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34f8486c10da8c955e0d2da846b60fb2eafdec34
remind/src/dorem.c
Dianne Skoll e6ceeee2ec
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Remind unit tests / tests (push) Successful in 33s
Details
Add the "INFO" clause to the REM command. 
Intended to pass additional information to a back-end to use as it wishes.
One example is to add extra info such as locaiton, description, etc. to ical
files.
2025-01-28 15:51:28 -05:00

1777 lines
53 KiB
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/***************************************************************/
/* */
/* DOREM.C */
/* */
/* Contains routines for parsing reminders and evaluating */
/* triggers. Also contains routines for parsing OMIT */
/* commands. */
/* */
/* This file is part of REMIND. */
/* Copyright (C) 1992-2025 by Dianne Skoll */
/* SPDX-License-Identifier: GPL-2.0-only */
/* */
/***************************************************************/
#include "config.h"
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include "types.h"
#include "globals.h"
#include "err.h"
#include "protos.h"
static int ParseTimeTrig (ParsePtr s, TimeTrig *tim);
static int ParseLocalOmit (ParsePtr s, Trigger *t);
static int ParseScanFrom (ParsePtr s, Trigger *t, int type);
static int ParsePriority (ParsePtr s, Trigger *t);
static int ParseUntil (ParsePtr s, Trigger *t, int type);
static int ShouldTriggerBasedOnWarn (Trigger *t, int dse, int *err);
static int ComputeTrigDuration(TimeTrig *t);
static int
ensure_expr_references_first_local_arg(expr_node *node)
{
expr_node *other;
if (!node) {
return 0;
}
if (node->type == N_LOCAL_VAR && node->u.arg == 0) {
return 1;
}
if (ensure_expr_references_first_local_arg(node->child)) {
return 1;
}
other = node->sibling;
while (other) {
if (ensure_expr_references_first_local_arg(other)) {
return 1;
}
other = other->sibling;
}
return 0;
}
static void
check_trigger_function(char const *fname, char const *type)
{
UserFunc *f;
if (!*fname) {
return;
}
f = FindUserFunc(fname);
if (!f) {
if (strcmp(type, "WARN")) {
/* Undefined WARN functions are diagnosed elsewhere... */
Wprint(tr("Undefined %s function: `%s'"), type, fname);
}
return;
}
if (f->nargs != 1) {
Wprint(tr("%s function `%s' defined at %s:%d should take 1 argument but actually takes %d"), type, fname, f->filename, f->lineno, f->nargs);
return;
}
if (ensure_expr_references_first_local_arg(f->node)) {
return;
}
Wprint(tr("%s function `%s' defined at %s:%d does not use its argument"), type, fname, f->filename, f->lineno);
}
static void
ensure_satnode_mentions_trigdate_aux(expr_node *node, int *mentioned)
{
char const *name;
expr_node *other;
UserFunc *f;
if (!node) {
return;
}
if (*mentioned) {
return;
}
if (node->type == N_BUILTIN_FUNC) {
name = node->u.builtin_func->name;
if (!strcmp(name, "trigdate") ||
!strcmp(name, "trigdatetime")) {
*mentioned = 1;
return;
}
} else if (node->type == N_SHORT_SYSVAR || node->type == N_SYSVAR) {
if (node->type == N_SHORT_SYSVAR) {
name = node->u.name;
} else {
name = node->u.value.v.str;
}
if (!StrCmpi(name, "T") ||
!StrCmpi(name, "Td") ||
!StrCmpi(name, "Tm") ||
!StrCmpi(name, "Tw") ||
!StrCmpi(name, "Ty")) {
*mentioned = 1;
return;
}
} else if (node->type == N_SHORT_USER_FUNC || node->type == N_USER_FUNC) {
if (node->type == N_SHORT_USER_FUNC) {
name = node->u.name;
} else {
name = node->u.value.v.str;
}
f = FindUserFunc(name);
if (f && !f->recurse_flag) {
f->recurse_flag = 1;
ensure_satnode_mentions_trigdate_aux(f->node, mentioned);
f->recurse_flag = 0;
if (*mentioned) {
return;
}
}
}
ensure_satnode_mentions_trigdate_aux(node->child, mentioned);
if (*mentioned) {
return;
}
other = node->sibling;
while (other) {
ensure_satnode_mentions_trigdate_aux(other, mentioned);
if (*mentioned) {
return;
}
other = other->sibling;
}
}
static void ensure_satnode_mentions_trigdate(expr_node *node)
{
int mentioned = 0;
char const *str;
if (node->type == N_CONSTANT || node->type == N_SHORT_STR) {
if (node->type == N_CONSTANT) {
if (node->u.value.type == INT_TYPE) {
if (node->u.value.v.val == 0) {
Wprint(tr("SATISFY: constant 0 will never be true"));
}
return;
}
if (node->u.value.type != STR_TYPE) {
return;
}
str = node->u.value.v.str;
} else {
str = node->u.name;
}
if (!*str) {
Wprint(tr("SATISFY: constant \"\" will never be true"));
}
return;
}
ensure_satnode_mentions_trigdate_aux(node, &mentioned);
if (!mentioned) {
Wprint(tr("SATISFY: expression has no reference to trigdate() or $T..."));
}
}
static int
ComputeTrigDuration(TimeTrig *t)
{
if (t->ttime == NO_TIME ||
t->duration == NO_TIME) {
return 0;
}
return (t->ttime + t->duration - 1) / MINUTES_PER_DAY;
}
/***************************************************************/
/* */
/* DoRem */
/* */
/* Do the REM command. */
/* */
/***************************************************************/
int DoRem(ParsePtr p)
{
Trigger trig;
TimeTrig tim;
int r, err;
int dse;
DynamicBuffer buf;
Token tok;
DBufInit(&buf);
/* Parse the trigger date and time */
if ( (r=ParseRem(p, &trig, &tim)) != OK ) {
FreeTrig(&trig);
return r;
}
if (trig.typ == NO_TYPE) {
PurgeEchoLine("%s\n%s\n", "#!P! Cannot parse next line", CurLine);
FreeTrig(&trig);
return E_EOLN;
}
if (trig.typ == SAT_TYPE) {
PurgeEchoLine("%s\n", "#!P: Cannot purge SATISFY-type reminders");
PurgeEchoLine("%s\n", CurLine);
r=DoSatRemind(&trig, &tim, p);
if (r) {
if (r == E_CANT_TRIG && trig.maybe_uncomputable) {
r = OK;
}
FreeTrig(&trig);
if (r == E_EXPIRED) return OK;
return r;
}
if (!LastTrigValid) {
FreeTrig(&trig);
return OK;
}
r=ParseToken(p, &buf);
if (r) {
FreeTrig(&trig);
return r;
}
FindToken(DBufValue(&buf), &tok);
DBufFree(&buf);
if (tok.type == T_Empty || tok.type == T_Comment) {
r = OK;
if (trig.addomit) {
r = AddGlobalOmit(LastTriggerDate);
}
DBufFree(&buf);
FreeTrig(&trig);
return r;
}
if (tok.type != T_RemType || tok.val == SAT_TYPE) {
DBufFree(&buf);
FreeTrig(&trig);
return E_PARSE_ERR;
}
if (tok.val == PASSTHRU_TYPE) {
r=ParseToken(p, &buf);
if (r) {
FreeTrig(&trig);
return r;
}
if (!DBufLen(&buf)) {
FreeTrig(&trig);
DBufFree(&buf);
return E_EOLN;
}
StrnCpy(trig.passthru, DBufValue(&buf), PASSTHRU_LEN);
DBufFree(&buf);
}
trig.typ = tok.val;
/* Convert some SPECIALs back to plain types */
FixSpecialType(&trig);
dse = LastTriggerDate;
if (!LastTrigValid || PurgeMode) {
FreeTrig(&trig);
return OK;
}
} else {
/* Calculate the trigger date */
dse = ComputeTrigger(trig.scanfrom, &trig, &tim, &r, 1);
if (r) {
if (PurgeMode) {
PurgeEchoLine("%s: %s\n", "#!P! Problem calculating trigger date", GetErr(r));
PurgeEchoLine("%s\n", CurLine);
}
if (r == E_CANT_TRIG && trig.maybe_uncomputable) {
r = OK;
}
FreeTrig(&trig);
return r;
}
}
/* Add to global OMITs if so indicated */
if (trig.addomit) {
r = AddGlobalOmit(dse);
if (r) {
FreeTrig(&trig);
return r;
}
}
if (PurgeMode) {
if (trig.expired || dse < DSEToday) {
if (p->expr_happened) {
if (p->nonconst_expr) {
PurgeEchoLine("%s\n", "#!P: Next line may have expired, but contains non-constant expression");
PurgeEchoLine("%s\n", "#!P: or a relative SCANFROM clause");
PurgeEchoLine("%s\n", CurLine);
} else {
PurgeEchoLine("%s\n", "#!P: Next line has expired, but contains expression... please verify");
PurgeEchoLine("#!P: Expired: %s\n", CurLine);
}
} else {
PurgeEchoLine("#!P: Expired: %s\n", CurLine);
}
} else {
PurgeEchoLine("%s\n", CurLine);
}
FreeTrig(&trig);
return OK;
}
/* Queue the reminder, if necessary */
if (dse == DSEToday &&
!(!IgnoreOnce &&
trig.once != NO_ONCE &&
GetOnceDate() == DSEToday))
QueueReminder(p, &trig, &tim, trig.sched);
/* If we're in daemon mode, do nothing over here */
if (Daemon) {
FreeTrig(&trig);
return OK;
}
r = OK;
if (ShouldTriggerReminder(&trig, &tim, dse, &err)) {
if ( (r=TriggerReminder(p, &trig, &tim, dse, 0, NULL)) ) {
FreeTrig(&trig);
return r;
}
} else {
/* Parse the rest of the line to catch any potential
expression-pasting errors */
if (ParseUntriggered) {
while (ParseChar(p, &r, 0)) {
if (r != 0) {
break;
}
}
}
}
FreeTrig(&trig);
return r;
}
/***************************************************************/
/* */
/* ParseRem */
/* */
/* Given a parse pointer, parse line and fill in a */
/* trigger structure. */
/* */
/***************************************************************/
int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim)
{
register int r;
DynamicBuffer buf;
Token tok;
int y, m, d;
int seen_delta = 0;
DBufInit(&buf);
trig->y = NO_YR;
trig->m = NO_MON;
trig->d = NO_DAY;
trig->wd = NO_WD;
trig->back = NO_BACK;
trig->delta = -DefaultDelta;
trig->until = NO_UNTIL;
trig->rep = NO_REP;
trig->localomit = NO_WD;
trig->skip = NO_SKIP;
trig->once = NO_ONCE;
trig->addomit = 0;
trig->noqueue = 0;
trig->typ = NO_TYPE;
trig->scanfrom = NO_DATE;
trig->from = NO_DATE;
trig->priority = DefaultPrio;
trig->sched[0] = 0;
trig->warn[0] = 0;
trig->omitfunc[0] = 0;
trig->duration_days = 0;
trig->eventstart = NO_TIME;
trig->eventduration = NO_TIME;
trig->maybe_uncomputable = 0;
DBufInit(&(trig->tags));
trig->passthru[0] = 0;
tim->ttime = NO_TIME;
tim->delta = DefaultTDelta;
tim->rep = NO_REP;
tim->duration = NO_TIME;
trig->need_wkday = 0;
trig->adj_for_last = 0;
trig->infos = NULL;
int parsing = 1;
while(parsing) {
/* Read space-delimited string */
r = ParseToken(s, &buf);
if (r) return r;
/* Figure out what we've got */
FindToken(DBufValue(&buf), &tok);
switch(tok.type) {
case T_In:
/* Completely ignored */
DBufFree(&buf);
break;
case T_Ordinal:
DBufFree(&buf);
if (trig->d != NO_DAY) return E_DAY_TWICE;
if (tok.val < 0) {
if (trig->back != NO_BACK) return E_BACK_TWICE;
trig->back = -7;
trig->d = 1;
trig->adj_for_last = 1;
} else {
trig->d = 1 + 7 * tok.val;
}
trig->need_wkday = 1;
break;
case T_Date:
DBufFree(&buf);
if (trig->d != NO_DAY) {
return E_DAY_TWICE;
}
if (trig->m != NO_MON) {
return E_MON_TWICE;
}
if (trig->y != NO_YR) {
return E_YR_TWICE;
}
FromDSE(tok.val, &y, &m, &d);
trig->y = y;
trig->m = m;
trig->d = d;
break;
case T_DateTime:
DBufFree(&buf);
if (trig->d != NO_DAY) return E_DAY_TWICE;
if (trig->m != NO_MON) return E_MON_TWICE;
if (trig->y != NO_YR) return E_YR_TWICE;
FromDSE(tok.val / MINUTES_PER_DAY, &y, &m, &d);
trig->y = y;
trig->m = m;
trig->d = d;
tim->ttime = (tok.val % MINUTES_PER_DAY);
break;
case T_WkDay:
DBufFree(&buf);
if (trig->wd & (1 << tok.val)) return E_WD_TWICE;
trig->wd |= (1 << tok.val);
break;
case T_Month:
DBufFree(&buf);
if (trig->m != NO_MON) return E_MON_TWICE;
trig->m = tok.val;
break;
case T_MaybeUncomputable:
DBufFree(&buf);
trig->maybe_uncomputable = 1;
break;
case T_Skip:
DBufFree(&buf);
if (trig->skip != NO_SKIP) return E_SKIP_ERR;
trig->skip = tok.val;
break;
case T_Priority:
DBufFree(&buf);
r=ParsePriority(s, trig);
if (r) return r;
break;
/* A time implicitly introduces an AT if AT is not explicit */
case T_Time:
DBufFree(&buf);
if (tim->ttime != NO_TIME) return E_TIME_TWICE;
tim->ttime = tok.val;
r = ParseTimeTrig(s, tim);
if (r) return r;
trig->duration_days = ComputeTrigDuration(tim);
break;
case T_At:
DBufFree(&buf);
r=ParseTimeTrig(s, tim);
if (r) return r;
trig->duration_days = ComputeTrigDuration(tim);
break;
case T_Scanfrom:
DBufFree(&buf);
r=ParseScanFrom(s, trig, tok.val);
if (r) return r;
break;
case T_RemType:
DBufFree(&buf);
trig->typ = tok.val;
if (s->isnested) return E_CANT_NEST_RTYPE;
if (trig->typ == PASSTHRU_TYPE) {
r = ParseToken(s, &buf);
if (r) return r;
if (!DBufLen(&buf)) {
DBufFree(&buf);
return E_EOLN;
}
StrnCpy(trig->passthru, DBufValue(&buf), PASSTHRU_LEN);
}
FixSpecialType(trig);
parsing = 0;
break;
case T_Through:
DBufFree(&buf);
if (trig->rep != NO_REP) return E_REP_TWICE;
trig->rep = 1;
r = ParseUntil(s, trig, tok.type);
if (r) return r;
break;
case T_Until:
DBufFree(&buf);
r=ParseUntil(s, trig, tok.type);
if (r) return r;
break;
case T_Number:
DBufFree(&buf);
Eprint("`%d' is not recognized as a year (%d-%d) or a day number (1-31)",
tok.val, BASE, BASE+YR_RANGE);
return E_PARSE_ERR;
case T_Year:
DBufFree(&buf);
if (trig->y != NO_YR) return E_YR_TWICE;
trig->y = tok.val;
break;
case T_Day:
DBufFree(&buf);
if (trig->d != NO_DAY) return E_DAY_TWICE;
trig->d = tok.val;
break;
case T_Rep:
DBufFree(&buf);
if (trig->rep != NO_REP) return E_REP_TWICE;
trig->rep = tok.val;
break;
case T_Delta:
DBufFree(&buf);
if (seen_delta) return E_DELTA_TWICE;
seen_delta = 1;
trig->delta = tok.val;
break;
case T_Back:
DBufFree(&buf);
if (trig->back != NO_BACK) return E_BACK_TWICE;
trig->back = tok.val;
break;
case T_BackAdj:
DBufFree(&buf);
if (trig->back != NO_BACK) return E_BACK_TWICE;
if (trig->d != NO_DAY) return E_DAY_TWICE;
trig->back = tok.val;
trig->d = 1;
trig->adj_for_last = 1;
break;
case T_Once:
DBufFree(&buf);
if (trig->once != NO_ONCE) return E_ONCE_TWICE;
trig->once = ONCE_ONCE;
break;
case T_AddOmit:
DBufFree(&buf);
trig->addomit = 1;
break;
case T_NoQueue:
DBufFree(&buf);
trig->noqueue = 1;
break;
case T_Omit:
DBufFree(&buf);
if (trig->omitfunc[0]) {
Wprint(tr("Warning: OMIT is ignored if you use OMITFUNC"));
}
r = ParseLocalOmit(s, trig);
if (r) return r;
break;
case T_Empty:
DBufFree(&buf);
parsing = 0;
break;
case T_OmitFunc:
if (trig->localomit) {
Wprint(tr("Warning: OMIT is ignored if you use OMITFUNC"));
}
r=ParseToken(s, &buf);
if (r) return r;
StrnCpy(trig->omitfunc, DBufValue(&buf), VAR_NAME_LEN);
strtolower(trig->omitfunc);
/* An OMITFUNC counts as a nonconst_expr! */
s->expr_happened = 1;
s->nonconst_expr = 1;
DBufFree(&buf);
break;
case T_Warn:
r=ParseToken(s, &buf);
if(r) return r;
StrnCpy(trig->warn, DBufValue(&buf), VAR_NAME_LEN);
strtolower(trig->warn);
DBufFree(&buf);
break;
case T_Info:
r = ParseQuotedString(s, &buf);
if (r != OK) {
return r;
}
r = AppendTrigInfo(trig, DBufValue(&buf));
DBufFree(&buf);
if (r) return r;
break;
case T_Tag:
r = ParseToken(s, &buf);
if (r) return r;
if (strchr(DBufValue(&buf), ',')) {
DBufFree(&buf);
return E_PARSE_ERR;
}
AppendTag(&(trig->tags), DBufValue(&buf));
DBufFree(&buf);
break;
case T_Duration:
r = ParseToken(s, &buf);
if (r) return r;
FindToken(DBufValue(&buf), &tok);
DBufFree(&buf);
switch(tok.type) {
case T_Time:
case T_LongTime:
case T_Year:
case T_Day:
case T_Number:
if (tok.val != 0) {
tim->duration = tok.val;
} else {
tim->duration = NO_TIME;
}
trig->duration_days = ComputeTrigDuration(tim);
break;
default:
return E_BAD_TIME;
}
break;
case T_Sched:
r=ParseToken(s, &buf);
if(r) return r;
StrnCpy(trig->sched, DBufValue(&buf), VAR_NAME_LEN);
strtolower(trig->sched);
DBufFree(&buf);
break;
case T_LongTime:
DBufFree(&buf);
return E_BAD_TIME;
break;
default:
if (tok.type == T_Illegal && tok.val < 0) {
Eprint("%s: `%s'", GetErr(-tok.val), DBufValue(&buf));
DBufFree(&buf);
return -tok.val;
}
PushToken(DBufValue(&buf), s);
DBufFree(&buf);
trig->typ = MSG_TYPE;
if (s->isnested) return E_CANT_NEST_RTYPE;
if (!WarnedAboutImplicit && !SuppressImplicitRemWarnings) {
Wprint(tr("Missing REM type; assuming MSG"));
WarnedAboutImplicit = 1;
}
parsing = 0;
break;
}
}
if (trig->need_wkday && trig->wd == NO_WD) {
Eprint("Weekday name(s) required");
return E_PARSE_ERR;
}
/* Adjust month and possibly year */
if (trig->adj_for_last) {
if (trig->m != NO_MON) {
trig->m++;
if (trig->m >= 12) {
trig->m = 0;
if (trig->y != NO_YR) {
trig->y++;
}
}
}
trig->adj_for_last = 0;
}
/* Check for some warning conditions */
if (!s->nonconst_expr) {
if (trig->y != NO_YR && trig->m != NO_MON && trig->d != NO_DAY && trig->until != NO_UNTIL) {
if (DSE(trig->y, trig->m, trig->d) > trig->until) {
Wprint(tr("Warning: UNTIL/THROUGH date earlier than start date"));
}
}
if (trig->from != NO_DATE) {
if (trig->until != NO_UNTIL && trig->until < trig->from) {
Wprint(tr("Warning: UNTIL/THROUGH date earlier than FROM date"));
}
} else if (trig->scanfrom != NO_DATE) {
if (trig->until != NO_UNTIL && trig->until < trig->scanfrom) {
Wprint(tr("Warning: UNTIL/THROUGH date earlier than SCANFROM date"));
}
}
}
if (trig->y != NO_YR && trig->m != NO_MON && trig->d != NO_DAY && trig->until != NO_UNTIL && trig->rep == NO_REP) {
Wprint(tr("Warning: Useless use of UNTIL with fully-specified date and no *rep"));
}
/* Set scanfrom to default if not set explicitly */
if (trig->scanfrom == NO_DATE) {
trig->scanfrom = DSEToday;
}
/* Check that any SCHED / WARN / OMITFUNC functions refer to
their arguments */
check_trigger_function(trig->sched, "SCHED");
check_trigger_function(trig->warn, "WARN");
check_trigger_function(trig->omitfunc, "OMITFUNC");
return OK;
}
/***************************************************************/
/* */
/* ParseTimeTrig - parse the AT part of a timed reminder */
/* */
/***************************************************************/
static int ParseTimeTrig(ParsePtr s, TimeTrig *tim)
{
Token tok;
int r;
int seen_delta = 0;
DynamicBuffer buf;
DBufInit(&buf);
while(1) {
r = ParseToken(s, &buf);
if (r) return r;
FindToken(DBufValue(&buf), &tok);
switch(tok.type) {
case T_Time:
DBufFree(&buf);
if (tim->ttime != NO_TIME) return E_TIME_TWICE;
tim->ttime = tok.val;
break;
case T_Delta:
DBufFree(&buf);
if (seen_delta) return E_DELTA_TWICE;
seen_delta = 1;
tim->delta = (tok.val >= 0) ? tok.val : -tok.val;
break;
case T_Rep:
DBufFree(&buf);
if (tim->rep != NO_REP) return E_REP_TWICE;
tim->rep = tok.val;
break;
default:
if (tok.type == T_Illegal && tok.val < 0) {
Eprint("%s: `%s'", GetErr(-tok.val), DBufValue(&buf));
DBufFree(&buf);
return -tok.val;
}
if (tim->ttime == NO_TIME) return E_EXPECT_TIME;
PushToken(DBufValue(&buf), s);
DBufFree(&buf);
return OK;
}
}
}
/***************************************************************/
/* */
/* ParseLocalOmit - parse the local OMIT portion of a */
/* reminder. */
/* */
/***************************************************************/
static int ParseLocalOmit(ParsePtr s, Trigger *t)
{
Token tok;
int r;
DynamicBuffer buf;
DBufInit(&buf);
while(1) {
r = ParseToken(s, &buf);
if (r) return r;
FindToken(DBufValue(&buf), &tok);
switch(tok.type) {
case T_WkDay:
DBufFree(&buf);
t->localomit |= (1 << tok.val);
break;
default:
if (t->localomit == NO_WD) {
return E_EXPECTING_WEEKDAY;
}
PushToken(DBufValue(&buf), s);
DBufFree(&buf);
return OK;
}
}
}
/***************************************************************/
/* */
/* ParseUntil - parse the UNTIL portion of a reminder */
/* */
/***************************************************************/
static int ParseUntil(ParsePtr s, Trigger *t, int type)
{
int y = NO_YR,
m = NO_MON,
d = NO_DAY;
char const *which;
if (type == T_Until) {
which = "UNTIL";
} else {
which = "THROUGH";
}
Token tok;
int r;
DynamicBuffer buf;
DBufInit(&buf);
if (t->until != NO_UNTIL) return E_UNTIL_TWICE;
while(1) {
r = ParseToken(s, &buf);
if (r) return r;
FindToken(DBufValue(&buf), &tok);
switch(tok.type) {
case T_Year:
DBufFree(&buf);
if (y != NO_YR) {
Eprint("%s: %s", which, GetErr(E_YR_TWICE));
return E_YR_TWICE;
}
y = tok.val;
break;
case T_Month:
DBufFree(&buf);
if (m != NO_MON) {
Eprint("%s: %s", which, GetErr(E_MON_TWICE));
return E_MON_TWICE;
}
m = tok.val;
break;
case T_Day:
DBufFree(&buf);
if (d != NO_DAY) {
Eprint("%s: %s", which, GetErr(E_DAY_TWICE));
return E_DAY_TWICE;
}
d = tok.val;
break;
case T_Date:
DBufFree(&buf);
if (y != NO_YR) {
Eprint("%s: %s", which, GetErr(E_YR_TWICE));
return E_YR_TWICE;
}
if (m != NO_MON) {
Eprint("%s: %s", which, GetErr(E_MON_TWICE));
return E_MON_TWICE;
}
if (d != NO_DAY) {
Eprint("%s: %s", which, GetErr(E_DAY_TWICE));
return E_DAY_TWICE;
}
FromDSE(tok.val, &y, &m, &d);
break;
default:
if (tok.type == T_Illegal && tok.val < 0) {
Eprint("%s: `%s'", GetErr(-tok.val), DBufValue(&buf));
DBufFree(&buf);
return -tok.val;
}
if (y == NO_YR || m == NO_MON || d == NO_DAY) {
Eprint("%s: %s", which, GetErr(E_INCOMPLETE));
DBufFree(&buf);
return E_INCOMPLETE;
}
if (!DateOK(y, m, d)) {
DBufFree(&buf);
return E_BAD_DATE;
}
t->until = DSE(y, m, d);
PushToken(DBufValue(&buf), s);
DBufFree(&buf);
return OK;
}
}
}
/***************************************************************/
/* */
/* ParseScanFrom - parse the FROM/SCANFROM portion */
/* */
/***************************************************************/
static int ParseScanFrom(ParsePtr s, Trigger *t, int type)
{
int y = NO_YR,
m = NO_MON,
d = NO_DAY;
Token tok;
int r;
DynamicBuffer buf;
char const *word;
DBufInit(&buf);
if (type == SCANFROM_TYPE) {
word = "SCANFROM";
} else {
word = "FROM";
}
if (t->scanfrom != NO_DATE) return E_SCAN_TWICE;
while(1) {
r = ParseToken(s, &buf);
if (r) return r;
FindToken(DBufValue(&buf), &tok);
switch(tok.type) {
case T_Year:
DBufFree(&buf);
if (y != NO_YR) {
Eprint("%s: %s", word, GetErr(E_YR_TWICE));
return E_YR_TWICE;
}
y = tok.val;
break;
case T_Month:
DBufFree(&buf);
if (m != NO_MON) {
Eprint("%s: %s", word, GetErr(E_MON_TWICE));
return E_MON_TWICE;
}
m = tok.val;
break;
case T_Day:
DBufFree(&buf);
if (d != NO_DAY) {
Eprint("%s: %s", word, GetErr(E_DAY_TWICE));
return E_DAY_TWICE;
}
d = tok.val;
break;
case T_Date:
DBufFree(&buf);
if (y != NO_YR) {
Eprint("%s: %s", word, GetErr(E_YR_TWICE));
return E_YR_TWICE;
}
if (m != NO_MON) {
Eprint("%s: %s", word, GetErr(E_MON_TWICE));
return E_MON_TWICE;
}
if (d != NO_DAY) {
Eprint("%s: %s", word, GetErr(E_DAY_TWICE));
return E_DAY_TWICE;
}
FromDSE(tok.val, &y, &m, &d);
break;
case T_Back:
DBufFree(&buf);
if (type != SCANFROM_TYPE) {
Eprint("%s: %s", word, GetErr(E_INCOMPLETE));
return E_INCOMPLETE;
}
if (y != NO_YR) {
Eprint("%s: %s", word, GetErr(E_YR_TWICE));
return E_YR_TWICE;
}
if (m != NO_MON) {
Eprint("%s: %s", word, GetErr(E_MON_TWICE));
return E_MON_TWICE;
}
if (d != NO_DAY) {
Eprint("%s: %s", word, GetErr(E_DAY_TWICE));
return E_DAY_TWICE;
}
if (tok.val < 0) {
tok.val = -tok.val;
}
FromDSE(DSEToday - tok.val, &y, &m, &d);
/* Don't purge reminders with a relative scanfrom */
s->expr_happened = 1;
s->nonconst_expr = 1;
break;
default:
if (tok.type == T_Illegal && tok.val < 0) {
Eprint("%s: `%s'", GetErr(-tok.val), DBufValue(&buf));
DBufFree(&buf);
return -tok.val;
}
if (y == NO_YR || m == NO_MON || d == NO_DAY) {
Eprint("%s: %s", word, GetErr(E_INCOMPLETE));
DBufFree(&buf);
return E_INCOMPLETE;
}
if (!DateOK(y, m, d)) {
DBufFree(&buf);
return E_BAD_DATE;
}
t->scanfrom = DSE(y, m, d);
if (type == FROM_TYPE) {
t->from = t->scanfrom;
if (t->scanfrom < DSEToday) {
t->scanfrom = DSEToday;
}
} else {
t->from = NO_DATE;
}
PushToken(DBufValue(&buf), s);
DBufFree(&buf);
return OK;
}
}
}
/***************************************************************/
/* */
/* TriggerReminder */
/* */
/* Trigger the reminder if it's a RUN or MSG type. */
/* */
/***************************************************************/
int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queued, DynamicBuffer *output)
{
int r, y, m, d;
int adjusted_for_newline = 0;
char PrioExpr[VAR_NAME_LEN+25];
char tmpBuf[64];
DynamicBuffer buf, calRow;
DynamicBuffer pre_buf;
char const *s;
char const *msg_command = NULL;
Value v;
if (MsgCommand) {
msg_command = MsgCommand;
}
if (is_queued && QueuedMsgCommand) {
msg_command = QueuedMsgCommand;
}
/* A null command is no command */
if (msg_command && !*msg_command) {
msg_command = NULL;
}
int red = -1, green = -1, blue = -1;
int is_color = 0;
DBufInit(&buf);
DBufInit(&calRow);
DBufInit(&pre_buf);
if (t->typ == RUN_TYPE && RunDisabled) return E_RUN_DISABLED;
if ((t->typ == PASSTHRU_TYPE && StrCmpi(t->passthru, "COLOR") && StrCmpi(t->passthru, "COLOUR")) ||
t->typ == CAL_TYPE ||
t->typ == PS_TYPE ||
t->typ == PSF_TYPE)
return OK;
/* Handle COLOR types */
if (t->typ == PASSTHRU_TYPE && (!StrCmpi(t->passthru, "COLOR") || !StrCmpi(t->passthru, "COLOUR"))) {
/* Strip off three tokens */
r = ParseToken(p, &buf);
sscanf(DBufValue(&buf), "%d", &red);
if (!NextMode) {
DBufPuts(&pre_buf, DBufValue(&buf));
DBufPutc(&pre_buf, ' ');
}
DBufFree(&buf);
if (r) return r;
r = ParseToken(p, &buf);
sscanf(DBufValue(&buf), "%d", &green);
if (!NextMode) {
DBufPuts(&pre_buf, DBufValue(&buf));
DBufPutc(&pre_buf, ' ');
}
DBufFree(&buf);
if (r) return r;
r = ParseToken(p, &buf);
sscanf(DBufValue(&buf), "%d", &blue);
if (!NextMode) {
DBufPuts(&pre_buf, DBufValue(&buf));
DBufPutc(&pre_buf, ' ');
}
DBufFree(&buf);
if (r) return r;
t->typ = MSG_TYPE;
}
/* If it's a MSG-type reminder, and no -k option was used, issue the banner. */
if ((t->typ == MSG_TYPE || t->typ == MSF_TYPE)
&& !DidMsgReminder && !NextMode && !msg_command && !is_queued) {
DidMsgReminder = 1;
if (!DoSubstFromString(DBufValue(&Banner), &buf,
DSEToday, NO_TIME) &&
DBufLen(&buf)) {
printf("%s\n", DBufValue(&buf));
}
DBufFree(&buf);
}
/* If it's NextMode, process as a ADVANCE_MODE-type entry, and issue
simple-calendar format. */
if (NextMode) {
if ( (r=DoSubst(p, &buf, t, tim, dse, ADVANCE_MODE)) ) return r;
if (!DBufLen(&buf)) {
DBufFree(&buf);
DBufFree(&pre_buf);
return OK;
}
FromDSE(dse, &y, &m, &d);
snprintf(tmpBuf, sizeof(tmpBuf), "%04d/%02d/%02d ", y, m+1, d);
if (DBufPuts(&calRow, tmpBuf) != OK) {
DBufFree(&calRow);
DBufFree(&pre_buf);
return E_NO_MEM;
}
/* If DoSimpleCalendar==1, output *all* simple calendar fields */
if (DoSimpleCalendar) {
/* ignore passthru field when in NextMode */
if (DBufPuts(&calRow, "* ") != OK) {
DBufFree(&calRow);
DBufFree(&pre_buf);
return E_NO_MEM;
}
if (*DBufValue(&(t->tags))) {
DBufPuts(&calRow, DBufValue(&(t->tags)));
DBufPutc(&calRow, ' ');
} else {
DBufPuts(&calRow, "* ");
}
if (tim->duration != NO_TIME) {
snprintf(tmpBuf, sizeof(tmpBuf), "%d ", tim->duration);
} else {
snprintf(tmpBuf, sizeof(tmpBuf), "* ");
}
if (DBufPuts(&calRow, tmpBuf) != OK) {
DBufFree(&calRow);
DBufFree(&pre_buf);
return E_NO_MEM;
}
if (tim->ttime != NO_TIME) {
snprintf(tmpBuf, sizeof(tmpBuf), "%d ", tim->ttime);
} else {
snprintf(tmpBuf, sizeof(tmpBuf), "* ");
}
if (DBufPuts(&calRow, tmpBuf) != OK) {
DBufFree(&calRow);
DBufFree(&pre_buf);
return E_NO_MEM;
}
}
if (DBufPuts(&calRow, SimpleTime(tim->ttime)) != OK) {
DBufFree(&calRow);
DBufFree(&pre_buf);
return E_NO_MEM;
}
r = OK;
if (output) {
if (DBufPuts(output, DBufValue(&calRow)) != OK) r = E_NO_MEM;
if (DBufPuts(output, DBufValue(&pre_buf)) != OK) r = E_NO_MEM;
if (DBufPuts(output, DBufValue(&buf)) != OK) r = E_NO_MEM;
} else {
printf("%s%s%s\n", DBufValue(&calRow), DBufValue(&pre_buf), DBufValue(&buf));
}
DBufFree(&buf);
DBufFree(&pre_buf);
DBufFree(&calRow);
return r;
}
/* Correct colors */
if (UseVTColors) {
if (red == -1 && green == -1 && blue == -1) {
if (DefaultColorR != -1 && DefaultColorG != -1 && DefaultColorB != -1) {
red = DefaultColorR;
green = DefaultColorG;
blue = DefaultColorB;
}
}
if (red >= 0 && green >= 0 && blue >= 0) {
is_color = 1;
if (red > 255) red = 255;
if (green > 255) green = 255;
if (blue > 255) blue = 255;
}
}
/* Put the substituted string into the substitution buffer */
/* Don't use msgprefix() on RUN-type reminders */
if (t->typ != RUN_TYPE) {
if (UserFuncExists("msgprefix") == 1) {
snprintf(PrioExpr, sizeof(PrioExpr), "msgprefix(%d)", t->priority);
s = PrioExpr;
r = EvalExpr(&s, &v, NULL);
if (!r) {
if (!DoCoerce(STR_TYPE, &v)) {
if (is_color) {
DBufPuts(&buf, Colorize(red, green, blue, 0, 1));
}
if (DBufPuts(&buf, v.v.str) != OK) {
DBufFree(&buf);
DestroyValue(v);
return E_NO_MEM;
}
}
DestroyValue(v);
}
}
}
if (is_color) {
DBufPuts(&buf, Colorize(red, green, blue, 0, 1));
}
if ( (r=DoSubst(p, &buf, t, tim, dse, NORMAL_MODE)) ) return r;
if (t->typ != RUN_TYPE) {
if (UserFuncExists("msgsuffix") == 1) {
snprintf(PrioExpr, sizeof(PrioExpr), "msgsuffix(%d)", t->priority);
s = PrioExpr;
r = EvalExpr(&s, &v, NULL);
if (!r) {
if (!DoCoerce(STR_TYPE, &v)) {
/* Hack: If MsgSuffix starts with a backspace, move it before the newline! */
if (*v.v.str == '\b') {
if (DBufLen(&buf)) {
if (DBufValue(&buf)[DBufLen(&buf)-1] == '\n') {
/* VIOLATION of encapsulation! */
DBufValue(&buf)[DBufLen(&buf)-1] = 0;
buf.len--;
adjusted_for_newline = 1;
}
}
}
if (is_color) {
DBufPuts(&buf, Colorize(red, green, blue, 0, 1));
}
if (*v.v.str == '\b') {
r = DBufPuts(&buf, v.v.str+1);
} else {
r = DBufPuts(&buf, v.v.str);
}
if (r != OK) {
DBufFree(&buf);
DestroyValue(v);
return E_NO_MEM;
}
}
DestroyValue(v);
}
}
}
if (is_color) {
DBufPuts(&buf, Decolorize());
}
if (adjusted_for_newline) {
DBufPutc(&buf, '\n');
}
if ((!msg_command && t->typ == MSG_TYPE) || t->typ == MSF_TYPE) {
if (DBufPutc(&buf, '\n') != OK) {
DBufFree(&buf);
return E_NO_MEM;
}
}
/* If this is a dupe and we are de-duping, do nothing */
if (DedupeReminders) {
if (ShouldDedupe(dse, tim->ttime, DBufValue(&buf))) {
DBufFree(&buf);
return OK;
}
}
/* If we are sorting, just queue it up in the sort buffer */
if (SortByDate) {
if (InsertIntoSortBuffer(dse, tim->ttime, DBufValue(&buf),
t->typ, t->priority) == OK) {
DBufFree(&buf);
NumTriggered++;
return OK;
}
}
/* If we didn't insert the reminder into the sort buffer, issue the
reminder now. */
switch(t->typ) {
case MSG_TYPE:
case PASSTHRU_TYPE:
if (msg_command) {
DoMsgCommand(msg_command, DBufValue(&buf), is_queued);
} else {
if (output) {
DBufPuts(output, DBufValue(&buf));
} else {
/* Add a space before "NOTE endreminder" */
if (IsServerMode() && !strncmp(DBufValue(&buf), "NOTE endreminder", 16)) {
printf(" %s", DBufValue(&buf));
} else {
printf("%s", DBufValue(&buf));
}
}
}
break;
case MSF_TYPE:
FillParagraph(DBufValue(&buf), output);
break;
case RUN_TYPE:
System(DBufValue(&buf), is_queued);
break;
default: /* Unknown/illegal type? */
DBufFree(&buf);
return E_SWERR;
}
DBufFree(&buf);
NumTriggered++;
return OK;
}
/***************************************************************/
/* */
/* ShouldTriggerReminder */
/* */
/* Return 1 if we should trigger a reminder, based on today's */
/* date and the trigger. Return 0 if reminder should not be */
/* triggered. Sets *err non-zero in event of an error. */
/* */
/***************************************************************/
int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int dse, int *err)
{
int r, omit;
*err = 0;
/* Handle the ONCE modifier in the reminder. */
if (!IgnoreOnce && t->once !=NO_ONCE && GetOnceDate() == DSEToday)
return 0;
if (dse < DSEToday) return 0;
/* Don't trigger timed reminders if DontIssueAts is true, and if the
reminder is for today */
if (dse == DSEToday && DontIssueAts && tim->ttime != NO_TIME) {
if (DontIssueAts > 1) {
/* If two or more -a options, then *DO* issue ats that are in the
future */
if (tim->ttime < MinutesPastMidnight(0)) {
return 0;
}
} else {
return 0;
}
}
/* If "infinite delta" option is chosen, always trigger future reminders */
if (InfiniteDelta || NextMode) return 1;
/* If there's a "warn" function, it overrides any deltas except
* DeltaOverride*/
if (t->warn[0] != 0) {
if (DeltaOverride > 0) {
if (dse <= DSEToday + DeltaOverride) {
return 1;
}
}
return ShouldTriggerBasedOnWarn(t, dse, err);
}
/* Zero delta */
if (DeltaOverride < 0) {
return dse == DSEToday;
}
/* Move back by delta days, if any */
if (DeltaOverride) {
/* A positive DeltaOverride takes precedence over everything */
dse = dse - DeltaOverride;
} else if (t->delta != NO_DELTA) {
if (t->delta < 0)
dse = dse + t->delta;
else {
int iter = 0;
int max = MaxSatIter;
r = t->delta;
if (max < r*2) max = r*2;
while(iter++ < max) {
if (!r || (dse <= DSEToday)) {
break;
}
dse--;
*err = IsOmitted(dse, t->localomit, t->omitfunc, &omit);
if (*err) return 0;
if (!omit) r--;
}
if (iter > max) {
*err = E_CANT_TRIG;
Eprint("Delta: Bad OMITFUNC? %s", GetErr(E_CANT_TRIG));
return 0;
}
}
}
/* Should we trigger the reminder? */
return (dse <= DSEToday);
}
/***************************************************************/
/* */
/* DoSatRemind */
/* */
/* Do the "satisfying..." remind calculation. */
/* */
/***************************************************************/
int DoSatRemind(Trigger *trig, TimeTrig *tt, ParsePtr p)
{
int iter, dse, r, start;
Value v;
expr_node *sat_node;
int nonconst = 0;
sat_node = ParseExpr(p, &r);
if (r != OK) {
return r;
}
if (!sat_node) {
return E_SWERR;
}
/* Diagnose if SAT_NODE does not reference trigdate */
ensure_satnode_mentions_trigdate(sat_node);
iter = 0;
start = trig->scanfrom;
while (iter++ < MaxSatIter) {
dse = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, 0);
if (r) {
free_expr_tree(sat_node);
if (r == E_CANT_TRIG) return OK; else return r;
}
if (dse != start && trig->duration_days) {
dse = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, trig->duration_days);
if (r) {
free_expr_tree(sat_node);
if (r == E_CANT_TRIG) return OK; else return r;
}
} else if (dse == start) {
if (tt->ttime != NO_TIME) {
trig->eventstart = MINUTES_PER_DAY * r + tt->ttime;
if (tt->duration != NO_TIME) {
trig->eventduration = tt->duration;
}
}
SaveAllTriggerInfo(trig, tt, dse, tt->ttime, 1);
}
if (dse == -1) {
free_expr_tree(sat_node);
return E_EXPIRED;
}
r = evaluate_expression(sat_node, NULL, &v, &nonconst);
if (r) {
free_expr_tree(sat_node);
return r;
}
if (v.type != INT_TYPE && v.type != STR_TYPE) {
free_expr_tree(sat_node);
return E_BAD_TYPE;
}
if ((v.type == INT_TYPE && v.v.val) ||
(v.type == STR_TYPE && *v.v.str)) {
AdjustTriggerForDuration(trig->scanfrom, dse, trig, tt, 1);
if (DebugFlag & DB_PRTTRIG) {
int y, m, d;
FromDSE(LastTriggerDate, &y, &m, &d);
fprintf(ErrFp, "%s(%d): Trig(satisfied) = %s, %d %s, %d",
FileName, LineNo,
get_day_name(LastTriggerDate % 7),
d,
get_month_name(m),
y);
if (tt->ttime != NO_TIME) {
fprintf(ErrFp, " AT %02d:%02d",
(tt->ttime / 60),
(tt->ttime % 60));
if (tt->duration != NO_TIME) {
fprintf(ErrFp, " DURATION %02d:%02d",
(tt->duration / 60),
(tt->duration % 60));
}
}
fprintf(ErrFp, "\n");
}
free_expr_tree(sat_node);
return OK;
}
if (dse+trig->duration_days < start) {
start++;
} else {
start = dse+trig->duration_days+1;
}
}
LastTrigValid = 0;
free_expr_tree(sat_node);
return E_CANT_TRIG;
}
/***************************************************************/
/* */
/* ParsePriority - parse the PRIORITY portion of a reminder */
/* */
/***************************************************************/
static int ParsePriority(ParsePtr s, Trigger *t)
{
int p, r;
char const *u;
DynamicBuffer buf;
DBufInit(&buf);
r = ParseToken(s, &buf);
if(r) return r;
u = DBufValue(&buf);
if (!isdigit(*u)) {
DBufFree(&buf);
return E_EXPECTING_NUMBER;
}
p = 0;
while (isdigit(*u)) {
p = p*10 + *u - '0';
u++;
}
if (*u) {
DBufFree(&buf);
return E_EXPECTING_NUMBER;
}
DBufFree(&buf);
/* Tricky! The only way p can be < 0 is if overflow occurred; thus,
E2HIGH is indeed the appropriate error message. */
if (p<0 || p>9999) return E_2HIGH;
t->priority = p;
return OK;
}
/***************************************************************/
/* */
/* DoMsgCommand */
/* */
/* Execute the '-k' command, escaping shell chars in message. */
/* */
/***************************************************************/
int DoMsgCommand(char const *cmd, char const *msg, int is_queued)
{
int r;
int i, l;
DynamicBuffer execBuffer;
DynamicBuffer buf;
DBufInit(&buf);
DBufInit(&execBuffer);
/* Escape shell characters in msg */
if (ShellEscape(msg, &buf) != OK) {
r = E_NO_MEM;
goto finished;
}
msg = DBufValue(&buf);
/* Do "%s" substitution */
l = strlen(cmd);
for (i=0; i<l; i++) {
if (cmd[i] == '%' && cmd[i+1] == 's') {
++i;
if (DBufPuts(&execBuffer, msg) != OK) {
r = E_NO_MEM;
goto finished;
}
} else {
if (DBufPutc(&execBuffer, cmd[i]) != OK) {
r = E_NO_MEM;
goto finished;
}
}
}
r = OK;
System(DBufValue(&execBuffer), is_queued);
finished:
DBufFree(&buf);
DBufFree(&execBuffer);
return r;
}
/***************************************************************/
/* */
/* ShouldTriggerBasedOnWarn */
/* */
/* Determine whether to trigger a reminder based on its WARN */
/* function. */
/* */
/***************************************************************/
static int ShouldTriggerBasedOnWarn(Trigger *t, int dse, int *err)
{
char buffer[VAR_NAME_LEN+32];
int i;
char const *s;
int r, omit;
Value v;
int lastReturnVal = 0; /* Silence compiler warning */
/* If no proper function exists, barf... */
if (UserFuncExists(t->warn) != 1) {
Eprint("%s: `%s'", GetErr(M_BAD_WARN_FUNC), t->warn);
return (dse == DSEToday);
}
for (i=1; ; i++) {
snprintf(buffer, sizeof(buffer), "%s(%d)", t->warn, i);
s = buffer;
r = EvalExpr(&s, &v, NULL);
if (r) {
Eprint("%s: `%s': %s", GetErr(M_BAD_WARN_FUNC),
t->warn, GetErr(r));
return (dse == DSEToday);
}
if (v.type != INT_TYPE) {
DestroyValue(v);
Eprint("%s: `%s': %s", GetErr(M_BAD_WARN_FUNC),
t->warn, GetErr(E_BAD_TYPE));
return (dse == DSEToday);
}
/* If absolute value of return is not monotonically
decreasing, exit */
if (i > 1 && abs(v.v.val) >= lastReturnVal) {
return (dse == DSEToday);
}
lastReturnVal = abs(v.v.val);
/* Positive values: Just subtract. Negative values:
skip omitted days. */
if (v.v.val >= 0) {
if (DSEToday + v.v.val == dse) return 1;
} else {
int j = dse;
int iter = 0;
int max = MaxSatIter;
if (max < v.v.val * 2) max = v.v.val*2;
while(iter++ <= max) {
j--;
*err = IsOmitted(j, t->localomit, t->omitfunc, &omit);
if (*err) return 0;
if (!omit) v.v.val++;
if (!v.v.val) {
break;
}
}
if (iter > max) {
Eprint("Delta: Bad OMITFUNC? %s", GetErr(E_CANT_TRIG));
return 0;
}
if (j == DSEToday) return 1;
}
}
}
void FixSpecialType(Trigger *t)
{
if (t->typ != PASSTHRU_TYPE) {
return;
}
/* Convert SPECIAL MSG / MSF / RUN / CAL to just plain MSG / MSF / etc */
if (!StrCmpi(t->passthru, "MSG")) {
t->typ = MSG_TYPE;
} else if (!StrCmpi(t->passthru, "MSF")) {
t->typ = MSF_TYPE;
} else if (!StrCmpi(t->passthru, "RUN")) {
t->typ = RUN_TYPE;
} else if (!StrCmpi(t->passthru, "CAL")) {
t->typ = CAL_TYPE;
} else if (!StrCmpi(t->passthru, "PS")) {
t->typ = PS_TYPE;
} else if (!StrCmpi(t->passthru, "PSFILE")) {
t->typ = PSF_TYPE;
}
}
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