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Implemented micron markup parser
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Mark Qvist
parent
4c226b7e00
commit
2f2fdd6a0c
5 changed files with 909 additions and 244 deletions
275
nomadnet/ui/textui/MicronParser.py
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275
nomadnet/ui/textui/MicronParser.py
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import nomadnet
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import urwid
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import re
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STYLES = {
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"plain": { "fg": "bbb", "bg": "default", "bold": False, "underline": False, "italic": False },
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"heading1": { "fg": "222", "bg": "bbb", "bold": False, "underline": False, "italic": False },
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"heading2": { "fg": "111", "bg": "999", "bold": False, "underline": False, "italic": False },
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"heading3": { "fg": "000", "bg": "777", "bold": False, "underline": False, "italic": False },
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}
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SYNTH_STYLES = []
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SECTION_INDENT = 2
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INDENT_RIGHT = 1
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def markup_to_attrmaps(markup):
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attrmaps = []
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state = {
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"literal": False,
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"depth": 0,
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"fg_color": "default",
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"bg_color": "default",
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"formatting": {
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"bold": False,
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"underline": False,
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"italic": False,
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"strikethrough": False,
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"blink": False,
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},
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"default_align": "left",
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"align": "left",
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}
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# Split entire document into lines for
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# processing.
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lines = markup.split("\n");
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for line in lines:
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if len(line) > 0:
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display_widget = parse_line(line, state)
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else:
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display_widget = urwid.Text("")
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if display_widget != None:
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attrmap = urwid.AttrMap(display_widget, make_style(state))
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attrmaps.append(attrmap)
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return attrmaps
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def parse_line(line, state):
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if len(line) > 0:
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first_char = line[0]
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# Check for literals
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if len(line) == 2 and line == "`=":
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state["literal"] ^= True
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return None
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# Only parse content if not in literal state
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if not state["literal"]:
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# Check if the command is an escape
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if first_char == "\\":
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line = line[1:]
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# Check for section heading reset
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elif first_char == "<":
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state["depth"] = 0
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return parse_line(line[1:], state)
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# Check for section headings
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elif first_char == ">":
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i = 0
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while i < len(line) and line[i] == ">":
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i += 1
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state["depth"] = i
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for j in range(1, i+1):
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wanted_style = "heading"+str(i)
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if wanted_style in STYLES:
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style = STYLES[wanted_style]
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line = line[state["depth"]:]
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if len(line) > 0:
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latched_style = state_to_style(state)
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style_to_state(style, state)
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heading_style = make_style(state)
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output = make_output(state, line)
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style_to_state(latched_style, state)
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if len(output) > 0:
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first_style = output[0][0]
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heading_style = first_style
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output.insert(0, " "*left_indent(state))
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return urwid.AttrMap(urwid.Text(output, align=state["align"]), heading_style)
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else:
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return None
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else:
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return None
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# Check for horizontal dividers
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elif first_char == "-":
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if len(line) == 2:
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divider_char = line[1]
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else:
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divider_char = "\u2500"
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if state["depth"] == 0:
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return urwid.Divider(divider_char)
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else:
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return urwid.Padding(urwid.Divider(divider_char), left=left_indent(state), right=right_indent(state))
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output = make_output(state, line)
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if output != None:
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if state["depth"] == 0:
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return urwid.Text(output, align=state["align"])
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else:
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return urwid.Padding(urwid.Text(output, align=state["align"]), left=left_indent(state), right=right_indent(state))
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else:
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return None
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else:
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return None
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def left_indent(state):
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return (state["depth"]-1)*SECTION_INDENT
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def right_indent(state):
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return (state["depth"]-1)*SECTION_INDENT
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def make_part(state, part):
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return (make_style(state), part)
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def state_to_style(state):
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return { "fg": state["fg_color"], "bg": state["bg_color"], "bold": state["formatting"]["bold"], "underline": state["formatting"]["underline"], "italic": state["formatting"]["italic"] }
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def style_to_state(style, state):
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if style["fg"] != None:
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state["fg_color"] = style["fg"]
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if style["bg"] != None:
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state["bg_color"] = style["bg"]
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if style["bold"] != None:
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state["formatting"]["bold"] = style["bold"]
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if style["underline"] != None:
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state["formatting"]["underline"] = style["underline"]
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if style["italic"] != None:
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state["formatting"]["italic"] = style["italic"]
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def make_style(state):
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def mono_color(fg, bg):
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return "default"
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def low_color(color):
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# TODO: Implement
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return "default"
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def high_color(color):
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if color == "default":
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return color
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else:
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return "#"+color
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bold = state["formatting"]["bold"]
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underline = state["formatting"]["underline"]
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italic = state["formatting"]["italic"]
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fg = state["fg_color"]
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bg = state["bg_color"]
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format_string = ""
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if bold:
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format_string += ",bold"
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if underline:
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format_string += ",underline"
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if italic:
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format_string += ",italics"
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name = "micron_"+fg+"_"+bg+"_"+format_string
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if not name in SYNTH_STYLES:
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screen = nomadnet.NomadNetworkApp.get_shared_instance().ui.screen
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screen.register_palette_entry(name, low_color(fg)+format_string,low_color(bg),mono_color(fg, bg)+format_string,high_color(fg)+format_string,high_color(bg))
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SYNTH_STYLES.append(name)
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return name
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def make_output(state, line):
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output = []
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if state["literal"]:
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if line == "\\`=":
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line = "`="
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output.append(make_part(state, line))
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else:
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part = ""
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mode = "text"
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escape = False
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skip = 0
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for i in range(0, len(line)):
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c = line[i]
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if skip > 0:
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skip -= 1
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else:
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if mode == "formatting":
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if c == "_":
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state["formatting"]["underline"] ^= True
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elif c == "!":
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state["formatting"]["bold"] ^= True
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elif c == "*":
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state["formatting"]["italic"] ^= True
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elif c == "F":
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if len(line) >= i+4:
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color = line[i+1:i+4]
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state["fg_color"] = color
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skip = 3
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elif c == "f":
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state["fg_color"] = "default"
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elif c == "B":
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if len(line) >= i+4:
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color = line[i+1:i+4]
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state["bg_color"] = color
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skip = 3
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elif c == "b":
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state["bg_color"] = "default"
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elif c == "`":
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state["formatting"]["bold"] = False
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state["formatting"]["underline"] = False
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state["formatting"]["italic"] = False
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state["fg_color"] = "default"
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state["bg_color"] = "default"
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state["align"] = state["default_align"]
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elif c == "c":
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if state["align"] != "center":
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state["align"] = "center"
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else:
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state["align"] = state["default_align"]
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elif c == "l":
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if state["align"] != "left":
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state["align"] = "left"
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else:
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state["align"] = state["default_align"]
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elif c == "r":
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if state["align"] != "right":
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state["align"] = "right"
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else:
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state["align"] = state["default_align"]
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elif c == "a":
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state["align"] = state["default_align"]
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mode = "text"
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if len(part) > 0:
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output.append(make_part(state, part))
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elif mode == "text":
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if c == "\\":
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escape = True
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elif c == "`":
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if escape:
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part += c
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escape = False
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else:
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mode = "formatting"
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if len(part) > 0:
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output.append(make_part(state, part))
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part = ""
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else:
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part += c
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if i == len(line)-1:
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if len(part) > 0:
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output.append(make_part(state, part))
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if len(output) > 0:
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return output
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else:
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return None
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