| 1 | from Tkinter import *
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| 2 |
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| 3 | from idlelib import SearchEngine
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| 4 | from idlelib.SearchDialogBase import SearchDialogBase
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| 5 | import re
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| 6 |
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| 7 |
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| 8 | def replace(text):
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| 9 | root = text._root()
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| 10 | engine = SearchEngine.get(root)
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| 11 | if not hasattr(engine, "_replacedialog"):
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| 12 | engine._replacedialog = ReplaceDialog(root, engine)
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| 13 | dialog = engine._replacedialog
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| 14 | dialog.open(text)
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| 15 |
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| 16 |
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| 17 | class ReplaceDialog(SearchDialogBase):
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| 18 |
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| 19 | title = "Replace Dialog"
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| 20 | icon = "Replace"
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| 21 |
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| 22 | def __init__(self, root, engine):
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| 23 | SearchDialogBase.__init__(self, root, engine)
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| 24 | self.replvar = StringVar(root)
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| 25 |
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| 26 | def open(self, text):
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| 27 | SearchDialogBase.open(self, text)
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| 28 | try:
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| 29 | first = text.index("sel.first")
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| 30 | except TclError:
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| 31 | first = None
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| 32 | try:
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| 33 | last = text.index("sel.last")
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| 34 | except TclError:
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| 35 | last = None
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| 36 | first = first or text.index("insert")
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| 37 | last = last or first
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| 38 | self.show_hit(first, last)
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| 39 | self.ok = 1
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| 40 |
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| 41 | def create_entries(self):
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| 42 | SearchDialogBase.create_entries(self)
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| 43 | self.replent = self.make_entry("Replace with:", self.replvar)
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| 44 |
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| 45 | def create_command_buttons(self):
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| 46 | SearchDialogBase.create_command_buttons(self)
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| 47 | self.make_button("Find", self.find_it)
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| 48 | self.make_button("Replace", self.replace_it)
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| 49 | self.make_button("Replace+Find", self.default_command, 1)
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| 50 | self.make_button("Replace All", self.replace_all)
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| 51 |
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| 52 | def find_it(self, event=None):
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| 53 | self.do_find(0)
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| 54 |
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| 55 | def replace_it(self, event=None):
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| 56 | if self.do_find(self.ok):
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| 57 | self.do_replace()
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| 58 |
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| 59 | def default_command(self, event=None):
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| 60 | if self.do_find(self.ok):
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| 61 | if self.do_replace(): # Only find next match if replace succeeded.
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| 62 | # A bad re can cause a it to fail.
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| 63 | self.do_find(0)
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| 64 |
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| 65 | def _replace_expand(self, m, repl):
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| 66 | """ Helper function for expanding a regular expression
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| 67 | in the replace field, if needed. """
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| 68 | if self.engine.isre():
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| 69 | try:
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| 70 | new = m.expand(repl)
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| 71 | except re.error:
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| 72 | self.engine.report_error(repl, 'Invalid Replace Expression')
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| 73 | new = None
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| 74 | else:
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| 75 | new = repl
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| 76 | return new
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| 77 |
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| 78 | def replace_all(self, event=None):
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| 79 | prog = self.engine.getprog()
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| 80 | if not prog:
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| 81 | return
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| 82 | repl = self.replvar.get()
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| 83 | text = self.text
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| 84 | res = self.engine.search_text(text, prog)
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| 85 | if not res:
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| 86 | text.bell()
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| 87 | return
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| 88 | text.tag_remove("sel", "1.0", "end")
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| 89 | text.tag_remove("hit", "1.0", "end")
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| 90 | line = res[0]
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| 91 | col = res[1].start()
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| 92 | if self.engine.iswrap():
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| 93 | line = 1
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| 94 | col = 0
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| 95 | ok = 1
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| 96 | first = last = None
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| 97 | # XXX ought to replace circular instead of top-to-bottom when wrapping
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| 98 | text.undo_block_start()
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| 99 | while 1:
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| 100 | res = self.engine.search_forward(text, prog, line, col, 0, ok)
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| 101 | if not res:
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| 102 | break
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| 103 | line, m = res
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| 104 | chars = text.get("%d.0" % line, "%d.0" % (line+1))
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| 105 | orig = m.group()
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| 106 | new = self._replace_expand(m, repl)
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| 107 | if new is None:
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| 108 | break
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| 109 | i, j = m.span()
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| 110 | first = "%d.%d" % (line, i)
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| 111 | last = "%d.%d" % (line, j)
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| 112 | if new == orig:
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| 113 | text.mark_set("insert", last)
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| 114 | else:
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| 115 | text.mark_set("insert", first)
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| 116 | if first != last:
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| 117 | text.delete(first, last)
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| 118 | if new:
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| 119 | text.insert(first, new)
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| 120 | col = i + len(new)
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| 121 | ok = 0
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| 122 | text.undo_block_stop()
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| 123 | if first and last:
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| 124 | self.show_hit(first, last)
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| 125 | self.close()
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| 126 |
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| 127 | def do_find(self, ok=0):
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| 128 | if not self.engine.getprog():
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| 129 | return False
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| 130 | text = self.text
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| 131 | res = self.engine.search_text(text, None, ok)
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| 132 | if not res:
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| 133 | text.bell()
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| 134 | return False
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| 135 | line, m = res
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| 136 | i, j = m.span()
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| 137 | first = "%d.%d" % (line, i)
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| 138 | last = "%d.%d" % (line, j)
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| 139 | self.show_hit(first, last)
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| 140 | self.ok = 1
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| 141 | return True
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| 142 |
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| 143 | def do_replace(self):
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| 144 | prog = self.engine.getprog()
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| 145 | if not prog:
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| 146 | return False
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| 147 | text = self.text
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| 148 | try:
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| 149 | first = pos = text.index("sel.first")
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| 150 | last = text.index("sel.last")
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| 151 | except TclError:
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| 152 | pos = None
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| 153 | if not pos:
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| 154 | first = last = pos = text.index("insert")
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| 155 | line, col = SearchEngine.get_line_col(pos)
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| 156 | chars = text.get("%d.0" % line, "%d.0" % (line+1))
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| 157 | m = prog.match(chars, col)
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| 158 | if not prog:
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| 159 | return False
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| 160 | new = self._replace_expand(m, self.replvar.get())
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| 161 | if new is None:
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| 162 | return False
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| 163 | text.mark_set("insert", first)
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| 164 | text.undo_block_start()
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| 165 | if m.group():
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| 166 | text.delete(first, last)
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| 167 | if new:
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| 168 | text.insert(first, new)
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| 169 | text.undo_block_stop()
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| 170 | self.show_hit(first, text.index("insert"))
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| 171 | self.ok = 0
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| 172 | return True
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| 173 |
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| 174 | def show_hit(self, first, last):
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| 175 | text = self.text
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| 176 | text.mark_set("insert", first)
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| 177 | text.tag_remove("sel", "1.0", "end")
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| 178 | text.tag_add("sel", first, last)
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| 179 | text.tag_remove("hit", "1.0", "end")
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| 180 | if first == last:
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| 181 | text.tag_add("hit", first)
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| 182 | else:
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| 183 | text.tag_add("hit", first, last)
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| 184 | text.see("insert")
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| 185 | text.update_idletasks()
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| 186 |
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| 187 | def close(self, event=None):
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| 188 | SearchDialogBase.close(self, event)
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| 189 | self.text.tag_remove("hit", "1.0", "end")
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