issue with spaces in <locations>

[Anders-Markvardsen]

This ticket is blocks : TRAC9427

Reported by Peter Willendrup

Loading the attached IDF gives the error

Error in execution of algorithm LoadInstrument:
bad lexical cast: source type value could not be interpreted as target
Error in execution of algorithm LoadEmptyInstrument:
bad lexical cast: source type value could not be interpreted as target

This IDF previously worked with release mantid-3.1.20140321.1714

Preliminary investigation indicate that this due to now parser can't handle spaces in <locations> attribute values.

Fix this and also give more meaningful error message if attribute values of <locations> are not valid

It was found by substituting

<component type="MonNDtype-0" name="nD_Mantid_0" idlist="MonNDtype-0-list">
<locations x=" 0.285491" y="-1.5" y-end="1.5" n-elements=" 300" z=" 48.019" rot="61.6534107436081" axis-x="0" axis-y="1" axis-z="0" />
</component>

<type name="MonNDtype-0">
<component type="pixel-0">
<locations r=" 3.99948" t=" -73.3674" t-end=" 73.3676" n-elements=" 100"/>
</component>

</type>

With

<component type="MonNDtype-0" name="nD_Mantid_0" idlist="MonNDtype-0-list">
<locations x="0.285491" y="-1.5" y-end="1.5" n-elements="300" z="48.019" rot="61.6534107436081" axis-x="0" axis-y="1" axis-z="0" />
</component>

<type name="MonNDtype-0">
<component type="pixel-0">
<locations r="3.99948" t="-73.3674" t-end="73.3676" n-elements="100"/>
</component>

</type>

and idf was found to load

[Anders-Markvardsen]

This issue was originally trac ticket 9406

[Anders-Markvardsen]

http://trac.mantidproject.org/mantid/raw-attachment/ticket/9406/ILL_H16_IN5.instr.xml
(uploaded by @Anders-Markvardsen on 2014-05-02T07:56:45)

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