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126 lines
3.9 KiB
C
126 lines
3.9 KiB
C
/* GTK - The GIMP Toolkit
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* gtkprintbackendcups.h: Default implementation of GtkPrintBackend
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* for the Common Unix Print System (CUPS)
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* Copyright (C) 2006, 2007 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <glib.h>
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#include "gtkprintbackendutils.h"
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/* Converts local time to UTC time. Local time has to be in one of these
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* formats: HH:MM:SS, HH:MM, HH:MM:SS {am, pm}, HH:MM {am, pm}, HH {am, pm},
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* {am, pm} HH:MM:SS, {am, pm} HH:MM, {am, pm} HH.
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* Returns a newly allocated string holding UTC time in HH:MM:SS format
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* or NULL.
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*/
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char *
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localtime_to_utctime (const char *local_time)
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{
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const char *formats_0[] = {" %I : %M : %S %p ", " %p %I : %M : %S ",
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" %H : %M : %S ",
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" %I : %M %p ", " %p %I : %M ",
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" %H : %M ",
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" %I %p ", " %p %I "};
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const char *formats_1[] = {" %H : %M : %S ", " %H : %M "};
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const char *end = NULL;
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struct tm *actual_local_time;
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struct tm *actual_utc_time;
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struct tm local_print_time;
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struct tm utc_print_time;
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struct tm diff_time;
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char *utc_time = NULL;
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int i, n;
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if (local_time == NULL || local_time[0] == '\0')
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return NULL;
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n = supports_am_pm () ? G_N_ELEMENTS (formats_0) : G_N_ELEMENTS (formats_1);
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for (i = 0; i < n; i++)
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{
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local_print_time.tm_hour = 0;
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local_print_time.tm_min = 0;
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local_print_time.tm_sec = 0;
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if (supports_am_pm ())
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end = strptime (local_time, formats_0[i], &local_print_time);
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else
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end = strptime (local_time, formats_1[i], &local_print_time);
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if (end != NULL && end[0] == '\0')
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break;
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}
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if (end != NULL && end[0] == '\0')
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{
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time_t rawtime;
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time (&rawtime);
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actual_utc_time = g_memdup2 (gmtime (&rawtime), sizeof (struct tm));
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actual_local_time = g_memdup2 (localtime (&rawtime), sizeof (struct tm));
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diff_time.tm_hour = actual_utc_time->tm_hour - actual_local_time->tm_hour;
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diff_time.tm_min = actual_utc_time->tm_min - actual_local_time->tm_min;
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diff_time.tm_sec = actual_utc_time->tm_sec - actual_local_time->tm_sec;
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utc_print_time.tm_hour = ((local_print_time.tm_hour + diff_time.tm_hour) + 24) % 24;
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utc_print_time.tm_min = ((local_print_time.tm_min + diff_time.tm_min) + 60) % 60;
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utc_print_time.tm_sec = ((local_print_time.tm_sec + diff_time.tm_sec) + 60) % 60;
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utc_time = g_strdup_printf ("%02d:%02d:%02d",
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utc_print_time.tm_hour,
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utc_print_time.tm_min,
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utc_print_time.tm_sec);
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}
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return utc_time;
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}
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gboolean
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supports_am_pm (void)
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{
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struct tm tmp_tm = { 0 };
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char time[8];
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int length;
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length = strftime (time, sizeof (time), "%p", &tmp_tm);
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return length != 0;
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}
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/*
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* Generate a random string of "n" length
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*/
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char *
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random_string (int n)
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{
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const char charset[] = "abcdefghijklmnopqrstuvwxyz"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"0123456789";
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char *str = g_new0 (char, n + 1);
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for (int i = 0; i < n; i++)
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{
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int idx = g_random_int_range (0, strlen (charset));
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str[i] = charset[idx];
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}
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str[n] = '\0';
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return str;
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}
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