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[PATCH v4 1/6] config.c: fix accuracy of line number in errors

From
Tanay Abhra <tanayabh@gmail.com>
Date
Jul 29, 2014, 11:28 UTC
Message-ID
<1406633302-23144-2-git-send-email-tanayabh@gmail.com>
In-Reply-To
<1406633302-23144-1-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 13 in “Rewrite `git_config()` using config-set API”
  1. 0/6 Rewrite `git_config()` using config-set APITanay Abhra, Jul 29, 2014
  2. 1/6 config.c: fix accuracy of line number in errorsTanay Abhra, Jul 29, 2014
  3. 2/6 add line number and file name info to `config_set`Tanay Abhra, Jul 29, 2014
  4. 3/6 rewrite git_config() to use the config-set APITanay Abhra, Jul 29, 2014
  5. Tanay AbhraJul 29, 2014
  6. Matthieu MoyJul 29, 2014
  7. Matthieu MoyJul 29, 2014
  8. Tanay AbhraJul 29, 2014
  9. Matthieu MoyJul 29, 2014
  10. Tanay AbhraJul 29, 2014
  11. 4/6 add a test for semantic errors in config filesTanay Abhra, Jul 29, 2014
  12. 5/6 config: add `git_die_config()` to the config-set APITanay Abhra, Jul 29, 2014
  13. 6/6 add tests for `git_config_get_string_const()`Tanay Abhra, Jul 29, 2014

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