blendercam/scripts/addons/fabex/post_processors/nclathe_read.py

################################################################################
# nc_read.py
#
# Base class for NC code parsing
#
# Hirutso Enni, 2009-01-13


################################################################################
class Parser:
    def __init__(self):
        self.currentx = 0.0
        self.currenty = 0.0
        self.currentz = 0.0
        self.absolute_flag = True

    ############################################################################
    # Internals

    def files_open(self, name, oname=None):
        if oname == None:
            oname = name + ".nc.xml"
        self.file_in = open(name, "r")
        self.file_out = open(oname, "w")

        self.file_out.write('<?xml version="1.0" ?>\n')
        self.file_out.write("<nccode>\n")

    def files_close(self):
        self.file_out.write("</nccode>\n")

        self.file_in.close()
        self.file_out.close()

    def readline(self):
        self.line = self.file_in.readline().rstrip()
        if len(self.line):
            return True
        else:
            return False

    def write(self, s):
        self.file_out.write(s)

    ############################################################################
    # Xml

    def begin_ncblock(self):
        self.file_out.write("\t<ncblock>\n")

    def end_ncblock(self):
        self.file_out.write("\t</ncblock>\n")

    def add_text(self, s, col=None, cdata=False):
        s.replace("&", "&amp;")
        s.replace('"', "&quot;")
        s.replace("<", "&lt;")
        s.replace(">", "&gt;")
        if cdata:
            (cd1, cd2) = ("<![CDATA[", "]]>")
        else:
            (cd1, cd2) = ("", "")
        if col != None:
            self.file_out.write('\t\t<text col="' + col + '">' + cd1 + s + cd2 + "</text>\n")
        else:
            self.file_out.write("\t\t<text>" + cd1 + s + cd2 + "</text>\n")

    def set_mode(self, units=None):
        self.file_out.write("\t\t<mode")
        if units != None:
            self.file_out.write(' units="' + str(units) + '"')
        self.file_out.write(" />\n")

    def set_tool(self, number=None):
        self.file_out.write("\t\t<tool")
        if number != None:
            self.file_out.write(' number="' + str(number) + '"')
            self.file_out.write(" />\n")

    def begin_path(self, col=None):
        if col != None:
            self.file_out.write('\t\t<path col="' + col + '">\n')
        else:
            self.file_out.write("\t\t<path>\n")

    def end_path(self):
        self.file_out.write("\t\t</path>\n")

    def add_line(self, x=None, y=None, z=None, a=None, b=None, c=None):
        if x == None and y == None and z == None and a == None and b == None and c == None:
            return
        self.file_out.write("\t\t\t<line")
        if x != None:
            if self.absolute_flag:
                self.currentx = x
            else:
                self.currentx = self.currentx + x
            self.file_out.write(' y="%.6f"' % (self.currentx / 2))
        if y != None:
            if self.absolute_flag:
                self.currenty = y
            else:
                self.currenty = self.currenty + y
            # self.file_out.write(' y="%.6f"' % self.currenty)
        if z != None:
            if self.absolute_flag:
                self.currentz = z
            else:
                self.currentz = self.currentz + z
            self.file_out.write(' x="%.6f"' % self.currentz)
        if a != None:
            self.file_out.write(' a="%.6f"' % a)
        if b != None:
            self.file_out.write(' b="%.6f"' % b)
        if c != None:
            self.file_out.write(' c="%.6f"' % c)
        self.file_out.write(" />\n")

    def add_lathe_increment_line(self, u=None, w=None):
        # needed for representing U and W moves in lathe code- these are non modal incremental moves
        # U == X and W == Z
        if u == None and w == None:
            return
        self.file_out.write("\t\t\t<line")
        if u != None:
            self.currentx = self.currentx + u
            self.file_out.write(' y="%.6f"' % (self.currentx / 2))
        if w != None:
            self.currentz = self.currentz + w
            self.file_out.write(' x="%.6f"' % self.currentz)
        self.file_out.write(" />\n")

    def add_arc(self, x=None, y=None, z=None, i=None, j=None, k=None, r=None, d=None):
        if (
            x == None
            and y == None
            and z == None
            and i == None
            and j == None
            and k == None
            and r == None
            and d == None
        ):
            return
        self.file_out.write("\t\t\t<arc")
        if x != None:
            if self.absolute_flag:
                self.currentx = x
            else:
                self.currentx = self.currentx + x
            self.file_out.write(' y="%.6f"' % (self.currentx / 2))
        if y != None:
            if self.absolute_flag:
                self.currenty = y
            else:
                self.currenty = self.currenty + y
            # self.file_out.write(' y="%.6f"' % self.currenty)
        if z != None:
            if self.absolute_flag:
                self.currentz = z
            else:
                self.currentz = self.currentz + z
            self.file_out.write(' x="%.6f"' % self.currentz)

        # if (j != None) : self.file_out.write(' i="%.6f"' % j)
        # if (i != None) : self.file_out.write(' j="%.6f"' % i)
        # if (k != None) : self.file_out.write(' k="%.6f"' % k)

        if k != None:
            self.file_out.write(' i="%.6f"' % k)
        if i != None:
            self.file_out.write(' j="%.6f"' % i)
        if j != None:
            self.file_out.write(' k="%.6f"' % j)

        if r != None:
            self.file_out.write(' r="%.6f"' % r)
        if d != None:
            self.file_out.write(' d="%i"' % d)
        self.file_out.write(" />\n")

    def incremental(self):
        self.absolute_flag = False

    def absolute(self):
        self.absolute_flag = True