author | hgs |
Thu, 05 Aug 2010 20:12:17 +0530 | |
changeset 49 | e5d77a29bdca |
parent 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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/* GLIB - Library of useful routines for C programming |
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
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* Portions copyright (c) 2006-2009 Nokia Corporation. All rights reserved. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library 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 GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/* |
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS |
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* file for a list of people on the GLib Team. See the ChangeLog |
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* files for a list of changes. These files are distributed with |
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* GLib at ftp://ftp.gtk.org/pub/gtk/. |
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*/ |
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#include "config.h" |
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#include "glib.h" |
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#include "galias.h" |
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static GError* |
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g_error_new_valist (GQuark domain, |
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gint code, |
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const gchar *format, |
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va_list args) |
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{ |
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GError *error; |
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error = g_slice_new (GError); |
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error->domain = domain; |
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error->code = code; |
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error->message = g_strdup_vprintf (format, args); |
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return error; |
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} |
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/** |
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* g_error_new: |
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* @domain: error domain |
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* @code: error code |
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* @format: printf()-style format for error message |
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* @Varargs: parameters for message format |
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* |
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* Creates a new #GError with the given @domain and @code, |
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* and a message formatted with @format. |
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* |
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* Return value: a new #GError |
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**/ |
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EXPORT_C GError* |
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g_error_new (GQuark domain, |
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gint code, |
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const gchar *format, |
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...) |
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{ |
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GError* error; |
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va_list args; |
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g_return_val_if_fail (format != NULL, NULL); |
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g_return_val_if_fail (domain != 0, NULL); |
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va_start (args, format); |
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error = g_error_new_valist (domain, code, format, args); |
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va_end (args); |
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return error; |
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} |
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/** |
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* g_error_new_literal: |
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* @domain: error domain |
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* @code: error code |
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* @message: error message |
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* |
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* Creates a new #GError; unlike g_error_new(), @message is not |
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* a printf()-style format string. Use this |
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* function if @message contains text you don't have control over, |
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* that could include printf() escape sequences. |
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* |
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* Return value: a new #GError |
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**/ |
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EXPORT_C GError* |
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g_error_new_literal (GQuark domain, |
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gint code, |
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const gchar *message) |
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{ |
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GError* err; |
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g_return_val_if_fail (message != NULL, NULL); |
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g_return_val_if_fail (domain != 0, NULL); |
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err = g_slice_new (GError); |
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106 |
|
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err->domain = domain; |
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err->code = code; |
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err->message = g_strdup (message); |
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110 |
|
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return err; |
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} |
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113 |
|
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114 |
/** |
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* g_error_free: |
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* @error: a #GError |
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* |
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* Frees a #GError and associated resources. |
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119 |
* |
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120 |
**/ |
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EXPORT_C void |
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g_error_free (GError *error) |
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123 |
{ |
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g_return_if_fail (error != NULL); |
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125 |
|
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g_free (error->message); |
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127 |
|
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g_slice_free (GError, error); |
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} |
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130 |
|
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/** |
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* g_error_copy: |
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* @error: a #GError |
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* |
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* Makes a copy of @error. |
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* |
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* Return value: a new #GError |
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**/ |
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EXPORT_C GError* |
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g_error_copy (const GError *error) |
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141 |
{ |
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GError *copy; |
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143 |
|
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g_return_val_if_fail (error != NULL, NULL); |
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145 |
|
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copy = g_slice_new (GError); |
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147 |
|
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*copy = *error; |
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149 |
|
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copy->message = g_strdup (error->message); |
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151 |
|
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return copy; |
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} |
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154 |
|
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155 |
/** |
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* g_error_matches: |
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* @error: a #GError |
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* @domain: an error domain |
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* @code: an error code |
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* |
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* Returns %TRUE if @error matches @domain and @code, %FALSE |
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* otherwise. |
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163 |
* |
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* Return value: whether @error has @domain and @code |
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**/ |
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EXPORT_C gboolean |
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g_error_matches (const GError *error, |
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GQuark domain, |
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gint code) |
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170 |
{ |
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return error && |
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error->domain == domain && |
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error->code == code; |
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} |
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175 |
|
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#define ERROR_OVERWRITTEN_WARNING "GError set over the top of a previous GError or uninitialized memory.\n" \ |
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"This indicates a bug in someone's code. You must ensure an error is NULL before it's set.\n" \ |
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"The overwriting error message was: %s" |
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179 |
|
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/** |
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* g_set_error: |
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* @err: a return location for a #GError, or %NULL |
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* @domain: error domain |
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* @code: error code |
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* @format: printf()-style format |
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* @Varargs: args for @format |
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* |
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* Does nothing if @err is %NULL; if @err is non-%NULL, then *@err must |
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* be %NULL. A new #GError is created and assigned to *@err. |
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**/ |
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191 |
EXPORT_C void |
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g_set_error (GError **err, |
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GQuark domain, |
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gint code, |
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const gchar *format, |
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...) |
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197 |
{ |
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GError *new; |
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199 |
|
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va_list args; |
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201 |
|
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if (err == NULL) |
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return; |
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204 |
|
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va_start (args, format); |
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new = g_error_new_valist (domain, code, format, args); |
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va_end (args); |
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208 |
|
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if (*err == NULL) |
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*err = new; |
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else |
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g_warning (ERROR_OVERWRITTEN_WARNING, new->message); |
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} |
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|
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/** |
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* g_set_error_literal: |
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* @err: a return location for a #GError, or %NULL |
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* @domain: error domain |
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* @code: error code |
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* @message: error message |
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* |
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* Does nothing if @err is %NULL; if @err is non-%NULL, then *@err must |
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* be %NULL. A new #GError is created and assigned to *@err. |
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* Unlike g_set_error(), @message is not a printf()-style format string. |
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* Use this function if @message contains text you don't have control over, |
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* that could include printf() escape sequences. |
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* |
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* Since: 2.18 |
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**/ |
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EXPORT_C void |
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g_set_error_literal (GError **err, |
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GQuark domain, |
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gint code, |
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const gchar *message) |
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{ |
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GError *new; |
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|
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if (err == NULL) |
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return; |
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|
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new = g_error_new_literal (domain, code, message); |
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if (*err == NULL) |
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*err = new; |
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else |
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g_warning (ERROR_OVERWRITTEN_WARNING, new->message); |
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} |
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247 |
|
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/** |
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* g_propagate_error: |
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* @dest: error return location |
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* @src: error to move into the return location |
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* |
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* If @dest is %NULL, free @src; otherwise, moves @src into *@dest. |
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* The error variable @dest points to must be %NULL. |
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**/ |
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EXPORT_C void |
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g_propagate_error (GError **dest, |
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GError *src) |
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{ |
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g_return_if_fail (src != NULL); |
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|
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if (dest == NULL) |
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{ |
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if (src) |
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g_error_free (src); |
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return; |
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} |
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else |
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{ |
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if (*dest != NULL) |
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g_warning (ERROR_OVERWRITTEN_WARNING, src->message); |
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else |
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*dest = src; |
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} |
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} |
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|
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/** |
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* g_clear_error: |
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* @err: a #GError return location |
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* |
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* If @err is %NULL, does nothing. If @err is non-%NULL, |
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* calls g_error_free() on *@err and sets *@err to %NULL. |
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**/ |
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EXPORT_C void |
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g_clear_error (GError **err) |
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{ |
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if (err && *err) |
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{ |
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g_error_free (*err); |
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*err = NULL; |
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} |
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} |
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293 |
|
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static void |
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g_error_add_prefix (gchar **string, |
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const gchar *format, |
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va_list ap) |
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{ |
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gchar *oldstring; |
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gchar *prefix; |
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|
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prefix = g_strdup_vprintf (format, ap); |
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oldstring = *string; |
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*string = g_strconcat (prefix, oldstring, NULL); |
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g_free (oldstring); |
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g_free (prefix); |
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} |
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|
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/** |
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* g_prefix_error: |
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* @err: a return location for a #GError, or %NULL |
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* @format: printf()-style format string |
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* @...: arguments to @format |
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* |
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* Formats a string according to @format and |
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* prefix it to an existing error message. If |
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* @err is %NULL (ie: no error variable) then do |
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* nothing. |
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* |
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* If *@err is %NULL (ie: an error variable is |
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* present but there is no error condition) then |
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* also do nothing. Whether or not it makes |
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* sense to take advantage of this feature is up |
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* to you. |
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* |
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* Since: 2.16 |
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**/ |
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EXPORT_C void |
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g_prefix_error (GError **err, |
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const gchar *format, |
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...) |
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{ |
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if (err && *err) |
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{ |
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va_list ap; |
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|
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va_start (ap, format); |
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g_error_add_prefix (&(*err)->message, format, ap); |
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va_end (ap); |
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} |
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} |
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|
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/** |
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* g_propagate_prefixed_error: |
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* @dest: error return location |
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* @src: error to move into the return location |
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* @format: printf()-style format string |
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* @...: arguments to @format |
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* |
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* If @dest is %NULL, free @src; otherwise, |
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* moves @src into *@dest. *@dest must be %NULL. |
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* After the move, add a prefix as with |
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* g_prefix_error(). |
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* |
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* Since: 2.16 |
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**/ |
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EXPORT_C void |
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g_propagate_prefixed_error (GError **dest, |
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GError *src, |
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const gchar *format, |
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...) |
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{ |
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g_propagate_error (dest, src); |
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|
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if (dest && *dest) |
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{ |
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va_list ap; |
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|
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va_start (ap, format); |
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g_error_add_prefix (&(*dest)->message, format, ap); |
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va_end (ap); |
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} |
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} |
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|
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#define __G_ERROR_C__ |
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#include "galiasdef.c" |