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comparison orpg/external/terminalwriter.py @ 66:c54768cffbd4 ornery-dev

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Traipse Dev 'OpenRPG' {090818-00} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc''s main goal is to offer more advanced features and enhance the productivity of the user. Update Summary: *Unstable* This is the first wave of Code Refinement updates. Includes new material from Core Beta; new debugger material (partially implemented), beginnings of switch to etree, TerminalWriter, and a little more. open_rpg has been renamed to component; functioning now as component.get(), component.add(), component.delete(). This version has known bugs, specifically with the gametree and nodes. I think the XML files where not removed during testing of Core and switching back.
author sirebral
date Tue, 18 Aug 2009 06:33:37 -0500
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65:4840657c23c5 66:c54768cffbd4
1 """
2
3 Helper functions for writing to terminals and files.
4
5 """
6
7
8 import sys, os
9 from orpg.external.std import std
10
11 def _getdimensions():
12 import termios,fcntl,struct
13 call = fcntl.ioctl(0,termios.TIOCGWINSZ,"\000"*8)
14 height,width = struct.unpack( "hhhh", call ) [:2]
15 return height, width
16
17 if sys.platform == 'win32':
18 # ctypes access to the Windows console
19
20 STD_OUTPUT_HANDLE = -11
21 STD_ERROR_HANDLE = -12
22 FOREGROUND_BLUE = 0x0001 # text color contains blue.
23 FOREGROUND_GREEN = 0x0002 # text color contains green.
24 FOREGROUND_RED = 0x0004 # text color contains red.
25 FOREGROUND_WHITE = 0x0007
26 FOREGROUND_INTENSITY = 0x0008 # text color is intensified.
27 BACKGROUND_BLUE = 0x0010 # background color contains blue.
28 BACKGROUND_GREEN = 0x0020 # background color contains green.
29 BACKGROUND_RED = 0x0040 # background color contains red.
30 BACKGROUND_WHITE = 0x0070
31 BACKGROUND_INTENSITY = 0x0080 # background color is intensified.
32
33 def GetStdHandle(kind):
34 import ctypes
35 return ctypes.windll.kernel32.GetStdHandle(kind)
36
37 def SetConsoleTextAttribute(handle, attr):
38 import ctypes
39 ctypes.windll.kernel32.SetConsoleTextAttribute(
40 handle, attr)
41
42 def _getdimensions():
43 import ctypes
44 from ctypes import wintypes
45
46 SHORT = ctypes.c_short
47 class COORD(ctypes.Structure):
48 _fields_ = [('X', SHORT),
49 ('Y', SHORT)]
50 class SMALL_RECT(ctypes.Structure):
51 _fields_ = [('Left', SHORT),
52 ('Top', SHORT),
53 ('Right', SHORT),
54 ('Bottom', SHORT)]
55 class CONSOLE_SCREEN_BUFFER_INFO(ctypes.Structure):
56 _fields_ = [('dwSize', COORD),
57 ('dwCursorPosition', COORD),
58 ('wAttributes', wintypes.WORD),
59 ('srWindow', SMALL_RECT),
60 ('dwMaximumWindowSize', COORD)]
61 STD_OUTPUT_HANDLE = -11
62 handle = GetStdHandle(STD_OUTPUT_HANDLE)
63 info = CONSOLE_SCREEN_BUFFER_INFO()
64 ctypes.windll.kernel32.GetConsoleScreenBufferInfo(
65 handle, ctypes.byref(info))
66 # Substract one from the width, otherwise the cursor wraps
67 # and the ending \n causes an empty line to display.
68 return info.dwSize.Y, info.dwSize.X - 1
69
70 def get_terminal_width():
71 try:
72 height, width = _getdimensions()
73 except (SystemExit, KeyboardInterrupt), e:
74 raise
75 except:
76 # FALLBACK
77 width = int(os.environ.get('COLUMNS', 80))-1
78 # XXX the windows getdimensions may be bogus, let's sanify a bit
79 width = max(width, 40) # we alaways need 40 chars
80 return width
81
82 terminal_width = get_terminal_width()
83
84 # XXX unify with _escaped func below
85 def ansi_print(text, esc, file=None, newline=True, flush=False):
86 if file is None:
87 file = sys.stderr
88 text = text.rstrip()
89 if esc and not isinstance(esc, tuple):
90 esc = (esc,)
91 if esc and sys.platform != "win32" and file.isatty():
92 text = (''.join(['\x1b[%sm' % cod for cod in esc]) +
93 text +
94 '\x1b[0m') # ANSI color code "reset"
95 if newline:
96 text += '\n'
97
98 if esc and sys.platform == "win32" and file.isatty():
99 if 1 in esc:
100 bold = True
101 esc = tuple([x for x in esc if x != 1])
102 else:
103 bold = False
104 esctable = {() : FOREGROUND_WHITE, # normal
105 (31,): FOREGROUND_RED, # red
106 (32,): FOREGROUND_GREEN, # green
107 (33,): FOREGROUND_GREEN|FOREGROUND_RED, # yellow
108 (34,): FOREGROUND_BLUE, # blue
109 (35,): FOREGROUND_BLUE|FOREGROUND_RED, # purple
110 (36,): FOREGROUND_BLUE|FOREGROUND_GREEN, # cyan
111 (37,): FOREGROUND_WHITE, # white
112 (39,): FOREGROUND_WHITE, # reset
113 }
114 attr = esctable.get(esc, FOREGROUND_WHITE)
115 if bold:
116 attr |= FOREGROUND_INTENSITY
117 STD_OUTPUT_HANDLE = -11
118 STD_ERROR_HANDLE = -12
119 if file is sys.stderr:
120 handle = GetStdHandle(STD_ERROR_HANDLE)
121 else:
122 handle = GetStdHandle(STD_OUTPUT_HANDLE)
123 SetConsoleTextAttribute(handle, attr)
124 file.write(text)
125 SetConsoleTextAttribute(handle, FOREGROUND_WHITE)
126 else:
127 file.write(text)
128
129 if flush:
130 file.flush()
131
132 def should_do_markup(file):
133 return hasattr(file, 'isatty') and file.isatty() \
134 and os.environ.get('TERM') != 'dumb'
135
136 class TerminalWriter(object):
137 _esctable = dict(black=30, red=31, green=32, yellow=33,
138 blue=34, purple=35, cyan=36, white=37,
139 Black=40, Red=41, Green=42, Yellow=43,
140 Blue=44, Purple=45, Cyan=46, White=47,
141 bold=1, light=2, blink=5, invert=7)
142
143 def __init__(self, file=None, stringio=False):
144 if file is None:
145 if stringio:
146 self.stringio = file = std.cStringIO.StringIO()
147 else:
148 file = std.sys.stdout
149 elif callable(file):
150 file = WriteFile(file)
151 self._file = file
152 self.fullwidth = get_terminal_width()
153 self.hasmarkup = should_do_markup(file)
154
155 def _escaped(self, text, esc):
156 if esc and self.hasmarkup:
157 text = (''.join(['\x1b[%sm' % cod for cod in esc]) +
158 text +'\x1b[0m')
159 return text
160
161 def markup(self, text, **kw):
162 esc = []
163 for name in kw:
164 if name not in self._esctable:
165 raise ValueError("unknown markup: %r" %(name,))
166 if kw[name]:
167 esc.append(self._esctable[name])
168 return self._escaped(text, tuple(esc))
169
170 def sep(self, sepchar, title=None, fullwidth=None, **kw):
171 if fullwidth is None:
172 fullwidth = self.fullwidth
173 # the goal is to have the line be as long as possible
174 # under the condition that len(line) <= fullwidth
175 if title is not None:
176 # we want 2 + 2*len(fill) + len(title) <= fullwidth
177 # i.e. 2 + 2*len(sepchar)*N + len(title) <= fullwidth
178 # 2*len(sepchar)*N <= fullwidth - len(title) - 2
179 # N <= (fullwidth - len(title) - 2) // (2*len(sepchar))
180 N = (fullwidth - len(title) - 2) // (2*len(sepchar))
181 fill = sepchar * N
182 line = "%s %s %s" % (fill, title, fill)
183 else:
184 # we want len(sepchar)*N <= fullwidth
185 # i.e. N <= fullwidth // len(sepchar)
186 line = sepchar * (fullwidth // len(sepchar))
187 # in some situations there is room for an extra sepchar at the right,
188 # in particular if we consider that with a sepchar like "_ " the
189 # trailing space is not important at the end of the line
190 if len(line) + len(sepchar.rstrip()) <= fullwidth:
191 line += sepchar.rstrip()
192
193 self.line(line, **kw)
194
195 def write(self, s, **kw):
196 if s:
197 s = str(s)
198 if self.hasmarkup and kw:
199 s = self.markup(s, **kw)
200 self._file.write(s)
201 self._file.flush()
202
203 def line(self, s='', **kw):
204 self.write(s, **kw)
205 self.write('\n')
206
207 class Win32ConsoleWriter(object):
208
209 def __init__(self, file=None, stringio=False):
210 if file is None:
211 if stringio:
212 self.stringio = file = std.cStringIO.StringIO()
213 else:
214 file = std.sys.stdout
215 elif callable(file):
216 file = WriteFile(file)
217 self._file = file
218 self.fullwidth = get_terminal_width()
219 self.hasmarkup = should_do_markup(file)
220
221 def sep(self, sepchar, title=None, fullwidth=None, **kw):
222 if fullwidth is None:
223 fullwidth = self.fullwidth
224 # the goal is to have the line be as long as possible
225 # under the condition that len(line) <= fullwidth
226 if title is not None:
227 # we want 2 + 2*len(fill) + len(title) <= fullwidth
228 # i.e. 2 + 2*len(sepchar)*N + len(title) <= fullwidth
229 # 2*len(sepchar)*N <= fullwidth - len(title) - 2
230 # N <= (fullwidth - len(title) - 2) // (2*len(sepchar))
231 N = (fullwidth - len(title) - 2) // (2*len(sepchar))
232 fill = sepchar * N
233 line = "%s %s %s" % (fill, title, fill)
234 else:
235 # we want len(sepchar)*N <= fullwidth
236 # i.e. N <= fullwidth // len(sepchar)
237 line = sepchar * (fullwidth // len(sepchar))
238 # in some situations there is room for an extra sepchar at the right,
239 # in particular if we consider that with a sepchar like "_ " the
240 # trailing space is not important at the end of the line
241 if len(line) + len(sepchar.rstrip()) <= fullwidth:
242 line += sepchar.rstrip()
243
244 self.line(line, **kw)
245
246 def write(self, s, **kw):
247 if s:
248 s = str(s)
249 if self.hasmarkup:
250 handle = GetStdHandle(STD_OUTPUT_HANDLE)
251
252 if self.hasmarkup and kw:
253 attr = 0
254 if kw.pop('bold', False):
255 attr |= FOREGROUND_INTENSITY
256
257 if kw.pop('red', False):
258 attr |= FOREGROUND_RED
259 elif kw.pop('blue', False):
260 attr |= FOREGROUND_BLUE
261 elif kw.pop('green', False):
262 attr |= FOREGROUND_GREEN
263 else:
264 attr |= FOREGROUND_WHITE
265
266 SetConsoleTextAttribute(handle, attr)
267 self._file.write(s)
268 self._file.flush()
269 if self.hasmarkup:
270 SetConsoleTextAttribute(handle, FOREGROUND_WHITE)
271
272 def line(self, s='', **kw):
273 self.write(s + '\n', **kw)
274
275 if sys.platform == 'win32':
276 TerminalWriter = Win32ConsoleWriter
277
278 class WriteFile(object):
279 def __init__(self, writemethod):
280 self.write = writemethod
281 def flush(self):
282 return
283
284