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<hr><h1>desktop-file.c</h1><div class="fragment"><pre>00001 <font class="comment">/* -*- mode: C; c-file-style: "gnu" -*- */</font>
00002 <font class="comment">/* desktop-file.c .desktop file parser</font>
00003 <font class="comment"> *</font>
00004 <font class="comment"> * Copyright (C) 2003 CodeFactory AB</font>
00005 <font class="comment"> * Copyright (C) 2003 Red Hat Inc.</font>
00006 <font class="comment"> *</font>
00007 <font class="comment"> * Licensed under the Academic Free License version 1.2</font>
00008 <font class="comment"> * </font>
00009 <font class="comment"> * This program is free software; you can redistribute it and/or modify</font>
00010 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00011 <font class="comment"> * the Free Software Foundation; either version 2 of the License, or</font>
00012 <font class="comment"> * (at your option) any later version.</font>
00013 <font class="comment"> *</font>
00014 <font class="comment"> * This program is distributed in the hope that it will be useful,</font>
00015 <font class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00016 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00017 <font class="comment"> * GNU General Public License for more details.</font>
00018 <font class="comment"> * </font>
00019 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00020 <font class="comment"> * along with this program; if not, write to the Free Software</font>
00021 <font class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00022 <font class="comment"> *</font>
00023 <font class="comment"> */</font>
00024 <font class="preprocessor">#include <dbus/dbus-sysdeps.h></font>
00025 <font class="preprocessor">#include <dbus/dbus-internals.h></font>
00026 <font class="preprocessor">#include "desktop-file.h"</font>
00027 <font class="preprocessor">#include "utils.h"</font>
00028
00029 <font class="keyword">typedef</font> <font class="keyword">struct</font>
00030 <font class="keyword"></font>{
00031 <font class="keywordtype">char</font> *key;
00032 <font class="keywordtype">char</font> *value;
00033 } BusDesktopFileLine;
00034
00035 <font class="keyword">typedef</font> <font class="keyword">struct</font>
00036 <font class="keyword"></font>{
00037 <font class="keywordtype">char</font> *section_name;
00038
00039 <font class="keywordtype">int</font> n_lines;
00040 BusDesktopFileLine *lines;
00041 <font class="keywordtype">int</font> n_allocated_lines;
00042 } BusDesktopFileSection;
00043
00044 <font class="keyword">struct </font>BusDesktopFile
00045 {
00046 <font class="keywordtype">int</font> n_sections;
00047 BusDesktopFileSection *sections;
00048 <font class="keywordtype">int</font> n_allocated_sections;
00049 };
00050
<a name="l00054"></a><a class="code" href="structBusDesktopFileParser.html">00054</a> <font class="keyword">typedef</font> <font class="keyword">struct</font>
00055 <font class="keyword"></font>{
<a name="l00056"></a><a class="code" href="structBusDesktopFileParser.html#m0">00056</a> <a class="code" href="structDBusString.html">DBusString</a> data;
<a name="l00058"></a><a class="code" href="structBusDesktopFileParser.html#m1">00058</a> BusDesktopFile *desktop_file;
<a name="l00059"></a><a class="code" href="structBusDesktopFileParser.html#m2">00059</a> <font class="keywordtype">int</font> current_section;
<a name="l00061"></a><a class="code" href="structBusDesktopFileParser.html#m3">00061</a> <font class="keywordtype">int</font> pos;
<a name="l00062"></a><a class="code" href="structBusDesktopFileParser.html#m4">00062</a> <font class="keywordtype">int</font> len;
<a name="l00063"></a><a class="code" href="structBusDesktopFileParser.html#m5">00063</a> <font class="keywordtype">int</font> line_num;
00065 } <a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a>;
00066
00067 <font class="preprocessor">#define VALID_KEY_CHAR 1</font>
00068 <font class="preprocessor"></font><font class="preprocessor">#define VALID_LOCALE_CHAR 2</font>
00069 <font class="preprocessor"></font><font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> valid[256] = {
00070 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00071 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00072 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x3 , 0x2 , 0x0 ,
00073 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00074 0x0 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 ,
00075 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x0 , 0x0 , 0x0 , 0x0 , 0x2 ,
00076 0x0 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 ,
00077 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x3 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00078 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00079 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00080 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00081 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00082 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00083 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00084 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00085 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 , 0x0 ,
00086 };
00087
00088 <font class="keyword">static</font> <font class="keywordtype">void</font> report_error (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser,
00089 <font class="keywordtype">char</font> *message,
00090 <font class="keyword">const</font> <font class="keywordtype">char</font> *error_name,
00091 <a class="code" href="structDBusError.html">DBusError</a> *error);
00092
00093 <font class="keyword">static</font> <font class="keywordtype">void</font>
00094 parser_free (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser)
00095 {
00096 bus_desktop_file_free (parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>);
00097
00098 _dbus_string_free (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>);
00099 }
00100
00101 <font class="keyword">static</font> <font class="keywordtype">void</font>
00102 bus_desktop_file_line_free (BusDesktopFileLine *line)
00103 {
00104 dbus_free (line->key);
00105 dbus_free (line->value);
00106 }
00107
00108 <font class="keyword">static</font> <font class="keywordtype">void</font>
00109 bus_desktop_file_section_free (BusDesktopFileSection *section)
00110 {
00111 <font class="keywordtype">int</font> i;
00112
00113 <font class="keywordflow">for</font> (i = 0; i < section->n_lines; i++)
00114 bus_desktop_file_line_free (&section->lines[i]);
00115
00116 dbus_free (section->lines);
00117 dbus_free (section->section_name);
00118 }
00119
00120 <font class="keywordtype">void</font>
00121 bus_desktop_file_free (BusDesktopFile *desktop_file)
00122 {
00123 <font class="keywordtype">int</font> i;
00124
00125 <font class="keywordflow">for</font> (i = 0; i < desktop_file->n_sections; i++)
00126 bus_desktop_file_section_free (&desktop_file->sections[i]);
00127 dbus_free (desktop_file->sections);
00128
00129 dbus_free (desktop_file);
00130 }
00131
00132 <font class="keyword">static</font> dbus_bool_t
00133 grow_lines_in_section (BusDesktopFileSection *section)
00134 {
00135 BusDesktopFileLine *lines;
00136
00137 <font class="keywordtype">int</font> new_n_lines;
00138
00139 <font class="keywordflow">if</font> (section->n_allocated_lines == 0)
00140 new_n_lines = 1;
00141 <font class="keywordflow">else</font>
00142 new_n_lines = section->n_allocated_lines*2;
00143
00144 lines = dbus_realloc (section->lines,
00145 sizeof (BusDesktopFileLine) * new_n_lines);
00146
00147 <font class="keywordflow">if</font> (lines == NULL)
00148 <font class="keywordflow">return</font> FALSE;
00149
00150 section->lines = lines;
00151 section->n_allocated_lines = new_n_lines;
00152
00153 <font class="keywordflow">return</font> TRUE;
00154 }
00155
00156 <font class="keyword">static</font> dbus_bool_t
00157 grow_sections (BusDesktopFile *desktop_file)
00158 {
00159 <font class="keywordtype">int</font> new_n_sections;
00160 BusDesktopFileSection *sections;
00161
00162 <font class="keywordflow">if</font> (desktop_file->n_allocated_sections == 0)
00163 new_n_sections = 1;
00164 <font class="keywordflow">else</font>
00165 new_n_sections = desktop_file->n_allocated_sections*2;
00166
00167 sections = dbus_realloc (desktop_file->sections,
00168 sizeof (BusDesktopFileSection) * new_n_sections);
00169 <font class="keywordflow">if</font> (sections == NULL)
00170 <font class="keywordflow">return</font> FALSE;
00171
00172 desktop_file->sections = sections;
00173
00174 desktop_file->n_allocated_sections = new_n_sections;
00175
00176 <font class="keywordflow">return</font> TRUE;
00177 }
00178
00179 <font class="keyword">static</font> <font class="keywordtype">char</font> *
00180 unescape_string (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser,
00181 <font class="keyword">const</font> <a class="code" href="structDBusString.html">DBusString</a> *str,
00182 <font class="keywordtype">int</font> pos,
00183 <font class="keywordtype">int</font> end_pos,
00184 <a class="code" href="structDBusError.html">DBusError</a> *error)
00185 {
00186 <font class="keywordtype">char</font> *retval, *q;
00187
00188 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00189
00190 <font class="comment">/* len + 1 is enough, because unescaping never makes the</font>
00191 <font class="comment"> * string longer</font>
00192 <font class="comment"> */</font>
00193 retval = dbus_malloc (end_pos - pos + 1);
00194 <font class="keywordflow">if</font> (retval == NULL)
00195 {
00196 BUS_SET_OOM (error);
00197 <font class="keywordflow">return</font> NULL;
00198 }
00199
00200 q = retval;
00201
00202 <font class="keywordflow">while</font> (pos < end_pos)
00203 {
00204 <font class="keywordflow">if</font> (_dbus_string_get_byte (str, pos) == 0)
00205 {
00206 <font class="comment">/* Found an embedded null */</font>
00207 dbus_free (retval);
00208 report_error (parser, <font class="stringliteral">"Text to be unescaped contains embedded nul"</font>,
00209 BUS_DESKTOP_PARSE_ERROR_INVALID_ESCAPES, error);
00210 <font class="keywordflow">return</font> NULL;
00211 }
00212
00213 <font class="keywordflow">if</font> (_dbus_string_get_byte (str, pos) == <font class="charliteral">'\\'</font>)
00214 {
00215 pos ++;
00216
00217 <font class="keywordflow">if</font> (pos >= end_pos)
00218 {
00219 <font class="comment">/* Escape at end of string */</font>
00220 dbus_free (retval);
00221 report_error (parser, <font class="stringliteral">"Text to be unescaped ended in \\"</font>,
00222 BUS_DESKTOP_PARSE_ERROR_INVALID_ESCAPES, error);
00223 <font class="keywordflow">return</font> NULL;
00224 }
00225
00226 <font class="keywordflow">switch</font> (_dbus_string_get_byte (str, pos))
00227 {
00228 <font class="keywordflow">case</font> <font class="charliteral">'s'</font>:
00229 *q++ = <font class="charliteral">' '</font>;
00230 <font class="keywordflow">break</font>;
00231 <font class="keywordflow">case</font> <font class="charliteral">'t'</font>:
00232 *q++ = <font class="charliteral">'\t'</font>;
00233 <font class="keywordflow">break</font>;
00234 <font class="keywordflow">case</font> <font class="charliteral">'n'</font>:
00235 *q++ = <font class="charliteral">'\n'</font>;
00236 <font class="keywordflow">break</font>;
00237 <font class="keywordflow">case</font> <font class="charliteral">'r'</font>:
00238 *q++ = <font class="charliteral">'\r'</font>;
00239 <font class="keywordflow">break</font>;
00240 <font class="keywordflow">case</font> <font class="charliteral">'\\'</font>:
00241 *q++ = <font class="charliteral">'\\'</font>;
00242 <font class="keywordflow">break</font>;
00243 <font class="keywordflow">default</font>:
00244 <font class="comment">/* Invalid escape code */</font>
00245 dbus_free (retval);
00246 report_error (parser, <font class="stringliteral">"Text to be unescaped had invalid escape sequence"</font>,
00247 BUS_DESKTOP_PARSE_ERROR_INVALID_ESCAPES, error);
00248 <font class="keywordflow">return</font> NULL;
00249 }
00250 pos++;
00251 }
00252 <font class="keywordflow">else</font>
00253 {
00254 *q++ =_dbus_string_get_byte (str, pos);
00255
00256 pos++;
00257 }
00258 }
00259
00260 *q = 0;
00261
00262 <font class="keywordflow">return</font> retval;
00263 }
00264
00265 <font class="keyword">static</font> BusDesktopFileSection*
00266 new_section (BusDesktopFile *desktop_file,
00267 <font class="keyword">const</font> <font class="keywordtype">char</font> *name)
00268 {
00269 <font class="keywordtype">int</font> n;
00270 <font class="keywordtype">char</font> *name_copy;
00271
00272 <font class="keywordflow">if</font> (desktop_file->n_allocated_sections == desktop_file->n_sections)
00273 {
00274 <font class="keywordflow">if</font> (!grow_sections (desktop_file))
00275 <font class="keywordflow">return</font> NULL;
00276 }
00277
00278 name_copy = _dbus_strdup (name);
00279 <font class="keywordflow">if</font> (name_copy == NULL)
00280 <font class="keywordflow">return</font> NULL;
00281
00282 n = desktop_file->n_sections;
00283 desktop_file->sections[n].section_name = name_copy;
00284
00285 desktop_file->sections[n].n_lines = 0;
00286 desktop_file->sections[n].lines = NULL;
00287 desktop_file->sections[n].n_allocated_lines = 0;
00288
00289 <font class="keywordflow">if</font> (!grow_lines_in_section (&desktop_file->sections[n]))
00290 {
00291 dbus_free (desktop_file->sections[n].section_name);
00292 desktop_file->sections[n].section_name = NULL;
00293 <font class="keywordflow">return</font> NULL;
00294 }
00295
00296 desktop_file->n_sections += 1;
00297
00298 <font class="keywordflow">return</font> &desktop_file->sections[n];
00299 }
00300
00301 <font class="keyword">static</font> BusDesktopFileSection*
00302 open_section (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser,
00303 <font class="keywordtype">char</font> *name)
00304 {
00305 BusDesktopFileSection *section;
00306
00307 section = new_section (parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>, name);
00308 <font class="keywordflow">if</font> (section == NULL)
00309 <font class="keywordflow">return</font> NULL;
00310
00311 parser-><a class="code" href="structBusDesktopFileParser.html#m2">current_section</a> = parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>->n_sections - 1;
00312 _dbus_assert (&parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>->sections[parser-><a class="code" href="structBusDesktopFileParser.html#m2">current_section</a>] == section);
00313
00314 <font class="keywordflow">return</font> section;
00315 }
00316
00317 <font class="keyword">static</font> BusDesktopFileLine *
00318 new_line (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser)
00319 {
00320 BusDesktopFileSection *section;
00321 BusDesktopFileLine *line;
00322
00323 section = &parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>->sections[parser-><a class="code" href="structBusDesktopFileParser.html#m2">current_section</a>];
00324
00325 <font class="keywordflow">if</font> (section->n_allocated_lines == section->n_lines)
00326 {
00327 <font class="keywordflow">if</font> (!grow_lines_in_section (section))
00328 <font class="keywordflow">return</font> NULL;
00329 }
00330
00331 line = &section->lines[section->n_lines++];
00332
00333 memset (line, 0, <font class="keyword">sizeof</font> (BusDesktopFileLine));
00334
00335 <font class="keywordflow">return</font> line;
00336 }
00337
00338 <font class="keyword">static</font> dbus_bool_t
00339 is_blank_line (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser)
00340 {
00341 <font class="keywordtype">int</font> p;
00342 <font class="keywordtype">char</font> c;
00343
00344 p = parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a>;
00345
00346 c = _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p);
00347
00348 <font class="keywordflow">while</font> (c && c != <font class="charliteral">'\n'</font>)
00349 {
00350 <font class="keywordflow">if</font> (!(c == <font class="charliteral">' '</font> || c == <font class="charliteral">'\t'</font> || c == <font class="charliteral">'\n'</font> || c == <font class="charliteral">'\r'</font> || c == <font class="charliteral">'\f'</font>))
00351 <font class="keywordflow">return</font> FALSE;
00352
00353 p++;
00354 c = _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p);
00355 }
00356
00357 <font class="keywordflow">return</font> TRUE;
00358 }
00359
00360 <font class="keyword">static</font> <font class="keywordtype">void</font>
00361 parse_comment_or_blank (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser)
00362 {
00363 <font class="keywordtype">int</font> line_end;
00364
00365 <font class="keywordflow">if</font> (!_dbus_string_find (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a>, <font class="stringliteral">"\n"</font>, &line_end))
00366 line_end = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00367
00368 <font class="keywordflow">if</font> (line_end == parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>)
00369 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00370 <font class="keywordflow">else</font>
00371 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = line_end + 1;
00372
00373 parser-><a class="code" href="structBusDesktopFileParser.html#m5">line_num</a> += 1;
00374 }
00375
00376 <font class="keyword">static</font> dbus_bool_t
00377 is_valid_section_name (<font class="keyword">const</font> <font class="keywordtype">char</font> *name)
00378 {
00379 <font class="comment">/* 5. Group names may contain all ASCII characters except for control characters and '[' and ']'. */</font>
00380
00381 <font class="keywordflow">while</font> (*name)
00382 {
00383 <font class="keywordflow">if</font> (!((*name >= <font class="charliteral">'A'</font> && *name <= 'Z') || (*name >= <font class="charliteral">'a'</font> || *name <= <font class="charliteral">'z'</font>) ||
00384 *name == <font class="charliteral">'\n'</font> || *name == <font class="charliteral">'\t'</font>))
00385 <font class="keywordflow">return</font> FALSE;
00386
00387 name++;
00388 }
00389
00390 <font class="keywordflow">return</font> TRUE;
00391 }
00392
00393 <font class="keyword">static</font> dbus_bool_t
00394 parse_section_start (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser, <a class="code" href="structDBusError.html">DBusError</a> *error)
00395 {
00396 <font class="keywordtype">int</font> line_end;
00397 <font class="keywordtype">char</font> *section_name;
00398
00399 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00400
00401 <font class="keywordflow">if</font> (!_dbus_string_find (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a>, <font class="stringliteral">"\n"</font>, &line_end))
00402 line_end = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00403
00404 <font class="keywordflow">if</font> (line_end - parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> <= 2 ||
00405 _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, line_end - 1) != <font class="charliteral">']'</font>)
00406 {
00407 report_error (parser, <font class="stringliteral">"Invalid syntax for section header"</font>, BUS_DESKTOP_PARSE_ERROR_INVALID_SYNTAX, error);
00408 parser_free (parser);
00409 <font class="keywordflow">return</font> FALSE;
00410 }
00411
00412 section_name = unescape_string (parser,
00413 &parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> + 1, line_end - 1,
00414 error);
00415
00416 <font class="keywordflow">if</font> (section_name == NULL)
00417 {
00418 parser_free (parser);
00419 <font class="keywordflow">return</font> FALSE;
00420 }
00421
00422 <font class="keywordflow">if</font> (!is_valid_section_name (section_name))
00423 {
00424 report_error (parser, <font class="stringliteral">"Invalid characters in section name"</font>, BUS_DESKTOP_PARSE_ERROR_INVALID_CHARS, error);
00425 parser_free (parser);
00426 dbus_free (section_name);
00427 <font class="keywordflow">return</font> FALSE;
00428 }
00429
00430 <font class="keywordflow">if</font> (open_section (parser, section_name) == NULL)
00431 {
00432 dbus_free (section_name);
00433 <font class="keywordflow">return</font> FALSE;
00434 }
00435
00436 <font class="keywordflow">if</font> (line_end == parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>)
00437 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00438 <font class="keywordflow">else</font>
00439 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = line_end + 1;
00440
00441 parser-><a class="code" href="structBusDesktopFileParser.html#m5">line_num</a> += 1;
00442
00443 dbus_free (section_name);
00444
00445 <font class="keywordflow">return</font> TRUE;
00446 }
00447
00448 <font class="keyword">static</font> dbus_bool_t
00449 parse_key_value (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser, <a class="code" href="structDBusError.html">DBusError</a> *error)
00450 {
00451 <font class="keywordtype">int</font> line_end;
00452 <font class="keywordtype">int</font> key_start, key_end;
00453 <font class="keywordtype">int</font> value_start;
00454 <font class="keywordtype">int</font> p;
00455 <font class="keywordtype">char</font> *value, *tmp;
00456 <a class="code" href="structDBusString.html">DBusString</a> key;
00457 BusDesktopFileLine *line;
00458
00459 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00460
00461 <font class="keywordflow">if</font> (!_dbus_string_find (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a>, <font class="stringliteral">"\n"</font>, &line_end))
00462 line_end = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00463
00464 p = parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a>;
00465 key_start = p;
00466 <font class="keywordflow">while</font> (p < line_end &&
00467 (valid[_dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p)] & VALID_KEY_CHAR))
00468 p++;
00469 key_end = p;
00470
00471 <font class="keywordflow">if</font> (key_start == key_end)
00472 {
00473 report_error (parser, <font class="stringliteral">"Empty key name"</font>, BUS_DESKTOP_PARSE_ERROR_INVALID_SYNTAX, error);
00474 parser_free (parser);
00475 <font class="keywordflow">return</font> FALSE;
00476 }
00477
00478 <font class="comment">/* We ignore locales for now */</font>
00479
00480 <font class="comment">/* Skip space before '=' */</font>
00481 <font class="keywordflow">while</font> (p < line_end && _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p) == <font class="charliteral">' '</font>)
00482 p++;
00483
00484 <font class="keywordflow">if</font> (p < line_end && _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p) != <font class="charliteral">'='</font>)
00485 {
00486 report_error (parser, <font class="stringliteral">"Invalid characters in key name"</font>, BUS_DESKTOP_PARSE_ERROR_INVALID_CHARS, error);
00487 parser_free (parser);
00488 <font class="keywordflow">return</font> FALSE;
00489 }
00490
00491 <font class="keywordflow">if</font> (p == line_end)
00492 {
00493 report_error (parser, <font class="stringliteral">"No '=' in key/value pair"</font>, BUS_DESKTOP_PARSE_ERROR_INVALID_SYNTAX, error);
00494 parser_free (parser);
00495 <font class="keywordflow">return</font> FALSE;
00496 }
00497
00498 <font class="comment">/* Skip the '=' */</font>
00499 p++;
00500
00501 <font class="comment">/* Skip space after '=' */</font>
00502 <font class="keywordflow">while</font> (p < line_end && _dbus_string_get_byte (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, p) == <font class="charliteral">' '</font>)
00503 p++;
00504
00505 value_start = p;
00506
00507 value = unescape_string (parser, &parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, value_start, line_end, error);
00508 <font class="keywordflow">if</font> (value == NULL)
00509 {
00510 parser_free (parser);
00511 <font class="keywordflow">return</font> FALSE;
00512 }
00513
00514 line = new_line (parser);
00515 <font class="keywordflow">if</font> (line == NULL)
00516 {
00517 parser_free (parser);
00518 <font class="keywordflow">return</font> FALSE;
00519 }
00520
00521 <font class="keywordflow">if</font> (!_dbus_string_init (&key))
00522 {
00523 parser_free (parser);
00524 <font class="keywordflow">return</font> FALSE;
00525 }
00526
00527 <font class="keywordflow">if</font> (!_dbus_string_copy_len (&parser-><a class="code" href="structBusDesktopFileParser.html#m0">data</a>, key_start, key_end - key_start,
00528 &key, 0))
00529 {
00530 parser_free (parser);
00531 <font class="keywordflow">return</font> FALSE;
00532 }
00533
00534 <font class="keywordflow">if</font> (!_dbus_string_steal_data (&key, &tmp))
00535 {
00536 parser_free (parser);
00537 <font class="keywordflow">return</font> FALSE;
00538 }
00539
00540 _dbus_string_free (&key);
00541
00542 line->key = tmp;
00543 line->value = value;
00544
00545 <font class="keywordflow">if</font> (line_end == parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>)
00546 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = parser-><a class="code" href="structBusDesktopFileParser.html#m4">len</a>;
00547 <font class="keywordflow">else</font>
00548 parser-><a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = line_end + 1;
00549
00550 parser-><a class="code" href="structBusDesktopFileParser.html#m5">line_num</a> += 1;
00551
00552 <font class="keywordflow">return</font> TRUE;
00553 }
00554
00555 <font class="keyword">static</font> <font class="keywordtype">void</font>
00556 report_error (<a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> *parser,
00557 <font class="keywordtype">char</font> *message,
00558 <font class="keyword">const</font> <font class="keywordtype">char</font> *error_name,
00559 <a class="code" href="structDBusError.html">DBusError</a> *error)
00560 {
00561 <font class="keyword">const</font> <font class="keywordtype">char</font> *section_name = NULL;
00562
00563 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00564
00565 <font class="keywordflow">if</font> (parser-><a class="code" href="structBusDesktopFileParser.html#m2">current_section</a> != -1)
00566 section_name = parser-><a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>->sections[parser-><a class="code" href="structBusDesktopFileParser.html#m2">current_section</a>].section_name;
00567
00568 <font class="keywordflow">if</font> (section_name)
00569 dbus_set_error (error, error_name,
00570 <font class="stringliteral">"Error in section %s at line %d: %s\n"</font>, section_name, parser-><a class="code" href="structBusDesktopFileParser.html#m5">line_num</a>, message);
00571 <font class="keywordflow">else</font>
00572 dbus_set_error (error, error_name,
00573 <font class="stringliteral">"Error at line %d: %s\n"</font>, parser-><a class="code" href="structBusDesktopFileParser.html#m5">line_num</a>, message);
00574 }
00575
00576 <font class="preprocessor">#if 0</font>
00577 <font class="preprocessor"></font><font class="keyword">static</font> <font class="keywordtype">void</font>
00578 dump_desktop_file (BusDesktopFile *file)
00579 {
00580 <font class="keywordtype">int</font> i;
00581
00582 <font class="keywordflow">for</font> (i = 0; i < file->n_sections; i++)
00583 {
00584 <font class="keywordtype">int</font> j;
00585
00586 printf (<font class="stringliteral">"[%s]\n"</font>, file->sections[i].section_name);
00587
00588 <font class="keywordflow">for</font> (j = 0; j < file->sections[i].n_lines; j++)
00589 {
00590 printf (<font class="stringliteral">"%s=%s\n"</font>, file->sections[i].lines[j].key,
00591 file->sections[i].lines[j].value);
00592 }
00593 }
00594 }
00595 <font class="preprocessor">#endif</font>
00596 <font class="preprocessor"></font>
00597 BusDesktopFile*
00598 bus_desktop_file_load (<a class="code" href="structDBusString.html">DBusString</a> *filename,
00599 <a class="code" href="structDBusError.html">DBusError</a> *error)
00600 {
00601 <a class="code" href="structDBusString.html">DBusString</a> str;
00602 <a class="code" href="structBusDesktopFileParser.html">BusDesktopFileParser</a> parser;
00603 <a class="code" href="structDBusStat.html">DBusStat</a> sb;
00604
00605 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
00606
00607 <font class="comment">/* Clearly there's a race here, but it's just to make it unlikely</font>
00608 <font class="comment"> * that we do something silly, we still handle doing it below.</font>
00609 <font class="comment"> */</font>
00610 <font class="keywordflow">if</font> (!_dbus_stat (filename, &sb, error))
00611 <font class="keywordflow">return</font> NULL;
00612
00613 <font class="keywordflow">if</font> (sb.<a class="code" href="structDBusStat.html#m4">size</a> > _DBUS_ONE_KILOBYTE * 128)
00614 {
00615 dbus_set_error (error, DBUS_ERROR_FAILED,
00616 <font class="stringliteral">"Desktop file size (%ld bytes) is too large"</font>, (<font class="keywordtype">long</font>) sb.<a class="code" href="structDBusStat.html#m4">size</a>);
00617 <font class="keywordflow">return</font> NULL;
00618 }
00619
00620 <font class="keywordflow">if</font> (!_dbus_string_init (&str))
00621 <font class="keywordflow">return</font> NULL;
00622
00623 <font class="keywordflow">if</font> (!_dbus_file_get_contents (&str, filename, error))
00624 {
00625 _dbus_string_free (&str);
00626 <font class="keywordflow">return</font> NULL;
00627 }
00628
00629 <font class="keywordflow">if</font> (!_dbus_string_validate_utf8 (&str, 0, _dbus_string_get_length (&str)))
00630 {
00631 _dbus_string_free (&str);
00632 dbus_set_error (error, DBUS_ERROR_FAILED,
00633 <font class="stringliteral">"invalid UTF-8"</font>);
00634 <font class="keywordflow">return</font> NULL;
00635 }
00636
00637 parser.<a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a> = dbus_new0 (BusDesktopFile, 1);
00638 <font class="keywordflow">if</font> (parser.<a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a> == NULL)
00639 {
00640 _dbus_string_free (&str);
00641 BUS_SET_OOM (error);
00642 <font class="keywordflow">return</font> NULL;
00643 }
00644
00645 parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a> = str;
00646 parser.<a class="code" href="structBusDesktopFileParser.html#m5">line_num</a> = 1;
00647 parser.<a class="code" href="structBusDesktopFileParser.html#m3">pos</a> = 0;
00648 parser.<a class="code" href="structBusDesktopFileParser.html#m4">len</a> = _dbus_string_get_length (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>);
00649 parser.<a class="code" href="structBusDesktopFileParser.html#m2">current_section</a> = -1;
00650
00651 <font class="keywordflow">while</font> (parser.<a class="code" href="structBusDesktopFileParser.html#m3">pos</a> < parser.<a class="code" href="structBusDesktopFileParser.html#m4">len</a>)
00652 {
00653 <font class="keywordflow">if</font> (_dbus_string_get_byte (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser.<a class="code" href="structBusDesktopFileParser.html#m3">pos</a>) == <font class="charliteral">'['</font>)
00654 {
00655 <font class="keywordflow">if</font> (!parse_section_start (&parser, error))
00656 {
00657 _dbus_string_free (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>);
00658 <font class="keywordflow">return</font> NULL;
00659 }
00660 }
00661 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (is_blank_line (&parser) ||
00662 _dbus_string_get_byte (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>, parser.<a class="code" href="structBusDesktopFileParser.html#m3">pos</a>) == <font class="charliteral">'#'</font>)
00663 parse_comment_or_blank (&parser);
00664 <font class="keywordflow">else</font>
00665 {
00666 <font class="keywordflow">if</font> (!parse_key_value (&parser, error))
00667 {
00668 _dbus_string_free (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>);
00669 <font class="keywordflow">return</font> NULL;
00670 }
00671 }
00672 }
00673
00674 _dbus_string_free (&parser.<a class="code" href="structBusDesktopFileParser.html#m0">data</a>);
00675
00676 <font class="keywordflow">return</font> parser.<a class="code" href="structBusDesktopFileParser.html#m1">desktop_file</a>;
00677 }
00678
00679 <font class="keyword">static</font> BusDesktopFileSection *
00680 lookup_section (BusDesktopFile *desktop_file,
00681 <font class="keyword">const</font> <font class="keywordtype">char</font> *section_name)
00682 {
00683 BusDesktopFileSection *section;
00684 <font class="keywordtype">int</font> i;
00685
00686 <font class="keywordflow">if</font> (section_name == NULL)
00687 <font class="keywordflow">return</font> NULL;
00688
00689 <font class="keywordflow">for</font> (i = 0; i < desktop_file->n_sections; i ++)
00690 {
00691 section = &desktop_file->sections[i];
00692
00693 <font class="keywordflow">if</font> (strcmp (section->section_name, section_name) == 0)
00694 <font class="keywordflow">return</font> section;
00695 }
00696
00697 <font class="keywordflow">return</font> NULL;
00698 }
00699
00700 <font class="keyword">static</font> BusDesktopFileLine *
00701 lookup_line (BusDesktopFile *desktop_file,
00702 BusDesktopFileSection *section,
00703 <font class="keyword">const</font> <font class="keywordtype">char</font> *keyname)
00704 {
00705 BusDesktopFileLine *line;
00706 <font class="keywordtype">int</font> i;
00707
00708 <font class="keywordflow">for</font> (i = 0; i < section->n_lines; i++)
00709 {
00710 line = &section->lines[i];
00711
00712 <font class="keywordflow">if</font> (strcmp (line->key, keyname) == 0)
00713 <font class="keywordflow">return</font> line;
00714 }
00715
00716 <font class="keywordflow">return</font> NULL;
00717 }
00718
00719 dbus_bool_t
00720 bus_desktop_file_get_raw (BusDesktopFile *desktop_file,
00721 <font class="keyword">const</font> <font class="keywordtype">char</font> *section_name,
00722 <font class="keyword">const</font> <font class="keywordtype">char</font> *keyname,
00723 <font class="keyword">const</font> <font class="keywordtype">char</font> **val)
00724 {
00725 BusDesktopFileSection *section;
00726 BusDesktopFileLine *line;
00727
00728 *val = NULL;
00729
00730 section = lookup_section (desktop_file, section_name);
00731
00732 <font class="keywordflow">if</font> (!section)
00733 <font class="keywordflow">return</font> FALSE;
00734
00735 line = lookup_line (desktop_file,
00736 section,
00737 keyname);
00738
00739 <font class="keywordflow">if</font> (!line)
00740 <font class="keywordflow">return</font> FALSE;
00741
00742 *val = line->value;
00743
00744 <font class="keywordflow">return</font> TRUE;
00745 }
00746
00747 dbus_bool_t
00748 bus_desktop_file_get_string (BusDesktopFile *desktop_file,
00749 <font class="keyword">const</font> <font class="keywordtype">char</font> *section,
00750 <font class="keyword">const</font> <font class="keywordtype">char</font> *keyname,
00751 <font class="keywordtype">char</font> **val)
00752 {
00753 <font class="keyword">const</font> <font class="keywordtype">char</font> *raw;
00754
00755 *val = NULL;
00756
00757 <font class="keywordflow">if</font> (!bus_desktop_file_get_raw (desktop_file, section, keyname, &raw))
00758 <font class="keywordflow">return</font> FALSE;
00759
00760 *val = _dbus_strdup (raw);
00761
00762 <font class="comment">/* FIXME we don't distinguish "key not found" from "out of memory" here,</font>
00763 <font class="comment"> * which is broken.</font>
00764 <font class="comment"> */</font>
00765 <font class="keywordflow">if</font> (*val == NULL)
00766 <font class="keywordflow">return</font> FALSE;
00767
00768 <font class="keywordflow">return</font> TRUE;
00769 }
</pre></div><hr><address align="right"><small>Generated on Mon Sep 29 21:31:02 2003 for D-BUS by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.15 </small></address>
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distrib
>
Mandriva
>
2007.0
>
x86_64
>
media
>
main-release
>
by-pkgid
>
926d2d1e3111287cee1b0a4fad4fb4f6
>
files
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149
