pmacs3/mode/diff.py

50 lines
1.8 KiB
Python

import color, method, mode2, re
from lex3 import Grammar, PatternRule, RegionRule
class DiffGrammar(Grammar):
rules = [
PatternRule(name=r'left', pattern=r"^\-.*\n$"),
PatternRule(name=r'right', pattern=r"^\+.*\n$"),
PatternRule(name=r'metadata', pattern=r'^[A-Za-z].*\n$'),
PatternRule(name=r'seperator', pattern=r'^={67}\n$'),
PatternRule(name=r'location', pattern=r"^@@ [-+0-9a-z, ]* @@\n$"),
PatternRule(name=r'common', pattern=r"^.*\n$"),
]
class Diff(mode2.Fundamental):
modename = 'diff'
grammar = DiffGrammar()
colors = {
'left': ('red', 'default', 'bold'),
'right': ('blue', 'default', 'bold'),
'seperator': ('magenta', 'default', 'bold'),
'metadata': ('magenta', 'default', 'bold'),
'location': ('magenta', 'default', 'bold'),
}
def __init__(self, w):
mode2.Fundamental.__init__(self, w)
#self.add_action_and_bindings(DiffNextSection(), ('M-n', 'M-D_ARROW',))
#self.add_action_and_bindings(DiffPreviousSection(), ('M-p', 'M-U_ARROW',))
class DiffNextSection(method.Method):
re = re.compile("(?:^|(?<=\n))@@ [-+0-9a-z, ]* @@(?:$|\n)")
def _execute(self, w, **vargs):
cursor = w.logical_cursor()
i = cursor.y + 1
while i < len(w.buffer.lines):
if self.re.match(w.buffer.lines[i]):
w.goto_line(i)
return
i += 1
class DiffPreviousSection(method.Method):
re = re.compile("(?:^|(?<=\n))@@ [-+0-9a-z, ]* @@(?:$|\n)")
def _execute(self, w, **vargs):
cursor = w.logical_cursor()
i = cursor.y - 1
while i >= 0:
if self.re.match(w.buffer.lines[i]):
w.goto_line(i)
return
i -= 1