| 4710c53d |
1 | """Basic regular expression demostration facility (Perl style syntax)."""\r |
| 2 | \r |
| 3 | from Tkinter import *\r |
| 4 | import re\r |
| 5 | \r |
| 6 | class ReDemo:\r |
| 7 | \r |
| 8 | def __init__(self, master):\r |
| 9 | self.master = master\r |
| 10 | \r |
| 11 | self.promptdisplay = Label(self.master, anchor=W,\r |
| 12 | text="Enter a Perl-style regular expression:")\r |
| 13 | self.promptdisplay.pack(side=TOP, fill=X)\r |
| 14 | \r |
| 15 | self.regexdisplay = Entry(self.master)\r |
| 16 | self.regexdisplay.pack(fill=X)\r |
| 17 | self.regexdisplay.focus_set()\r |
| 18 | \r |
| 19 | self.addoptions()\r |
| 20 | \r |
| 21 | self.statusdisplay = Label(self.master, text="", anchor=W)\r |
| 22 | self.statusdisplay.pack(side=TOP, fill=X)\r |
| 23 | \r |
| 24 | self.labeldisplay = Label(self.master, anchor=W,\r |
| 25 | text="Enter a string to search:")\r |
| 26 | self.labeldisplay.pack(fill=X)\r |
| 27 | self.labeldisplay.pack(fill=X)\r |
| 28 | \r |
| 29 | self.showframe = Frame(master)\r |
| 30 | self.showframe.pack(fill=X, anchor=W)\r |
| 31 | \r |
| 32 | self.showvar = StringVar(master)\r |
| 33 | self.showvar.set("first")\r |
| 34 | \r |
| 35 | self.showfirstradio = Radiobutton(self.showframe,\r |
| 36 | text="Highlight first match",\r |
| 37 | variable=self.showvar,\r |
| 38 | value="first",\r |
| 39 | command=self.recompile)\r |
| 40 | self.showfirstradio.pack(side=LEFT)\r |
| 41 | \r |
| 42 | self.showallradio = Radiobutton(self.showframe,\r |
| 43 | text="Highlight all matches",\r |
| 44 | variable=self.showvar,\r |
| 45 | value="all",\r |
| 46 | command=self.recompile)\r |
| 47 | self.showallradio.pack(side=LEFT)\r |
| 48 | \r |
| 49 | self.stringdisplay = Text(self.master, width=60, height=4)\r |
| 50 | self.stringdisplay.pack(fill=BOTH, expand=1)\r |
| 51 | self.stringdisplay.tag_configure("hit", background="yellow")\r |
| 52 | \r |
| 53 | self.grouplabel = Label(self.master, text="Groups:", anchor=W)\r |
| 54 | self.grouplabel.pack(fill=X)\r |
| 55 | \r |
| 56 | self.grouplist = Listbox(self.master)\r |
| 57 | self.grouplist.pack(expand=1, fill=BOTH)\r |
| 58 | \r |
| 59 | self.regexdisplay.bind('<Key>', self.recompile)\r |
| 60 | self.stringdisplay.bind('<Key>', self.reevaluate)\r |
| 61 | \r |
| 62 | self.compiled = None\r |
| 63 | self.recompile()\r |
| 64 | \r |
| 65 | btags = self.regexdisplay.bindtags()\r |
| 66 | self.regexdisplay.bindtags(btags[1:] + btags[:1])\r |
| 67 | \r |
| 68 | btags = self.stringdisplay.bindtags()\r |
| 69 | self.stringdisplay.bindtags(btags[1:] + btags[:1])\r |
| 70 | \r |
| 71 | def addoptions(self):\r |
| 72 | self.frames = []\r |
| 73 | self.boxes = []\r |
| 74 | self.vars = []\r |
| 75 | for name in ('IGNORECASE',\r |
| 76 | 'LOCALE',\r |
| 77 | 'MULTILINE',\r |
| 78 | 'DOTALL',\r |
| 79 | 'VERBOSE'):\r |
| 80 | if len(self.boxes) % 3 == 0:\r |
| 81 | frame = Frame(self.master)\r |
| 82 | frame.pack(fill=X)\r |
| 83 | self.frames.append(frame)\r |
| 84 | val = getattr(re, name)\r |
| 85 | var = IntVar()\r |
| 86 | box = Checkbutton(frame,\r |
| 87 | variable=var, text=name,\r |
| 88 | offvalue=0, onvalue=val,\r |
| 89 | command=self.recompile)\r |
| 90 | box.pack(side=LEFT)\r |
| 91 | self.boxes.append(box)\r |
| 92 | self.vars.append(var)\r |
| 93 | \r |
| 94 | def getflags(self):\r |
| 95 | flags = 0\r |
| 96 | for var in self.vars:\r |
| 97 | flags = flags | var.get()\r |
| 98 | flags = flags\r |
| 99 | return flags\r |
| 100 | \r |
| 101 | def recompile(self, event=None):\r |
| 102 | try:\r |
| 103 | self.compiled = re.compile(self.regexdisplay.get(),\r |
| 104 | self.getflags())\r |
| 105 | bg = self.promptdisplay['background']\r |
| 106 | self.statusdisplay.config(text="", background=bg)\r |
| 107 | except re.error, msg:\r |
| 108 | self.compiled = None\r |
| 109 | self.statusdisplay.config(\r |
| 110 | text="re.error: %s" % str(msg),\r |
| 111 | background="red")\r |
| 112 | self.reevaluate()\r |
| 113 | \r |
| 114 | def reevaluate(self, event=None):\r |
| 115 | try:\r |
| 116 | self.stringdisplay.tag_remove("hit", "1.0", END)\r |
| 117 | except TclError:\r |
| 118 | pass\r |
| 119 | try:\r |
| 120 | self.stringdisplay.tag_remove("hit0", "1.0", END)\r |
| 121 | except TclError:\r |
| 122 | pass\r |
| 123 | self.grouplist.delete(0, END)\r |
| 124 | if not self.compiled:\r |
| 125 | return\r |
| 126 | self.stringdisplay.tag_configure("hit", background="yellow")\r |
| 127 | self.stringdisplay.tag_configure("hit0", background="orange")\r |
| 128 | text = self.stringdisplay.get("1.0", END)\r |
| 129 | last = 0\r |
| 130 | nmatches = 0\r |
| 131 | while last <= len(text):\r |
| 132 | m = self.compiled.search(text, last)\r |
| 133 | if m is None:\r |
| 134 | break\r |
| 135 | first, last = m.span()\r |
| 136 | if last == first:\r |
| 137 | last = first+1\r |
| 138 | tag = "hit0"\r |
| 139 | else:\r |
| 140 | tag = "hit"\r |
| 141 | pfirst = "1.0 + %d chars" % first\r |
| 142 | plast = "1.0 + %d chars" % last\r |
| 143 | self.stringdisplay.tag_add(tag, pfirst, plast)\r |
| 144 | if nmatches == 0:\r |
| 145 | self.stringdisplay.yview_pickplace(pfirst)\r |
| 146 | groups = list(m.groups())\r |
| 147 | groups.insert(0, m.group())\r |
| 148 | for i in range(len(groups)):\r |
| 149 | g = "%2d: %r" % (i, groups[i])\r |
| 150 | self.grouplist.insert(END, g)\r |
| 151 | nmatches = nmatches + 1\r |
| 152 | if self.showvar.get() == "first":\r |
| 153 | break\r |
| 154 | \r |
| 155 | if nmatches == 0:\r |
| 156 | self.statusdisplay.config(text="(no match)",\r |
| 157 | background="yellow")\r |
| 158 | else:\r |
| 159 | self.statusdisplay.config(text="")\r |
| 160 | \r |
| 161 | \r |
| 162 | # Main function, run when invoked as a stand-alone Python program.\r |
| 163 | \r |
| 164 | def main():\r |
| 165 | root = Tk()\r |
| 166 | demo = ReDemo(root)\r |
| 167 | root.protocol('WM_DELETE_WINDOW', root.quit)\r |
| 168 | root.mainloop()\r |
| 169 | \r |
| 170 | if __name__ == '__main__':\r |
| 171 | main()\r |
projects / mirror_edk2.git / blame