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Add hashes to images

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Upon successfull reading an image file, this computes a SHA1 hash of the
image and saves it with the picture tag in the log file. When a file is
not successfully loaded (for example because the log was created on a
different computer) we look up the hash in a dictionary that maps hashes
to local file names.

That dictionary (actually two for both directions), is loaded on startup
and saved upon destruction of the main window.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Robert C. Helling 2015-02-26 14:39:42 +01:00 • committed by Dirk Hohndel
parent ea00fdb36a
commit b02bf002a6
11 changed files with 139 additions and 15 deletions
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5
save-xml.c
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@ -359,6 +359,8 @@ static void save_dc(struct membuffer *b, struct dive *dive, struct divecomputer
put_format(b, " </divecomputer>\n");
}
extern char * hashstring(char * filename);
static void save_picture(struct membuffer *b, struct picture *pic)
{
put_string(b, " <picture filename='");
@ -377,6 +379,9 @@ static void save_picture(struct membuffer *b, struct picture *pic)
put_degrees(b, pic->latitude, " gps='", " ");
put_degrees(b, pic->longitude, "", "'");
}
if (hashstring(pic->filename))
put_format(b, " hash='%s'", hashstring(pic->filename));
put_string(b, "/>\n");
}