commit Brian's BOM generation scripts so they don't get lost

TODO.txt

@@ -19,6 +19,11 @@ Common
 * Push file open semantics down to one of the base frame classes ( likely candidate is
   WinEDA_BasicFrame ) so that file open behavior is consistent across all applications.
 
+* Look over Brian's python BOM generation scripts, which are now in
+  scripts/python/ky and sort them out, and get something into the installation as well.
+  Code came from Brian in this posting's attachment, which is ky2.zip:
+  https://lists.launchpad.net/kicad-developers/msg06763.html
+  but is now in scripts/python/ky temporarily.
 
 
 CvPCB
@@ -48,6 +53,4 @@ E6)  Start initial work for changing component library file format to use Dick's
 PCBNew
 ------
 
-Dick:
 
-*   Use BOARD_ITEM::MenuIcon() in the onrightclick.cpp

scripts/bom-in-python/ky/bom_example1.py

@@ -0,0 +1,38 @@
+#
+# Example python script to generate a BOM from a KiCad generic netlist
+#
+# Example: Tab delimited list (The same as std output) Ungrouped
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import csv
+import sys
+
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+# Create a new csv writer object to use as the output formatter, although we
+# are created a tab delimited list instead!
+out = csv.writer(f, delimiter='\t', quoting=csv.QUOTE_NONE)
+
+# Output a field delimited header line
+out.writerow(['Source:', net.getSource()])
+out.writerow(['Date:', net.getDate()])
+out.writerow(['Tool:', net.getTool()])
+out.writerow(['Component Count:', len(net.components)])         
+out.writerow(['Ref', 'Value', 'Part', 'Documentation', 'Description', 'Vendor'])
+
+# Output all of the component information
+for c in net.components:
+    out.writerow([c.getRef(), c.getValue(), c.getLib() + "/" + c.getPart(), 
+        c.getDatasheet(), c.getDescription(), c.getField("Vendor")])

scripts/bom-in-python/ky/bom_example2.py

@@ -0,0 +1,38 @@
+#
+# Example python script to generate a BOM from a KiCad generic netlist
+#
+# Example: Ungrouped (One component per row) CSV output
+#
+
+# Import the KiCad python helper module
+import ky
+import csv
+import sys
+ 
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead 
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+# Create a new csv writer object to use as the output formatter
+out = csv.writer(f, delimiter=',', quotechar="\"", quoting=csv.QUOTE_ALL)
+
+# Output a field delimited header line
+out.writerow(['Source:', net.getSource()])
+out.writerow(['Date:', net.getDate()])
+out.writerow(['Tool:', net.getTool()])
+out.writerow(['Component Count:', len(net.components)])         
+out.writerow(['Ref', 'Value', 'Footprint', 'Datasheet', 'Manufacturer', 'Vendor'])
+
+# Output all of the component information (One component per row)
+for c in net.components:
+    out.writerow([c.getRef(), c.getValue(), c.getFootprint(), c.getDatasheet(),
+        c.getField("Manufacturer"), c.getField("Vendor")])
+

scripts/bom-in-python/ky/bom_example3.py

@@ -0,0 +1,51 @@
+#
+# Example python script to generate a BOM from a KiCad generic netlist
+#
+# Example: Sorted and Grouped CSV BOM
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import csv
+import sys
+
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+# Create a new csv writer object to use as the output formatter
+out = csv.writer(f, delimiter=',', quotechar='\"', quoting=csv.QUOTE_ALL)
+
+# Output a set of rows for a header providing general information
+out.writerow(['Source:', net.getSource()])
+out.writerow(['Date:', net.getDate()])
+out.writerow(['Tool:', net.getTool()])
+out.writerow(['Component Count:', len(net.components)])         
+out.writerow(['Ref', 'Qnty', 'Value', 'Part', 'Datasheet', 'Description', 'Vendor'])
+
+# Get all of the components in groups of matching parts + values (see ky.py)
+grouped = net.groupComponents()
+
+# Output all of the component information
+for group in grouped:
+    refs = ""
+
+    # Add the reference of every component in the group and keep a reference 
+    # to the component so that the other data can be filled in once per group
+    for component in group:
+        refs += component.getRef() + ", "
+        c = component
+
+    # Fill in the component groups common data
+    out.writerow([refs, len(group), c.getValue(), c.getLib() + "/" + c.getPart(), c.getDatasheet(),
+        c.getDescription(), c.getField("Vendor")])
+
+

scripts/bom-in-python/ky/bom_example4.py

@@ -0,0 +1,78 @@
+#
+# Example python script to generate a BOM from a KiCad generic netlist
+#
+# Example: Sorted and Grouped HTML BOM
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import sys
+
+# Start with a basic html template
+html = """
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+    <head>
+        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    </head>
+    <body>
+    <h1><!--SOURCE--></h1>
+    <p><!--DATE--></p>
+    <p><!--TOOL--></p>
+    <p><!--COMPCOUNT--></p>
+    <table>
+    <!--TABLEROW-->
+    </table>
+    </body>
+</html>
+    """
+ 
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+# Output a set of rows for a header providing general information
+html = html.replace('<!--SOURCE-->', net.getSource())
+html = html.replace('<!--DATE-->', net.getDate())
+html = html.replace('<!--TOOL-->', net.getTool())
+html = html.replace('<!--COMPCOUNT-->', "<b>Component Count:</b>" + \
+    str(len(net.components)))
+
+row = "<tr><th style='width:640px'>Ref</th>" + "<th>Qnty</th>" 
+row += "<th>Value</th>" + "<th>Part</th>" + "<th>Datasheet</th>"
+row += "<th>Description</th>" + "<th>Vendor</th></tr>"
+ 
+html = html.replace('<!--TABLEROW-->', row + "<!--TABLEROW-->")
+
+# Get all of the components in groups of matching parts + values (see ky.py)
+grouped = net.groupComponents()
+
+# Output all of the component information
+for group in grouped:
+    refs = ""
+
+    # Add the reference of every component in the group and keep a reference 
+    # to the component so that the other data can be filled in once per group
+    for component in group:
+        refs += component.getRef() + ", "
+        c = component
+
+    row = "<tr><td>" + refs +"</td><td>" + str(len(group)) 
+    row += "</td><td>" + c.getValue() + "</td><td>" + c.getLib() + "/"  
+    row += c.getPart() + "</td><td>" + c.getDatasheet() + "</td><td>" 
+    row += c.getDescription() + "</td><td>" + c.getField("Vendor") 
+    row += "</td></tr>"
+ 
+    html = html.replace('<!--TABLEROW-->', row + "<!--TABLEROW-->")
+
+# Print the formatted html to the file
+print >> f, html

scripts/bom-in-python/ky/bom_example5.py

@@ -0,0 +1,113 @@
+#
+# Example python script to generate a BOM from a KiCad generic netlist
+#
+# Example: Sorted and Grouped HTML BOM with more advanced grouping
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import sys
+
+# Start with a basic html template
+html = """
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+    <head>
+        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+        <title>KiCad BOM Example 5</title>
+    </head>
+    <body>
+    <h1><!--SOURCE--></h1>
+    <p><!--DATE--></p>
+    <p><!--TOOL--></p>
+    <p><!--COMPCOUNT--></p>
+    <table>
+    <!--TABLEROW-->
+    </table>
+    </body>
+</html>
+    """
+
+def myEqu(self, other):
+    """myEqu is a more advanced equivalence function for components which is 
+    used by component grouping. Normal operation is to group components based
+    on their Value, Library source, and Library part.
+    
+    In this example of a more advanced equivalency operator we also compare the 
+    custom fields Voltage, Tolerance and Manufacturer as well as the assigned
+    footprint. If these fields are not used in some parts they will simply be 
+    ignored (they will match as both will be empty strings).
+
+    """
+    result = True
+    if self.getValue() != other.getValue():
+        result = False
+    elif self.getLib() != other.getLib():
+        result = False
+    elif self.getPart() != other.getPart():
+        result = False
+    elif self.getFootprint() != other.getFootprint():
+        result = False
+    elif self.getField("Tolerance") != other.getField("Tolerance"):
+        result = False
+    elif self.getField("Manufacturer") != other.getField("Manufacturer"):
+        result = False
+    elif self.getField("Voltage") != other.getField("Voltage"):
+        result = False             
+            
+    return result
+
+# Override the component equivalence operator - it is important to do this
+# before loading the netlist, otherwise all components will have the original
+# equivalency operator.
+ky.component.__equ__ = myEqu
+ 
+# Generate an instance of a generic netlist, and load the netlist tree from
+# video.tmp. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write too, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+# Output a set of rows for a header providing general information
+html = html.replace('<!--SOURCE-->', net.getSource())
+html = html.replace('<!--DATE-->', net.getDate())
+html = html.replace('<!--TOOL-->', net.getTool())
+html = html.replace('<!--COMPCOUNT-->', "<b>Component Count:</b>" + \
+    str(len(net.components)))
+
+row  = "<tr><th style='width:640px'>Ref</th>" + "<th>Qnty</th>" 
+row += "<th>Value</th>" + "<th>Part</th>" + "<th>Datasheet</th>"
+row += "<th>Description</th>" + "<th>Vendor</th></tr>"
+ 
+html = html.replace('<!--TABLEROW-->', row + "<!--TABLEROW-->")
+
+# Get all of the components in groups of matching parts + values (see ky.py)
+grouped = net.groupComponents()
+
+# Output all of the component information
+for group in grouped:
+    refs = ""
+
+    # Add the reference of every component in the group and keep a reference 
+    # to the component so that the other data can be filled in once per group
+    for component in group:
+        refs += component.getRef() + ", "
+        c = component
+
+    row = "<tr><td>" + refs +"</td><td>" + str(len(group)) 
+    row += "</td><td>" + c.getValue() + "</td><td>" + c.getLib() + "/"  
+    row += c.getPart() + "</td><td>" + c.getDatasheet() + "</td><td>" 
+    row += c.getDescription() + "</td><td>" + c.getField("Vendor") 
+    row += "</td></tr>"
+ 
+    html = html.replace('<!--TABLEROW-->', row + "<!--TABLEROW-->")
+
+# Print the formatted html to output file
+print >> f, html

scripts/bom-in-python/ky/ky.py

@@ -0,0 +1,450 @@
+#
+# KiCad python module for interpreting generic netlists which can be used
+# to generate Bills of materials, etc.
+#
+# No string formatting is used on purpose as the only string formatting that
+# is current compatible with python 2.4+ to 3.0+ is the '%' method, and that
+# is due to be deprecated in 3.0+ soon
+#
+
+import sys
+import xml.sax as sax
+
+
+class component():
+    """Class for a set of component information"""
+    def __init__(self, element):
+        self.element = element      
+        self.libpart = None
+        
+        # Set to true when this component is included in a component group
+        self.grouped = False
+    
+    def __eq__(self, other):
+        """Equlivalency operator, remember this can be easily overloaded"""
+        result = False
+        if self.getValue() == other.getValue():
+            if self.getLib() == other.getLib():
+                if self.getPart() == other.getPart():
+                    result = True
+        return result
+
+    def setPart(self, part):
+        self.libpart = part
+
+    def setValue(self, value):
+        """Set the value of this component"""
+        v = self.element.getChild("value")
+        if v:
+            v.setChars(value)
+        
+    def getValue(self):
+        return self.element.get("value")
+
+    def getRef(self):
+        return self.element.get("comp", "ref")
+
+    def getFootprint(self):
+        return self.element.get("footprint")        
+
+    def getDatasheet(self):
+        return self.element.get("datasheet")
+
+    def getLib(self):
+        return self.element.get("libsource", "lib")
+        
+    def getPart(self):
+        return self.element.get("libsource", "part") 
+    
+    def getTimestamp(self):
+        return self.element.get("tstamp")
+        
+    def getDescription(self):
+        # When attempting to access the part, we must take care in case the part
+        # cannot be found in the netlist
+        try:
+            d = self.libpart.getDescription()
+        except AttributeError:
+            d = ""
+        return d
+
+    def getDatasheet(self):
+        # When attempting to access the part, we must take care in case the part
+        # cannot be found in the netlist
+        try:
+            d = self.libpart.getDatasheet()
+        except AttributeError:
+            d = ""
+        return d
+    
+    def getField(self, name):
+        """Return the value of a field named name. The component is first 
+        checked for the field, and then the components library part is checked
+        for the field. If the field doesn't exist in either, an empty string is
+        returned
+        
+        Keywords:
+        name -- The name of the field to return the value for
+        
+        """
+        field = self.element.get("field", "name", name)
+        if field == "":
+            try:
+                field = self.libpart.getField(name)
+            except AttributeError:
+                field = ""
+        return field
+
+
+class netlistElement():
+    """Generic netlist element. All elements for a netlist tree which can be 
+    used to easily generate various output formats by propogating format
+    requests to all children
+    """
+    def __init__(self, name, parent=None):
+        self.name = name
+        self.attributes = {}
+        self.parent = parent
+        self.chars = ""
+        self.children = []
+        self.indent = ""
+            
+    def __str__(self):
+        """String representation of this netlist element
+        
+        """
+        return (self.name + "[" + self.chars + "]" + " attr:" + 
+            str(len(self.attributes[a])))            
+    
+    def formatXML(self, amChild=False):
+        """Return this element formatted as XML
+        
+        Keywords:
+        amChild -- If set to True, the start of document is not returned
+        
+        """
+        s = ""
+
+        if not amChild:
+            s = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" 
+        
+        s += self.indent + "<" + self.name
+        for a in self.attributes:
+            s += " " + a + "=\"" + self.attributes[a] + "\""
+
+        if (len(self.chars) == 0) and (len(self.children) == 0):
+            s += "/>"
+        else:
+            s += ">" + self.chars                                                        
+        
+        for c in self.children:
+            c.indent += self.indent + "    "
+            s += "\n"
+            s += c.formatXML(True)
+                    
+        if (len(self.children) > 0):
+            s += "\n" + self.indent        
+         
+        if (len(self.children) > 0) or (len(self.chars) > 0): 
+            s += "</" + self.name + ">"        
+                  
+        return s
+
+    def formatHTML(self, amChild=False):
+        """Return this element formatted as HTML
+        
+        Keywords:
+        amChild -- If set to True, the start of document is not returned
+        
+        """
+        s = ""
+
+        if not amChild:
+            s = """<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+                "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+                <html xmlns="http://www.w3.org/1999/xhtml">
+                <head>
+                <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+                <title></title>
+                </head>
+                <body>
+                <table>
+                """ 
+
+        s += "<tr><td><b>" + self.name + "</b><br>" + self.chars + "</td><td><ul>"
+        for a in self.attributes:
+            s += "<li>" + a + " = " + self.attributes[a] + "</li>"
+
+        s += "</ul></td></tr>\n"
+                                                                
+        for c in self.children:
+            s += c.formatHTML(True)        
+         
+        if not amChild:
+            s += """</table>
+                </body>
+                </html>"""        
+                  
+        return s    
+                     
+    def addAttribute(self, attr, value):
+        """Add an attribute to this element"""
+        self.attributes[attr] = value
+
+    def setChars(self, chars):
+        """Set the characters for this element"""
+        self.chars = chars
+                
+    def addChars(self, chars):
+        """Add characters (textual value) to this element"""
+        self.chars += chars
+    
+    def addChild(self, child):
+        """Add a child element to this element"""
+        self.children.append(child)
+        return self.children[len(self.children) - 1]
+        
+    def getParent(self):
+        """Get the parent of this element (Could be None)"""
+        return self.parent
+
+    def setAttribute(self, attr, value):
+        """Set an attributes value - in fact does the same thing as add 
+        attribute
+        
+        """
+        self.attributes[attr] = value
+    
+    def getChild(self, name):
+        """Returns a child element of name
+        
+        Keywords:
+        name -- The name of the child element to return"""
+        for child in self.children:
+            if child.name == name:
+                return child
+    
+        return None
+                    
+    def get(self, element, attribute="", attrmatch=""):
+        """Return the data for either an attribute, or else an element"""
+        if (self.name == element):
+            if attribute != "":
+                if attrmatch != "": 
+                    if self.attributes[attribute] == attrmatch:
+                        return self.chars                
+                else:
+                    return self.attributes[attribute]
+            else:
+                return self.chars
+        
+        for child in self.children:
+            if child.get(element, attribute, attrmatch) != "":
+                return child.get(element, attribute, attrmatch) 
+        
+        return ""         
+
+
+class netlist():
+    """ Kicad generic netlist class. Generally loaded from a kicad generic 
+    netlist file. Includes several helper functions to ease BOM creating 
+    scripts
+     
+    """
+    def __init__(self, fname=""):
+        """Initialiser for the genericNetlist class
+        
+        Keywords:
+        fname -- The name of the generic netlist file to open (Optional)
+        
+        """
+        self.design = None
+        self.components = []
+        self.libparts = []
+        self.libraries = []
+        self.nets = []
+        
+        # The entire tree is loaded into self.tree
+        self.tree = []
+
+        self._curr_element = None
+       
+        if fname != "":             
+            self.load(fname)
+        
+    def addChars(self, content):
+        """Add characters to the current element"""
+        self._curr_element.addChars(content) 
+
+    def addElement(self, name):
+        """Add a new kicad generic element to the list"""
+        if self._curr_element == None:
+            self.tree = netlistElement(name)
+            self._curr_element = self.tree             
+        else:
+            self._curr_element = self._curr_element.addChild( 
+                netlistElement(name, self._curr_element))
+
+        # If this element is a component, add it to the components list 
+        if self._curr_element.name == "comp":
+            self.components.append(component(self._curr_element))
+
+        # Assign the design element
+        if self._curr_element.name == "design":
+            self.design = self._curr_element
+
+        # If this element is a library part, add it to the parts list
+        if self._curr_element.name == "libpart":
+            self.libparts.append(part(self._curr_element))
+
+        # If this element is a net, add it to the nets list
+        if self._curr_element.name = "net"
+            self.nets.append(self._curr_element)
+        
+        # If this element is a library, add it to the libraries list
+        if self._curr_element.name = "library"
+            self.libraries.append(self._curr_element)
+                
+        return self._curr_element        
+
+    def endDocument(self):
+        """Called when the netlist document has been fully parsed"""
+        # When the document is complete, the library parts must be linked to
+        # the components as they are seperate in the tree so as not to
+        # duplicate library part information for every component
+        for c in self.components:
+            for p in self.libparts:
+                if p.getPart() == c.getPart() and p.getLib() == c.getLib():
+                    c.setPart(p)
+
+    def endElement(self):
+        """End the current element and switch to its parent"""
+        self._curr_element = self._curr_element.getParent()
+
+    def getDate(self):
+        """Return the date + time string generated by the tree creation tool"""
+        return self.design.get("date")
+
+    def getSource(self):
+        """Return the source string for the design"""
+        return self.design.get("source")
+    
+    def getTool(self):
+        """Return the tool string which was used to create the netlist tree"""
+        return self.design.get("tool")
+
+    def groupComponents(self):
+        """Return a list of component lists. Components are grouped together
+        when the value, library and part identifiers match
+        
+        """
+        groups = []
+
+        # Make sure to start off will all components ungrouped to begin with        
+        for c in self.components:
+            c.grouped = False
+
+        # Group components based on the value, library and part identifiers
+        for c in self.components:
+            if c.grouped == False:
+                c.grouped = True
+                newgroup = []
+                newgroup.append(c)
+                
+                # Check every other ungrouped component against this component
+                # and add to the group as necessary                
+                for ci in self.components:                
+                    if ci.grouped == False and ci == c:
+                        newgroup.append(ci)
+                        ci.grouped = True
+                
+                # Add the new component group to the groups list                
+                groups.append(newgroup)
+        
+        # Each group is a list of components, we need to sort each list first
+        # to get them in order as this makes for easier to read BOM's
+        for g in groups:
+            g = sorted(g, key=lambda g: g.getRef())
+            
+        # Finally, sort the groups to order the references alphabetically
+        groups = sorted(groups, key=lambda group: group[0].getRef())
+                
+        return groups
+    
+    def formatXML(self):
+        """Return the whole netlist formatted in XML"""
+        return self.tree.formatXML()
+
+    def formatHTML(self):
+        """Return the whole netlist formatted in HTML"""
+        return self.tree.formatHTML()
+                                     
+    def load(self, fname):
+        """Load a kicad generic netlist
+        
+        Keywords:
+        fname -- The name of the generic netlist file to open 
+        
+        """
+        try:
+            self._reader = sax.make_parser()
+            self._reader.setContentHandler(_gNetReader(self))
+            self._reader.parse(fname)
+        except IOError as e:
+            print >> sys.stderr, __file__, ":", e
+            sys.exit(-1)    
+
+
+class part():
+    """Class for a library part"""
+    def __init__(self, part):
+        # The part is a reference to a libpart generic netlist element
+        self.element = part
+    
+    def __str__(self):
+        # simply print the generic netlist element associated with this part
+        return str(self.element)
+        
+    def getDatasheet(self):
+        return self.element.get("docs")
+
+    def getLib(self):
+        return self.element.get("libpart", "lib")
+    
+    def getPart(self):
+        return self.element.get("libpart", "part")
+
+    def getDescription(self):
+        return self.element.get("description")
+                
+    def getField(self, name):
+        return self.element.get("field", "name", name)
+
+
+class _gNetReader(sax.handler.ContentHandler):
+    """SAX kicad generic netlist content handler - passes most of the work back
+    to the gNetlist class which builds a complete tree in RAM for the design
+    
+    """
+    def __init__(self, aParent):
+        self.parent = aParent
+    
+    def startElement(self, name, attrs):
+        """Start of a new XML element event"""
+        element = self.parent.addElement(name)
+        
+        for name in attrs.getNames():
+            element.addAttribute(name, attrs.getValue(name))
+        
+    def endElement(self, name):
+        self.parent.endElement()
+    
+    def characters(self, content):
+        # Ignore erroneous white space - ignoreableWhitespace does not get rid
+        # of the need for this!
+        if not content.isspace():
+            self.parent.addChars(content)
+            
+    def endDocument(self):
+        """End of the XML document event"""
+        self.parent.endDocument()

scripts/bom-in-python/ky/round_robin.py

@@ -0,0 +1,23 @@
+#
+# Example python script to generate an equivalent XML document from XML input
+#
+# Example: Round robin, XML to XML conversion
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import sys
+
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+print >> f, net.formatXML()

scripts/bom-in-python/ky/round_value_robin.py

@@ -0,0 +1,71 @@
+#
+# Example python script to generate an equivalent XML document from XML input
+#
+# Example: Round value robin, XML to XML conversion with partial value monging
+#
+
+# Import the KiCad python helper module and the csv formatter
+import ky
+import sys
+
+def checkvalue(self):
+    """Check values, and replace with preferred/consistent values"""
+    ref = self.getRef()
+    r = ref.split("R")
+    c = ref.split("C")
+    v = self.getValue()
+
+    # Common to all values - convert decimation if necessary
+    dec = v.split(",")
+    if (len(dec) == 2):
+        newval = dec[0] + "." + dec[1]
+        self.setValue(newval)
+        v = self.getValue()
+                
+    if len(r) == 2 and r[1].isdigit():
+        # This is a resistor - make values consistent
+        # If the value is a pure value, add R to the end of the value
+        if v.isdigit():
+            i = int(v)
+            if (i > 1000000):
+                i = i / 100000
+                v = str(i) + "M"
+            if (i > 1000):
+                i = i / 1000
+                v = str(i) + "K"
+            else:
+                v = str(i) + "R"        
+            
+            self.setValue(v)
+        else:
+            # Get the multiplier character
+            multiplier = v[len(v) - 1]
+            v = v.strip(multiplier)
+            v = v.split(".")
+            if (len(v) == 2):
+                newval = v[0] + multiplier + v[1]
+                self.setValue(newval)
+                v = self.getValue()                        
+            
+    
+
+# Give components a new method for checking the values (this could easily be a
+# Company Part Number generator method instead)
+ky.component.checkvalue = checkvalue
+    
+# Generate an instance of a generic netlist, and load the netlist tree from
+# the command line option. If the file doesn't exist, execution will stop
+net = ky.netlist(sys.argv[1])
+
+# Open a file to write to, if the file cannot be opened output to stdout
+# instead
+try:
+    f = open(sys.argv[2], 'w')
+except IOError:
+    print >> sys.stderr, __file__, ":", e
+    f = stdout
+
+for c in net.components:
+    c.checkvalue()
+    
+print >> f, net.formatXML()