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[PATCH v3 1/6] config.c: fix accuracy of line number in errors

From
Tanay Abhra <tanayabh@gmail.com>
Date
Jul 28, 2014, 10:33 UTC
Message-ID
<1406543635-19281-2-git-send-email-tanayabh@gmail.com>
In-Reply-To
<1406543635-19281-1-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 d3ad661..e5b7f10 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 15 in “Rewrite `git_config()` using config-set API”
  1. 0/6 Rewrite `git_config()` using config-set APITanay Abhra, Jul 28, 2014
  2. 1/6 config.c: fix accuracy of line number in errorsTanay Abhra, Jul 28, 2014
  3. 2/6 add line number and file name info to `config_set`Tanay Abhra, Jul 28, 2014
  4. 3/6 rewrite git_config() to use the config-set APITanay Abhra, Jul 28, 2014
  5. 4/6 add a test for semantic errors in config filesTanay Abhra, Jul 28, 2014
  6. Matthieu MoyJul 28, 2014
  7. Tanay AbhraJul 28, 2014
  8. Matthieu MoyJul 28, 2014
  9. 5/6 config: add `git_die_config()` to the config-set APITanay Abhra, Jul 28, 2014
  10. Ramsay JonesJul 28, 2014
  11. Tanay AbhraJul 28, 2014
  12. Matthieu MoyJul 28, 2014
  13. Matthieu MoyJul 28, 2014
  14. 6/6 add tests for `git_config_get_string_const()`Tanay Abhra, Jul 28, 2014
  15. Matthieu MoyJul 28, 2014

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