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rhodecode/lib/helpers.py

@@ -1,590 +1,591
 """Helper functions
 
 Consists of functions to typically be used within templates, but also
 available to Controllers. This module is available to both as 'h'.
 """
 import random
 import hashlib
 import StringIO
 from pygments.formatters import HtmlFormatter
 from pygments import highlight as code_highlight
 from pylons import url
 from pylons.i18n.translation import _, ungettext
 from vcs.utils.annotate import annotate_highlight
 from rhodecode.lib.utils import repo_name_slug
 
 from webhelpers.html import literal, HTML, escape
 from webhelpers.html.tools import *
 from webhelpers.html.builder import make_tag
 from webhelpers.html.tags import auto_discovery_link, checkbox, css_classes, \
     end_form, file, form, hidden, image, javascript_link, link_to, link_to_if, \
     link_to_unless, ol, required_legend, select, stylesheet_link, submit, text, \
     password, textarea, title, ul, xml_declaration, radio
 from webhelpers.html.tools import auto_link, button_to, highlight, js_obfuscate, \
     mail_to, strip_links, strip_tags, tag_re
 from webhelpers.number import format_byte_size, format_bit_size
 from webhelpers.pylonslib import Flash as _Flash
 from webhelpers.pylonslib.secure_form import secure_form
 from webhelpers.text import chop_at, collapse, convert_accented_entities, \
     convert_misc_entities, lchop, plural, rchop, remove_formatting, \
     replace_whitespace, urlify, truncate, wrap_paragraphs
 from webhelpers.date import time_ago_in_words
 
 from webhelpers.html.tags import _set_input_attrs, _set_id_attr, \
     convert_boolean_attrs, NotGiven
 
 def _reset(name, value=None, id=NotGiven, type="reset", **attrs):
     """Reset button
     """
     _set_input_attrs(attrs, type, name, value)
     _set_id_attr(attrs, id, name)
     convert_boolean_attrs(attrs, ["disabled"])
     return HTML.input(**attrs)
 
 reset = _reset
 
 
 def get_token():
     """Return the current authentication token, creating one if one doesn't
     already exist.
     """
     token_key = "_authentication_token"
     from pylons import session
     if not token_key in session:
         try:
             token = hashlib.sha1(str(random.getrandbits(128))).hexdigest()
         except AttributeError: # Python < 2.4
             token = hashlib.sha1(str(random.randrange(2 ** 128))).hexdigest()
         session[token_key] = token
         if hasattr(session, 'save'):
             session.save()
     return session[token_key]
 
 class _GetError(object):
     """Get error from form_errors, and represent it as span wrapped error
     message
     
     :param field_name: field to fetch errors for
     :param form_errors: form errors dict
     """
 
     def __call__(self, field_name, form_errors):
         tmpl = """<span class="error_msg">%s</span>"""
         if form_errors and form_errors.has_key(field_name):
             return literal(tmpl % form_errors.get(field_name))
 
 get_error = _GetError()
 
 class _ToolTip(object):
 
     def __call__(self, tooltip_title, trim_at=50):
         """Special function just to wrap our text into nice formatted 
         autowrapped text
         
         :param tooltip_title:
         """
 
         return wrap_paragraphs(escape(tooltip_title), trim_at)\
                        .replace('\n', '<br/>')
 
     def activate(self):
         """Adds tooltip mechanism to the given Html all tooltips have to have 
         set class `tooltip` and set attribute `tooltip_title`.
         Then a tooltip will be generated based on that. All with yui js tooltip
         """
 
         js = '''
         YAHOO.util.Event.onDOMReady(function(){
             function toolTipsId(){
                 var ids = [];
                 var tts = YAHOO.util.Dom.getElementsByClassName('tooltip');
                 
                 for (var i = 0; i < tts.length; i++) {
                     //if element doesn't not have and id autogenerate one for tooltip
                     
                     if (!tts[i].id){
                         tts[i].id='tt'+i*100;
                     }
                     ids.push(tts[i].id);
                 }
                 return ids        
             };
             var myToolTips = new YAHOO.widget.Tooltip("tooltip", { 
                 context: toolTipsId(),
                 monitorresize:false,
                 xyoffset :[0,0],
                 autodismissdelay:300000,
                 hidedelay:5,
                 showdelay:20,
             });
             
             // Set the text for the tooltip just before we display it. Lazy method
             myToolTips.contextTriggerEvent.subscribe( 
                  function(type, args) { 
 
                         var context = args[0]; 
                         
                         //positioning of tooltip
                         var tt_w = this.element.clientWidth;//tooltip width
                         var tt_h = this.element.clientHeight;//tooltip height
                         
                         var context_w = context.offsetWidth;
                         var context_h = context.offsetHeight;
                         
                         var pos_x = YAHOO.util.Dom.getX(context);
                         var pos_y = YAHOO.util.Dom.getY(context);
 
                         var display_strategy = 'right';
                         var xy_pos = [0,0];
                         switch (display_strategy){
                         
                             case 'top':
                                 var cur_x = (pos_x+context_w/2)-(tt_w/2);
                                 var cur_y = (pos_y-tt_h-4);
                                 xy_pos = [cur_x,cur_y];                                
                                 break;
                             case 'bottom':
                                 var cur_x = (pos_x+context_w/2)-(tt_w/2);
                                 var cur_y = pos_y+context_h+4;
                                 xy_pos = [cur_x,cur_y];                                
                                 break;
                             case 'left':
                                 var cur_x = (pos_x-tt_w-4);
                                 var cur_y = pos_y-((tt_h/2)-context_h/2);
                                 xy_pos = [cur_x,cur_y];                                
                                 break;
                             case 'right':
                                 var cur_x = (pos_x+context_w+4);
                                 var cur_y = pos_y-((tt_h/2)-context_h/2);
                                 xy_pos = [cur_x,cur_y];                                
                                 break;
                              default:
                                 var cur_x = (pos_x+context_w/2)-(tt_w/2);
                                 var cur_y = pos_y-tt_h-4;
                                 xy_pos = [cur_x,cur_y];                                
                                 break;                             
                                  
                         }
 
                         this.cfg.setProperty("xy",xy_pos);
 
                   });
                   
             //Mouse out 
             myToolTips.contextMouseOutEvent.subscribe(
                 function(type, args) {
                     var context = args[0];
                     
                 });
         });
         '''
         return literal(js)
 
 tooltip = _ToolTip()
 
 class _FilesBreadCrumbs(object):
 
     def __call__(self, repo_name, rev, paths):
         if isinstance(paths, str):
             paths = paths.decode('utf-8')
         url_l = [link_to(repo_name, url('files_home',
                                         repo_name=repo_name,
                                         revision=rev, f_path=''))]
         paths_l = paths.split('/')
         for cnt, p in enumerate(paths_l):
             if p != '':
                 url_l.append(link_to(p, url('files_home',
                                             repo_name=repo_name,
                                             revision=rev,
                                             f_path='/'.join(paths_l[:cnt + 1]))))
 
         return literal('/'.join(url_l))
 
 files_breadcrumbs = _FilesBreadCrumbs()
 
 class CodeHtmlFormatter(HtmlFormatter):
     """My code Html Formatter for source codes
     """
 
     def wrap(self, source, outfile):
         return self._wrap_div(self._wrap_pre(self._wrap_code(source)))
 
     def _wrap_code(self, source):
         for cnt, it in enumerate(source):
             i, t = it
             t = '<div id="L%s">%s</div>' % (cnt + 1, t)
             yield i, t
 
     def _wrap_tablelinenos(self, inner):
         dummyoutfile = StringIO.StringIO()
         lncount = 0
         for t, line in inner:
             if t:
                 lncount += 1
             dummyoutfile.write(line)
 
         fl = self.linenostart
         mw = len(str(lncount + fl - 1))
         sp = self.linenospecial
         st = self.linenostep
         la = self.lineanchors
         aln = self.anchorlinenos
         nocls = self.noclasses
         if sp:
             lines = []
 
             for i in range(fl, fl + lncount):
                 if i % st == 0:
                     if i % sp == 0:
                         if aln:
                             lines.append('<a href="#%s%d" class="special">%*d</a>' %
                                          (la, i, mw, i))
                         else:
                             lines.append('<span class="special">%*d</span>' % (mw, i))
                     else:
                         if aln:
                             lines.append('<a href="#%s%d">%*d</a>' % (la, i, mw, i))
                         else:
                             lines.append('%*d' % (mw, i))
                 else:
                     lines.append('')
             ls = '\n'.join(lines)
         else:
             lines = []
             for i in range(fl, fl + lncount):
                 if i % st == 0:
                     if aln:
                         lines.append('<a href="#%s%d">%*d</a>' % (la, i, mw, i))
                     else:
                         lines.append('%*d' % (mw, i))
                 else:
                     lines.append('')
             ls = '\n'.join(lines)
 
         # in case you wonder about the seemingly redundant <div> here: since the
         # content in the other cell also is wrapped in a div, some browsers in
         # some configurations seem to mess up the formatting...
         if nocls:
             yield 0, ('<table class="%stable">' % self.cssclass +
                       '<tr><td><div class="linenodiv" '
                       'style="background-color: #f0f0f0; padding-right: 10px">'
                       '<pre style="line-height: 125%">' +
                       ls + '</pre></div></td><td class="code">')
         else:
             yield 0, ('<table class="%stable">' % self.cssclass +
                       '<tr><td class="linenos"><div class="linenodiv"><pre>' +
                       ls + '</pre></div></td><td class="code">')
         yield 0, dummyoutfile.getvalue()
         yield 0, '</td></tr></table>'
 
 
 def pygmentize(filenode, **kwargs):
     """pygmentize function using pygments
     
     :param filenode:
     """
 
     return literal(code_highlight(filenode.content,
                                   filenode.lexer, CodeHtmlFormatter(**kwargs)))
 
 def pygmentize_annotation(filenode, **kwargs):
     """pygmentize function for annotation
     
     :param filenode:
     """
 
     color_dict = {}
     def gen_color(n=10000):
         """generator for getting n of evenly distributed colors using 
         hsv color and golden ratio. It always return same order of colors
         
         :returns: RGB tuple
         """
         import colorsys
         golden_ratio = 0.618033988749895
         h = 0.22717784590367374
 
         for c in xrange(n):
             h += golden_ratio
             h %= 1
             HSV_tuple = [h, 0.95, 0.95]
             RGB_tuple = colorsys.hsv_to_rgb(*HSV_tuple)
             yield map(lambda x:str(int(x * 256)), RGB_tuple)
 
     cgenerator = gen_color()
 
     def get_color_string(cs):
         if color_dict.has_key(cs):
             col = color_dict[cs]
         else:
             col = color_dict[cs] = cgenerator.next()
         return "color: rgb(%s)! important;" % (', '.join(col))
 
     def url_func(changeset):
         tooltip_html = "<div style='font-size:0.8em'><b>Author:</b>" + \
         " %s<br/><b>Date:</b> %s</b><br/><b>Message:</b> %s<br/></div>"
 
         tooltip_html = tooltip_html % (changeset.author,
                                                changeset.date,
                                                tooltip(changeset.message))
         lnk_format = '%5s:%s' % ('r%s' % changeset.revision,
                                  short_id(changeset.raw_id))
         uri = link_to(
                 lnk_format,
                 url('changeset_home', repo_name=changeset.repository.name,
                     revision=changeset.raw_id),
                 style=get_color_string(changeset.raw_id),
                 class_='tooltip',
                 title=tooltip_html
               )
 
         uri += '\n'
         return uri
     return literal(annotate_highlight(filenode, url_func, **kwargs))
 
 def get_changeset_safe(repo, rev):
     from vcs.backends.base import BaseRepository
     from vcs.exceptions import RepositoryError
     if not isinstance(repo, BaseRepository):
         raise Exception('You must pass an Repository '
                         'object as first argument got %s', type(repo))
 
     try:
         cs = repo.get_changeset(rev)
     except RepositoryError:
         from rhodecode.lib.utils import EmptyChangeset
         cs = EmptyChangeset()
     return cs
 
 
 def is_following_repo(repo_name, user_id):
     from rhodecode.model.scm import ScmModel
     return ScmModel().is_following_repo(repo_name, user_id)
 
 flash = _Flash()
 
 
 #==============================================================================
 # MERCURIAL FILTERS available via h.
 #==============================================================================
 from mercurial import util
 from mercurial.templatefilters import person as _person
 
 def _age(curdate):
     """turns a datetime into an age string."""
 
     if not curdate:
         return ''
 
     from datetime import timedelta, datetime
 
     agescales = [("year", 3600 * 24 * 365),
                  ("month", 3600 * 24 * 30),
                  ("day", 3600 * 24),
                  ("hour", 3600),
                  ("minute", 60),
                  ("second", 1), ]
 
     age = datetime.now() - curdate
     age_seconds = (age.days * agescales[2][1]) + age.seconds
     pos = 1
     for scale in agescales:
         if scale[1] <= age_seconds:
             if pos == 6:pos = 5
             return time_ago_in_words(curdate, agescales[pos][0]) + ' ' + _('ago')
         pos += 1
 
     return _('just now')
 
 age = lambda  x:_age(x)
 capitalize = lambda x: x.capitalize()
 email = util.email
 email_or_none = lambda x: util.email(x) if util.email(x) != x else None
 person = lambda x: _person(x)
 short_id = lambda x: x[:12]
 
 
 def bool2icon(value):
     """Returns True/False values represented as small html image of true/false
     icons
     
     :param value: bool value
     """
 
     if value is True:
         return HTML.tag('img', src="/images/icons/accept.png", alt=_('True'))
 
     if value is False:
         return HTML.tag('img', src="/images/icons/cancel.png", alt=_('False'))
 
     return value
 
 
 def action_parser(user_log):
     """This helper will map the specified string action into translated
     fancy names with icons and links
     
     :param user_log: user log instance
     """
 
     action = user_log.action
     action_params = ' '
 
     x = action.split(':')
 
     if len(x) > 1:
         action, action_params = x
 
     def get_cs_links():
         revs_limit = 5 #display this amount always
         revs_top_limit = 50 #show upto this amount of changesets hidden
         revs = action_params.split(',')
         repo_name = user_log.repository.repo_name
         from rhodecode.model.scm import ScmModel
 
         message = lambda rev: get_changeset_safe(ScmModel().get(repo_name),
                                                  rev).message
 
         cs_links = " " + ', '.join ([link_to(rev,
                 url('changeset_home',
                 repo_name=repo_name,
                 revision=rev), title=tooltip(message(rev)),
                 class_='tooltip') for rev in revs[:revs_limit] ])
 
         compare_view = (' <div class="compare_view tooltip" title="%s">'
                         '<a href="%s">%s</a> '
                         '</div>' % (_('Show all combined changesets %s->%s' \
                                       % (revs[0], revs[-1])),
                                     url('changeset_home', repo_name=repo_name,
                                         revision='%s...%s' % (revs[0], revs[-1])
                                     ),
                                     _('compare view'))
                         )
 
         if len(revs) > revs_limit:
             uniq_id = revs[0]
             html_tmpl = ('<span> %s '
             '<a class="show_more" id="_%s" href="#more">%s</a> '
             '%s</span>')
             cs_links += html_tmpl % (_('and'), uniq_id, _('%s more') \
                                         % (len(revs) - revs_limit),
                                         _('revisions'))
 
             html_tmpl = '<span id="%s" style="display:none"> %s </span>'
             cs_links += html_tmpl % (uniq_id, ', '.join([link_to(rev,
                 url('changeset_home',
                 repo_name=repo_name, revision=rev),
                 title=message(rev), class_='tooltip')
                 for rev in revs[revs_limit:revs_top_limit]]))
+        if len(revs) > 1:
         cs_links += compare_view
         return cs_links
 
     def get_fork_name():
         from rhodecode.model.scm import ScmModel
         repo_name = action_params
         repo = ScmModel().get(repo_name)
         if repo is None:
             return repo_name
         return link_to(action_params, url('summary_home',
                                           repo_name=repo.name,),
                                           title=repo.dbrepo.description)
 
     map = {'user_deleted_repo':(_('User [deleted] repository'), None),
            'user_created_repo':(_('User [created] repository'), None),
            'user_forked_repo':(_('User [forked] repository as:'), get_fork_name),
            'user_updated_repo':(_('User [updated] repository'), None),
            'admin_deleted_repo':(_('Admin [delete] repository'), None),
            'admin_created_repo':(_('Admin [created] repository'), None),
            'admin_forked_repo':(_('Admin [forked] repository'), None),
            'admin_updated_repo':(_('Admin [updated] repository'), None),
            'push':(_('[Pushed]'), get_cs_links),
            'pull':(_('[Pulled]'), None),
            'started_following_repo':(_('User [started following] repository'), None),
            'stopped_following_repo':(_('User [stopped following] repository'), None),
             }
 
     action_str = map.get(action, action)
     action = action_str[0].replace('[', '<span class="journal_highlight">')\
                    .replace(']', '</span>')
     if action_str[1] is not None:
         action = action + " " + action_str[1]()
 
     return literal(action)
 
 def action_parser_icon(user_log):
     action = user_log.action
     action_params = None
     x = action.split(':')
 
     if len(x) > 1:
         action, action_params = x
 
     tmpl = """<img src="/images/icons/%s" alt="%s"/>"""
     map = {'user_deleted_repo':'database_delete.png',
            'user_created_repo':'database_add.png',
            'user_forked_repo':'arrow_divide.png',
            'user_updated_repo':'database_edit.png',
            'admin_deleted_repo':'database_delete.png',
            'admin_created_repo':'database_add.png',
            'admin_forked_repo':'arrow_divide.png',
            'admin_updated_repo':'database_edit.png',
            'push':'script_add.png',
            'pull':'down_16.png',
            'started_following_repo':'heart_add.png',
            'stopped_following_repo':'heart_delete.png',
             }
     return literal(tmpl % (map.get(action, action), action))
 
 
 #==============================================================================
 # PERMS
 #==============================================================================
 from rhodecode.lib.auth import HasPermissionAny, HasPermissionAll, \
 HasRepoPermissionAny, HasRepoPermissionAll
 
 #==============================================================================
 # GRAVATAR URL
 #==============================================================================
 import hashlib
 import urllib
 from pylons import request
 
 def gravatar_url(email_address, size=30):
     ssl_enabled = 'https' == request.environ.get('wsgi.url_scheme')
     default = 'identicon'
     baseurl_nossl = "http://www.gravatar.com/avatar/"
     baseurl_ssl = "https://secure.gravatar.com/avatar/"
     baseurl = baseurl_ssl if ssl_enabled else baseurl_nossl
 
 
     # construct the url
     gravatar_url = baseurl + hashlib.md5(email_address.lower()).hexdigest() + "?"
     gravatar_url += urllib.urlencode({'d':default, 's':str(size)})
 
     return gravatar_url
 
 def safe_unicode(str):
     """safe unicode function. In case of UnicodeDecode error we try to return
     unicode with errors replace, if this failes we return unicode with 
     string_escape decoding """
 
     try:
         u_str = unicode(str)
     except UnicodeDecodeError:
         try:
             u_str = unicode(str, 'utf-8', 'replace')
         except UnicodeDecodeError:
             #incase we have a decode error just represent as byte string
             u_str = unicode(str(str).encode('string_escape'))
 
     return u_str
 
 def changed_tooltip(nodes):
     if nodes:
         pref = ': <br/> '
         suf = ''
         if len(nodes) > 30:
             suf = '<br/>' + _(' and %s more') % (len(nodes) - 30)
         return literal(pref + '<br/> '.join([x.path for x in nodes[:30]]) + suf)
     else:
         return ': ' + _('No Files')