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[PATCH v6 1/7] config.c: fix accuracy of line number in errors

From
Tanay Abhra <tanayabh@gmail.com>
Date
Jul 31, 2014, 15:47 UTC
Message-ID
<1406821662-1570-2-git-send-email-tanayabh@gmail.com>
In-Reply-To
<1406821662-1570-1-git-send-email-tanayabh@gmail.com>
From: Matthieu Moy <Matthieu.Moy@grenoble-inp.fr>

If a callback returns a negative value to `git_config*()` family, they call `die()` while printing the line number and the file name. Currently the printed line number is off by one, thus printing the wrong line number.

Make `linenr` point to the line we just parsed during the call to callback to get accurate line number in error messages.

Commit-message-by: Tanay Abhra <tanayabh@gmail.com>
Signed-off-by: Tanay Abhra <tanayabh@gmail.com>
---
 config.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/config.c b/config.c
index a191328..ed5fc8e 100644
--- a/config.c
+++ b/config.c
@@ -244,6 +244,7 @@ static int get_next_char(void)
 		cf->linenr++;
 	if (c == EOF) {
 		cf->eof = 1;
+		cf->linenr++;
 		c = '\n';
 	}
 	return c;
@@ -319,6 +320,7 @@ static int get_value(config_fn_t fn, void *data, struct strbuf *name)
 {
 	int c;
 	char *value;
+	int ret;
 
 	/* Get the full name */
 	for (;;) {
@@ -341,7 +343,15 @@ static int get_value(config_fn_t fn, void *data, struct strbuf *name)
 		if (!value)
 			return -1;
 	}
-	return fn(name->buf, value, data);
+	/*
+	 * We already consumed the \n, but we need linenr to point to
+	 * the line we just parsed during the call to fn to get
+	 * accurate line number in error messages.
+	 */
+	cf->linenr--;
+	ret = fn(name->buf, value, data);
+	cf->linenr++;
+	return ret;
 }
 
 static int get_extended_base_var(struct strbuf *name, int c)
-- 
1.9.0.GIT
Previous: Tanay AbhraNext: Tanay Abhra
Message 2 of 20 in “Rewrite `git_config()` using config-set API”
  1. 0/7 Rewrite `git_config()` using config-set APITanay Abhra, Jul 31, 2014
  2. 1/7 config.c: fix accuracy of line number in errorsTanay Abhra, Jul 31, 2014
  3. 2/7 add line number and file name info to `config_set`Tanay Abhra, Jul 31, 2014
  4. 3/7 change `git_config()` return value to voidTanay Abhra, Jul 31, 2014
  5. 4/7 rewrite git_config() to use the config-set APITanay Abhra, Jul 31, 2014
  6. 5/7 add a test for semantic errors in config filesTanay Abhra, Jul 31, 2014
  7. 6/7 config: add `git_die_config()` to the config-set APITanay Abhra, Jul 31, 2014
  8. Matthieu MoyJul 31, 2014
  9. Tanay AbhraJul 31, 2014
  10. Matthieu MoyJul 31, 2014
  11. Tanay AbhraJul 31, 2014
  12. Matthieu MoyJul 31, 2014
  13. Tanay AbhraJul 31, 2014
  14. Matthieu MoyJul 31, 2014
  15. Junio C HamanoJul 31, 2014
  16. Matthieu MoyAug 1, 2014
  17. Tanay AbhraAug 1, 2014
  18. Matthieu MoyAug 1, 2014
  19. 7/7 add tests for `git_config_get_string_const()`Tanay Abhra, Jul 31, 2014
  20. Matthieu MoyJul 31, 2014

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