OpenBSD-4.6/usr.bin/rcs/rcs.c
/* $OpenBSD: rcs.c,v 1.54 2009/04/14 21:16:40 jj 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/stat.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <libgen.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 "rcsprog.h"
#include "rcsutil.h"
#include "xmalloc.h"
#define RCS_BUFSIZE 16384
#define RCS_BUFEXTSIZE 8192
#define RCS_KWEXP_SIZE 1024
/* RCS token types */
#define RCS_TOK_ERR -1
#define RCS_TOK_EOF 0
#define RCS_TOK_NUM 1
#define RCS_TOK_ID 2
#define RCS_TOK_STRING 3
#define RCS_TOK_SCOLON 4
#define RCS_TOK_COLON 5
#define RCS_TOK_HEAD 8
#define RCS_TOK_BRANCH 9
#define RCS_TOK_ACCESS 10
#define RCS_TOK_SYMBOLS 11
#define RCS_TOK_LOCKS 12
#define RCS_TOK_COMMENT 13
#define RCS_TOK_EXPAND 14
#define RCS_TOK_DATE 15
#define RCS_TOK_AUTHOR 16
#define RCS_TOK_STATE 17
#define RCS_TOK_NEXT 18
#define RCS_TOK_BRANCHES 19
#define RCS_TOK_DESC 20
#define RCS_TOK_LOG 21
#define RCS_TOK_TEXT 22
#define RCS_TOK_STRICT 23
#define RCS_TOK_COMMITID 24
#define RCS_ISKEY(t) (((t) >= RCS_TOK_HEAD) && ((t) <= RCS_TOK_BRANCHES))
#define RCS_NOSCOL 0x01 /* no terminating semi-colon */
#define RCS_VOPT 0x02 /* value is optional */
/* opaque parse data */
struct rcs_pdata {
u_int rp_lines;
char *rp_buf;
size_t rp_blen;
char *rp_bufend;
size_t rp_tlen;
/* pushback token buffer */
char rp_ptok[128];
int rp_pttype; /* token type, RCS_TOK_ERR if no token */
FILE *rp_file;
};
#define RCS_TOKSTR(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_buf
#define RCS_TOKLEN(rfp) ((struct rcs_pdata *)rfp->rf_pdata)->rp_tlen
/* invalid characters in RCS symbol names */
static const char rcs_sym_invch[] = RCS_SYM_INVALCHAR;
/* comment leaders, depending on the file's suffix */
static const struct rcs_comment {
const char *rc_suffix;
const char *rc_cstr;
} rcs_comments[] = {
{ "1", ".\\\" " },
{ "2", ".\\\" " },
{ "3", ".\\\" " },
{ "4", ".\\\" " },
{ "5", ".\\\" " },
{ "6", ".\\\" " },
{ "7", ".\\\" " },
{ "8", ".\\\" " },
{ "9", ".\\\" " },
{ "a", "-- " }, /* Ada */
{ "ada", "-- " },
{ "adb", "-- " },
{ "asm", ";; " }, /* assembler (MS-DOS) */
{ "ads", "-- " }, /* Ada */
{ "bat", ":: " }, /* batch (MS-DOS) */
{ "body", "-- " }, /* Ada */
{ "c", " * " }, /* C */
{ "c++", "// " }, /* C++ */
{ "cc", "// " },
{ "cpp", "// " },
{ "cxx", "// " },
{ "m", "// " }, /* Objective-C */
{ "cl", ";;; " }, /* Common Lisp */
{ "cmd", ":: " }, /* command (OS/2) */
{ "cmf", "c " }, /* CM Fortran */
{ "csh", "# " }, /* shell */
{ "e", "# " }, /* efl */
{ "epsf", "% " }, /* encapsulated postscript */
{ "epsi", "% " }, /* encapsulated postscript */
{ "el", "; " }, /* Emacs Lisp */
{ "f", "c " }, /* Fortran */
{ "for", "c " },
{ "h", " * " }, /* C-header */
{ "hh", "// " }, /* C++ header */
{ "hpp", "// " },
{ "hxx", "// " },
{ "in", "# " }, /* for Makefile.in */
{ "l", " * " }, /* lex */
{ "mac", ";; " }, /* macro (DEC-10, MS-DOS, PDP-11, VMS, etc) */
{ "mak", "# " }, /* makefile, e.g. Visual C++ */
{ "me", ".\\\" " }, /* me-macros t/nroff */
{ "ml", "; " }, /* mocklisp */
{ "mm", ".\\\" " }, /* mm-macros t/nroff */
{ "ms", ".\\\" " }, /* ms-macros t/nroff */
{ "man", ".\\\" " }, /* man-macros t/nroff */
{ "p", " * " }, /* pascal */
{ "pas", " * " },
{ "pl", "# " }, /* Perl (conflict with Prolog) */
{ "pm", "# " }, /* Perl module */
{ "ps", "% " }, /* postscript */
{ "psw", "% " }, /* postscript wrap */
{ "pswm", "% " }, /* postscript wrap */
{ "r", "# " }, /* ratfor */
{ "rc", " * " }, /* Microsoft Windows resource file */
{ "red", "% " }, /* psl/rlisp */
{ "sh", "# " }, /* shell */
{ "sl", "% " }, /* psl */
{ "spec", "-- " }, /* Ada */
{ "tex", "% " }, /* tex */
{ "y", " * " }, /* yacc */
{ "ye", " * " }, /* yacc-efl */
{ "yr", " * " }, /* yacc-ratfor */
};
struct rcs_kw rcs_expkw[] = {
{ "Author", RCS_KW_AUTHOR },
{ "Date", RCS_KW_DATE },
{ "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 },
};
#define NB_COMTYPES (sizeof(rcs_comments)/sizeof(rcs_comments[0]))
static struct rcs_key {
char rk_str[16];
int rk_id;
int rk_val;
int rk_flags;
} rcs_keys[] = {
{ "access", RCS_TOK_ACCESS, RCS_TOK_ID, RCS_VOPT },
{ "author", RCS_TOK_AUTHOR, RCS_TOK_ID, 0 },
{ "branch", RCS_TOK_BRANCH, RCS_TOK_NUM, RCS_VOPT },
{ "branches", RCS_TOK_BRANCHES, RCS_TOK_NUM, RCS_VOPT },
{ "comment", RCS_TOK_COMMENT, RCS_TOK_STRING, RCS_VOPT },
{ "commitid", RCS_TOK_COMMITID, RCS_TOK_ID, 0 },
{ "date", RCS_TOK_DATE, RCS_TOK_NUM, 0 },
{ "desc", RCS_TOK_DESC, RCS_TOK_STRING, RCS_NOSCOL },
{ "expand", RCS_TOK_EXPAND, RCS_TOK_STRING, RCS_VOPT },
{ "head", RCS_TOK_HEAD, RCS_TOK_NUM, RCS_VOPT },
{ "locks", RCS_TOK_LOCKS, RCS_TOK_ID, 0 },
{ "log", RCS_TOK_LOG, RCS_TOK_STRING, RCS_NOSCOL },
{ "next", RCS_TOK_NEXT, RCS_TOK_NUM, RCS_VOPT },
{ "state", RCS_TOK_STATE, RCS_TOK_ID, RCS_VOPT },
{ "strict", RCS_TOK_STRICT, 0, 0, },
{ "symbols", RCS_TOK_SYMBOLS, 0, 0 },
{ "text", RCS_TOK_TEXT, RCS_TOK_STRING, RCS_NOSCOL },
};
#define RCS_NKEYS (sizeof(rcs_keys)/sizeof(rcs_keys[0]))
static const char *rcs_errstrs[] = {
"No error",
"No such entry",
"Duplicate entry found",
"Bad RCS number",
"Invalid RCS symbol",
"Parse error",
};
#define RCS_NERR (sizeof(rcs_errstrs)/sizeof(rcs_errstrs[0]))
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_parse_init(RCSFILE *);
static int rcs_parse_admin(RCSFILE *);
static int rcs_parse_delta(RCSFILE *);
static void rcs_parse_deltas(RCSFILE *, RCSNUM *);
static int rcs_parse_deltatext(RCSFILE *);
static void rcs_parse_deltatexts(RCSFILE *, RCSNUM *);
static void rcs_parse_desc(RCSFILE *, RCSNUM *);
static int rcs_parse_access(RCSFILE *);
static int rcs_parse_symbols(RCSFILE *);
static int rcs_parse_locks(RCSFILE *);
static int rcs_parse_branches(RCSFILE *, struct rcs_delta *);
static void rcs_freedelta(struct rcs_delta *);
static void rcs_freepdata(struct rcs_pdata *);
static int rcs_gettok(RCSFILE *);
static int rcs_pushtok(RCSFILE *, const char *, int);
static void rcs_growbuf(RCSFILE *);
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;
rfp->rf_fd = fd;
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)) {
rcs_parse_init(rfp);
/* 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);
xfree(rap->ra_name);
xfree(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);
xfree(rsp->rs_name);
xfree(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);
xfree(rlp->rl_name);
xfree(rlp);
}
if (rfp->rf_head != NULL)
rcsnum_free(rfp->rf_head);
if (rfp->rf_branch != NULL)
rcsnum_free(rfp->rf_branch);
if (rfp->rf_path != NULL)
xfree(rfp->rf_path);
if (rfp->rf_comment != NULL)
xfree(rfp->rf_comment);
if (rfp->rf_expand != NULL)
xfree(rfp->rf_expand);
if (rfp->rf_desc != NULL)
xfree(rfp->rf_desc);
if (rfp->rf_pdata != NULL)
rcs_freepdata(rfp->rf_pdata);
xfree(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;
fd = -1;
if (rfp->rf_flags & RCS_SYNCED)
return;
/* Write operations need the whole file parsed */
rcs_parse_deltatexts(rfp, NULL);
(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);
}
rcs_worklist_add(fn, &rcs_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 (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;
if (fn != NULL)
xfree(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;
int ret;
ret = -1;
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);
return (-1);
}
if (fchmod(fileno(dst), perm)) {
warn("%s", to);
(void)unlink(to);
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;
}
}
ret = 0;
(void)fclose(src);
(void)fclose(dst);
(void)unlink(from);
out:
xfree(buf);
return (ret);
}
/*
* rcs_head_get()
*
* Retrieve the revision number of the head revision for the RCS file <file>.
*/
const RCSNUM *
rcs_head_get(RCSFILE *file)
{
return (file->rf_head);
}
/*
* 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_branch_set()
*
* Set the default branch for the RCS file <file> to <bnum>.
* Returns 0 on success, -1 on failure.
*/
int
rcs_branch_set(RCSFILE *file, const RCSNUM *bnum)
{
if (file->rf_branch == NULL)
file->rf_branch = rcsnum_alloc();
rcsnum_cpy(bnum, file->rf_branch, 0);
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* 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);
xfree(ap->ra_name);
xfree(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);
xfree(symp->rs_name);
rcsnum_free(symp->rs_num);
xfree(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 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;
/* 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);
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;
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);
xfree(lkp->rl_name);
xfree(lkp);
/* not synced anymore */
file->rf_flags &= ~RCS_SYNCED;
return (0);
}
/*
* rcs_desc_get()
*
* Retrieve the description for the RCS file <file>.
*/
const char *
rcs_desc_get(RCSFILE *file)
{
return (file->rf_desc);
}
/*
* 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);
if (file->rf_desc != NULL)
xfree(file->rf_desc);
file->rf_desc = tmp;
file->rf_flags &= ~RCS_SYNCED;
}
/*
* rcs_comment_lookup()
*
* Lookup the assumed comment leader based on a file's suffix.
* Returns a pointer to the string on success, or NULL on failure.
*/
const char *
rcs_comment_lookup(const char *filename)
{
int i;
const char *sp;
if ((sp = strrchr(filename, '.')) == NULL) {
rcs_errno = RCS_ERR_NOENT;
return (NULL);
}
sp++;
for (i = 0; i < (int)NB_COMTYPES; i++)
if (strcmp(rcs_comments[i].rc_suffix, sp) == 0)
return (rcs_comments[i].rc_cstr);
return (NULL);
}
/*
* rcs_comment_get()
*
* Retrieve the comment leader for the RCS file <file>.
*/
const char *
rcs_comment_get(RCSFILE *file)
{
return (file->rf_comment);
}
/*
* 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);
if (file->rf_comment != NULL)
xfree(file->rf_comment);
file->rf_comment = tmp;
file->rf_flags &= ~RCS_SYNCED;
}
/*
* rcs_tag_resolve()
*
* Retrieve the revision number corresponding to the tag <tag> for the RCS
* file <file>.
*/
RCSNUM *
rcs_tag_resolve(RCSFILE *file, const char *tag)
{
RCSNUM *num;
if ((num = rcsnum_parse(tag)) == NULL) {
num = rcs_sym_getrev(file, tag);
}
return (num);
}
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, rcs_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);
xfree(dlp);
dlp = ndlp;
/* last line is gone - reset dlp */
if (dlp == NULL) {
ndlp = TAILQ_LAST(&(dlines->l_lines),
rcs_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
* rcs_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. */
rcs_parse_desc(rfp, 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)
rcs_parse_deltatexts(rfp, rfp->rf_head);
len = rdp->rd_tlen;
if (len == 0) {
rbuf = rcs_buf_alloc(1, 0);
rcs_buf_empty(rbuf);
return (rbuf);
}
rbuf = rcs_buf_alloc(len, BUF_AUTOEXT);
rcs_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)
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 = MIN(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) {
rcs_buf_free(rbuf);
return (NULL);
}
plen = rdp->rd_tlen;
dlen = rcs_buf_len(rbuf);
patch = rdp->rd_text;
data = rcs_buf_release(rbuf);
/* check if we have parsed this rev's deltatext */
if (rdp->rd_tlen == 0)
rcs_parse_deltatexts(rfp, rdp->rd_num);
rbuf = rcs_patchfile(data, dlen, patch, plen, rcs_patch_lines);
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, lineno, 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';
lineno = (int)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 <username> is NULL, set the author for this revision to the current user.
* Otherwise, set it to <username>.
* Returns 0 on success, or -1 on failure.
*/
int
rcs_rev_add(RCSFILE *rf, RCSNUM *rev, const char *msg, time_t date,
const char *username)
{
time_t now;
struct passwd *pw;
struct rcs_delta *ordp, *rdp;
uid_t uid;
if (rev == RCS_HEAD_REV) {
if (rf->rf_flags & RCS_CREATE) {
if ((rev = rcsnum_parse(RCS_HEAD_INIT)) == NULL)
return (-1);
rf->rf_head = rcsnum_alloc();
rcsnum_cpy(rev, rf->rf_head, 0);
} else {
rev = rcsnum_inc(rf->rf_head);
}
} else {
if ((rdp = rcs_findrev(rf, rev)) != NULL) {
rcs_errno = RCS_ERR_DUPENT;
return (-1);
}
}
uid = getuid();
if ((pw = getpwuid(uid)) == NULL)
errx(1, "getpwuid failed");
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 (uid == 0)
username = getlogin();
if (username == NULL || *username == '\0')
username = pw->pw_name;
rdp->rd_author = xstrdup(username);
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, rcs_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 = rcs_buf_alloc(64, BUF_AUTOEXT);
/* calculate new diff */
(void)xasprintf(&path_tmp1, "%s/diff1.XXXXXXXXXX", rcs_tmpdir);
rcs_buf_write_stmp(nextbuf, path_tmp1);
rcs_buf_free(nextbuf);
(void)xasprintf(&path_tmp2, "%s/diff2.XXXXXXXXXX", rcs_tmpdir);
rcs_buf_write_stmp(prevbuf, path_tmp2);
rcs_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);
if (path_tmp1 != NULL)
xfree(path_tmp1);
if (path_tmp2 != NULL)
xfree(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) {
rcs_parse_deltas(rfp, rev);
}
/*
* 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);
if (file->rf_expand != NULL)
xfree(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)
{
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;
fl = 0;
len = strlen(flags);
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;
} else /* unknown letter */
fl |= RCS_KWEXP_ERR;
}
return (fl);
}
/*
* rcs_errstr()
*
* Get the error string matching the RCS error code <code>.
*/
const char *
rcs_errstr(int code)
{
const char *esp;
if (code < 0 || (code >= (int)RCS_NERR && code != RCS_ERR_ERRNO))
esp = NULL;
else if (code == RCS_ERR_ERRNO)
esp = strerror(errno);
else
esp = rcs_errstrs[code];
return (esp);
}
/* rcs_parse_deltas()
*
* Parse deltas. If <rev> is not NULL, parse only as far as that
* revision. If <rev> is NULL, parse all deltas.
*/
static void
rcs_parse_deltas(RCSFILE *rfp, RCSNUM *rev)
{
int ret;
struct rcs_delta *enddelta;
if ((rfp->rf_flags & PARSED_DELTAS) || (rfp->rf_flags & RCS_CREATE))
return;
for (;;) {
ret = rcs_parse_delta(rfp);
if (rev != NULL) {
enddelta = TAILQ_LAST(&(rfp->rf_delta), rcs_dlist);
if (rcsnum_cmp(enddelta->rd_num, rev, 0) == 0)
break;
}
if (ret == 0) {
rfp->rf_flags |= PARSED_DELTAS;
break;
}
else if (ret == -1)
errx(1, "error parsing deltas");
}
}
/* rcs_parse_deltatexts()
*
* Parse deltatexts. If <rev> is not NULL, parse only as far as that
* revision. If <rev> is NULL, parse everything.
*/
static void
rcs_parse_deltatexts(RCSFILE *rfp, RCSNUM *rev)
{
int ret;
struct rcs_delta *rdp;
if ((rfp->rf_flags & PARSED_DELTATEXTS) ||
(rfp->rf_flags & RCS_CREATE))
return;
if (!(rfp->rf_flags & PARSED_DESC))
rcs_parse_desc(rfp, rev);
for (;;) {
if (rev != NULL) {
rdp = rcs_findrev(rfp, rev);
if (rdp->rd_text != NULL)
break;
else
ret = rcs_parse_deltatext(rfp);
} else
ret = rcs_parse_deltatext(rfp);
if (ret == 0) {
rfp->rf_flags |= PARSED_DELTATEXTS;
break;
}
else if (ret == -1)
errx(1, "problem parsing deltatexts");
}
}
/* rcs_parse_desc()
*
* Parse RCS description.
*/
static void
rcs_parse_desc(RCSFILE *rfp, RCSNUM *rev)
{
int ret = 0;
if ((rfp->rf_flags & PARSED_DESC) || (rfp->rf_flags & RCS_CREATE))
return;
if (!(rfp->rf_flags & PARSED_DELTAS))
rcs_parse_deltas(rfp, rev);
/* do parsing */
ret = rcs_gettok(rfp);
if (ret != RCS_TOK_DESC)
errx(1, "token `%s' found where RCS desc expected",
RCS_TOKSTR(rfp));
ret = rcs_gettok(rfp);
if (ret != RCS_TOK_STRING)
errx(1, "token `%s' found where RCS desc expected",
RCS_TOKSTR(rfp));
rfp->rf_desc = xstrdup(RCS_TOKSTR(rfp));
rfp->rf_flags |= PARSED_DESC;
}
/*
* rcs_parse_init()
*
* Initial parsing of file <path>, which are in the RCS format.
* Just does admin section.
*/
static void
rcs_parse_init(RCSFILE *rfp)
{
struct rcs_pdata *pdp;
if (rfp->rf_flags & RCS_PARSED)
return;
pdp = xcalloc(1, sizeof(*pdp));
pdp->rp_lines = 0;
pdp->rp_pttype = RCS_TOK_ERR;
if ((pdp->rp_file = fdopen(rfp->rf_fd, "r")) == NULL)
err(1, "fdopen: `%s'", rfp->rf_path);
pdp->rp_buf = xmalloc((size_t)RCS_BUFSIZE);
pdp->rp_blen = RCS_BUFSIZE;
pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
/* ditch the strict lock */
rfp->rf_flags &= ~RCS_SLOCK;
rfp->rf_pdata = pdp;
if (rcs_parse_admin(rfp) < 0) {
rcs_freepdata(pdp);
errx(1, "could not parse admin data");
}
if (rfp->rf_flags & RCS_PARSE_FULLY)
rcs_parse_deltatexts(rfp, NULL);
rfp->rf_flags |= RCS_SYNCED;
}
/*
* rcs_parse_admin()
*
* Parse the administrative portion of an RCS file.
* Returns the type of the first token found after the admin section on
* success, or -1 on failure.
*/
static int
rcs_parse_admin(RCSFILE *rfp)
{
u_int i;
int tok, ntok, hmask;
struct rcs_key *rk;
/* hmask is a mask of the headers already encountered */
hmask = 0;
for (;;) {
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_ERR) {
rcs_errno = RCS_ERR_PARSE;
warnx("parse error in RCS admin section");
goto fail;
} else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
/*
* Assume this is the start of the first delta or
* that we are dealing with an empty RCS file and
* we just found the description.
*/
rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
return (tok);
}
rk = NULL;
for (i = 0; i < RCS_NKEYS; i++)
if (rcs_keys[i].rk_id == tok)
rk = &(rcs_keys[i]);
if (hmask & (1 << tok)) {
rcs_errno = RCS_ERR_PARSE;
warnx("duplicate RCS key");
goto fail;
}
hmask |= (1 << tok);
switch (tok) {
case RCS_TOK_HEAD:
case RCS_TOK_BRANCH:
case RCS_TOK_COMMENT:
case RCS_TOK_EXPAND:
ntok = rcs_gettok(rfp);
if (ntok == RCS_TOK_SCOLON)
break;
if (ntok != rk->rk_val) {
rcs_errno = RCS_ERR_PARSE;
warnx("invalid value type for RCS key `%s'",
rk->rk_str);
}
if (tok == RCS_TOK_HEAD) {
if (rfp->rf_head == NULL)
rfp->rf_head = rcsnum_alloc();
rcsnum_aton(RCS_TOKSTR(rfp), NULL,
rfp->rf_head);
} else if (tok == RCS_TOK_BRANCH) {
if (rfp->rf_branch == NULL)
rfp->rf_branch = rcsnum_alloc();
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL,
rfp->rf_branch) < 0)
goto fail;
} else if (tok == RCS_TOK_COMMENT) {
rfp->rf_comment = xstrdup(RCS_TOKSTR(rfp));
} else if (tok == RCS_TOK_EXPAND) {
rfp->rf_expand = xstrdup(RCS_TOKSTR(rfp));
}
/* now get the expected semi-colon */
ntok = rcs_gettok(rfp);
if (ntok != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
warnx("missing semi-colon after RCS `%s' key",
rk->rk_str);
goto fail;
}
break;
case RCS_TOK_ACCESS:
if (rcs_parse_access(rfp) < 0)
goto fail;
break;
case RCS_TOK_SYMBOLS:
if (rcs_parse_symbols(rfp) < 0)
goto fail;
break;
case RCS_TOK_LOCKS:
if (rcs_parse_locks(rfp) < 0)
goto fail;
break;
default:
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in RCS admin section",
RCS_TOKSTR(rfp));
goto fail;
}
}
fail:
return (-1);
}
/*
* rcs_parse_delta()
*
* Parse an RCS delta section and allocate the structure to store that delta's
* information in the <rfp> delta list.
* Returns 1 if the section was parsed OK, 0 if it is the last delta, and
* -1 on error.
*/
static int
rcs_parse_delta(RCSFILE *rfp)
{
int ret, tok, ntok, hmask;
u_int i;
char *tokstr;
RCSNUM *datenum;
struct rcs_delta *rdp;
struct rcs_key *rk;
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_DESC) {
rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
return (0);
} else if (tok != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' at start of delta",
RCS_TOKSTR(rfp));
return (-1);
}
rdp = xcalloc(1, sizeof(*rdp));
rdp->rd_num = rcsnum_alloc();
rdp->rd_next = rcsnum_alloc();
TAILQ_INIT(&(rdp->rd_branches));
rcsnum_aton(RCS_TOKSTR(rfp), NULL, rdp->rd_num);
hmask = 0;
ret = 0;
tokstr = NULL;
for (;;) {
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_ERR) {
rcs_errno = RCS_ERR_PARSE;
warnx("parse error in RCS delta section");
rcs_freedelta(rdp);
return (-1);
} else if (tok == RCS_TOK_NUM || tok == RCS_TOK_DESC) {
rcs_pushtok(rfp, RCS_TOKSTR(rfp), tok);
ret = (tok == RCS_TOK_NUM ? 1 : 0);
break;
}
rk = NULL;
for (i = 0; i < RCS_NKEYS; i++)
if (rcs_keys[i].rk_id == tok)
rk = &(rcs_keys[i]);
if (hmask & (1 << tok)) {
rcs_errno = RCS_ERR_PARSE;
warnx("duplicate RCS key");
rcs_freedelta(rdp);
return (-1);
}
hmask |= (1 << tok);
switch (tok) {
case RCS_TOK_DATE:
case RCS_TOK_AUTHOR:
case RCS_TOK_STATE:
case RCS_TOK_NEXT:
case RCS_TOK_COMMITID:
ntok = rcs_gettok(rfp);
if (ntok == RCS_TOK_SCOLON) {
if (rk->rk_flags & RCS_VOPT)
break;
else {
rcs_errno = RCS_ERR_PARSE;
warnx("missing mandatory "
"value to RCS key `%s'",
rk->rk_str);
rcs_freedelta(rdp);
return (-1);
}
}
if (ntok != rk->rk_val) {
rcs_errno = RCS_ERR_PARSE;
warnx("invalid value type for RCS key `%s'",
rk->rk_str);
rcs_freedelta(rdp);
return (-1);
}
if (tokstr != NULL)
xfree(tokstr);
tokstr = xstrdup(RCS_TOKSTR(rfp));
/* now get the expected semi-colon */
ntok = rcs_gettok(rfp);
if (ntok != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
warnx("missing semi-colon after RCS `%s' key",
rk->rk_str);
xfree(tokstr);
rcs_freedelta(rdp);
return (-1);
}
if (tok == RCS_TOK_DATE) {
if ((datenum = rcsnum_parse(tokstr)) == NULL) {
xfree(tokstr);
rcs_freedelta(rdp);
return (-1);
}
if (datenum->rn_len != 6) {
rcs_errno = RCS_ERR_PARSE;
warnx("RCS date specification has %s "
"fields",
(datenum->rn_len > 6) ? "too many" :
"missing");
xfree(tokstr);
rcs_freedelta(rdp);
rcsnum_free(datenum);
return (-1);
}
rdp->rd_date.tm_year = datenum->rn_id[0];
if (rdp->rd_date.tm_year >= 1900)
rdp->rd_date.tm_year -= 1900;
rdp->rd_date.tm_mon = datenum->rn_id[1] - 1;
rdp->rd_date.tm_mday = datenum->rn_id[2];
rdp->rd_date.tm_hour = datenum->rn_id[3];
rdp->rd_date.tm_min = datenum->rn_id[4];
rdp->rd_date.tm_sec = datenum->rn_id[5];
rcsnum_free(datenum);
} else if (tok == RCS_TOK_AUTHOR) {
rdp->rd_author = tokstr;
tokstr = NULL;
} else if (tok == RCS_TOK_STATE) {
rdp->rd_state = tokstr;
tokstr = NULL;
} else if (tok == RCS_TOK_NEXT) {
rcsnum_aton(tokstr, NULL, rdp->rd_next);
} else if (tok == RCS_TOK_COMMITID) {
/* XXX just parse it, no action yet */
}
break;
case RCS_TOK_BRANCHES:
if (rcs_parse_branches(rfp, rdp) < 0) {
rcs_freedelta(rdp);
return (-1);
}
break;
default:
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in RCS delta",
RCS_TOKSTR(rfp));
rcs_freedelta(rdp);
return (-1);
}
}
if (tokstr != NULL)
xfree(tokstr);
TAILQ_INSERT_TAIL(&(rfp->rf_delta), rdp, rd_list);
rfp->rf_ndelta++;
return (ret);
}
/*
* rcs_parse_deltatext()
*
* Parse an RCS delta text section and fill in the log and text field of the
* appropriate delta section.
* Returns 1 if the section was parsed OK, 0 if it is the last delta, and
* -1 on error.
*/
static int
rcs_parse_deltatext(RCSFILE *rfp)
{
int tok;
RCSNUM *tnum;
struct rcs_delta *rdp;
tok = rcs_gettok(rfp);
if (tok == RCS_TOK_EOF)
return (0);
if (tok != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' at start of RCS delta text",
RCS_TOKSTR(rfp));
return (-1);
}
tnum = rcsnum_alloc();
rcsnum_aton(RCS_TOKSTR(rfp), NULL, tnum);
TAILQ_FOREACH(rdp, &(rfp->rf_delta), rd_list) {
if (rcsnum_cmp(tnum, rdp->rd_num, 0) == 0)
break;
}
rcsnum_free(tnum);
if (rdp == NULL) {
warnx("RCS delta text `%s' has no matching delta",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_LOG) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' where RCS log expected",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_STRING) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' where RCS log expected",
RCS_TOKSTR(rfp));
return (-1);
}
rdp->rd_log = xstrdup(RCS_TOKSTR(rfp));
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_TEXT) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' where RCS text expected",
RCS_TOKSTR(rfp));
return (-1);
}
tok = rcs_gettok(rfp);
if (tok != RCS_TOK_STRING) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' where RCS text expected",
RCS_TOKSTR(rfp));
return (-1);
}
if (RCS_TOKLEN(rfp) == 0) {
rdp->rd_text = xmalloc(1);
rdp->rd_text[0] = '\0';
rdp->rd_tlen = 0;
} else {
rdp->rd_text = xmalloc(RCS_TOKLEN(rfp));
memcpy(rdp->rd_text, RCS_TOKSTR(rfp), (RCS_TOKLEN(rfp)));
rdp->rd_tlen = RCS_TOKLEN(rfp);
}
return (1);
}
/*
* rcs_parse_access()
*
* Parse the access list given as value to the `access' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_access(RCSFILE *rfp)
{
int type;
while ((type = rcs_gettok(rfp)) != RCS_TOK_SCOLON) {
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in access list",
RCS_TOKSTR(rfp));
return (-1);
}
if (rcs_access_add(rfp, RCS_TOKSTR(rfp)) < 0)
return (-1);
}
return (0);
}
/*
* rcs_parse_symbols()
*
* Parse the symbol list given as value to the `symbols' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_symbols(RCSFILE *rfp)
{
int type;
struct rcs_sym *symp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
return (-1);
}
symp = xmalloc(sizeof(*symp));
symp->rs_name = xstrdup(RCS_TOKSTR(rfp));
symp->rs_num = rcsnum_alloc();
type = rcs_gettok(rfp);
if (type != RCS_TOK_COLON) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
xfree(symp->rs_name);
xfree(symp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
xfree(symp->rs_name);
xfree(symp);
return (-1);
}
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, symp->rs_num) < 0) {
warnx("failed to parse RCS NUM `%s'",
RCS_TOKSTR(rfp));
rcsnum_free(symp->rs_num);
xfree(symp->rs_name);
xfree(symp);
return (-1);
}
TAILQ_INSERT_TAIL(&(rfp->rf_symbols), symp, rs_list);
}
return (0);
}
/*
* rcs_parse_locks()
*
* Parse the lock list given as value to the `locks' keyword.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_locks(RCSFILE *rfp)
{
int type;
struct rcs_lock *lkp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_ID) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in lock list",
RCS_TOKSTR(rfp));
return (-1);
}
lkp = xmalloc(sizeof(*lkp));
lkp->rl_name = xstrdup(RCS_TOKSTR(rfp));
lkp->rl_num = rcsnum_alloc();
type = rcs_gettok(rfp);
if (type != RCS_TOK_COLON) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
xfree(lkp->rl_name);
xfree(lkp);
return (-1);
}
type = rcs_gettok(rfp);
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in symbol list",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
xfree(lkp->rl_name);
xfree(lkp);
return (-1);
}
if (rcsnum_aton(RCS_TOKSTR(rfp), NULL, lkp->rl_num) < 0) {
warnx("failed to parse RCS NUM `%s'",
RCS_TOKSTR(rfp));
rcsnum_free(lkp->rl_num);
xfree(lkp->rl_name);
xfree(lkp);
return (-1);
}
TAILQ_INSERT_HEAD(&(rfp->rf_locks), lkp, rl_list);
}
/* check if we have a `strict' */
type = rcs_gettok(rfp);
if (type != RCS_TOK_STRICT) {
rcs_pushtok(rfp, RCS_TOKSTR(rfp), type);
} else {
rfp->rf_flags |= RCS_SLOCK;
type = rcs_gettok(rfp);
if (type != RCS_TOK_SCOLON) {
rcs_errno = RCS_ERR_PARSE;
warnx("missing semi-colon after `strict' keyword");
return (-1);
}
}
return (0);
}
/*
* rcs_parse_branches()
*
* Parse the list of branches following a `branches' keyword in a delta.
* Returns 0 on success, or -1 on failure.
*/
static int
rcs_parse_branches(RCSFILE *rfp, struct rcs_delta *rdp)
{
int type;
struct rcs_branch *brp;
for (;;) {
type = rcs_gettok(rfp);
if (type == RCS_TOK_SCOLON)
break;
if (type != RCS_TOK_NUM) {
rcs_errno = RCS_ERR_PARSE;
warnx("unexpected token `%s' in list of branches",
RCS_TOKSTR(rfp));
return (-1);
}
brp = xmalloc(sizeof(*brp));
brp->rb_num = rcsnum_parse(RCS_TOKSTR(rfp));
if (brp->rb_num == NULL) {
xfree(brp);
return (-1);
}
TAILQ_INSERT_TAIL(&(rdp->rd_branches), brp, rb_list);
}
return (0);
}
/*
* rcs_freedelta()
*
* Free the contents of a delta structure.
*/
static void
rcs_freedelta(struct rcs_delta *rdp)
{
struct rcs_branch *rb;
if (rdp->rd_num != NULL)
rcsnum_free(rdp->rd_num);
if (rdp->rd_next != NULL)
rcsnum_free(rdp->rd_next);
if (rdp->rd_author != NULL)
xfree(rdp->rd_author);
if (rdp->rd_locker != NULL)
xfree(rdp->rd_locker);
if (rdp->rd_state != NULL)
xfree(rdp->rd_state);
if (rdp->rd_log != NULL)
xfree(rdp->rd_log);
if (rdp->rd_text != NULL)
xfree(rdp->rd_text);
while ((rb = TAILQ_FIRST(&(rdp->rd_branches))) != NULL) {
TAILQ_REMOVE(&(rdp->rd_branches), rb, rb_list);
rcsnum_free(rb->rb_num);
xfree(rb);
}
xfree(rdp);
}
/*
* rcs_freepdata()
*
* Free the contents of the parser data structure.
*/
static void
rcs_freepdata(struct rcs_pdata *pd)
{
if (pd->rp_file != NULL)
(void)fclose(pd->rp_file);
if (pd->rp_buf != NULL)
xfree(pd->rp_buf);
xfree(pd);
}
/*
* rcs_gettok()
*
* Get the next RCS token from the string <str>.
*/
static int
rcs_gettok(RCSFILE *rfp)
{
u_int i;
int ch, last, type;
size_t len;
char *bp;
struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
type = RCS_TOK_ERR;
bp = pdp->rp_buf;
pdp->rp_tlen = 0;
*bp = '\0';
if (pdp->rp_pttype != RCS_TOK_ERR) {
type = pdp->rp_pttype;
if (strlcpy(pdp->rp_buf, pdp->rp_ptok, pdp->rp_blen) >=
pdp->rp_blen)
errx(1, "rcs_gettok: strlcpy");
pdp->rp_pttype = RCS_TOK_ERR;
return (type);
}
/* skip leading whitespace */
/* XXX we must skip backspace too for compatibility, should we? */
do {
ch = getc(pdp->rp_file);
if (ch == '\n')
pdp->rp_lines++;
} while (isspace(ch));
if (ch == EOF) {
type = RCS_TOK_EOF;
} else if (ch == ';') {
type = RCS_TOK_SCOLON;
} else if (ch == ':') {
type = RCS_TOK_COLON;
} else if (isalpha(ch) || ch == '_' || ch == '$' || ch == '.' || ch == '-') {
type = RCS_TOK_ID;
*(bp++) = ch;
for (;;) {
ch = getc(pdp->rp_file);
if (ch == EOF) {
type = RCS_TOK_EOF;
break;
} else if (!isalnum(ch) && ch != '_' && ch != '-' &&
ch != '/' && ch != '.' && ch != '$') {
ungetc(ch, pdp->rp_file);
break;
}
*(bp++) = ch;
pdp->rp_tlen++;
if (bp == pdp->rp_bufend - 1) {
len = bp - pdp->rp_buf;
rcs_growbuf(rfp);
bp = pdp->rp_buf + len;
}
}
*bp = '\0';
if (type != RCS_TOK_ERR) {
for (i = 0; i < RCS_NKEYS; i++) {
if (strcmp(rcs_keys[i].rk_str,
pdp->rp_buf) == 0) {
type = rcs_keys[i].rk_id;
break;
}
}
}
} else if (ch == '@') {
/* we have a string */
type = RCS_TOK_STRING;
for (;;) {
ch = getc(pdp->rp_file);
if (ch == EOF) {
type = RCS_TOK_EOF;
break;
} else if (ch == '@') {
ch = getc(pdp->rp_file);
if (ch != '@') {
ungetc(ch, pdp->rp_file);
break;
}
} else if (ch == '\n')
pdp->rp_lines++;
*(bp++) = ch;
pdp->rp_tlen++;
if (bp == pdp->rp_bufend - 1) {
len = bp - pdp->rp_buf;
rcs_growbuf(rfp);
bp = pdp->rp_buf + len;
}
}
*bp = '\0';
} else if (isdigit(ch)) {
*(bp++) = ch;
last = ch;
type = RCS_TOK_NUM;
for (;;) {
ch = getc(pdp->rp_file);
if (ch == EOF) {
type = RCS_TOK_EOF;
break;
}
if (bp == pdp->rp_bufend)
break;
if (isalpha(ch) && ch != '.') {
type = RCS_TOK_ID;
} else if (!isdigit(ch) && ch != '.') {
ungetc(ch, pdp->rp_file);
break;
}
if (last == '.' && ch == '.') {
type = RCS_TOK_ERR;
break;
}
last = ch;
*(bp++) = ch;
pdp->rp_tlen++;
}
*bp = '\0';
}
return (type);
}
/*
* rcs_pushtok()
*
* Push a token back in the parser's token buffer.
*/
static int
rcs_pushtok(RCSFILE *rfp, const char *tok, int type)
{
struct rcs_pdata *pdp = (struct rcs_pdata *)rfp->rf_pdata;
if (pdp->rp_pttype != RCS_TOK_ERR)
return (-1);
pdp->rp_pttype = type;
if (strlcpy(pdp->rp_ptok, tok, sizeof(pdp->rp_ptok)) >=
sizeof(pdp->rp_ptok))
errx(1, "rcs_pushtok: strlcpy");
return (0);
}
/*
* rcs_growbuf()
*
* Attempt to grow the internal parse buffer for the RCS file <rf> by
* RCS_BUFEXTSIZE.
* In case of failure, the original buffer is left unmodified.
*/
static void
rcs_growbuf(RCSFILE *rf)
{
struct rcs_pdata *pdp = (struct rcs_pdata *)rf->rf_pdata;
pdp->rp_buf = xrealloc(pdp->rp_buf, 1,
pdp->rp_blen + RCS_BUFEXTSIZE);
pdp->rp_blen += RCS_BUFEXTSIZE;
pdp->rp_bufend = pdp->rp_buf + pdp->rp_blen - 1;
}
/*
* 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, struct rcs_delta *rdp, BUF *bp, int mode)
{
BUF *newbuf;
int kwtype;
u_int j, found;
u_char *c, *kwstr, *start, *end, *fin;
char expbuf[256], buf[256];
struct tm tb;
char *fmt;
size_t len;
kwtype = 0;
kwstr = NULL;
/*
* -z support for RCS
*/
tb = rdp->rd_date;
if (timezone_flag != NULL)
rcs_set_tz(timezone_flag, rdp, &tb);
len = rcs_buf_len(bp);
c = rcs_buf_get(bp);
found = 0;
/* Final character in buffer. */
fin = c + len - 1;
/* If no keywords are found, return original buffer. */
newbuf = bp;
/*
* Keyword formats:
* $Keyword$
* $Keyword: value$
*/
for (; c < fin; c++) {
if (*c == '$') {
BUF *tmpbuf;
size_t clen;
/* remember start of this possible keyword */
start = c;
/* first following character has to be alphanumeric */
c++;
if (!isalpha(*c)) {
c = start;
continue;
}
/* Number of characters between c and fin, inclusive. */
clen = fin - c + 1;
/* look for any matching keywords */
found = 0;
for (j = 0; j < RCS_NKWORDS; j++) {
size_t kwlen;
kwlen = strlen(rcs_expkw[j].kw_str);
/*
* kwlen must be less than clen since clen
* includes either a terminating `$' or a `:'.
*/
if (kwlen < clen &&
memcmp(c, rcs_expkw[j].kw_str, kwlen) == 0 &&
(c[kwlen] == '$' || c[kwlen] == ':')) {
found = 1;
kwstr = rcs_expkw[j].kw_str;
kwtype = rcs_expkw[j].kw_type;
c += kwlen;
break;
}
}
/* unknown keyword, continue looking */
if (found == 0) {
c = start;
continue;
}
/*
* if the next character was ':' we need to look for
* an '$' before the end of the line to be sure it is
* in fact a keyword.
*/
if (*c == ':') {
for (; c <= fin; ++c) {
if (*c == '$' || *c == '\n')
break;
}
if (*c != '$') {
c = start;
continue;
}
}
end = c + 1;
/* start constructing the expansion */
expbuf[0] = '\0';
if (mode & RCS_KWEXP_NAME) {
char *tmp;
(void)xasprintf(&tmp, "$%s%s", kwstr,
(mode & RCS_KWEXP_VAL) ? ": " : "");
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
/*
* order matters because of RCS_KW_ID and
* RCS_KW_HEADER here
*/
if (mode & RCS_KWEXP_VAL) {
if (kwtype & RCS_KW_RCSFILE) {
char *tmp;
(void)xasprintf(&tmp, "%s ",
(kwtype & RCS_KW_FULLPATH) ? rcsfile : basename(rcsfile));
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
if (kwtype & RCS_KW_REVISION) {
char *tmp;
rcsnum_tostr(rdp->rd_num, buf, sizeof(buf));
(void)xasprintf(&tmp, "%s ", buf);
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(buf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
if (kwtype & RCS_KW_DATE) {
if (timezone_flag != NULL)
fmt = "%Y/%m/%d %H:%M:%S%z ";
else
fmt = "%Y/%m/%d %H:%M:%S ";
strftime(buf, sizeof(buf), fmt, &tb);
if (strlcat(expbuf, buf, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
}
if (kwtype & RCS_KW_AUTHOR) {
char *tmp;
(void)xasprintf(&tmp, "%s ", rdp->rd_author);
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
if (kwtype & RCS_KW_STATE) {
char *tmp;
(void)xasprintf(&tmp, "%s ", rdp->rd_state);
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
/* order does not matter anymore below */
if (kwtype & RCS_KW_LOG)
if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
if (kwtype & RCS_KW_SOURCE) {
char *tmp;
(void)xasprintf(&tmp, "%s ", rcsfile);
if (strlcat(expbuf, tmp, sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
xfree(tmp);
}
if (kwtype & RCS_KW_NAME)
if (strlcat(expbuf, " ", sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
}
/* end the expansion */
if (mode & RCS_KWEXP_NAME)
if (strlcat(expbuf, "$", sizeof(expbuf)) >= sizeof(expbuf))
errx(1, "rcs_expand_keywords: string truncated");
/* Concatenate everything together. */
tmpbuf = rcs_buf_alloc(len + strlen(expbuf), BUF_AUTOEXT);
/* Append everything before keyword. */
rcs_buf_append(tmpbuf, rcs_buf_get(newbuf),
start - (unsigned char *)rcs_buf_get(newbuf));
/* Append keyword. */
rcs_buf_append(tmpbuf, expbuf, strlen(expbuf));
/* Point c to end of keyword. */
c = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1;
/* Append everything after keyword. */
rcs_buf_append(tmpbuf, end,
((unsigned char *)rcs_buf_get(newbuf) + rcs_buf_len(newbuf)) - end);
/* Point fin to end of data. */
fin = rcs_buf_get(tmpbuf) + rcs_buf_len(tmpbuf) - 1;
/* Recalculate new length. */
len = rcs_buf_len(tmpbuf);
/* tmpbuf is now ready, free old newbuf if allocated here. */
if (newbuf != bp)
rcs_buf_free(newbuf);
newbuf = tmpbuf;
}
}
return (newbuf);
}
/*
* 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 */
rcs_parse_deltatexts(rfp, NULL);
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (-1);
if (rdp->rd_text != NULL)
xfree(rdp->rd_text);
len = rcs_buf_len(bp);
dtext = rcs_buf_release(bp);
bp = NULL;
if (len != 0) {
rdp->rd_text = xmalloc(len);
rdp->rd_tlen = len;
(void)memcpy(rdp->rd_text, dtext, len);
xfree(dtext);
} else {
rdp->rd_text = NULL;
rdp->rd_tlen = 0;
}
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);
if (rdp->rd_log != NULL)
xfree(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);
if (rdp->rd_state != NULL)
xfree(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)
{
if (strchr(state, ' ') != NULL)
return (-1);
return (0);
}
/*
* rcs_state_get()
*
* Get the state for a given revision of a specified RCSFILE.
*
* Returns NULL on failure.
*/
const char *
rcs_state_get(RCSFILE *rfp, RCSNUM *rev)
{
struct rcs_delta *rdp;
if ((rdp = rcs_findrev(rfp, rev)) == NULL)
return (NULL);
return (rdp->rd_state);
}
/*
* 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.
*/
if (rf->rf_expand != NULL)
expmode = rcs_kwexp_get(rf);
else
expmode = RCS_KWEXP_DEFAULT;
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);
}