From 16e8431a25e2fe2c83a7f2cf925eb4841ef7da69 Mon Sep 17 00:00:00 2001
From: Philip Kovacs <pkovacs@users.sourceforge.net>
Date: Sat, 15 Jul 2006 02:18:06 +0000
Subject: [PATCH] tztime patch

git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@677 7f574dfc-610e-0410-a909-a81674777703
---
 AUTHORS           |  3 +++
 ChangeLog         |  4 ++++
 doc/conky.1       |  4 ++++
 doc/variables.xml | 20 ++++++++++++++++++++
 src/conky.c       | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 78 insertions(+)

diff --git a/AUTHORS b/AUTHORS
index 8fb7486e..807c2a0b 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -34,6 +34,9 @@ dan-h <dan-h at users dot sourceforge dot net>
 David McCabe
   utime
 
+Ram Yalamanchili
+  tztime
+
 Daniel Thiele <dthiele at gmx dot net>
   APM support for FreeBSD
 
diff --git a/ChangeLog b/ChangeLog
index c4022648..91cd6112 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 # $Id$
 
+2006-07-13
+	* Added tztime patch to show time in arbitrary time zones (thanks Ram
+	Yalamanchili)
+
 2006-06-07
 	* Small battery fix (thanks Nexox, sf.net patch 1500014)
 	* Fixed order of variables/objects in docs (thanks Peter Tarjan)
diff --git a/doc/conky.1 b/doc/conky.1
index 03a6681f..cdd1b1e1 100644
--- a/doc/conky.1
+++ b/doc/conky.1
@@ -889,6 +889,10 @@ Displays last N lines of supplied text text file. If interval is not supplied, C
 \fBtime\fR \fB(format)\fR 
 Local time, see man strftime to get more information about format
 
+.TP 
+\fBtztime\fR \fB(timezone) (format)\fR 
+Local time for specified timezone, see man strftime to get more information about format. The timezone argument is specified in similar fashion as TZ environment variable. For hints, look in /usr/share/zoneinfo. e.g. US/Pacific, Europe/Zurich, etc.
+
 .TP 
 \fBtotaldown\fR \fBnet\fR 
 Total download, overflows at 4 GB on Linux with 32-bit arch and there doesn't seem to be a way to know how many times it has already done that before conky has started.
diff --git a/doc/variables.xml b/doc/variables.xml
index d7a1a9b3..ba48751e 100644
--- a/doc/variables.xml
+++ b/doc/variables.xml
@@ -1194,6 +1194,26 @@
 	<para></para></listitem>
 </varlistentry>
 
+<varlistentry>
+	<term>
+		<command><option>utime</option></command>
+	<option>(format)</option>
+	</term>
+	<listitem>
+		Display time in UTC (universal coordinate time).
+	<para></para></listitem>
+</varlistentry>
+
+<varlistentry>
+	<term>
+		<command><option>tztime</option></command>
+	<option>(timezone) (format)</option>
+	</term>
+	<listitem>
+		Local time for specified timezone, see man strftime to get more information about format. The timezone argument is  specified in similar fashion as TZ environment variable. For hints, look in /usr/share/zoneinfo. e.g. US/Pacific, Europe/Zurich, etc.
+	<para></para></listitem>
+</varlistentry>
+
 <varlistentry>
 	<term>
 		<command><option>totaldown</option></command>
diff --git a/src/conky.c b/src/conky.c
index d25087e9..b6a5b3bf 100644
--- a/src/conky.c
+++ b/src/conky.c
@@ -934,6 +934,7 @@ enum text_object_type {
 	OBJ_text,
 	OBJ_time,
 	OBJ_utime,
+	OBJ_tztime,
 	OBJ_totaldown,
 	OBJ_totalup,
 	OBJ_updates,
@@ -1050,6 +1051,12 @@ struct text_object {
 		unsigned char loadavg[3];
 		unsigned int cpu_index;
 		struct mail_s *mail;
+
+		struct {
+			char *tz;    /* timezone variable */
+			char *fmt;   /* time display formatting */
+		} tztime;
+
 		struct {
 			struct fs_stat *fs;
 			int w, h;
@@ -1707,6 +1714,12 @@ static void free_text_objects(unsigned int count, struct text_object *objs)
 				free(objs[i].data.s);
 				break;
 			case OBJ_utime:
+				free(objs[i].data.s);
+				break;
+			case OBJ_tztime:
+				free(objs[i].data.tztime.tz);
+				free(objs[i].data.tztime.fmt);
+				break;
 			case OBJ_imap:
 				free(info.mail);
 				break;
@@ -2651,6 +2664,21 @@ static struct text_object *construct_text_object(const char *s, const char *arg,
 				obj->data.i2c.devtype);
 	END OBJ(time, 0) obj->data.s = strdup(arg ? arg : "%F %T");
 	END OBJ(utime, 0) obj->data.s = strdup(arg ? arg : "%F %T");
+	END OBJ(tztime, 0)
+		char buf1[256], buf2[256], *fmt, *tz;
+		fmt = tz = NULL;
+		if (arg) {
+			int nArgs = sscanf(arg, "%255s %255[^\n]", buf1, buf2);
+			switch (nArgs) {
+				case 2:
+					tz = buf1;
+				case 1:
+					fmt = buf2;
+			}
+		}
+
+		obj->data.tztime.fmt = strdup(fmt ? fmt : "%F %T");
+		obj->data.tztime.tz = tz ? strdup(tz) : NULL;
 #ifdef HAVE_ICONV
 	END OBJ(iconv_start, 0)
 		if (iconv_converting) {
@@ -4102,6 +4130,25 @@ static void generate_text_internal(char *p, int p_max_size, struct text_object *
 				struct tm *tm = gmtime(&t);
 				strftime(p, p_max_size, obj->data.s, tm);
 			}
+			OBJ(tztime) {
+				char* oldTZ = NULL;
+				if (obj->data.tztime.tz) {
+					oldTZ = getenv("TZ");
+					setenv("TZ", obj->data.tztime.tz, 1);
+					tzset();
+				}
+				time_t t = time(NULL);
+				struct tm *tm = localtime(&t);
+				setlocale(LC_TIME, "");
+				strftime(p, p_max_size, obj->data.tztime.fmt, tm);
+				if (oldTZ) {
+					setenv("TZ", oldTZ, 1);
+					tzset();
+				} else {
+					unsetenv("TZ");
+				}
+				// Needless to free oldTZ since getenv gives ptr to static data 
+			}
 			OBJ(totaldown) {
 				human_readable(obj->data.net->recv, p,
 					       255);