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PATH: usr / lib64 / python2.7 / idlelib

# Extension to format a paragraph

# Does basic, standard text formatting, and also understands Python
# comment blocks.  Thus, for editing Python source code, this
# extension is really only suitable for reformatting these comment
# blocks or triple-quoted strings.

# Known problems with comment reformatting:
# * If there is a selection marked, and the first line of the
#   selection is not complete, the block will probably not be detected
#   as comments, and will have the normal "text formatting" rules
#   applied.
# * If a comment block has leading whitespace that mixes tabs and
#   spaces, they will not be considered part of the same block.
# * Fancy comments, like this bulleted list, arent handled :-)

import re
from idlelib.configHandler import idleConf

class FormatParagraph:

menudefs = [
        ('format', [   # /s/edit/format   dscherer@cmu.edu
            ('Format Paragraph', '<<format-paragraph>>'),
         ])
    ]

def __init__(self, editwin):
        self.editwin = editwin

def close(self):
        self.editwin = None

def format_paragraph_event(self, event):
        maxformatwidth = int(idleConf.GetOption('main','FormatParagraph',
                                                'paragraph', type='int'))
        text = self.editwin.text
        first, last = self.editwin.get_selection_indices()
        if first and last:
            data = text.get(first, last)
            comment_header = ''
        else:
            first, last, comment_header, data = \
                    find_paragraph(text, text.index("insert"))
        if comment_header:
            # Reformat the comment lines - convert to text sans header.
            lines = data.split("\n")
            lines = map(lambda st, l=len(comment_header): st[l:], lines)
            data = "\n".join(lines)
            # Reformat to maxformatwidth chars or a 20 char width, whichever is greater.
            format_width = max(maxformatwidth - len(comment_header), 20)
            newdata = reformat_paragraph(data, format_width)
            # re-split and re-insert the comment header.
            newdata = newdata.split("\n")
            # If the block ends in a \n, we dont want the comment
            # prefix inserted after it. (Im not sure it makes sense to
            # reformat a comment block that isnt made of complete
            # lines, but whatever!)  Can't think of a clean solution,
            # so we hack away
            block_suffix = ""
            if not newdata[-1]:
                block_suffix = "\n"
                newdata = newdata[:-1]
            builder = lambda item, prefix=comment_header: prefix+item
            newdata = '\n'.join(map(builder, newdata)) + block_suffix
        else:
            # Just a normal text format
            newdata = reformat_paragraph(data, maxformatwidth)
        text.tag_remove("sel", "1.0", "end")
        if newdata != data:
            text.mark_set("insert", first)
            text.undo_block_start()
            text.delete(first, last)
            text.insert(first, newdata)
            text.undo_block_stop()
        else:
            text.mark_set("insert", last)
        text.see("insert")
        return "break"

def find_paragraph(text, mark):
    lineno, col = map(int, mark.split("."))
    line = text.get("%d.0" % lineno, "%d.0 lineend" % lineno)
    while text.compare("%d.0" % lineno, "<", "end") and is_all_white(line):
        lineno = lineno + 1
        line = text.get("%d.0" % lineno, "%d.0 lineend" % lineno)
    first_lineno = lineno
    comment_header = get_comment_header(line)
    comment_header_len = len(comment_header)
    while get_comment_header(line)==comment_header and \
              not is_all_white(line[comment_header_len:]):
        lineno = lineno + 1
        line = text.get("%d.0" % lineno, "%d.0 lineend" % lineno)
    last = "%d.0" % lineno
    # Search back to beginning of paragraph
    lineno = first_lineno - 1
    line = text.get("%d.0" % lineno, "%d.0 lineend" % lineno)
    while lineno > 0 and \
              get_comment_header(line)==comment_header and \
              not is_all_white(line[comment_header_len:]):
        lineno = lineno - 1
        line = text.get("%d.0" % lineno, "%d.0 lineend" % lineno)
    first = "%d.0" % (lineno+1)
    return first, last, comment_header, text.get(first, last)

def reformat_paragraph(data, limit):
    lines = data.split("\n")
    i = 0
    n = len(lines)
    while i < n and is_all_white(lines[i]):
        i = i+1
    if i >= n:
        return data
    indent1 = get_indent(lines[i])
    if i+1 < n and not is_all_white(lines[i+1]):
        indent2 = get_indent(lines[i+1])
    else:
        indent2 = indent1
    new = lines[:i]
    partial = indent1
    while i < n and not is_all_white(lines[i]):
        # XXX Should take double space after period (etc.) into account
        words = re.split("(\s+)", lines[i])
        for j in range(0, len(words), 2):
            word = words[j]
            if not word:
                continue # Can happen when line ends in whitespace
            if len((partial + word).expandtabs()) > limit and \
               partial != indent1:
                new.append(partial.rstrip())
                partial = indent2
            partial = partial + word + " "
            if j+1 < len(words) and words[j+1] != " ":
                partial = partial + " "
        i = i+1
    new.append(partial.rstrip())
    # XXX Should reformat remaining paragraphs as well
    new.extend(lines[i:])
    return "\n".join(new)

def is_all_white(line):
    return re.match(r"^\s*$", line) is not None

def get_indent(line):
    return re.match(r"^(\s*)", line).group()

def get_comment_header(line):
    m = re.match(r"^(\s*#*)", line)
    if m is None: return ""
    return m.group(1)

[+] ..
[-] PyParse.pyo [edit]
[-] ReplaceDialog.pyo [edit]
[-] HyperParser.pyo [edit]
[-] CodeContext.pyo [edit]
[-] MultiCall.py [edit]
[-] WidgetRedirector.py [edit]
[-] FormatParagraph.pyo [edit]
[-] UndoDelegator.pyo [edit]
[-] RstripExtension.pyo [edit]
[-] AutoComplete.pyo [edit]
[-] tabbedpages.py [edit]
[-] StackViewer.py [edit]
[-] ToolTip.py [edit]
[-] CodeContext.pyc [edit]
[-] configDialog.pyo [edit]
[-] OutputWindow.pyc [edit]
[-] __init__.pyo [edit]
[-] configHandler.pyo [edit]
[-] Bindings.pyc [edit]
[-] configSectionNameDialog.pyc [edit]
[-] dynOptionMenuWidget.pyo [edit]
[-] ColorDelegator.pyc [edit]
[-] StackViewer.pyo [edit]
[-] PyParse.pyc [edit]
[-] PathBrowser.pyo [edit]
[-] configSectionNameDialog.py [edit]
[-] IdleHistory.pyo [edit]
[-] idlever.pyo [edit]
[-] ParenMatch.pyo [edit]
[-] ScriptBinding.pyc [edit]
[-] EditorWindow.pyc [edit]
[-] config-keys.def [edit]
[-] ClassBrowser.pyc [edit]
[-] configDialog.pyc [edit]
[-] dynOptionMenuWidget.py [edit]
[-] idlever.py [edit]
[-] SearchDialogBase.py [edit]
[-] CallTips.pyo [edit]
[-] HyperParser.pyc [edit]
[-] AutoCompleteWindow.pyc [edit]
[-] ObjectBrowser.py [edit]
[-] WindowList.pyc [edit]
[-] textView.pyo [edit]
[-] ReplaceDialog.py [edit]
[-] FileList.py [edit]
[-] RemoteObjectBrowser.py [edit]
[-] MultiStatusBar.pyc [edit]
[-] SearchDialogBase.pyo [edit]
[-] configHandler.pyc [edit]
[-] IOBinding.pyo [edit]
[-] IOBinding.pyc [edit]
[-] FileList.pyo [edit]
[-] EditorWindow.pyo [edit]
[-] ParenMatch.pyc [edit]
[-] AutoExpand.pyc [edit]
[+] Icons
[-] SearchDialogBase.pyc [edit]
[-] IdleHistory.pyc [edit]
[-] FormatParagraph.pyc [edit]
[-] rpc.py [edit]
[-] PyShell.pyc [edit]
[-] MultiCall.pyc [edit]
[-] ScrolledList.pyc [edit]
[-] SearchEngine.py [edit]
[-] ClassBrowser.pyo [edit]
[-] TreeWidget.pyc [edit]
[-] PathBrowser.pyc [edit]
[-] ScrolledList.pyo [edit]
[-] README.txt [edit]
[-] idle.py [edit]
[-] configHandler.py [edit]
[-] configDialog.py [edit]
[-] __init__.pyc [edit]
[-] Percolator.pyc [edit]
[-] ObjectBrowser.pyc [edit]
[-] RemoteObjectBrowser.pyc [edit]
[-] MultiCall.pyo [edit]
[-] ClassBrowser.py [edit]
[-] run.py [edit]
[-] OutputWindow.py [edit]
[-] aboutDialog.pyo [edit]
[-] SearchDialog.py [edit]
[-] AutoExpand.py [edit]
[-] Debugger.py [edit]
[-] FormatParagraph.py [edit]
[-] SearchEngine.pyo [edit]
[-] Percolator.pyo [edit]
[-] ColorDelegator.py [edit]
[-] IdleHistory.py [edit]
[-] configSectionNameDialog.pyo [edit]
[-] idlever.pyc [edit]
[-] macosxSupport.pyc [edit]
[-] RemoteDebugger.pyc [edit]
[-] EditorWindow.py [edit]
[-] Bindings.py [edit]
[-] textView.py [edit]
[-] idle.pyc [edit]
[-] TreeWidget.pyo [edit]
[-] PathBrowser.py [edit]
[-] CREDITS.txt [edit]
[-] GrepDialog.pyc [edit]
[-] Delegator.pyo [edit]
[-] SearchEngine.pyc [edit]
[-] ZoomHeight.py [edit]
[-] Bindings.pyo [edit]
[-] TODO.txt [edit]
[-] Delegator.py [edit]
[-] idle.pyw [edit]
[-] AutoExpand.pyo [edit]
[-] ScriptBinding.py [edit]
[-] ObjectBrowser.pyo [edit]
[-] aboutDialog.py [edit]
[-] Delegator.pyc [edit]
[-] CodeContext.py [edit]
[-] MultiStatusBar.pyo [edit]
[-] GrepDialog.pyo [edit]
[-] config-main.def [edit]
[-] RstripExtension.py [edit]
[-] AutoCompleteWindow.pyo [edit]
[-] UndoDelegator.pyc [edit]
[-] NEWS.txt [edit]
[-] ChangeLog [edit]
[-] SearchDialog.pyc [edit]
[-] StackViewer.pyc [edit]
[-] RstripExtension.pyc [edit]
[-] extend.txt [edit]
[-] SearchDialog.pyo [edit]
[-] RemoteDebugger.pyo [edit]
[-] TreeWidget.py [edit]
[-] rpc.pyo [edit]
[-] OutputWindow.pyo [edit]
[-] ToolTip.pyo [edit]
[-] keybindingDialog.pyo [edit]
[-] aboutDialog.pyc [edit]
[-] CallTipWindow.py [edit]
[-] ZoomHeight.pyo [edit]
[-] ScriptBinding.pyo [edit]
[-] GrepDialog.py [edit]
[-] help.txt [edit]
[-] UndoDelegator.py [edit]
[-] PyParse.py [edit]
[-] Debugger.pyc [edit]
[-] CallTips.py [edit]
[-] MultiStatusBar.py [edit]
[-] config-extensions.def [edit]
[-] WidgetRedirector.pyc [edit]
[-] Debugger.pyo [edit]
[-] ParenMatch.py [edit]
[-] config-highlight.def [edit]
[-] ToolTip.pyc [edit]
[-] WidgetRedirector.pyo [edit]
[-] WindowList.py [edit]
[-] __init__.py [edit]
[-] AutoCompleteWindow.py [edit]
[-] ZoomHeight.pyc [edit]
[-] CallTipWindow.pyc [edit]
[-] macosxSupport.py [edit]
[-] ScrolledList.py [edit]
[-] IOBinding.py [edit]
[-] tabbedpages.pyo [edit]
[-] HISTORY.txt [edit]
[-] WindowList.pyo [edit]
[-] CallTipWindow.pyo [edit]
[-] dynOptionMenuWidget.pyc [edit]
[-] ColorDelegator.pyo [edit]
[-] ReplaceDialog.pyc [edit]
[-] keybindingDialog.py [edit]
[-] tabbedpages.pyc [edit]
[-] CallTips.pyc [edit]
[-] rpc.pyc [edit]
[-] textView.pyc [edit]
[-] configHelpSourceEdit.pyo [edit]
[-] idle.pyo [edit]
[-] Percolator.py [edit]
[-] configHelpSourceEdit.py [edit]
[-] PyShell.pyo [edit]
[-] RemoteDebugger.py [edit]
[-] FileList.pyc [edit]
[-] configHelpSourceEdit.pyc [edit]
[-] PyShell.py [edit]
[-] run.pyc [edit]
[-] keybindingDialog.pyc [edit]
[-] RemoteObjectBrowser.pyo [edit]
[-] AutoComplete.py [edit]
[-] macosxSupport.pyo [edit]
[-] HyperParser.py [edit]
[-] AutoComplete.pyc [edit]
[-] run.pyo [edit]