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remind/src/calendar.c

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/***************************************************************/
/* */
/* CALENDAR.C */
/* */
/* The code for generating a calendar. */
/* */
/* This file is part of REMIND. */
/* Copyright (C) 1992-1997 by David F. Skoll */
/* */
/***************************************************************/
#include "config.h"
static char const RCSID[] = "$Id: calendar.c,v 1.1 1998-01-15 02:50:25 dfs Exp $";
#include <stdio.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include <ctype.h>
#include "types.h"
#include "protos.h"
#include "expr.h"
#include "globals.h"
#include "err.h"
/* Data structures used by the calendar */
typedef struct cal_entry {
struct cal_entry *next;
char *text;
char *pos;
int time;
int priority;
char tag[TAG_LEN+1];
char passthru[PASSTHRU_LEN+1];
int duration;
} CalEntry;
/* Global variables */
static CalEntry *CalColumn[7];
static CalEntry *CalPs[7];
static int ColSpaces;
PRIVATE void SortCol ARGS((CalEntry **col));
PRIVATE void DoCalendarOneWeek ARGS ((void));
PRIVATE void DoCalendarOneMonth ARGS ((void));
PRIVATE int WriteCalendarRow ARGS ((void));
PRIVATE void PrintLeft ARGS ((char *s, int width, char pad));
PRIVATE void PrintCentered ARGS ((char *s, int width, char pad));
PRIVATE int WriteOneCalLine ARGS ((void));
PRIVATE int WriteOneColLine ARGS ((int col));
PRIVATE void GenerateCalEntries ARGS ((int col));
PRIVATE void WriteCalHeader ARGS ((void));
PRIVATE void WriteCalTrailer ARGS ((void));
PRIVATE int DoCalRem ARGS ((ParsePtr p, int col));
PRIVATE void WriteSimpleEntries ARGS ((int col, int jul));
PRIVATE void WriteSolidCalLine ARGS ((void));
PRIVATE void WriteIntermediateCalLine ARGS ((void));
PRIVATE void WriteCalDays ARGS ((void));
/***************************************************************/
/* */
/* ProduceCalendar */
/* */
/* Main loop for generating a calendar. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PUBLIC void ProduceCalendar(void)
#else
void ProduceCalendar()
#endif
{
int y, m, d;
ShouldCache = 1;
ColSpaces = (CalWidth - 9) / 7;
CalWidth = 7*ColSpaces + 8;
if (CalMonths) {
FromJulian(JulianToday, &y, &m, &d);
JulianToday = Julian(y, m, 1);
while (CalMonths--)
DoCalendarOneMonth();
return;
} else {
if (MondayFirst) JulianToday -= (JulianToday%7);
else JulianToday -= ((JulianToday+1)%7);
if (!DoSimpleCalendar) {
WriteIntermediateCalLine();
WriteCalDays();
WriteIntermediateCalLine();
}
while (CalWeeks--)
DoCalendarOneWeek();
return;
}
}
/***************************************************************/
/* */
/* DoCalendarOneWeek */
/* */
/* Write a calendar for a single week */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void DoCalendarOneWeek(void)
#else
static void DoCalendarOneWeek()
#endif
{
int y, m, d, done, i, l, wd;
char buf[81];
int LinesWritten = 0;
int OrigJul = JulianToday;
/* Fill in the column entries */
for (i=0; i<7; i++) {
GenerateCalEntries(i);
JulianToday++;
}
/* Output the entries */
/* If it's "Simple Calendar" format, do it simply... */
if (DoSimpleCalendar) {
if (MondayFirst) wd = JulianToday % 7;
else wd = (JulianToday + 1) % 7;
for (i=0; i<7; i++) {
WriteSimpleEntries(i, OrigJul+i-wd);
}
return;
}
/* Here come the first few lines... */
PutChar('|');
for (i=0; i<7; i++) {
FromJulian(OrigJul+i, &y, &m, &d);
sprintf(buf, "%d %c%c%c ", d, MonthName[m][0], MonthName[m][1],
MonthName[m][2]);
if (OrigJul+i == RealToday)
PrintLeft(buf, ColSpaces, '*');
else
PrintLeft(buf, ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
for (l=0; l<CalPad; l++) {
PutChar('|');
for (i=0; i<7; i++) {
PrintLeft("", ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
}
/* Write the body lines */
done = 0;
while (!done) {
done = WriteOneCalLine();
LinesWritten++;
}
/* Write any blank lines required */
while (LinesWritten++ < CalLines) {
PutChar('|');
for (i=0; i<7; i++) {
PrintLeft("", ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
}
/* Write the final line */
WriteIntermediateCalLine();
}
/***************************************************************/
/* */
/* DoCalendarOneMonth */
/* */
/* Produce a calendar for the current month. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void DoCalendarOneMonth(void)
#else
static void DoCalendarOneMonth()
#endif
{
int y, m, d, mm, yy;
if (!DoSimpleCalendar) WriteCalHeader();
if (PsCal) {
FromJulian(JulianToday, &y, &m, &d);
printf("%s\n", PSBEGIN);
printf("%s %d %d %d %d\n",
MonthName[m], y, DaysInMonth(m, y), (JulianToday+1) % 7,
MondayFirst);
mm = m-1;
if (mm<0) {
mm = 11; yy = y-1;
} else yy=y;
printf("%s %d\n", MonthName[mm], DaysInMonth(mm,yy));
mm = m+1;
if (mm>11) {
mm = 0; yy = y+1;
} else yy=y;
printf("%s %d\n", MonthName[mm], DaysInMonth(mm,yy));
}
while (WriteCalendarRow()) continue;
if (PsCal) printf("%s\n", PSEND);
if (!DoSimpleCalendar) WriteCalTrailer();
}
/***************************************************************/
/* */
/* WriteCalendarRow */
/* */
/* Write one row of the calendar */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE int WriteCalendarRow(void)
#else
static int WriteCalendarRow()
#endif
{
int y, m, d, wd, i, l;
int done;
char buf[81];
int OrigJul = JulianToday;
int LinesWritten = 0;
/* Get the date of the first day */
FromJulian(JulianToday, &y, &m, &d);
if (!MondayFirst) wd = (JulianToday + 1) % 7;
else wd = JulianToday % 7;
/* Fill in the column entries */
for (i=wd; i<7; i++) {
if (d+i-wd > DaysInMonth(m, y)) break;
GenerateCalEntries(i);
JulianToday++;
}
/* Output the entries */
/* If it's "Simple Calendar" format, do it simply... */
if (DoSimpleCalendar) {
for (i=wd; i<7 && d+i-wd<=DaysInMonth(m, y); i++) {
WriteSimpleEntries(i, OrigJul+i-wd);
}
return (d+7-wd <= DaysInMonth(m, y));
}
/* Here come the first few lines... */
PutChar('|');
for (i=0; i<7; i++) {
if (i < wd || d+i-wd>DaysInMonth(m, y))
PrintLeft("", ColSpaces, ' ');
else {
sprintf(buf, "%d", d+i-wd);
PrintLeft(buf, ColSpaces, ' ');
}
PutChar('|');
}
PutChar('\n');
for (l=0; l<CalPad; l++) {
PutChar('|');
for (i=0; i<7; i++) {
PrintLeft("", ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
}
/* Write the body lines */
done = 0;
while (!done) {
done = WriteOneCalLine();
LinesWritten++;
}
/* Write any blank lines required */
while (LinesWritten++ < CalLines) {
PutChar('|');
for (i=0; i<7; i++) {
PrintLeft("", ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
}
WriteIntermediateCalLine();
/* Return non-zero if we have not yet finished */
return (d+7-wd <= DaysInMonth(m, y));
}
/***************************************************************/
/* */
/* PrintLeft */
/* */
/* Left-justify a piece of text. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void PrintLeft(char *s, int width, char pad)
#else
static void PrintLeft(s, width, pad)
char *s;
int width;
char pad;
#endif
{
int len = strlen(s);
printf("%s", s);
while (len++ < width) PutChar(pad);
}
/***************************************************************/
/* */
/* PrintCentered */
/* */
/* Center a piec of text */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void PrintCentered(char *s, int width, char pad)
#else
static void PrintCentered(s, width, pad)
char *s;
int width;
char pad;
#endif
{
int len = strlen(s);
int d = (width - len) / 2;
int i;
for (i=0; i<d; i++) PutChar(pad);
for (i=0; i<width; i++) {
if (*s) PutChar(*s++); else break;
}
for (i=d+len; i<width; i++) PutChar(pad);
}
/***************************************************************/
/* */
/* WriteOneCalLine */
/* */
/* Write a single line. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE int WriteOneCalLine(void)
#else
static int WriteOneCalLine()
#endif
{
int done = 1, i;
PutChar('|');
for (i=0; i<7; i++) {
if (CalColumn[i]) {
if (WriteOneColLine(i)) done = 0;
} else {
PrintCentered("", ColSpaces, ' ');
}
PutChar('|');
}
PutChar('\n');
return done;
}
/***************************************************************/
/* */
/* WriteOneColLine */
/* */
/* Write a single line for a specified column. Return 1 if */
/* the column still has entries; 0 otherwise. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE int WriteOneColLine(int col)
#else
static int WriteOneColLine(col)
int col;
#endif
{
CalEntry *e = CalColumn[col];
char *s;
char *space;
int numwritten = 0;
/* Print as many characters as possible within the column */
space = NULL;
s = e->pos;
/* If we're at the end, and there's another entry, do a blank line and move
to next entry. */
if (!*s && e->next) {
PrintLeft("", ColSpaces, ' ');
CalColumn[col] = e->next;
free(e->text);
free(e);
return 1;
}
/* Find the last space char within the column. */
while (s - e->pos <= ColSpaces) {
if (!*s) {space = s; break;}
if (*s == ' ') space = s;
s++;
}
/* If we couldn't find a space char, print what we have. */
if (!space) {
for (s = e->pos; s - e->pos < ColSpaces; s++) {
if (!*s) break;
numwritten++;
PutChar(*s);
}
e->pos = s;
} else {
/* We found a space - print everything before it. */
for (s = e->pos; s<space; s++) {
if (!*s) break;
numwritten++;
PutChar(*s);
}
}
/* Flesh out the rest of the column */
while(numwritten++ < ColSpaces) PutChar(' ');
/* Skip any spaces before next word */
while (*s == ' ') s++;
/* If done, free memory if no next entry. */
if (!*s && !e->next) {
CalColumn[col] = e->next;
free(e->text);
free(e);
} else {
e->pos = s;
}
if (CalColumn[col]) return 1; else return 0;
}
/***************************************************************/
/* */
/* GenerateCalEntries */
/* */
/* Generate the calendar entries for the ith column */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void GenerateCalEntries(int col)
#else
static void GenerateCalEntries(col)
int col;
#endif
{
int r;
Token tok;
char *s;
Parser p;
/* Do some initialization first... */
ClearGlobalOmits();
DestroyOmitContexts();
DestroyVars(0);
NumTriggered = 0;
r=OpenFile(InitialFile);
if (r) {
fprintf(ErrFp, "%s %s: %s\n", ErrMsg[E_ERR_READING], InitialFile, ErrMsg[r]);
exit(1);
}
while(1) {
r = ReadLine();
if (r == E_EOF) return;
if (r) {
Eprint("%s: %s", ErrMsg[E_ERR_READING], ErrMsg[r]);
exit(1);
}
s = FindInitialToken(&tok, CurLine);
/* Should we ignore it? */
if (NumIfs &&
tok.type != T_If &&
tok.type != T_Else &&
tok.type != T_EndIf &&
tok.type != T_IfTrig &&
ShouldIgnoreLine())
{
/* DO NOTHING */
}
else {
/* Create a parser to parse the line */
CreateParser(s, &p);
switch(tok.type) {
case T_Empty:
case T_Comment:
break;
case T_ErrMsg: r=DoErrMsg(&p); break;
case T_Rem: r=DoCalRem(&p, col); break;
case T_If: r=DoIf(&p); break;
case T_IfTrig: r=DoIfTrig(&p); break;
case T_Else: r=DoElse(&p); break;
case T_EndIf: r=DoEndif(&p); break;
case T_Include: r=DoInclude(&p); break;
case T_Exit: DoExit(&p); break;
case T_Set: r=DoSet(&p); break;
case T_Fset: r=DoFset(&p); break;
case T_UnSet: r=DoUnset(&p); break;
case T_Clr: r=DoClear(&p); break;
case T_Flush: r=DoFlush(&p); break;
case T_Debug: break; /* IGNORE DEBUG CMD */
case T_Dumpvars: break; /* IGNORE DUMPVARS CMD */
case T_Banner: break; /* IGNORE BANNER CMD */
case T_Omit: r=DoOmit(&p);
if (r == E_PARSE_AS_REM) {
DestroyParser(&p);
CreateParser(s, &p);
r=DoCalRem(&p, col);
}
break;
case T_Pop: r=PopOmitContext(&p); break;
case T_Push: r=PushOmitContext(&p); break;
case T_Preserve: r=DoPreserve(&p); break;
case T_RemType: if (tok.val == RUN_TYPE) {
r=DoRun(&p);
break;
} else {
CreateParser(CurLine, &p);
r=DoCalRem(&p, col);
break;
}
/* If we don't recognize the command, do a REM by default */
/* Note: Since the parser hasn't been used yet, we don't */
/* need to destroy it here. */
default: CreateParser(CurLine, &p);
r=DoCalRem(&p, col);
break;
}
if (r && (!Hush || r != E_RUN_DISABLED)) Eprint("%s", ErrMsg[r]);
/* Destroy the parser - free up resources it may be tying up */
DestroyParser(&p);
}
}
}
/***************************************************************/
/* */
/* WriteCalHeader */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void WriteCalHeader(void)
#else
static void WriteCalHeader()
#endif
{
char buf[80];
int y, m, d;
FromJulian(JulianToday, &y, &m, &d);
sprintf(buf, "%s %d", MonthName[m], y);
WriteSolidCalLine();
PutChar('|');
PrintCentered(buf, CalWidth-2, ' ');
PutChar('|');
PutChar('\n');
WriteIntermediateCalLine();
WriteCalDays();
WriteIntermediateCalLine();
}
/***************************************************************/
/* */
/* WriteCalTrailer */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void WriteCalTrailer(void)
#else
static void WriteCalTrailer()
#endif
{
PutChar('\f');
}
/***************************************************************/
/* */
/* DoCalRem */
/* */
/* Do the REM command in the context of a calendar. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE int DoCalRem(ParsePtr p, int col)
#else
static int DoCalRem(p, col)
ParsePtr p;
int col;
#endif
{
Trigger trig;
TimeTrig tim;
Value v;
int r;
int jul;
CalEntry *CurCol = CalColumn[col];
CalEntry *CurPs = CalPs[col];
CalEntry *e;
char *s, *s2;
static char buf[TOKSIZE];
static char obuf[LINELEN];
Token tok;
/* Parse the trigger date and time */
if ( (r=ParseRem(p, &trig, &tim)) ) return r;
/* Don't include timed reminders in calendar if -a option supplied. */
#ifdef HAVE_QUEUED
if (DontIssueAts && tim.ttime != NO_TIME) return OK;
#endif
if (trig.typ == NO_TYPE) return E_EOLN;
if (trig.typ == SAT_TYPE) {
r=DoSatRemind(&trig, &tim, p);
if (r) return r;
r=ParseToken(p, buf);
if (r) return r;
FindToken(buf, &tok);
if (tok.type == T_Empty || tok.type == T_Comment) return OK;
if (tok.type != T_RemType || tok.val == SAT_TYPE) return E_PARSE_ERR;
if (tok.val == PASSTHRU_TYPE) {
r=ParseToken(p, buf);
if (r) return r;
if (!*buf) return E_EOLN;
StrnCpy(trig.passthru, buf, PASSTHRU_LEN);
}
trig.typ = tok.val;
jul = LastTriggerDate;
if (!LastTrigValid) return OK;
} else {
/* Calculate the trigger date */
jul = ComputeTrigger(trig.scanfrom, &trig, &r);
if (r) return r;
}
/* Convert PS and PSF to PASSTHRU */
if (trig.typ == PS_TYPE) {
strcpy(trig.passthru, "PostScript");
trig.typ = PASSTHRU_TYPE;
} else if (trig.typ == PSF_TYPE) {
strcpy(trig.passthru, "PSFile");
trig.typ = PASSTHRU_TYPE;
}
if (!PsCal && trig.typ == PASSTHRU_TYPE) return OK;
/* Remove any "at" times from PS or PSFILE reminders */
if (trig.typ == PASSTHRU_TYPE) {
tim.ttime = NO_TIME;
tim.duration = NO_TIME;
}
/* If trigger date == today, add it to the current entry */
if (jul == JulianToday) {
NumTriggered++;
s = obuf;
*s = 0;
if (DoSimpleCalendar || tim.ttime != NO_TIME)
s += strlen(SimpleTime(tim.ttime, s));
if (trig.typ != PASSTHRU_TYPE &&
UserFuncExists("calprefix")==1) {
sprintf(buf, "calprefix(%d)", trig.priority);
s2 = buf;
r = EvalExpr(&s2, &v);
if (!r) {
if (!DoCoerce(STR_TYPE, &v)) {
strcat(s, v.v.str);
s += strlen(s);
}
DestroyValue(v);
}
}
if ( (r=DoSubst(p, s, &trig, &tim, jul, CAL_MODE)) ) return r;
if (!*s) return OK;
if (trig.typ != PASSTHRU_TYPE &&
UserFuncExists("calsuffix")==1) {
sprintf(buf, "calsuffix(%d)", trig.priority);
s2 = buf;
r = EvalExpr(&s2, &v);
if (!r) {
if (!DoCoerce(STR_TYPE, &v)) {
strcat(s, v.v.str);
s += strlen(s);
}
DestroyValue(v);
}
}
s = obuf;
if (!DoSimpleCalendar) while (isspace(*s)) s++;
e = NEW(CalEntry);
if (!e) return E_NO_MEM;
e->text = StrDup(s);
if (!e->text) {
free(e);
return E_NO_MEM;
}
StrnCpy(e->tag, trig.tag, TAG_LEN);
if (!e->tag[0]) {
strcpy(e->tag, "*");
}
e->duration = tim.duration;
e->priority = trig.priority;
if (trig.typ == PASSTHRU_TYPE) {
StrnCpy(e->passthru, trig.passthru, PASSTHRU_LEN);
e->pos = e->passthru;
e->time = NO_TIME;
e->next = CurPs;
CalPs[col] = e;
SortCol(&CalPs[col]);
} else {
e->pos = e->text;
e->time = tim.ttime;
e->next = CurCol;
CalColumn[col] = e;
SortCol(&CalColumn[col]);
}
}
return OK;
}
/***************************************************************/
/* */
/* WriteSimpleEntries */
/* */
/* Write entries in 'simple calendar' format. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void WriteSimpleEntries(int col, int jul)
#else
static void WriteSimpleEntries(col, jul)
int col, jul;
#endif
{
CalEntry *e = CalPs[col];
CalEntry *n;
int y, m, d;
/* Do all the PASSTHRU entries first, if any */
FromJulian(jul, &y, &m, &d);
while(e) {
printf("%04d%c%02d%c%02d ", y, DATESEP,
m+1, DATESEP, d);
printf("%s ", e->passthru);
printf("%s ", e->tag);
if (e->duration != NO_TIME) {
printf("%d ", e->duration);
} else {
printf("* ");
}
if (e->time != NO_TIME) {
printf("%d ", e->time);
} else {
printf("* ");
}
printf("%s\n", e->text);
free(e->text);
n = e->next;
free(e);
e = n;
}
CalPs[col] = NULL;
e = CalColumn[col];
while(e) {
printf("%04d%c%02d%c%02d", y, DATESEP, m+1, DATESEP, d);
printf(" * %s ", e->tag);
if (e->duration != NO_TIME) {
printf("%d ", e->duration);
} else {
printf("* ");
}
if (e->time != NO_TIME) {
printf("%d ", e->time);
} else {
printf("* ");
}
printf("%s\n", e->text);
free(e->text);
n = e->next;
free(e);
e = n;
}
CalColumn[col] = NULL;
}
/***************************************************************/
/* */
/* Various functions for writing different types of lines. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void WriteSolidCalLine(void)
#else
static void WriteSolidCalLine()
#endif
{
PutChar('+');
PrintCentered("", CalWidth-2, '-');
PutChar('+');
PutChar('\n');
}
#ifdef HAVE_PROTOS
PRIVATE void WriteIntermediateCalLine(void)
#else
static void WriteIntermediateCalLine()
#endif
{
int i;
PutChar('+');
for (i=0; i<7; i++) {
PrintCentered("", ColSpaces, '-');
PutChar('+');
}
PutChar('\n');
}
#ifdef HAVE_PROTOS
PRIVATE void WriteCalDays(void)
#else
static void WriteCalDays()
#endif
{
int i;
PutChar('|');
for (i=0; i<7; i++) {
if (!MondayFirst)
PrintCentered(DayName[(i+6)%7], ColSpaces, ' ');
else
PrintCentered(DayName[i%7], ColSpaces, ' ');
PutChar('|');
}
PutChar('\n');
}
/***************************************************************/
/* */
/* SimpleTime */
/* */
/* Format the time according to simple time format. */
/* If out is NULL, result placed in internal static buffer. */
/* A trailing space is always added. */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PUBLIC char *SimpleTime(int tim, char *out)
#else
char *SimpleTime(tim, out)
int tim;
char *out;
#endif
{
static buf[9];
int h, min, hh;
if (!out) out = (char *) buf;
*out = 0;
switch(ScFormat) {
case SC_AMPM:
if (tim != NO_TIME) {
h = tim / 60;
min = tim % 60;
if (h == 0) hh=12;
else if (h > 12) hh=h-12;
else hh=h;
sprintf(out, "%2d%c%02d%s ", hh, TIMESEP, min, (h>=12) ? L_PM : L_AM);
}
break;
case SC_MIL:
if (tim != NO_TIME) {
h = tim / 60;
min = tim % 60;
sprintf(out, "%02d%c%02d ", h, TIMESEP, min);
}
break;
}
return out;
}
/***************************************************************/
/* */
/* SortCol */
/* */
/* Sort the calendar entries in a column by time and priority */
/* */
/***************************************************************/
#ifdef HAVE_PROTOS
PRIVATE void SortCol(CalEntry **col)
#else
static void SortCol(col)
CalEntry **col;
#endif
{
CalEntry *cur, *prev, *next;
cur = *col;
prev = NULL;
/* Note that we use <= comparison rather than > comparison to preserve the
file order of reminders which have the same time and priority */
while (cur->next &&
CompareRems(0, cur->time, cur->priority,
0, cur->next->time, cur->next->priority,
SortByDate, SortByTime, SortByPrio) <= 0) {
next = cur->next;
/* Swap cur and next */
if (!prev) {
*col = next;
cur->next = next->next;
next->next = cur;
prev = next;
} else {
prev->next = next;
cur->next = next->next;
next->next = cur;
prev = next;
}
}
}
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