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From: Stefan Beller <sbeller@google.com>
To: Brandon Williams <bmwill@google.com>
Cc: "git@vger.kernel.org" <git@vger.kernel.org>,
	Junio C Hamano <gitster@pobox.com>,
	Duy Nguyen <pclouds@gmail.com>
Subject: Re: [PATCH 25/27] attr: store attribute stacks in hashmap
Date: Wed, 18 Jan 2017 12:45:53 -0800	[thread overview]
Message-ID: <CAGZ79kbUcW1f8eiAFcEsaMMeTFwP6BXXwhz3sYxYH1cNo=BU-A@mail.gmail.com> (raw)
In-Reply-To: <CAGZ79kZv2=dNt=TeJXbac4S20WcdOZo=iVa-b+4zkOoGVM1OFA@mail.gmail.com>

On Wed, Jan 18, 2017 at 12:39 PM, Stefan Beller <sbeller@google.com> wrote:
> On Thu, Jan 12, 2017 at 3:53 PM, Brandon Williams <bmwill@google.com> wrote:
>> -static void prepare_attr_stack(const char *path, int dirlen)
>> +/*
>> + * This funciton should only be called from 'get_attr_stack()', which already
>
> "function"
>
>> +               /* system-wide frame */
>> +               if (git_attr_system()) {
>> +                       e = read_attr_from_file(git_etc_gitattributes(), 1);
>
> read_attr_from_file may return NULL, so we'd have to treat this similar
> to below "root directory", i.e. xcalloc for an empty frame?
>
>> +
>> +               /* root directory */
>> +               if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
>> +                       e = read_attr(GITATTRIBUTES_FILE, 1);
>> +               } else {
>> +                       e = xcalloc(1, sizeof(struct attr_stack));
>> +               }
>> +               key = "";
>> +               push_stack(&core, e, key, strlen(key));
>
> If this is a bare repo, could we just omit this frame instead of pushing
> an empty xcalloc'd frame? (Same for the stack frames of system wide
> and home dir) ?

The next patch moves this issue into the read_attr function.

So in the end we'd either need to fix read_attr_from_file to return
    res = xcalloc(1, sizeof(*res));
if (!fp), or we need to handle NULLs appropriately in 'core_attr_stack' ?

  reply	other threads:[~2017-01-18 21:21 UTC|newest]

Thread overview: 111+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-12 23:53 [PATCH 00/27] Revamp the attribute system; another round Brandon Williams
2017-01-12 23:53 ` [PATCH 01/27] commit.c: use strchrnul() to scan for one line Brandon Williams
2017-01-12 23:53 ` [PATCH 02/27] attr.c: " Brandon Williams
2017-01-12 23:53 ` [PATCH 03/27] attr.c: update a stale comment on "struct match_attr" Brandon Williams
2017-01-12 23:53 ` [PATCH 04/27] attr.c: explain the lack of attr-name syntax check in parse_attr() Brandon Williams
2017-01-12 23:53 ` [PATCH 05/27] attr.c: complete a sentence in a comment Brandon Williams
2017-01-12 23:53 ` [PATCH 06/27] attr.c: mark where #if DEBUG ends more clearly Brandon Williams
2017-01-12 23:53 ` [PATCH 07/27] attr.c: simplify macroexpand_one() Brandon Williams
2017-01-12 23:53 ` [PATCH 08/27] attr.c: tighten constness around "git_attr" structure Brandon Williams
2017-01-12 23:53 ` [PATCH 09/27] attr.c: plug small leak in parse_attr_line() Brandon Williams
2017-01-12 23:53 ` [PATCH 10/27] attr: support quoting pathname patterns in C style Brandon Williams
2017-01-12 23:53 ` [PATCH 11/27] attr.c: add push_stack() helper Brandon Williams
2017-01-12 23:53 ` [PATCH 12/27] Documentation: fix a typo Brandon Williams
2017-01-12 23:53 ` [PATCH 13/27] attr.c: outline the future plans by heavily commenting Brandon Williams
2017-01-12 23:53 ` [PATCH 14/27] attr: rename function and struct related to checking attributes Brandon Williams
2017-01-12 23:53 ` [PATCH 15/27] attr: (re)introduce git_check_attr() and struct attr_check Brandon Williams
2017-01-12 23:53 ` [PATCH 16/27] attr: convert git_all_attrs() to use "struct attr_check" Brandon Williams
2017-01-12 23:53 ` [PATCH 17/27] attr: convert git_check_attrs() callers to use the new API Brandon Williams
2017-01-12 23:53 ` [PATCH 18/27] attr: retire git_check_attrs() API Brandon Williams
2017-01-12 23:53 ` [PATCH 19/27] attr: pass struct attr_check to collect_some_attrs Brandon Williams
2017-01-12 23:53 ` [PATCH 20/27] attr: change validity check for attribute names to use positive logic Brandon Williams
2017-01-12 23:53 ` [PATCH 21/27] attr: use hashmap for attribute dictionary Brandon Williams
2017-01-18 20:20   ` Stefan Beller
2017-01-18 20:23     ` Brandon Williams
2017-01-12 23:53 ` [PATCH 22/27] attr: eliminate global check_all_attr array Brandon Williams
2017-01-12 23:53 ` [PATCH 23/27] attr: remove maybe-real, maybe-macro from git_attr Brandon Williams
2017-01-12 23:53 ` [PATCH 24/27] attr: tighten const correctness with git_attr and match_attr Brandon Williams
2017-01-12 23:53 ` [PATCH 25/27] attr: store attribute stacks in hashmap Brandon Williams
2017-01-13 21:20   ` Junio C Hamano
2017-01-18 20:34     ` Brandon Williams
2017-01-23 18:08       ` Brandon Williams
2017-01-18 20:39   ` Stefan Beller
2017-01-18 20:45     ` Stefan Beller [this message]
2017-01-18 20:50     ` Brandon Williams
2017-01-12 23:53 ` [PATCH 26/27] attr: push the bare repo check into read_attr() Brandon Williams
2017-01-12 23:53 ` [PATCH 27/27] attr: reformat git_attr_set_direction() function Brandon Williams
2017-01-15 23:47 ` [PATCH 00/27] Revamp the attribute system; another round Junio C Hamano
2017-01-16  8:10   ` Jeff King
2017-01-23 20:34 ` [PATCH v2 " Brandon Williams
2017-01-23 20:34   ` [PATCH v2 01/27] commit.c: use strchrnul() to scan for one line Brandon Williams
2017-01-23 20:35   ` [PATCH v2 02/27] attr.c: " Brandon Williams
2017-01-23 20:35   ` [PATCH v2 03/27] attr.c: update a stale comment on "struct match_attr" Brandon Williams
2017-01-23 20:35   ` [PATCH v2 04/27] attr.c: explain the lack of attr-name syntax check in parse_attr() Brandon Williams
2017-01-23 20:35   ` [PATCH v2 05/27] attr.c: complete a sentence in a comment Brandon Williams
2017-01-23 20:35   ` [PATCH v2 06/27] attr.c: mark where #if DEBUG ends more clearly Brandon Williams
2017-01-23 20:35   ` [PATCH v2 07/27] attr.c: simplify macroexpand_one() Brandon Williams
2017-01-23 20:35   ` [PATCH v2 08/27] attr.c: tighten constness around "git_attr" structure Brandon Williams
2017-01-23 20:35   ` [PATCH v2 09/27] attr.c: plug small leak in parse_attr_line() Brandon Williams
2017-01-23 20:35   ` [PATCH v2 10/27] attr: support quoting pathname patterns in C style Brandon Williams
2017-01-23 20:35   ` [PATCH v2 11/27] attr.c: add push_stack() helper Brandon Williams
2017-01-23 20:35   ` [PATCH v2 12/27] Documentation: fix a typo Brandon Williams
2017-01-23 20:35   ` [PATCH v2 13/27] attr.c: outline the future plans by heavily commenting Brandon Williams
2017-01-23 20:35   ` [PATCH v2 14/27] attr: rename function and struct related to checking attributes Brandon Williams
2017-01-23 20:35   ` [PATCH v2 15/27] attr: (re)introduce git_check_attr() and struct attr_check Brandon Williams
2017-01-23 20:35   ` [PATCH v2 16/27] attr: convert git_all_attrs() to use "struct attr_check" Brandon Williams
2017-01-23 20:35   ` [PATCH v2 17/27] attr: convert git_check_attrs() callers to use the new API Brandon Williams
2017-01-23 20:35   ` [PATCH v2 18/27] attr: retire git_check_attrs() API Brandon Williams
2017-01-23 20:35   ` [PATCH v2 19/27] attr: pass struct attr_check to collect_some_attrs Brandon Williams
2017-01-23 20:35   ` [PATCH v2 20/27] attr: change validity check for attribute names to use positive logic Brandon Williams
2017-01-23 20:35   ` [PATCH v2 21/27] attr: use hashmap for attribute dictionary Brandon Williams
2017-01-23 20:35   ` [PATCH v2 22/27] attr: eliminate global check_all_attr array Brandon Williams
2017-01-23 21:11     ` Junio C Hamano
2017-01-23 20:35   ` [PATCH v2 23/27] attr: remove maybe-real, maybe-macro from git_attr Brandon Williams
2017-01-23 20:35   ` [PATCH v2 24/27] attr: tighten const correctness with git_attr and match_attr Brandon Williams
2017-01-23 20:35   ` [PATCH v2 25/27] attr: store attribute stack in attr_check structure Brandon Williams
2017-01-23 21:42     ` Junio C Hamano
2017-01-23 22:06       ` Brandon Williams
2017-01-24  1:11         ` Brandon Williams
2017-01-24  2:28           ` Junio C Hamano
2017-01-25 19:57             ` Brandon Williams
2017-01-25 20:10               ` Stefan Beller
2017-01-25 20:14               ` Junio C Hamano
2017-01-25 21:54                 ` Brandon Williams
2017-01-25 23:19                   ` Brandon Williams
2017-01-23 20:35   ` [PATCH v2 26/27] attr: push the bare repo check into read_attr() Brandon Williams
2017-01-23 20:35   ` [PATCH v2 27/27] attr: reformat git_attr_set_direction() function Brandon Williams
2017-01-28  2:01   ` [PATCH v3 00/27] Revamp the attribute system; another round Brandon Williams
2017-01-28  2:01     ` [PATCH v3 01/27] commit.c: use strchrnul() to scan for one line Brandon Williams
2017-01-28  2:01     ` [PATCH v3 02/27] attr.c: " Brandon Williams
2017-01-28  2:01     ` [PATCH v3 03/27] attr.c: update a stale comment on "struct match_attr" Brandon Williams
2017-01-28  2:01     ` [PATCH v3 04/27] attr.c: explain the lack of attr-name syntax check in parse_attr() Brandon Williams
2017-01-28  2:01     ` [PATCH v3 05/27] attr.c: complete a sentence in a comment Brandon Williams
2017-01-28  2:01     ` [PATCH v3 06/27] attr.c: mark where #if DEBUG ends more clearly Brandon Williams
2017-01-28  2:01     ` [PATCH v3 07/27] attr.c: simplify macroexpand_one() Brandon Williams
2017-01-28  2:01     ` [PATCH v3 08/27] attr.c: tighten constness around "git_attr" structure Brandon Williams
2017-01-28  2:01     ` [PATCH v3 09/27] attr.c: plug small leak in parse_attr_line() Brandon Williams
2017-01-28  2:01     ` [PATCH v3 10/27] attr: support quoting pathname patterns in C style Brandon Williams
2017-01-28  2:01     ` [PATCH v3 11/27] attr.c: add push_stack() helper Brandon Williams
2017-01-28  2:01     ` [PATCH v3 12/27] Documentation: fix a typo Brandon Williams
2017-01-28  2:01     ` [PATCH v3 13/27] attr.c: outline the future plans by heavily commenting Brandon Williams
2017-01-28  2:01     ` [PATCH v3 14/27] attr: rename function and struct related to checking attributes Brandon Williams
2017-01-28  2:01     ` [PATCH v3 15/27] attr: (re)introduce git_check_attr() and struct attr_check Brandon Williams
2017-01-30 18:05       ` Brandon Williams
2017-01-28  2:01     ` [PATCH v3 16/27] attr: convert git_all_attrs() to use "struct attr_check" Brandon Williams
2017-01-28 23:50       ` Stefan Beller
2017-01-29  2:44         ` Brandon Williams
2017-01-30 18:06       ` Brandon Williams
2017-01-28  2:01     ` [PATCH v3 17/27] attr: convert git_check_attrs() callers to use the new API Brandon Williams
2017-01-28  2:01     ` [PATCH v3 18/27] attr: retire git_check_attrs() API Brandon Williams
2017-01-28  2:01     ` [PATCH v3 19/27] attr: pass struct attr_check to collect_some_attrs Brandon Williams
2017-01-28  2:02     ` [PATCH v3 20/27] attr: change validity check for attribute names to use positive logic Brandon Williams
2017-01-28  2:02     ` [PATCH v3 21/27] attr: use hashmap for attribute dictionary Brandon Williams
2017-01-28  2:02     ` [PATCH v3 22/27] attr: eliminate global check_all_attr array Brandon Williams
2017-01-28  2:02     ` [PATCH v3 23/27] attr: remove maybe-real, maybe-macro from git_attr Brandon Williams
2017-01-28  2:02     ` [PATCH v3 24/27] attr: tighten const correctness with git_attr and match_attr Brandon Williams
2017-01-28  2:02     ` [PATCH v3 25/27] attr: store attribute stack in attr_check structure Brandon Williams
2017-01-28  2:02     ` [PATCH v3 26/27] attr: push the bare repo check into read_attr() Brandon Williams
2017-01-28  2:02     ` [PATCH v3 27/27] attr: reformat git_attr_set_direction() function Brandon Williams
2017-02-02 19:14     ` [PATCH v3 00/27] Revamp the attribute system; another round Junio C Hamano
2017-02-09 17:18       ` Brandon Williams
2017-02-09 19:31         ` Junio C Hamano

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