Files
taglib/examples/matroskareader.cpp
Urs Fleisch d47d28f0f8 Fix and simplify Matroska simple tag
Avoid use of raw pointers, fix property interface.
2026-01-24 14:59:10 +01:00

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#include <cstdio>
#include "matroskafile.h"
#include "matroskatag.h"
#include "matroskasimpletag.h"
#include "matroskaattachments.h"
#include "matroskaattachedfile.h"
#include "tstring.h"
#include "tutils.h"
#include "tbytevector.h"
#define GREEN_TEXT(s) "" s ""
#define PRINT_PRETTY(label, value) printf(" " GREEN_TEXT(label) ": %s\n", value)
int main(int argc, char *argv[])
{
if(argc != 2) {
printf("Usage: matroskareader FILE\n");
return 1;
}
TagLib::Matroska::File file(argv[1]);
if(!file.isValid()) {
printf("File is not valid\n");
return 1;
}
auto tag = dynamic_cast<TagLib::Matroska::Tag*>(file.tag());
if(!tag) {
printf("File has no tag\n");
return 0;
}
const TagLib::Matroska::SimpleTagsList &list = tag->simpleTagsList();
printf("Found %u tag(s):\n", list.size());
for(const TagLib::Matroska::SimpleTag &t : list) {
PRINT_PRETTY("Tag Name", t.name().toCString(true));
if(t.type() == TagLib::Matroska::SimpleTag::StringType)
PRINT_PRETTY("Tag Value", t.toString().toCString(true));
else if(t.type() == TagLib::Matroska::SimpleTag::BinaryType)
PRINT_PRETTY("Tag Value",
TagLib::Utils::formatString("Binary with size %i", t.toByteVector().size()).toCString(false)
);
auto targetTypeValue = static_cast<unsigned int>(t.targetTypeValue());
PRINT_PRETTY("Target Type Value",
targetTypeValue == 0 ? "None" : TagLib::Utils::formatString("%i", targetTypeValue).toCString(false)
);
const TagLib::String &language = t.language();
PRINT_PRETTY("Language", !language.isEmpty() ? language.toCString(false) : "Not set");
printf("\n");
}
TagLib::Matroska::Attachments *attachments = file.attachments();
if(attachments) {
const TagLib::Matroska::Attachments::AttachedFileList &list = attachments->attachedFileList();
printf("Found %u attachment(s)\n", list.size());
for(const auto &attachedFile : list) {
PRINT_PRETTY("Filename", attachedFile.fileName().toCString(true));
const TagLib::String &description = attachedFile.description();
PRINT_PRETTY("Description", !description.isEmpty() ? description.toCString(true) : "None");
const TagLib::String &mediaType = attachedFile.mediaType();
PRINT_PRETTY("Media Type", !mediaType.isEmpty() ? mediaType.toCString(false) : "None");
PRINT_PRETTY("Data Size",
TagLib::Utils::formatString("%u byte(s)",attachedFile.data().size()).toCString(false)
);
PRINT_PRETTY("UID",
TagLib::Utils::formatString("%llu",attachedFile.uid()).toCString(false)
);
}
}
else
printf("File has no attachments\n");
return 0;
}