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[PATCH 18/21] builtin/config: convert `key` to a local variable

From
Patrick Steinhardt <ps@pks.im>
Date
May 10, 2024, 11:25 UTC
Message-ID
<2aee7ec5d8dcd301decec75c6d0fd49da700ac3a.1715339393.git.ps@pks.im>
In-Reply-To
<cover.1715339393.git.ps@pks.im>

The `key` variable is used by the `get_value()` function for two purposes:

  - It is used to store the result of `git_config_parse_key()`, which si
    then passed on to `collect_config()`.
  - It is used as a store to convert the provided key to an
    all-lowercase key when `use_key_regexp` is set.

Both of these cases don't warrant a global variable at all. In the former case we can pass the key via `struct collect_config_data`. And in the latter case we really only want to have it as a temporary local variable such that we can free associated memory.

Refactor the code accordingly to reduce our reliance on global state.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 builtin/config.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/builtin/config.c b/builtin/config.c
index 1c6d9c734c..8cedf67a4f 100644
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -122,7 +122,6 @@ struct config_display_options {
 	.key_delim = ' ', \
 }
 
-static char *key;
 static int use_key_regexp;
 static int do_all;
 static int fixed_value;
@@ -324,6 +323,7 @@ struct collect_config_data {
 	const struct config_display_options *display_opts;
 	struct strbuf_list *values;
 	const char *value_pattern;
+	const char *key;
 	regex_t *regexp;
 	regex_t *key_regexp;
 	int do_not_match;
@@ -336,7 +336,7 @@ static int collect_config(const char *key_, const char *value_,
 	struct strbuf_list *values = data->values;
 	const struct key_value_info *kvi = ctx->kvi;
 
-	if (!use_key_regexp && strcmp(key_, key))
+	if (!use_key_regexp && strcmp(key_, data->key))
 		return 0;
 	if (use_key_regexp && regexec(data->key_regexp, key_, 0, NULL, 0))
 		return 0;
@@ -363,6 +363,7 @@ static int get_value(const struct config_location_options *opts,
 		.display_opts = display_opts,
 		.values = &values,
 	};
+	char *key = NULL;
 	int i;
 
 	if (use_key_regexp) {
@@ -394,6 +395,8 @@ static int get_value(const struct config_location_options *opts,
 			ret = CONFIG_INVALID_KEY;
 			goto free_strings;
 		}
+
+		data.key = key;
 	}
 
 	if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
-- 
2.45.GIT
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 25 of 81 in “builtin/config: remove global state”
  1. 00/21 builtin/config: remove global statePatrick Steinhardt, May 10, 2024
  2. 01/21 builtin/config: stop printing full usage on misusePatrick Steinhardt, May 10, 2024
  3. 02/21 builtin/config: move legacy mode into its own functionPatrick Steinhardt, May 10, 2024
  4. 03/21 builtin/config: move subcommand options into `cmd_config()`Patrick Steinhardt, May 10, 2024
  5. 04/21 builtin/config: move legacy options into `cmd_config()`Patrick Steinhardt, May 10, 2024
  6. 05/21 builtin/config: move actions into `cmd_config_actions()`Patrick Steinhardt, May 10, 2024
  7. Kyle LippincottMay 10, 2024
  8. Patrick SteinhardtMay 13, 2024
  9. 06/21 builtin/config: check for writeability after source is set upPatrick Steinhardt, May 10, 2024
  10. Kyle LippincottMay 10, 2024
  11. Patrick SteinhardtMay 13, 2024
  12. 07/21 config: make the config source constPatrick Steinhardt, May 10, 2024
  13. 08/21 builtin/config: refactor functions to have common exit pathsPatrick Steinhardt, May 10, 2024
  14. 09/21 builtin/config: move location options into local variablesPatrick Steinhardt, May 10, 2024
  15. Patrick SteinhardtMay 10, 2024
  16. 10/21 builtin/config: move display options into local variablesPatrick Steinhardt, May 10, 2024
  17. 11/21 builtin/config: move type options into display optionsPatrick Steinhardt, May 10, 2024
  18. 12/21 builtin/config: move default value into display optionsPatrick Steinhardt, May 10, 2024
  19. 13/21 builtin/config: move `respect_includes_opt` into location optionsPatrick Steinhardt, May 10, 2024
  20. 14/21 builtin/config: convert `do_not_match` to a local variablePatrick Steinhardt, May 10, 2024
  21. Eric SunshineMay 11, 2024
  22. 15/21 builtin/config: convert `value_pattern` to a local variablePatrick Steinhardt, May 10, 2024
  23. 16/21 builtin/config: convert `regexp` to a local variablePatrick Steinhardt, May 10, 2024
  24. 17/21 builtin/config: convert `key_regexp` to a local variablePatrick Steinhardt, May 10, 2024
  25. 18/21 builtin/config: convert `key` to a local variablePatrick Steinhardt, May 10, 2024
  26. 19/21 builtin/config: track "fixed value" option via flags onlyPatrick Steinhardt, May 10, 2024
  27. Eric SunshineMay 11, 2024
  28. 20/21 builtin/config: convert flags to a local variablePatrick Steinhardt, May 10, 2024
  29. 21/21 builtin/config: pass data between callbacks via local variablesPatrick Steinhardt, May 10, 2024
  30. Junio C HamanoMay 10, 2024
  31. Kyle LippincottMay 10, 2024
  32. 00/21 builtin/config: remove global statePatrick Steinhardt, May 13, 2024
  33. 01/21 builtin/config: stop printing full usage on misusePatrick Steinhardt, May 13, 2024
  34. 02/21 builtin/config: move legacy mode into its own functionPatrick Steinhardt, May 13, 2024
  35. 03/21 builtin/config: move subcommand options into `cmd_config()`Patrick Steinhardt, May 13, 2024
  36. 04/21 builtin/config: move legacy options into `cmd_config()`Patrick Steinhardt, May 13, 2024
  37. 05/21 builtin/config: move actions into `cmd_config_actions()`Patrick Steinhardt, May 13, 2024
  38. 06/21 builtin/config: check for writeability after source is set upPatrick Steinhardt, May 13, 2024
  39. Taylor BlauMay 14, 2024
  40. Patrick SteinhardtMay 15, 2024
  41. 07/21 config: make the config source constPatrick Steinhardt, May 13, 2024
  42. 08/21 builtin/config: refactor functions to have common exit pathsPatrick Steinhardt, May 13, 2024
  43. 09/21 builtin/config: move location options into local variablesPatrick Steinhardt, May 13, 2024
  44. 10/21 builtin/config: move display options into local variablesPatrick Steinhardt, May 13, 2024
  45. 11/21 builtin/config: move type options into display optionsPatrick Steinhardt, May 13, 2024
  46. 12/21 builtin/config: move default value into display optionsPatrick Steinhardt, May 13, 2024
  47. 13/21 builtin/config: move `respect_includes_opt` into location optionsPatrick Steinhardt, May 13, 2024
  48. 14/21 builtin/config: convert `do_not_match` to a local variablePatrick Steinhardt, May 13, 2024
  49. 15/21 builtin/config: convert `value_pattern` to a local variablePatrick Steinhardt, May 13, 2024
  50. 16/21 builtin/config: convert `regexp` to a local variablePatrick Steinhardt, May 13, 2024
  51. 17/21 builtin/config: convert `key_regexp` to a local variablePatrick Steinhardt, May 13, 2024
  52. 18/21 builtin/config: convert `key` to a local variablePatrick Steinhardt, May 13, 2024
  53. 19/21 builtin/config: track "fixed value" option via flags onlyPatrick Steinhardt, May 13, 2024
  54. 20/21 builtin/config: convert flags to a local variablePatrick Steinhardt, May 13, 2024
  55. 21/21 builtin/config: pass data between callbacks via local variablesPatrick Steinhardt, May 13, 2024
  56. Kyle LippincottMay 13, 2024
  57. Junio C HamanoMay 14, 2024
  58. Patrick SteinhardtMay 14, 2024
  59. Patrick SteinhardtMay 15, 2024
  60. 00/21 builtin/config: remove global statePatrick Steinhardt, May 15, 2024
  61. 01/21 builtin/config: stop printing full usage on misusePatrick Steinhardt, May 15, 2024
  62. 02/21 builtin/config: move legacy mode into its own functionPatrick Steinhardt, May 15, 2024
  63. 03/21 builtin/config: move subcommand options into `cmd_config()`Patrick Steinhardt, May 15, 2024
  64. 04/21 builtin/config: move legacy options into `cmd_config()`Patrick Steinhardt, May 15, 2024
  65. 05/21 builtin/config: move actions into `cmd_config_actions()`Patrick Steinhardt, May 15, 2024
  66. 06/21 builtin/config: check for writeability after source is set upPatrick Steinhardt, May 15, 2024
  67. 07/21 config: make the config source constPatrick Steinhardt, May 15, 2024
  68. 08/21 builtin/config: refactor functions to have common exit pathsPatrick Steinhardt, May 15, 2024
  69. 09/21 builtin/config: move location options into local variablesPatrick Steinhardt, May 15, 2024
  70. 10/21 builtin/config: move display options into local variablesPatrick Steinhardt, May 15, 2024
  71. 11/21 builtin/config: move type options into display optionsPatrick Steinhardt, May 15, 2024
  72. 12/21 builtin/config: move default value into display optionsPatrick Steinhardt, May 15, 2024
  73. 13/21 builtin/config: move `respect_includes_opt` into location optionsPatrick Steinhardt, May 15, 2024
  74. 14/21 builtin/config: convert `do_not_match` to a local variablePatrick Steinhardt, May 15, 2024
  75. 15/21 builtin/config: convert `value_pattern` to a local variablePatrick Steinhardt, May 15, 2024
  76. 16/21 builtin/config: convert `regexp` to a local variablePatrick Steinhardt, May 15, 2024
  77. 17/21 builtin/config: convert `key_regexp` to a local variablePatrick Steinhardt, May 15, 2024
  78. 18/21 builtin/config: convert `key` to a local variablePatrick Steinhardt, May 15, 2024
  79. 19/21 builtin/config: track "fixed value" option via flags onlyPatrick Steinhardt, May 15, 2024
  80. 20/21 builtin/config: convert flags to a local variablePatrick Steinhardt, May 15, 2024
  81. 21/21 builtin/config: pass data between callbacks via local variablesPatrick Steinhardt, May 15, 2024

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