path: root/src/pcal.c

/*
 * Calcurse - text-based organizer
 *
 * Copyright (c) 2004-2013 calcurse Development Team <misc@calcurse.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the
 *        following disclaimer in the documentation and/or other
 *        materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Send your feedback or comments to : misc@calcurse.org
 * Calcurse home page : http://calcurse.org
 *
 */

#include <sys/types.h>

#include "calcurse.h"

/* Static functions used to add export functionalities. */
static void pcal_export_header(FILE *);
static void pcal_export_recur_events(FILE *);
static void pcal_export_events(FILE *);
static void pcal_export_recur_apoints(FILE *);
static void pcal_export_apoints(FILE *);
static void pcal_export_todo(FILE *);
static void pcal_export_footer(FILE *);

/* Type definition for callbacks to export functions. */
typedef void (*cb_dump_t) (FILE *, long, long, char *);

/*
 * Travel through each occurence of an item, and execute the given callback
 * (mainly used to export data).
 */
static void
foreach_date_dump(const long date_end, struct rpt *rpt, llist_t * exc,
                  long item_first_date, long item_dur, char *item_mesg,
                  cb_dump_t cb_dump, FILE * stream)
{
  long date, item_time;
  struct tm lt;
  time_t t;

  t = item_first_date;
  localtime_r(&t, &lt);
  lt.tm_hour = lt.tm_min = lt.tm_sec = 0;
  lt.tm_isdst = -1;
  date = mktime(&lt);
  item_time = item_first_date - date;

  while (date <= date_end && date <= rpt->until) {
    if (recur_item_inday(item_first_date, item_dur, exc, rpt->type,
                         rpt->freq, rpt->until, date)) {
      (*cb_dump) (stream, date + item_time, item_dur, item_mesg);
    }
    switch (rpt->type) {
    case RECUR_DAILY:
      date = date_sec_change(date, 0, rpt->freq);
      break;
    case RECUR_WEEKLY:
      date = date_sec_change(date, 0, rpt->freq * WEEKINDAYS);
      break;
    case RECUR_MONTHLY:
      date = date_sec_change(date, rpt->freq, 0);
      break;
    case RECUR_YEARLY:
      date = date_sec_change(date, rpt->freq * 12, 0);
      break;
    default:
      EXIT(_("incoherent repetition type"));
      /* NOTREACHED */
      break;
    }
  }
}

static void pcal_export_header(FILE * stream)
{
  fputs("# calcurse pcal export\n", stream);
  fputs("\n# =======\n# options\n# =======\n", stream);
  fprintf(stream, "opt -A -K -l -m -F %s\n",
          ui_calendar_week_begins_on_monday()? "Monday" : "Sunday");
  fputs("# Display week number (i.e. 1-52) on every Monday\n", stream);
  fprintf(stream, "all monday in all week %%w\n");
  fputc('\n', stream);
}

static void pcal_export_footer(FILE * stream)
{
}

/* Format and dump event data to a pcal formatted file. */
static void
pcal_dump_event(FILE * stream, long event_date, long event_dur,
                char *event_mesg)
{
  char pcal_date[BUFSIZ];

  date_sec2date_fmt(event_date, "%b %d", pcal_date);
  fprintf(stream, "%s  %s\n", pcal_date, event_mesg);
}

/* Format and dump appointment data to a pcal formatted file. */
static void
pcal_dump_apoint(FILE * stream, long apoint_date, long apoint_dur,
                 char *apoint_mesg)
{
  char pcal_date[BUFSIZ], pcal_beg[BUFSIZ], pcal_end[BUFSIZ];

  date_sec2date_fmt(apoint_date, "%b %d", pcal_date);
  date_sec2date_fmt(apoint_date, "%R", pcal_beg);
  date_sec2date_fmt(apoint_date + apoint_dur, "%R", pcal_end);
  fprintf(stream, "%s  ", pcal_date);
  fprintf(stream, "(%s -> %s) %s\n", pcal_beg, pcal_end, apoint_mesg);
}

static void pcal_export_recur_events(FILE * stream)
{
  llist_item_t *i;
  char pcal_date[BUFSIZ];

  fputs("\n# =============", stream);
  fputs("\n# Recur. Events", stream);
  fputs("\n# =============\n", stream);
  fputs("# (pcal does not support from..until dates specification\n", stream);

  LLIST_FOREACH(&recur_elist, i) {
    struct recur_event *rev = LLIST_GET_DATA(i);
    if (rev->rpt->until == 0 && rev->rpt->freq == 1) {
      switch (rev->rpt->type) {
      case RECUR_DAILY:
        date_sec2date_fmt(rev->day, "%b %d", pcal_date);
        fprintf(stream, "all day on_or_after %s  %s\n", pcal_date, rev->mesg);
        break;
      case RECUR_WEEKLY:
        date_sec2date_fmt(rev->day, "%a", pcal_date);
        fprintf(stream, "all %s on_or_after ", pcal_date);
        date_sec2date_fmt(rev->day, "%b %d", pcal_date);
        fprintf(stream, "%s  %s\n", pcal_date, rev->mesg);
        break;
      case RECUR_MONTHLY:
        date_sec2date_fmt(rev->day, "%d", pcal_date);
        fprintf(stream, "day on all %s  %s\n", pcal_date, rev->mesg);
        break;
      case RECUR_YEARLY:
        date_sec2date_fmt(rev->day, "%b %d", pcal_date);
        fprintf(stream, "%s  %s\n", pcal_date, rev->mesg);
        break;
      default:
        EXIT(_("incoherent repetition type"));
      }
    } else {
      const long YEAR_START = ui_calendar_start_of_year();
      const long YEAR_END = ui_calendar_end_of_year();

      if (rev->day < YEAR_END && rev->day > YEAR_START)
        foreach_date_dump(YEAR_END, rev->rpt, &rev->exc, rev->day, 0,
                          rev->mesg, (cb_dump_t) pcal_dump_event, stream);
    }
  }
}

static void pcal_export_events(FILE * stream)
{
  llist_item_t *i;

  fputs("\n# ======\n# Events\n# ======\n", stream);
  LLIST_FOREACH(&eventlist, i) {
    struct event *ev = LLIST_TS_GET_DATA(i);
    pcal_dump_event(stream, ev->day, 0, ev->mesg);
  }
  fputc('\n', stream);
}

static void pcal_export_recur_apoints(FILE * stream)
{
  llist_item_t *i;
  char pcal_date[BUFSIZ], pcal_beg[BUFSIZ], pcal_end[BUFSIZ];

  fputs("\n# ==============", stream);
  fputs("\n# Recur. Apoints", stream);
  fputs("\n# ==============\n", stream);
  fputs("# (pcal does not support from..until dates specification\n", stream);

  LLIST_TS_FOREACH(&recur_alist_p, i) {
    struct recur_apoint *rapt = LLIST_TS_GET_DATA(i);

    if (rapt->rpt->until == 0 && rapt->rpt->freq == 1) {
      date_sec2date_fmt(rapt->start, "%R", pcal_beg);
      date_sec2date_fmt(rapt->start + rapt->dur, "%R", pcal_end);
      switch (rapt->rpt->type) {
      case RECUR_DAILY:
        date_sec2date_fmt(rapt->start, "%b %d", pcal_date);
        fprintf(stream, "all day on_or_after %s  (%s -> %s) %s\n",
                pcal_date, pcal_beg, pcal_end, rapt->mesg);
        break;
      case RECUR_WEEKLY:
        date_sec2date_fmt(rapt->start, "%a", pcal_date);
        fprintf(stream, "all %s on_or_after ", pcal_date);
        date_sec2date_fmt(rapt->start, "%b %d", pcal_date);
        fprintf(stream, "%s  (%s -> %s) %s\n", pcal_date, pcal_beg,
                pcal_end, rapt->mesg);
        break;
      case RECUR_MONTHLY:
        date_sec2date_fmt(rapt->start, "%d", pcal_date);
        fprintf(stream, "day on all %s  (%s -> %s) %s\n", pcal_date,
                pcal_beg, pcal_end, rapt->mesg);
        break;
      case RECUR_YEARLY:
        date_sec2date_fmt(rapt->start, "%b %d", pcal_date);
        fprintf(stream, "%s  (%s -> %s) %s\n", pcal_date, pcal_beg,
                pcal_end, rapt->mesg);
        break;
      default:
        EXIT(_("incoherent repetition type"));
      }
    } else {
      const long YEAR_START = ui_calendar_start_of_year();
      const long YEAR_END = ui_calendar_end_of_year();

      if (rapt->start < YEAR_END && rapt->start > YEAR_START)
        foreach_date_dump(YEAR_END, rapt->rpt, &rapt->exc, rapt->start,
                          rapt->dur, rapt->mesg,
                          (cb_dump_t) pcal_dump_apoint, stream);
    }
  }
}

static void pcal_export_apoints(FILE * stream)
{
  llist_item_t *i;

  fputs("\n# ============\n# Appointments\n# ============\n", stream);
  LLIST_TS_LOCK(&alist_p);
  LLIST_TS_FOREACH(&alist_p, i) {
    struct apoint *apt = LLIST_TS_GET_DATA(i);
    pcal_dump_apoint(stream, apt->start, apt->dur, apt->mesg);
  }
  LLIST_TS_UNLOCK(&alist_p);
  fputc('\n', stream);
}

static void pcal_export_todo(FILE * stream)
{
  llist_item_t *i;

  fputs("#\n# Todos\n#\n", stream);
  LLIST_FOREACH(&todolist, i) {
    struct todo *todo = LLIST_TS_GET_DATA(i);
    if (todo->id < 0)           /* completed items */
      continue;

    fputs("note all  ", stream);
    fprintf(stream, "%d. %s\n", todo->id, todo->mesg);
  }
  fputc('\n', stream);
}

/* Export calcurse data. */
void pcal_export_data(FILE * stream)
{
  pcal_export_header(stream);
  pcal_export_recur_events(stream);
  pcal_export_events(stream);
  pcal_export_recur_apoints(stream);
  pcal_export_apoints(stream);
  pcal_export_todo(stream);
  pcal_export_footer(stream);
}