rlog.c

早期freebsd实现

/*
 *                       RLOG    operation
 */
/*****************************************************************************
 *                       print contents of RCS files
 *****************************************************************************
 */

/* Copyright (C) 1982, 1988, 1989 Walter Tichy
   Copyright 1990, 1991 by Paul Eggert
   Distributed under license by the Free Software Foundation, Inc.

This file is part of RCS.

RCS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

RCS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with RCS; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.

Report problems and direct all questions to:

    [e-mail]

*/




/* $Log: rlog.c,v $
 * Revision 5.9  1991/09/17  19:07:40  eggert
 * Getscript() didn't uncache partial lines.
 *
 * Revision 5.8  1991/08/19  03:13:55  eggert
 * Revision separator is `:', not `-'.
 * Check for missing and duplicate logs.  Tune.
 * Permit log messages that do not end in newline (including empty logs).
 *
 * Revision 5.7  1991/04/21  11:58:31  eggert
 * Add -x, RCSINIT, MS-DOS support.
 *
 * Revision 5.6  1991/02/26  17:07:17  eggert
 * Survive RCS files with missing logs.
 * strsave -> str_save (DG/UX name clash)
 *
 * Revision 5.5  1990/11/01  05:03:55  eggert
 * Permit arbitrary data in logs and comment leaders.
 *
 * Revision 5.4  1990/10/04  06:30:22  eggert
 * Accumulate exit status across files.
 *
 * Revision 5.3  1990/09/11  02:41:16  eggert
 * Plug memory leak.
 *
 * Revision 5.2  1990/09/04  08:02:33  eggert
 * Count RCS lines better.
 *
 * Revision 5.0  1990/08/22  08:13:48  eggert
 * Remove compile-time limits; use malloc instead.  Add setuid support.
 * Switch to GMT.
 * Report dates in long form, to warn about dates past 1999/12/31.
 * Change "added/del" message to make room for the longer dates.
 * Don't generate trailing white space.  Add -V.  Ansify and Posixate.
 *
 * Revision 4.7  89/05/01  15:13:48  narten
 * changed copyright header to reflect current distribution rules
 * 
 * Revision 4.6  88/08/09  19:13:28  eggert
 * Check for memory exhaustion; don't access freed storage.
 * Shrink stdio code size; remove lint.
 * 
 * Revision 4.5  87/12/18  11:46:38  narten
 * more lint cleanups (Guy Harris)
 * 
 * Revision 4.4  87/10/18  10:41:12  narten
 * Updating version numbers
 * Changes relative to 1.1 actually relative to 4.2
 * 
 * Revision 1.3  87/09/24  14:01:10  narten
 * Sources now pass through lint (if you ignore printf/sprintf/fprintf 
 * warnings)
 * 
 * Revision 1.2  87/03/27  14:22:45  jenkins
 * Port to suns
 * 
 * Revision 4.2  83/12/05  09:18:09  wft
 * changed rewriteflag to external.
 * 
 * Revision 4.1  83/05/11  16:16:55  wft
 * Added -b, updated getnumericrev() accordingly.
 * Replaced getpwuid() with getcaller().
 * 
 * Revision 3.7  83/05/11  14:24:13  wft
 * Added options -L and -R;
 * Fixed selection bug with -l on multiple files.
 * Fixed error on dates of the form -d'>date' (rewrote getdatepair()).
 * 
 * Revision 3.6  82/12/24  15:57:53  wft
 * shortened output format.
 *
 * Revision 3.5  82/12/08  21:45:26  wft
 * removed call to checkaccesslist(); used DATEFORM to format all dates;
 * removed unused variables.
 *
 * Revision 3.4  82/12/04  13:26:25  wft
 * Replaced getdelta() with gettree(); removed updating of field lockedby.
 *
 * Revision 3.3  82/12/03  14:08:20  wft
 * Replaced getlogin with getpwuid(), %02d with %.2d, fancydate with PRINTDATE.
 * Fixed printing of nil, removed printing of Suffix,
 * added shortcut if no revisions are printed, disambiguated struct members.
 *
 * Revision 3.2  82/10/18  21:09:06  wft
 * call to curdir replaced with getfullRCSname(),
 * fixed call to getlogin(), cosmetic changes on output,
 * changed conflicting long identifiers.
 *
 * Revision 3.1  82/10/13  16:07:56  wft
 * fixed type of variables receiving from getc() (char -> int).
 */



#include "rcsbase.h"

struct  lockers {                     /* lockers in locker option; stored   */
     char const		* login;      /* lockerlist			    */
     struct     lockers * lockerlink;
     }  ;

struct  stateattri {                  /* states in state option; stored in  */
     char const		* status;     /* statelist			    */
     struct  stateattri * nextstate;
     }  ;

struct  authors {                     /* login names in author option;      */
     char const		* login;      /* stored in authorlist		    */
     struct     authors * nextauthor;
     }  ;

struct Revpairs{                      /* revision or branch range in -r     */
     unsigned		  numfld;     /* option; stored in revlist	    */
     char const		* strtrev;
     char const		* endrev;
     struct  Revpairs   * rnext;
     } ;

struct Datepairs{                     /* date range in -d option; stored in */
     char               strtdate[datesize];   /* duelst and datelist      */
     char               enddate[datesize];
     struct  Datepairs  * dnext;
     };

static char extractdelta P((struct hshentry const*));
static int checkrevpair P((char const*,char const*));
static struct hshentry const *readdeltalog P((void));
static unsigned extdate P((struct hshentry*));
static void cleanup P((void));
static void exttree P((struct hshentry*));
static void getauthor P((char*));
static void getdatepair P((char*));
static void getlocker P((char*));
static void getnumericrev P((void));
static void getrevpairs P((char*));
static void getscript P((struct hshentry*));
static void getstate P((char*));
static void putabranch P((struct hshentry const*));
static void putadelta P((struct hshentry const*,struct hshentry const*,int));
static void putforest P((struct branchhead const*));
static void putree P((struct hshentry const*));
static void putrunk P((void));
static void recentdate P((struct hshentry const*,struct Datepairs*));
static void trunclocks P((void));

static char const *insDelFormat;
static int branchflag;	/*set on -b */
static int exitstatus;
static int lockflag;
static struct Datepairs *datelist, *duelst;
static struct Revpairs *revlist, *Revlst;
static struct authors *authorlist;
static struct lockers *lockerlist;
static struct stateattri *statelist;


mainProg(rlogId, "rlog", "$Id: rlog.c,v 5.9 1991/09/17 19:07:40 eggert Exp $")
{
	static char const cmdusage[] =
		"\nrlog usage: rlog -{bhLRt} -ddates -l[lockers] -rrevs -sstates -w[logins] -Vn file ...";

	register FILE *out;
	char *a, **newargv;
	struct Datepairs *currdate;
	char const *accessListString, *accessFormat, *commentFormat;
	char const *headFormat, *symbolFormat;
	struct access const *curaccess;
	struct assoc const *curassoc;
	struct hshentry const *delta;
	struct lock const *currlock;
	int descflag, selectflag;
	int onlylockflag;  /* print only files with locks */
	int onlyRCSflag;  /* print only RCS file name */
	unsigned revno;

        descflag = selectflag = true;
	onlylockflag = onlyRCSflag = false;
	out = stdout;
	suffixes = X_DEFAULT;

	argc = getRCSINIT(argc, argv, &newargv);
	argv = newargv;
	while (a = *++argv,  0<--argc && *a++=='-') {
		switch (*a++) {

		case 'L':
			onlylockflag = true;
			break;

		case 'R':
			onlyRCSflag =true;
			break;

                case 'l':
                        lockflag = true;
			getlocker(a);
                        break;

                case 'b':
                        branchflag = true;
                        break;

                case 'r':
			getrevpairs(a);
                        break;

                case 'd':
			getdatepair(a);
                        break;

                case 's':
			getstate(a);
                        break;

                case 'w':
			getauthor(a);
                        break;

                case 'h':
			descflag = false;
                        break;

                case 't':
                        selectflag = false;
                        break;

		case 'q':
			/* This has no effect; it's here for consistency.  */
			quietflag = true;
			break;

		case 'x':
			suffixes = a;
			break;

		case 'V':
			setRCSversion(*argv);
			break;

                default:
			faterror("unknown option: %s%s", *argv, cmdusage);

                };
        } /* end of option processing */

	if (argc<1) faterror("no input file%s", cmdusage);

	if (! (descflag|selectflag)) {
		warn("-t overrides -h.");
		descflag = true;
	}

	if (RCSversion < VERSION(5)) {
	    accessListString = "\naccess list:   ";
	    accessFormat = "  %s";
	    commentFormat = "\ncomment leader:  \"";
	    headFormat = "\nRCS file:        %s;   Working file:    %s\nhead:           %s%s\nbranch:         %s%s\nlocks:         ";
	    insDelFormat = "  lines added/del: %lu/%lu";
	    symbolFormat = "  %s: %s;";
	} else {
	    accessListString = "\naccess list:";
	    accessFormat = "\n\t%s";
	    commentFormat = "\ncomment leader: \"";
	    headFormat = "\nRCS file: %s\nWorking file: %s\nhead:%s%s\nbranch:%s%s\nlocks:%s";
	    insDelFormat = "  lines: +%lu -%lu";
	    symbolFormat = "\n\t%s: %s";
	}

        /* now handle all filenames */
        do {
	    ffree();

	    if (pairfilenames(argc, argv, rcsreadopen, true, false)  <=  0)
		continue;

            /* now RCSfilename contains the name of the RCS file, and finptr
             * the file descriptor. Workfilename contains the name of the
             * working file.
             */

	    /* Keep only those locks given by -l.  */
	    if (lockflag)
		trunclocks();

            /* do nothing if -L is given and there are no locks*/
	    if (onlylockflag && !Locks)
		continue;

	    if ( onlyRCSflag ) {
		aprintf(out, "%s\n", RCSfilename);
		continue;
	    }
            /*   print RCS filename , working filename and optional
                 administrative information                         */
            /* could use getfullRCSname() here, but that is very slow */
	    aprintf(out, headFormat, RCSfilename, workfilename,
		    Head ? " " : "",  Head ? Head->num : "",
		    Dbranch ? " " : "",  Dbranch ? Dbranch : "",
		    StrictLocks ? " strict" : ""
	    );
            currlock = Locks;
            while( currlock ) {
		aprintf(out, symbolFormat, currlock->login,
                                currlock->delta->num);
                currlock = currlock->nextlock;
            }
            if (StrictLocks && RCSversion<VERSION(5))
		aputs("  strict", out);

	    aputs(accessListString, out);      /*  print access list  */
            curaccess = AccessList;
            while(curaccess) {
		aprintf(out, accessFormat, curaccess->login);
                curaccess = curaccess->nextaccess;
            }

	    aputs("\nsymbolic names:", out);   /*  print symbolic names   */
	    for (curassoc=Symbols; curassoc; curassoc=curassoc->nextassoc)
		aprintf(out, symbolFormat, curassoc->symbol, curassoc->num);
	    aputs(commentFormat, out);
	    awrite(Comment.string, Comment.size, out);
	    aputs("\"\n", out);
	    if (VERSION(5)<=RCSversion  ||  Expand != KEYVAL_EXPAND)
		aprintf(out, "keyword substitution: %s\n",
			expand_names[Expand]
		);

            gettree();

	    aprintf(out, "total revisions: %u", TotalDeltas);

	    revno = 0;

	    if (Head  &&  selectflag & descflag) {

		getnumericrev();    /* get numeric revision or branch names */

		exttree(Head);

		/*  get most recently date of the dates pointed by duelst  */
		currdate = duelst;
		while( currdate) {
		    VOID sprintf(currdate->strtdate,DATEFORM,0,0,0,0,0,0);
		    recentdate(Head, currdate);
		    currdate = currdate->dnext;
		}

		revno = extdate(Head);

		aprintf(out, ";\tselected revisions: %u", revno);
	    }

	    afputc('\n',out);
	    if (descflag) {
		aputs("description:\n", out);
		getdesc(true);
	    }
	    if (revno) {
		while (! (delta = readdeltalog())->selector  ||  --revno)
		    ;
		if (delta->next && countnumflds(delta->num)==2)
		    /* Read through delta->next to get its insertlns.  */
		    while (readdeltalog() != delta->next)
			;
		putrunk();