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/*---------------------------------------------------------------------\
| ____ _ __ __ ___ |
| |__ / \ / / . \ . \ |
| / / \ V /| _/ _/ |
| / /__ | | | | | | |
| /_____||_| |_| |_| |
| |
\---------------------------------------------------------------------*/
#include "metadatahelper.h"
#include <zypp-core/base/IOTools.h>
#include <memory>
namespace zypp::media {
MetaDataType looks_like_meta_data(const std::vector<char> &data)
{
if ( data.empty() )
return MetaDataType::None;
const char *p = data.data();
while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
p++;
// If we have a zsync file, it has to start with zsync:
if ( !strncasecmp( p, "zsync:", 6 ) ) {
return MetaDataType::Zsync;
}
if (!strncasecmp(p, "<?xml", 5))
{
while (*p && *p != '>')
p++;
if (*p == '>')
p++;
while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')
p++;
}
bool ret = !strncasecmp( p, "<metalink", 9 ) ? true : false;
if ( ret )
return MetaDataType::MetaLink;
return MetaDataType::None;
}
MetaDataType looks_like_meta_file(const Pathname &file)
{
std::unique_ptr<FILE, int(*)(FILE *)> fd( fopen( file.c_str(), "r" ), &fclose );
return looks_like_meta_file( fd.get() );
}
MetaDataType looks_like_meta_file(FILE *file)
{
if ( !file )
return MetaDataType::None;
return looks_like_meta_data( io::peek_data_fd( file, 0, minMetalinkProbeSize ) );
}
}
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