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Oliver Behnke
graphicsframework
Commits
1c241859
Commit
1c241859
authored
16 years ago
by
Oliver Bock
Browse files
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General improvement
* Better error/exception handling * Better memory management * Minor bug fix
parent
cd242921
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Changes
1
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1 changed file
src/framework/Libxml2Adapter.cpp
+49
-10
49 additions, 10 deletions
src/framework/Libxml2Adapter.cpp
with
49 additions
and
10 deletions
src/framework/Libxml2Adapter.cpp
+
49
−
10
View file @
1c241859
...
@@ -52,35 +52,74 @@ string Libxml2Adapter::getSingleNodeContentByXPath(const string xpath)
...
@@ -52,35 +52,74 @@ string Libxml2Adapter::getSingleNodeContentByXPath(const string xpath)
// no document available!
// no document available!
if
(
!
m_xmlDocument
)
return
(
""
);
if
(
!
m_xmlDocument
)
return
(
""
);
// prepare xpath search
string
result
=
""
;
stringstream
buffer
;
// prepare xpath context
xmlXPathContextPtr
xpathCtx
=
xmlXPathNewContext
(
m_xmlDocument
);
xmlXPathContextPtr
xpathCtx
=
xmlXPathNewContext
(
m_xmlDocument
);
if
(
xpathCtx
==
NULL
)
{
cerr
<<
"Error getting XPath context!"
<<
endl
;
return
(
""
);
}
// prepare xpath expression
xmlChar
*
xpathExpr
=
xmlCharStrdup
(
xpath
.
c_str
());
xmlChar
*
xpathExpr
=
xmlCharStrdup
(
xpath
.
c_str
());
if
(
xpathExpr
==
NULL
)
{
cerr
<<
"Error preparing XPath expression: "
<<
xpath
<<
endl
;
xmlXPathFreeContext
(
xpathCtx
);
return
(
""
);
}
// run xpath query
// run xpath query
xmlXPathObjectPtr
xpathObj
=
xmlXPathEvalExpression
(
xpathExpr
,
xpathCtx
);
xmlXPathObjectPtr
xpathObj
=
xmlXPathEvalExpression
(
xpathExpr
,
xpathCtx
);
if
(
xpathObj
==
NULL
)
{
cerr
<<
"Error evaluating XPath expression: "
<<
xpath
<<
endl
;
xmlFree
(
xpathExpr
);
xmlXPathFreeContext
(
xpathCtx
);
return
(
""
);
}
// retrieve node set returned by xpath query
xmlNodeSetPtr
nodes
=
xpathObj
->
nodesetval
;
xmlNodeSetPtr
nodes
=
xpathObj
->
nodesetval
;
// how many nodes did we find?
// how many nodes did we find?
int
size
=
(
nodes
)
?
nodes
->
nodeNr
:
0
;
int
size
=
(
nodes
)
?
nodes
->
nodeNr
:
0
;
if
(
size
=
=
0
)
{
if
(
size
<
=
0
)
{
cerr
<<
"No node found using XPath expression: "
<<
xpath
<<
endl
;
cerr
<<
"No node found using XPath expression: "
<<
xpath
<<
endl
;
re
turn
(
""
)
;
re
sult
=
""
;
}
}
else
if
(
size
<
1
)
{
else
if
(
size
>
1
)
{
cerr
<<
"More than node found using XPath expression: "
<<
xpath
<<
endl
;
cerr
<<
"More than node found using XPath expression: "
<<
xpath
<<
endl
;
re
turn
(
""
)
;
re
sult
=
""
;
}
}
else
{
// prepare conversion stream
ostringstream
converter
;
converter
.
exceptions
(
ios_base
::
badbit
|
ios_base
::
failbit
);
// get xml content
xmlChar
*
nodeContent
=
xmlNodeListGetString
(
m_xmlDocument
,
nodes
->
nodeTab
[
0
]
->
xmlChildrenNode
,
1
);
try
{
// convert xml contents
// convert xml contents
buffer
<<
xmlNodeListGetString
(
m_xmlDocument
,
nodes
->
nodeTab
[
0
]
->
xmlChildrenNode
,
1
);
converter
<<
nodeContent
;
result
=
converter
.
str
();
}
catch
(
ios_base
::
failure
)
{
cerr
<<
"Error converting XPath node content!"
<<
endl
;
result
=
""
;
}
// clean up
xmlFree
(
nodeContent
);
}
// clean up
// clean up
xmlFree
(
xpathExpr
);
xmlXPathFreeObject
(
xpathObj
);
xmlXPathFreeObject
(
xpathObj
);
xmlXPathFreeContext
(
xpathCtx
);
xmlXPathFreeContext
(
xpathCtx
);
return
(
buffer
.
str
()
);
return
(
result
);
}
}
string
Libxml2Adapter
::
getSingleNodeContentByXPath
(
const
string
xml
,
const
string
url
,
const
string
xpath
)
string
Libxml2Adapter
::
getSingleNodeContentByXPath
(
const
string
xml
,
const
string
url
,
const
string
xpath
)
...
...
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