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122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* dbus-string-util.c Would be in dbus-string.c, but not used in libdbus
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*
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* Copyright 2002-2008 Red Hat, Inc.
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* Copyright 2003 CodeFactory AB
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* Copyright 2003 Mark McLoughlin
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* Copyright 2004 Michael Meeks
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* Copyright 2006-2015 Ralf Habacker <ralf.habacker@freenet.de>
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* Copyright 2007 Allison Lortie
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* Copyright 2011 Roberto Guido
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* Copyright 2016-2018 Collabora Ltd.
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <config.h>
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#include "dbus-internals.h"
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#include "dbus-string.h"
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#define DBUS_CAN_USE_DBUS_STRING_PRIVATE 1
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#include "dbus-string-private.h"
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/**
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* @addtogroup DBusString
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* @{
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*/
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/**
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* Returns whether a string ends with the given suffix
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*
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* @todo memcmp might make this faster.
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*
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* @param a the string
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* @param c_str the C-style string
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* @returns #TRUE if the string ends with the suffix
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*/
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dbus_bool_t
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_dbus_string_ends_with_c_str (const DBusString *a,
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const char *c_str)
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{
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const unsigned char *ap;
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const unsigned char *bp;
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const unsigned char *a_end;
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unsigned long c_str_len;
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const DBusRealString *real_a = (const DBusRealString*) a;
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DBUS_GENERIC_STRING_PREAMBLE (real_a);
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_dbus_assert (c_str != NULL);
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c_str_len = strlen (c_str);
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if (((unsigned long)real_a->len) < c_str_len)
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return FALSE;
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ap = real_a->str + (real_a->len - c_str_len);
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bp = (const unsigned char*) c_str;
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a_end = real_a->str + real_a->len;
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while (ap != a_end)
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{
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if (*ap != *bp)
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return FALSE;
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++ap;
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++bp;
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}
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_dbus_assert (*ap == '\0');
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_dbus_assert (*bp == '\0');
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return TRUE;
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}
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/**
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* Find the given byte scanning backward from the given start.
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* Sets *found to -1 if the byte is not found.
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*
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* @param str the string
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* @param start the place to start scanning (will not find the byte at this point)
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* @param byte the byte to find
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* @param found return location for where it was found
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* @returns #TRUE if found
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*/
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dbus_bool_t
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_dbus_string_find_byte_backward (const DBusString *str,
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int start,
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unsigned char byte,
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int *found)
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{
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int i;
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DBUS_CONST_STRING_PREAMBLE (str);
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_dbus_assert (start <= real->len);
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_dbus_assert (start >= 0);
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_dbus_assert (found != NULL);
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i = start - 1;
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while (i >= 0)
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{
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if (real->str[i] == byte)
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break;
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--i;
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}
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if (found)
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*found = i;
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return i >= 0;
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}
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/** @} */
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