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[PATCH 5/6] setup: save prefix (original cwd relative to toplevel) in startup_info

From
Jonathan Nieder <jrnieder@gmail.com>
Date
Nov 30, 2010, 03:10 UTC
Message-ID
<20101130031048.GF5326@burratino>
In-Reply-To
<20101130025223.GA5326@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>
---
Typo in v1 log message fixed (s/wiould/would/).
 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 32 of 45 in “setup_git_env: print the true $GIT_DIR for debugging”
  1. 1/4 setup_git_env: print the true $GIT_DIR for debuggingNguyễn Thái Ngọc Duy, Oct 20, 2010
  2. 2/4 run_builtin(): save "-h" detection result for later useNguyễn Thái Ngọc Duy, Oct 20, 2010
  3. Junio C HamanoOct 21, 2010
  4. Nguyen Thai Ngoc DuyOct 22, 2010
  5. 3/4 builtins: utilize startup_info->help where possibleNguyễn Thái Ngọc Duy, Oct 20, 2010
  6. 4/4 builtins: check for startup_info->help, print and exit earlyNguyễn Thái Ngọc Duy, Oct 20, 2010
  7. 0/7 Jonathan Nieder, Oct 22, 2010
  8. 1/7 branch -h: show usage even in an invalid repositoryJonathan Nieder, Oct 22, 2010
  9. Junio C HamanoOct 22, 2010
  10. Jonathan NiederOct 24, 2010
  11. 0/4 update-index: migrate to parse-options APIJonathan Nieder, Oct 24, 2010
  12. 1/4 parse-options: allow git commands to invent new option typesJonathan Nieder, Oct 24, 2010
  13. Stephen BoydOct 25, 2010
  14. Jonathan NiederNov 29, 2010
  15. 2/4 parse-options: make resuming easier after PARSE_OPT_STOP_AT_NON_OPTIONJonathan Nieder, Oct 24, 2010
  16. 3/4 setup: save prefix (original cwd relative to toplevel) in startup_infoJonathan Nieder, Oct 24, 2010
  17. 4/4 update-index: migrate to parse-options APIJonathan Nieder, Oct 24, 2010
  18. Stephen BoydOct 25, 2010
  19. Jonathan NiederNov 30, 2010
  20. Nguyen Thai Ngoc DuyOct 24, 2010
  21. Junio C HamanoOct 27, 2010
  22. 0/6 update-index: migrate to parse-options APIJonathan Nieder, Nov 30, 2010
  23. 1/6 parse-options: sanity check PARSE_OPT_NOARG flagJonathan Nieder, Nov 30, 2010
  24. Stephen BoydNov 30, 2010
  25. Junio C HamanoDec 1, 2010
  26. Stephen BoydDec 3, 2010
  27. Junio C HamanoDec 1, 2010
  28. 2/6 parse-options: do not infer PARSE_OPT_NOARG from option typeJonathan Nieder, Nov 30, 2010
  29. Stephen BoydNov 30, 2010
  30. 3/6 parse-options: allow git commands to invent new option typesJonathan Nieder, Nov 30, 2010
  31. 4/6 parse-options: make resuming easier after PARSE_OPT_STOP_AT_NON_OPTIONJonathan Nieder, Nov 30, 2010
  32. 5/6 setup: save prefix (original cwd relative to toplevel) in startup_infoJonathan Nieder, Nov 30, 2010
  33. 6/6 update-index: migrate to parse-options APIJonathan Nieder, Nov 30, 2010
  34. Stephen BoydNov 30, 2010
  35. parse-options: always show arghelp when LITERAL_ARGHELP is setJonathan Nieder, Nov 30, 2010
  36. 2/7 checkout-index -h: show usage even in an invalid repositoryJonathan Nieder, Oct 22, 2010
  37. 3/7 commit/status -h: show usage even with broken configurationJonathan Nieder, Oct 22, 2010
  38. 4/7 gc -h: show usage even with broken configurationJonathan Nieder, Oct 22, 2010
  39. 5/7 ls-files -h: show usage even with corrupt indexJonathan Nieder, Oct 22, 2010
  40. Junio C HamanoOct 22, 2010
  41. 6/7 merge -h: show usage even with corrupt indexJonathan Nieder, Oct 22, 2010
  42. Junio C HamanoOct 22, 2010
  43. 7/7 update-index -h: show usage even with corrupt indexJonathan Nieder, Oct 22, 2010
  44. 0/7 avoid repository access during "git <foo> -h"Jonathan Nieder, Oct 22, 2010
  45. Nguyen Thai Ngoc DuyOct 22, 2010

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