add ods package from w.c.s.

bijoe/ods.py

@@ -0,0 +1,117 @@
+# -*- coding: utf-8 -*-
+#
+# w.c.s. - web application for online forms
+# Copyright (C) 2005-2013  Entr'ouvert
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+import zipfile
+import xml.etree.ElementTree as ET
+
+OFFICE_NS = 'urn:oasis:names:tc:opendocument:xmlns:office:1.0'
+TABLE_NS = 'urn:oasis:names:tc:opendocument:xmlns:table:1.0'
+TEXT_NS = 'urn:oasis:names:tc:opendocument:xmlns:text:1.0'
+XLINK_NS = 'http://www.w3.org/1999/xlink'
+
+
+class Workbook(object):
+    def __init__(self, encoding='utf-8'):
+        self.sheets = []
+        self.encoding = encoding
+
+    def add_sheet(self, name):
+        sheet = WorkSheet(self, name)
+        self.sheets.append(sheet)
+        return sheet
+
+    def get_node(self):
+        root = ET.Element('{%s}document-content' % OFFICE_NS)
+        ET.SubElement(root, '{%s}scripts' % OFFICE_NS)
+        ET.SubElement(root, '{%s}font-face-decls' % OFFICE_NS)
+        body = ET.SubElement(root, '{%s}body' % OFFICE_NS)
+        spreadsheet = ET.SubElement(body, '{%s}spreadsheet' % OFFICE_NS)
+        for sheet in self.sheets:
+            spreadsheet.append(sheet.get_node())
+        return root
+
+    def get_data(self):
+        return ET.tostring(self.get_node(), 'utf-8')
+
+    def save(self, output):
+        z = zipfile.ZipFile(output, 'w')
+        z.writestr('content.xml', self.get_data())
+        z.writestr('mimetype', 'application/vnd.oasis.opendocument.spreadsheet')
+        z.writestr('META-INF/manifest.xml', '''<?xml version="1.0" encoding="UTF-8"?>
+<manifest:manifest xmlns:manifest="urn:oasis:names:tc:opendocument:xmlns:manifest:1.0">
+ <manifest:file-entry manifest:full-path="/" manifest:media-type="application/vnd.oasis.opendocument.spreadsheet"/>
+ <manifest:file-entry manifest:full-path="styles.xml" manifest:media-type="text/xml"/>
+ <manifest:file-entry manifest:full-path="content.xml" manifest:media-type="text/xml"/>
+ <manifest:file-entry manifest:full-path="META-INF/manifest.xml" manifest:media-type="text/xml"/>
+ <manifest:file-entry manifest:full-path="mimetype" manifest:media-type="text/plain"/>
+</manifest:manifest>''')
+        z.writestr('styles.xml', '''<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<office:document-styles xmlns:office="urn:oasis:names:tc:opendocument:xmlns:office:1.0">
+</office:document-styles>''')
+        z.close()
+
+
+class WorkSheet(object):
+    def __init__(self, workbook, name):
+        self.cells = {}
+        self.name = name
+        self.workbook = workbook
+
+    def write(self, row, column, value, hint=None):
+        if not row in self.cells:
+            self.cells[row] = {}
+        self.cells[row][column] = WorkCell(self, value, hint=hint)
+
+    def get_node(self):
+        root = ET.Element('{%s}table' % TABLE_NS)
+        root.attrib['{%s}name' % TABLE_NS] = self.name
+        ET.SubElement(root, '{%s}table-column' % TABLE_NS)
+        for i in range(0, max(self.cells.keys())+1):
+            row = ET.SubElement(root, '{%s}table-row' % TABLE_NS)
+            for j in range(0, max(self.cells.get(i).keys())+1):
+                cell = self.cells.get(i, {}).get(j, None)
+                if not cell:
+                    ET.SubElement(row, '{%s}table-cell' % TABLE_NS)
+                else:
+                    row.append(cell.get_node())
+        return root
+
+
+class WorkCell(object):
+    def __init__(self, worksheet, value, hint=None):
+        if value is None:
+            value = ''
+        if type(value) is not unicode:
+            value = unicode(value, 'utf-8')
+        self.value = value
+        self.worksheet = worksheet
+        self.hint = hint
+
+    def get_node(self):
+        root = ET.Element('{%s}table-cell' % TABLE_NS)
+        root.attrib['{%s}value-type' % OFFICE_NS] = 'string'
+        p = ET.SubElement(root, '{%s}p' % TEXT_NS)
+        if self.hint == 'uri':
+            base_filename = self.value.split('/')[-1]
+            if base_filename:
+                a = ET.SubElement(p, '{%s}a' % TEXT_NS)
+                a.attrib['{%s}href' % XLINK_NS] = self.value
+                a.text = base_filename
+                return root
+        p.text = self.value
+        return root