Extract Resources in its own module
This commit is contained in:
Romain Failliot
parent
1402e97424
commit
6f4a5f3250
17
.pylintrc
17
.pylintrc
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@ -87,23 +87,24 @@ disable=raw-checker-failed,
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deprecated-pragma,
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use-symbolic-message-instead,
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# temporary silenced messages
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# temporary silenced messages (ordered alphabetically)
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duplicate-code,
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fixme,
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import-error,
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invalid-name,
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missing-module-docstring,
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missing-class-docstring,
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missing-function-docstring,
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import-error,
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missing-module-docstring,
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no-self-use,
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too-few-public-methods,
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too-many-arguments,
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too-many-branches,
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too-many-instance-attributes,
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too-many-locals,
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too-many-statements,
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too-many-nested-blocks,
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too-few-public-methods,
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unused-argument,
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fixme,
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too-many-statements,
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unnecessary-dict-index-lookup,
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duplicate-code
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unused-argument
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# Enable the message, report, category or checker with the given id(s). You can
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# either give multiple identifier separated by comma (,) or put this option
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501
src/main.py
501
src/main.py
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@ -44,508 +44,15 @@ from urllib.parse import urlparse
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from diffuse import utils
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from diffuse import constants
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from diffuse.resources import Resources
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from diffuse.vcs.vcs_registry import VcsRegistry
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# avoid some dictionary lookups when string.whitespace is used in loops
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# this is sorted based upon frequency to speed up code for stripping whitespace
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whitespace = ' \t\n\r\x0b\x0c'
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# colour resources
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class Colour:
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def __init__(self, r, g, b, a=1.0):
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# the individual colour components as floats in the range [0, 1]
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self.red = r
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self.green = g
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self.blue = b
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self.alpha = a
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# multiply by scalar
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def __mul__(self, s):
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return Colour(s * self.red, s * self.green, s * self.blue, s * self.alpha)
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# add colours
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def __add__(self, other):
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return Colour(self.red + other.red, self.green + other.green, self.blue + other.blue, self.alpha + other.alpha)
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# over operator
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def over(self, other):
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return self + other * (1 - self.alpha)
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# class to build and run a finite state machine for identifying syntax tokens
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class SyntaxParser:
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# create a new state machine that begins in initial_state and classifies
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# all characters not matched by the patterns as default_token_type
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def __init__(self, initial_state, default_token_type):
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# initial state for the state machine when parsing a new file
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self.initial_state = initial_state
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# default classification of characters that are not explicitly matched
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# by any state transition patterns
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self.default_token_type = default_token_type
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# mappings from a state to a list of (pattern, token_type, next_state)
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# tuples indicating the new state for the state machine when 'pattern'
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# is matched and how to classify the matched characters
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self.transitions_lookup = { initial_state : [] }
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# Adds a new edge to the finite state machine from prev_state to
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# next_state. Characters will be identified as token_type when pattern is
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# matched. Any newly referenced state will be added. Patterns for edges
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# leaving a state will be tested in the order they were added to the finite
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# state machine.
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def addPattern(self, prev_state, next_state, token_type, pattern):
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lookup = self.transitions_lookup
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for state in prev_state, next_state:
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if state not in lookup:
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lookup[state] = []
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lookup[prev_state].append([pattern, token_type, next_state])
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# given a string and an initial state, identify the final state and tokens
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def parse(self, state_name, s):
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lookup = self.transitions_lookup
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transitions, blocks, start = lookup[state_name], [], 0
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while start < len(s):
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for pattern, token_type, next_state in transitions:
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m = pattern.match(s, start)
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if m is not None:
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end, state_name = m.span()[1], next_state
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transitions = lookup[state_name]
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break
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else:
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end, token_type = start + 1, self.default_token_type
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if len(blocks) > 0 and blocks[-1][2] == token_type:
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blocks[-1][1] = end
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else:
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blocks.append([start, end, token_type])
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start = end
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return state_name, blocks
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def readconfiglines(fd):
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return fd.read().replace('\r', '').split('\n')
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# This class to hold all customisable behaviour not exposed in the preferences
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# dialogue: hotkey assignment, colours, syntax highlighting, etc.
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# Syntax highlighting is implemented in supporting '*.syntax' files normally
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# read from the system wide initialisation file '/etc/diffuserc'.
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# The personal initialisation file '~/diffuse/diffuserc' can be used to change
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# default behaviour.
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class Resources:
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def __init__(self):
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# default keybindings
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self.keybindings = {}
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self.keybindings_lookup = {}
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set_binding = self.setKeyBinding
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set_binding('menu', 'open_file', 'Ctrl+o')
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set_binding('menu', 'open_file_in_new_tab', 'Ctrl+t')
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set_binding('menu', 'open_modified_files', 'Shift+Ctrl+O')
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set_binding('menu', 'open_commit', 'Shift+Ctrl+T')
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set_binding('menu', 'reload_file', 'Shift+Ctrl+R')
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set_binding('menu', 'save_file', 'Ctrl+s')
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set_binding('menu', 'save_file_as', 'Shift+Ctrl+A')
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set_binding('menu', 'save_all', 'Shift+Ctrl+S')
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set_binding('menu', 'new_2_way_file_merge', 'Ctrl+2')
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set_binding('menu', 'new_3_way_file_merge', 'Ctrl+3')
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set_binding('menu', 'new_n_way_file_merge', 'Ctrl+4')
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set_binding('menu', 'close_tab', 'Ctrl+w')
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set_binding('menu', 'undo_close_tab', 'Shift+Ctrl+W')
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set_binding('menu', 'quit', 'Ctrl+q')
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set_binding('menu', 'undo', 'Ctrl+z')
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set_binding('menu', 'redo', 'Shift+Ctrl+Z')
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set_binding('menu', 'cut', 'Ctrl+x')
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set_binding('menu', 'copy', 'Ctrl+c')
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set_binding('menu', 'paste', 'Ctrl+v')
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set_binding('menu', 'select_all', 'Ctrl+a')
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set_binding('menu', 'clear_edits', 'Ctrl+r')
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set_binding('menu', 'dismiss_all_edits', 'Ctrl+d')
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set_binding('menu', 'find', 'Ctrl+f')
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set_binding('menu', 'find_next', 'Ctrl+g')
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set_binding('menu', 'find_previous', 'Shift+Ctrl+G')
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set_binding('menu', 'go_to_line', 'Shift+Ctrl+L')
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set_binding('menu', 'realign_all', 'Ctrl+l')
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set_binding('menu', 'isolate', 'Ctrl+i')
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set_binding('menu', 'first_difference', 'Shift+Ctrl+Up')
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set_binding('menu', 'previous_difference', 'Ctrl+Up')
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set_binding('menu', 'next_difference', 'Ctrl+Down')
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set_binding('menu', 'last_difference', 'Shift+Ctrl+Down')
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set_binding('menu', 'first_tab', 'Shift+Ctrl+Page_Up')
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set_binding('menu', 'previous_tab', 'Ctrl+Page_Up')
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set_binding('menu', 'next_tab', 'Ctrl+Page_Down')
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set_binding('menu', 'last_tab', 'Shift+Ctrl+Page_Down')
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set_binding('menu', 'shift_pane_right', 'Shift+Ctrl+parenright')
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set_binding('menu', 'shift_pane_left', 'Shift+Ctrl+parenleft')
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set_binding('menu', 'convert_to_upper_case', 'Ctrl+u')
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set_binding('menu', 'convert_to_lower_case', 'Shift+Ctrl+U')
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set_binding('menu', 'sort_lines_in_ascending_order', 'Ctrl+y')
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set_binding('menu', 'sort_lines_in_descending_order', 'Shift+Ctrl+Y')
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set_binding('menu', 'remove_trailing_white_space', 'Ctrl+k')
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set_binding('menu', 'convert_tabs_to_spaces', 'Ctrl+b')
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set_binding('menu', 'convert_leading_spaces_to_tabs', 'Shift+Ctrl+B')
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set_binding('menu', 'increase_indenting', 'Shift+Ctrl+greater')
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set_binding('menu', 'decrease_indenting', 'Shift+Ctrl+less')
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set_binding('menu', 'convert_to_dos', 'Shift+Ctrl+E')
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set_binding('menu', 'convert_to_mac', 'Shift+Ctrl+C')
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set_binding('menu', 'convert_to_unix', 'Ctrl+e')
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set_binding('menu', 'copy_selection_right', 'Shift+Ctrl+Right')
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set_binding('menu', 'copy_selection_left', 'Shift+Ctrl+Left')
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set_binding('menu', 'copy_left_into_selection', 'Ctrl+Right')
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set_binding('menu', 'copy_right_into_selection', 'Ctrl+Left')
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set_binding('menu', 'merge_from_left_then_right', 'Ctrl+m')
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set_binding('menu', 'merge_from_right_then_left', 'Shift+Ctrl+M')
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set_binding('menu', 'help_contents', 'F1')
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set_binding('line_mode', 'enter_align_mode', 'space')
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set_binding('line_mode', 'enter_character_mode', 'Return')
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set_binding('line_mode', 'enter_character_mode', 'KP_Enter')
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set_binding('line_mode', 'first_line', 'Home')
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set_binding('line_mode', 'first_line', 'g')
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set_binding('line_mode', 'extend_first_line', 'Shift+Home')
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set_binding('line_mode', 'last_line', 'End')
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set_binding('line_mode', 'last_line', 'Shift+G')
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set_binding('line_mode', 'extend_last_line', 'Shift+End')
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set_binding('line_mode', 'up', 'Up')
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set_binding('line_mode', 'up', 'k')
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set_binding('line_mode', 'extend_up', 'Shift+Up')
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set_binding('line_mode', 'extend_up', 'Shift+K')
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set_binding('line_mode', 'down', 'Down')
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set_binding('line_mode', 'down', 'j')
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set_binding('line_mode', 'extend_down', 'Shift+Down')
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set_binding('line_mode', 'extend_down', 'Shift+J')
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set_binding('line_mode', 'left', 'Left')
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set_binding('line_mode', 'left', 'h')
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set_binding('line_mode', 'extend_left', 'Shift+Left')
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set_binding('line_mode', 'right', 'Right')
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set_binding('line_mode', 'right', 'l')
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set_binding('line_mode', 'extend_right', 'Shift+Right')
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set_binding('line_mode', 'page_up', 'Page_Up')
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set_binding('line_mode', 'page_up', 'Ctrl+u')
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set_binding('line_mode', 'extend_page_up', 'Shift+Page_Up')
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set_binding('line_mode', 'extend_page_up', 'Shift+Ctrl+U')
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set_binding('line_mode', 'page_down', 'Page_Down')
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set_binding('line_mode', 'page_down', 'Ctrl+d')
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set_binding('line_mode', 'extend_page_down', 'Shift+Page_Down')
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set_binding('line_mode', 'extend_page_down', 'Shift+Ctrl+D')
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set_binding('line_mode', 'delete_text', 'BackSpace')
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set_binding('line_mode', 'delete_text', 'Delete')
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set_binding('line_mode', 'delete_text', 'x')
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set_binding('line_mode', 'clear_edits', 'r')
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set_binding('line_mode', 'isolate', 'i')
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set_binding('line_mode', 'first_difference', 'Ctrl+Home')
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set_binding('line_mode', 'first_difference', 'Shift+P')
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set_binding('line_mode', 'previous_difference', 'p')
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set_binding('line_mode', 'next_difference', 'n')
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set_binding('line_mode', 'last_difference', 'Ctrl+End')
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set_binding('line_mode', 'last_difference', 'Shift+N')
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#set_binding('line_mode', 'copy_selection_right', 'Shift+L')
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#set_binding('line_mode', 'copy_selection_left', 'Shift+H')
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set_binding('line_mode', 'copy_left_into_selection', 'Shift+L')
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set_binding('line_mode', 'copy_right_into_selection', 'Shift+H')
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set_binding('line_mode', 'merge_from_left_then_right', 'm')
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set_binding('line_mode', 'merge_from_right_then_left', 'Shift+M')
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set_binding('align_mode', 'enter_line_mode', 'Escape')
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set_binding('align_mode', 'align', 'space')
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set_binding('align_mode', 'enter_character_mode', 'Return')
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set_binding('align_mode', 'enter_character_mode', 'KP_Enter')
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set_binding('align_mode', 'first_line', 'g')
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set_binding('align_mode', 'last_line', 'Shift+G')
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set_binding('align_mode', 'up', 'Up')
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set_binding('align_mode', 'up', 'k')
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set_binding('align_mode', 'down', 'Down')
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set_binding('align_mode', 'down', 'j')
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set_binding('align_mode', 'left', 'Left')
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set_binding('align_mode', 'left', 'h')
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set_binding('align_mode', 'right', 'Right')
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set_binding('align_mode', 'right', 'l')
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set_binding('align_mode', 'page_up', 'Page_Up')
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set_binding('align_mode', 'page_up', 'Ctrl+u')
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set_binding('align_mode', 'page_down', 'Page_Down')
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set_binding('align_mode', 'page_down', 'Ctrl+d')
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set_binding('character_mode', 'enter_line_mode', 'Escape')
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# default colours
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self.colours = {
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'alignment' : Colour(1.0, 1.0, 0.0),
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'character_selection' : Colour(0.7, 0.7, 1.0),
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'cursor' : Colour(0.0, 0.0, 0.0),
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'difference_1' : Colour(1.0, 0.625, 0.625),
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'difference_2' : Colour(0.85, 0.625, 0.775),
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'difference_3' : Colour(0.85, 0.775, 0.625),
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'hatch' : Colour(0.8, 0.8, 0.8),
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'line_number' : Colour(0.0, 0.0, 0.0),
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'line_number_background' : Colour(0.75, 0.75, 0.75),
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'line_selection' : Colour(0.7, 0.7, 1.0),
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'map_background' : Colour(0.6, 0.6, 0.6),
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'margin' : Colour(0.8, 0.8, 0.8),
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'edited' : Colour(0.5, 1.0, 0.5),
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'preedit' : Colour(0.0, 0.0, 0.0),
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'text' : Colour(0.0, 0.0, 0.0),
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'text_background' : Colour(1.0, 1.0, 1.0) }
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# default floats
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self.floats = {
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'alignment_opacity' : 1.0,
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'character_difference_opacity' : 0.4,
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'character_selection_opacity' : 0.4,
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'edited_opacity' : 0.4,
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'line_difference_opacity' : 0.3,
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'line_selection_opacity' : 0.4 }
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# default strings
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self.strings = {}
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# syntax highlighting support
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self.syntaxes = {}
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self.syntax_file_patterns = {}
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self.syntax_magic_patterns = {}
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self.current_syntax = None
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# list of imported resources files (we only import each file once)
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self.resource_files = set()
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# special string resources
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self.setDifferenceColours('difference_1 difference_2 difference_3')
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# keyboard action processing
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def setKeyBinding(self, ctx, s, v):
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action_tuple = (ctx, s)
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modifiers = Gdk.ModifierType(0)
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key = None
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for token in v.split('+'):
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if token == 'Shift':
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modifiers |= Gdk.ModifierType.SHIFT_MASK
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elif token == 'Ctrl':
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modifiers |= Gdk.ModifierType.CONTROL_MASK
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elif token == 'Alt':
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modifiers |= Gdk.ModifierType.MOD1_MASK
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elif len(token) == 0 or token[0] == '_':
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raise ValueError()
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else:
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token = 'KEY_' + token
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if not hasattr(Gdk, token):
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raise ValueError()
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key = getattr(Gdk, token)
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if key is None:
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raise ValueError()
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key_tuple = (ctx, (key, modifiers))
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# remove any existing binding
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if key_tuple in self.keybindings_lookup:
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self._removeKeyBinding(key_tuple)
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# ensure we have a set to hold this action
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if action_tuple not in self.keybindings:
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self.keybindings[action_tuple] = {}
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bindings = self.keybindings[action_tuple]
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# menu items can only have one binding
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if ctx == 'menu':
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for k in bindings.keys():
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self._removeKeyBinding(k)
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# add the binding
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bindings[key_tuple] = None
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self.keybindings_lookup[key_tuple] = action_tuple
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def _removeKeyBinding(self, key_tuple):
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action_tuple = self.keybindings_lookup[key_tuple]
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del self.keybindings_lookup[key_tuple]
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del self.keybindings[action_tuple][key_tuple]
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def getActionForKey(self, ctx, key, modifiers):
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try:
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return self.keybindings_lookup[(ctx, (key, modifiers))][1]
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except KeyError:
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pass
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def getKeyBindings(self, ctx, s):
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try:
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return [ t for c, t in self.keybindings[(ctx, s)].keys() ]
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except KeyError:
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return []
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# colours used for indicating differences
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def setDifferenceColours(self, s):
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colours = s.split()
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if len(colours) > 0:
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self.difference_colours = colours
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def getDifferenceColour(self, i):
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n = len(self.difference_colours)
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return self.getColour(self.difference_colours[(i + n - 1) % n])
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# colour resources
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def getColour(self, symbol):
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try:
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return self.colours[symbol]
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except KeyError:
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utils.logDebug(f'Warning: unknown colour "{symbol}"')
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self.colours[symbol] = v = Colour(0.0, 0.0, 0.0)
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return v
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# float resources
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def getFloat(self, symbol):
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try:
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return self.floats[symbol]
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except KeyError:
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utils.logDebug(f'Warning: unknown float "{symbol}"')
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self.floats[symbol] = v = 0.5
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return v
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# string resources
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def getString(self, symbol):
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try:
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return self.strings[symbol]
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except KeyError:
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utils.logDebug(f'Warning: unknown string "{symbol}"')
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self.strings[symbol] = v = ''
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return v
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# syntax highlighting
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def getSyntaxNames(self):
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return list(self.syntaxes.keys())
|
||||
|
||||
def getSyntax(self, name):
|
||||
return self.syntaxes.get(name, None)
|
||||
|
||||
def guessSyntaxForFile(self, name, ss):
|
||||
name = os.path.basename(name)
|
||||
for key, pattern in self.syntax_file_patterns.items():
|
||||
if pattern.search(name):
|
||||
return key
|
||||
# fallback to analysing the first line of the file
|
||||
if len(ss) > 0:
|
||||
s = ss[0]
|
||||
for key, pattern in self.syntax_magic_patterns.items():
|
||||
if pattern.search(s):
|
||||
return key
|
||||
|
||||
# parse resource files
|
||||
def parse(self, file_name):
|
||||
# only process files once
|
||||
if file_name in self.resource_files:
|
||||
return
|
||||
|
||||
self.resource_files.add(file_name)
|
||||
f = open(file_name, 'r')
|
||||
ss = readconfiglines(f)
|
||||
f.close()
|
||||
|
||||
# FIXME: improve validation
|
||||
for i, s in enumerate(ss):
|
||||
args = shlex.split(s, True)
|
||||
if len(args) == 0:
|
||||
continue
|
||||
|
||||
try:
|
||||
# eg. add Python syntax highlighting:
|
||||
# import /usr/share/diffuse/syntax/python.syntax
|
||||
if args[0] == 'import' and len(args) == 2:
|
||||
path = os.path.expanduser(args[1])
|
||||
# relative paths are relative to the parsed file
|
||||
path = os.path.join(utils.globEscape(os.path.dirname(file_name)), path)
|
||||
paths = glob.glob(path)
|
||||
if len(paths) == 0:
|
||||
paths = [ path ]
|
||||
for path in paths:
|
||||
# convert to absolute path so the location of
|
||||
# any processing errors are reported with
|
||||
# normalised file names
|
||||
self.parse(os.path.abspath(path))
|
||||
# eg. make Ctrl+o trigger the open_file menu item
|
||||
# keybinding menu open_file Ctrl+o
|
||||
elif args[0] == 'keybinding' and len(args) == 4:
|
||||
self.setKeyBinding(args[1], args[2], args[3])
|
||||
# eg. set the regular background colour to white
|
||||
# colour text_background 1.0 1.0 1.0
|
||||
elif args[0] in [ 'colour', 'color' ] and len(args) == 5:
|
||||
self.colours[args[1]] = Colour(float(args[2]), float(args[3]), float(args[4]))
|
||||
# eg. set opacity of the line_selection colour
|
||||
# float line_selection_opacity 0.4
|
||||
elif args[0] == 'float' and len(args) == 3:
|
||||
self.floats[args[1]] = float(args[2])
|
||||
# eg. set the help browser
|
||||
# string help_browser gnome-help
|
||||
elif args[0] == 'string' and len(args) == 3:
|
||||
self.strings[args[1]] = args[2]
|
||||
if args[1] == 'difference_colours':
|
||||
self.setDifferenceColours(args[2])
|
||||
# eg. start a syntax specification for Python
|
||||
# syntax Python normal text
|
||||
# where 'normal' is the name of the default state and
|
||||
# 'text' is the classification of all characters not
|
||||
# explicitly matched by a syntax highlighting rule
|
||||
elif args[0] == 'syntax' and (len(args) == 2 or len(args) == 4):
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove file pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_file_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
# remove magic pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_magic_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
# remove a syntax specification
|
||||
self.current_syntax = None
|
||||
try:
|
||||
del self.syntaxes[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
self.current_syntax = SyntaxParser(args[2], args[3])
|
||||
self.syntaxes[key] = self.current_syntax
|
||||
# eg. transition from state 'normal' to 'comment' when
|
||||
# the pattern '#' is matched and classify the matched
|
||||
# characters as 'python_comment'
|
||||
# syntax_pattern normal comment python_comment '#'
|
||||
elif args[0] == 'syntax_pattern' and self.current_syntax is not None and len(args) >= 5:
|
||||
flags = 0
|
||||
for arg in args[5:]:
|
||||
if arg == 'ignorecase':
|
||||
flags |= re.IGNORECASE
|
||||
else:
|
||||
raise ValueError()
|
||||
self.current_syntax.addPattern(args[1], args[2], args[3], re.compile(args[4], flags))
|
||||
# eg. default to the Python syntax rules when viewing
|
||||
# a file ending with '.py' or '.pyw'
|
||||
# syntax_files Python '\.pyw?$'
|
||||
elif args[0] == 'syntax_files' and (len(args) == 2 or len(args) == 3):
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove file pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_file_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
flags = 0
|
||||
if utils.isWindows():
|
||||
flags |= re.IGNORECASE
|
||||
self.syntax_file_patterns[key] = re.compile(args[2], flags)
|
||||
# eg. default to the Python syntax rules when viewing
|
||||
# a files starting with patterns like #!/usr/bin/python
|
||||
# syntax_magic Python '^#!/usr/bin/python$'
|
||||
elif args[0] == 'syntax_magic' and len(args) > 1:
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove magic pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_magic_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
flags = 0
|
||||
for arg in args[3:]:
|
||||
if arg == 'ignorecase':
|
||||
flags |= re.IGNORECASE
|
||||
else:
|
||||
raise ValueError()
|
||||
self.syntax_magic_patterns[key] = re.compile(args[2], flags)
|
||||
else:
|
||||
raise ValueError()
|
||||
except: # Grr... the 're' module throws weird errors
|
||||
#except ValueError:
|
||||
utils.logError(_('Error processing line %(line)d of %(file)s.') % { 'line': i + 1, 'file': file_name })
|
||||
|
||||
theResources = Resources()
|
||||
theVCSs = VcsRegistry()
|
||||
|
||||
# map an encoding name to its standard form
|
||||
def norm_encoding(e):
|
||||
|
|
@ -761,7 +268,7 @@ class Preferences:
|
|||
if os.path.isfile(self.path):
|
||||
try:
|
||||
f = open(self.path, 'r')
|
||||
ss = readconfiglines(f)
|
||||
ss = utils.readconfiglines(f)
|
||||
f.close()
|
||||
for j, s in enumerate(ss):
|
||||
try:
|
||||
|
|
@ -1117,8 +624,6 @@ def convert_to_format(s, format):
|
|||
s += '\r'
|
||||
return s
|
||||
|
||||
theVCSs = VcsRegistry()
|
||||
|
||||
# utility method to step advance an adjustment
|
||||
def step_adjustment(adj, delta):
|
||||
v = adj.get_value() + delta
|
||||
|
|
|
|||
|
|
@ -33,6 +33,7 @@ configure_file(
|
|||
diffuse_sources = [
|
||||
'__init__.py',
|
||||
'main.py',
|
||||
'resources.py',
|
||||
'utils.py',
|
||||
]
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,537 @@
|
|||
# Diffuse: a graphical tool for merging and comparing text files.
|
||||
#
|
||||
# Copyright (C) 2019 Derrick Moser <derrick_moser@yahoo.com>
|
||||
# Copyright (C) 2021 Romain Failliot <romain.failliot@foolstep.com>
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 2 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License along
|
||||
# with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
|
||||
# This class to hold all customisable behaviour not exposed in the preferences
|
||||
# dialogue: hotkey assignment, colours, syntax highlighting, etc.
|
||||
# Syntax highlighting is implemented in supporting '*.syntax' files normally
|
||||
# read from the system wide initialisation file '/etc/diffuserc'.
|
||||
# The personal initialisation file '~/diffuse/diffuserc' can be used to change
|
||||
# default behaviour.
|
||||
|
||||
import glob
|
||||
import os
|
||||
import re
|
||||
import shlex
|
||||
|
||||
# pylint: disable=wrong-import-position
|
||||
import gi
|
||||
gi.require_version('Gdk', '3.0')
|
||||
from gi.repository import Gdk
|
||||
# pylint: enable=wrong-import-position
|
||||
|
||||
from diffuse import utils
|
||||
|
||||
class Resources:
|
||||
def __init__(self):
|
||||
# default keybindings
|
||||
self.keybindings = {}
|
||||
self.keybindings_lookup = {}
|
||||
set_binding = self.setKeyBinding
|
||||
set_binding('menu', 'open_file', 'Ctrl+o')
|
||||
set_binding('menu', 'open_file_in_new_tab', 'Ctrl+t')
|
||||
set_binding('menu', 'open_modified_files', 'Shift+Ctrl+O')
|
||||
set_binding('menu', 'open_commit', 'Shift+Ctrl+T')
|
||||
set_binding('menu', 'reload_file', 'Shift+Ctrl+R')
|
||||
set_binding('menu', 'save_file', 'Ctrl+s')
|
||||
set_binding('menu', 'save_file_as', 'Shift+Ctrl+A')
|
||||
set_binding('menu', 'save_all', 'Shift+Ctrl+S')
|
||||
set_binding('menu', 'new_2_way_file_merge', 'Ctrl+2')
|
||||
set_binding('menu', 'new_3_way_file_merge', 'Ctrl+3')
|
||||
set_binding('menu', 'new_n_way_file_merge', 'Ctrl+4')
|
||||
set_binding('menu', 'close_tab', 'Ctrl+w')
|
||||
set_binding('menu', 'undo_close_tab', 'Shift+Ctrl+W')
|
||||
set_binding('menu', 'quit', 'Ctrl+q')
|
||||
set_binding('menu', 'undo', 'Ctrl+z')
|
||||
set_binding('menu', 'redo', 'Shift+Ctrl+Z')
|
||||
set_binding('menu', 'cut', 'Ctrl+x')
|
||||
set_binding('menu', 'copy', 'Ctrl+c')
|
||||
set_binding('menu', 'paste', 'Ctrl+v')
|
||||
set_binding('menu', 'select_all', 'Ctrl+a')
|
||||
set_binding('menu', 'clear_edits', 'Ctrl+r')
|
||||
set_binding('menu', 'dismiss_all_edits', 'Ctrl+d')
|
||||
set_binding('menu', 'find', 'Ctrl+f')
|
||||
set_binding('menu', 'find_next', 'Ctrl+g')
|
||||
set_binding('menu', 'find_previous', 'Shift+Ctrl+G')
|
||||
set_binding('menu', 'go_to_line', 'Shift+Ctrl+L')
|
||||
set_binding('menu', 'realign_all', 'Ctrl+l')
|
||||
set_binding('menu', 'isolate', 'Ctrl+i')
|
||||
set_binding('menu', 'first_difference', 'Shift+Ctrl+Up')
|
||||
set_binding('menu', 'previous_difference', 'Ctrl+Up')
|
||||
set_binding('menu', 'next_difference', 'Ctrl+Down')
|
||||
set_binding('menu', 'last_difference', 'Shift+Ctrl+Down')
|
||||
set_binding('menu', 'first_tab', 'Shift+Ctrl+Page_Up')
|
||||
set_binding('menu', 'previous_tab', 'Ctrl+Page_Up')
|
||||
set_binding('menu', 'next_tab', 'Ctrl+Page_Down')
|
||||
set_binding('menu', 'last_tab', 'Shift+Ctrl+Page_Down')
|
||||
set_binding('menu', 'shift_pane_right', 'Shift+Ctrl+parenright')
|
||||
set_binding('menu', 'shift_pane_left', 'Shift+Ctrl+parenleft')
|
||||
set_binding('menu', 'convert_to_upper_case', 'Ctrl+u')
|
||||
set_binding('menu', 'convert_to_lower_case', 'Shift+Ctrl+U')
|
||||
set_binding('menu', 'sort_lines_in_ascending_order', 'Ctrl+y')
|
||||
set_binding('menu', 'sort_lines_in_descending_order', 'Shift+Ctrl+Y')
|
||||
set_binding('menu', 'remove_trailing_white_space', 'Ctrl+k')
|
||||
set_binding('menu', 'convert_tabs_to_spaces', 'Ctrl+b')
|
||||
set_binding('menu', 'convert_leading_spaces_to_tabs', 'Shift+Ctrl+B')
|
||||
set_binding('menu', 'increase_indenting', 'Shift+Ctrl+greater')
|
||||
set_binding('menu', 'decrease_indenting', 'Shift+Ctrl+less')
|
||||
set_binding('menu', 'convert_to_dos', 'Shift+Ctrl+E')
|
||||
set_binding('menu', 'convert_to_mac', 'Shift+Ctrl+C')
|
||||
set_binding('menu', 'convert_to_unix', 'Ctrl+e')
|
||||
set_binding('menu', 'copy_selection_right', 'Shift+Ctrl+Right')
|
||||
set_binding('menu', 'copy_selection_left', 'Shift+Ctrl+Left')
|
||||
set_binding('menu', 'copy_left_into_selection', 'Ctrl+Right')
|
||||
set_binding('menu', 'copy_right_into_selection', 'Ctrl+Left')
|
||||
set_binding('menu', 'merge_from_left_then_right', 'Ctrl+m')
|
||||
set_binding('menu', 'merge_from_right_then_left', 'Shift+Ctrl+M')
|
||||
set_binding('menu', 'help_contents', 'F1')
|
||||
set_binding('line_mode', 'enter_align_mode', 'space')
|
||||
set_binding('line_mode', 'enter_character_mode', 'Return')
|
||||
set_binding('line_mode', 'enter_character_mode', 'KP_Enter')
|
||||
set_binding('line_mode', 'first_line', 'Home')
|
||||
set_binding('line_mode', 'first_line', 'g')
|
||||
set_binding('line_mode', 'extend_first_line', 'Shift+Home')
|
||||
set_binding('line_mode', 'last_line', 'End')
|
||||
set_binding('line_mode', 'last_line', 'Shift+G')
|
||||
set_binding('line_mode', 'extend_last_line', 'Shift+End')
|
||||
set_binding('line_mode', 'up', 'Up')
|
||||
set_binding('line_mode', 'up', 'k')
|
||||
set_binding('line_mode', 'extend_up', 'Shift+Up')
|
||||
set_binding('line_mode', 'extend_up', 'Shift+K')
|
||||
set_binding('line_mode', 'down', 'Down')
|
||||
set_binding('line_mode', 'down', 'j')
|
||||
set_binding('line_mode', 'extend_down', 'Shift+Down')
|
||||
set_binding('line_mode', 'extend_down', 'Shift+J')
|
||||
set_binding('line_mode', 'left', 'Left')
|
||||
set_binding('line_mode', 'left', 'h')
|
||||
set_binding('line_mode', 'extend_left', 'Shift+Left')
|
||||
set_binding('line_mode', 'right', 'Right')
|
||||
set_binding('line_mode', 'right', 'l')
|
||||
set_binding('line_mode', 'extend_right', 'Shift+Right')
|
||||
set_binding('line_mode', 'page_up', 'Page_Up')
|
||||
set_binding('line_mode', 'page_up', 'Ctrl+u')
|
||||
set_binding('line_mode', 'extend_page_up', 'Shift+Page_Up')
|
||||
set_binding('line_mode', 'extend_page_up', 'Shift+Ctrl+U')
|
||||
set_binding('line_mode', 'page_down', 'Page_Down')
|
||||
set_binding('line_mode', 'page_down', 'Ctrl+d')
|
||||
set_binding('line_mode', 'extend_page_down', 'Shift+Page_Down')
|
||||
set_binding('line_mode', 'extend_page_down', 'Shift+Ctrl+D')
|
||||
set_binding('line_mode', 'delete_text', 'BackSpace')
|
||||
set_binding('line_mode', 'delete_text', 'Delete')
|
||||
set_binding('line_mode', 'delete_text', 'x')
|
||||
set_binding('line_mode', 'clear_edits', 'r')
|
||||
set_binding('line_mode', 'isolate', 'i')
|
||||
set_binding('line_mode', 'first_difference', 'Ctrl+Home')
|
||||
set_binding('line_mode', 'first_difference', 'Shift+P')
|
||||
set_binding('line_mode', 'previous_difference', 'p')
|
||||
set_binding('line_mode', 'next_difference', 'n')
|
||||
set_binding('line_mode', 'last_difference', 'Ctrl+End')
|
||||
set_binding('line_mode', 'last_difference', 'Shift+N')
|
||||
#set_binding('line_mode', 'copy_selection_right', 'Shift+L')
|
||||
#set_binding('line_mode', 'copy_selection_left', 'Shift+H')
|
||||
set_binding('line_mode', 'copy_left_into_selection', 'Shift+L')
|
||||
set_binding('line_mode', 'copy_right_into_selection', 'Shift+H')
|
||||
set_binding('line_mode', 'merge_from_left_then_right', 'm')
|
||||
set_binding('line_mode', 'merge_from_right_then_left', 'Shift+M')
|
||||
set_binding('align_mode', 'enter_line_mode', 'Escape')
|
||||
set_binding('align_mode', 'align', 'space')
|
||||
set_binding('align_mode', 'enter_character_mode', 'Return')
|
||||
set_binding('align_mode', 'enter_character_mode', 'KP_Enter')
|
||||
set_binding('align_mode', 'first_line', 'g')
|
||||
set_binding('align_mode', 'last_line', 'Shift+G')
|
||||
set_binding('align_mode', 'up', 'Up')
|
||||
set_binding('align_mode', 'up', 'k')
|
||||
set_binding('align_mode', 'down', 'Down')
|
||||
set_binding('align_mode', 'down', 'j')
|
||||
set_binding('align_mode', 'left', 'Left')
|
||||
set_binding('align_mode', 'left', 'h')
|
||||
set_binding('align_mode', 'right', 'Right')
|
||||
set_binding('align_mode', 'right', 'l')
|
||||
set_binding('align_mode', 'page_up', 'Page_Up')
|
||||
set_binding('align_mode', 'page_up', 'Ctrl+u')
|
||||
set_binding('align_mode', 'page_down', 'Page_Down')
|
||||
set_binding('align_mode', 'page_down', 'Ctrl+d')
|
||||
set_binding('character_mode', 'enter_line_mode', 'Escape')
|
||||
|
||||
# default colours
|
||||
self.colours = {
|
||||
'alignment' : _Colour(1.0, 1.0, 0.0),
|
||||
'character_selection' : _Colour(0.7, 0.7, 1.0),
|
||||
'cursor' : _Colour(0.0, 0.0, 0.0),
|
||||
'difference_1' : _Colour(1.0, 0.625, 0.625),
|
||||
'difference_2' : _Colour(0.85, 0.625, 0.775),
|
||||
'difference_3' : _Colour(0.85, 0.775, 0.625),
|
||||
'hatch' : _Colour(0.8, 0.8, 0.8),
|
||||
'line_number' : _Colour(0.0, 0.0, 0.0),
|
||||
'line_number_background' : _Colour(0.75, 0.75, 0.75),
|
||||
'line_selection' : _Colour(0.7, 0.7, 1.0),
|
||||
'map_background' : _Colour(0.6, 0.6, 0.6),
|
||||
'margin' : _Colour(0.8, 0.8, 0.8),
|
||||
'edited' : _Colour(0.5, 1.0, 0.5),
|
||||
'preedit' : _Colour(0.0, 0.0, 0.0),
|
||||
'text' : _Colour(0.0, 0.0, 0.0),
|
||||
'text_background' : _Colour(1.0, 1.0, 1.0) }
|
||||
|
||||
# default floats
|
||||
self.floats = {
|
||||
'alignment_opacity' : 1.0,
|
||||
'character_difference_opacity' : 0.4,
|
||||
'character_selection_opacity' : 0.4,
|
||||
'edited_opacity' : 0.4,
|
||||
'line_difference_opacity' : 0.3,
|
||||
'line_selection_opacity' : 0.4 }
|
||||
|
||||
# default strings
|
||||
self.strings = {}
|
||||
|
||||
# syntax highlighting support
|
||||
self.syntaxes = {}
|
||||
self.syntax_file_patterns = {}
|
||||
self.syntax_magic_patterns = {}
|
||||
self.current_syntax = None
|
||||
|
||||
# list of imported resources files (we only import each file once)
|
||||
self.resource_files = set()
|
||||
|
||||
# special string resources
|
||||
self.setDifferenceColours('difference_1 difference_2 difference_3')
|
||||
|
||||
# keyboard action processing
|
||||
def setKeyBinding(self, ctx, s, v):
|
||||
action_tuple = (ctx, s)
|
||||
modifiers = Gdk.ModifierType(0)
|
||||
key = None
|
||||
for token in v.split('+'):
|
||||
if token == 'Shift':
|
||||
modifiers |= Gdk.ModifierType.SHIFT_MASK
|
||||
elif token == 'Ctrl':
|
||||
modifiers |= Gdk.ModifierType.CONTROL_MASK
|
||||
elif token == 'Alt':
|
||||
modifiers |= Gdk.ModifierType.MOD1_MASK
|
||||
elif len(token) == 0 or token[0] == '_':
|
||||
raise ValueError()
|
||||
else:
|
||||
token = 'KEY_' + token
|
||||
if not hasattr(Gdk, token):
|
||||
raise ValueError()
|
||||
key = getattr(Gdk, token)
|
||||
if key is None:
|
||||
raise ValueError()
|
||||
key_tuple = (ctx, (key, modifiers))
|
||||
|
||||
# remove any existing binding
|
||||
if key_tuple in self.keybindings_lookup:
|
||||
self._removeKeyBinding(key_tuple)
|
||||
|
||||
# ensure we have a set to hold this action
|
||||
if action_tuple not in self.keybindings:
|
||||
self.keybindings[action_tuple] = {}
|
||||
bindings = self.keybindings[action_tuple]
|
||||
|
||||
# menu items can only have one binding
|
||||
if ctx == 'menu':
|
||||
for k in bindings.keys():
|
||||
self._removeKeyBinding(k)
|
||||
|
||||
# add the binding
|
||||
bindings[key_tuple] = None
|
||||
self.keybindings_lookup[key_tuple] = action_tuple
|
||||
|
||||
def _removeKeyBinding(self, key_tuple):
|
||||
action_tuple = self.keybindings_lookup[key_tuple]
|
||||
del self.keybindings_lookup[key_tuple]
|
||||
del self.keybindings[action_tuple][key_tuple]
|
||||
|
||||
def getActionForKey(self, ctx, key, modifiers):
|
||||
try:
|
||||
return self.keybindings_lookup[(ctx, (key, modifiers))][1]
|
||||
except KeyError:
|
||||
return None
|
||||
|
||||
def getKeyBindings(self, ctx, s):
|
||||
try:
|
||||
return [ t for c, t in self.keybindings[(ctx, s)].keys() ]
|
||||
except KeyError:
|
||||
return []
|
||||
|
||||
# colours used for indicating differences
|
||||
def setDifferenceColours(self, s):
|
||||
colours = s.split()
|
||||
if len(colours) > 0:
|
||||
self.difference_colours = colours
|
||||
|
||||
def getDifferenceColour(self, i):
|
||||
n = len(self.difference_colours)
|
||||
return self.getColour(self.difference_colours[(i + n - 1) % n])
|
||||
|
||||
# colour resources
|
||||
def getColour(self, symbol):
|
||||
try:
|
||||
return self.colours[symbol]
|
||||
except KeyError:
|
||||
utils.logDebug(f'Warning: unknown colour "{symbol}"')
|
||||
self.colours[symbol] = v = _Colour(0.0, 0.0, 0.0)
|
||||
return v
|
||||
|
||||
# float resources
|
||||
def getFloat(self, symbol):
|
||||
try:
|
||||
return self.floats[symbol]
|
||||
except KeyError:
|
||||
utils.logDebug(f'Warning: unknown float "{symbol}"')
|
||||
self.floats[symbol] = v = 0.5
|
||||
return v
|
||||
|
||||
# string resources
|
||||
def getString(self, symbol):
|
||||
try:
|
||||
return self.strings[symbol]
|
||||
except KeyError:
|
||||
utils.logDebug(f'Warning: unknown string "{symbol}"')
|
||||
self.strings[symbol] = v = ''
|
||||
return v
|
||||
|
||||
# syntax highlighting
|
||||
def getSyntaxNames(self):
|
||||
return list(self.syntaxes.keys())
|
||||
|
||||
def getSyntax(self, name):
|
||||
return self.syntaxes.get(name, None)
|
||||
|
||||
def guessSyntaxForFile(self, name, ss):
|
||||
name = os.path.basename(name)
|
||||
for key, pattern in self.syntax_file_patterns.items():
|
||||
if pattern.search(name):
|
||||
return key
|
||||
# fallback to analysing the first line of the file
|
||||
if len(ss) > 0:
|
||||
s = ss[0]
|
||||
for key, pattern in self.syntax_magic_patterns.items():
|
||||
if pattern.search(s):
|
||||
return key
|
||||
return None
|
||||
|
||||
# parse resource files
|
||||
def parse(self, file_name):
|
||||
# only process files once
|
||||
if file_name in self.resource_files:
|
||||
return
|
||||
|
||||
self.resource_files.add(file_name)
|
||||
with open(file_name, 'r', encoding='utf-8') as f:
|
||||
ss = utils.readconfiglines(f)
|
||||
|
||||
# FIXME: improve validation
|
||||
for i, s in enumerate(ss):
|
||||
args = shlex.split(s, True)
|
||||
if len(args) == 0:
|
||||
continue
|
||||
|
||||
try:
|
||||
# eg. add Python syntax highlighting:
|
||||
# import /usr/share/diffuse/syntax/python.syntax
|
||||
if args[0] == 'import' and len(args) == 2:
|
||||
path = os.path.expanduser(args[1])
|
||||
# relative paths are relative to the parsed file
|
||||
path = os.path.join(utils.globEscape(os.path.dirname(file_name)), path)
|
||||
paths = glob.glob(path)
|
||||
if len(paths) == 0:
|
||||
paths = [ path ]
|
||||
for path in paths:
|
||||
# convert to absolute path so the location of
|
||||
# any processing errors are reported with
|
||||
# normalised file names
|
||||
self.parse(os.path.abspath(path))
|
||||
# eg. make Ctrl+o trigger the open_file menu item
|
||||
# keybinding menu open_file Ctrl+o
|
||||
elif args[0] == 'keybinding' and len(args) == 4:
|
||||
self.setKeyBinding(args[1], args[2], args[3])
|
||||
# eg. set the regular background colour to white
|
||||
# colour text_background 1.0 1.0 1.0
|
||||
elif args[0] in [ 'colour', 'color' ] and len(args) == 5:
|
||||
self.colours[args[1]] = _Colour(float(args[2]), float(args[3]), float(args[4]))
|
||||
# eg. set opacity of the line_selection colour
|
||||
# float line_selection_opacity 0.4
|
||||
elif args[0] == 'float' and len(args) == 3:
|
||||
self.floats[args[1]] = float(args[2])
|
||||
# eg. set the help browser
|
||||
# string help_browser gnome-help
|
||||
elif args[0] == 'string' and len(args) == 3:
|
||||
self.strings[args[1]] = args[2]
|
||||
if args[1] == 'difference_colours':
|
||||
self.setDifferenceColours(args[2])
|
||||
# eg. start a syntax specification for Python
|
||||
# syntax Python normal text
|
||||
# where 'normal' is the name of the default state and
|
||||
# 'text' is the classification of all characters not
|
||||
# explicitly matched by a syntax highlighting rule
|
||||
elif args[0] == 'syntax' and (len(args) == 2 or len(args) == 4):
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove file pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_file_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
# remove magic pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_magic_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
# remove a syntax specification
|
||||
self.current_syntax = None
|
||||
try:
|
||||
del self.syntaxes[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
self.current_syntax = _SyntaxParser(args[2], args[3])
|
||||
self.syntaxes[key] = self.current_syntax
|
||||
# eg. transition from state 'normal' to 'comment' when
|
||||
# the pattern '#' is matched and classify the matched
|
||||
# characters as 'python_comment'
|
||||
# syntax_pattern normal comment python_comment '#'
|
||||
elif (
|
||||
args[0] == 'syntax_pattern' and
|
||||
self.current_syntax is not None and
|
||||
len(args) >= 5
|
||||
):
|
||||
flags = 0
|
||||
for arg in args[5:]:
|
||||
if arg == 'ignorecase':
|
||||
flags |= re.IGNORECASE
|
||||
else:
|
||||
raise ValueError()
|
||||
self.current_syntax.addPattern(
|
||||
args[1],
|
||||
args[2],
|
||||
args[3],
|
||||
re.compile(args[4], flags))
|
||||
# eg. default to the Python syntax rules when viewing
|
||||
# a file ending with '.py' or '.pyw'
|
||||
# syntax_files Python '\.pyw?$'
|
||||
elif args[0] == 'syntax_files' and (len(args) == 2 or len(args) == 3):
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove file pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_file_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
flags = 0
|
||||
if utils.isWindows():
|
||||
flags |= re.IGNORECASE
|
||||
self.syntax_file_patterns[key] = re.compile(args[2], flags)
|
||||
# eg. default to the Python syntax rules when viewing
|
||||
# a files starting with patterns like #!/usr/bin/python
|
||||
# syntax_magic Python '^#!/usr/bin/python$'
|
||||
elif args[0] == 'syntax_magic' and len(args) > 1:
|
||||
key = args[1]
|
||||
if len(args) == 2:
|
||||
# remove magic pattern for a syntax specification
|
||||
try:
|
||||
del self.syntax_magic_patterns[key]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
flags = 0
|
||||
for arg in args[3:]:
|
||||
if arg == 'ignorecase':
|
||||
flags |= re.IGNORECASE
|
||||
else:
|
||||
raise ValueError()
|
||||
self.syntax_magic_patterns[key] = re.compile(args[2], flags)
|
||||
else:
|
||||
raise ValueError()
|
||||
# pylint: disable-next=bare-except
|
||||
except: # Grr... the 're' module throws weird errors
|
||||
#except ValueError:
|
||||
utils.logError(_(f'Error processing line {i + 1} of {file_name}.'))
|
||||
|
||||
# colour resources
|
||||
class _Colour:
|
||||
def __init__(self, r, g, b, a=1.0):
|
||||
# the individual colour components as floats in the range [0, 1]
|
||||
self.red = r
|
||||
self.green = g
|
||||
self.blue = b
|
||||
self.alpha = a
|
||||
|
||||
# multiply by scalar
|
||||
def __mul__(self, s):
|
||||
return _Colour(s * self.red, s * self.green, s * self.blue, s * self.alpha)
|
||||
|
||||
# add colours
|
||||
def __add__(self, other):
|
||||
return _Colour(
|
||||
self.red + other.red,
|
||||
self.green + other.green,
|
||||
self.blue + other.blue,
|
||||
self.alpha + other.alpha)
|
||||
|
||||
# over operator
|
||||
def over(self, other):
|
||||
return self + other * (1 - self.alpha)
|
||||
|
||||
# class to build and run a finite state machine for identifying syntax tokens
|
||||
class _SyntaxParser:
|
||||
# create a new state machine that begins in initial_state and classifies
|
||||
# all characters not matched by the patterns as default_token_type
|
||||
def __init__(self, initial_state, default_token_type):
|
||||
# initial state for the state machine when parsing a new file
|
||||
self.initial_state = initial_state
|
||||
# default classification of characters that are not explicitly matched
|
||||
# by any state transition patterns
|
||||
self.default_token_type = default_token_type
|
||||
# mappings from a state to a list of (pattern, token_type, next_state)
|
||||
# tuples indicating the new state for the state machine when 'pattern'
|
||||
# is matched and how to classify the matched characters
|
||||
self.transitions_lookup = { initial_state : [] }
|
||||
|
||||
# Adds a new edge to the finite state machine from prev_state to
|
||||
# next_state. Characters will be identified as token_type when pattern is
|
||||
# matched. Any newly referenced state will be added. Patterns for edges
|
||||
# leaving a state will be tested in the order they were added to the finite
|
||||
# state machine.
|
||||
def addPattern(self, prev_state, next_state, token_type, pattern):
|
||||
lookup = self.transitions_lookup
|
||||
for state in prev_state, next_state:
|
||||
if state not in lookup:
|
||||
lookup[state] = []
|
||||
lookup[prev_state].append([pattern, token_type, next_state])
|
||||
|
||||
# given a string and an initial state, identify the final state and tokens
|
||||
def parse(self, state_name, s):
|
||||
lookup = self.transitions_lookup
|
||||
transitions, blocks, start = lookup[state_name], [], 0
|
||||
while start < len(s):
|
||||
for pattern, token_type, next_state in transitions:
|
||||
m = pattern.match(s, start)
|
||||
if m is not None:
|
||||
end, state_name = m.span()[1], next_state
|
||||
transitions = lookup[state_name]
|
||||
break
|
||||
else:
|
||||
end, token_type = start + 1, self.default_token_type
|
||||
if len(blocks) > 0 and blocks[-1][2] == token_type:
|
||||
blocks[-1][1] = end
|
||||
else:
|
||||
blocks.append([start, end, token_type])
|
||||
start = end
|
||||
return state_name, blocks
|
||||
|
|
@ -190,6 +190,9 @@ def popenReadLines(dn, cmd, prefs, bash_pref, success_results=None):
|
|||
return _strip_eols(splitlines(popenRead(
|
||||
dn, cmd, prefs, bash_pref, success_results).decode('utf-8', errors='ignore')))
|
||||
|
||||
def readconfiglines(fd):
|
||||
return fd.read().replace('\r', '').split('\n')
|
||||
|
||||
# escape special glob characters
|
||||
def globEscape(s):
|
||||
m = { c: f'[{c}]' for c in '[]?*' }
|
||||
|
|
|
|||
Loading…
Reference in New Issue