author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 02:56:42 +0300 | |
changeset 68 | ff3fc7722556 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* -*- mode: C; c-file-style: "gnu" -*- */ |
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/* dbus-gloader-expat.c expat XML loader |
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* |
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* Copyright (C) 2003 Red Hat, Inc. |
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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*/ |
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|
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#include "dbus-gparser.h" |
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#include <expat.h> |
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#include <string.h> |
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|
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static void* |
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expat_g_malloc (size_t sz) |
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{ |
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return g_malloc (sz); |
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} |
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|
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static void* |
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expat_g_realloc (void *mem, size_t sz) |
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{ |
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return g_realloc (mem, sz); |
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} |
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|
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static XML_Memory_Handling_Suite memsuite = |
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{ |
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expat_g_malloc, |
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expat_g_realloc, |
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g_free |
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}; |
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|
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/** |
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* Context for Expat parser for introspection data. |
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*/ |
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typedef struct |
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{ |
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Parser *parser; /**< The parser for the introspection data */ |
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const char *filename; /**< The filename being loaded */ |
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GString *content; /**< The content of the current element */ |
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GError **error; /**< Error return location */ |
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gboolean failed; /**< True if parse has failed */ |
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} ExpatParseContext; |
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|
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static dbus_bool_t |
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process_content (ExpatParseContext *context) |
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{ |
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if (context->failed) |
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return FALSE; |
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if (context->content->len > 0) |
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{ |
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if (!parser_content (context->parser, |
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context->content->str, |
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context->content->len, |
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context->error)) |
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{ |
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context->failed = TRUE; |
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return FALSE; |
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} |
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g_string_set_size (context->content, 0); |
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} |
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|
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return TRUE; |
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} |
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|
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static void |
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expat_StartElementHandler (void *userData, |
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const XML_Char *name, |
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const XML_Char **atts) |
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{ |
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ExpatParseContext *context = userData; |
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int i; |
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char **names; |
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char **values; |
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|
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/* Expat seems to suck and can't abort the parse if we |
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* throw an error. Expat 2.0 is supposed to fix this. |
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*/ |
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if (context->failed) |
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return; |
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|
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if (!process_content (context)) |
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return; |
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|
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/* "atts" is key, value, key, value, NULL */ |
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for (i = 0; atts[i] != NULL; ++i) |
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; /* nothing */ |
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|
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g_assert (i % 2 == 0); |
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names = g_new0 (char *, i / 2 + 1); |
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106 |
values = g_new0 (char *, i / 2 + 1); |
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parents:
diff
changeset
|
107 |
|
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parents:
diff
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|
108 |
i = 0; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
109 |
while (atts[i] != NULL) |
e4d67989cc36
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parents:
diff
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|
110 |
{ |
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Revision: 201002
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parents:
diff
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|
111 |
g_assert (i % 2 == 0); |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
112 |
names [i / 2] = (char*) atts[i]; |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
113 |
values[i / 2] = (char*) atts[i+1]; |
e4d67989cc36
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parents:
diff
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|
114 |
|
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Revision: 201002
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parents:
diff
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|
115 |
i += 2; |
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diff
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|
116 |
} |
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diff
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|
117 |
|
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parents:
diff
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|
118 |
if (!parser_start_element (context->parser, |
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|
119 |
name, |
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diff
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|
120 |
(const char **) names, |
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diff
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|
121 |
(const char **) values, |
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Revision: 201002
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diff
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|
122 |
context->error)) |
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diff
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|
123 |
{ |
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Revision: 201002
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parents:
diff
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|
124 |
g_free (names); |
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Revision: 201002
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parents:
diff
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|
125 |
g_free (values); |
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Revision: 201002
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parents:
diff
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|
126 |
context->failed = TRUE; |
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Revision: 201002
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diff
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|
127 |
return; |
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diff
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|
128 |
} |
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parents:
diff
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|
129 |
|
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Revision: 201002
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parents:
diff
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|
130 |
g_free (names); |
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Revision: 201002
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parents:
diff
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|
131 |
g_free (values); |
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|
132 |
} |
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diff
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|
133 |
|
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|
134 |
static void |
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diff
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|
135 |
expat_EndElementHandler (void *userData, |
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parents:
diff
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|
136 |
const XML_Char *name) |
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diff
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|
137 |
{ |
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parents:
diff
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|
138 |
ExpatParseContext *context = userData; |
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parents:
diff
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|
139 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
140 |
if (!process_content (context)) |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
141 |
return; |
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parents:
diff
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|
142 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
143 |
if (!parser_end_element (context->parser, |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
144 |
name, |
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parents:
diff
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|
145 |
context->error)) |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
146 |
{ |
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Revision: 201002
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parents:
diff
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|
147 |
context->failed = TRUE; |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
148 |
return; |
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parents:
diff
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|
149 |
} |
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parents:
diff
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|
150 |
} |
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parents:
diff
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|
151 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
152 |
/* s is not 0 terminated. */ |
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Revision: 201002
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|
153 |
static void |
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parents:
diff
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|
154 |
expat_CharacterDataHandler (void *userData, |
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Revision: 201002
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parents:
diff
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|
155 |
const XML_Char *s, |
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|
156 |
int len) |
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diff
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|
157 |
{ |
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parents:
diff
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|
158 |
ExpatParseContext *context = userData; |
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parents:
diff
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|
159 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
160 |
if (context->failed) |
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Revision: 201002
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parents:
diff
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|
161 |
return; |
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parents:
diff
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|
162 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
163 |
g_string_append_len (context->content, |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
164 |
s, len); |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
165 |
} |
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parents:
diff
changeset
|
166 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
167 |
NodeInfo* |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
168 |
description_load_from_file (const char *filename, |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
169 |
GError **error) |
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Revision: 201002
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parents:
diff
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|
170 |
{ |
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Revision: 201002
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parents:
diff
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|
171 |
char *contents; |
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Revision: 201002
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parents:
diff
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|
172 |
gsize len; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
173 |
NodeInfo *nodes; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
174 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
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|
175 |
contents = NULL; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
176 |
if (!g_file_get_contents (filename, &contents, &len, error)) |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
177 |
return NULL; |
e4d67989cc36
Revision: 201002
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parents:
diff
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|
178 |
|
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Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
179 |
nodes = description_load_from_string (contents, len, error); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
180 |
g_free (contents); |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
181 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
182 |
return nodes; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
183 |
} |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
184 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
185 |
NodeInfo* |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
186 |
description_load_from_string (const char *str, |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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|
187 |
int len, |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
188 |
GError **error) |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
189 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
190 |
XML_Parser expat; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
191 |
ExpatParseContext context; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
192 |
NodeInfo *nodes; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
193 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
194 |
g_return_val_if_fail (error == NULL || *error == NULL, NULL); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
195 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
196 |
if (len < 0) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
197 |
len = strlen (str); |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
198 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
199 |
expat = NULL; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
200 |
context.parser = NULL; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
201 |
context.error = error; |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
202 |
context.failed = FALSE; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
203 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
204 |
expat = XML_ParserCreate_MM ("UTF-8", &memsuite, NULL); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
205 |
if (expat == NULL) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
206 |
g_error ("No memory to create XML parser\n"); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
207 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
208 |
context.parser = parser_new (); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
209 |
context.content = g_string_new (NULL); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
210 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
211 |
XML_SetUserData (expat, &context); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
212 |
XML_SetElementHandler (expat, |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
213 |
expat_StartElementHandler, |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
214 |
expat_EndElementHandler); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
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XML_SetCharacterDataHandler (expat, |
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expat_CharacterDataHandler); |
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217 |
|
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if (!XML_Parse (expat, str, len, TRUE)) |
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219 |
{ |
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if (context.error != NULL && |
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*context.error == NULL) |
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222 |
{ |
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enum XML_Error e; |
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224 |
|
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e = XML_GetErrorCode (expat); |
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if (e == XML_ERROR_NO_MEMORY) |
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g_error ("Not enough memory to parse XML document"); |
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else |
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g_set_error (error, |
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G_MARKUP_ERROR, |
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231 |
G_MARKUP_ERROR_PARSE, |
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"Error in D-BUS description XML, line %d, column %d: %s\n", |
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XML_GetCurrentLineNumber (expat), |
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XML_GetCurrentColumnNumber (expat), |
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XML_ErrorString (e)); |
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} |
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237 |
|
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238 |
goto failed; |
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239 |
} |
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240 |
|
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241 |
if (context.failed) |
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242 |
goto failed; |
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243 |
|
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244 |
if (!parser_finished (context.parser, error)) |
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245 |
goto failed; |
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246 |
|
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247 |
XML_ParserFree (expat); |
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248 |
g_string_free (context.content, TRUE); |
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249 |
|
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250 |
g_return_val_if_fail (error == NULL || *error == NULL, NULL); |
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251 |
nodes = parser_get_nodes (context.parser); |
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252 |
node_info_ref (nodes); |
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253 |
parser_unref (context.parser); |
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254 |
return nodes; |
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255 |
|
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256 |
failed: |
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257 |
g_return_val_if_fail (error == NULL || *error != NULL, NULL); |
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|
258 |
|
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259 |
g_string_free (context.content, TRUE); |
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260 |
if (expat) |
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261 |
XML_ParserFree (expat); |
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262 |
if (context.parser) |
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|
263 |
parser_unref (context.parser); |
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|
264 |
return NULL; |
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265 |
} |
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diff
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|
266 |