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calcurse-edge/src/utils.c

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/* $calcurse: utils.c,v 1.78 2009/07/23 18:33:21 culot Exp $ */
/*
* Calcurse - text-based organizer
*
* Copyright (c) 2004-2009 Frederic Culot <frederic@culot.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 : calcurse@culot.org
* Calcurse home page : http://culot.org/calcurse
*
*/
#include <time.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <errno.h>
#include "utils.h"
#include "i18n.h"
#include "wins.h"
#include "custom.h"
#include "keys.h"
#include "io.h"
#include "recur.h"
#include "event.h"
#include "apoint.h"
#include "todo.h"
#include "day.h"
#include "keys.h"
#include "dmon.h"
#include "mem.h"
/* General routine to exit calcurse properly. */
void
exit_calcurse (int status)
{
int remove_lock;
if (ui_mode == UI_CURSES)
{
notify_stop_main_thread ();
clear ();
refresh ();
endwin ();
ui_mode = UI_CMDLINE;
remove_lock = 1;
}
else
remove_lock = 0;
calendar_stop_date_thread ();
io_stop_psave_thread ();
day_free_list ();
event_llist_free ();
event_free_bkp (ERASE_FORCE);
apoint_llist_free ();
apoint_free_bkp (ERASE_FORCE);
recur_apoint_llist_free ();
recur_event_llist_free ();
recur_apoint_free_bkp (ERASE_FORCE);
recur_event_free_bkp (ERASE_FORCE);
todo_free_list ();
notify_free_app ();
keys_free ();
mem_stats ();
if (remove_lock)
io_unset_lock ();
dmon_start (status);
exit (status);
}
/* Function to exit on internal error. */
void
fatalbox (const char *errmsg)
{
WINDOW *errwin;
char *label = _("/!\\ INTERNAL ERROR /!\\");
char *reportmsg = _("Please report the following bug:");
const int WINROW = 10;
const int WINCOL = col - 2;
const int MSGLEN = WINCOL - 2;
char msg[MSGLEN];
if (errmsg == 0)
return;
(void)strncpy (msg, errmsg, MSGLEN);
errwin = newwin (WINROW, WINCOL, (row - WINROW) / 2, (col - WINCOL) / 2);
custom_apply_attr (errwin, ATTR_HIGHEST);
box (errwin, 0, 0);
wins_show (errwin, label);
mvwprintw (errwin, 3, 1, reportmsg);
mvwprintw (errwin, 5, (WINCOL - strlen (msg)) / 2, "%s", msg);
custom_remove_attr (errwin, ATTR_HIGHEST);
wrefresh (errwin);
(void)wgetch (errwin);
delwin (errwin);
doupdate ();
}
void
warnbox (const char *msg)
{
WINDOW *warnwin;
char *label = "/!\\";
const int WINROW = 10;
const int WINCOL = col - 2;
const int MSGLEN = WINCOL - 2;
char displmsg[MSGLEN];
if (msg == 0)
return;
(void)strncpy (displmsg, msg, MSGLEN);
warnwin = newwin (WINROW, WINCOL, (row - WINROW) / 2, (col - WINCOL) / 2);
custom_apply_attr (warnwin, ATTR_HIGHEST);
box (warnwin, 0, 0);
wins_show (warnwin, label);
mvwprintw (warnwin, 5, (WINCOL - strlen (displmsg)) / 2, "%s", displmsg);
custom_remove_attr (warnwin, ATTR_HIGHEST);
wrefresh (warnwin);
(void)wgetch (warnwin);
delwin (warnwin);
doupdate ();
}
/*
* Print a message in the status bar.
* Message texts for first line and second line are to be provided.
*/
void
status_mesg (char *mesg_line1, char *mesg_line2)
{
wins_erase_status_bar ();
custom_apply_attr (win[STA].p, ATTR_HIGHEST);
mvwprintw (win[STA].p, 0, 0, mesg_line1);
mvwprintw (win[STA].p, 1, 0, mesg_line2);
custom_remove_attr (win[STA].p, ATTR_HIGHEST);
}
/* Erase part of a window. */
void
erase_window_part (WINDOW *win, int first_col, int first_row, int last_col,
int last_row)
{
int c, r;
for (r = first_row; r <= last_row; r++)
{
for (c = first_col; c <= last_col; c++)
{
mvwprintw (win, r, c, " ");
}
}
wnoutrefresh (win);
}
/* draws a popup window */
WINDOW *
popup (int pop_row, int pop_col, int pop_y, int pop_x, char *title, char *msg,
int hint)
{
char *any_key = _("Press any key to continue...");
char label[BUFSIZ];
WINDOW *popup_win;
const int MSGXPOS = 5;
popup_win = newwin (pop_row, pop_col, pop_y, pop_x);
keypad (popup_win, TRUE);
if (msg)
mvwprintw (popup_win, MSGXPOS, (pop_col - strlen (msg)) / 2, "%s", msg);
custom_apply_attr (popup_win, ATTR_HIGHEST);
box (popup_win, 0, 0);
(void)snprintf (label, BUFSIZ, "%s", title);
wins_show (popup_win, label);
if (hint)
mvwprintw (popup_win, pop_row - 2, pop_col - (strlen (any_key) + 1), "%s",
any_key);
custom_remove_attr (popup_win, ATTR_HIGHEST);
wrefresh (popup_win);
doupdate ();
return popup_win;
}
/* prints in middle of a panel */
void
print_in_middle (WINDOW *win, int starty, int startx, int width, char *string)
{
int length, x, y;
float temp;
if (win == NULL)
win = stdscr;
getyx (win, y, x);
if (startx != 0)
x = startx;
if (starty != 0)
y = starty;
if (width == 0)
width = 80;
length = strlen (string);
temp = (width - length) / 2;
x = startx + (int) temp;
custom_apply_attr (win, ATTR_HIGHEST);
mvwprintw (win, y, x, "%s", string);
custom_remove_attr (win, ATTR_HIGHEST);
}
/*
* Draw the cursor at the correct position in string.
* As echoing is not set, we need to know the string we are working on to
* handle display correctly.
*/
static void
showcursor (WINDOW *win, int y, int pos, char *str, int l, int offset)
{
char *nc;
nc = str + pos;
wmove (win, y, pos - offset);
(pos >= l) ? waddch (win, SPACE | A_REVERSE) : waddch (win, *nc | A_REVERSE);
}
/* Print the string at the desired position. */
static void
showstring (WINDOW *win, int y, int x, char *str, int len, int pos)
{
const int rec = 30, border = 3;
const int max_col = col - border, max_len = max_col - rec;
int page, max_page, offset, c = 0;
char *orig;
orig = str;
max_page = (len - rec) / max_len;
page = (pos - rec) / max_len;
offset = page * max_len;
str += offset;
mvwaddnstr (win, y, x, str, MIN (len, max_col));
wclrtoeol (win);
if (page > 0 && page < max_page)
{
c = '*';
}
else if (page > 0)
{
c = '<';
}
else if (page < max_page)
{
c = '>';
}
else
c = 0;
mvwprintw (win, y, col - 1, "%c", c);
showcursor (win, y, pos, orig, len, offset);
}
/* Delete a character at the given position in string. */
static void
del_char (int pos, char *str)
{
int len;
str += pos;
len = strlen (str) + 1;
memmove (str, str + 1, len);
}
/* Add a character at the given position in string. */
static char *
add_char (int pos, int ch, char *str)
{
int len;
str += pos;
len = strlen (str) + 1;
memmove (str + 1, str, len);
*str = ch;
return (str += len);
}
/*
* Getstring allows to get user input and to print it on a window,
* even if noecho() is on. This function is also used to modify an existing
* text (the variable string can be non-NULL).
* We need to do the echoing manually because of the multi-threading
* environment, otherwise the cursor would move from place to place without
* control.
*/
int
getstring (WINDOW *win, char *str, int l, int x, int y)
{
int ch, newpos, len = 0;
char *orig;
orig = str;
custom_apply_attr (win, ATTR_HIGHEST);
for (; *str; ++str, ++len)
;
newpos = x + len;
showstring (win, y, x, orig, len, newpos);
while ((ch = wgetch (win)) != '\n')
{
switch (ch)
{
case KEY_BACKSPACE: /* delete one character */
case 330:
case 127:
case CTRL ('H'):
if (len > 0 && newpos > x)
{
--newpos;
--len;
if (newpos >= x + len)
--str;
else /* to be deleted inside string */
del_char (newpos, orig);
}
break;
case CTRL ('D'): /* delete next character */
if (newpos != (x + len))
{
--len;
if (newpos >= x + len)
--str;
else
del_char (newpos, orig);
}
else
printf ("\a");
break;
case CTRL ('K'): /* delete to end-of-line */
str = orig + newpos;
*str = 0;
len -= (len - newpos);
break;
case CTRL ('A'): /* go to begginning of string */
newpos = x;
break;
case CTRL ('E'): /* go to end of string */
newpos = x + len;
break;
case KEY_LEFT: /* move one char backward */
case CTRL ('B'):
if (newpos > x)
newpos--;
break;
case KEY_RIGHT: /* move one char forward */
case CTRL ('F'):
if (newpos < len)
newpos++;
break;
case ESCAPE: /* cancel editing */
return (GETSTRING_ESC);
break;
default: /* insert one character */
if (len < l - 1)
{
if (newpos >= len)
{
str = orig + newpos;
*str++ = ch;
}
else // char is to be inserted inside string
str = add_char (newpos, ch, orig);
++len;
++newpos;
}
}
showstring (win, y, x, orig, len, newpos);
doupdate ();
}
*str = 0;
custom_remove_attr (win, ATTR_HIGHEST);
return (len == 0 ? GETSTRING_RET : GETSTRING_VALID);
}
/* Update an already existing string. */
int
updatestring (WINDOW *win, char **str, int x, int y)
{
char *newstr;
int escape, len = strlen (*str) + 1;
EXIT_IF (len > BUFSIZ, _("Internal error: line too long"));
newstr = mem_malloc (BUFSIZ);
(void) memcpy (newstr, *str, len);
escape = getstring (win, newstr, BUFSIZ, x, y);
if (!escape)
{
len = strlen (newstr) + 1;
*str = mem_realloc (*str, len, 1);
EXIT_IF (*str == 0, _("out of memory"));
(void) memcpy (*str, newstr, len);
}
mem_free (newstr);
return escape;
}
/* checks if a string is only made of digits */
int
is_all_digit (char *string)
{
int digit, i;
int all_digit;
digit = 0;
all_digit = 0;
for (i = 0; i <= strlen (string); i++)
if (isdigit (string[i]) != 0)
digit++;
if (digit == strlen (string))
all_digit = 1;
return all_digit;
}
/* Given an item date expressed in seconds, return its start time in seconds. */
long
get_item_time (long date)
{
return (long)(get_item_hour (date) * HOURINSEC
+ get_item_min (date) * MININSEC);
}
int
get_item_hour (long date)
{
struct tm *lt;
time_t t;
t = (time_t)date;
lt = localtime (&t);
return lt->tm_hour;
}
int
get_item_min (long date)
{
struct tm *lt;
time_t t;
t = (time_t)date;
lt = localtime (&t);
return lt->tm_min;
}
long
date2sec (date_t day, unsigned hour, unsigned min)
{
struct tm start, *lt;
time_t tstart, t;
t = time (NULL);
lt = localtime (&t);
start = *lt;
start.tm_mon = day.mm;
start.tm_mday = day.dd;
start.tm_year = day.yyyy;
start.tm_hour = hour;
start.tm_min = min;
start.tm_sec = 0;
start.tm_isdst = -1;
start.tm_year -= 1900;
start.tm_mon--;
tstart = mktime (&start);
EXIT_IF (tstart == -1, _("failure in mktime"));
return tstart;
}
/* Return a string containing the hour of a given date in seconds. */
char *
date_sec2hour_str (long sec)
{
const int TIME_LEN = 6;
struct tm *lt;
time_t t;
char *timestr;
t = sec;
lt = localtime (&t);
timestr = (char *) mem_malloc (TIME_LEN);
(void)snprintf (timestr, TIME_LEN, "%02u:%02u", lt->tm_hour, lt->tm_min);
return timestr;
}
/* Return a string containing the date, given a date in seconds. */
char *
date_sec2date_str (long sec, char *datefmt)
{
struct tm *lt;
time_t t;
char *datestr;
datestr = (char *) mem_calloc (BUFSIZ, sizeof (char));
if (sec == 0)
(void)snprintf (datestr, BUFSIZ, "0");
else
{
t = sec;
lt = localtime (&t);
strftime (datestr, BUFSIZ, datefmt, lt);
}
return (datestr);
}
/* Generic function to format date. */
void
date_sec2date_fmt (long sec, const char *fmt, char *datef)
{
struct tm *lt;
time_t t;
t = sec;
lt = localtime (&t);
strftime (datef, BUFSIZ, fmt, lt);
}
/*
* Used to change date by adding a certain amount of days or weeks.
*/
long
date_sec_change (long date, int delta_month, int delta_day)
{
struct tm *lt;
time_t t;
t = date;
lt = localtime (&t);
lt->tm_mon += delta_month;
lt->tm_mday += delta_day;
lt->tm_isdst = -1;
t = mktime (lt);
EXIT_IF (t == -1, _("failure in mktime"));
return t;
}
/*
* Return a long containing the date which is updated taking into account
* the new time and date entered by the user.
*/
long
update_time_in_date (long date, unsigned hr, unsigned mn)
{
struct tm *lt;
time_t t, new_date;
t = date;
lt = localtime (&t);
lt->tm_hour = hr;
lt->tm_min = mn;
new_date = mktime (lt);
EXIT_IF (new_date == -1, _("error in mktime"));
return (new_date);
}
/*
* Returns the date in seconds from year 1900.
* If no date is entered, current date is chosen.
*/
long
get_sec_date (date_t date)
{
struct tm *ptrtime;
time_t timer;
long long_date;
char current_day[] = "dd ";
char current_month[] = "mm ";
char current_year[] = "yyyy ";
if (date.yyyy == 0 && date.mm == 0 && date.dd == 0)
{
timer = time (NULL);
ptrtime = localtime (&timer);
strftime (current_day, strlen (current_day), "%d", ptrtime);
strftime (current_month, strlen (current_month), "%m", ptrtime);
strftime (current_year, strlen (current_year), "%Y", ptrtime);
date.mm = atoi (current_month);
date.dd = atoi (current_day);
date.yyyy = atoi (current_year);
}
long_date = date2sec (date, 0, 0);
return (long_date);
}
long
min2sec (unsigned minutes)
{
return (minutes * MININSEC);
}
/*
* Checks if a time has a good format.
* The format could be either HH:MM or H:MM or MM, and we should have:
* 0 <= HH <= 24 and 0 <= MM < 999.
* This function returns 1 if the entered time is correct and in
* [h:mm] or [hh:mm] format, and 2 if the entered time is correct and entered
* in [mm] format.
*/
int
check_time (char *string)
{
int ok = 0;
char hour[] = " ";
char minutes[] = " ";
if (((strlen (string) == 2) || (strlen (string) == 3))
&& (isdigit (string[0]) != 0) && (isdigit (string[1]) != 0))
{
(void)strncpy (minutes, string, 2);
if (atoi (minutes) >= 0)
ok = 2; /* [MM] format */
}
else if ((strlen (string) == 4) && (isdigit (string[0]) != 0)
&& (isdigit (string[2]) != 0) && (isdigit (string[3]) != 0)
&& (string[1] == ':'))
{
(void)strncpy (hour, string, 1);
strncpy (minutes, string + 2, 2);
if ((atoi (hour) <= 24) && (atoi (hour) >= 0)
&& (atoi (minutes) < MININSEC) && (atoi (minutes) >= 0))
ok = 1; /* [H:MM] format */
}
else if ((strlen (string) == 5) && (isdigit (string[0]) != 0)
&& (isdigit (string[1]) != 0) && (isdigit (string[3]) != 0)
&& (isdigit (string[4]) != 0) && (string[2] == ':'))
{
strncpy (hour, string, 2);
strncpy (minutes, string + 3, 2);
if ((atoi (hour) <= 24) && (atoi (hour) >= 0)
&& (atoi (minutes) < MININSEC) && (atoi (minutes) >= 0))
ok = 1; /* [HH:MM] format */
}
return (ok);
}
/*
* Display a scroll bar when there are so many items that they
* can not be displayed inside the corresponding panel.
*/
void
draw_scrollbar (WINDOW *win, int y, int x, int length,
int bar_top, int bar_bottom, unsigned hilt)
{
mvwvline (win, bar_top, x, ACS_VLINE, bar_bottom - bar_top);
if (hilt)
custom_apply_attr (win, ATTR_HIGHEST);
wattron (win, A_REVERSE);
mvwvline (win, y, x, ' ', length);
wattroff (win, A_REVERSE);
if (hilt)
custom_remove_attr (win, ATTR_HIGHEST);
}
/*
* Print an item (either an appointment, event, or todo) in a
* popup window. This is useful if an item description is too
* long to fit in its corresponding panel window.
*/
void
item_in_popup (char *saved_a_start, char *saved_a_end, char *msg,
char *pop_title)
{
WINDOW *popup_win, *pad;
const int margin_left = 4, margin_top = 4;
const int winl = row - 5, winw = col - margin_left;
const int padl = winl - 2, padw = winw - margin_left;
pad = newpad (padl, padw);
popup_win = popup (winl, winw, 1, 2, pop_title, (char *)0, 1);
if (strncmp (pop_title, _("Appointment"), 11) == 0)
{
mvwprintw (popup_win, margin_top, margin_left, "- %s -> %s",
saved_a_start, saved_a_end);
}
mvwprintw (pad, 0, margin_left, "%s", msg);
wmove (win[STA].p, 0, 0);
pnoutrefresh (pad, 0, 0, margin_top + 2, margin_left, padl, winw);
doupdate ();
(void)wgetch (popup_win);
delwin (pad);
delwin (popup_win);
}
/* Returns the beginning of current day in seconds from 1900. */
long
get_today (void)
{
struct tm *lt;
time_t current_time;
long current_day;
date_t day;
current_time = time (NULL);
lt = localtime (&current_time);
day.mm = lt->tm_mon + 1;
day.dd = lt->tm_mday;
day.yyyy = lt->tm_year + 1900;
current_day = date2sec (day, 0, 0);
return (current_day);
}
/* Returns the current time in seconds. */
long
now (void)
{
time_t current_time;
current_time = time (NULL);
return (current_time);
}
char *
nowstr (void)
{
static char buf[BUFSIZ];
time_t now;
(void)time (&now);
(void)strftime (buf, sizeof buf, "%a %b %d %T %Y", localtime (&now));
return buf;
}
long
mystrtol (const char *str)
{
char *ep;
long lval;
errno = 0;
lval = strtol (str, &ep, 10);
if (str[0] == '\0' || *ep != '\0')
EXIT (_("could not convert string"));
if (errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN))
EXIT (_("out of range"));
return (lval);
}
/* Print the given option value with appropriate color. */
void
print_bool_option_incolor (WINDOW *win, unsigned option, int pos_y, int pos_x)
{
int color = 0;
char option_value[BUFSIZ] = "";
if (option == 1)
{
color = ATTR_TRUE;
strncpy (option_value, _("yes"), BUFSIZ);
}
else if (option == 0)
{
color = ATTR_FALSE;
strncpy (option_value, _("no"), BUFSIZ);
}
else
EXIT (_("option not defined"));
custom_apply_attr (win, color);
mvwprintw (win, pos_y, pos_x, "%s", option_value);
custom_remove_attr (win, color);
wnoutrefresh (win);
doupdate ();
}
/*
* Create a new unique file, and return a newly allocated string which contains
* the random part of the file name.
*/
char *
new_tempfile (const char *prefix, int trailing_len)
{
char fullname[BUFSIZ];
int prefix_len, fd;
FILE *file;
if (prefix == NULL)
return (NULL);
prefix_len = strlen (prefix);
if (prefix_len + trailing_len >= BUFSIZ)
return (NULL);
memcpy (fullname, prefix, prefix_len);
(void)memset (fullname + prefix_len, 'X', trailing_len);
fullname[prefix_len + trailing_len] = '\0';
if ((fd = mkstemp (fullname)) == -1 || (file = fdopen (fd, "w+")) == NULL)
{
if (fd != -1)
{
unlink (fullname);
close (fd);
}
ERROR_MSG (_("temporary file \"%s\" could not be created"), fullname);
return (char *)0;
}
fclose (file);
return mem_strdup (fullname + prefix_len);
}
/* Erase a note previously attached to a todo, event or appointment. */
void
erase_note (char **note, erase_flag_e flag)
{
char fullname[BUFSIZ];
if (*note == NULL)
return;
if (flag != ERASE_FORCE_KEEP_NOTE)
{
(void)snprintf (fullname, BUFSIZ, "%s%s", path_notes, *note);
if (unlink (fullname) != 0)
EXIT (_("could not remove note"));
}
mem_free (*note);
*note = NULL;
}
/*
* Convert a string containing a date into three integers containing the year,
* month and day.
* Returns 1 if sucessfully converted or 0 if the string is an invalid date.
*/
int
parse_date (char *date_string, int datefmt, int *year, int *month, int *day)
{
int in1, in2, in3;
int lyear, lmonth, lday;
if (date_string == 0)
return 0;
if (datefmt == DATEFMT_ISO)
{
if (sscanf (date_string, "%d - %d - %d", &in1, &in2, &in3) < 3)
return 0;
}
else
{
if (sscanf (date_string, "%d / %d / %d", &in1, &in2, &in3) < 3)
return 0;
}
switch (datefmt)
{
case DATEFMT_MMDDYYYY:
lmonth = in1;
lday = in2;
lyear = in3;
break;
case DATEFMT_DDMMYYYY:
lday = in1;
lmonth = in2;
lyear = in3;
break;
case DATEFMT_YYYYMMDD:
case DATEFMT_ISO:
lyear = in1;
lmonth = in2;
lday = in3;
break;
default:
return 0;
}
if (lyear < 1 || lyear > 9999
|| lmonth < 1 || lmonth > 12
|| lday < 1 || lday > 31)
return 0;
if (year != NULL)
*year = lyear;
if (month != NULL)
*month = lmonth;
if (day != NULL)
*day = lday;
return 1;
}
char *
str_toupper (char *s)
{
int len;
for (len = 0; s && s[len]; len++)
s[len] = toupper (s[len]);
return s;
}
void
file_close (FILE *f, const char *pos)
{
int ret;
ret = fclose (f);
EXIT_IF (ret != 0, _("Error when closing file at %s"), pos);
}
/*
* Sleep the given number of seconds, but make it more 'precise' than sleep(3)
* (hence the 'p') in a way that even if a signal is caught during the sleep
* process, this function will return to sleep afterwards.
*/
void
psleep (unsigned secs)
{
unsigned unslept;
for (unslept = sleep (secs); unslept; unslept = sleep (unslept))
;
}
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