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 * Revision 5.9 1995/06/16 06:19:24 eggert 32 * Update FSF address. 33 * 34 * Revision 5.8 1995/06/01 16:23:43 eggert 35 * (exiterr, reportError): New functions, needed for DOS and OS/2 ports. 36 * (scanfile): Use them. 37 * 38 * Revision 5.7 1994/03/20 04:52:58 eggert 39 * Remove `exiting' from identExit. 40 * 41 * Revision 5.6 1993/11/09 17:40:15 eggert 42 * Add -V. 43 * 44 * Revision 5.5 1993/11/03 17:42:27 eggert 45 * Test for char == EOF, not char < 0. 46 * 47 * Revision 5.4 1992/01/24 18:44:19 eggert 48 * lint -> RCS_lint 49 * 50 * Revision 5.3 1991/09/10 22:15:46 eggert 51 * Open files with FOPEN_R, not FOPEN_R_WORK, 52 * because they might be executables, not working files. 53 * 54 * Revision 5.2 1991/08/19 03:13:55 eggert 55 * Report read errors immediately. 56 * 57 * Revision 5.1 1991/02/25 07:12:37 eggert 58 * Don't report empty keywords. Check for I/O errors. 59 * 60 * Revision 5.0 1990/08/22 08:12:37 eggert 61 * Don't limit output to known keywords. 62 * Remove arbitrary limits and lint. Ansify and Posixate. 63 * 64 * Revision 4.5 89/05/01 15:11:54 narten 65 * changed copyright header to reflect current distribution rules 66 * 67 * Revision 4.4 87/10/23 17:09:57 narten 68 * added exit(0) so exit return code would be non random 69 * 70 * Revision 4.3 87/10/18 10:23:55 narten 71 * Updating version numbers. Changes relative to 1.1 are actually relative 72 * to 4.1 73 * 74 * Revision 1.3 87/07/09 09:20:52 trinkle 75 * Added check to make sure there is at least one arg before comparing argv[1] 76 * with "-q". This necessary on machines that don't allow dereferncing null 77 * pointers (i.e. Suns). 78 * 79 * Revision 1.2 87/03/27 14:21:47 jenkins 80 * Port to suns 81 * 82 * Revision 4.1 83/05/10 16:31:02 wft 83 * Added option -q and input from reading stdin. 84 * Marker matching is now done with trymatch() (independent of keywords). 85 * 86 * Revision 3.4 83/02/18 17:37:49 wft 87 * removed printing of new line after last file. 88 * 89 * Revision 3.3 82/12/04 12:48:55 wft 90 * Added LOCKER. 91 * 92 * Revision 3.2 82/11/28 18:24:17 wft 93 * removed Suffix; added ungetc to avoid skipping over trailing KDELIM. 94 * 95 * Revision 3.1 82/10/13 15:58:51 wft 96 * fixed type of variables receiving from getc() (char-->int). 97 */ 98 99 #include "rcsbase.h" 100 101 static int match P((FILE*)); 102 static int scanfile P((FILE*,char const*,int)); 103 static void reportError P((char const*)); 104 105 mainProg(identId, "ident", "$FreeBSD: src/gnu/usr.bin/rcs/ident/ident.c,v 1.7.2.1 2001/12/10 20:49:37 peter Exp $") 106 /* Ident searches the named files for all occurrences 107 * of the pattern $@: text $ where @ is a keyword. 108 */ 109 110 { 111 FILE *fp; 112 int quiet = 0; 113 int status = EXIT_SUCCESS; 114 char const *a; 115 116 while ((a = *++argv) && *a=='-') 117 while (*++a) 118 switch (*a) { 119 case 'q': 120 quiet = 1; 121 break; 122 123 case 'V': 124 VOID printf("RCS version %s\n", RCS_version_string); 125 quiet = -1; 126 break; 127 128 default: 129 VOID fprintf(stderr, 130 "ident: usage: ident -{qV} [file...]\n" 131 ); 132 exitmain(EXIT_FAILURE); 133 break; 134 } 135 136 if (0 <= quiet) 137 if (!a) 138 VOID scanfile(stdin, (char*)0, quiet); 139 else 140 do { 141 if (!(fp = fopen(a, FOPEN_RB))) { 142 reportError(a); 143 status = EXIT_FAILURE; 144 } else if ( 145 scanfile(fp, a, quiet) != 0 146 || (argv[1] && putchar('\n') == EOF) 147 ) 148 break; 149 } while ((a = *++argv)); 150 151 if (ferror(stdout) || fclose(stdout)!=0) { 152 reportError("standard output"); 153 status = EXIT_FAILURE; 154 } 155 exitmain(status); 156 } 157 158 #if RCS_lint 159 # define exiterr identExit 160 #endif 161 void 162 exiterr() 163 { 164 _exit(EXIT_FAILURE); 165 } 166 167 static void 168 reportError(s) 169 char const *s; 170 { 171 int e = errno; 172 VOID fprintf(stderr, "%s error: ", cmdid); 173 errno = e; 174 perror(s); 175 } 176 177 178 static int 179 scanfile(file, name, quiet) 180 register FILE *file; 181 char const *name; 182 int quiet; 183 /* Function: scan an open file with descriptor file for keywords. 184 * Return -1 if there's a write error; exit immediately on a read error. 185 */ 186 { 187 register int c; 188 189 if (name) { 190 VOID printf("%s:\n", name); 191 if (ferror(stdout)) 192 return -1; 193 } else 194 name = "standard input"; 195 c = 0; 196 while (c != EOF || ! (feof(file)|ferror(file))) { 197 if (c == KDELIM) { 198 if ((c = match(file))) 199 continue; 200 if (ferror(stdout)) 201 return -1; 202 quiet = true; 203 } 204 c = getc(file); 205 } 206 if (ferror(file) || fclose(file) != 0) { 207 reportError(name); 208 /* 209 * The following is equivalent to exit(EXIT_FAILURE), but we invoke 210 * exiterr to keep lint happy. The DOS and OS/2 ports need exiterr. 211 */ 212 VOID fflush(stderr); 213 VOID fflush(stdout); 214 exiterr(); 215 } 216 if (!quiet) 217 VOID fprintf(stderr, "%s warning: no id keywords in %s\n", cmdid, name); 218 return 0; 219 } 220 221 222 223 static int 224 match(fp) /* group substring between two KDELIM's; then do pattern match */ 225 register FILE *fp; 226 { 227 char line[BUFSIZ]; 228 register int c; 229 register char * tp; 230 231 tp = line; 232 while ((c = getc(fp)) != VDELIM) { 233 if (c == EOF && feof(fp) | ferror(fp)) 234 return c; 235 switch (ctab[c]) { 236 case LETTER: case Letter: case DIGIT: 237 *tp++ = c; 238 if (tp < line+sizeof(line)-4) 239 break; 240 /* fall into */ 241 default: 242 return c ? c : '\n'/* anything but 0 or KDELIM or EOF */; 243 } 244 } 245 if (tp == line) 246 return c; 247 *tp++ = c; 248 if ((c = getc(fp)) != ' ') 249 return c ? c : '\n'; 250 *tp++ = c; 251 while( (c = getc(fp)) != KDELIM ) { 252 if (c == EOF && feof(fp) | ferror(fp)) 253 return c; 254 switch (ctab[c]) { 255 default: 256 *tp++ = c; 257 if (tp < line+sizeof(line)-2) 258 break; 259 /* fall into */ 260 case NEWLN: case UNKN: 261 return c ? c : '\n'; 262 } 263 } 264 if (tp[-1] != ' ') 265 return c; 266 *tp++ = c; /*append trailing KDELIM*/ 267 *tp = '\0'; 268 VOID printf(" %c%s\n", KDELIM, line); 269 return 0; 270 } 271