beremiz

py_ext: add CSV file reading POUs in python extension library

2022-12-16, Edouard Tisserant
3c60c78dfa5d
Parents 39ae17a1cabe
Children 2299f25779ce
py_ext: add CSV file reading POUs in python extension library
2 files changed, 1755 insertions(+), 4 deletions(-)
  • +1656 -3
    py_ext/pous.xml
  • +99 -1
    py_ext/py_ext.py
    • --- a/py_ext/pous.xml Fri Dec 16 13:41:03 2022 +0100
    +++ b/py_ext/pous.xml Fri Dec 16 13:43:38 2022 +0100
    @@ -1,10 +1,10 @@
    <?xml version='1.0' encoding='utf-8'?>
    <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.plcopen.org/xml/tc6_0201" xmlns:xhtml="http://www.w3.org/1999/xhtml" xsi:schemaLocation="http://www.plcopen.org/xml/tc6_0201">
    <fileHeader companyName="Beremiz" productName="Beremiz" productVersion="0.0" creationDateTime="2008-12-14T16:53:26"/>
    - <contentHeader name="Beremiz non-standard POUs library" modificationDateTime="2014-03-17T08:07:24">
    + <contentHeader name="Beremiz non-standard POUs library" modificationDateTime="2022-12-16T11:59:30">
    <coordinateInfo>
    <fbd>
    - <scaling x="0" y="0"/>
    + <scaling x="8" y="8"/>
    </fbd>
    <ld>
    <scaling x="0" y="0"/>
    @@ -17,6 +17,1646 @@
    <types>
    <dataTypes/>
    <pous>
    + <pou name="csv_read_by_string" pouType="functionBlock">
    + <interface>
    + <externalVars>
    + <variable name="pyext_csv_update">
    + <type>
    + <BOOL/>
    + </type>
    + </variable>
    + </externalVars>
    + <outputVars>
    + <variable name="ACK">
    + <type>
    + <BOOL/>
    + </type>
    + </variable>
    + <variable name="RESULT">
    + <type>
    + <string/>
    + </type>
    + </variable>
    + </outputVars>
    + <inputVars>
    + <variable name="FILE_NAME">
    + <type>
    + <string/>
    + </type>
    + </variable>
    + <variable name="ROW">
    + <type>
    + <string/>
    + </type>
    + </variable>
    + <variable name="COLUMN">
    + <type>
    + <string/>
    + </type>
    + </variable>
    + </inputVars>
    + <localVars>
    + <variable name="OLDCODE">
    + <type>
    + <string/>
    + </type>
    + </variable>
    + <variable name="py_eval">
    + <type>
    + <derived name="python_eval"/>
    + </type>
    + </variable>
    + <variable name="R_TRIG0">
    + <type>
    + <derived name="R_TRIG"/>
    + </type>
    + </variable>
    + <variable name="R_TRIG1">
    + <type>
    + <derived name="R_TRIG"/>
    + </type>
    + </variable>
    + <variable name="SR0">
    + <type>
    + <derived name="SR"/>
    + </type>
    + </variable>
    + </localVars>
    + </interface>
    + <body>
    + <FBD>
    + <block localId="7" typeName="CONCAT" executionOrderId="0" height="192" width="64">
    + <position x="360" y="112"/>
    + <inputVariables>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="8">
    + <position x="360" y="144"/>
    + <position x="320" y="144"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN2">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="9">
    + <position x="360" y="168"/>
    + <position x="152" y="168"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN3">
    + <connectionPointIn>
    + <relPosition x="0" y="80"/>
    + <connection refLocalId="10">
    + <position x="360" y="192"/>
    + <position x="320" y="192"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN4">
    + <connectionPointIn>
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    + <connection refLocalId="11">
    + <position x="360" y="216"/>
    + <position x="152" y="216"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN5">
    + <connectionPointIn>
    + <relPosition x="0" y="128"/>
    + <connection refLocalId="12">
    + <position x="360" y="240"/>
    + <position x="320" y="240"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN6">
    + <connectionPointIn>
    + <relPosition x="0" y="152"/>
    + <connection refLocalId="13">
    + <position x="360" y="264"/>
    + <position x="152" y="264"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN7">
    + <connectionPointIn>
    + <relPosition x="0" y="176"/>
    + <connection refLocalId="14">
    + <position x="360" y="288"/>
    + <position x="320" y="288"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <inVariable localId="8" executionOrderId="0" height="24" width="160" negated="false">
    + <position x="160" y="128"/>
    + <connectionPointOut>
    + <relPosition x="160" y="16"/>
    + </connectionPointOut>
    + <expression>'CSVRdStr("'</expression>
    + </inVariable>
    + <inVariable localId="9" executionOrderId="0" height="32" width="112" negated="false">
    + <position x="40" y="152"/>
    + <connectionPointOut>
    + <relPosition x="112" y="16"/>
    + </connectionPointOut>
    + <expression>FILE_NAME</expression>
    + </inVariable>
    + <inVariable localId="10" executionOrderId="0" height="24" width="112" negated="false">
    + <position x="208" y="184"/>
    + <connectionPointOut>
    + <relPosition x="112" y="8"/>
    + </connectionPointOut>
    + <expression>'","'</expression>
    + </inVariable>
    + <inVariable localId="11" executionOrderId="0" height="32" width="112" negated="false">
    + <position x="40" y="200"/>
    + <connectionPointOut>
    + <relPosition x="112" y="16"/>
    + </connectionPointOut>
    + <expression>ROW</expression>
    + </inVariable>
    + <inVariable localId="12" executionOrderId="0" height="24" width="112" negated="false">
    + <position x="208" y="224"/>
    + <connectionPointOut>
    + <relPosition x="112" y="16"/>
    + </connectionPointOut>
    + <expression>'","'</expression>
    + </inVariable>
    + <inVariable localId="13" executionOrderId="0" height="32" width="112" negated="false">
    + <position x="40" y="248"/>
    + <connectionPointOut>
    + <relPosition x="112" y="16"/>
    + </connectionPointOut>
    + <expression>COLUMN</expression>
    + </inVariable>
    + <inVariable localId="14" executionOrderId="0" height="24" width="112" negated="false">
    + <position x="208" y="272"/>
    + <connectionPointOut>
    + <relPosition x="112" y="16"/>
    + </connectionPointOut>
    + <expression>'")'</expression>
    + </inVariable>
    + <block localId="16" typeName="NE" executionOrderId="0" height="64" width="64">
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    + <inputVariables>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
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    + <connection refLocalId="22">
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    + <position x="168" y="440"/>
    + </connection>
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    + <variable formalParameter="IN2">
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    + <connection refLocalId="21">
    + <position x="208" y="464"/>
    + <position x="168" y="464"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <block localId="18" typeName="SEL" executionOrderId="0" height="96" width="64">
    + <position x="680" y="376"/>
    + <inputVariables>
    + <variable formalParameter="G">
    + <connectionPointIn>
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    + <connection refLocalId="25">
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    + <position x="624" y="408"/>
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    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN0">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="20">
    + <position x="680" y="432"/>
    + <position x="632" y="432"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
    + <relPosition x="0" y="80"/>
    + <connection refLocalId="4">
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    + </connection>
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    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
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    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <connector name="Code" localId="19" height="24" width="128">
    + <position x="480" y="136"/>
    + <connectionPointIn>
    + <relPosition x="0" y="8"/>
    + <connection refLocalId="7" formalParameter="OUT">
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    + <position x="424" y="144"/>
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    + </connectionPointIn>
    + </connector>
    + <outVariable localId="17" executionOrderId="0" height="32" width="66" negated="false">
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    + <connectionPointIn>
    + <relPosition x="0" y="16"/>
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    + <position x="744" y="408"/>
    + </connection>
    + </connectionPointIn>
    + <expression>OLDCODE</expression>
    + </outVariable>
    + <inVariable localId="20" executionOrderId="0" height="32" width="72" negated="false">
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    + <connectionPointOut>
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    + <expression>OLDCODE</expression>
    + </inVariable>
    + <inVariable localId="21" executionOrderId="0" height="32" width="72" negated="false">
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    + <connectionPointOut>
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    + </connectionPointOut>
    + <expression>OLDCODE</expression>
    + </inVariable>
    + <continuation name="Code" localId="4" height="24" width="128">
    + <position x="504" y="448"/>
    + <connectionPointOut>
    + <relPosition x="128" y="8"/>
    + </connectionPointOut>
    + </continuation>
    + <continuation name="Code" localId="22" height="24" width="128">
    + <position x="40" y="424"/>
    + <connectionPointOut>
    + <relPosition x="128" y="16"/>
    + </connectionPointOut>
    + </continuation>
    + <connector name="CodeChange" localId="23" height="24" width="120">
    + <position x="328" y="432"/>
    + <connectionPointIn>
    + <relPosition x="0" y="8"/>
    + <connection refLocalId="16" formalParameter="OUT">
    + <position x="328" y="440"/>
    + <position x="272" y="440"/>
    + </connection>
    + </connectionPointIn>
    + </connector>
    + <continuation name="CodeChange" localId="25" height="24" width="120">
    + <position x="504" y="392"/>
    + <connectionPointOut>
    + <relPosition x="120" y="16"/>
    + </connectionPointOut>
    + </continuation>
    + <comment localId="26" height="40" width="232">
    + <position x="48" y="40"/>
    + <content>
    + <xhtml:p><![CDATA[Generate python code line]]></xhtml:p>
    + </content>
    + </comment>
    + <comment localId="27" height="48" width="312">
    + <position x="40" y="328"/>
    + <content>
    + <xhtml:p><![CDATA[Detect changes in generated code line]]></xhtml:p>
    + </content>
    + </comment>
    + <comment localId="28" height="48" width="520">
    + <position x="48" y="512"/>
    + <content>
    + <xhtml:p><![CDATA[Execute python code on change or globally when CSV is updated]]></xhtml:p>
    + </content>
    + </comment>
    + <block localId="1" width="104" height="80" typeName="python_eval" instanceName="py_eval" executionOrderId="0">
    + <position x="552" y="600"/>
    + <inputVariables>
    + <variable formalParameter="TRIG">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="15" formalParameter="OUT">
    + <position x="552" y="632"/>
    + <position x="360" y="632"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="CODE">
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    + <relPosition x="0" y="64"/>
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    + <position x="552" y="664"/>
    + <position x="528" y="664"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="ACK">
    + <connectionPointOut>
    + <relPosition x="104" y="32"/>
    + </connectionPointOut>
    + </variable>
    + <variable formalParameter="RESULT">
    + <connectionPointOut>
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    + <position x="32" y="616"/>
    + <connectionPointOut>
    + <relPosition x="152" y="16"/>
    + </connectionPointOut>
    + <expression>pyext_csv_update</expression>
    + </inVariable>
    + <outVariable localId="5" height="24" width="40" executionOrderId="0" negated="false">
    + <position x="1216" y="632"/>
    + <connectionPointIn>
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    + <position x="1216" y="640"/>
    + <position x="1168" y="640"/>
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    + </connectionPointIn>
    + <expression>ACK</expression>
    + </outVariable>
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    + <position x="672" y="664"/>
    + <position x="656" y="664"/>
    + </connection>
    + </connectionPointIn>
    + <expression>RESULT</expression>
    + </outVariable>
    + <continuation name="Code" localId="2" height="24" width="128">
    + <position x="400" y="648"/>
    + <connectionPointOut>
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    + </connectionPointOut>
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    + </connectionPointOut>
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    + </outputVariables>
    + </block>
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    + </FBD>
    + </body>
    + </pou>
    + <pou name="csv_reload" pouType="functionBlock">
    + <interface>
    + <externalVars>
    + <variable name="pyext_csv_update">
    + <type>
    + <BOOL/>
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    + </outputVariables>
    + </block>
    + <continuation name="Code" localId="41" height="24" width="128">
    + <position x="400" y="688"/>
    + <connectionPointOut>
    + <relPosition x="128" y="16"/>
    + </connectionPointOut>
    + </continuation>
    + <inVariable localId="42" height="24" width="152" executionOrderId="0" negated="false">
    + <position x="32" y="656"/>
    + <connectionPointOut>
    + <relPosition x="152" y="16"/>
    + </connectionPointOut>
    + <expression>pyext_csv_update</expression>
    + </inVariable>
    + <outVariable localId="43" height="24" width="40" executionOrderId="0" negated="false">
    + <position x="1216" y="672"/>
    + <connectionPointIn>
    + <relPosition x="0" y="16"/>
    + <connection refLocalId="38" formalParameter="Q1">
    + <position x="1216" y="688"/>
    + <position x="1192" y="688"/>
    + <position x="1192" y="680"/>
    + <position x="1168" y="680"/>
    + </connection>
    + </connectionPointIn>
    + <expression>ACK</expression>
    + </outVariable>
    + <outVariable localId="44" height="24" width="64" executionOrderId="0" negated="false">
    + <position x="688" y="744"/>
    + <connectionPointIn>
    + <relPosition x="0" y="8"/>
    + <connection refLocalId="40" formalParameter="RESULT">
    + <position x="688" y="752"/>
    + <position x="672" y="752"/>
    + <position x="672" y="704"/>
    + <position x="656" y="704"/>
    + </connection>
    + </connectionPointIn>
    + <expression>RESULT</expression>
    + </outVariable>
    + <block localId="15" typeName="OR" executionOrderId="0" height="64" width="64">
    + <position x="296" y="640"/>
    + <inputVariables>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="46" formalParameter="Q">
    + <position x="296" y="672"/>
    + <position x="272" y="672"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN2">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="45">
    + <position x="296" y="696"/>
    + <position x="240" y="696"/>
    + <position x="240" y="704"/>
    + <position x="184" y="704"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <continuation name="CodeChange" localId="45" height="24" width="120">
    + <position x="64" y="688"/>
    + <connectionPointOut>
    + <relPosition x="120" y="16"/>
    + </connectionPointOut>
    + </continuation>
    + <block localId="46" typeName="R_TRIG" instanceName="R_TRIG1" executionOrderId="0" height="48" width="64">
    + <position x="208" y="640"/>
    + <inputVariables>
    + <variable formalParameter="CLK">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="42">
    + <position x="208" y="672"/>
    + <position x="184" y="672"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="Q">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <block localId="33" typeName="LEFT" executionOrderId="0" height="64" width="56">
    + <position x="736" y="672"/>
    + <inputVariables>
    + <variable formalParameter="IN">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="40" formalParameter="RESULT">
    + <position x="736" y="704"/>
    + <position x="656" y="704"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="L">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="35">
    + <position x="736" y="728"/>
    + <position x="724" y="728"/>
    + <position x="724" y="720"/>
    + <position x="712" y="720"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="56" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <block localId="34" typeName="NE" executionOrderId="0" height="64" width="64">
    + <position x="880" y="672"/>
    + <inputVariables>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="33" formalParameter="OUT">
    + <position x="880" y="704"/>
    + <position x="792" y="704"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN2">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="36">
    + <position x="880" y="728"/>
    + <position x="868" y="728"/>
    + <position x="868" y="720"/>
    + <position x="856" y="720"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <inVariable localId="35" executionOrderId="0" height="24" width="24" negated="false">
    + <position x="688" y="712"/>
    + <connectionPointOut>
    + <relPosition x="24" y="8"/>
    + </connectionPointOut>
    + <expression>1</expression>
    + </inVariable>
    + <inVariable localId="36" executionOrderId="0" height="24" width="40" negated="false">
    + <position x="816" y="712"/>
    + <connectionPointOut>
    + <relPosition x="40" y="8"/>
    + </connectionPointOut>
    + <expression>'#'</expression>
    + </inVariable>
    + <block localId="37" typeName="R_TRIG" instanceName="R_TRIG2" executionOrderId="0" height="48" width="64">
    + <position x="880" y="616"/>
    + <inputVariables>
    + <variable formalParameter="CLK">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="40" formalParameter="ACK">
    + <position x="880" y="648"/>
    + <position x="688" y="648"/>
    + <position x="688" y="672"/>
    + <position x="656" y="672"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="Q">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <block localId="38" typeName="SR" instanceName="SR0" executionOrderId="0" height="64" width="48">
    + <position x="1120" y="648"/>
    + <inputVariables>
    + <variable formalParameter="S1">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="39" formalParameter="OUT">
    + <position x="1120" y="680"/>
    + <position x="1056" y="680"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="R" edge="rising">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="15" formalParameter="OUT">
    + <position x="1120" y="704"/>
    + <position x="1088" y="704"/>
    + <position x="1088" y="776"/>
    + <position x="376" y="776"/>
    + <position x="376" y="672"/>
    + <position x="360" y="672"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="Q1">
    + <connectionPointOut>
    + <relPosition x="48" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + <block localId="39" typeName="AND" executionOrderId="0" height="64" width="64">
    + <position x="992" y="648"/>
    + <inputVariables>
    + <variable formalParameter="IN1">
    + <connectionPointIn>
    + <relPosition x="0" y="32"/>
    + <connection refLocalId="37" formalParameter="Q">
    + <position x="992" y="680"/>
    + <position x="976" y="680"/>
    + <position x="976" y="648"/>
    + <position x="944" y="648"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + <variable formalParameter="IN2">
    + <connectionPointIn>
    + <relPosition x="0" y="56"/>
    + <connection refLocalId="34" formalParameter="OUT">
    + <position x="992" y="704"/>
    + <position x="944" y="704"/>
    + </connection>
    + </connectionPointIn>
    + </variable>
    + </inputVariables>
    + <inOutVariables/>
    + <outputVariables>
    + <variable formalParameter="OUT">
    + <connectionPointOut>
    + <relPosition x="64" y="32"/>
    + </connectionPointOut>
    + </variable>
    + </outputVariables>
    + </block>
    + </FBD>
    + </body>
    + </pou>
    <pou name="python_eval" pouType="functionBlock">
    <interface>
    <inputVars>
    @@ -445,6 +2085,19 @@
    </pous>
    </types>
    <instances>
    - <configurations/>
    + <configurations>
    + <configuration name="configuration0">
    + <globalVars>
    + <variable name="pyext_csv_update">
    + <type>
    + <BOOL/>
    + </type>
    + <initialValue>
    + <simpleValue value="TRUE"/>
    + </initialValue>
    + </variable>
    + </globalVars>
    + </configuration>
    + </configurations>
    </instances>
    </project>
    --- a/py_ext/py_ext.py Fri Dec 16 13:41:03 2022 +0100
    +++ b/py_ext/py_ext.py Fri Dec 16 13:43:38 2022 +0100
    @@ -30,6 +30,98 @@
    from py_ext.PythonFileCTNMixin import PythonFileCTNMixin
    import util.paths as paths
    +pyext_python_lib_code = """
    +
    +import csv
    +from collections import OrderedDict
    +
    +csv_int_files = {}
    +def CSVRdInt(fname, rowidx, colidx):
    + \"\"\"
    + Return value at row/column pointed by integer indexes
    + Assumes data starts at first row and first column, no headers.
    + \"\"\"
    + global csv_int_files
    + data = csv_int_files.get(fname, None)
    + if data is None:
    + data = list()
    + try:
    + csvfile = open(fname, 'rb')
    + except IOError:
    + return "#FILE_NOT_FOUND"
    + try:
    + dialect = csv.Sniffer().sniff(csvfile.read(1024))
    + csvfile.seek(0)
    + reader = csv.reader(csvfile, dialect)
    + for row in reader:
    + data.append(row)
    + except csv.Error:
    + return "#CSV_ERROR"
    + finally:
    + csvfile.close()
    + csv_int_files[fname] = data
    +
    + try:
    + row = data[rowidx]
    + except IndexError:
    + return "#ROW_NOT_FOUND"
    +
    + try:
    + return row[colidx]
    + except IndexError:
    + return "#COL_NOT_FOUND"
    +
    +
    +csv_str_files = {}
    +def CSVRdStr(fname, rowname, colname):
    + \"\"\"
    + Return value at row/column pointed by a pair of names as string
    + Assumes first row is column headers and first column is row name.
    + \"\"\"
    + global csv_str_files
    + entry = csv_str_files.get(fname, None)
    + if entry is None:
    + data = dict()
    + try:
    + csvfile = open(fname, 'rb')
    + except IOError:
    + return "#FILE_NOT_FOUND"
    + try:
    + dialect = csv.Sniffer().sniff(csvfile.read(1024))
    + csvfile.seek(0)
    + reader = csv.reader(csvfile, dialect)
    + headers = dict([(name, index) for index, name in enumerate(reader.next()[1:])])
    + for row in reader:
    + data[row[0]] = row[1:]
    + except csv.Error:
    + return "#CSV_ERROR"
    + finally:
    + csvfile.close()
    + csv_str_files[fname] = (headers, data)
    + else:
    + headers, data = entry
    +
    + try:
    + row = data[rowname]
    + except KeyError:
    + return "#ROW_NOT_FOUND"
    +
    + try:
    + colidx = headers[colname]
    + except KeyError:
    + return "#COL_NOT_FOUND"
    +
    + try:
    + return row[colidx]
    + except IndexError:
    + return "#COL_NOT_FOUND"
    +
    +def pyext_csv_reload():
    + global csv_int_files, csv_str_files
    + csv_int_files.clear()
    + csv_str_files.clear()
    +
    +"""
    class PythonLibrary(POULibrary):
    def GetLibraryPath(self):
    @@ -57,7 +149,13 @@
    pythonfile.write(plc_python_code)
    pythonfile.close()
    - return (["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), ""
    + runtimefile_path = os.path.join(buildpath, "runtime_00_pyext.py")
    + runtimefile = open(runtimefile_path, 'w')
    + runtimefile.write(pyext_python_lib_code)
    + runtimefile.close()
    + return ((["py_ext"], [(Gen_Pythonfile_path, IECCFLAGS)], True), "",
    + ("runtime_00_pyext.py", open(runtimefile_path, "rb")))
    +
    class PythonFile(PythonFileCTNMixin):