forked from ScoDoc/ScoDoc
737 lines
26 KiB
Python
737 lines
26 KiB
Python
# -*- mode: python -*-
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# -*- coding: utf-8 -*-
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##############################################################################
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#
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# Gestion scolarite IUT
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#
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# Copyright (c) 1999 - 2021 Emmanuel Viennet. All rights reserved.
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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, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# Emmanuel Viennet emmanuel.viennet@viennet.net
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#
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##############################################################################
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"""Géneration de tables aux formats XHTML, PDF, Excel, XML et JSON.
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Les données sont fournies comme une liste de dictionnaires, chaque élément de
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cette liste décrivant une ligne du tableau.
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Chaque colonne est identifiée par une clé du dictionnaire.
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Voir exemple en fin de ce fichier.
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Les clés commençant par '_' sont réservées. Certaines altèrent le traitement, notamment
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pour spécifier les styles de mise en forme.
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Par exemple, la clé '_css_row_class' spécifie le style CSS de la ligne.
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"""
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from __future__ import print_function
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import random
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from collections import OrderedDict
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from xml.etree import ElementTree
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import json
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from reportlab.platypus import SimpleDocTemplate, Paragraph, Spacer, Frame, PageBreak
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from reportlab.platypus import Table, TableStyle, Image, KeepInFrame
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from reportlab.lib.colors import Color
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from reportlab.lib import styles
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from reportlab.lib.units import inch, cm, mm
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from reportlab.rl_config import defaultPageSize # pylint: disable=no-name-in-module
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from app.scodoc import html_sco_header
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from app.scodoc import sco_utils as scu
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from app.scodoc import sco_excel
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from app.scodoc import sco_pdf
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from app.scodoc import sco_xml
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from app.scodoc.sco_pdf import SU
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from app import log
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def mark_paras(L, tags):
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"""Put each (string) element of L between <b>"""
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for tag in tags:
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b = "<" + tag + ">"
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c = "</" + tag.split()[0] + ">"
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L = [b + (x or "") + c for x in L]
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return L
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class DEFAULT_TABLE_PREFERENCES(object):
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"""Default preferences for tables created without preferences argument"""
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values = {
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"SCOLAR_FONT": "Helvetica", # used for PDF, overriden by preferences argument
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"SCOLAR_FONT_SIZE": 10,
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"SCOLAR_FONT_SIZE_FOOT": 6,
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"bul_pdf_with_background": False,
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}
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def __getitem__(self, k):
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return self.values[k]
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class GenTable(object):
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"""Simple 2D tables with export to HTML, PDF, Excel, CSV.
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Can be sub-classed to generate fancy formats.
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"""
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default_css_class = "gt_table stripe cell-border compact hover order-column"
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def __init__(
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self,
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rows=[{}], # liste de dict { column_id : value }
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columns_ids=[], # id des colonnes a afficher, dans l'ordre
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titles={}, # titres (1ere ligne)
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bottom_titles={}, # titres derniere ligne (optionnel)
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caption=None,
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page_title="", # titre fenetre html
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pdf_link=True,
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xls_link=True,
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xml_link=False,
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table_id=None, # for html and xml
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html_class=None, # class de l'element <table> (en plus des classes par defaut,
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html_class_ignore_default=False, # sauf si html_class_ignore_default est vrai)
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html_sortable=False,
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html_highlight_n=2, # une ligne sur 2 de classe "gt_hl"
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html_col_width=None, # force largeur colonne
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html_generate_cells=True, # generate empty <td> cells even if not in rows (useless?)
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html_title="", # avant le tableau en html
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html_caption=None, # override caption if specified
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html_header=None,
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html_next_section="", # html fragment to put after the table
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html_with_td_classes=False, # put class=column_id in each <td>
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html_before_table="", # html snippet to put before the <table> in the page
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html_empty_element="", # replace table when empty
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base_url=None,
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origin=None, # string added to excel and xml versions
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filename="table", # filename, without extension
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xls_sheet_name="feuille",
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xls_before_table=[], # liste de cellules a placer avant la table
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pdf_title="", # au dessus du tableau en pdf
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pdf_table_style=None,
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pdf_col_widths=None,
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xml_outer_tag="table",
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xml_row_tag="row",
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text_with_titles=False, # CSV with header line
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text_fields_separator="\t",
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preferences=None,
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):
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self.rows = rows # [ { col_id : value } ]
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self.columns_ids = columns_ids # ordered list of col_id
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self.titles = titles # { col_id : title }
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self.bottom_titles = bottom_titles
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self.origin = origin
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self.base_url = base_url
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self.filename = filename
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self.caption = caption
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self.html_header = html_header
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self.html_before_table = html_before_table
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self.html_empty_element = html_empty_element
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self.page_title = page_title
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self.pdf_link = pdf_link
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self.xls_link = xls_link
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self.xml_link = xml_link
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# HTML parameters:
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if not table_id: # random id
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self.table_id = "gt_" + str(random.randint(0, 1000000))
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else:
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self.table_id = table_id
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self.html_generate_cells = html_generate_cells
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self.html_title = html_title
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self.html_caption = html_caption
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self.html_next_section = html_next_section
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self.html_with_td_classes = html_with_td_classes
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if html_class is None:
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html_class = self.default_css_class
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if html_class_ignore_default:
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self.html_class = html_class
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else:
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self.html_class = self.default_css_class + " " + html_class
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self.sortable = html_sortable
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self.html_highlight_n = html_highlight_n
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self.html_col_width = html_col_width
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# XLS parameters
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self.xls_sheet_name = xls_sheet_name
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self.xls_before_table = xls_before_table
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# PDF parameters
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self.pdf_table_style = pdf_table_style
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self.pdf_col_widths = pdf_col_widths
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self.pdf_title = pdf_title
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# XML parameters
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self.xml_outer_tag = xml_outer_tag
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self.xml_row_tag = xml_row_tag
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# TEXT parameters
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self.text_fields_separator = text_fields_separator
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self.text_with_titles = text_with_titles
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#
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if preferences:
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self.preferences = preferences
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else:
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self.preferences = DEFAULT_TABLE_PREFERENCES()
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def get_nb_cols(self):
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return len(self.columns_ids)
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def get_nb_rows(self):
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return len(self.rows)
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def is_empty(self):
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return len(self.rows) == 0
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def get_data_list(
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self,
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with_titles=False,
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with_lines_titles=True,
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with_bottom_titles=True,
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omit_hidden_lines=False,
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pdf_mode=False, # apply special pdf reportlab processing
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pdf_style_list=[], # modified: list of platypus table style commands
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):
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"table data as a list of lists (rows)"
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T = []
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line_num = 0 # line number in input data
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out_line_num = 0 # line number in output list
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if with_titles and self.titles:
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l = []
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if with_lines_titles:
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if "row_title" in self.titles:
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l = [self.titles["row_title"]]
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T.append(l + [self.titles.get(cid, "") for cid in self.columns_ids])
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for row in self.rows:
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line_num += 1
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l = []
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if with_lines_titles:
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if "row_title" in row:
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l = [row["row_title"]]
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if not (omit_hidden_lines and row.get("_hidden", False)):
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colspan_count = 0
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col_num = len(l)
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for cid in self.columns_ids:
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colspan_count -= 1
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# if colspan_count > 0:
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# continue # skip cells after a span
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content = row.get(cid, "") or "" # nota: None converted to ''
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colspan = row.get("_%s_colspan" % cid, 0)
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if colspan > 1:
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pdf_style_list.append(
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(
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"SPAN",
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(col_num, out_line_num),
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(col_num + colspan - 1, out_line_num),
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)
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)
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colspan_count = colspan
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l.append(content)
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col_num += 1
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if pdf_mode:
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mk = row.get("_pdf_row_markup", []) # a list of tags
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if mk:
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l = mark_paras(l, mk)
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T.append(l)
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#
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for cmd in row.get("_pdf_style", []): # relocate line numbers
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pdf_style_list.append(
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(
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cmd[0],
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(cmd[1][0], cmd[1][1] + out_line_num),
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(cmd[2][0], cmd[2][1] + out_line_num),
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)
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+ cmd[3:]
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)
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out_line_num += 1
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if with_bottom_titles and self.bottom_titles:
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line_num += 1
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l = []
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if with_lines_titles:
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if "row_title" in self.bottom_titles:
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l = [self.bottom_titles["row_title"]]
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T.append(l + [self.bottom_titles.get(cid, "") for cid in self.columns_ids])
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return T
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def get_titles_list(self):
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"list of titles"
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return [self.titles.get(cid, "") for cid in self.columns_ids]
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def gen(self, format="html", columns_ids=None):
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"""Build representation of the table in the specified format.
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See make_page() for more sophisticated output.
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"""
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if format == "html":
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return self.html()
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elif format == "xls" or format == "xlsx":
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return self.excel()
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elif format == "text" or format == "csv":
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return self.text()
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elif format == "pdf":
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return self.pdf()
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elif format == "xml":
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return self.xml()
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elif format == "json":
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return self.json()
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raise ValueError("GenTable: invalid format: %s" % format)
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def _gen_html_row(self, row, line_num=0, elem="td", css_classes=""):
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"row is a dict, returns a string <tr...>...</tr>"
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if not row:
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return "<tr></tr>" # empty row
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if self.html_col_width:
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std = ' style="width:%s;"' % self.html_col_width
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else:
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std = ""
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cla = css_classes + " " + row.get("_css_row_class", "")
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if line_num % self.html_highlight_n:
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cls = ' class="gt_hl %s"' % cla
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else:
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if cla:
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cls = ' class="%s"' % cla
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else:
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cls = ""
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H = ["<tr%s %s>" % (cls, row.get("_tr_attrs", ""))]
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# titre ligne
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if "row_title" in row:
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content = str(row["row_title"])
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help = row.get("row_title_help", "")
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if help:
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content = '<a class="discretelink" href="" title="%s">%s</a>' % (
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help,
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content,
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)
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H.append('<th class="gt_linetit">' + content + "</th>")
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r = []
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colspan_count = 0
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for cid in self.columns_ids:
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if not cid in row and not self.html_generate_cells:
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continue # skip cell
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colspan_count -= 1
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if colspan_count > 0:
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continue # skip cells after a span
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content = row.get("_" + str(cid) + "_html", row.get(cid, ""))
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if content is None:
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content = ""
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else:
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content = str(content)
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help = row.get("_%s_help" % cid, "")
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if help:
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target = row.get("_%s_target" % cid, "#")
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else:
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target = row.get("_%s_target" % cid, "")
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cell_id = row.get("_%s_id" % cid, None)
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if cell_id:
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idstr = ' id="%s"' % cell_id
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else:
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idstr = ""
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cell_link_class = row.get("_%s_link_class" % cid, "discretelink")
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if help or target:
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content = '<a class="%s" href="%s" title="%s"%s>%s</a>' % (
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cell_link_class,
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target,
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help,
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idstr,
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content,
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)
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klass = row.get("_%s_class" % cid, "")
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if self.html_with_td_classes:
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c = cid
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else:
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c = ""
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if c or klass:
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klass = ' class="%s"' % (" ".join((klass, c)))
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else:
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klass = ""
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colspan = row.get("_%s_colspan" % cid, 0)
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if colspan > 1:
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colspan_txt = ' colspan="%d" ' % colspan
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colspan_count = colspan
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else:
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colspan_txt = ""
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r.append(
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"<%s%s %s%s%s>%s</%s>"
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% (
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elem,
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std,
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row.get("_%s_td_attrs" % cid, ""),
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klass,
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colspan_txt,
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content,
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elem,
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)
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)
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H.append("".join(r) + "</tr>")
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return "".join(H)
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def html(self):
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"Simple HTML representation of the table"
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if self.is_empty() and self.html_empty_element:
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return self.html_empty_element + "\n" + self.html_next_section
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hid = ' id="%s"' % self.table_id
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tablclasses = []
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if self.html_class:
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tablclasses.append(self.html_class)
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if self.sortable:
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tablclasses.append("sortable")
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if tablclasses:
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cls = ' class="%s"' % " ".join(tablclasses)
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else:
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cls = ""
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H = [self.html_before_table, "<table%s%s>" % (hid, cls)]
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line_num = 0
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# thead
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H.append("<thead>")
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if self.titles:
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H.append(
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self._gen_html_row(
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self.titles, line_num, elem="th", css_classes="gt_firstrow"
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)
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)
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# autres lignes à placer dans la tête:
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for row in self.rows:
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if row.get("_table_part") == "head":
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line_num += 1
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H.append(self._gen_html_row(row, line_num)) # uses td elements
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H.append("</thead>")
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H.append("<tbody>")
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for row in self.rows:
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if row.get("_table_part", "body") == "body":
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line_num += 1
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H.append(self._gen_html_row(row, line_num))
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H.append("</tbody>")
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H.append("<tfoot>")
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for row in self.rows:
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if row.get("_table_part") == "foot":
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line_num += 1
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H.append(self._gen_html_row(row, line_num))
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if self.bottom_titles:
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H.append(
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self._gen_html_row(
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self.bottom_titles,
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line_num + 1,
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elem="th",
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css_classes="gt_lastrow sortbottom",
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)
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)
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H.append("</tfoot>")
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H.append("</table>")
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caption = self.html_caption or self.caption
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if caption or self.base_url:
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H.append('<p class="gt_caption">')
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if caption:
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H.append(caption)
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if self.base_url:
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H.append('<span class="gt_export_icons">')
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if self.xls_link:
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H.append(
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' <a href="%s&format=xls">%s</a>'
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% (self.base_url, scu.ICON_XLS)
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)
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if self.xls_link and self.pdf_link:
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H.append(" ")
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if self.pdf_link:
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H.append(
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' <a href="%s&format=pdf">%s</a>'
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% (self.base_url, scu.ICON_PDF)
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)
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H.append("</span>")
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H.append("</p>")
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H.append(self.html_next_section)
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return "\n".join(H)
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def excel(self, wb=None):
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"""Simple Excel representation of the table"""
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ses = sco_excel.ScoExcelSheet(sheet_name=self.xls_sheet_name, wb=wb)
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ses.rows += self.xls_before_table
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style_bold = sco_excel.excel_make_style(bold=True)
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style_base = sco_excel.excel_make_style()
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ses.append_row(ses.make_row(self.get_titles_list(), style_bold))
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for line in self.get_data_list():
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ses.append_row(ses.make_row(line, style_base))
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if self.caption:
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ses.append_blank_row() # empty line
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ses.append_single_cell_row(self.caption, style_base)
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if self.origin:
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ses.append_blank_row() # empty line
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ses.append_single_cell_row(self.origin, style_base)
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if wb is None:
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return ses.generate_standalone()
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else:
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ses.generate_embeded()
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def text(self):
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"raw text representation of the table"
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if self.text_with_titles:
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headline = [self.get_titles_list()]
|
|
else:
|
|
headline = []
|
|
return "\n".join(
|
|
[
|
|
self.text_fields_separator.join([x for x in line])
|
|
for line in headline + self.get_data_list()
|
|
]
|
|
)
|
|
|
|
def pdf(self):
|
|
"PDF representation: returns a ReportLab's platypus Table instance"
|
|
r = []
|
|
try:
|
|
sco_pdf.PDFLOCK.acquire()
|
|
r = self._pdf()
|
|
finally:
|
|
sco_pdf.PDFLOCK.release()
|
|
return r
|
|
|
|
def _pdf(self):
|
|
"""PDF representation: returns a list of ReportLab's platypus objects
|
|
(notably a Table instance)
|
|
"""
|
|
if not self.pdf_table_style:
|
|
LINEWIDTH = 0.5
|
|
self.pdf_table_style = [
|
|
("FONTNAME", (0, 0), (-1, 0), self.preferences["SCOLAR_FONT"]),
|
|
("LINEBELOW", (0, 0), (-1, 0), LINEWIDTH, Color(0, 0, 0)),
|
|
("GRID", (0, 0), (-1, -1), LINEWIDTH, Color(0, 0, 0)),
|
|
("VALIGN", (0, 0), (-1, -1), "TOP"),
|
|
]
|
|
nb_cols = len(self.columns_ids)
|
|
if self.rows and "row_title" in self.rows[0]:
|
|
nb_cols += 1
|
|
if not self.pdf_col_widths:
|
|
self.pdf_col_widths = (None,) * nb_cols
|
|
#
|
|
CellStyle = styles.ParagraphStyle({})
|
|
CellStyle.fontSize = self.preferences["SCOLAR_FONT_SIZE"]
|
|
CellStyle.fontName = self.preferences["SCOLAR_FONT"]
|
|
CellStyle.leading = 1.0 * self.preferences["SCOLAR_FONT_SIZE"] # vertical space
|
|
LINEWIDTH = 0.5
|
|
#
|
|
# titles = ["<para><b>%s</b></para>" % x for x in self.get_titles_list()]
|
|
pdf_style_list = []
|
|
Pt = [
|
|
[Paragraph(SU(str(x)), CellStyle) for x in line]
|
|
for line in (
|
|
self.get_data_list(
|
|
pdf_mode=True,
|
|
pdf_style_list=pdf_style_list,
|
|
with_titles=True,
|
|
omit_hidden_lines=True,
|
|
)
|
|
)
|
|
]
|
|
pdf_style_list += self.pdf_table_style
|
|
T = Table(Pt, repeatRows=1, colWidths=self.pdf_col_widths, style=pdf_style_list)
|
|
|
|
objects = []
|
|
StyleSheet = styles.getSampleStyleSheet()
|
|
if self.pdf_title:
|
|
objects.append(Paragraph(SU(self.pdf_title), StyleSheet["Heading3"]))
|
|
if self.caption:
|
|
objects.append(Paragraph(SU(self.caption), StyleSheet["Normal"]))
|
|
objects.append(Spacer(0, 0.4 * cm))
|
|
objects.append(T)
|
|
|
|
return objects
|
|
|
|
def xml(self):
|
|
"""XML representation of the table.
|
|
The schema is very simple:
|
|
<table origin="" id="" caption="">
|
|
<row title="">
|
|
<column_id value=""/>
|
|
</row>
|
|
</table>
|
|
The tag names <table> and <row> can be changed using
|
|
xml_outer_tag and xml_row_tag
|
|
"""
|
|
doc = ElementTree.Element(
|
|
self.xml_outer_tag,
|
|
id=self.table_id,
|
|
origin=self.origin or "",
|
|
caption=self.caption or "",
|
|
)
|
|
for row in self.rows:
|
|
x_row = ElementTree.Element(self.xml_row_tag)
|
|
row_title = row.get("row_title", "")
|
|
if row_title:
|
|
x_row.set("title", row_title)
|
|
doc.append(x_row)
|
|
for cid in self.columns_ids:
|
|
v = row.get(cid, "")
|
|
if v is None:
|
|
v = ""
|
|
x_cell = ElementTree.Element(cid, value=str(v))
|
|
x_row.append(x_cell)
|
|
return sco_xml.XML_HEADER + ElementTree.tostring(doc).decode(scu.SCO_ENCODING)
|
|
|
|
def json(self):
|
|
"""JSON representation of the table."""
|
|
d = []
|
|
for row in self.rows:
|
|
r = {}
|
|
for cid in self.columns_ids:
|
|
v = row.get(cid, None)
|
|
# if v != None:
|
|
# v = str(v)
|
|
r[cid] = v
|
|
d.append(r)
|
|
return json.dumps(d, cls=scu.ScoDocJSONEncoder)
|
|
|
|
def make_page(
|
|
self,
|
|
title="",
|
|
format="html",
|
|
page_title="",
|
|
filename=None,
|
|
REQUEST=None,
|
|
javascripts=[],
|
|
with_html_headers=True,
|
|
publish=True,
|
|
init_qtip=False,
|
|
):
|
|
"""
|
|
Build page at given format
|
|
This is a simple page with only a title and the table.
|
|
If not publish, does not set response header
|
|
"""
|
|
if not filename:
|
|
filename = self.filename
|
|
page_title = page_title or self.page_title
|
|
html_title = self.html_title or title
|
|
if format == "html":
|
|
H = []
|
|
if with_html_headers:
|
|
H.append(
|
|
self.html_header
|
|
or html_sco_header.sco_header(
|
|
page_title=page_title,
|
|
javascripts=javascripts,
|
|
init_qtip=init_qtip,
|
|
)
|
|
)
|
|
if html_title:
|
|
H.append(html_title)
|
|
H.append(self.html())
|
|
if with_html_headers:
|
|
H.append(html_sco_header.sco_footer())
|
|
return "\n".join(H)
|
|
elif format == "pdf":
|
|
objects = self.pdf()
|
|
doc = sco_pdf.pdf_basic_page(
|
|
objects, title=title, preferences=self.preferences
|
|
)
|
|
if publish:
|
|
return scu.sendPDFFile(REQUEST, doc, filename + ".pdf")
|
|
else:
|
|
return doc
|
|
elif format == "xls" or format == "xlsx":
|
|
xls = self.excel()
|
|
if publish:
|
|
return sco_excel.send_excel_file(
|
|
REQUEST, xls, filename + scu.XLSX_SUFFIX
|
|
)
|
|
else:
|
|
return xls
|
|
elif format == "text":
|
|
return self.text()
|
|
elif format == "csv":
|
|
return scu.sendCSVFile(REQUEST, self.text(), filename + ".csv")
|
|
elif format == "xml":
|
|
xml = self.xml()
|
|
if REQUEST and publish:
|
|
REQUEST.RESPONSE.setHeader("content-type", scu.XML_MIMETYPE)
|
|
return xml
|
|
elif format == "json":
|
|
js = self.json()
|
|
if REQUEST and publish:
|
|
REQUEST.RESPONSE.setHeader("content-type", scu.JSON_MIMETYPE)
|
|
return js
|
|
else:
|
|
log("make_page: format=%s" % format)
|
|
raise ValueError("_make_page: invalid format")
|
|
|
|
|
|
# -----
|
|
class SeqGenTable(object):
|
|
"""Sequence de GenTable: permet de générer un classeur excel avec un tab par table.
|
|
L'ordre des tabs est conservé (1er tab == 1ere table ajoutée)
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.genTables = OrderedDict()
|
|
|
|
def add_genTable(self, name, gentable):
|
|
self.genTables[name] = gentable
|
|
|
|
def get_genTable(self, name):
|
|
return self.genTables.get(name)
|
|
|
|
def excel(self):
|
|
"""Export des genTables dans un unique fichier excel avec plusieurs feuilles tagguées"""
|
|
book = sco_excel.ScoExcelBook() # pylint: disable=no-member
|
|
for (_, gt) in self.genTables.items():
|
|
gt.excel(wb=book) # Ecrit dans un fichier excel
|
|
return book.generate()
|
|
|
|
|
|
# ----- Exemple d'utilisation minimal.
|
|
if __name__ == "__main__":
|
|
T = GenTable(
|
|
rows=[{"nom": "Hélène", "age": 26}, {"nom": "Titi&çà§", "age": 21}],
|
|
columns_ids=("nom", "age"),
|
|
)
|
|
print("--- HTML:")
|
|
print(T.gen(format="html"))
|
|
print("\n--- XML:")
|
|
print(T.gen(format="xml"))
|
|
print("\n--- JSON:")
|
|
print(T.gen(format="json"))
|
|
# Test pdf:
|
|
import io
|
|
from reportlab.platypus import KeepInFrame
|
|
from app.scodoc import sco_preferences, sco_pdf
|
|
|
|
preferences = sco_preferences.SemPreferences()
|
|
T.preferences = preferences
|
|
objects = T.gen(format="pdf")
|
|
objects = [KeepInFrame(0, 0, objects, mode="shrink")]
|
|
doc = io.BytesIO()
|
|
document = sco_pdf.BaseDocTemplate(doc)
|
|
document.addPageTemplates(
|
|
sco_pdf.ScolarsPageTemplate(
|
|
document,
|
|
)
|
|
)
|
|
document.build(objects)
|
|
data = doc.getvalue()
|
|
open("/tmp/gen_table.pdf", "wb").write(data)
|
|
p = T.make_page(format="pdf", REQUEST=None)
|
|
open("toto.pdf", "wb").write(p)
|