File: [local] / src / usr.bin / rcs / rcs.c (download)
Revision 1.89, Sun Nov 28 19:28:42 2021 UTC (2 years, 5 months ago) by deraadt
Branch: MAIN
CVS Tags: OPENBSD_7_5_BASE, OPENBSD_7_5, OPENBSD_7_4_BASE, OPENBSD_7_4, OPENBSD_7_3_BASE, OPENBSD_7_3, OPENBSD_7_2_BASE, OPENBSD_7_2, OPENBSD_7_1_BASE, OPENBSD_7_1, HEAD
Changes since 1.88: +6 -4 lines
Stop using MAXBSIZE to eliminate sys/param.h including (which injects a
ton of namespace intrusion). Create local sizes, and refactor some code
along the way.
ok millert
|
/* $OpenBSD: rcs.c,v 1.89 2021/11/28 19:28:42 deraadt Exp $ */
/*
* Copyright (c) 2004 Jean-Francois Brousseau <jfb@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 <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "diff.h"
#include "rcs.h"
#include "rcsparse.h"
#include "rcsprog.h"
#include "rcsutil.h"
#include "xmalloc.h"
#define _MAXBSIZE (64 * 1024)
#define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
/* invalid characters in RCS states */
static const char rcs_state_invch[] = RCS_STATE_INVALCHAR;
/* invalid characters in RCS symbol names */
static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
struct rcs_kw rcs_expkw[] = {
{ "Author", RCS_KW_AUTHOR },
{ "Date", RCS_KW_DATE },
{ "Locker", RCS_KW_LOCKER },
{ "Header", RCS_KW_HEADER },
{ "Id", RCS_KW_ID },
{ "OpenBSD", RCS_KW_ID },
{ "Log", RCS_KW_LOG },
{ "Name", RCS_KW_NAME },
{ "RCSfile", RCS_KW_RCSFILE },
{ "Revision", RCS_KW_REVISION },
{ "Source", RCS_KW_SOURCE },
{ "State", RCS_KW_STATE },
{ "Mdocdate", RCS_KW_MDOCDATE },
};
int rcs_errno = RCS_ERR_NOERR;
char *timezone_flag = NULL;
int rcs_patch_lines(struct rcs_lines *, struct rcs_lines *);
static int rcs_movefile(char *, char *, mode_t, u_int);
static void rcs_freedelta(struct rcs_delta *);
static void rcs_strprint(const u_char *, size_t, FILE *);
static BUF *rcs_expand_keywords(char *, struct rcs_delta *, BUF *, int);
RCSFILE *
rcs_open(const char *path, int fd, int flags, ...)
{
int mode;
mode_t fmode;
RCSFILE *rfp;
va_list vap;
struct rcs_delta *rdp;
struct rcs_lock *lkr;
fmode = S_IRUSR|S_IRGRP|S_IROTH;
flags &= 0xffff; /* ditch any internal flags */
if (flags & RCS_CREATE) {
va_start(vap, flags);
mode = va_arg(vap, int);
va_end(vap);
fmode = (mode_t)mode;
}
rfp = xcalloc(1, sizeof(*rfp));
rfp->rf_path = xstrdup(path);
rfp->rf_flags = flags | RCS_SLOCK | RCS_SYNCED;
rfp->rf_mode = fmode;
if (fd == -1)
rfp->rf_file = NULL;
else if ((rfp->rf_file = fdopen(fd, "r")) == NULL)
err(1, "rcs_open: fdopen: `%s'", path);
TAILQ_INIT(&(rfp->rf_delta));
TAILQ_INIT(&(rfp->rf_access));
TAILQ_INIT(&(rfp->rf_symbols));
TAILQ_INIT(&(rfp->rf_locks));
if (!(rfp->rf_flags & RCS_CREATE)) {
if (rcsparse_init(rfp))
errx(1, "could not parse admin data");
/* fill in rd_locker */
TAILQ_FOREACH(lkr, &(rfp->rf_locks), rl_list) {
if ((rdp = rcs_findrev(rfp, lkr->rl_num)) == NULL) {
rcs_close(rfp);
return (NULL);
}
rdp->rd_locker = xstrdup(lkr->rl_name);
}
}
return (rfp);
}
/*
* rcs_close()
*
* Close an RCS file handle.
*/
void
rcs_close(RCSFILE *rfp)
{
struct rcs_delta *rdp;
struct rcs_access *rap;
struct rcs_lock *rlp;
struct rcs_sym *rsp;
if ((rfp->rf_flags & RCS_WRITE) && !(rfp->rf_flags & RCS_SYNCED))
rcs_write(rfp);
while (!TAILQ_EMPTY(&(rfp->rf_delta))) {
rdp = TAILQ_FIRST(&(rfp->rf_delta));
TAILQ_REMOVE(&(rfp->rf_delta), rdp, rd_list);
rcs_freedelta(rdp);
}
while (!TAILQ_EMPTY(&(rfp->rf_access))) {
rap = TAILQ_FIRST(&(rfp->rf_access));
TAILQ_REMOVE(&(rfp->rf_access), rap, ra_list);
free(rap->ra_name);
free(rap);
}
while (!TAILQ_EMPTY(&(rfp->rf_symbols))) {
rsp = TAILQ_FIRST(&(rfp->rf_symbols));
TAILQ_REMOVE(&(rfp->rf_symbols), rsp, rs_list);
rcsnum_free(rsp->rs_num);
free(rsp->rs_name);
free(rsp);
}
while (!TAILQ_EMPTY(&(rfp->rf_locks))) {
rlp = TAILQ_FIRST(&(rfp->rf_locks));
TAILQ_REMOVE(&(rfp->rf_locks), rlp, rl_list);
rcsnum_free(rlp->rl_num);
free(rlp->rl_name);
free(rlp);
}
rcsnum_free(rfp->rf_head);
rcsnum_free(rfp->rf_branch);
if (rfp->rf_file != NULL)
fclose(rfp->rf_file);
free(rfp->rf_path);
free(rfp->rf_comment);
free(rfp->rf_expand);
free(rfp->rf_desc);
if (rfp->rf_pdata != NULL)
rcsparse_free(rfp);
free(rfp);
}
/*
* rcs_write()
*
* Write the contents of the RCS file handle <rfp> to disk in the file whose
* path is in <rf_path>.
*/
void
rcs_write(RCSFILE *rfp)
{
FILE *fp;
char numbuf[RCS_REV_BUFSZ], *fn;
struct rcs_access *ap;
struct rcs_sym *symp;
struct rcs_branch *brp;
struct rcs_delta *rdp;
struct rcs_lock *lkp;
size_t len;
int fd;
fn = NULL;
if (rfp->rf_flags & RCS_SYNCED)
return;
/* Write operations need the whole file parsed */
if (rcsparse_deltatexts(rfp, NULL))
errx(1, "problem parsing deltatexts");
(void)xasprintf(&fn, "%s/rcs.XXXXXXXXXX", rcs_tmpdir);
if ((fd = mkstemp(fn)) == -1)
err(1, "%s", fn);
if ((fp = fdopen(fd, "w+")) == NULL) {
int saved_errno;
saved_errno = errno;
(void)unlink(fn);
errno = saved_errno;
err(1, "%s", fn);
}
worklist_add(fn, &temp_files);
if (rfp->rf_head != NULL)
rcsnum_tostr(rfp->rf_head, numbuf, sizeof(numbuf));
else
numbuf[0] = '\0';
fprintf(fp, "head\t%s;\n", numbuf);
if (rfp->rf_branch != NULL) {
rcsnum_tostr(rfp->rf_branch, numbuf, sizeof(numbuf));
fprintf(fp, "branch\t%s;\n", numbuf);
}
fputs("access", fp);
TAILQ_FOREACH(ap, &(rfp->rf_access), ra_list) {
fprintf(fp, "\n\t%s", ap->ra_name);
}
fputs(";\n", fp);
fprintf(fp, "symbols");
TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
if (RCSNUM_ISBRANCH(symp->rs_num))
rcsnum_addmagic(symp->rs_num);
rcsnum_tostr(symp->rs_num, numbuf, sizeof(numbuf));
fprintf(fp, "\n\t%s:%s", symp->rs_name, numbuf);
}
fprintf(fp, ";\n");
fprintf(fp, "locks");
TAILQ_FOREACH(lkp, &(rfp->rf_locks), rl_list) {
rcsnum_tostr(lkp->rl_num, numbuf, sizeof(numbuf));
fprintf(fp, "\n\t%s:%s", lkp->rl_name, numbuf);
}
fprintf(fp, ";");
if (rfp->rf_flags & RCS_SLOCK)
fprintf(fp, " strict;");
fputc('\n', fp);
fputs("comment\t@", fp);
if (rfp->rf_comment != NULL) {
rcs_strprint((const u_char *)rfp->rf_comment,
strlen(rfp->rf_comment), fp);
fputs("@;\n", fp);
} else
fputs("# @;\n", fp);
if (rfp->rf_expand != NULL) {
fputs("expand @", fp);
rcs_strprint((const u_char *)rfp->rf_expand,
strlen(rfp->rf_expand), fp);
fputs("@;\n", fp);
}
fputs("\n\n", fp);
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
fprintf(fp, "%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
sizeof(numbuf)));
fprintf(fp, "date\t%d.%02d.%02d.%02d.%02d.%02d;",
rdp->rd_date.tm_year + 1900, rdp->rd_date.tm_mon + 1,
rdp->rd_date.tm_mday, rdp->rd_date.tm_hour,
rdp->rd_date.tm_min, rdp->rd_date.tm_sec);
fprintf(fp, "\tauthor %s;\tstate %s;\n",
rdp->rd_author, rdp->rd_state);
fputs("branches", fp);
TAILQ_FOREACH(brp, &(rdp->rd_branches), rb_list) {
fprintf(fp, "\n\t%s", rcsnum_tostr(brp->rb_num, numbuf,
sizeof(numbuf)));
}
fputs(";\n", fp);
fprintf(fp, "next\t%s;\n\n", rcsnum_tostr(rdp->rd_next,
numbuf, sizeof(numbuf)));
}
fputs("\ndesc\n@", fp);
if (rfp->rf_desc != NULL && (len = strlen(rfp->rf_desc)) > 0) {
rcs_strprint((const u_char *)rfp->rf_desc, len, fp);
if (rfp->rf_desc[len-1] != '\n')
fputc('\n', fp);
}
fputs("@\n", fp);
/* deltatexts */
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
fprintf(fp, "\n\n%s\n", rcsnum_tostr(rdp->rd_num, numbuf,
sizeof(numbuf)));
fputs("log\n@", fp);
if (rdp->rd_log != NULL) {
len = strlen(rdp->rd_log);
rcs_strprint((const u_char *)rdp->rd_log, len, fp);
if (len == 0 || rdp->rd_log[len-1] != '\n')
fputc('\n', fp);
}
fputs("@\ntext\n@", fp);
if (rdp->rd_text != NULL)
rcs_strprint(rdp->rd_text, rdp->rd_tlen, fp);
fputs("@\n", fp);
}
(void)fclose(fp);
if (rcs_movefile(fn, rfp->rf_path, rfp->rf_mode, rfp->rf_flags) == -1) {
(void)unlink(fn);
errx(1, "rcs_movefile failed");
}
rfp->rf_flags |= RCS_SYNCED;
free(fn);
}
/*
* rcs_movefile()
*
* Move a file using rename(2) if possible and copying if not.
* Returns 0 on success, -1 on failure.
*/
static int
rcs_movefile(char *from, char *to, mode_t perm, u_int to_flags)
{
FILE *src, *dst;
size_t nread, nwritten;
char *buf;
if (rename(from, to) == 0) {
if (chmod(to, perm) == -1) {
warn("%s", to);
return (-1);
}
return (0);
} else if (errno != EXDEV) {
warn("failed to access temp RCS output file");
return (-1);
}
if ((chmod(to, S_IWUSR) == -1) && !(to_flags & RCS_CREATE)) {
warnx("chmod(%s, 0%o) failed", to, S_IWUSR);
return (-1);
}
/* different filesystem, have to copy the file */
if ((src = fopen(from, "r")) == NULL) {
warn("%s", from);
return (-1);
}
if ((dst = fopen(to, "w")) == NULL) {
warn("%s", to);
(void)fclose(src);
return (-1);
}
if (fchmod(fileno(dst), perm)) {
warn("%s", to);
(void)unlink(to);
(void)fclose(src);
(void)fclose(dst);
return (-1);
}
buf = xmalloc(_MAXBSIZE);
while ((nread = fread(buf, sizeof(char), _MAXBSIZE, src)) != 0) {
if (ferror(src)) {
warnx("failed to read `%s'", from);
(void)unlink(to);
goto out;
}
nwritten = fwrite(buf, sizeof(char), nread, dst);
if (nwritten != nread) {
warnx("failed to write `%s'", to);
(void)unlink(to);
goto out;
}
}
(void)unlink(from);
out:
(void)fclose(src);
(void)fclose(dst);
free(buf);
return (0);
}
/*
* rcs_head_set()
*
* Set the revision number of the head revision for the RCS file <file> to
* <rev>, which must reference a valid revision within the file.
*/
int
rcs_head_set(RCSFILE *file, RCSNUM *rev)
{
if (rcs_findrev(file, rev) == NULL)
return (-1);
if (file->rf_head == NULL)
file->rf_head = rcsnum_alloc();
rcsnum_cpy(rev, file->rf_head, 0);
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_branch_get()
*
* Retrieve the default branch number for the RCS file <file>.
* Returns the number on success. If NULL is returned, then there is no
* default branch for this file.
*/
const RCSNUM *
rcs_branch_get(RCSFILE *file)
{
return (file->rf_branch);
}
/*
* rcs_access_add()
*
* Add the login name <login> to the access list for the RCS file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_access_add(RCSFILE *file, const char *login)
{
struct rcs_access *ap;
/* first look for duplication */
TAILQ_FOREACH(ap, &(file->rf_access), ra_list) {
if (strcmp(ap->ra_name, login) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
ap = xmalloc(sizeof(*ap));
ap->ra_name = xstrdup(login);
TAILQ_INSERT_TAIL(&(file->rf_access), ap, ra_list);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_access_remove()
*
* Remove an entry with login name <login> from the access list of the RCS
* file <file>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_access_remove(RCSFILE *file, const char *login)
{
struct rcs_access *ap;
TAILQ_FOREACH(ap, &(file->rf_access), ra_list)
if (strcmp(ap->ra_name, login) == 0)
break;
if (ap == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_access), ap, ra_list);
free(ap->ra_name);
free(ap);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_add()
*
* Add a symbol to the list of symbols for the RCS file <rfp>. The new symbol
* is named <sym> and is bound to the RCS revision <snum>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_sym_add(RCSFILE *rfp, const char *sym, RCSNUM *snum)
{
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (-1);
}
/* first look for duplication */
TAILQ_FOREACH(symp, &(rfp->rf_symbols), rs_list) {
if (strcmp(symp->rs_name, sym) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
symp = xmalloc(sizeof(*symp));
symp->rs_name = xstrdup(sym);
symp->rs_num = rcsnum_alloc();
rcsnum_cpy(snum, symp->rs_num, 0);
TAILQ_INSERT_HEAD(&(rfp->rf_symbols), symp, rs_list);
/* not synced anymore */
rfp->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_remove()
*
* Remove the symbol with name <sym> from the symbol list for the RCS file
* <file>. If no such symbol is found, the call fails and returns with an
* error.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_sym_remove(RCSFILE *file, const char *sym)
{
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (-1);
}
TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
if (strcmp(symp->rs_name, sym) == 0)
break;
if (symp == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_symbols), symp, rs_list);
free(symp->rs_name);
rcsnum_free(symp->rs_num);
free(symp);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_sym_getrev()
*
* Retrieve the RCS revision number associated with the symbol <sym> for the
* RCS file <file>. The returned value is a dynamically-allocated copy and
* should be freed by the caller once they are done with it.
* Returns the RCSNUM on success, or NULL on failure.
*/
RCSNUM *
rcs_sym_getrev(RCSFILE *file, const char *sym)
{
RCSNUM *num;
struct rcs_sym *symp;
if (!rcs_sym_check(sym)) {
rcs_errno = RCS_ERR_BADSYM;
return (NULL);
}
num = NULL;
TAILQ_FOREACH(symp, &(file->rf_symbols), rs_list)
if (strcmp(symp->rs_name, sym) == 0)
break;
if (symp == NULL) {
rcs_errno = RCS_ERR_NOENT;
} else {
num = rcsnum_alloc();
rcsnum_cpy(symp->rs_num, num, 0);
}
return (num);
}
/*
* rcs_sym_check()
*
* Check the RCS symbol name <sym> for any unsupported characters.
* Returns 1 if the tag is correct, 0 if it isn't valid.
*/
int
rcs_sym_check(const char *sym)
{
int ret;
const unsigned char *cp;
ret = 1;
cp = sym;
if (!isalpha(*cp++))
return (0);
for (; *cp != '\0'; cp++)
if (!isgraph(*cp) || (strchr(rcs_sym_invch, *cp) != NULL)) {
ret = 0;
break;
}
return (ret);
}
/*
* rcs_lock_getmode()
*
* Retrieve the locking mode of the RCS file <file>.
*/
int
rcs_lock_getmode(RCSFILE *file)
{
return (file->rf_flags & RCS_SLOCK) ? RCS_LOCK_STRICT : RCS_LOCK_LOOSE;
}
/*
* rcs_lock_setmode()
*
* Set the locking mode of the RCS file <file> to <mode>, which must either
* be RCS_LOCK_LOOSE or RCS_LOCK_STRICT.
* Returns the previous mode on success, or -1 on failure.
*/
int
rcs_lock_setmode(RCSFILE *file, int mode)
{
int pmode;
pmode = rcs_lock_getmode(file);
if (mode == RCS_LOCK_STRICT)
file->rf_flags |= RCS_SLOCK;
else if (mode == RCS_LOCK_LOOSE)
file->rf_flags &= ~RCS_SLOCK;
else
errx(1, "rcs_lock_setmode: invalid mode `%d'", mode);
file->rf_flags &= ~RCS_SYNCED;
return (pmode);
}
/*
* rcs_lock_add()
*
* Add an RCS lock for the user <user> on revision <rev>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_lock_add(RCSFILE *file, const char *user, RCSNUM *rev)
{
struct rcs_lock *lkp;
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(file, rev)) == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
/* first look for duplication */
TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
if (strcmp(lkp->rl_name, user) == 0 &&
rcsnum_cmp(rev, lkp->rl_num, 0) == 0) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
lkp = xmalloc(sizeof(*lkp));
lkp->rl_name = xstrdup(user);
lkp->rl_num = rcsnum_alloc();
rcsnum_cpy(rev, lkp->rl_num, 0);
free(rdp->rd_locker);
rdp->rd_locker = xstrdup(user);
TAILQ_INSERT_TAIL(&(file->rf_locks), lkp, rl_list);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_lock_remove()
*
* Remove the RCS lock on revision <rev>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_lock_remove(RCSFILE *file, const char *user, RCSNUM *rev)
{
struct rcs_lock *lkp;
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(file, rev)) == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_FOREACH(lkp, &(file->rf_locks), rl_list) {
if (strcmp(lkp->rl_name, user) == 0 &&
rcsnum_cmp(lkp->rl_num, rev, 0) == 0)
break;
}
if (lkp == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
TAILQ_REMOVE(&(file->rf_locks), lkp, rl_list);
rcsnum_free(lkp->rl_num);
free(lkp->rl_name);
free(lkp);
free(rdp->rd_locker);
rdp->rd_locker = NULL;
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_desc_set()
*
* Set the description for the RCS file <file>.
*/
void
rcs_desc_set(RCSFILE *file, const char *desc)
{
char *tmp;
tmp = xstrdup(desc);
free(file->rf_desc);
file->rf_desc = tmp;
file->rf_flags &= ~RCS_SYNCED;
}
/*
* rcs_comment_set()
*
* Set the comment leader for the RCS file <file>.
*/
void
rcs_comment_set(RCSFILE *file, const char *comment)
{
char *tmp;
tmp = xstrdup(comment);
free(file->rf_comment);
file->rf_comment = tmp;
file->rf_flags &= ~RCS_SYNCED;
}
int
rcs_patch_lines(struct rcs_lines *dlines, struct rcs_lines *plines)
{
char op, *ep;
struct rcs_line *lp, *dlp, *ndlp;
int i, lineno, nbln;
u_char tmp;
dlp = TAILQ_FIRST(&(dlines->l_lines));
lp = TAILQ_FIRST(&(plines->l_lines));
/* skip first bogus line */
for (lp = TAILQ_NEXT(lp, l_list); lp != NULL;
lp = TAILQ_NEXT(lp, l_list)) {
if (lp->l_len < 2)
errx(1, "line too short, RCS patch seems broken");
op = *(lp->l_line);
/* NUL-terminate line buffer for strtol() safety. */
tmp = lp->l_line[lp->l_len - 1];
lp->l_line[lp->l_len - 1] = '\0';
lineno = (int)strtol((lp->l_line + 1), &ep, 10);
if (lineno > dlines->l_nblines || lineno < 0 ||
*ep != ' ')
errx(1, "invalid line specification in RCS patch");
ep++;
nbln = (int)strtol(ep, &ep, 10);
/* Restore the last byte of the buffer */
lp->l_line[lp->l_len - 1] = tmp;
if (nbln < 0)
errx(1,
"invalid line number specification in RCS patch");
/* find the appropriate line */
for (;;) {
if (dlp == NULL)
break;
if (dlp->l_lineno == lineno)
break;
if (dlp->l_lineno > lineno) {
dlp = TAILQ_PREV(dlp, tqh, l_list);
} else if (dlp->l_lineno < lineno) {
if (((ndlp = TAILQ_NEXT(dlp, l_list)) == NULL) ||
ndlp->l_lineno > lineno)
break;
dlp = ndlp;
}
}
if (dlp == NULL)
errx(1, "can't find referenced line in RCS patch");
if (op == 'd') {
for (i = 0; (i < nbln) && (dlp != NULL); i++) {
ndlp = TAILQ_NEXT(dlp, l_list);
TAILQ_REMOVE(&(dlines->l_lines), dlp, l_list);
free(dlp);
dlp = ndlp;
/* last line is gone - reset dlp */
if (dlp == NULL) {
ndlp = TAILQ_LAST(&(dlines->l_lines),
tqh);
dlp = ndlp;
}
}
} else if (op == 'a') {
for (i = 0; i < nbln; i++) {
ndlp = lp;
lp = TAILQ_NEXT(lp, l_list);
if (lp == NULL)
errx(1, "truncated RCS patch");
TAILQ_REMOVE(&(plines->l_lines), lp, l_list);
TAILQ_INSERT_AFTER(&(dlines->l_lines), dlp,
lp, l_list);
dlp = lp;
/* we don't want lookup to block on those */
lp->l_lineno = lineno;
lp = ndlp;
}
} else
errx(1, "unknown RCS patch operation `%c'", op);
/* last line of the patch, done */
if (lp->l_lineno == plines->l_nblines)
break;
}
/* once we're done patching, rebuild the line numbers */
lineno = 0;
TAILQ_FOREACH(lp, &(dlines->l_lines), l_list)
lp->l_lineno = lineno++;
dlines->l_nblines = lineno - 1;
return (0);
}
/*
* rcs_getrev()
*
* Get the whole contents of revision <rev> from the RCSFILE <rfp>. The
* returned buffer is dynamically allocated and should be released using
* buf_free() once the caller is done using it.
*/
BUF *
rcs_getrev(RCSFILE *rfp, RCSNUM *frev)
{
u_int i, numlen;
int isbranch, lookonbranch, found;
size_t dlen, plen, len;
RCSNUM *crev, *rev, *brev;
BUF *rbuf;
struct rcs_delta *rdp = NULL;
struct rcs_branch *rb;
u_char *data, *patch;
if (rfp->rf_head == NULL)
return (NULL);
if (frev == RCS_HEAD_REV)
rev = rfp->rf_head;
else
rev = frev;
/* XXX rcsnum_cmp() */
for (i = 0; i < rfp->rf_head->rn_len; i++) {
if (rfp->rf_head->rn_id[i] < rev->rn_id[i]) {
rcs_errno = RCS_ERR_NOENT;
return (NULL);
}
}
/* No matter what, we'll need everything parsed up until the description
so go for it. */
if (rcsparse_deltas(rfp, NULL))
return (NULL);
rdp = rcs_findrev(rfp, rfp->rf_head);
if (rdp == NULL) {
warnx("failed to get RCS HEAD revision");
return (NULL);
}
if (rdp->rd_tlen == 0)
if (rcsparse_deltatexts(rfp, rfp->rf_head))
return (NULL);
len = rdp->rd_tlen;
if (len == 0) {
rbuf = buf_alloc(1);
buf_empty(rbuf);
return (rbuf);
}
rbuf = buf_alloc(len);
buf_append(rbuf, rdp->rd_text, len);
isbranch = 0;
brev = NULL;
/*
* If a branch was passed, get the latest revision on it.
*/
if (RCSNUM_ISBRANCH(rev)) {
brev = rev;
rdp = rcs_findrev(rfp, rev);
if (rdp == NULL) {
buf_free(rbuf);
return (NULL);
}
rev = rdp->rd_num;
} else {
if (RCSNUM_ISBRANCHREV(rev)) {
brev = rcsnum_revtobr(rev);
isbranch = 1;
}
}
lookonbranch = 0;
crev = NULL;
/* Apply patches backwards to get the right version.
*/
do {
found = 0;
if (rcsnum_cmp(rfp->rf_head, rev, 0) == 0)
break;
if (isbranch == 1 && rdp->rd_num->rn_len < rev->rn_len &&
!TAILQ_EMPTY(&(rdp->rd_branches)))
lookonbranch = 1;
if (isbranch && lookonbranch == 1) {
lookonbranch = 0;
TAILQ_FOREACH(rb, &(rdp->rd_branches), rb_list) {
/* XXX rcsnum_cmp() is totally broken for
* this purpose.
*/
numlen = MINIMUM(brev->rn_len,
rb->rb_num->rn_len - 1);
for (i = 0; i < numlen; i++) {
if (rb->rb_num->rn_id[i] !=
brev->rn_id[i])
break;
}
if (i == numlen) {
crev = rb->rb_num;
found = 1;
break;
}
}
if (found == 0)
crev = rdp->rd_next;
} else {
crev = rdp->rd_next;
}
rdp = rcs_findrev(rfp, crev);
if (rdp == NULL) {
buf_free(rbuf);
return (NULL);
}
plen = rdp->rd_tlen;
dlen = buf_len(rbuf);
patch = rdp->rd_text;
data = buf_release(rbuf);
/* check if we have parsed this rev's deltatext */
if (rdp->rd_tlen == 0)
if (rcsparse_deltatexts(rfp, rdp->rd_num))
return (NULL);
rbuf = rcs_patchfile(data, dlen, patch, plen, rcs_patch_lines);
free(data);
if (rbuf == NULL)
break;
} while (rcsnum_cmp(crev, rev, 0) != 0);
return (rbuf);
}
void
rcs_delta_stats(struct rcs_delta *rdp, int *ladded, int *lremoved)
{
struct rcs_lines *plines;
struct rcs_line *lp;
int added, i, nbln, removed;
char op, *ep;
u_char tmp;
added = removed = 0;
plines = rcs_splitlines(rdp->rd_text, rdp->rd_tlen);
lp = TAILQ_FIRST(&(plines->l_lines));
/* skip first bogus line */
for (lp = TAILQ_NEXT(lp, l_list); lp != NULL;
lp = TAILQ_NEXT(lp, l_list)) {
if (lp->l_len < 2)
errx(1,
"line too short, RCS patch seems broken");
op = *(lp->l_line);
/* NUL-terminate line buffer for strtol() safety. */
tmp = lp->l_line[lp->l_len - 1];
lp->l_line[lp->l_len - 1] = '\0';
(void)strtol((lp->l_line + 1), &ep, 10);
ep++;
nbln = (int)strtol(ep, &ep, 10);
/* Restore the last byte of the buffer */
lp->l_line[lp->l_len - 1] = tmp;
if (nbln < 0)
errx(1, "invalid line number specification "
"in RCS patch");
if (op == 'a') {
added += nbln;
for (i = 0; i < nbln; i++) {
lp = TAILQ_NEXT(lp, l_list);
if (lp == NULL)
errx(1, "truncated RCS patch");
}
} else if (op == 'd')
removed += nbln;
else
errx(1, "unknown RCS patch operation '%c'", op);
}
rcs_freelines(plines);
*ladded = added;
*lremoved = removed;
}
/*
* rcs_rev_add()
*
* Add a revision to the RCS file <rf>. The new revision's number can be
* specified in <rev> (which can also be RCS_HEAD_REV, in which case the
* new revision will have a number equal to the previous head revision plus
* one). The <msg> argument specifies the log message for that revision, and
* <date> specifies the revision's date (a value of -1 is
* equivalent to using the current time).
* If <author> is NULL, set the author for this revision to the current user.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date,
const char *author)
{
time_t now;
struct passwd *pw;
struct rcs_delta *ordp, *rdp;
if (rev == RCS_HEAD_REV) {
if (rf->rf_flags & RCS_CREATE) {
if ((rev = rcsnum_parse(RCS_HEAD_INIT)) == NULL)
return (-1);
rf->rf_head = rev;
} else {
rev = rcsnum_inc(rf->rf_head);
}
} else {
if ((rdp = rcs_findrev(rf, rev)) != NULL) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
rdp = xcalloc(1, sizeof(*rdp));
TAILQ_INIT(&(rdp->rd_branches));
rdp->rd_num = rcsnum_alloc();
rcsnum_cpy(rev, rdp->rd_num, 0);
rdp->rd_next = rcsnum_alloc();
if (!(rf->rf_flags & RCS_CREATE)) {
/* next should point to the previous HEAD */
ordp = TAILQ_FIRST(&(rf->rf_delta));
rcsnum_cpy(ordp->rd_num, rdp->rd_next, 0);
}
if (!author && !(author = getlogin())) {
if (!(pw = getpwuid(getuid())))
errx(1, "getpwuid failed");
author = pw->pw_name;
}
rdp->rd_author = xstrdup(author);
rdp->rd_state = xstrdup(RCS_STATE_EXP);
rdp->rd_log = xstrdup(msg);
if (date != (time_t)(-1))
now = date;
else
time(&now);
gmtime_r(&now, &(rdp->rd_date));
TAILQ_INSERT_HEAD(&(rf->rf_delta), rdp, rd_list);
rf->rf_ndelta++;
/* not synced anymore */
rf->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_rev_remove()
*
* Remove the revision whose number is <rev> from the RCS file <rf>.
*/
int
rcs_rev_remove(RCSFILE *rf, RCSNUM *rev)
{
char *path_tmp1, *path_tmp2;
struct rcs_delta *rdp, *prevrdp, *nextrdp;
BUF *newdeltatext, *nextbuf, *prevbuf, *newdiff;
nextrdp = prevrdp = NULL;
path_tmp1 = path_tmp2 = NULL;
if (rev == RCS_HEAD_REV)
rev = rf->rf_head;
/* do we actually have that revision? */
if ((rdp = rcs_findrev(rf, rev)) == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (-1);
}
/*
* This is confusing, the previous delta is next in the TAILQ list.
* the next delta is the previous one in the TAILQ list.
*
* When the HEAD revision got specified, nextrdp will be NULL.
* When the first revision got specified, prevrdp will be NULL.
*/
prevrdp = (struct rcs_delta *)TAILQ_NEXT(rdp, rd_list);
nextrdp = (struct rcs_delta *)TAILQ_PREV(rdp, tqh, rd_list);
newdeltatext = prevbuf = nextbuf = NULL;
if (prevrdp != NULL) {
if ((prevbuf = rcs_getrev(rf, prevrdp->rd_num)) == NULL)
errx(1, "error getting revision");
}
if (prevrdp != NULL && nextrdp != NULL) {
if ((nextbuf = rcs_getrev(rf, nextrdp->rd_num)) == NULL)
errx(1, "error getting revision");
newdiff = buf_alloc(64);
/* calculate new diff */
(void)xasprintf(&path_tmp1, "%s/diff1.XXXXXXXXXX", rcs_tmpdir);
buf_write_stmp(nextbuf, path_tmp1);
buf_free(nextbuf);
(void)xasprintf(&path_tmp2, "%s/diff2.XXXXXXXXXX", rcs_tmpdir);
buf_write_stmp(prevbuf, path_tmp2);
buf_free(prevbuf);
diff_format = D_RCSDIFF;
if (diffreg(path_tmp1, path_tmp2, newdiff, D_FORCEASCII) == D_ERROR)
errx(1, "diffreg failed");
newdeltatext = newdiff;
} else if (nextrdp == NULL && prevrdp != NULL) {
newdeltatext = prevbuf;
}
if (newdeltatext != NULL) {
if (rcs_deltatext_set(rf, prevrdp->rd_num, newdeltatext) < 0)
errx(1, "error setting new deltatext");
}
TAILQ_REMOVE(&(rf->rf_delta), rdp, rd_list);
/* update pointers */
if (prevrdp != NULL && nextrdp != NULL) {
rcsnum_cpy(prevrdp->rd_num, nextrdp->rd_next, 0);
} else if (prevrdp != NULL) {
if (rcs_head_set(rf, prevrdp->rd_num) < 0)
errx(1, "rcs_head_set failed");
} else if (nextrdp != NULL) {
rcsnum_free(nextrdp->rd_next);
nextrdp->rd_next = rcsnum_alloc();
} else {
rcsnum_free(rf->rf_head);
rf->rf_head = NULL;
}
rf->rf_ndelta--;
rf->rf_flags &= ~RCS_SYNCED;
rcs_freedelta(rdp);
free(path_tmp1);
free(path_tmp2);
return (0);
}
/*
* rcs_findrev()
*
* Find a specific revision's delta entry in the tree of the RCS file <rfp>.
* The revision number is given in <rev>.
*
* If the given revision is a branch number, we translate it into the latest
* revision on the branch.
*
* Returns a pointer to the delta on success, or NULL on failure.
*/
struct rcs_delta *
rcs_findrev(RCSFILE *rfp, RCSNUM *rev)
{
u_int cmplen;
struct rcs_delta *rdp;
RCSNUM *brev, *frev;
/*
* We need to do more parsing if the last revision in the linked list
* is greater than the requested revision.
*/
rdp = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
if (rdp == NULL ||
rcsnum_cmp(rdp->rd_num, rev, 0) == -1) {
if (rcsparse_deltas(rfp, rev))
return (NULL);
}
/*
* Translate a branch into the latest revision on the branch itself.
*/
if (RCSNUM_ISBRANCH(rev)) {
brev = rcsnum_brtorev(rev);
frev = brev;
for (;;) {
rdp = rcs_findrev(rfp, frev);
if (rdp == NULL)
return (NULL);
if (rdp->rd_next->rn_len == 0)
break;
frev = rdp->rd_next;
}
rcsnum_free(brev);
return (rdp);
}
cmplen = rev->rn_len;
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
if (rcsnum_cmp(rdp->rd_num, rev, cmplen) == 0)
return (rdp);
}
return (NULL);
}
/*
* rcs_kwexp_set()
*
* Set the keyword expansion mode to use on the RCS file <file> to <mode>.
*/
void
rcs_kwexp_set(RCSFILE *file, int mode)
{
int i;
char *tmp, buf[8] = "";
if (RCS_KWEXP_INVAL(mode))
return;
i = 0;
if (mode == RCS_KWEXP_NONE)
buf[0] = 'b';
else if (mode == RCS_KWEXP_OLD)
buf[0] = 'o';
else {
if (mode & RCS_KWEXP_NAME)
buf[i++] = 'k';
if (mode & RCS_KWEXP_VAL)
buf[i++] = 'v';
if (mode & RCS_KWEXP_LKR)
buf[i++] = 'l';
}
tmp = xstrdup(buf);
free(file->rf_expand);
file->rf_expand = tmp;
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
}
/*
* rcs_kwexp_get()
*
* Retrieve the keyword expansion mode to be used for the RCS file <file>.
*/
int
rcs_kwexp_get(RCSFILE *file)
{
if (file->rf_expand == NULL)
return (RCS_KWEXP_DEFAULT);
return (rcs_kflag_get(file->rf_expand));
}
/*
* rcs_kflag_get()
*
* Get the keyword expansion mode from a set of character flags given in
* <flags> and return the appropriate flag mask. In case of an error, the
* returned mask will have the RCS_KWEXP_ERR bit set to 1.
*/
int
rcs_kflag_get(const char *flags)
{
int fl;
size_t len;
const char *fp;
if (flags == NULL || !(len = strlen(flags)))
return (RCS_KWEXP_ERR);
fl = 0;
for (fp = flags; *fp != '\0'; fp++) {
if (*fp == 'k')
fl |= RCS_KWEXP_NAME;
else if (*fp == 'v')
fl |= RCS_KWEXP_VAL;
else if (*fp == 'l')
fl |= RCS_KWEXP_LKR;
else if (*fp == 'o') {
if (len != 1)
fl |= RCS_KWEXP_ERR;
fl |= RCS_KWEXP_OLD;
} else if (*fp == 'b') {
if (len != 1)
fl |= RCS_KWEXP_ERR;
fl |= RCS_KWEXP_NONE;
} else /* unknown letter */
fl |= RCS_KWEXP_ERR;
}
return (fl);
}
/*
* rcs_freedelta()
*
* Free the contents of a delta structure.
*/
static void
rcs_freedelta(struct rcs_delta *rdp)
{
struct rcs_branch *rb;
rcsnum_free(rdp->rd_num);
rcsnum_free(rdp->rd_next);
free(rdp->rd_author);
free(rdp->rd_locker);
free(rdp->rd_state);
free(rdp->rd_log);
free(rdp->rd_text);
while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
rcsnum_free(rb->rb_num);
free(rb);
}
free(rdp);
}
/*
* rcs_strprint()
*
* Output an RCS string <str> of size <slen> to the stream <stream>. Any
* '@' characters are escaped. Otherwise, the string can contain arbitrary
* binary data.
*/
static void
rcs_strprint(const u_char *str, size_t slen, FILE *stream)
{
const u_char *ap, *ep, *sp;
if (slen == 0)
return;
ep = str + slen - 1;
for (sp = str; sp <= ep;) {
ap = memchr(sp, '@', ep - sp);
if (ap == NULL)
ap = ep;
(void)fwrite(sp, sizeof(u_char), ap - sp + 1, stream);
if (*ap == '@')
putc('@', stream);
sp = ap + 1;
}
}
/*
* rcs_expand_keywords()
*
* Return expansion any RCS keywords in <data>
*
* On error, return NULL.
*/
static BUF *
rcs_expand_keywords(char *rcsfile_in, struct rcs_delta *rdp, BUF *bp, int mode)
{
BUF *newbuf;
u_char *c, *kw, *fin;
char buf[256], *tmpf, resolved[PATH_MAX], *rcsfile;
u_char *line, *line2;
u_int i, j;
int kwtype;
int found;
struct tm tb;
tb = rdp->rd_date;
if (timezone_flag != NULL)
rcs_set_tz(timezone_flag, rdp, &tb);
if (realpath(rcsfile_in, resolved) == NULL)
rcsfile = rcsfile_in;
else
rcsfile = resolved;
newbuf = buf_alloc(buf_len(bp));
/*
* Keyword formats:
* $Keyword$
* $Keyword: value$
*/
c = buf_get(bp);
fin = c + buf_len(bp);
/* Copying to newbuf is deferred until the first keyword. */
found = 0;
while (c < fin) {
kw = memchr(c, '$', fin - c);
if (kw == NULL)
break;
++kw;
if (found) {
/* Copy everything up to and including the $. */
buf_append(newbuf, c, kw - c);
}
c = kw;
/* c points after the $ now. */
if (c == fin)
break;
if (!isalpha(*c)) /* all valid keywords start with a letter */
continue;
for (i = 0; i < RCS_NKWORDS; ++i) {
size_t kwlen;
kwlen = strlen(rcs_expkw[i].kw_str);
/*
* kwlen must be less than clen since clen includes
* either a terminating `$' or a `:'.
*/
if (c + kwlen < fin &&
memcmp(c , rcs_expkw[i].kw_str, kwlen) == 0 &&
(c[kwlen] == '$' || c[kwlen] == ':')) {
c += kwlen;
break;
}
}
if (i == RCS_NKWORDS)
continue;
kwtype = rcs_expkw[i].kw_type;
/*
* If the next character is ':' we need to look for an '$'
* before the end of the line to be sure it is in fact a
* keyword.
*/
if (*c == ':') {
for (; c < fin; ++c) {
if (*c == '$' || *c == '\n')
break;
}
if (*c != '$') {
if (found)
buf_append(newbuf, kw, c - kw);
continue;
}
}
++c;
if (!found) {
found = 1;
/* Copy everything up to and including the $. */
buf_append(newbuf, buf_get(bp), kw - buf_get(bp));
}
if (mode & RCS_KWEXP_NAME) {
buf_puts(newbuf, rcs_expkw[i].kw_str);
if (mode & RCS_KWEXP_VAL)
buf_puts(newbuf, ": ");
}
/* Order matters because of RCS_KW_ID and RCS_KW_HEADER. */
if (mode & RCS_KWEXP_VAL) {
if (kwtype & (RCS_KW_RCSFILE|RCS_KW_LOG)) {
if ((kwtype & RCS_KW_FULLPATH) ||
(tmpf = strrchr(rcsfile, '/')) == NULL)
buf_puts(newbuf, rcsfile);
else
buf_puts(newbuf, tmpf + 1);
buf_putc(newbuf, ' ');
}
if (kwtype & RCS_KW_REVISION) {
rcsnum_tostr(rdp->rd_num, buf, sizeof(buf));
buf_puts(newbuf, buf);
buf_putc(newbuf, ' ');
}
if (kwtype & RCS_KW_DATE) {
strftime(buf, sizeof(buf),
"%Y/%m/%d %H:%M:%S ", &tb);
buf_puts(newbuf, buf);
}
if (kwtype & RCS_KW_AUTHOR) {
buf_puts(newbuf, rdp->rd_author);
buf_putc(newbuf, ' ');
}
if (kwtype & RCS_KW_STATE) {
buf_puts(newbuf, rdp->rd_state);
buf_putc(newbuf, ' ');
}
/* Order does not matter anymore below. */
if (kwtype & RCS_KW_SOURCE) {
buf_puts(newbuf, rcsfile);
buf_putc(newbuf, ' ');
}
if (kwtype & RCS_KW_MDOCDATE) {
strftime(buf, sizeof(buf), "%B", &tb);
buf_puts(newbuf, buf);
/* Only one blank before single-digit day. */
snprintf(buf, sizeof(buf), " %d", tb.tm_mday);
buf_puts(newbuf, buf);
strftime(buf, sizeof(buf), " %Y ", &tb);
buf_puts(newbuf, buf);
}
if (kwtype & RCS_KW_NAME)
buf_putc(newbuf, ' ');
if ((kwtype & RCS_KW_LOCKER)) {
if (rdp->rd_locker) {
buf_puts(newbuf, rdp->rd_locker);
buf_putc(newbuf, ' ');
}
}
}
/* End the expansion. */
if (mode & RCS_KWEXP_NAME)
buf_putc(newbuf, '$');
if (kwtype & RCS_KW_LOG) {
line = memrchr(buf_get(bp), '\n', kw - buf_get(bp) - 1);
if (line == NULL)
line = buf_get(bp);
else
++line;
line2 = kw - 1;
while (line2 > line && line2[-1] == ' ')
--line2;
buf_putc(newbuf, '\n');
buf_append(newbuf, line, kw - 1 - line);
buf_puts(newbuf, "Revision ");
rcsnum_tostr(rdp->rd_num, buf, sizeof(buf));
buf_puts(newbuf, buf);
buf_puts(newbuf, " ");
strftime(buf, sizeof(buf), "%Y/%m/%d %H:%M:%S", &tb);
buf_puts(newbuf, buf);
buf_puts(newbuf, " ");
buf_puts(newbuf, rdp->rd_author);
buf_putc(newbuf, '\n');
for (i = 0; rdp->rd_log[i]; i += j) {
j = strcspn(rdp->rd_log + i, "\n");
if (j == 0)
buf_append(newbuf, line, line2 - line);
else
buf_append(newbuf, line, kw - 1 - line);
if (rdp->rd_log[i + j])
++j;
buf_append(newbuf, rdp->rd_log + i, j);
}
if (i > 0 && rdp->rd_log[i - 1] != '\n')
buf_putc(newbuf, '\n');
buf_append(newbuf, line, line2 - line);
for (j = 0; c + j < fin; ++j) {
if (c[j] != ' ')
break;
}
if (c + j == fin || c[j] == '\n')
c += j;
}
}
if (found) {
buf_append(newbuf, c, fin - c);
buf_free(bp);
return (newbuf);
} else {
buf_free(newbuf);
return (bp);
}
}
/*
* rcs_deltatext_set()
*
* Set deltatext for <rev> in RCS file <rfp> to <dtext>
* Returns -1 on error, 0 on success.
*/
int
rcs_deltatext_set(RCSFILE *rfp, RCSNUM *rev, BUF *bp)
{
size_t len;
u_char *dtext;
struct rcs_delta *rdp;
/* Write operations require full parsing */
if (rcsparse_deltatexts(rfp, NULL))
return (-1);
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
free(rdp->rd_text);
len = buf_len(bp);
dtext = buf_release(bp);
bp = NULL;
if (len != 0) {
rdp->rd_text = xmalloc(len);
rdp->rd_tlen = len;
(void)memcpy(rdp->rd_text, dtext, len);
} else {
rdp->rd_text = NULL;
rdp->rd_tlen = 0;
}
free(dtext);
return (0);
}
/*
* rcs_rev_setlog()
*
* Sets the log message of revision <rev> to <logtext>.
*/
int
rcs_rev_setlog(RCSFILE *rfp, RCSNUM *rev, const char *logtext)
{
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
free(rdp->rd_log);
rdp->rd_log = xstrdup(logtext);
rfp->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_rev_getdate()
*
* Get the date corresponding to a given revision.
* Returns the date on success, -1 on failure.
*/
time_t
rcs_rev_getdate(RCSFILE *rfp, RCSNUM *rev)
{
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
return (mktime(&rdp->rd_date));
}
/*
* rcs_state_set()
*
* Sets the state of revision <rev> to <state>
* NOTE: default state is 'Exp'. States may not contain spaces.
*
* Returns -1 on failure, 0 on success.
*/
int
rcs_state_set(RCSFILE *rfp, RCSNUM *rev, const char *state)
{
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
free(rdp->rd_state);
rdp->rd_state = xstrdup(state);
rfp->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_state_check()
*
* Check if string <state> is valid.
*
* Returns 0 if the string is valid, -1 otherwise.
*/
int
rcs_state_check(const char *state)
{
int ret;
const unsigned char *cp;
ret = 0;
cp = state;
if (!isalpha(*cp++))
return (-1);
for (; *cp != '\0'; cp++)
if (!isgraph(*cp) || (strchr(rcs_state_invch, *cp) != NULL)) {
ret = -1;
break;
}
return (ret);
}
/*
* rcs_kwexp_buf()
*
* Do keyword expansion on a buffer if necessary
*
*/
BUF *
rcs_kwexp_buf(BUF *bp, RCSFILE *rf, RCSNUM *rev)
{
struct rcs_delta *rdp;
int expmode;
/*
* Do keyword expansion if required.
*/
expmode = rcs_kwexp_get(rf);
if (!(expmode & RCS_KWEXP_NONE)) {
if ((rdp = rcs_findrev(rf, rev)) == NULL)
errx(1, "could not fetch revision");
return (rcs_expand_keywords(rf->rf_path, rdp, bp, expmode));
}
return (bp);
}
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