import os, commands, re, sets, tempfile
from subprocess import Popen, PIPE, STDOUT

import buffer, default, dirutil, regex, util, window
from point import Point

from method import DATATYPES, Method, Argument

class SvnCommit(Method):
    '''diff the current file with the version in SVN'''
    args = [Argument("msg", type=type(""), prompt="Commit Message: ")]
    regex = re.compile(r'^Committed revision ([0-9]+)\.$')
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        cwd = os.getcwd() + os.path.sep
        path = w.buffer.path
        if path.startswith(cwd):
            path = path[len(cwd):]

        cmd = "svn ci -m %r %r" % (vargs['msg'], path)
        (status, data) = commands.getstatusoutput(cmd)
        status = status >> 8
        lines = data.split('\n')

        if status == 0:
            try:
                for line in lines:
                    m = self.regex.match(line)
                    if m:
                        w.set_error("Committed [%s]" % (m.group(1)))
                        return
            except:
                pass
        w.set_error("Problems with SVN commit: %d" % status)
        w.application.data_buffer("*Commit*", repr(lines), switch_to=True)
    
class SvnStatus(Method):
    column = {
        ' ': 'Unmodified',
        'A': 'Added',
        'C': 'Conflicted',
        'D': 'Deleted',
        'I': 'Ignored',
        'M': 'Modified',
        'R': 'Replaced',
        'X': 'External',
        '?': 'Unknown',
        '!': 'Missing',
        '~': 'Obstructed',
    }
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        cwd = os.getcwd() + os.path.sep
        path = w.buffer.path
        if path.startswith(cwd):
            path = path[len(cwd):]
        cmd = "svn status -v %r" % path
        (status, data) = commands.getstatusoutput(cmd)
        status = status >> 8

        if status != 0:
            w.set_error("Problems with 'svn status': %d" % status)
            return

        c = data[0]
        status = self.column.get(c, 'Error (%s)' % c)
        fields = data[6:].split()
        try:
            (rrev, lrev, lauthor, filename) = fields
        except:
            raise Exception, '%r %r' % (fields, data[6:])

        w.set_error('%s  %s  %s/%s  [%s]' % (filename, status, rrev, lrev, lauthor))
class SvnDiff(Method):
    '''diff the current file with the version in SVN'''
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        cmd = "svn diff %r" % w.buffer.path
        (status, data) = commands.getstatusoutput(cmd)

        if status == 0:
            if data:
                w.application.data_buffer("*Diff*", data, switch_to=True, modename='diff')
                w.set_error("Differences were found")
            else:
                w.set_error("No difference found")
        else:
            w.set_error("There was an error (%s)" % (status))
class SvnDiff2(Method):
    '''diff the current file with the version in SVN'''
    rev_regex = re.compile('^[0-9]+$')
    args = [Argument("revision", type=type(""), prompt="Old Revision: ")]
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        rev = vargs['revision']
        if not self.rev_regex.match(rev):
            w.set_error("Could not parse revision: %r" % rev)
            return

        cwd = os.getcwd() + os.path.sep
        path = w.buffer.path
        if path.startswith(cwd):
            path = path[len(cwd):]

        cmd = "svn diff -r %s %r" % (rev, path)
        (status, data) = commands.getstatusoutput(cmd)
        status = status >> 8

        if data:
            w.application.data_buffer("*Diff*", data, switch_to=True, modename='diff')
            w.set_error("Differences were found")
        else:
            w.set_error("No difference found")
class SvnDiff3(Method):
    '''diff the current file with the version in SVN'''
    rev_regex = re.compile('^[0-9]+$')
    args = [Argument("revision1", type=type(""), prompt="Old Revision: "),
            Argument("revision2", type=type(""), prompt="New Revision: ")]
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        rev1 = vargs['revision1']
        if not self.rev_regex.match(rev1):
            w.set_error("Could not parse revision1: %r" % rev)
            return

        rev2 = vargs['revision2']
        if not self.rev_regex.match(rev2):
            w.set_error("Could not parse revision2: %r" % rev)
            return

        cwd = os.getcwd() + os.path.sep
        path = w.buffer.path
        if path.startswith(cwd):
            path = path[len(cwd):]

        cmd = "svn diff -r %s -r %s %r" % (rev1, rev2, path)
        (status, data) = commands.getstatusoutput(cmd)
        status = status >> 8

        if data:
            w.application.data_buffer("*Diff*", data, switch_to=True, modename='diff')
            w.set_error("Differences were found")
        else:
            w.set_error("No difference found")
class SvnBlame(Method):
    '''show blame output for the current version in SVN'''
    line_re = re.compile('^ *(\d+) *([a-zA-Z0-9_]+) *([-0-9]+) *([:0-9]+) *(-\d{4}) *\(([^\)]+)\) (.*)$')
    def _execute(self, w, **vargs):
        if not hasattr(w.buffer, 'path'):
            w.set_error("Buffer has no corresponding file")
            return

        cmd = ("/usr/bin/svn", 'blame', '-v', w.buffer.path)
        pipe = Popen(cmd, stdin=PIPE, stdout=PIPE)

        lines = []
        for line in pipe.stdout:
            m = self.line_re.match(line)
            if not m:
                raise Exception, line
            (rev, user, date, t, tz, vdate, content) = m.groups()
            lines.append("%-4s %-10s %10s %s\n" % (rev, user, date, content))
        data = ''.join(lines)
            
        status = pipe.wait() >> 8
        if status == 0:
            w.application.data_buffer("*Blame*", data, switch_to=True, modename='blame')
        else:
            w.set_error("There was an error (%s)" % (status))