2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2010 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "includable-lexer.hh"
27 #include "file-name.hh"
28 #include "file-path.hh"
29 #include "international.hh"
31 #include "source-file.hh"
36 #define YY_BUF_SIZE 16384
42 #define YYSTATE YY_START
45 /* Flex >= 2.5.29 has include stack; but we don't use that yet. */
46 #if !HAVE_FLEXLEXER_YY_CURRENT_BUFFER
47 #define yy_current_buffer \
48 (yy_buffer_stack != 0 ? yy_buffer_stack[yy_buffer_stack_top] : 0)
51 extern bool relative_includes;
53 Includable_lexer::Includable_lexer ()
55 #if HAVE_FLEXLEXER_YY_CURRENT_BUFFER
56 yy_current_buffer = 0;
60 /** Set the new input file to NAME, remember old file. */
62 Includable_lexer::new_input (string name, Sources *sources)
64 string current_dir = dir_name (main_input_name_);
65 if (relative_includes)
66 current_dir = include_stack_.size () ? dir_name (include_stack_.back ()->name_string ()) : "";
68 Source_file *file = sources->get_file (name, current_dir);
71 string msg = _f ("cannot find file: `%s'", name);
73 msg += _f ("(search path: `%s')",
74 (current_dir.length () ? (current_dir + PATHSEP) : "") + sources->path_->to_string ().c_str ());
75 LexerError (msg.c_str ());
78 file_name_strings_.push_back (file->name_string ());
80 char_count_stack_.push_back (0);
81 if (yy_current_buffer)
82 state_stack_.push_back (yy_current_buffer);
84 if (be_verbose_global)
87 for (size_t i = 0; i < state_stack_.size (); i++)
89 progress_indication (string ("\n") + spaces + string ("[") + file->name_string ());
92 include_stack_.push_back (file);
94 /* Ugh. We'd want to create a buffer from the bytes directly.
96 Whoops. The size argument to yy_create_buffer is not the
97 filelength but a BUFFERSIZE. Maybe this is why reading stdin fucks up. */
98 yy_switch_to_buffer (yy_create_buffer (file->get_istream (), YY_BUF_SIZE));
102 Includable_lexer::new_input (string name, string data, Sources *sources)
104 Source_file *file = new Source_file (name, data);
106 file_name_strings_.push_back (name);
108 char_count_stack_.push_back (0);
109 if (yy_current_buffer)
110 state_stack_.push_back (yy_current_buffer);
112 if (be_verbose_global)
115 for (size_t i = 0; i < state_stack_.size (); i++)
117 progress_indication (string ("\n") + spaces + string ("[") + name);
119 include_stack_.push_back (file);
121 yy_switch_to_buffer (yy_create_buffer (file->get_istream (), YY_BUF_SIZE));
125 Includable_lexer::add_string_include (string data)
127 pending_string_includes_.push_back (data);
130 /** pop the inputstack. conceptually this is a destructor, but it
131 does not destruct the Source_file that Includable_lexer::new_input
134 Includable_lexer::close_input ()
136 include_stack_.pop_back ();
137 char_count_stack_.pop_back ();
138 if (be_verbose_global)
139 progress_indication ("]");
140 yy_delete_buffer (yy_current_buffer);
141 #if HAVE_FLEXLEXER_YY_CURRENT_BUFFER
142 yy_current_buffer = 0;
144 if (state_stack_.empty ())
146 #if HAVE_FLEXLEXER_YY_CURRENT_BUFFER
147 yy_current_buffer = 0;
151 yy_switch_to_buffer (state_stack_.back ());
152 state_stack_.pop_back ();
157 Includable_lexer::here_str0 () const
159 if (include_stack_.empty ())
161 return include_stack_.back ()->c_str () + char_count_stack_.back ();
164 Includable_lexer::~Includable_lexer ()
166 while (!include_stack_.empty ())
171 Includable_lexer::get_source_file () const
173 if (include_stack_.empty ())
175 return include_stack_.back ();