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eximp.cpp
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eximp.cpp
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/*
* Copyright 2015 by Philip N. Garner
*
* See the file COPYING for the licence associated with this software.
*
* Author(s):
* Phil Garner, September 2015
*/
#include <lube.h>
#include <lube/path.h>
#include <lube/config.h>
#include <boost/filesystem/operations.hpp>
#include <wordexp.h>
#include "exif.h"
#include "png.h"
#ifdef HAVE_HEIF
# include "heif.h"
#endif
#ifdef HAVE_AVFORMAT
# include "avformat.h"
#endif
// #include "isobm.h"
// #include "mp4v2.h"
using namespace lube;
namespace fs = boost::filesystem;
bool verbose = false;
/**
* Convert an array (of strings) to an ISO 8601 string, i.e.,
* extended: 2016-04-17T09:09:48Z
* basic: 20160417T090948Z
*
* The colons cause trouble on a FAT filesystem, in which case the answer
* is to use the "basic format" - the same string without hyphens or colons;
* that's still an ISO standard date.
*/
var arrayToISODate(var iArray, bool iBasic=false)
{
// How long is it?
int s = iArray.size();
if (s > 6)
s = 6;
// Format to a stream
const char* dsep = iBasic ? "" : "-";
const char* tsep = iBasic ? "" : ":";
varstream iso;
switch (s)
{
case 6:
// The most likely; three date and three time fields
iso << iArray[0].str() << dsep
<< iArray[1].str() << dsep
<< iArray[2].str();
iso << "T";
iso << iArray[3].str() << tsep
<< iArray[4].str() << tsep
<< iArray[5].str();
iso << "Z";
break;
//default:
// throw lube::error("Not a valid date size");
}
// Pull the var out of the stream
return var(iso);
}
/**
* Pull an array of strings out of a single string representing a date.
*/
var dateMatch(var iStr)
{
// Dropbox files are 2012-12-02 04.08.18
// ISO format is 2012-12-02T04:08:18Z
// or 20121202T040818Z
//
// Use search rather than match to skip leading crap. There must be a
// better syntax than this; \\\\. is to escape both the compiler and the RE
// parser. Literal '-' must be last in a [] expression.
var array = iStr.search(
"(\\d\\d\\d\\d)[:-]?(\\d\\d)[:-]?(\\d\\d)"
"[T_ -]?(\\d\\d)[:\\\\.-]?(\\d\\d)[:\\\\.-]?(\\d\\d)Z?"
);
// There should be 6 matches in an array of length 7
if (array.size() != 7)
return nil;
array.shift();
return array;
}
/*
* Format the exif make model information
*/
var catMakeModel(var iMake, var iModel)
{
// Try for make and model
// ...this seems way too long
varstream mm;
if (iMake)
mm << iMake.str();
if (iModel)
{
// Models don't need makes
iModel.replace("Canon ", "");
iModel.replace("HTC ", "");
iModel.replace("HTC_", "");
iModel.replace("BlackBerry ", "");
iModel.replace("NIKON ", "");
iModel.replace("KODAK ", "");
if (iMake)
mm << " ";
mm << iModel.str();
}
if (!iMake && !iModel)
mm << "Unknown";
var m = var(mm).replace(" ", "-");
return m;
}
/**
* Get the date, make and model from an EXIF record
*/
var exifData(var iPath)
{
// Is it even a photo?
// If there is no EXIF there's no point trying to continue
EXIF exif(iPath);
if (!exif.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
exif.dump();
}
// It's a photo, can we infer the date from exif data?
var da = exif.date();
if (!da)
{
std::cout << " [no EXIF date]";
return nil;
}
// Make & model
var m = exif.entry(EXIF_TAG_MAKE);
var n = exif.entry(EXIF_TAG_MODEL);
m = catMakeModel(m, n);
// The metadata is date array plus make-model string
var meta;
meta[0] = da;
meta[1] = m;
return meta;
}
/**
* Get the date from a PNG file
*/
var pngData(var iPath)
{
// Is it a PNG file?
PNG png(iPath);
if (!png.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
png.dump();
}
// It's a picture, can we infer the date?
var da = png.date();
if (!da)
{
std::cout << " [no PNG date]";
return nil;
}
var meta;
meta[0] = da;
meta[1] = "Unknown";
return meta;
}
#ifdef HAVE_HEIF
/**
* Read a HEIF file
*/
var heifData(var iPath)
{
HEIF heif(iPath);
if (!heif.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
heif.dump();
}
// It's a picture, can we infer the date?
var da = heif.date();
if (!da)
{
std::cout << " [no HEIF date]";
return nil;
}
// Make & model
var m = heif.entry(EXIF_TAG_MAKE);
var n = heif.entry(EXIF_TAG_MODEL);
m = catMakeModel(m, n);
var meta;
meta[0] = da;
meta[1] = m;
return meta;
}
#endif
#ifdef HAVE_AVFORMAT
/**
* Get the date and encoder from an AVFormat record
*/
var avData(var iPath)
{
AVFormat av(iPath);
if (!av.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
av.dump();
}
// Date is in the AV file
var date = av.date();
if (!date)
{
std::cout << " [no AV date]";
return nil;
}
var da = dateMatch(date);
// Recently, on iPhone at least, make & model exist
var mm;
mm[0] = av.tag("make");
mm[1] = av.tag("model");
if (mm[0])
mm = mm.join("-");
else
// Fall back to 'encoder'
mm = av.tag("encoder");
if (!mm)
mm = "Unknown";
// Date array plus make-model
var meta;
meta[0] = da;
meta[1] = var(mm).replace(" ", "-");
return meta;
}
#endif
#if 0
/**
* Get the date from an ISO file
*/
var isoData(var iPath)
{
ISOBM isobm(iPath);
if (!isobm.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
isobm.dump();
}
// Meta
var da = isobm.date();
if (!da)
{
std::cout << " [no ISO date]";
return nil;
}
var meta;
meta[0] = da;
meta[1] = "Unknown";
return meta;
}
/**
* Get the date from an MP4 file
*/
var mp4Data(var iPath)
{
MP4 mp4(iPath);
if (!mp4.valid())
return nil;
if (verbose)
{
std::cout << std::endl;
mp4.dump();
}
// Meta
var meta = 0;
return meta;
}
#endif
/**
* Look up information to convert a path of a photo to a path in an archive.
*
* Returns an array with three components: path, stem and extension.
*/
var target(var iPrefix, var iPath, var iBit)
{
// First try for EXIF data
var meta = exifData(iPath);
if (!meta)
// Try PNG data
meta = pngData(iPath);
#ifdef HAVE_HEIF
if (!meta)
// Try HEIF data
meta = heifData(iPath);
#endif
#ifdef HAVE_AVFORMAT
if (!meta)
// Try AVFormat data
meta = avData(iPath);
#endif
#if 0
if (!meta)
// Try ISO data
meta = isoData(iPath);
if (!meta)
// Try MP4 data
meta = mp4Data(iPath);
#endif
if (verbose)
std::cout << "Meta: " << meta << std::endl;
if (!meta)
{
// Fall back on the file name
meta[1] = "Unknown";
meta[0] = dateMatch(iBit[1]);
if (!meta[0])
return nil;
}
var year = meta[0][0].copy();
var month = meta[0][1].copy();
// Check for a label after the month
var label = iPath.search("\\/\\d\\d(-[^\\/]+)\\/");
if (label)
month.append(label[1]);
// Result
var path;
path.push(iPrefix);
path.push(year);
path.push(month);
path.push(meta[1]);
var ret;
ret[2] = iBit[2].tolower().str();
ret[1] = arrayToISODate(meta[0], true);
ret[0] = path.join("/");
return ret;
}
int main(int argc, char** argv)
{
// Use wordexp to expand the tilde in the prefix. wordexp is cool; it
// should be in lube!
var prefix = "~/Pictures/Import";
wordexp_t we;
wordexp(prefix.str(), &we, 0);
var wev(we.we_wordc, we.we_wordv);
prefix = wev[0];
wordfree(&we);
// Command line
Option o("EXIMP: metadata based media importer");
o(" <args> is a list of directories (at least one) that are recursed");
o('t', "Import target directory", prefix);
o('r', "Rename files; only works on the same filesystem");
o('c', "Copy files; works across filesystems");
o('m', "Move files; works across filesystems using copy then remove");
o('v', "Be verbose; dump EXIF records and the like");
o('n', "Append version numbers to files (deals with duplicates)");
o('d', "Write out duplicates in the form of a diff command");
o("Nothing is actually done unless -r, -c or -m are specified");
o.parse(argc, argv);
var dir = o.args();
verbose = o['v'].defined();
// Check for nonsense options
int n = 0;
if (o['r']) n++;
if (o['c']) n++;
if (o['m']) n++;
if (n > 1)
o.usage(1);
// Check we have a path
if (dir.size() < 1)
o.usage(1);
// Recurse the paths to find files
pathmodule mod;
for (int d=0; d<dir.size(); d++)
{
path& p = mod.create(dir[d]);
var rdir = p.rdir(true);
for (int i=0; i<rdir.size(); i++)
{
var s = rdir.key(i);
// Check it's actually a file, not a directory
if (fs::is_directory(s.str()))
continue;
std::cout << s.str();
// Convert to target path
var base = target(o['t'], s, rdir[i]);
if (!base)
{
std::cout << " [no usable metadata]" << std::endl;
continue;
}
// Create path as base and extension
if (o['r'] || o['c'] || o['m'])
fs::create_directories(base[0].str());
var ext = base.pop();
base = base.join("/");
// Check if the unversioned or zero-versioned file exists and keep
// the path
var path = base.copy();
path.append("-0");
path.append(ext);
bool exists = fs::exists(path.str());
if (!exists)
{
path = base.copy();
path.append(ext);
exists = fs::exists(path.str());
}
// Check for overwrite; eximp should never overwrite
if (!o['n'] && exists)
{
if (o['d'])
std::cout
<< " [exists]\n"
<< "diff " << s << " " << path
<< std::endl;
else
std::cout
<< " [target " << path.str() << " exists]"
<< std::endl;
continue;
}
// Build a versioned path
if (o['n'])
{
int version = exists ? 1 : 0;
do
{
if (version > 99)
{
std::cout
<< " Probable error: version number > 99"
<< std::endl;
exit(1);
}
path = base.copy();
varstream v;
v << "-" << version++;
path.append(v);
path.append(ext);
}
while (fs::exists(path.str()));
}
// Result
std::cout << " -> " << path.str() << std::endl;
if (o['r'])
fs::rename(s.str(), path.str());
else if (o['c'])
fs::copy(s.str(), path.str());
else if (o['m'])
{
boost::system::error_code ec;
fs::copy(s.str(), path.str(), ec);
if (ec.value() == 0)
fs::remove(s.str());
else
std::cout << "Error: " << ec.message() << std::endl;
}
}
}
return 0;
}