diffs: don't use highlite on the new ops lines

rhodecode/lib/codeblocks.py

@@ -20,12 +20,12 b''
 
 import logging
 import difflib
-import string
 from itertools import groupby
 
 from pygments import lex
 from pygments.formatters.html import _get_ttype_class as pygment_token_class
 from pygments.lexers.special import TextLexer, Token
+from pygments.lexers import get_lexer_by_name
 
 from rhodecode.lib.helpers import (
     get_lexer_for_filenode, html_escape, get_custom_lexer)
@@ -34,7 +34,7 b' from rhodecode.lib.vcs.nodes import File'
 from rhodecode.lib.vcs.exceptions import VCSError, NodeDoesNotExistError
 from rhodecode.lib.diff_match_patch import diff_match_patch
 from rhodecode.lib.diffs import LimitedDiffContainer, DEL_FILENODE, BIN_FILENODE
-from pygments.lexers import get_lexer_by_name
+
 
 plain_text_lexer = get_lexer_by_name(
     'text', stripall=False, stripnl=False, ensurenl=False)
@@ -449,7 +449,10 b' class DiffSet(object):'
         target_lexer = plain_text_lexer
 
         if not patch['stats']['binary']:
-            if self.highlight_mode == self.HL_REAL:
+            node_hl_mode = self.HL_NONE if patch['chunks'] == [] else None
+            hl_mode = node_hl_mode or self.highlight_mode
+
+            if hl_mode == self.HL_REAL:
                 if (source_filename and patch['operation'] in ('D', 'M')
                     and source_filename not in self.source_nodes):
                         self.source_nodes[source_filename] = (
@@ -460,7 +463,7 b' class DiffSet(object):'
                         self.target_nodes[target_filename] = (
                             self.target_node_getter(target_filename))
 
-            elif self.highlight_mode == self.HL_FAST:
+            elif hl_mode == self.HL_FAST:
                 source_lexer = self._get_lexer_for_filename(source_filename)
                 target_lexer = self._get_lexer_for_filename(target_filename)
 
@@ -510,8 +513,8 b' class DiffSet(object):'
             'hunk_ops': None,
             'diffset': self,
         })
-
-        for hunk in patch['chunks'][1:]:
+        file_chunks = patch['chunks'][1:]
+        for hunk in file_chunks:
             hunkbit = self.parse_hunk(hunk, source_file, target_file)
             hunkbit.source_file_path = source_file_path
             hunkbit.target_file_path = target_file_path
@@ -519,6 +522,7 b' class DiffSet(object):'
 
         # Simulate hunk on OPS type line which doesn't really contain any diff
         # this allows commenting on those
+        if not file_chunks:
         actions = []
         for op_id, op_text in filediff.patch['stats']['ops'].items():
             if op_id == DEL_FILENODE:
@@ -527,13 +531,13 b' class DiffSet(object):'
                 actions.append(u'binary diff hidden')
             else:
                 actions.append(safe_unicode(op_text))
-        action_line = u'FILE WITHOUT CONTENT: ' + \
-                      u', '.join(map(string.upper, actions)) or u'UNDEFINED_ACTION'
+            action_line = u'NO CONTENT: ' + \
+                          u', '.join(actions) or u'UNDEFINED_ACTION'
 
         hunk_ops = {'source_length': 0, 'source_start': 0,
                     'lines': [
                         {'new_lineno': 0, 'old_lineno': 1,
-                         'action': 'unmod', 'line': action_line}
+                             'action': 'unmod-no-hl', 'line': action_line}
                     ],
                     'section_header': u'', 'target_start': 1, 'target_length': 1}
 
@@ -555,10 +559,10 b' class DiffSet(object):'
         before, after = [], []
 
         for line in hunk['lines']:
-
-            if line['action'] == 'unmod':
+            if line['action'] in ['unmod', 'unmod-no-hl']:
+                no_hl = line['action'] == 'unmod-no-hl'
                 result.lines.extend(
-                    self.parse_lines(before, after, source_file, target_file))
+                    self.parse_lines(before, after, source_file, target_file, no_hl=no_hl))
                 after.append(line)
                 before.append(line)
             elif line['action'] == 'add':
@@ -570,14 +574,18 b' class DiffSet(object):'
             elif line['action'] == 'new-no-nl':
                 after.append(line)
 
+        all_actions = [x['action'] for x in after] + [x['action'] for x in before]
+        no_hl = {x for x in all_actions} == {'unmod-no-hl'}
         result.lines.extend(
-            self.parse_lines(before, after, source_file, target_file))
+            self.parse_lines(before, after, source_file, target_file, no_hl=no_hl))
+        # NOTE(marcink): we must keep list() call here so we can cache the result...
         result.unified = list(self.as_unified(result.lines))
         result.sideside = result.lines
 
         return result
 
-    def parse_lines(self, before_lines, after_lines, source_file, target_file):
+    def parse_lines(self, before_lines, after_lines, source_file, target_file,
+                    no_hl=False):
         # TODO: dan: investigate doing the diff comparison and fast highlighting
         # on the entire before and after buffered block lines rather than by
         # line, this means we can get better 'fast' highlighting if the context
@@ -621,9 +629,8 b' class DiffSet(object):'
                     before_tokens = [('nonl', before['line'])]
                 else:
                     before_tokens = self.get_line_tokens(
-                        line_text=before['line'],
-                        line_number=before['old_lineno'],
-                        file=source_file)
+                        line_text=before['line'], line_number=before['old_lineno'],
+                        input_file=source_file, no_hl=no_hl)
                 original.lineno = before['old_lineno']
                 original.content = before['line']
                 original.action = self.action_to_op(before['action'])
@@ -637,13 +644,12 b' class DiffSet(object):'
                 else:
                     after_tokens = self.get_line_tokens(
                         line_text=after['line'], line_number=after['new_lineno'],
-                        file=target_file)
+                        input_file=target_file, no_hl=no_hl)
                 modified.lineno = after['new_lineno']
                 modified.content = after['line']
                 modified.action = self.action_to_op(after['action'])
 
-                modified.get_comment_args = (
-                    target_file, 'n', after['new_lineno'])
+                modified.get_comment_args = (target_file, 'n', after['new_lineno'])
 
             # diff the lines
             if before_tokens and after_tokens:
@@ -672,24 +678,25 b' class DiffSet(object):'
 
         return lines
 
-    def get_line_tokens(self, line_text, line_number, file=None):
+    def get_line_tokens(self, line_text, line_number, input_file=None, no_hl=False):
         filenode = None
         filename = None
 
-        if isinstance(file, basestring):
-            filename = file
-        elif isinstance(file, FileNode):
-            filenode = file
-            filename = file.unicode_path
+        if isinstance(input_file, basestring):
+            filename = input_file
+        elif isinstance(input_file, FileNode):
+            filenode = input_file
+            filename = input_file.unicode_path
 
-        if self.highlight_mode == self.HL_REAL and filenode:
+        hl_mode = self.HL_NONE if no_hl else self.highlight_mode
+        if hl_mode == self.HL_REAL and filenode:
             lexer = self._get_lexer_for_filename(filename)
-            file_size_allowed = file.size < self.max_file_size_limit
+            file_size_allowed = input_file.size < self.max_file_size_limit
             if line_number and file_size_allowed:
                 return self.get_tokenized_filenode_line(
-                    file, line_number, lexer)
+                    input_file, line_number, lexer)
 
-        if self.highlight_mode in (self.HL_REAL, self.HL_FAST) and filename:
+        if hl_mode in (self.HL_REAL, self.HL_FAST) and filename:
             lexer = self._get_lexer_for_filename(filename)
             return list(tokenize_string(line_text, lexer))
 
@@ -707,6 +714,7 b' class DiffSet(object):'
             'add': '+',
             'del': '-',
             'unmod': ' ',
+            'unmod-no-hl': ' ',
             'old-no-nl': ' ',
             'new-no-nl': ' ',
         }.get(action, action)

rhodecode/lib/diffs.py

@@ -1136,7 +1136,7 b' class DiffLimitExceeded(Exception):'
 
 # NOTE(marcink): if diffs.mako change, probably this
 # needs a bump to next version
-CURRENT_DIFF_VERSION = 'v1'
+CURRENT_DIFF_VERSION = 'v2'
 
 
 def _cleanup_cache_file(cached_diff_file):