OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

Allow strings to grow in size

Browse Source 
This lets us use QString for building larger strings

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Anthony Liguori 2009-11-11 10:49:51 -06:00
parent 033815fe14
commit d30ec846ed
2 changed files with 40 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
qstring.c
View File

@ -20,6 +20,16 @@ static const QType qstring_type = {
.destroy = qstring_destroy_obj,
};
/**
* qstring_new(): Create a new empty QString
*
* Return strong reference.
*/
QString *qstring_new(void)
{
return qstring_from_str("");
}
/**
* qstring_from_str(): Create a new QString from a regular C string
*
@ -30,12 +40,37 @@ QString *qstring_from_str(const char *str)
QString *qstring;
qstring = qemu_malloc(sizeof(*qstring));
qstring->string = qemu_strdup(str);
qstring->length = strlen(str);
qstring->capacity = qstring->length;
qstring->string = qemu_malloc(qstring->capacity + 1);
memcpy(qstring->string, str, qstring->length);
qstring->string[qstring->length] = 0;
QOBJECT_INIT(qstring, &qstring_type);
return qstring;
}
/* qstring_append(): Append a C string to a QString
*/
void qstring_append(QString *qstring, const char *str)
{
size_t len = strlen(str);
if (qstring->capacity < (qstring->length + len)) {
qstring->capacity += len;
qstring->capacity *= 2; /* use exponential growth */
qstring->string = qemu_realloc(qstring->string, qstring->capacity + 1);
}
memcpy(qstring->string + qstring->length, str, len);
qstring->length += len;
qstring->string[qstring->length] = 0;
}
/**
* qobject_to_qstring(): Convert a QObject to a QString
*/

4
qstring.h
View File

@ -6,10 +6,14 @@
typedef struct QString {
QObject_HEAD;
char *string;
size_t length;
size_t capacity;
} QString;
QString *qstring_new(void);
QString *qstring_from_str(const char *str);
const char *qstring_get_str(const QString *qstring);
void qstring_append(QString *qstring, const char *str);
QString *qobject_to_qstring(const QObject *obj);
#endif /* QSTRING_H */