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716 lines
20 KiB
716 lines
20 KiB
%{
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/*
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* deals with the holiday file. A yacc parser is used to parse the file.
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* All the holidays of the specified year are calculated at once and stored
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* in two arrays that have one entry for each day of the year. The day
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* drawing routines just use the julian date to index into these arrays.
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* There are two arrays because holidays can be printed either on a full
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* line under the day number, or as a small line to the right of the day
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* number. It's convenient to have both.
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*
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* parse_holidays(year, force) read the holiday file and evaluate
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* all the holiday definitions for
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* <year>. Sets holiday and sm_holiday
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* arrays. If force is set, re-eval even
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* if year is the same as last time.
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*
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* Taken from plan by Thomas Driemeyer <thomas@bitrot.de>
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* Adapted for use in KOrganizer by Preston Brown <pbrown@kde.org> and
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* Reinhold Kainhofer <reinhold@kainhofer.com>
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*/
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#include <config.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <time.h>
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#include <stdlib.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <string.h>
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#include <limits.h>
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/*** Macro definitions and constants ***/
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/*
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* Before you mail and complain that the following macro is incorrect,
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* please consider that this is one of the main battlegrounds of the
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* Annual Usenet Flame Wars. 2000 is a leap year. Just trust me on this :-)
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*/
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#define ISLEAPYEAR(y) !((y)&3)
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#define JULIAN(m,d) (monthbegin[m] + (d)-1+((m)>1 && ISLEAPYEAR(parse_year)))
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#define LAST 999
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#define ANY 0
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#define BEFORE -1
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#define AFTER -2
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/**** Public forward declarations ****/
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char *parse_holidays(const char *holidays, int year, short force);
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/**** Private forward declarations ****/
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extern int kcallex(void); /* external lexical analyzer */
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static void kcalerror(const char *s);
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static time_t date_to_time(int day, int month, int year,
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int *wkday, int *julian, int *weeknum);
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static time_t tm_to_time(struct tm *tm);
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static int day_from_name(char *str);
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static int day_from_easter(void);
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static int day_from_monthday(int month, int day);
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static int day_from_wday(int day, int wday, int num);
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static void monthday_from_day(int day, int *m, int *d, int *y);
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static int calc_easter(int year);
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static int calc_pascha(int year);
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static void setliteraldate(int month, int day, int off, int *ddup);
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static void seteaster(int off, int length, int pascha);
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static void setdate(int month, int day, int year, int off, int conditionaloff, int length);
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static void setwday(int num, int wday, int month, int off, int length);
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static void setdoff(int wday, int rel, int month, int day,
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int year, int off, int length);
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/*** Variables and structures ***/
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static int m, d, y;
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extern int kcallineno; /* current line # being parsed */
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extern FILE *kcalin; /* file currently being processed */
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int yacc_small; /* small string or on its own line? */
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int yacc_stringcolor; /* color of holiday name text, 1..8 */
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char *yacc_string; /* holiday name text */
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int yacc_daycolor; /* color of day number, 1..8 */
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char *progname; /* argv[0] */
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int parse_year = -1; /* year being parsed, 0=1970..99=2069*/
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static const char *filename; /* holiday filename */
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static char errormsg[PATH_MAX+200];/* error message if any, or "" */
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static int easter_julian; /* julian date of Easter Sunday */
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static int pascha_julian; /* julian date of Pascha Sunday */
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static char *holiday_name; /* strdup'd yacc_string */
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short monthlen[12] = { 31, 28, 31, 30,
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31, 30, 31, 31,
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30, 31, 30, 31 };
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short monthbegin[12] = { 0, 31, 59, 90,
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120, 151, 181,
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212, 243, 273,
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304, 334 };
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/* struct holiday;*/
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struct holiday {
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char *string; /* name of holiday, 0=not a holiday */
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int color;
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unsigned short dup; /* reference count */
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struct holiday *next;
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};
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struct holiday holidays[366]; /* info for each day, separate for */
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/*struct holiday sm_holiday[366];*/ /* full-line texts under, and small */
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/* texts next to day number */
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static int initialized=0;
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%}
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%union { int ival; char *sval; }
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%type <ival> color offset conditionaloffset length expr pexpr number month reldate wdaycondition
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%token <ival> NUMBER MONTH WDAY COLOR
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%token <sval> STRING
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%token IN PLUS MINUS SMALL CYEAR LEAPYEAR SHIFT IF
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%token LENGTH EASTER EQ NE LE GE LT GT PASCHA
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%left OR
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%left AND
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%right EQ NE LE GE LT GT
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%left '-' '+'
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%left '*' '/' '%'
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%nonassoc '!'
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%nonassoc UMINUS
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%left '?' ':'
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%start list
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%%
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list :
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| list small color STRING color { yacc_stringcolor = $3;
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yacc_string = $4;
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yacc_daycolor = $5; }
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entry { free(yacc_string); }
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;
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small : { yacc_small = 0; }
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| SMALL { yacc_small = 1; }
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;
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color : { $$ = 0; }
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| COLOR { $$ = $1; }
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;
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entry : EASTER offset length { seteaster($2, $3, 0); }
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| PASCHA offset length { seteaster($2, $3, 1); }
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| date offset conditionaloffset length { setdate( m, d, y, $2, $3, $4);}
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| WDAY offset length { setwday( 0, $1, 0, $2, $3);}
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| pexpr WDAY offset length { setwday($1, $2, 0, $3, $4);}
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| pexpr WDAY IN month offset length { setwday($1, $2, $4, $5, $6);}
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| WDAY pexpr date offset length { setdoff($1, $2,m,d,y,$4,$5);}
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;
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offset : { $$ = 0; }
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| PLUS expr { $$ = $2; }
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| MINUS expr { $$ = -$2; }
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;
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conditionaloffset : { $$ = 0; }
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| SHIFT wdaycondition IF wdaycondition { $$ = ($2<<8) | $4;printf("Shift to %i if %i\n", $2, $4); }
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;
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wdaycondition : { $$ = 0; }
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| WDAY { $$ = (1<<$1); }
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| WDAY OR wdaycondition { $$ = (1<<$1) | $3; }
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;
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length : { $$ = 1; }
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| LENGTH expr { $$ = $2; }
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;
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date : pexpr '.' month { m = $3; d = $1; y = 0; }
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| pexpr '.' month '.' { m = $3; d = $1; y = 0; }
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| pexpr '.' month '.' expr { m = $3; d = $1; y = $5; }
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| month '/' pexpr { m = $1; d = $3; y = 0; }
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| month '/' pexpr '/' pexpr { m = $1; d = $3; y = $5; }
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| MONTH pexpr { m = $1; d = $2; y = 0; }
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| MONTH pexpr pexpr { m = $1; d = $2; y = $3; }
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| pexpr MONTH { m = $2; d = $1; y = 0; }
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| pexpr MONTH pexpr { m = $2; d = $1; y = $3; }
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| pexpr '.' MONTH pexpr { m = $3; d = $1; y = $4; }
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| pexpr { monthday_from_day($1,
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&m, &d, &y); }
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;
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reldate : STRING { $$ = day_from_name($1); }
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| EASTER { $$ = day_from_easter(); }
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| pexpr '.' month { $$ = day_from_monthday
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($3, $1); }
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| pexpr '.' month '.' { $$ = day_from_monthday
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($3, $1); }
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| month '/' pexpr { $$ = day_from_monthday
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($1, $3); }
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| pexpr MONTH { $$ = day_from_monthday
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($2, $1); }
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| MONTH pexpr { $$ = day_from_monthday
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($1, $2); }
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| WDAY pexpr pexpr { $$ = day_from_wday($3, $1,
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$2 == -1 ? -1 : 0); }
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| pexpr WDAY IN month { int day=day_from_monthday($4,1);
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$$ = $1 == 999
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? day_from_wday(day+1,$2,-1)
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: day_from_wday(day,$2,$1-1);}
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;
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month : MONTH | pexpr;
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expr : pexpr { $$ = $1; }
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| expr OR expr { $$ = $1 || $3; }
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| expr AND expr { $$ = $1 && $3; }
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| expr EQ expr { $$ = $1 == $3; }
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| expr NE expr { $$ = $1 != $3; }
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| expr LE expr { $$ = $1 <= $3; }
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| expr GE expr { $$ = $1 >= $3; }
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| expr LT expr { $$ = $1 < $3; }
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| expr GT expr { $$ = $1 > $3; }
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| expr '+' expr { $$ = $1 + $3; }
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| expr '-' expr { $$ = $1 - $3; }
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| expr '*' expr { $$ = $1 * $3; }
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| expr '/' expr { $$ = $3 ? $1 / $3 : 0; }
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| expr '%' expr { $$ = $3 ? $1 % $3 : 0; }
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| expr '?' expr ':' expr { $$ = $1 ? $3 : $5; }
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| '!' expr { $$ = !$2; }
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| '[' reldate ']' { $$ = $2; }
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;
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pexpr : '(' expr ')' { $$ = $2; }
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| number { $$ = $1; }
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;
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number : NUMBER
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| '-' NUMBER %prec UMINUS { $$ = -$2; }
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| CYEAR { $$ = parse_year; }
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| LEAPYEAR pexpr { $$ = !(($2) & 3); }
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;
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%%
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/*** Private Yacc callbacks and helper functions ***/
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static void kcalerror(const char *msg)
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{
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fprintf(stderr, "%s: %s in line %d of %s\n", progname,
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msg, kcallineno+1, filename);
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if (!*errormsg)
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snprintf(errormsg,sizeof(errormsg),
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"Problem with holiday file %s:\n%.80s in line %d",
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filename, msg, kcallineno+1);
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}
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static time_t date_to_time(int day, int month, int year,
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int *wkday, int *julian, int *weeknum)
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{
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struct tm tm;
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time_t ttime;
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tm.tm_sec = 0;
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tm.tm_min = 0;
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tm.tm_hour = 0;
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tm.tm_mday = day;
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tm.tm_mon = month;
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tm.tm_year = year;
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ttime = tm_to_time(&tm);
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if (wkday)
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*wkday = tm.tm_wday;
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if (julian)
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*julian = tm.tm_yday;
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if (weeknum)
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*weeknum = 0
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? tm.tm_yday / 7
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: tm.tm_yday ? ((tm.tm_yday - 1) /7) + 1 : 0;
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return(ttime == -1 || day != tm.tm_mday ? 0 : ttime);
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}
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static time_t tm_to_time(struct tm *tm)
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{
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time_t t; /* return value */
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t = monthbegin[tm->tm_mon] /* full months */
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+ tm->tm_mday-1 /* full days */
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+ (!(tm->tm_year & 3) && tm->tm_mon > 1); /* leap day this year*/
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tm->tm_yday = t;
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t += 365 * (tm->tm_year - 70) /* full years */
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+ (tm->tm_year - 69)/4; /* past leap days */
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tm->tm_wday = (t + 4) % 7;
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t = t*86400 + tm->tm_hour*3600 + tm->tm_min*60 + tm->tm_sec;
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if (tm->tm_mday > monthlen[tm->tm_mon] +
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(!(tm->tm_year & 3) && tm->tm_mon == 1))
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return((time_t)-1);
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return(t);
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}
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/*
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* set holiday by weekday (monday..sunday). The expression is
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* "every <num>-th <wday> of <month> plus <off> days". num and month
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* can be ANY or LAST.
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*/
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static void setwday(int num, int wday, int month, int off, int length)
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{
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int min_month = 0, max_month = 11;
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int min_num = 0, max_num = 4;
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int mn, n, dy, l, mlen, wday1;
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int ddup = 0;
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if (month != ANY)
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min_month = max_month = month-1;
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if (month == LAST)
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min_month = max_month = 11;
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if (num != ANY)
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min_num = max_num = num-1;
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holiday_name = yacc_string;
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for (mn=min_month; mn <= max_month; mn++) {
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(void)date_to_time(1, mn, parse_year, &wday1, 0, 0);
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dy = (wday-1 - (wday1-1) +7) % 7 + 1;
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mlen = monthlen[mn] + (mn==1 && ISLEAPYEAR(parse_year));
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if (num == LAST)
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for (l=0; l < length; l++)
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setliteraldate(mn, dy+28<=mlen ? dy+28 : dy+21,
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off+l, &ddup);
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else
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for (dy+=min_num*7, n=min_num; n <= max_num; n++, dy+=7)
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if (dy >= 1 && dy <= mlen)
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for (l=0; l < length; l++)
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setliteraldate(mn,dy,off+l,&ddup);
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}
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}
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/*
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* set holiday by weekday (monday..sunday) date offset. The expression is
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* "every <wday> before/after <date> plus <off> days".
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* (This routine contributed by Peter Littlefield <plittle@sofkin.ca>)
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*/
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static void setdoff(int wday, int rel, int month, int day,
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int year, int off, int length)
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{
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int min_month = 0, max_month = 11;
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int min_day = 1, max_day = 31;
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int mn, dy, nd, l, wday1;
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int ddup = 0;
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if (year != ANY) {
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year %= 100;
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if (year < 70) year += 100;
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if (year != parse_year)
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return;
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}
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if (month != ANY)
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min_month = max_month = month-1;
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if (month == LAST)
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min_month = max_month = 11;
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if (day != ANY)
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min_day = max_day = day;
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holiday_name = yacc_string;
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for (mn=min_month; mn <= max_month; mn++)
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if (day == LAST) {
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(void)date_to_time(monthlen[mn], mn, parse_year,
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&wday1, 0, 0);
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nd = (((wday - wday1 + 7) % 7) -
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((rel == BEFORE) ? 7 : 0)) % 7;
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for (l=0; l < length; l++)
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setliteraldate(mn,monthlen[mn]+nd, off+l, &ddup);
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} else
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for (dy=min_day; dy <= max_day; dy++) {
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(void)date_to_time(dy, mn, parse_year,
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&wday1, 0, 0);
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nd = (((wday - wday1 + 7) % 7) -
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((rel == BEFORE) ? 7 : 0)) % 7;
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for (l=0; l < length; l++)
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setliteraldate(mn, dy+nd, off+l, &ddup);
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}
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}
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static int conditionalOffset( int day, int month, int year, int cond )
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{
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int off = 0;
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int wday = 0;
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(void)date_to_time( day, month, year, &wday, 0, 0);
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if ( wday == 0 ) { wday = 7; } /* sunday is 7, not 0 */
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if ( cond & (1<<wday) ) {
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/* condition matches -> higher 8 bits contain the possible days to shift to */
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int to = (cond >> 8);
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while ( !(to & (1<<((wday+off)%7))) && (off < 8) ) {
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++off;
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}
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}
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if ( off >= 8 ) return 0;
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else return off;
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}
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/*
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* set holiday by date. Ignore holidays in the wrong year. The code is
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* complicated by expressions such as "any/last/any" (every last day of
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* the month).
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*/
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static void setdate(int month, int day, int year, int off, int conditionaloff, int length)
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{
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int min_month = 0, max_month = 11;
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int min_day = 1, max_day = 31;
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int mn, dy, l;
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int ddup = 0;
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if (year != ANY) {
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year %= 100;
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if (year < 70) year += 100;
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if (year != parse_year)
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return;
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}
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if (month != ANY)
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min_month = max_month = month-1;
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if (month == LAST)
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min_month = max_month = 11;
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if (day != ANY)
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min_day = max_day = day;
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holiday_name = yacc_string;
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/** TODO: Include the conditionaloff variable. */
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/** The encoding of the conditional offset is:
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8 lower bits: conditions to shift (bit-register, bit 1=mon, ..., bit 7=sun)
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8 higher bits: weekday to shift to (bit-register, bit 1=mon, ..., bit 7=sun)
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*/
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for (mn=min_month; mn <= max_month; mn++) {
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if (day == LAST) {
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int newoff = off + conditionalOffset( monthlen[mn], mn, parse_year, conditionaloff );
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for (l=0; l < length; l++)
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setliteraldate(mn, monthlen[mn], newoff+l, &ddup);
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} else {
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for (dy=min_day; dy <= max_day; dy++) {
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int newoff = off + conditionalOffset( dy, mn, parse_year, conditionaloff );
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for (l=0; l < length; l++)
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setliteraldate(mn, dy, newoff+l, &ddup);
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}
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}
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}
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}
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/*
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* After the two routines above have removed ambiguities (ANY) and resolved
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* weekday specifications, this routine registers the holiday in the holiday
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* array. There are two of these, for full-line holidays (they take away one
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* appointment line in the month calendar daybox) and "small" holidays, which
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* appear next to the day number. If the day is already some other holiday,
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* add a new item to the singly-linked list and insert the holiday there.
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* <ddup> is information stored for parse_holidays(), it
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* will free() the holiday name only if its dup field is 0 (because many
|
|
* string fields can point to the same string, which was allocated only once
|
|
* by the lexer, and should therefore only be freed once).
|
|
*/
|
|
|
|
static void setliteraldate(int month, int day, int off, int *ddup)
|
|
{
|
|
int julian = JULIAN(month, day) + off;
|
|
/* struct holiday *hp = yacc_small ? &sm_holiday[julian]
|
|
: &holiday[julian]; */
|
|
struct holiday *hp = 0;
|
|
|
|
if (julian >= 0 && julian <= 365 ) {
|
|
hp = &holidays[julian];
|
|
if ( hp->string ) {
|
|
while (hp->next) { hp = hp->next; }
|
|
hp->next = malloc( sizeof(struct holiday)*2 );
|
|
hp = hp->next;
|
|
hp->next = 0;
|
|
}
|
|
if (!*ddup)
|
|
holiday_name = strdup(holiday_name);
|
|
hp->string = holiday_name;
|
|
hp->color = (yacc_stringcolor == 0) ? yacc_daycolor : yacc_stringcolor;
|
|
hp->dup = (*ddup)++;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* set a holiday relative to Easter
|
|
*/
|
|
|
|
static void seteaster(int off, int length, int pascha /*0=Easter, 1=Pascha*/)
|
|
{
|
|
int ddup = 0; /* flag for later free() */
|
|
int julian = (pascha ? pascha_julian : easter_julian) + off;
|
|
/* struct holiday *hp = yacc_small ? &sm_holiday[julian]
|
|
: &holidays[julian];*/
|
|
struct holiday *hp = 0;
|
|
|
|
holiday_name = yacc_string;
|
|
while (length-- > 0) {
|
|
if (julian >= 0 && julian <= 365 ) {
|
|
hp = &holidays[julian];
|
|
if ( hp->string ) {
|
|
while (hp->next) { hp = hp->next; }
|
|
hp->next = malloc( sizeof(struct holiday)*2 );
|
|
hp = hp->next;
|
|
hp->next = 0;
|
|
}
|
|
if (!ddup)
|
|
holiday_name = strdup(holiday_name);
|
|
hp->string = holiday_name;
|
|
hp->color = (yacc_stringcolor == 0) ? yacc_daycolor : yacc_stringcolor;
|
|
hp->dup = ddup++;
|
|
}
|
|
julian++;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* calculate Easter Sunday as a julian date. I got this from Armin Liebl
|
|
* <liebla@informatik.tu-muenchen.de>, who got it from Knuth. I hope I got
|
|
* all this right...
|
|
*/
|
|
|
|
static int calc_easter(int year)
|
|
{
|
|
int golden, cent, grcor, clcor, extra, epact, easter;
|
|
|
|
golden = (year/19)*(-19);
|
|
golden += year+1;
|
|
cent = year/100+1;
|
|
grcor = (cent*3)/(-4)+12;
|
|
clcor = ((cent-18)/(-25)+cent-16)/3;
|
|
extra = (year*5)/4+grcor-10;
|
|
epact = golden*11+20+clcor+grcor;
|
|
epact += (epact/30)*(-30);
|
|
if (epact<=0)
|
|
epact += 30;
|
|
if (epact==25) {
|
|
if (golden>11)
|
|
epact += 1;
|
|
} else {
|
|
if (epact==24)
|
|
epact += 1;
|
|
}
|
|
easter = epact*(-1)+44;
|
|
if (easter<21)
|
|
easter += 30;
|
|
extra += easter;
|
|
extra += (extra/7)*(-7);
|
|
extra *= -1;
|
|
easter += extra+7;
|
|
easter += 31+28+!(year&3)-1;
|
|
return(easter);
|
|
}
|
|
|
|
|
|
/*
|
|
* set a holiday relative to Pascha, which is the Christian Orthodox Easter.
|
|
* Algorithm provided by Efthimios Mavrogeorgiadis <emav@enl.auth.gr>.
|
|
* Changed 12.9.99 by Efthimios Mavrogeorgiadis <emav@enl.auth.gr>.
|
|
*/
|
|
|
|
static int calc_pascha(int year) /* Pascha in which year? */
|
|
{
|
|
int a = year % 19;
|
|
int b = (19 * a + 15) % 30;
|
|
int c = (year + (year - (year % 4))/4 + b) % 7;
|
|
int dd = b - c;
|
|
int e = dd-3 - (2 - (year-(year%100))/100 + (year-(year%400))/400);
|
|
int f = (e - (e % 31))/31;
|
|
int day = e - 30 * f;
|
|
return(31 + 28+!(year&3) + 31 + (f ? 30 : 0) + day-1);
|
|
}
|
|
|
|
|
|
/*
|
|
* functions used for [] syntax: (Erwin Hugo Achermann <acherman@inf.ethz.ch>)
|
|
*
|
|
* day_from_name (str) gets day from symbolic name
|
|
* day_from_easter () gets day as easter sunday
|
|
* day_from_monthday (month, day) gets <day> from <month/day>
|
|
* day_from_wday (day, wday, num) gets num-th day (wday) after <day> day
|
|
* monthday_from_day (day, *m, *d, *y) gets month/day/cur_year from <day>
|
|
*/
|
|
|
|
static int day_from_name(char *str)
|
|
{
|
|
int i;
|
|
char *name;
|
|
|
|
for (i=0; i < 366; i++) {
|
|
name = holidays[i].string;
|
|
if (name && !strcmp(str, name))
|
|
return(i);
|
|
}
|
|
return(-1);
|
|
}
|
|
|
|
|
|
static int day_from_easter(void)
|
|
{
|
|
return(easter_julian);
|
|
}
|
|
|
|
|
|
static int day_from_monthday(int month, int day)
|
|
{
|
|
if (month == 13)
|
|
return(365 + ISLEAPYEAR(parse_year));
|
|
return(JULIAN(month - 1, day));
|
|
}
|
|
|
|
|
|
static void monthday_from_day(int day, int *mn, int *dy, int *yr)
|
|
{
|
|
int i, len;
|
|
|
|
*yr = parse_year;
|
|
*mn = 0;
|
|
*dy = 0;
|
|
if (day < 0)
|
|
return;
|
|
for (i=0; i < 12; i++) {
|
|
len = monthlen[i] + (i == 1 && ISLEAPYEAR(parse_year));
|
|
if (day < len) {
|
|
*mn = i + 1;
|
|
*dy = day + 1;
|
|
break;
|
|
}
|
|
day -= len;
|
|
}
|
|
}
|
|
|
|
|
|
static int day_from_wday(int day, int wday, int num)
|
|
{
|
|
int wkday, yday, weeknum;
|
|
|
|
(void)date_to_time(1, 0, parse_year, &wkday, &yday, &weeknum);
|
|
day += (wday - wkday - day + 1001) % 7;
|
|
day += num * 7;
|
|
return (day);
|
|
}
|
|
|
|
static void initialize()
|
|
{
|
|
struct holiday *hp;
|
|
int dy;
|
|
initialized = 1;
|
|
for (hp=holidays, dy=0; dy < 366; dy++, hp++)
|
|
{
|
|
hp->color = 0;
|
|
hp->dup = 0;
|
|
hp->string = 0;
|
|
hp->next = 0;
|
|
}
|
|
}
|
|
|
|
/*** Public Functions ***/
|
|
/*
|
|
* parse the holiday text file, and set up the holiday arrays for a year.
|
|
* If year is -1, re-parse the last year parsed (this is used when the
|
|
* holiday file changes). If there is a CPP_PATH, check if the executable
|
|
* really exists, and if so, pipe the holioday files through it.
|
|
* Return an error message if an error occurred, 0 otherwise.
|
|
*/
|
|
|
|
char *parse_holidays(const char *holidayfile, int year, short force)
|
|
{
|
|
struct holiday *hp;
|
|
int dy;
|
|
short piped = 0;
|
|
if (!initialized)
|
|
initialize();
|
|
|
|
if (year == parse_year && !force)
|
|
return(0);
|
|
if (year < 0)
|
|
year = parse_year;
|
|
parse_year = year;
|
|
easter_julian = calc_easter(year + 1900);
|
|
pascha_julian = calc_pascha(year + 1900);
|
|
|
|
for (hp=holidays, dy=0; dy < 366; dy++, hp++)
|
|
{
|
|
hp->color = 0;
|
|
if (hp->string) {
|
|
if (!hp->dup )
|
|
free(hp->string);
|
|
hp->string = 0;
|
|
}
|
|
{
|
|
struct holiday *nx = hp->next;
|
|
hp->next = 0;
|
|
while (nx) {
|
|
struct holiday *nxtmp;
|
|
if ( nx->string && !nx->dup ) {
|
|
free( nx->string );
|
|
}
|
|
nxtmp=nx;
|
|
nx = nxtmp->next;
|
|
free( nxtmp );
|
|
}
|
|
}
|
|
}
|
|
/* for (hp=sm_holiday, d=0; d < 366; d++, hp++)
|
|
if (hp->string) {
|
|
if (!hp->dup)
|
|
free(hp->string);
|
|
hp->string = 0;
|
|
}*/
|
|
|
|
filename = holidayfile;
|
|
if (access(filename, R_OK)) return(0);
|
|
kcalin = fopen(filename, "r");
|
|
if (!kcalin) return(0);
|
|
*errormsg = 0;
|
|
kcallineno = 0;
|
|
kcalparse();
|
|
if (piped) pclose(kcalin);
|
|
else fclose(kcalin);
|
|
if (*errormsg) return(errormsg);
|
|
|
|
return(0);
|
|
}
|