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390 lines
11 KiB
390 lines
11 KiB
from flask import Flask, Response, request, render_template
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import subprocess
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import os
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import re
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import sys
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import tempfile
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import io
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import requests
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from svg_to_hpgl import svgToHPGL
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app = Flask(__name__)
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title = 'Cobbled paths'
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fonts_directory = 'db/'
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possible_extensions = [".flf"]
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etherpad = 'https://pad.constantvzw.org/p/'
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prefix = 'cobbled-pad-'
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# VARIABLES 4 CATALOGUE
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# ------------------------------
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output = {
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'stroke': { 'ascii': ' | ' , 'fonts': [] },
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'script': { 'ascii': ' _/' , 'fonts': [] },
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'block': { 'ascii': '|_|' , 'fonts': [] },
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'outline': { 'ascii': '/ /' , 'fonts': [] },
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'effect': { 'ascii': ': :' , 'fonts': [] },
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'pattern': { 'ascii': ')()' , 'fonts': [] },
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# 'fill': { 'ascii': '_/', 'fonts': {} },
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# 'directions': { 'ascii': '_/', 'fonts': {} },
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# '3d': { 'ascii': '_/', 'fonts': {} },
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# 'frame': { 'ascii': '_/', 'fonts': {} },
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# 'code': { 'ascii': '_/', 'fonts': {} },
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}
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databases = {
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'default': 'fonts made by the figlet developpers and given with the program, early 1993',
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'contributed': 'fonts made by figlet amateurs and submitted to the official figlet ftp, from before 1993 to 2005',
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'jave': 'figlet font library of JavE (a free Ascii drawing Editor)',
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}
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# VARIABLES 4 REGEX
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# ------------------------------
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# all the character that svgbob understand
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spec = [".", ",", "’", "'", "`", "+", "*", "o", "O", "V", "\\-", "|", "~", "_", ":", "!", "<", ">", "v", "^", "/", "\\\\", '\\”', '\\"', "(", ")", "=", "#"]
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r_spec = "".join(spec)
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r_nspec = "[^" + r_spec + "\€\$\s]"
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# autofix regex
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autofix = [
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# every arrowshead into lines
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[re.compile("[<{]"), "("],
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[re.compile("[>}L]"), ")"],
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[re.compile("[vV]"), "-"],
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[re.compile("[\\^]"), "-"],
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[";", ":"],
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["7", "/"],
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[re.compile("[1Tlj\\[\\]]"), "|"],
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[re.compile("[Y]"), "+"],
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# every not in the spec --> block
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[re.compile(r_nspec), "#"],
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]
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# FUNCTIONS
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# ------------------------------
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def most_common(lst):
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return max(set(lst), key=lst.count)
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def text2figlet(text, figfont):
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print('--- FIGLET SUBPROCESS')
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figlet = subprocess.run(["figlet", text, "-f", figfont, "-w", "160"], stdout = subprocess.PIPE, stderr = subprocess.PIPE, text=True)
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print(figlet.stdout)
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if figlet.returncode == 0:
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answer = (True, figlet.stdout)
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else:
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answer = (False, figlet.stderr)
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return answer
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def ascii2svg(ascii, weight):
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if ascii:
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print('--- SVGBOB SUBPROCESS')
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svgbob = subprocess.run(["svgbob_cli", '--stroke-width', weight], input = ascii, stdout = subprocess.PIPE, text=True)
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return svgbob.stdout
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else:
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return "ERROR: etherpad request failed"
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def ascii_autofix(ascii):
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print('--- REGEX AUTOFIX')
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for regex, replace in autofix:
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ascii = re.sub(regex, replace, ascii)
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return ascii
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def autofix_indication(ascii):
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for regex, replace in autofix:
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# the two markers have to not appear in any regex
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ascii = re.sub(regex, "$" + replace + "€", ascii)
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ascii = re.sub("[\$]", "<span class='fix'>", ascii)
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ascii = re.sub("[\€]", "</span>", ascii)
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return ascii
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def get_pad(url):
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# get pad content
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print('--- ETHERPAD REQUEST')
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print(url)
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pad_export = requests.get(url + '/export/txt')
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if pad_export.status_code == requests.codes.ok:
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answer = (True, pad_export.text)
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else:
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answer = (False, "ERROR: etherpad request failed")
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return answer
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def make_figfont(ascii):
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print('--- MAKE TEMP FIGFONT')
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(figfont_file, figfont_path) = tempfile.mkstemp(suffix='.flf')
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print(figfont_path)
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with open(figfont_path, 'w') as figfont_file:
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figfont_file.write(ascii)
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return figfont_path
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# ROUTES
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# ------------------------------
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# _ _
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# (_)_ __ __| | _____ __
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# | | '_ \ / _` |/ _ \ \/ /
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# | | | | | (_| | __/> <
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# |_|_| |_|\__,_|\___/_/\_\
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#
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# PRESENT THE TOOL
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@app.route("/")
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def index():
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return render_template(
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'index.html',
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title = title)
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# _
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# __| |_ __ __ ___ __
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# / _` | '__/ _` \ \ /\ / /
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# | (_| | | | (_| |\ V V /
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# \__,_|_| \__,_| \_/\_/
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#
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# ETHERPAD 2 SVGBOB INTERFACE
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# one iframe for the etherpad
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# another iframe to dump the generated svg
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@app.route("/draw.html")
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def draw():
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params = {
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'pad': request.args.get('p') or 'default',
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'weight': request.args.get('w') or '3',
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}
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params['pad-full'] = etherpad + prefix + params['pad']
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return render_template(
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'draw.html',
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title = title,
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params = params)
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# this is the route of the iframe where the svg is generated and dumped
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@app.route("/drawing/<id>")
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def drawing(id):
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params = {
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'pad': id or 'default',
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'weight': request.args.get('w') or '3',
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}
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params['pad-full'] = etherpad + prefix + params['pad']
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pad_answer = get_pad(params['pad-full'])
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if pad_answer[0]:
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ascii = pad_answer[1]
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svg = ascii2svg(ascii, params['weight'])
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else:
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svg = pad_answer[1]
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return render_template(
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'drawing.html',
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title = title,
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params = params,
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svg = svg)
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# __ _ _ _
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# / _| ___ _ __ | |_ _ __ ___ __ _| | _(_)_ __ __ _
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# | |_ / _ \| '_ \| __| | '_ ` _ \ / _` | |/ / | '_ \ / _` |
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# | _| (_) | | | | |_ | | | | | | (_| | <| | | | | (_| |
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# |_| \___/|_| |_|\__| |_| |_| |_|\__,_|_|\_\_|_| |_|\__, |
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# |___/
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#
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# EDITING A FIGGONT ON A PAD TO THEN USE IT
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@app.route("/font.html")
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def font():
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params = {
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'text': request.args.get('t') or 'the quick brown fox jumps over the lazy dog',
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'pad': request.args.get('p') or 'standard',
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'weight': request.args.get('w') or '3',
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}
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params['pad-full'] = etherpad + prefix + params['pad']
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return render_template(
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'font.html',
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title = title,
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params = params)
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@app.route("/writing/<id>")
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def writing(id):
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params = {
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'text': request.args.get('t') or 'the quick brown fox jumps over the lazy dog',
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'pad': id or 'standard',
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'weight': request.args.get('w') or '3',
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}
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params['pad-full'] = etherpad + prefix + params['pad']
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pad_answer = get_pad(params['pad-full'])
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# TODO: only create new file if content of pad changed
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# store as a temporary file
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if pad_answer[0]:
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ascii = pad_answer[1]
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figfont = make_figfont(ascii)
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figlet_answer = text2figlet(params['text'], figfont)
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if figlet_answer[0]:
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ascii = figlet_answer[1]
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svg = ascii2svg(figlet_answer[1], params['weight'])
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else:
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ascii = svg = figlet_answer[1]
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else:
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ascii = svg = pad_answer[1]
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return render_template(
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'writing.html',
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title = title,
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params = params,
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ascii = ascii,
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svg = svg)
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# _ _
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# ___ __ _| |_ __ _| | ___ __ _ _ _ ___
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# / __/ _` | __/ _` | |/ _ \ / _` | | | |/ _ \
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# | (_| (_| | || (_| | | (_) | (_| | |_| | __/
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# \___\__,_|\__\__,_|_|\___/ \__, |\__,_|\___|
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# |___/
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#
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# FIGLET 2 SVGBOB INTERACTIVE CATALOGUE
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# @app.route("/catalogue.html")
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# def catalogue():
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# # text and weight as get parameter
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# params = {
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# 'text': request.args.get('t') or 'Echoes',
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# 'weight': request.args.get('w') or '3',
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# }
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# # walk in the figlet font directory
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# for root, dirs, files in os.walk(fonts_directory):
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# for name in files:
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# (basename, ext) = os.path.splitext(name)
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# if ext in possible_extensions:
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# figfont = os.path.join(root, name)
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# print(figfont)
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# # get font category out of last folder
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# catalogue = root.split('/')[-2]
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# type = root.split('/')[-1]
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# if type in output:
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# f = {}
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# output[type]['fonts'].append(f)
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# f['name'] = name
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# f['catalogue'] = catalogue
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# f['ascii'] = text2figlet(params['text'], figfont)
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# f['svg'] = ascii2svg(f['ascii'], params['weight'])
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# # regex auto_fix
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# f['ascii_fix'] = ascii_autofix(f['ascii'])
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# if f['ascii'] != f['ascii_fix']:
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# f['autofix'] = True
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# f['ascii_fix_indication'] = autofix_indication(f['ascii_fix'])
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# f['svg_fix'] = ascii2svg(f['ascii_fix'], params['weight'])
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# return render_template(
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# 'catalogue.html',
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# title = title,
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# databases = databases,
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# output = output,
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# params = params)
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# _ _ _
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# | |__ _ __ __ _| | _____ ___ __ ___ _ __| |_
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# | '_ \| '_ \ / _` | | / _ \ \/ / '_ \ / _ \| '__| __|
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# | | | | |_) | (_| | | | __/> <| |_) | (_) | | | |_
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# |_| |_| .__/ \__, |_| \___/_/\_\ .__/ \___/|_| \__|
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# |_| |___/ |_|
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#
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# FIGLET 2 SVGBOB INTERACTIVE CATALOGUE
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def resizeSVG (m):
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width = int(m.group(1))
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height = int(m.group(2))
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viewbox = f'0 0 {width} {height}'
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newHeight = 420
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newWidth = (width/height) * newHeight
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return f'<svg xmlns="http://www.w3.org/2000/svg" viewbox="{viewbox}" width="{newWidth}mm" height="{newHeight}mm" class="svgbob">'
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@app.route('/hpgl/<id>')
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def hpgl (id):
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params = {
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'pad': id or 'default',
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'weight': request.args.get('w') or '3',
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}
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params['pad-full'] = etherpad + prefix + params['pad']
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# get pad content
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print(' getting ' + params['pad-full'])
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pad_export = requests.get(params['pad-full'] + '/export/txt')
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ascii = pad_export.text
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# to SVG
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svg = ascii2svg(ascii, params['weight'])
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# Remove background rect inserted by SVG Bob
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svg = re.sub(r'\<rect class="backdrop" x="\d+" y="\d+" width="\d+" height="\d+">\<\/rect\>', '', svg, flags=re.M)
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svg = re.sub(r'<svg xmlns="http://www.w3.org/2000/svg" width="(\d+)" height="(\d+)" class="svgbob">', resizeSVG,svg)
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# store as a temporary file
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(svg_file, svg_path) = tempfile.mkstemp('.svg')
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(hpgl_file, hpgl_path) = tempfile.mkstemp('.hpgl')
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with open(svg_file, 'w') as svg_handle:
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svg_handle.write(svg)
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output = subprocess.run([
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"vpype",
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"read",
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"--single-layer",
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svg_path,
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"scaleto",
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"297mm", "420mm",
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"linemerge",
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"-t", "0.25mm",
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"linesort",
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"write",
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"--device", "dxy",
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"--color-mode", "none",
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"--page-size", "a3",
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"--landscape",
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hpgl_path
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])
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with open(hpgl_file, 'r') as hpgl_handle:
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r = Response(hpgl_handle.read(), mimetype='application/hpgl')
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r.headers.extend({
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'Content-Disposition': f'attachment; filename="cobbled-paths-{id}.hpgl"'
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})
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# remove tmp file
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os.remove(svg_path)
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os.remove(hpgl_path)
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return r
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if __name__ == '__main__':
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app.run(debug=True, host='0.0.0.0')
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