From 4b5c5766d0ee4cbe70642977530f753678ebcfce Mon Sep 17 00:00:00 2001 From: Luiz Capitulino Date: Wed, 18 Nov 2009 23:05:27 -0200 Subject: [PATCH] QString: Introduce qstring_from_substr() Note that we can now write qstring_from_str() as a wrapper. Signed-off-by: Luiz Capitulino Signed-off-by: Anthony Liguori --- qstring.c | 20 +++++++++++++++----- qstring.h | 1 + 2 files changed, 16 insertions(+), 5 deletions(-) diff --git a/qstring.c b/qstring.c index ad17769..740a106 100644 --- a/qstring.c +++ b/qstring.c @@ -31,21 +31,21 @@ QString *qstring_new(void) } /** - * qstring_from_str(): Create a new QString from a regular C string + * qstring_from_substr(): Create a new QString from a C string substring * - * Return strong reference. + * Return string reference */ -QString *qstring_from_str(const char *str) +QString *qstring_from_substr(const char *str, int start, int end) { QString *qstring; qstring = qemu_malloc(sizeof(*qstring)); - qstring->length = strlen(str); + qstring->length = end - start + 1; qstring->capacity = qstring->length; qstring->string = qemu_malloc(qstring->capacity + 1); - memcpy(qstring->string, str, qstring->length); + memcpy(qstring->string, str + start, qstring->length); qstring->string[qstring->length] = 0; QOBJECT_INIT(qstring, &qstring_type); @@ -53,6 +53,16 @@ QString *qstring_from_str(const char *str) return qstring; } +/** + * qstring_from_str(): Create a new QString from a regular C string + * + * Return strong reference. + */ +QString *qstring_from_str(const char *str) +{ + return qstring_from_substr(str, 0, strlen(str) - 1); +} + static void capacity_increase(QString *qstring, size_t len) { if (qstring->capacity < (qstring->length + len)) { diff --git a/qstring.h b/qstring.h index c065331..6aaa7d5 100644 --- a/qstring.h +++ b/qstring.h @@ -13,6 +13,7 @@ typedef struct QString { QString *qstring_new(void); QString *qstring_from_str(const char *str); +QString *qstring_from_substr(const char *str, int start, int end); const char *qstring_get_str(const QString *qstring); void qstring_append_int(QString *qstring, int64_t value); void qstring_append(QString *qstring, const char *str); -- 2.7.4