35b8fd0b69
The C++-style comment marker "//" has been added with the rewrite of the preprocessor features. Since this character sequence occurs in ULRS, the reminder of the URL was considered a comment and stripped from the calendar line. Change parsing of "//" to only start a comment at the begin of a line or when preceeded by a white-space character. PR: 256455 Reported by: Philippe Michel (philippe.michel7 at free.fr) MFC after: 3 days
710 lines
15 KiB
C
710 lines
15 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)calendar.c 8.3 (Berkeley) 3/25/94";
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#endif
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <libutil.h>
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#include <locale.h>
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#include <pwd.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stringlist.h>
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#include <time.h>
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#include <unistd.h>
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#include "pathnames.h"
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#include "calendar.h"
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enum {
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T_OK = 0,
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T_ERR,
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T_PROCESS,
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};
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const char *calendarFile = "calendar"; /* default calendar file */
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static const char *calendarHomes[] = {".calendar", _PATH_INCLUDE_LOCAL, _PATH_INCLUDE}; /* HOME */
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static const char *calendarNoMail = "nomail";/* don't sent mail if file exist */
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static char path[MAXPATHLEN];
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static const char *cal_home;
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static const char *cal_dir;
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static const char *cal_file;
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static int cal_line;
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struct fixs neaster, npaskha, ncny, nfullmoon, nnewmoon;
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struct fixs nmarequinox, nsepequinox, njunsolstice, ndecsolstice;
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static int cal_parse(FILE *in, FILE *out);
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static StringList *definitions = NULL;
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static struct event *events[MAXCOUNT];
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static char *extradata[MAXCOUNT];
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static char *
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trimlr(char **buf)
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{
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char *walk = *buf;
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char *sep;
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char *last;
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while (isspace(*walk))
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walk++;
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*buf = walk;
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sep = walk;
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while (*sep != '\0' && !isspace(*sep))
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sep++;
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if (*sep != '\0') {
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last = sep + strlen(sep) - 1;
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while (last > walk && isspace(*last))
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last--;
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*(last+1) = 0;
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}
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return (sep);
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}
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static FILE *
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cal_fopen(const char *file)
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{
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FILE *fp;
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char *home = getenv("HOME");
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unsigned int i;
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struct stat sb;
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static bool warned = false;
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static char calendarhome[MAXPATHLEN];
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if (home == NULL || *home == '\0') {
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warnx("Cannot get home directory");
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return (NULL);
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}
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if (chdir(home) != 0) {
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warnx("Cannot enter home directory \"%s\"", home);
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return (NULL);
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}
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for (i = 0; i < nitems(calendarHomes); i++) {
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if (snprintf(calendarhome, sizeof (calendarhome), calendarHomes[i],
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getlocalbase()) >= (int)sizeof (calendarhome))
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continue;
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if (chdir(calendarhome) != 0)
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continue;
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if ((fp = fopen(file, "r")) != NULL) {
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cal_home = home;
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cal_dir = calendarhome;
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cal_file = file;
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return (fp);
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}
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}
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warnx("can't open calendar file \"%s\"", file);
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if (!warned && stat(_PATH_INCLUDE_LOCAL, &sb) != 0) {
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warnx("calendar data files now provided by calendar-data pkg.");
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warned = true;
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}
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return (NULL);
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}
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static char*
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cal_path(void)
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{
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static char buffer[MAXPATHLEN + 10];
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if (cal_dir == NULL)
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snprintf(buffer, sizeof(buffer), "%s", cal_file);
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else if (cal_dir[0] == '/')
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snprintf(buffer, sizeof(buffer), "%s/%s", cal_dir, cal_file);
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else
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snprintf(buffer, sizeof(buffer), "%s/%s/%s", cal_home, cal_dir, cal_file);
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return (buffer);
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}
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#define WARN0(format) \
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warnx(format " in %s line %d", cal_path(), cal_line)
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#define WARN1(format, arg1) \
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warnx(format " in %s line %d", arg1, cal_path(), cal_line)
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static char*
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cmptoken(char *line, const char* token)
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{
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char len = strlen(token);
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if (strncmp(line, token, len) != 0)
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return NULL;
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return (line + len);
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}
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static int
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token(char *line, FILE *out, int *skip, int *unskip)
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{
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char *walk, *sep, a, c;
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const char *this_cal_home;
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const char *this_cal_dir;
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const char *this_cal_file;
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int this_cal_line;
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while (isspace(*line))
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line++;
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if (cmptoken(line, "endif")) {
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if (*skip + *unskip == 0) {
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WARN0("#endif without prior #ifdef or #ifndef");
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return (T_ERR);
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}
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if (*skip > 0)
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--*skip;
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else
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--*unskip;
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return (T_OK);
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}
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walk = cmptoken(line, "ifdef");
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if (walk != NULL) {
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sep = trimlr(&walk);
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if (*walk == '\0') {
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WARN0("Expecting arguments after #ifdef");
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return (T_ERR);
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}
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if (*sep != '\0') {
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WARN1("Expecting a single word after #ifdef "
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"but got \"%s\"", walk);
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return (T_ERR);
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}
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if (*skip != 0 ||
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definitions == NULL || sl_find(definitions, walk) == NULL)
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++*skip;
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else
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++*unskip;
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return (T_OK);
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}
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walk = cmptoken(line, "ifndef");
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if (walk != NULL) {
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sep = trimlr(&walk);
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if (*walk == '\0') {
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WARN0("Expecting arguments after #ifndef");
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return (T_ERR);
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}
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if (*sep != '\0') {
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WARN1("Expecting a single word after #ifndef "
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"but got \"%s\"", walk);
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return (T_ERR);
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}
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if (*skip != 0 ||
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(definitions != NULL && sl_find(definitions, walk) != NULL))
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++*skip;
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else
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++*unskip;
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return (T_OK);
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}
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walk = cmptoken(line, "else");
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if (walk != NULL) {
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(void)trimlr(&walk);
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if (*walk != '\0') {
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WARN0("Expecting no arguments after #else");
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return (T_ERR);
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}
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if (*skip + *unskip == 0) {
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WARN0("#else without prior #ifdef or #ifndef");
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return (T_ERR);
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}
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if (*skip == 0) {
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++*skip;
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--*unskip;
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} else if (*skip == 1) {
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--*skip;
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++*unskip;
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}
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return (T_OK);
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}
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if (*skip != 0)
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return (T_OK);
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walk = cmptoken(line, "include");
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if (walk != NULL) {
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(void)trimlr(&walk);
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if (*walk == '\0') {
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WARN0("Expecting arguments after #include");
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return (T_ERR);
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}
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if (*walk != '<' && *walk != '\"') {
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WARN0("Excecting '<' or '\"' after #include");
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return (T_ERR);
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}
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a = *walk == '<' ? '>' : '\"';
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walk++;
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c = walk[strlen(walk) - 1];
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if (a != c) {
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WARN1("Unterminated include expecting '%c'", a);
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return (T_ERR);
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}
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walk[strlen(walk) - 1] = '\0';
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this_cal_home = cal_home;
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this_cal_dir = cal_dir;
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this_cal_file = cal_file;
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this_cal_line = cal_line;
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if (cal_parse(cal_fopen(walk), out))
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return (T_ERR);
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cal_home = this_cal_home;
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cal_dir = this_cal_dir;
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cal_file = this_cal_file;
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cal_line = this_cal_line;
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return (T_OK);
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}
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walk = cmptoken(line, "define");
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if (walk != NULL) {
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if (definitions == NULL)
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definitions = sl_init();
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sep = trimlr(&walk);
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*sep = '\0';
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if (*walk == '\0') {
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WARN0("Expecting arguments after #define");
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return (T_ERR);
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}
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if (sl_find(definitions, walk) == NULL)
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sl_add(definitions, strdup(walk));
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return (T_OK);
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}
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walk = cmptoken(line, "undef");
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if (walk != NULL) {
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if (definitions != NULL) {
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sep = trimlr(&walk);
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if (*walk == '\0') {
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WARN0("Expecting arguments after #undef");
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return (T_ERR);
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}
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if (*sep != '\0') {
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WARN1("Expecting a single word after #undef "
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"but got \"%s\"", walk);
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return (T_ERR);
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}
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walk = sl_find(definitions, walk);
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if (walk != NULL)
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walk[0] = '\0';
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}
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return (T_OK);
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}
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walk = cmptoken(line, "warning");
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if (walk != NULL) {
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(void)trimlr(&walk);
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WARN1("Warning: %s", walk);
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}
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walk = cmptoken(line, "error");
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if (walk != NULL) {
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(void)trimlr(&walk);
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WARN1("Error: %s", walk);
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return (T_ERR);
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}
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WARN1("Undefined pre-processor command \"#%s\"", line);
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return (T_ERR);
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}
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static void
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setup_locale(const char *locale)
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{
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(void)setlocale(LC_ALL, locale);
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#ifdef WITH_ICONV
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if (!doall)
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set_new_encoding();
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#endif
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setnnames();
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}
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#define REPLACE(string, slen, struct_) \
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if (strncasecmp(buf, (string), (slen)) == 0 && buf[(slen)]) { \
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if (struct_.name != NULL) \
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free(struct_.name); \
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if ((struct_.name = strdup(buf + (slen))) == NULL) \
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errx(1, "cannot allocate memory"); \
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struct_.len = strlen(buf + (slen)); \
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continue; \
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}
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static int
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cal_parse(FILE *in, FILE *out)
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{
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char *mylocale = NULL;
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char *line = NULL;
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char *buf, *bufp;
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size_t linecap = 0;
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ssize_t linelen;
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ssize_t l;
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static int count = 0;
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int i;
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int month[MAXCOUNT];
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int day[MAXCOUNT];
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int year[MAXCOUNT];
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int skip = 0;
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int unskip = 0;
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char *pp, p;
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int flags;
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char *c, *cc;
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bool incomment = false;
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if (in == NULL)
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return (1);
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cal_line = 0;
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while ((linelen = getline(&line, &linecap, in)) > 0) {
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cal_line++;
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buf = line;
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if (buf[linelen - 1] == '\n')
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buf[--linelen] = '\0';
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if (incomment) {
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c = strstr(buf, "*/");
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if (c) {
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c += 2;
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linelen -= c - buf;
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buf = c;
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incomment = false;
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} else {
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continue;
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}
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}
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if (!incomment) {
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bufp = buf;
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do {
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c = strstr(bufp, "//");
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cc = strstr(bufp, "/*");
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if (c != NULL && (cc == NULL || c - cc < 0)) {
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bufp = c + 2;
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/* ignore "//" within string to allow it in an URL */
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if (c == buf || isspace(c[-1])) {
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/* single line comment */
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*c = '\0';
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linelen = c - buf;
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break;
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}
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} else if (cc != NULL) {
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c = strstr(cc + 2, "*/");
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if (c != NULL) { // 'a /* b */ c' -- cc=2, c=7+2
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/* multi-line comment ending on same line */
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c += 2;
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memmove(cc, c, buf + linelen + 1 - c);
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linelen -= c - cc;
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bufp = cc;
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} else {
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/* multi-line comment */
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*cc = '\0';
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linelen = cc - buf;
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incomment = true;
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break;
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}
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}
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} while (c != NULL || cc != NULL);
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}
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for (l = linelen;
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l > 0 && isspace((unsigned char)buf[l - 1]);
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l--)
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;
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buf[l] = '\0';
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if (buf[0] == '\0')
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continue;
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if (buf == line && *buf == '#') {
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switch (token(buf+1, out, &skip, &unskip)) {
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case T_ERR:
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free(line);
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return (1);
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case T_OK:
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continue;
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case T_PROCESS:
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break;
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default:
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break;
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}
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}
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if (skip != 0)
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continue;
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/*
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* Setting LANG in user's calendar was an old workaround
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* for 'calendar -a' being run with C locale to properly
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* print user's calendars in their native languages.
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* Now that 'calendar -a' does fork with setusercontext(),
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* and does not run iconv(), this variable has little use.
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*/
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if (strncmp(buf, "LANG=", 5) == 0) {
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if (mylocale == NULL)
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mylocale = strdup(setlocale(LC_ALL, NULL));
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setup_locale(buf + 5);
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continue;
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}
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/* Parse special definitions: Easter, Paskha etc */
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REPLACE("Easter=", 7, neaster);
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REPLACE("Paskha=", 7, npaskha);
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REPLACE("ChineseNewYear=", 15, ncny);
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REPLACE("NewMoon=", 8, nnewmoon);
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REPLACE("FullMoon=", 9, nfullmoon);
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REPLACE("MarEquinox=", 11, nmarequinox);
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REPLACE("SepEquinox=", 11, nsepequinox);
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REPLACE("JunSolstice=", 12, njunsolstice);
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REPLACE("DecSolstice=", 12, ndecsolstice);
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if (strncmp(buf, "SEQUENCE=", 9) == 0) {
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setnsequences(buf + 9);
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continue;
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}
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/*
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* If the line starts with a tab, the data has to be
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* added to the previous line
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*/
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if (buf[0] == '\t') {
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for (i = 0; i < count; i++)
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event_continue(events[i], buf);
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continue;
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}
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/* Get rid of leading spaces (non-standard) */
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while (isspace((unsigned char)buf[0]))
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memcpy(buf, buf + 1, strlen(buf));
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/* No tab in the line, then not a valid line */
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if ((pp = strchr(buf, '\t')) == NULL)
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continue;
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/* Trim spaces in front of the tab */
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while (isspace((unsigned char)pp[-1]))
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pp--;
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p = *pp;
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*pp = '\0';
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if ((count = parsedaymonth(buf, year, month, day, &flags,
|
|
extradata)) == 0)
|
|
continue;
|
|
*pp = p;
|
|
if (count < 0) {
|
|
/* Show error status based on return value */
|
|
if (debug)
|
|
WARN1("Ignored: \"%s\"", buf);
|
|
if (count == -1)
|
|
continue;
|
|
count = -count + 1;
|
|
}
|
|
|
|
/* Find the last tab */
|
|
while (pp[1] == '\t')
|
|
pp++;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (debug)
|
|
WARN1("got \"%s\"", pp);
|
|
events[i] = event_add(year[i], month[i], day[i],
|
|
((flags &= F_VARIABLE) != 0) ? 1 : 0, pp,
|
|
extradata[i]);
|
|
}
|
|
}
|
|
while (skip-- > 0 || unskip-- > 0) {
|
|
cal_line++;
|
|
WARN0("Missing #endif assumed");
|
|
}
|
|
|
|
free(line);
|
|
fclose(in);
|
|
if (mylocale != NULL) {
|
|
setup_locale(mylocale);
|
|
free(mylocale);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
cal(void)
|
|
{
|
|
FILE *fpin;
|
|
FILE *fpout;
|
|
int i;
|
|
|
|
for (i = 0; i < MAXCOUNT; i++)
|
|
extradata[i] = (char *)calloc(1, 20);
|
|
|
|
|
|
if ((fpin = opencalin()) == NULL)
|
|
return;
|
|
|
|
if ((fpout = opencalout()) == NULL) {
|
|
fclose(fpin);
|
|
return;
|
|
}
|
|
|
|
if (cal_parse(fpin, fpout))
|
|
return;
|
|
|
|
event_print_all(fpout);
|
|
closecal(fpout);
|
|
}
|
|
|
|
FILE *
|
|
opencalin(void)
|
|
{
|
|
struct stat sbuf;
|
|
FILE *fpin;
|
|
|
|
/* open up calendar file */
|
|
cal_file = calendarFile;
|
|
if ((fpin = fopen(calendarFile, "r")) == NULL) {
|
|
if (doall) {
|
|
if (chdir(calendarHomes[0]) != 0)
|
|
return (NULL);
|
|
if (stat(calendarNoMail, &sbuf) == 0)
|
|
return (NULL);
|
|
if ((fpin = fopen(calendarFile, "r")) == NULL)
|
|
return (NULL);
|
|
} else {
|
|
fpin = cal_fopen(calendarFile);
|
|
}
|
|
}
|
|
return (fpin);
|
|
}
|
|
|
|
FILE *
|
|
opencalout(void)
|
|
{
|
|
int fd;
|
|
|
|
/* not reading all calendar files, just set output to stdout */
|
|
if (!doall)
|
|
return (stdout);
|
|
|
|
/* set output to a temporary file, so if no output don't send mail */
|
|
snprintf(path, sizeof(path), "%s/_calXXXXXX", _PATH_TMP);
|
|
if ((fd = mkstemp(path)) < 0)
|
|
return (NULL);
|
|
return (fdopen(fd, "w+"));
|
|
}
|
|
|
|
void
|
|
closecal(FILE *fp)
|
|
{
|
|
struct stat sbuf;
|
|
int nread, pdes[2], status;
|
|
char buf[1024];
|
|
|
|
if (!doall)
|
|
return;
|
|
|
|
rewind(fp);
|
|
if (fstat(fileno(fp), &sbuf) || !sbuf.st_size)
|
|
goto done;
|
|
if (pipe(pdes) < 0)
|
|
goto done;
|
|
switch (fork()) {
|
|
case -1: /* error */
|
|
(void)close(pdes[0]);
|
|
(void)close(pdes[1]);
|
|
goto done;
|
|
case 0:
|
|
/* child -- set stdin to pipe output */
|
|
if (pdes[0] != STDIN_FILENO) {
|
|
(void)dup2(pdes[0], STDIN_FILENO);
|
|
(void)close(pdes[0]);
|
|
}
|
|
(void)close(pdes[1]);
|
|
execl(_PATH_SENDMAIL, "sendmail", "-i", "-t", "-F",
|
|
"\"Reminder Service\"", (char *)NULL);
|
|
warn(_PATH_SENDMAIL);
|
|
_exit(1);
|
|
}
|
|
/* parent -- write to pipe input */
|
|
(void)close(pdes[0]);
|
|
|
|
write(pdes[1], "From: \"Reminder Service\" <", 26);
|
|
write(pdes[1], pw->pw_name, strlen(pw->pw_name));
|
|
write(pdes[1], ">\nTo: <", 7);
|
|
write(pdes[1], pw->pw_name, strlen(pw->pw_name));
|
|
write(pdes[1], ">\nSubject: ", 11);
|
|
write(pdes[1], dayname, strlen(dayname));
|
|
write(pdes[1], "'s Calendar\nPrecedence: bulk\n\n", 30);
|
|
|
|
while ((nread = read(fileno(fp), buf, sizeof(buf))) > 0)
|
|
(void)write(pdes[1], buf, nread);
|
|
(void)close(pdes[1]);
|
|
done: (void)fclose(fp);
|
|
(void)unlink(path);
|
|
while (wait(&status) >= 0);
|
|
}
|