225 lines
9.6 KiB
Python
225 lines
9.6 KiB
Python
# barbacompta - invoicing for dummies
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# Copyright (C) 2005-2013 Entr'ouvert
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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import re
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import xml.etree.ElementTree as ET
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import zipfile
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from datetime import date, datetime
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from django.utils.encoding import force_text
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NS = {
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"fo": "urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0",
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"office": "urn:oasis:names:tc:opendocument:xmlns:office:1.0",
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"style": "urn:oasis:names:tc:opendocument:xmlns:style:1.0",
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"number": "urn:oasis:names:tc:opendocument:xmlns:datastyle:1.0",
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"table": "urn:oasis:names:tc:opendocument:xmlns:table:1.0",
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"text": "urn:oasis:names:tc:opendocument:xmlns:text:1.0",
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"xlink": "http://www.w3.org/1999/xlink",
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}
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for prefix, uri in NS.items():
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ET.register_namespace(prefix, uri)
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def is_number(value):
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if isinstance(value, str) and (value.startswith("0") or value.startswith("+")):
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return False
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try:
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float(value)
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except (ValueError, TypeError):
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return False
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return True
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class Workbook:
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def __init__(self):
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self.sheets = []
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def add_sheet(self, name):
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sheet = WorkSheet(self, name)
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self.sheets.append(sheet)
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return sheet
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def get_content_node(self):
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root = ET.Element("{%s}document-content" % NS["office"])
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ET.SubElement(root, "{%s}scripts" % NS["office"])
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ET.SubElement(root, "{%s}font-face-decls" % NS["office"])
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body = ET.SubElement(root, "{%s}body" % NS["office"])
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spreadsheet = ET.SubElement(body, "{%s}spreadsheet" % NS["office"])
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for sheet in self.sheets:
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spreadsheet.append(sheet.get_node())
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return root
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def get_styles_node(self):
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root = ET.Element("{%s}document-styles" % NS["office"])
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ET.SubElement(root, "{%s}font-face-decls" % NS["office"])
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automatic_styles = ET.SubElement(root, "{%s}styles" % NS["office"])
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style = ET.SubElement(automatic_styles, "{%s}style" % NS["style"])
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style.attrib["{%s}name" % NS["style"]] = "Default"
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def define_number_style():
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node = ET.SubElement(automatic_styles, '{%s}number-style' % NS['number'])
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node.attrib["{%s}name" % NS["style"]] = "NumberFormat"
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sub_node = ET.SubElement(node, '{%s}number' % NS['number'])
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sub_node.attrib['{%s}decimal-places' % NS['number']] = '2'
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sub_node.attrib['{%s}min-decimal-places' % NS['number']] = '2'
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sub_node.attrib['{%s}min-integer-digits' % NS['number']] = '1'
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sub_node.attrib['{%s}grouping' % NS['number']] = 'true'
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style = ET.SubElement(automatic_styles, "{%s}style" % NS["style"])
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style.attrib["{%s}name" % NS["style"]] = 'Number'
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style.attrib["{%s}family" % NS["style"]] = "table-cell"
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style.attrib["{%s}data-style-name" % NS["style"]] = "NumberFormat"
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style.attrib["{%s}parent-style" % NS["style"]] = "Default"
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define_number_style()
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def define_date_style(name, strftime_string):
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node = ET.SubElement(automatic_styles, "{%s}date-style" % NS["number"])
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node.attrib["{%s}name" % NS["style"]] = name + "NumberFormat"
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for part in re.findall(r"%?.", strftime_string):
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if part == "%Y":
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ET.SubElement(node, "{%s}year" % NS["number"]).attrib["{%s}style" % NS["number"]] = "long"
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elif part == "%m":
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ET.SubElement(node, "{%s}month" % NS["number"]).attrib[
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"{%s}style" % NS["number"]
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] = "long"
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elif part == "%d":
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ET.SubElement(node, "{%s}day" % NS["number"]).attrib["{%s}style" % NS["number"]] = "long"
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elif part == "%H":
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ET.SubElement(node, "{%s}hours" % NS["number"]).attrib[
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"{%s}style" % NS["number"]
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] = "long"
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elif part == "%M":
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ET.SubElement(node, "{%s}minutes" % NS["number"]).attrib[
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"{%s}style" % NS["number"]
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] = "long"
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elif part == "%S":
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ET.SubElement(node, "{%s}seconds" % NS["number"]).attrib[
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"{%s}style" % NS["number"]
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] = "long"
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else:
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ET.SubElement(node, "{%s}text" % NS["number"]).text = part
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style = ET.SubElement(automatic_styles, "{%s}style" % NS["style"])
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style.attrib["{%s}name" % NS["style"]] = name
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style.attrib["{%s}family" % NS["style"]] = "table-cell"
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style.attrib["{%s}data-style-name" % NS["style"]] = name + "NumberFormat"
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style.attrib["{%s}parent-style" % NS["style"]] = "Default"
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style = ET.SubElement(automatic_styles, "{%s}style" % NS["style"])
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style.attrib["{%s}name" % NS["style"]] = name + "Column"
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style.attrib["{%s}family" % NS["style"]] = "table-column"
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ET.SubElement(style, "{%s}table-column-properties" % NS["style"]).attrib[
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"{%s}column-width" % NS["style"]
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] = "80mm"
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define_date_style("Date", '%d/%m/%Y')
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define_date_style("DateTime", '%d/%m/%Y %H:%M')
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return root
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def get_styles(self):
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return ET.tostring(self.get_styles_node(), "utf-8")
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def get_content(self):
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return ET.tostring(self.get_content_node(), "utf-8")
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def save(self, output):
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z = zipfile.ZipFile(output, "w")
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z.writestr("content.xml", self.get_content())
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z.writestr("styles.xml", self.get_styles())
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z.writestr("mimetype", "application/vnd.oasis.opendocument.spreadsheet")
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z.writestr(
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"META-INF/manifest.xml",
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"""<?xml version="1.0" encoding="UTF-8"?>
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<manifest:manifest xmlns:manifest="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0">
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<manifest:file-entry manifest:full-path="/" manifest:media-type="application/vnd.oasis.opendocument.spreadsheet"/>
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<manifest:file-entry manifest:full-path="styles.xml" manifest:media-type="text/xml"/>
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<manifest:file-entry manifest:full-path="content.xml" manifest:media-type="text/xml"/>
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<manifest:file-entry manifest:full-path="META-INF/manifest.xml" manifest:media-type="text/xml"/>
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<manifest:file-entry manifest:full-path="mimetype" manifest:media-type="text/plain"/>
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</manifest:manifest>""",
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)
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z.close()
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class WorkSheet:
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def __init__(self, workbook, name):
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self.cells = {}
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self.name = name
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self.workbook = workbook
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def write(self, row, column, value, **kwargs):
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if row not in self.cells:
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self.cells[row] = {}
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self.cells[row][column] = WorkCell(self, value, **kwargs)
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def get_node(self):
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root = ET.Element("{%s}table" % NS["table"])
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root.attrib["{%s}name" % NS["table"]] = self.name
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ET.SubElement(root, "{%s}table-column" % NS["table"])
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for i in range(0, max(self.cells.keys()) + 1):
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row = ET.SubElement(root, "{%s}table-row" % NS["table"])
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for j in range(0, max(self.cells.get(i).keys()) + 1):
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cell = self.cells.get(i, {}).get(j, None)
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if not cell:
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ET.SubElement(row, "{%s}table-cell" % NS["table"])
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else:
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row.append(cell.get_node())
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return root
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class WorkCell:
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def __init__(self, worksheet, value):
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if value is None:
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value = ""
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self.worksheet = worksheet
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self.native_value = value
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value = force_text(value)
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for i in range(0x20): # remove control characters
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char = chr(i)
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if char in ("\t", "\r", "\n"):
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# only allow tab, carriage return and line feed.
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continue
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value = value.replace(char, "")
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# fffe and ffff are also invalid characters
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value = value.replace("\ufffe", "").replace("\uffff", "")
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self.value = value
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def get_node(self):
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root = ET.Element("{%s}table-cell" % NS["table"])
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p = ET.SubElement(root, "{%s}p" % NS["text"])
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p.text = self.value
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value = self.native_value
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if is_number(value):
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root.attrib["{%s}value-type" % NS["office"]] = "float"
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root.attrib["{%s}value" % NS["office"]] = self.value
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root.attrib["{%s}style-name" % NS["table"]] = "Number"
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elif isinstance(value, datetime):
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root.attrib["{%s}style-name" % NS["table"]] = "DateTime"
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root.attrib["{%s}value-type" % NS["office"]] = "date"
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root.attrib["{%s}date-value" % NS["office"]] = value.strftime("%Y-%m-%dT%H:%M:%S")
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p.text = value.strftime("%d/%m/%Y %H:%M:%S")
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elif isinstance(value, date):
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root.attrib["{%s}style-name" % NS["table"]] = "Date"
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root.attrib["{%s}value-type" % NS["office"]] = "date"
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root.attrib["{%s}date-value" % NS["office"]] = value.strftime("%Y-%m-%d")
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p.text = value.strftime("%d/%m/%Y")
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else:
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root.attrib["{%s}value-type" % NS["office"]] = "string"
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return root
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