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authorMarkus Armbruster <armbru@redhat.com>2018-07-27 08:22:04 +0200
committerMarkus Armbruster <armbru@redhat.com>2018-07-28 09:09:58 +0200
commitba891d68b4ff17faaea3d3a8bfd82af3eed0a134 (patch)
treea60591188270f2ec5ade8eef780b26da5ddf0efd
parentb65ab77b3afadd7bb3051b341a5258ff7fb9d246 (diff)
downloadqemu-arm-ba891d68b4ff17faaea3d3a8bfd82af3eed0a134.tar.gz
qstring: Move qstring_from_substr()'s @end one to the right
qstring_from_substr() takes the index of the substring's first and last character. qstring_from_substr(s, 0, SIZE_MAX) denotes an empty substring. Awkward. Shift the end index one to the right. This simplifies both qstring_from_substr() and its callers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180727062204.10401-3-armbru@redhat.com>
-rw-r--r--block/blkdebug.c2
-rw-r--r--block/blkverify.c2
-rw-r--r--block/nbd.c2
-rw-r--r--qobject/qstring.c6
-rw-r--r--tests/check-qobject.c2
-rw-r--r--tests/check-qstring.c2
6 files changed, 8 insertions, 8 deletions
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 0457bf5b66..0759452925 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -305,7 +305,7 @@ static void blkdebug_parse_filename(const char *filename, QDict *options,
if (c != filename) {
QString *config_path;
- config_path = qstring_from_substr(filename, 0, c - filename - 1);
+ config_path = qstring_from_substr(filename, 0, c - filename);
qdict_put(options, "config", config_path);
}
diff --git a/block/blkverify.c b/block/blkverify.c
index da97ee5927..89bf4386e3 100644
--- a/block/blkverify.c
+++ b/block/blkverify.c
@@ -80,7 +80,7 @@ static void blkverify_parse_filename(const char *filename, QDict *options,
}
/* TODO Implement option pass-through and set raw.filename here */
- raw_path = qstring_from_substr(filename, 0, c - filename - 1);
+ raw_path = qstring_from_substr(filename, 0, c - filename);
qdict_put(options, "x-raw", raw_path);
/* TODO Allow multi-level nesting and set file.filename here */
diff --git a/block/nbd.c b/block/nbd.c
index b198ad775f..e87699fb73 100644
--- a/block/nbd.c
+++ b/block/nbd.c
@@ -109,7 +109,7 @@ static int nbd_parse_uri(const char *filename, QDict *options)
/* strip braces from literal IPv6 address */
if (uri->server[0] == '[') {
host = qstring_from_substr(uri->server, 1,
- strlen(uri->server) - 2);
+ strlen(uri->server) - 1);
} else {
host = qstring_from_str(uri->server);
}
diff --git a/qobject/qstring.c b/qobject/qstring.c
index 1bb7784a88..0f1510e792 100644
--- a/qobject/qstring.c
+++ b/qobject/qstring.c
@@ -41,12 +41,12 @@ QString *qstring_from_substr(const char *str, size_t start, size_t end)
{
QString *qstring;
- assert(start <= end + 1);
+ assert(start <= end);
qstring = g_malloc(sizeof(*qstring));
qobject_init(QOBJECT(qstring), QTYPE_QSTRING);
- qstring->length = end - start + 1;
+ qstring->length = end - start;
qstring->capacity = qstring->length;
assert(qstring->capacity < SIZE_MAX);
@@ -64,7 +64,7 @@ QString *qstring_from_substr(const char *str, size_t start, size_t end)
*/
QString *qstring_from_str(const char *str)
{
- return qstring_from_substr(str, 0, strlen(str) - 1);
+ return qstring_from_substr(str, 0, strlen(str));
}
static void capacity_increase(QString *qstring, size_t len)
diff --git a/tests/check-qobject.c b/tests/check-qobject.c
index 16ccbde82c..593c3a0618 100644
--- a/tests/check-qobject.c
+++ b/tests/check-qobject.c
@@ -154,7 +154,7 @@ static void qobject_is_equal_string_test(void)
str_case = qstring_from_str("Foo");
/* Should yield "foo" */
- str_built = qstring_from_substr("form", 0, 1);
+ str_built = qstring_from_substr("form", 0, 2);
qstring_append_chr(str_built, 'o');
check_unequal(str_base, str_whitespace_0, str_whitespace_1,
diff --git a/tests/check-qstring.c b/tests/check-qstring.c
index f11a7a8605..2d079921e3 100644
--- a/tests/check-qstring.c
+++ b/tests/check-qstring.c
@@ -66,7 +66,7 @@ static void qstring_from_substr_test(void)
{
QString *qs;
- qs = qstring_from_substr("virtualization", 3, 9);
+ qs = qstring_from_substr("virtualization", 3, 10);
g_assert(qs != NULL);
g_assert(strcmp(qstring_get_str(qs), "tualiza") == 0);