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fork our code we shared between openrcs/cvs into the openrcs dir.

this was starting to become inhuman to maintain without
ugly ugly hacks in the shared code, and it will be easier
to make specific changes for openrcs without touching the
soon-to-be-replaced opencvs code.

/*	$OpenBSD: rlog.c,v 1.51 2006/04/26 02:55:13 joris Exp $	*/
/*
 * Copyright (c) 2005 Joris Vink <joris@openbsd.org>
 * Copyright (c) 2005, 2006 Xavier Santolaria <xsa@openbsd.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"

#include "rcsprog.h"
#include "diff.h"

static void	rlog_file(const char *, RCSFILE *);
static void	rlog_rev_print(struct rcs_delta *);

#define RLOG_OPTSTRING	"hLl::NqRr::s:TtVw::x::z::"
#define REVSEP		"----------------------------"
#define REVEND \
 "============================================================================="

static int hflag, Lflag, lflag, rflag, tflag, Nflag, wflag;
static char *llist = NULL;
static char *slist = NULL;
static char *wlist = NULL;
static char *revisions = NULL;

void
rlog_usage(void)
{
	fprintf(stderr,
	    "usage: rlog [-bhLNqRtV] [-ddates] [-l[lockers]] [-r[revs]]\n"
	    "            [-sstates] [-w[logins]] [-xsuffixes]\n"
	    "            [-ztz] file ...\n");
}

int
rlog_main(int argc, char **argv)
{
	RCSFILE *file;
	int Rflag;
	int i, ch;
	char fpath[MAXPATHLEN];

	rcsnum_flags |= RCSNUM_NO_MAGIC;
	hflag = Rflag = rflag = 0;
	while ((ch = rcs_getopt(argc, argv, RLOG_OPTSTRING)) != -1) {
		switch (ch) {
		case 'h':
			hflag = 1;
			break;
		case 'L':
			Lflag = 1;
			break;
		case 'l':
			lflag = 1;
			llist = rcs_optarg;
			break;
		case 'N':
			Nflag = 1;
			break;
		case 'q':
			/*
			 * kept for compatibility
			 */
			break;
		case 'R':
			Rflag = 1;
			break;
		case 'r':
			rflag = 1;
			revisions = rcs_optarg;
			break;
		case 's':
			slist = rcs_optarg;
			break;
		case 'T':
			/*
			 * kept for compatibility
			 */
			break;
		case 't':
			tflag = 1;
			break;
		case 'V':
			printf("%s\n", rcs_version);
			exit(0);
			/* NOTREACHED */
		case 'w':
			wflag = 1;
			wlist = rcs_optarg;
			break;
		case 'x':
			/* Use blank extension if none given. */
			rcs_suffixes = rcs_optarg ? rcs_optarg : "";
			break;
		case 'z':
			timezone_flag = rcs_optarg;
			break;
		default:
			(usage());
			exit(1);
		}
	}

	argc -= rcs_optind;
	argv += rcs_optind;

	if (argc == 0) {
		warnx("no input file");
		(usage)();
		exit(1);
	}

	if (hflag == 1 && tflag == 1) {
		warnx("warning: -t overrides -h.");
		hflag = 0;
	}

	for (i = 0; i < argc; i++) {
		if (rcs_statfile(argv[i], fpath, sizeof(fpath), 0) < 0)
			continue;

		if ((file = rcs_open(fpath, RCS_READ|RCS_PARSE_FULLY)) == NULL)
			continue;

		if (Lflag == 1 && TAILQ_EMPTY(&(file->rf_locks))) {
			rcs_close(file);
			continue;
		}

		if (Rflag == 1) {
			printf("%s\n", fpath);
			rcs_close(file);
			continue;
		}

		rlog_file(argv[i], file);

		rcs_close(file);
	}

	return (0);
}

static void
rlog_file(const char *fname, RCSFILE *file)
{
	char numb[64];
	u_int nrev;
	struct rcs_sym *sym;
	struct rcs_access *acp;
	struct rcs_delta *rdp;
	struct rcs_lock *lkp;
	char *workfile, *p;

	if (rflag == 1)
		nrev = rcs_rev_select(file, revisions);
	else
		nrev = file->rf_ndelta;

	if ((workfile = basename(fname)) == NULL)
		err(1, "basename");

	/*
	 * In case they specified 'foo,v' as argument.
	 */
	if ((p = strrchr(workfile, ',')) != NULL)
		*p = '\0';

	printf("\nRCS file: %s", file->rf_path);
	printf("\nWorking file: %s", workfile);
	printf("\nhead:");
	if (file->rf_head != NULL)
		printf(" %s", rcsnum_tostr(file->rf_head, numb, sizeof(numb)));

	printf("\nbranch:");
	if (rcs_branch_get(file) != NULL) {
		printf(" %s", rcsnum_tostr(rcs_branch_get(file),
		    numb, sizeof(numb)));
	}

	printf("\nlocks: %s", (file->rf_flags & RCS_SLOCK) ? "strict" : "");
	TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list)
		printf("\n\t%s: %s", lkp->rl_name,
		    rcsnum_tostr(lkp->rl_num, numb, sizeof(numb)));
	printf("\naccess list:\n");
	TAILQ_FOREACH(acp, &(file->rf_access), ra_list)
		printf("\t%s\n", acp->ra_name);

	if (Nflag == 0) {
		printf("symbolic names:\n");
		TAILQ_FOREACH(sym, &(file->rf_symbols), rs_list) {
			printf("\t%s: %s\n", sym->rs_name,
			    rcsnum_tostr(sym->rs_num, numb, sizeof(numb)));
		}
	}

	printf("keyword substitution: %s\n",
	    file->rf_expand == NULL ? "kv" : file->rf_expand);

	printf("total revisions: %u", file->rf_ndelta);

	if (file->rf_head != NULL && hflag == 0 && tflag == 0)
		printf(";\tselected revisions: %u", nrev);

	printf("\n");


	if (hflag == 0 || tflag == 1)
		printf("description:\n%s", file->rf_desc);

	if (hflag == 0 && tflag == 0 &&
	    !(lflag == 1 && TAILQ_EMPTY(&file->rf_locks))) {
		TAILQ_FOREACH(rdp, &(file->rf_delta), rd_list) {
			/*
			 * if selections are enabled verify that entry is
			 * selected.
			 */
			if (rflag == 0 || (rdp->rd_flags & RCS_RD_SELECT))
				rlog_rev_print(rdp);
		}
	}

	printf("%s\n", REVEND);
}

static void
rlog_rev_print(struct rcs_delta *rdp)
{
	int i, found;
	struct tm t;
	char *author, numb[64], *fmt, timeb[64];
	struct rcs_argvector *largv, *sargv, *wargv;

	i = found = 0;
	author = NULL;

	/* -l[lockers] */
	if (lflag == 1) {
		if (rdp->rd_locker != NULL)
			found++;

		if (llist != NULL) {
			/* if locker is empty, no need to go further. */
			if (rdp->rd_locker == NULL)
				return;
			largv = rcs_strsplit(llist, ",");
			for (i = 0; largv->argv[i] != NULL; i++) {
				if (strcmp(rdp->rd_locker, largv->argv[i])
				    == 0) {
					found++;
					break;
				}
				found = 0;
			}
			rcs_argv_destroy(largv);
		}
	}

	/* -sstates */
	if (slist != NULL) {
		sargv = rcs_strsplit(slist, ",");
		for (i = 0; sargv->argv[i] != NULL; i++) {
			if (strcmp(rdp->rd_state, sargv->argv[i]) == 0) {
				found++;
				break;
			}
			found = 0;
		}
		rcs_argv_destroy(sargv);
	}

	/* -w[logins] */
	if (wflag == 1) {
		if (wlist != NULL) {
			wargv = rcs_strsplit(wlist, ",");
			for (i = 0; wargv->argv[i] != NULL; i++) {
				if (strcmp(rdp->rd_author, wargv->argv[i])
				    == 0) {
					found++;
					break;
				}
				found = 0;
			}
			rcs_argv_destroy(wargv);
		} else {
			if ((author = getlogin()) == NULL)
				err(1, "getlogin");

			if (strcmp(rdp->rd_author, author) == 0)
				found++;
		}
	}

	/* XXX dirty... */
	if ((((slist != NULL && wflag == 1) ||
	    (slist != NULL && lflag == 1) ||
	    (lflag == 1 && wflag == 1)) && found < 2) ||
	    (((slist != NULL && lflag == 1 && wflag == 1) ||
	    (slist != NULL || lflag == 1 || wflag == 1)) && found == 0))
		return;

	printf("%s\n", REVSEP);

	rcsnum_tostr(rdp->rd_num, numb, sizeof(numb));

	printf("revision %s", numb);
	if (rdp->rd_locker != NULL)
		printf("\tlocked by: %s;", rdp->rd_locker);

	if (timezone_flag != NULL) {
		rcs_set_tz(timezone_flag, rdp, &t);
		fmt = "%Y/%m/%d %H:%M:%S%z";
	} else {
		t = rdp->rd_date;
		fmt = "%Y/%m/%d %H:%M:%S";
	}

	strftime(timeb, sizeof(timeb), fmt, &t);

	printf("\ndate: %s;  author: %s;  state: %s;\n", timeb, rdp->rd_author,
	    rdp->rd_state);

	printf("%s", rdp->rd_log);
}