2.11BSD#431 - /usr/src/new/rcs/src/ident.c

   1: /*
   2:  *                     RCS identification operation
   3:  */
   4: #ifndef lint
   5: static char rcsid[]=
   6: "$Header: /arthur/src/local/bin/rcs/src/RCS/ident.c,v 4.4 87/10/23 17:09:57 narten Exp $Purdue CS";
   7: #endif
   8: /*****************************************************************************
   9:  *****************************************************************************
  10:  *
  11:  * Copyright (C) 1982 by Walter F. Tichy
  12:  *                       Purdue University
  13:  *                       Computer Science Department
  14:  *                       West Lafayette, IN 47907
  15:  *
  16:  * All rights reserved. No part of this software may be sold or distributed
  17:  * in any form or by any means without the prior written permission of the
  18:  * author.
  19:  * Report problems and direct all inquiries to Tichy@purdue (ARPA net).
  20:  */
  21: 
  22: /* $Log:	ident.c,v $
  23:  * Revision 4.4  87/10/23  17:09:57  narten
  24:  * added exit(0) so exit return code would be non random
  25:  *
  26:  * Revision 4.3  87/10/18  10:23:55  narten
  27:  * Updating version numbers. Changes relative to 1.1 are actually relative
  28:  * to 4.1
  29:  *
  30:  * Revision 1.3  87/07/09  09:20:52  trinkle
  31:  * Added check to make sure there is at least one arg before comparing argv[1]
  32:  * with "-q".  This necessary on machines that don't allow dereferncing null
  33:  * pointers (i.e. Suns).
  34:  *
  35:  * Revision 1.2  87/03/27  14:21:47  jenkins
  36:  * Port to suns
  37:  *
  38:  * Revision 1.1  84/01/23  14:50:03  kcs
  39:  * Initial revision
  40:  *
  41:  * Revision 4.1  83/05/10  16:31:02  wft
  42:  * Added option -q and input from reading stdin.
  43:  * Marker matching is now done with trymatch() (independent of keywords).
  44:  *
  45:  * Revision 3.4  83/02/18  17:37:49  wft
  46:  * removed printing of new line after last file.
  47:  *
  48:  * Revision 3.3  82/12/04  12:48:55  wft
  49:  * Added LOCKER.
  50:  *
  51:  * Revision 3.2  82/11/28  18:24:17  wft
  52:  * removed Suffix; added ungetc to avoid skipping over trailing KDELIM.
  53:  *
  54:  * Revision 3.1  82/10/13  15:58:51  wft
  55:  * fixed type of variables receiving from getc() (char-->int).
  56: */
  57: 
  58: #include  "rcsbase.h"
  59: #define fflsbuf _flsbuf
  60: /* redefinition of _flsbuf in putc not needed */
  61: #ifndef lint
  62: static char rcsbaseid[] = RCSBASE;
  63: #endif
  64: 
  65: extern enum markers trymatch();
  66: 
  67: int quietflag;
  68: 
  69: main(argc, argv)
  70: int  argc; char  *argv[];
  71: /*  Ident searches the named files for all occurrences
  72:  *  of the pattern $keyword:...$, where the keywords are
  73:  *  Author, Date, Header, Id, Log, RCSfile, Revision, Source, and State.
  74:  */
  75: 
  76: {
  77:    FILE *fp, *fopen();
  78: 
  79:    quietflag = false;
  80:    if (argc > 1 && strcmp("-q",argv[1])==0) {
  81:         quietflag = true;
  82:         argc--; argv++;
  83:    }
  84: 
  85:    if (argc<2) {
  86:      if ((scanfile(stdin) == 0) && !quietflag)
  87:         VOID fprintf(stderr, "ident warning: no id keywords in input\n");
  88:     exit(0);
  89:    }
  90: 
  91:    while ( --argc > 0 ) {
  92:       if ( (fp = fopen(*++argv, "r") ) == NULL ) {
  93:          VOID fprintf(stderr,  "ident error: can't open %s\n", *argv);
  94:          continue;
  95:       } else {
  96:          VOID printf( "%s:\n", *argv);   /*  print file name  */
  97:      if ((scanfile(fp) == 0) && !quietflag)
  98:         VOID fprintf(stderr, "ident warning: no id keywords in %s\n", *argv);
  99:      if (argc>1) putchar('\n');
 100:      VOID fclose(fp);
 101:       }
 102:    }
 103:    exit(0);
 104: }
 105: 
 106: 
 107: int scanfile(file)
 108: FILE * file;
 109: /* Function: scan an open file with descriptor file for keywords.
 110:  * Returns the number of matches.
 111:  */
 112: {
 113:    register int matchcount;
 114:    register int c;
 115: 
 116: 
 117:    matchcount = 0;
 118:    while( (c=getc(file)) != EOF) {
 119:       if ( (char)c==KDELIM)
 120:      matchcount += match(file);
 121:    }
 122:    return matchcount;
 123: }
 124: 
 125: 
 126: 
 127: match(fp)   /* group substring between two KDELIM's; then do pattern match */
 128: FILE *fp;
 129: {
 130:    char line[keyvallength];
 131:    register int c;
 132:    register char * tp;
 133: 
 134:    tp = line;
 135:    while( (c = getc(fp)) != KDELIM ) {
 136:       *tp++ = c;
 137:       if ( c==EOF || c=='\n' || tp>= line+keyvallength-2)
 138:          return(0);
 139:    }
 140:    *tp++ = c;     /*append trailing KDELIM*/
 141:    *tp   = '\0';
 142:    if (trymatch(line,true)!=Nomatch) {
 143:         VOID fprintf(stdout,"     $%s\n",line);
 144:         return(1);
 145:    } else {
 146:       /* no match; put trailing KDELIM back into input */
 147:       VOID ungetc(c,fp );
 148:       return(0);
 149:    }
 150: }

Defined functions

Defined variables

Defined macros