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Merge pull request #17436 from vpisarev:fix_python_io

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* fixed #17044
1. fixed Python part of the tutorial about using OpenCV XML-YAML-JSON I/O functionality from C++ and Python.
2. added startWriteStruct() and endWriteStruct() methods to FileStorage
3. modifed FileStorage::write() methods to make them work well inside sequences, not only mappings.

* try to fix the doc builder

* added Python regression test for FileStorage I/O API ([TODO] iterating through long sequences can be very slow)

* fixed yaml testing
This commit is contained in:
Vadim Pisarevsky
2020-06-01 14:33:09 +03:00
committed by GitHub
parent 8de176988d
commit 5489735258
6 changed files with 169 additions and 21 deletions
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modules/core/src/persistence_xml.cpp
+1 -1
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@@ -853,7 +853,7 @@ void icvXMLWriteScalar( CvFileStorage* fs, const char* key, const char* data, in
char* ptr = fs->buffer;
int new_offset = (int)(ptr - fs->buffer_start) + len;
if( key )
if( key && key[0] != '\0' )
CV_Error( CV_StsBadArg, "elements with keys can not be written to sequence" );
fs->struct_flags = CV_NODE_SEQ;