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<a href="#pub-types">Public Types</a> &#124;
<a href="#pub-methods">Public Member Functions</a> &#124;
<a href="#pub-static-methods">Static Public Member Functions</a> &#124;
<a href="#pub-static-attribs">Static Public Attributes</a> &#124;
<a href="../../d8/dcc/class_o_n___content_hash-members.html">List of all members</a> </div>
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<div class="title">ON_ContentHash Class Reference</div> </div>
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<p><code>#include &lt;<a class="el" href="../../d6/da3/opennurbs__file__utilities_8h_source.html">opennurbs_file_utilities.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a5a6e077d6893727a93e91d3f1c9e847d"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">CompareResult</a> : unsigned char { <br />
&#160;&#160;<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dac9f88e098f6fe4e4e112eeb05ccb9671">CompareResult::Unset</a> = 0,
<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9">CompareResult::EqualContent</a> = 1,
<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da9c6b349504605b60c2709bd46525764d">CompareResult::DifferentContent</a> = 2,
<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09">CompareResult::DifferentContentFileIsOlder</a> = 3,
<br />
&#160;&#160;<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da0a64794cb339dc5c7ef05da3c63c60df">CompareResult::ContentDifferentFileIsNewer</a> = 4,
<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847daab7e9f2fa8b2404bc25061dd572e9797">CompareResult::FileDoesNotExist</a> = 5,
<a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847daf6c4270bbdfbbf35aa42b5fd44edf750">CompareResult::FileSystemFailure</a> = 6
<br />
}<tr class="memdesc:a5a6e077d6893727a93e91d3f1c9e847d"><td class="mdescLeft">&#160;</td><td class="mdescRight"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29" title="Compare the information used to set this content hash with the contents of the file. ">ON_ContentHash::Compare</a> are the possible results of calling ON_ContentHash::CompareFile(). <a href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">More...</a><br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a4eda351919e955f7dfd8a3699750bb03"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a4eda351919e955f7dfd8a3699750bb03">ON_ContentHash</a> ()=default</td></tr>
<tr class="separator:a4eda351919e955f7dfd8a3699750bb03"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a36ceb39cd5b7969edc91cfc748c73791"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a36ceb39cd5b7969edc91cfc748c73791">ON_ContentHash</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;)=default</td></tr>
<tr class="separator:a36ceb39cd5b7969edc91cfc748c73791"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0cac60bf6da07ee8f72cba9d729e3b9f"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a0cac60bf6da07ee8f72cba9d729e3b9f">~ON_ContentHash</a> ()=default</td></tr>
<tr class="separator:a0cac60bf6da07ee8f72cba9d729e3b9f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3d5536333ff8bbebf6b341355cca1172"><td class="memItemLeft" align="right" valign="top">ON__UINT64&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount</a> () const</td></tr>
<tr class="separator:a3d5536333ff8bbebf6b341355cca1172"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af0a7f308fe41d1ffbc67f3ccc644ab29"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29">Compare</a> (const wchar_t *file_path, bool bFastTest) const</td></tr>
<tr class="memdesc:af0a7f308fe41d1ffbc67f3ccc644ab29"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compare the information used to set this content hash with the contents of the file. <a href="#af0a7f308fe41d1ffbc67f3ccc644ab29">More...</a><br /></td></tr>
<tr class="separator:af0a7f308fe41d1ffbc67f3ccc644ab29"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6fdda90f92f7cd5e935091cb4a403df0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a6fdda90f92f7cd5e935091cb4a403df0">Compare</a> (<a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> file_content_hash) const</td></tr>
<tr class="memdesc:a6fdda90f92f7cd5e935091cb4a403df0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compare the byte count and SHA-1 content hash. <a href="#a6fdda90f92f7cd5e935091cb4a403df0">More...</a><br /></td></tr>
<tr class="separator:a6fdda90f92f7cd5e935091cb4a403df0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad6dcfec1c56e53f3576a628997483003"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad6dcfec1c56e53f3576a628997483003">ContentHash</a> () const</td></tr>
<tr class="separator:ad6dcfec1c56e53f3576a628997483003"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a999cdca34407c6727c8a4ad7cc9196ca"><td class="memItemLeft" align="right" valign="top">ON__UINT64&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a999cdca34407c6727c8a4ad7cc9196ca">ContentLastModifiedTime</a> () const</td></tr>
<tr class="separator:a999cdca34407c6727c8a4ad7cc9196ca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6c9f4a8d99838ea4415042a0eab78dd2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a6c9f4a8d99838ea4415042a0eab78dd2">Dump</a> (class <a class="el" href="../../d2/da3/class_o_n___text_log.html">ON_TextLog</a> &amp;text_log) const</td></tr>
<tr class="separator:a6c9f4a8d99838ea4415042a0eab78dd2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae7564b2790c10576e51ede8bcd412287"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ae7564b2790c10576e51ede8bcd412287">EqualFileNameSizeAndTime</a> (const wchar_t *filename) const</td></tr>
<tr class="separator:ae7564b2790c10576e51ede8bcd412287"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9432a268551b74ccfcf6809590ef756"><td class="memItemLeft" align="right" valign="top">ON__UINT64&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ab9432a268551b74ccfcf6809590ef756">HashCalculationTime</a> () const</td></tr>
<tr class="separator:ab9432a268551b74ccfcf6809590ef756"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac810581378d560ecd1122d4f08f75627"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ac810581378d560ecd1122d4f08f75627">IsNotSet</a> () const</td></tr>
<tr class="separator:ac810581378d560ecd1122d4f08f75627"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8ba2d45e64ea148145997d3e002c8cd8"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a8ba2d45e64ea148145997d3e002c8cd8">IsSameBufferContent</a> (const void *buffer, size_t byte_count) const</td></tr>
<tr class="memdesc:a8ba2d45e64ea148145997d3e002c8cd8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test a buffer to see if it has a matching size and SHA-1 hash. <a href="#a8ba2d45e64ea148145997d3e002c8cd8">More...</a><br /></td></tr>
<tr class="separator:a8ba2d45e64ea148145997d3e002c8cd8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af6e3086aca27c2cd0253a810891c29f4"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af6e3086aca27c2cd0253a810891c29f4">IsSameFileContent</a> (FILE *fp) const</td></tr>
<tr class="memdesc:af6e3086aca27c2cd0253a810891c29f4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test a file to see if it has a matching size and SHA-1 hash. Paramters: fp - [in] pointer to file opened with ON::OpenFile(...,"rb") bSkipTimeCheck - [in] if true, the time of last modification is not checked. <a href="#af6e3086aca27c2cd0253a810891c29f4">More...</a><br /></td></tr>
<tr class="separator:af6e3086aca27c2cd0253a810891c29f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad5ca405dc369311f5bffd22d7862e455"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad5ca405dc369311f5bffd22d7862e455">IsSameFileContent</a> (const wchar_t *filename) const</td></tr>
<tr class="memdesc:ad5ca405dc369311f5bffd22d7862e455"><td class="mdescLeft">&#160;</td><td class="mdescRight">Test a file to see if it has a matching size and SHA-1 content hash. Paramters: filename - [in] <a href="#ad5ca405dc369311f5bffd22d7862e455">More...</a><br /></td></tr>
<tr class="separator:ad5ca405dc369311f5bffd22d7862e455"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52e7f03e75d056b67069c012e08010d8"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a52e7f03e75d056b67069c012e08010d8">IsSameFileContent</a> (const char *filename) const</td></tr>
<tr class="separator:a52e7f03e75d056b67069c012e08010d8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a439d720a7f338e9209e3baea2e45c5a1"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a439d720a7f338e9209e3baea2e45c5a1">IsSet</a> () const</td></tr>
<tr class="separator:a439d720a7f338e9209e3baea2e45c5a1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a5366df28bef7eb59b473adba60a0918e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5366df28bef7eb59b473adba60a0918e">NameHash</a> () const</td></tr>
<tr class="separator:a5366df28bef7eb59b473adba60a0918e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8d3dc7bbb26283d252d221b77773dba9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a8d3dc7bbb26283d252d221b77773dba9">operator=</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;)=default</td></tr>
<tr class="separator:a8d3dc7bbb26283d252d221b77773dba9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ad3129e28b29b296a62b38484f960d4b7"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad3129e28b29b296a62b38484f960d4b7">Read</a> (class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &amp;archive)</td></tr>
<tr class="separator:ad3129e28b29b296a62b38484f960d4b7"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4c2840fc2b86e10e2f7cfdf1aa9f3505"><td class="memItemLeft" align="right" valign="top">bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a4c2840fc2b86e10e2f7cfdf1aa9f3505">Write</a> (class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &amp;archive) const</td></tr>
<tr class="separator:a4c2840fc2b86e10e2f7cfdf1aa9f3505"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a480080e26dcb714010b5530dc46893c9"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a480080e26dcb714010b5530dc46893c9">Compare</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;b)</td></tr>
<tr class="memdesc:a480080e26dcb714010b5530dc46893c9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compares all fields <a href="#a480080e26dcb714010b5530dc46893c9">More...</a><br /></td></tr>
<tr class="separator:a480080e26dcb714010b5530dc46893c9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af605df4c83d4a65433799cee60af2e8a"><td class="memItemLeft" align="right" valign="top">static int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#af605df4c83d4a65433799cee60af2e8a">CompareContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;b)</td></tr>
<tr class="memdesc:af605df4c83d4a65433799cee60af2e8a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compares content byte count and content SHA-1 <a href="#af605df4c83d4a65433799cee60af2e8a">More...</a><br /></td></tr>
<tr class="separator:af605df4c83d4a65433799cee60af2e8a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:afd47df95f4fb24a81e6ac811e77defba"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#afd47df95f4fb24a81e6ac811e77defba">CompareResultFromUnsigned</a> (unsigned int compare_result_as_unsigned)</td></tr>
<tr class="separator:afd47df95f4fb24a81e6ac811e77defba"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3e5a9cfe8a318b1ff4e971cd0477726e"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a3e5a9cfe8a318b1ff4e971cd0477726e">Create</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_name_hash, ON__UINT64 byte_count, <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_content_hash, ON__UINT64 hash_time, ON__UINT64 content_last_modified_time)</td></tr>
<tr class="separator:a3e5a9cfe8a318b1ff4e971cd0477726e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa9141290fec1fa9b07ff16f281443932"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aa9141290fec1fa9b07ff16f281443932">CreateFromBuffer</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_name_hash, const void *buffer, size_t byte_count)</td></tr>
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<tr class="memitem:a2202fe28fa7d9e14cc93be710019f72f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a2202fe28fa7d9e14cc93be710019f72f">CreateFromFile</a> (<a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> sha1_file_name_hash, FILE *fp)</td></tr>
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<tr class="memitem:ad417b2a7f72f85f678d6bb5ef5644997"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ad417b2a7f72f85f678d6bb5ef5644997">CreateFromFile</a> (const wchar_t *filename)</td></tr>
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<tr class="memitem:aba712f1993d5b41b03ffd2f15ea62f03"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aba712f1993d5b41b03ffd2f15ea62f03">CreateFromFile</a> (const char *filename)</td></tr>
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<tr class="memitem:a141c0fe606c239c1c024914d6dab896e"><td class="memItemLeft" align="right" valign="top">static bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a141c0fe606c239c1c024914d6dab896e">DifferentContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;b)</td></tr>
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<tr class="memitem:aa495c50d35d777aeb70226bac13e5401"><td class="memItemLeft" align="right" valign="top">static bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#aa495c50d35d777aeb70226bac13e5401">EqualContent</a> (const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;a, const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;b)</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-attribs"></a>
Static Public Attributes</h2></td></tr>
<tr class="memitem:ab9616094ebaee5e3d8e0b68aa8e459be"><td class="memItemLeft" align="right" valign="top">static const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../db/d13/class_o_n___content_hash.html#ab9616094ebaee5e3d8e0b68aa8e459be">Unset</a></td></tr>
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<h2 class="groupheader">Member Enumeration Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a5a6e077d6893727a93e91d3f1c9e847d">&#9670;&nbsp;</a></span>CompareResult</h2>
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<td class="memname">enum <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> : unsigned char</td>
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<span class="mlabels"><span class="mlabel">strong</span></span> </td>
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<p><a class="el" href="../../db/d13/class_o_n___content_hash.html#af0a7f308fe41d1ffbc67f3ccc644ab29" title="Compare the information used to set this content hash with the contents of the file. ">ON_ContentHash::Compare</a> are the possible results of calling ON_ContentHash::CompareFile(). </p>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847dac9f88e098f6fe4e4e112eeb05ccb9671"></a>Unset&#160;</td><td class="fielddoc"><p>Not set. This value is never returned by ON_ContentHash::CheckFile(). </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9"></a>EqualContent&#160;</td><td class="fielddoc"><p>File exists and its size and content matches the information used to set the content hash. </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847da9c6b349504605b60c2709bd46525764d"></a>DifferentContent&#160;</td><td class="fielddoc"><p>File exists and its size or content differs from the information used to set the content hash. Unable to reliably determine which is newer. </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09"></a>DifferentContentFileIsOlder&#160;</td><td class="fielddoc"><p>File exists and its size or content differs from the information used to set the content hash. The file's laste modified time is older than <a class="el" href="../../db/d13/class_o_n___content_hash.html#a999cdca34407c6727c8a4ad7cc9196ca">ContentLastModifiedTime()</a>. </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847da0a64794cb339dc5c7ef05da3c63c60df"></a>ContentDifferentFileIsNewer&#160;</td><td class="fielddoc"><p>File exists and its size or content differs from the information used to set the content hash. The file's last modified time is newer than <a class="el" href="../../db/d13/class_o_n___content_hash.html#a999cdca34407c6727c8a4ad7cc9196ca">ContentLastModifiedTime()</a>. </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847daab7e9f2fa8b2404bc25061dd572e9797"></a>FileDoesNotExist&#160;</td><td class="fielddoc"><p>File does not exist. </p>
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<tr><td class="fieldname"><a id="a5a6e077d6893727a93e91d3f1c9e847daf6c4270bbdfbbf35aa42b5fd44edf750"></a>FileSystemFailure&#160;</td><td class="fielddoc"><p>File cannot be opened, read, or some other file system issue prevents checking. </p>
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<h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a4eda351919e955f7dfd8a3699750bb03">&#9670;&nbsp;</a></span>ON_ContentHash() <span class="overload">[1/2]</span></h2>
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<td class="memname">ON_ContentHash::ON_ContentHash </td>
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<h2 class="memtitle"><span class="permalink"><a href="#a0cac60bf6da07ee8f72cba9d729e3b9f">&#9670;&nbsp;</a></span>~ON_ContentHash()</h2>
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<td class="memname">ON_ContentHash::~ON_ContentHash </td>
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<h2 class="memtitle"><span class="permalink"><a href="#a36ceb39cd5b7969edc91cfc748c73791">&#9670;&nbsp;</a></span>ON_ContentHash() <span class="overload">[2/2]</span></h2>
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<td class="memname">ON_ContentHash::ON_ContentHash </td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
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<h2 class="groupheader">Member Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#a3d5536333ff8bbebf6b341355cca1172">&#9670;&nbsp;</a></span>ByteCount()</h2>
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<td class="memname">ON__UINT64 ON_ContentHash::ByteCount </td>
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<dl class="section return"><dt>Returns</dt><dd>Number of bytes in the content (typically a file or buffer). </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#af0a7f308fe41d1ffbc67f3ccc644ab29">&#9670;&nbsp;</a></span>Compare() <span class="overload">[1/3]</span></h2>
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<td class="memname"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> ON_ContentHash::Compare </td>
<td>(</td>
<td class="paramtype">const wchar_t *&#160;</td>
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<p>Compare the information used to set this content hash with the contents of the file. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">file_path</td><td>[in]</td></tr>
<tr><td class="paramname">bFastCompare</td><td>[in] If bFastCompare is true and the file_path, create time, last modified time, and size exactly match the values in <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>, then <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9" title="File exists and its size and content matches the information used to set the content hash...">ON_ContentHash::CompareResult::EqualContent</a> is returned without performing the expensive SHA1 test on the file's content. If bFastCompare is false, the SHA-1 hash of the file's content will be calculated and compared before <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847dab5294ef36dd9b816f7293624759fa0a9" title="File exists and its size and content matches the information used to set the content hash...">ON_ContentHash::CompareResult::EqualContent</a> is returned.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Result of compare test as a <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d" title="ON_ContentHash::Compare are the possible results of calling ON_ContentHash::CompareFile(). ">ON_ContentHash::CompareResult</a> enum. <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09" title="File exists and its size or content differs from the information used to set the content hash...">ON_ContentHash::CompareResult::DifferentContentFileIsOlder</a> means file_path content is different and older than "this". ON_ContentHash::CompareResult::DifferentContentFileIsNewer means file_path content is different and newer than "this". </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a6fdda90f92f7cd5e935091cb4a403df0">&#9670;&nbsp;</a></span>Compare() <span class="overload">[2/3]</span></h2>
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<td class="memname"><a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> ON_ContentHash::Compare </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&#160;</td>
<td class="paramname"><em>file_content_hash</em></td><td>)</td>
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<p>Compare the byte count and SHA-1 content hash. </p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">file_content_hash</td><td>[in] <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> to compare against this one.</td></tr>
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<dl class="section return"><dt>Returns</dt><dd>Result of compare test as a <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d" title="ON_ContentHash::Compare are the possible results of calling ON_ContentHash::CompareFile(). ">ON_ContentHash::CompareResult</a> enum. <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847da1960e05afce81d6a258b850d82611a09" title="File exists and its size or content differs from the information used to set the content hash...">ON_ContentHash::CompareResult::DifferentContentFileIsOlder</a> means file_content_hash is different and older than "this". ON_ContentHash::CompareResult::DifferentContentFileIsNewer means file_content_hash is different and newer than "this". </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a480080e26dcb714010b5530dc46893c9">&#9670;&nbsp;</a></span>Compare() <span class="overload">[3/3]</span></h2>
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<td class="memname">static int ON_ContentHash::Compare </td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
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<p>Compares all fields </p>
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<h2 class="memtitle"><span class="permalink"><a href="#af605df4c83d4a65433799cee60af2e8a">&#9670;&nbsp;</a></span>CompareContent()</h2>
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<td class="memname">static int ON_ContentHash::CompareContent </td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
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<p>Compares content byte count and content SHA-1 </p>
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<h2 class="memtitle"><span class="permalink"><a href="#afd47df95f4fb24a81e6ac811e77defba">&#9670;&nbsp;</a></span>CompareResultFromUnsigned()</h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html#a5a6e077d6893727a93e91d3f1c9e847d">ON_ContentHash::CompareResult</a> ON_ContentHash::CompareResultFromUnsigned </td>
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<h2 class="memtitle"><span class="permalink"><a href="#ad6dcfec1c56e53f3576a628997483003">&#9670;&nbsp;</a></span>ContentHash()</h2>
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<td class="memname"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> ON_ContentHash::ContentHash </td>
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<dl class="section return"><dt>Returns</dt><dd>SHA-1 hash of the content (typically a buffer or file). </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a999cdca34407c6727c8a4ad7cc9196ca">&#9670;&nbsp;</a></span>ContentLastModifiedTime()</h2>
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<td class="memname">ON__UINT64 ON_ContentHash::ContentLastModifiedTime </td>
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<dl class="section return"><dt>Returns</dt><dd><p class="startdd">Time the hashed content was last modifed in seconds since January 1, 1970 UCT. 0 is returned if this time is not known.</p>
<p>This time should be used for important decisions as a last resort.</p>
<p>When hash values differ, this time may be considered to which content is newer (or most recently copied).</p>
<p class="enddd">Unfortunately, in many cases this time is often unknown and incorrectly set. For example, some file systems set the last modified time of a copy of an "old" file to the time the copy was created. Thus a copy of "old" content may appear to be newer than "new" content that has not been copied. </p>
</dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a3e5a9cfe8a318b1ff4e971cd0477726e">&#9670;&nbsp;</a></span>Create()</h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::Create </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td>
<td class="paramname"><em>sha1_name_hash</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">ON__UINT64&#160;</td>
<td class="paramname"><em>byte_count</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td>
<td class="paramname"><em>sha1_content_hash</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">ON__UINT64&#160;</td>
<td class="paramname"><em>hash_time</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">ON__UINT64&#160;</td>
<td class="paramname"><em>content_last_modified_time</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">sha1_name_hash</td><td>[in] The SHA-1 hash of the name (typically a full path file name). When the content is identified by a file name in a file system, use <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a9cb83e4e627ac917404722990efa2f0c" title="Return a hash of the file system path that is independent of the size of wchar_t, constant across pla...">ON_SHA1_Hash::FileSystemPathHash()</a> to calculate this value.</td></tr>
<tr><td class="paramname">byte_count</td><td>[in] number of bytes in the content.</td></tr>
<tr><td class="paramname">sha1_content_hash</td><td>[in] The SHA-1 hash of the content (typically a buffer or file). You may use ON_SHA1_Has::FileContentHash() or <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#aed137337f874a15956aaa4f2d0ebe912">ON_SHA1_Hash::BufferContentHash()</a> to calculate this value.</td></tr>
<tr><td class="paramname">hash_time</td><td>[in] The time the sha1_hash was calculated in seconds since January 1, 1970 UCT. If 0 is passed in, the current time is used.</td></tr>
<tr><td class="paramname">content_last_modified_time</td><td>[in] Pass 0 if not known. The time the hashed information that was last modifed in seconds since January 1, 1970 UCT. If content_last_modified_time &gt; hash_time, then 0 is used.</td></tr>
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</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the parameters, </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aa9141290fec1fa9b07ff16f281443932">&#9670;&nbsp;</a></span>CreateFromBuffer()</h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::CreateFromBuffer </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td>
<td class="paramname"><em>sha1_name_hash</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const void *&#160;</td>
<td class="paramname"><em>buffer</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>byte_count</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sha1_name_hash</td><td>[in] A SHA-1 hash of the name associated with this content. If the buffer has no name, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a50683fde45600ba340667429fd8fd686">ON_SHA1_Hash::ZeroDigest</a>. If the buffer has an empty name, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a5fbd8257f1b9c3fdfc929d3869113924">ON_SHA1_Hash::EmptyContentHash</a>.</td></tr>
<tr><td class="paramname">buffer</td><td>[in]</td></tr>
<tr><td class="paramname">byte_count</td><td>[in] number of bytes in buffer[]</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash calculated from the parameters, hash time = now, and content last modified time = 0. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a2202fe28fa7d9e14cc93be710019f72f">&#9670;&nbsp;</a></span>CreateFromFile() <span class="overload">[1/3]</span></h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::CreateFromFile </td>
<td>(</td>
<td class="paramtype"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a>&#160;</td>
<td class="paramname"><em>sha1_file_name_hash</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">FILE *&#160;</td>
<td class="paramname"><em>fp</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
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<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">sha1_file_name_hash</td><td>[in] A SHA-1 hash of the file name associated with fp. Use ON_SHA1_Has::FileSystemPathHash() to create the value. If the name is not known, pass <a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html#a50683fde45600ba340667429fd8fd686">ON_SHA1_Hash::ZeroDigest</a>.</td></tr>
<tr><td class="paramname">fp</td><td>[in] pointer to a file opened with ON:FileOpen(...,"rb")</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the file, hash time = now, and content last modifed time set from the file system information returned by <a class="el" href="../../dd/da7/class_o_n___file_stream.html#ac344f0e78881d31fe07aa99f63955700" title="Portable wrapper for C runtime fstat(). ">ON_FileStream::GetFileInformation()</a>. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad417b2a7f72f85f678d6bb5ef5644997">&#9670;&nbsp;</a></span>CreateFromFile() <span class="overload">[2/3]</span></h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::CreateFromFile </td>
<td>(</td>
<td class="paramtype">const wchar_t *&#160;</td>
<td class="paramname"><em>filename</em></td><td>)</td>
<td></td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">filename</td><td>[in] name of file.</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>An <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> with size and SHA-1 hash and times set from the file, hash time = now, and content last modifed time set from the file system information returned by <a class="el" href="../../dd/da7/class_o_n___file_stream.html#ac344f0e78881d31fe07aa99f63955700" title="Portable wrapper for C runtime fstat(). ">ON_FileStream::GetFileInformation()</a>. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#aba712f1993d5b41b03ffd2f15ea62f03">&#9670;&nbsp;</a></span>CreateFromFile() <span class="overload">[3/3]</span></h2>
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<td class="memname">static <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::CreateFromFile </td>
<td>(</td>
<td class="paramtype">const char *&#160;</td>
<td class="paramname"><em>filename</em></td><td>)</td>
<td></td>
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</td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<h2 class="memtitle"><span class="permalink"><a href="#a141c0fe606c239c1c024914d6dab896e">&#9670;&nbsp;</a></span>DifferentContent()</h2>
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<td class="memname">static bool ON_ContentHash::DifferentContent </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
<td class="paramname"><em>b</em>&#160;</td>
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<td>)</td>
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<dl class="section return"><dt>Returns</dt><dd>true if a and b have differnt <a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount()</a> or SHA-1 content hash values. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a6c9f4a8d99838ea4415042a0eab78dd2">&#9670;&nbsp;</a></span>Dump()</h2>
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<td class="memname">void ON_ContentHash::Dump </td>
<td>(</td>
<td class="paramtype">class <a class="el" href="../../d2/da3/class_o_n___text_log.html">ON_TextLog</a> &amp;&#160;</td>
<td class="paramname"><em>text_log</em></td><td>)</td>
<td> const</td>
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<h2 class="memtitle"><span class="permalink"><a href="#aa495c50d35d777aeb70226bac13e5401">&#9670;&nbsp;</a></span>EqualContent()</h2>
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<td class="memname">static bool ON_ContentHash::EqualContent </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
<td class="paramname"><em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
<td class="paramname"><em>b</em>&#160;</td>
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<td>)</td>
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<dl class="section return"><dt>Returns</dt><dd>true if a and b have identical <a class="el" href="../../db/d13/class_o_n___content_hash.html#a3d5536333ff8bbebf6b341355cca1172">ByteCount()</a> and SHA-1 content hash values. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ae7564b2790c10576e51ede8bcd412287">&#9670;&nbsp;</a></span>EqualFileNameSizeAndTime()</h2>
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<td class="memname">bool ON_ContentHash::EqualFileNameSizeAndTime </td>
<td>(</td>
<td class="paramtype">const wchar_t *&#160;</td>
<td class="paramname"><em>filename</em></td><td>)</td>
<td> const</td>
</tr>
</table>
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<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">filename</td><td>[in]</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>True if the file exists, has size &gt; 0, has the same name, same size, and same last modified time than this content hash. False otherwise. </dd></dl>
<p>Faster than the <a class="el" href="../../db/d13/class_o_n___content_hash.html#aa495c50d35d777aeb70226bac13e5401">ON_ContentHash::EqualContent()</a> and reliable if this content hash was set on the same file system. Unreliable if the file system does not correctly set last modified times or the file was modified less than 2 seconds before the call. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9432a268551b74ccfcf6809590ef756">&#9670;&nbsp;</a></span>HashCalculationTime()</h2>
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<td class="memname">ON__UINT64 ON_ContentHash::HashCalculationTime </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Time the hash SHA-1 hash was cacluated in seconds since January 1, 1970 UCT. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ac810581378d560ecd1122d4f08f75627">&#9670;&nbsp;</a></span>IsNotSet()</h2>
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<td class="memname">bool ON_ContentHash::IsNotSet </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if the SHA-1 hash is not set. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a8ba2d45e64ea148145997d3e002c8cd8">&#9670;&nbsp;</a></span>IsSameBufferContent()</h2>
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<td class="memname">bool ON_ContentHash::IsSameBufferContent </td>
<td>(</td>
<td class="paramtype">const void *&#160;</td>
<td class="paramname"><em>buffer</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">size_t&#160;</td>
<td class="paramname"><em>byte_count</em>&#160;</td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td> const</td>
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<p>Test a buffer to see if it has a matching size and SHA-1 hash. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">buffer</td><td>[in]</td></tr>
<tr><td class="paramname">byte_count</td><td>[in] number of bytes in buffer[]</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>True if the buffer has a matching byte_count and SHA-1 hash. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#af6e3086aca27c2cd0253a810891c29f4">&#9670;&nbsp;</a></span>IsSameFileContent() <span class="overload">[1/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
<td>(</td>
<td class="paramtype">FILE *&#160;</td>
<td class="paramname"><em>fp</em></td><td>)</td>
<td> const</td>
</tr>
</table>
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<p>Test a file to see if it has a matching size and SHA-1 hash. Paramters: fp - [in] pointer to file opened with ON::OpenFile(...,"rb") bSkipTimeCheck - [in] if true, the time of last modification is not checked. </p>
<dl class="section return"><dt>Returns</dt><dd>True if the file existes, can be read, and has a matching byte_count and SHA-1 hash. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ad5ca405dc369311f5bffd22d7862e455">&#9670;&nbsp;</a></span>IsSameFileContent() <span class="overload">[2/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
<td>(</td>
<td class="paramtype">const wchar_t *&#160;</td>
<td class="paramname"><em>filename</em></td><td>)</td>
<td> const</td>
</tr>
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<p>Test a file to see if it has a matching size and SHA-1 content hash. Paramters: filename - [in] </p>
<dl class="section return"><dt>Returns</dt><dd>True if the file exists, can be read, and has a matching byte_count and SHA-1 content hash. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a52e7f03e75d056b67069c012e08010d8">&#9670;&nbsp;</a></span>IsSameFileContent() <span class="overload">[3/3]</span></h2>
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<td class="memname">bool ON_ContentHash::IsSameFileContent </td>
<td>(</td>
<td class="paramtype">const char *&#160;</td>
<td class="paramname"><em>filename</em></td><td>)</td>
<td> const</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a439d720a7f338e9209e3baea2e45c5a1">&#9670;&nbsp;</a></span>IsSet()</h2>
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<td class="memname">bool ON_ContentHash::IsSet </td>
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<td class="paramname"></td><td>)</td>
<td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>True if the SHA-1 hash has been set. </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a5366df28bef7eb59b473adba60a0918e">&#9670;&nbsp;</a></span>NameHash()</h2>
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<td class="memname"><a class="el" href="../../dd/ddf/class_o_n___s_h_a1___hash.html">ON_SHA1_Hash</a> ON_ContentHash::NameHash </td>
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<dl class="section return"><dt>Returns</dt><dd>SHA-1 hash of the name (typically a full path file name). </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#a8d3dc7bbb26283d252d221b77773dba9">&#9670;&nbsp;</a></span>operator=()</h2>
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<td class="memname"><a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a>&amp; ON_ContentHash::operator= </td>
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<td class="paramtype">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> &amp;&#160;</td>
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<span class="mlabels"><span class="mlabel">default</span></span> </td>
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<h2 class="memtitle"><span class="permalink"><a href="#ad3129e28b29b296a62b38484f960d4b7">&#9670;&nbsp;</a></span>Read()</h2>
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<td class="memname">bool ON_ContentHash::Read </td>
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<td class="paramtype">class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
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<h2 class="memtitle"><span class="permalink"><a href="#a4c2840fc2b86e10e2f7cfdf1aa9f3505">&#9670;&nbsp;</a></span>Write()</h2>
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<td class="memname">bool ON_ContentHash::Write </td>
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<td class="paramtype">class <a class="el" href="../../db/d16/class_o_n___binary_archive.html">ON_BinaryArchive</a> &amp;&#160;</td>
<td class="paramname"><em>archive</em></td><td>)</td>
<td> const</td>
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<h2 class="groupheader">Member Data Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ab9616094ebaee5e3d8e0b68aa8e459be">&#9670;&nbsp;</a></span>Unset</h2>
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<td class="memname">const <a class="el" href="../../db/d13/class_o_n___content_hash.html">ON_ContentHash</a> ON_ContentHash::Unset</td>
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