notmuch: Break notmuch.c up into several smaller files.

Now that the client sources are alone here in their own directory,
(with all the library sources down inside the lib directory), we can
break the client up into multiple files without mixing the files up.
The hope is that these smaller files will be easier to manage and
maintain.

1 files changed, 137 insertions, 0 deletions

diff --git a/notmuch-time.c b/notmuch-time.c
new file mode 100644
index 00000000..de56db9e
--- /dev/null
+++ b/notmuch-time.c
@@ -0,0 +1,137 @@
+/* notmuch - Not much of an email program, (just index and search)
+ *
+ * Copyright © 2009 Carl Worth
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see http://www.gnu.org/licenses/ .
+ *
+ * Author: Carl Worth <cworth@cworth.org>
+ */
+
+#include "notmuch-client.h"
+
+/* Format a nice representation of 'time' relative to the current time.
+ *
+ * Examples include:
+ *
+ *	5 mins. ago	(For times less than 60 minutes ago)
+ *	Today 12:30	(For times >60 minutes but still today)
+ *	Yest. 12:30
+ *	Mon.  12:30	(Before yesterday but fewer than 7 days ago)
+ *	October 12	(Between 7 and 180 days ago (about 6 months))
+ *	2008-06-30	(More than 180 days ago)
+ *
+ * The returned string is either static data (a string literal) or
+ * newly talloced data belonging to 'ctx'. That is, the caller should
+ * not modify nor free the returned value. But when the caller
+ * arranges for 'ctx' to be talloc_freed, then memory allocated here
+ * (if any) will be reclaimed.
+ *
+ */
+#define MINUTE (60)
+#define HOUR (60 * MINUTE)
+#define DAY (24 * HOUR)
+#define RELATIVE_DATE_MAX 20
+const char *
+notmuch_time_relative_date (void *ctx, time_t then)
+{
+    struct tm tm_now, tm_then;
+    time_t now = time(NULL);
+    time_t delta;
+    char *result;
+
+    localtime_r (&now, &tm_now);
+    localtime_r (&then, &tm_then);
+
+    result = talloc_zero_size (ctx, RELATIVE_DATE_MAX);
+    if (result == NULL)
+	return "when?";
+
+    if (then > now)
+	return "the future";
+
+    delta = now - then;
+
+    if (delta > 180 * DAY) {
+	strftime (result, RELATIVE_DATE_MAX,
+		  "%F", &tm_then); /* 2008-06-30 */
+	return result;
+    }
+
+    if (delta < 3600) {
+	snprintf (result, RELATIVE_DATE_MAX,
+		  "%d mins. ago", (int) (delta / 60));
+	return result;
+    }
+
+    if (delta <= 7 * DAY) {
+	if (tm_then.tm_wday == tm_now.tm_wday &&
+	    delta < DAY)
+	{
+	    strftime (result, RELATIVE_DATE_MAX,
+		      "Today %R", &tm_then); /* Today 12:30 */
+	    return result;
+	} else if ((tm_now.tm_wday + 7 - tm_then.tm_wday) % 7 == 1) {
+	    strftime (result, RELATIVE_DATE_MAX,
+		      "Yest. %R", &tm_then); /* Yest. 12:30 */
+	    return result;
+	} else {
+	    if (tm_then.tm_wday != tm_now.tm_wday) {
+		strftime (result, RELATIVE_DATE_MAX,
+			  "%a. %R", &tm_then); /* Mon. 12:30 */
+		return result;
+	    }
+	}
+    }
+
+    strftime (result, RELATIVE_DATE_MAX,
+	      "%B %d", &tm_then); /* October 12 */
+    return result;
+}
+#undef MINUTE
+#undef HOUR
+#undef DAY
+
+void
+notmuch_time_print_formatted_seconds (double seconds)
+{
+    int hours;
+    int minutes;
+
+    if (seconds < 1) {
+	printf ("almost no time");
+	return;
+    }
+
+    if (seconds > 3600) {
+	hours = (int) seconds / 3600;
+	printf ("%dh ", hours);
+	seconds -= hours * 3600;
+    }
+
+    if (seconds > 60) {
+	minutes = (int) seconds / 60;
+	printf ("%dm ", minutes);
+	seconds -= minutes * 60;
+    }
+
+    printf ("%ds", (int) seconds);
+}
+
+/* Compute the number of seconds elapsed from start to end. */
+double
+notmuch_time_elapsed (struct timeval start, struct timeval end)
+{
+    return ((end.tv_sec - start.tv_sec) +
+	    (end.tv_usec - start.tv_usec) / 1e6);
+}