2009-08-28 20:27:06 +02:00
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/*
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2010-05-12 21:34:42 +02:00
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* QString Module
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2009-08-28 20:27:06 +02:00
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*
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* Copyright (C) 2009 Red Hat Inc.
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*
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* Authors:
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* Luiz Capitulino <lcapitulino@redhat.com>
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*
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2010-05-12 21:34:42 +02:00
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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2009-08-28 20:27:06 +02:00
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*/
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2010-05-12 21:34:42 +02:00
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2016-01-29 18:50:01 +01:00
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#include "qemu/osdep.h"
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2012-12-17 18:19:43 +01:00
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#include "qapi/qmp/qstring.h"
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2009-08-28 20:27:06 +02:00
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#include "qemu-common.h"
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2009-11-11 17:49:51 +01:00
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/**
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* qstring_new(): Create a new empty QString
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*
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* Return strong reference.
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*/
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QString *qstring_new(void)
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{
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return qstring_from_str("");
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}
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2013-03-25 18:46:37 +01:00
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/**
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* qstring_get_length(): Get the length of a QString
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*/
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size_t qstring_get_length(const QString *qstring)
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{
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return qstring->length;
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}
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2009-08-28 20:27:06 +02:00
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/**
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2009-11-19 02:05:27 +01:00
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* qstring_from_substr(): Create a new QString from a C string substring
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2009-08-28 20:27:06 +02:00
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*
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2009-11-19 02:05:27 +01:00
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* Return string reference
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2009-08-28 20:27:06 +02:00
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*/
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2009-11-19 02:05:27 +01:00
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QString *qstring_from_substr(const char *str, int start, int end)
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2009-08-28 20:27:06 +02:00
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{
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QString *qstring;
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2011-08-21 05:09:37 +02:00
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qstring = g_malloc(sizeof(*qstring));
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2015-12-02 06:20:45 +01:00
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qobject_init(QOBJECT(qstring), QTYPE_QSTRING);
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2009-11-11 17:49:51 +01:00
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2009-11-19 02:05:27 +01:00
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qstring->length = end - start + 1;
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2009-11-11 17:49:51 +01:00
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qstring->capacity = qstring->length;
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2011-08-21 05:09:37 +02:00
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qstring->string = g_malloc(qstring->capacity + 1);
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2009-11-19 02:05:27 +01:00
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memcpy(qstring->string, str + start, qstring->length);
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2009-11-11 17:49:51 +01:00
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qstring->string[qstring->length] = 0;
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2009-08-28 20:27:06 +02:00
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return qstring;
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}
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2009-11-19 02:05:27 +01:00
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/**
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* qstring_from_str(): Create a new QString from a regular C string
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*
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* Return strong reference.
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*/
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QString *qstring_from_str(const char *str)
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{
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return qstring_from_substr(str, 0, strlen(str) - 1);
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}
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2009-11-19 02:05:25 +01:00
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static void capacity_increase(QString *qstring, size_t len)
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2009-11-11 17:49:51 +01:00
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{
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if (qstring->capacity < (qstring->length + len)) {
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qstring->capacity += len;
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qstring->capacity *= 2; /* use exponential growth */
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2011-08-21 05:09:37 +02:00
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qstring->string = g_realloc(qstring->string, qstring->capacity + 1);
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2009-11-11 17:49:51 +01:00
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}
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2009-11-19 02:05:25 +01:00
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}
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/* qstring_append(): Append a C string to a QString
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*/
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void qstring_append(QString *qstring, const char *str)
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{
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size_t len = strlen(str);
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2009-11-11 17:49:51 +01:00
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2009-11-19 02:05:25 +01:00
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capacity_increase(qstring, len);
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2009-11-11 17:49:51 +01:00
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memcpy(qstring->string + qstring->length, str, len);
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qstring->length += len;
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qstring->string[qstring->length] = 0;
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}
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2009-11-19 02:05:26 +01:00
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void qstring_append_int(QString *qstring, int64_t value)
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{
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char num[32];
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snprintf(num, sizeof(num), "%" PRId64, value);
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qstring_append(qstring, num);
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}
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2009-11-19 02:05:25 +01:00
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/**
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* qstring_append_chr(): Append a C char to a QString
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*/
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void qstring_append_chr(QString *qstring, int c)
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{
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capacity_increase(qstring, 1);
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qstring->string[qstring->length++] = c;
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qstring->string[qstring->length] = 0;
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}
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2009-08-28 20:27:06 +02:00
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/**
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* qstring_get_str(): Return a pointer to the stored string
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*
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* NOTE: Should be used with caution, if the object is deallocated
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* this pointer becomes invalid.
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*/
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const char *qstring_get_str(const QString *qstring)
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{
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return qstring->string;
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}
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2017-11-14 19:01:25 +01:00
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/**
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* qstring_is_equal(): Test whether the two QStrings are equal
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*/
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bool qstring_is_equal(const QObject *x, const QObject *y)
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{
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2018-02-24 16:40:29 +01:00
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return !strcmp(qobject_to(QString, x)->string,
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qobject_to(QString, y)->string);
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2017-11-14 19:01:25 +01:00
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}
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2009-08-28 20:27:06 +02:00
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/**
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* qstring_destroy_obj(): Free all memory allocated by a QString
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* object
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*/
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2015-12-02 06:20:45 +01:00
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void qstring_destroy_obj(QObject *obj)
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2009-08-28 20:27:06 +02:00
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{
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QString *qs;
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assert(obj != NULL);
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2018-02-24 16:40:29 +01:00
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qs = qobject_to(QString, obj);
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2011-08-21 05:09:37 +02:00
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g_free(qs->string);
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g_free(qs);
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2009-08-28 20:27:06 +02:00
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}
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