indygreg created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REVISION SUMMARY
  The "style" parameter is kind of wonky because it is explicitly
  set and has lookups in random locations.
  
  Let's port it to qsparams first because it isn't straightforward.
  
  There is subtle change in behavior. But I don't think it is worth
  calling out in a BC.
  
  Our multidict's __getitem__ returns the last set value for a key,
  not the first. So if the query string set a variable multiple times,
  before we would get the first value and now we would get the last
  value. It makes no sense to specify these things multiple times.
  And I think last write wins is more sensible than first write wins.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2779

AFFECTED FILES
  mercurial/hgweb/hgweb_mod.py
  mercurial/hgweb/hgwebdir_mod.py
  mercurial/hgweb/webcommands.py
  mercurial/hgweb/webutil.py

CHANGE DETAILS

diff --git a/mercurial/hgweb/webutil.py b/mercurial/hgweb/webutil.py
--- a/mercurial/hgweb/webutil.py
+++ b/mercurial/hgweb/webutil.py
@@ -438,8 +438,8 @@
         basectx = ctx.p1()
 
     style = web.config('web', 'style')
-    if 'style' in req.form:
-        style = req.form['style'][0]
+    if 'style' in req.req.qsparams:
+        style = req.req.qsparams['style']
 
     diff = diffs(web, tmpl, ctx, basectx, None, style)
 
diff --git a/mercurial/hgweb/webcommands.py b/mercurial/hgweb/webcommands.py
--- a/mercurial/hgweb/webcommands.py
+++ b/mercurial/hgweb/webcommands.py
@@ -762,8 +762,8 @@
     basectx = ctx.p1()
 
     style = web.config('web', 'style')
-    if 'style' in req.form:
-        style = req.form['style'][0]
+    if 'style' in req.req.qsparams:
+        style = req.req.qsparams['style']
 
     diffs = webutil.diffs(web, tmpl, ctx, basectx, [path], style)
     if fctx is not None:
@@ -1011,8 +1011,8 @@
     entries = []
 
     diffstyle = web.config('web', 'style')
-    if 'style' in req.form:
-        diffstyle = req.form['style'][0]
+    if 'style' in req.req.qsparams:
+        diffstyle = req.req.qsparams['style']
 
     def diff(fctx, linerange=None):
         ctx = fctx.changectx()
diff --git a/mercurial/hgweb/hgwebdir_mod.py b/mercurial/hgweb/hgwebdir_mod.py
--- a/mercurial/hgweb/hgwebdir_mod.py
+++ b/mercurial/hgweb/hgwebdir_mod.py
@@ -510,7 +510,7 @@
             url += '/'
 
         vars = {}
-        styles, (style, mapfile) = hgweb_mod.getstyle(wsgireq, config,
+        styles, (style, mapfile) = hgweb_mod.getstyle(wsgireq.req, config,
                                                       self.templatepath)
         if style == styles[0]:
             vars['style'] = style
diff --git a/mercurial/hgweb/hgweb_mod.py b/mercurial/hgweb/hgweb_mod.py
--- a/mercurial/hgweb/hgweb_mod.py
+++ b/mercurial/hgweb/hgweb_mod.py
@@ -53,9 +53,8 @@
 ))
 
 def getstyle(req, configfn, templatepath):
-    fromreq = req.form.get('style', [None])[0]
     styles = (
-        fromreq,
+        req.qsparams.get('style', None),
         configfn('web', 'style'),
         'paper',
     )
@@ -160,7 +159,7 @@
         # figure out which style to use
 
         vars = {}
-        styles, (style, mapfile) = getstyle(wsgireq, self.config,
+        styles, (style, mapfile) = getstyle(wsgireq.req, self.config,
                                             self.templatepath)
         if style == styles[0]:
             vars['style'] = style
@@ -337,7 +336,7 @@
             cmd = args.pop(0)
             style = cmd.rfind('-')
             if style != -1:
-                wsgireq.form['style'] = [cmd[:style]]
+                req.qsparams['style'] = cmd[:style]
                 cmd = cmd[style + 1:]
 
             # avoid accepting e.g. style parameter as command
@@ -355,7 +354,7 @@
 
             ua = req.headers.get('User-Agent', '')
             if cmd == 'rev' and 'mercurial' in ua:
-                wsgireq.form['style'] = ['raw']
+                req.qsparams['style'] = 'raw'
 
             if cmd == 'archive':
                 fn = wsgireq.form['node'][0]
@@ -389,7 +388,7 @@
             if cmd not in webcommands.__all__:
                 msg = 'no such method: %s' % cmd
                 raise ErrorResponse(HTTP_BAD_REQUEST, msg)
-            elif cmd == 'file' and 'raw' in wsgireq.form.get('style', []):
+            elif cmd == 'file' and req.qsparams.get('style') == 'raw':
                 rctx.ctype = ctype
                 content = webcommands.rawfile(rctx, wsgireq, tmpl)
             else:



To: indygreg, #hg-reviewers
Cc: mercurial-devel
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