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[PATCH 09/10] setup: save prefix (original cwd relative to toplevel) in startup_info

From
Jonathan Nieder <jrnieder@gmail.com>
Date
Dec 1, 2010, 23:33 UTC
Message-ID
<20101201233322.GJ31815@burratino>
In-Reply-To
<20101201232728.GA31815@burratino>
From: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>

Save the path from the original cwd to the cwd at the end of the setup procedure in the startup_info struct introduced in e37c1329 (2010-08-05). The value cannot vary from thread to thread anyway, since the cwd is global.

So now in your builtin command, instead of passing prefix around, when you want to convert a user-supplied path to a cwd-relative path, you can use startup_info->prefix directly.

Caveat: As with the return value from setup_git_directory_gently(),
startup_info->prefix would be NULL when the original cwd is not a
subdir of the toplevel.

Longer term, this would allow the prefix to be reused when several noncooperating functions require access to the same repository (for example, when accessing configuration before running a builtin).

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 cache.h |    1 +
 setup.c |    4 +++-
 2 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/cache.h b/cache.h
index 33decd9..222d9cf 100644
--- a/cache.h
+++ b/cache.h
@@ -1117,6 +1117,7 @@ const char *split_cmdline_strerror(int cmdline_errno);
 /* git.c */
 struct startup_info {
 	int have_repository;
+	const char *prefix;
 };
 extern struct startup_info *startup_info;
 
diff --git a/setup.c b/setup.c
index a3b76de..833db12 100644
--- a/setup.c
+++ b/setup.c
@@ -512,8 +512,10 @@ const char *setup_git_directory_gently(int *nongit_ok)
 	const char *prefix;
 
 	prefix = setup_git_directory_gently_1(nongit_ok);
-	if (startup_info)
+	if (startup_info) {
 		startup_info->have_repository = !nongit_ok || !*nongit_ok;
+		startup_info->prefix = prefix;
+	}
 	return prefix;
 }
 
-- 
1.7.2.3
Previous: Jonathan NiederNext: Jonathan Nieder
Message 20 of 21 in “update-index: migrate to parse-options API”
  1. 00/10 update-index: migrate to parse-options APIJonathan Nieder, Dec 1, 2010
  2. 01/10 parse-options: Don't call parse_options_check() so muchJonathan Nieder, Dec 1, 2010
  3. René ScharfeDec 5, 2010
  4. Stephen BoydDec 6, 2010
  5. 02/10 parse-options: clearer reporting of API misuseJonathan Nieder, Dec 1, 2010
  6. Jonathan NiederDec 2, 2010
  7. 02/10 parse-options: clearer reporting of API misuseJonathan Nieder, Dec 2, 2010
  8. 02/10 parse-options: clearer reporting of API misuseJonathan Nieder, Dec 2, 2010
  9. 03/10 parse-options: move NODASH sanity checks to parse_options_checkJonathan Nieder, Dec 1, 2010
  10. 03/10 parse-options: move NODASH sanity checks to parse_options_checkJonathan Nieder, Dec 2, 2010
  11. 04/10 parse-options: sanity check PARSE_OPT_NOARG flagJonathan Nieder, Dec 1, 2010
  12. 04/10 parse-options: sanity check PARSE_OPT_NOARG flagJonathan Nieder, Dec 2, 2010
  13. 05/10 parse-options: do not infer PARSE_OPT_NOARG from option typeJonathan Nieder, Dec 1, 2010
  14. 06/10 parse-options: never suppress arghelp if LITERAL_ARGHELP is setJonathan Nieder, Dec 1, 2010
  15. Stephen BoydDec 3, 2010
  16. Jonathan NiederDec 3, 2010
  17. Stephen BoydDec 3, 2010
  18. 07/10 parse-options: allow git commands to invent new option typesJonathan Nieder, Dec 1, 2010
  19. 08/10 parse-options: make resuming easier after PARSE_OPT_STOP_AT_NON_OPTIONJonathan Nieder, Dec 1, 2010
  20. 09/10 setup: save prefix (original cwd relative to toplevel) in startup_infoJonathan Nieder, Dec 1, 2010
  21. 10/10 update-index: migrate to parse-options APIJonathan Nieder, Dec 1, 2010

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