))
205 return -1;
206 quiet = true;
207 }
208 c = getc(file);
209 }
210 if (ferror(file) || fclose(file) != 0) {
211 reportError(name);
212 /*
213 * The following is equivalent to exit(EXIT_FAILURE), but we invoke
214 * exiterr to keep lint happy. The DOS and OS/2 ports need exiterr.
215 */
216 VOID fflush(stderr);
217 VOID fflush(stdout);
218 exiterr();
219 }
220 if (!quiet)
221 VOID fprintf(stderr, "%s warning: no id keywords in %s\n", cmdid, name);
222 return 0;
223 }
224
225
226
227 static int
match(fp)228 match(fp) /* group substring between two KDELIM's; then do pattern match */
229 register FILE *fp;
230 {
231 char line[BUFSIZ];
232 register int c;
233 register char * tp;
234
235 tp = line;
236 while ((c = getc(fp)) != VDELIM) {
237 if (c == EOF && feof(fp) | ferror(fp))
238 return c;
239 switch (ctab[c]) {
240 case LETTER: case Letter: case DIGIT:
241 *tp++ = c;
242 if (tp < line+sizeof(line)-4)
243 break;
244 /* fall into */
245 default:
246 return c ? c : '\n'/* anything but 0 or KDELIM or EOF */;
247 }
248 }
249 if (tp == line)
250 return c;
251 *tp++ = c;
252 if ((c = getc(fp)) != ' ')
253 return c ? c : '\n';
254 *tp++ = c;
255 while( (c = getc(fp)) != KDELIM ) {
256 if (c == EOF && feof(fp) | ferror(fp))
257 return c;
258 switch (ctab[c]) {
259 default:
260 *tp++ = c;
261 if (tp < line+sizeof(line)-2)
262 break;
263 /* fall into */
264 case NEWLN: case UNKN:
265 return c ? c : '\n';
266 }
267 }
268 if (tp[-1] != ' ')
269 return c;
270 *tp++ = c; /*append trailing KDELIM*/
271 *tp = '\0';
272 VOID printf(" %c%s\n", KDELIM, line);
273 return 0;
274 }
275