2 source-file.cc -- implement Source_file
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "source-file.hh"
19 #define istringstream(x) istrstream (x, length ())
23 #include "file-name-map.hh"
26 Source_file::load_stdin ()
31 Array<char> chs; // ugh.
32 while ((c = fgetc (stdin)) != EOF)
36 length_ = chs.size ();
37 contents_str0_ = chs.remove_array ();
41 gulp_file (String filename, int *filesize)
43 /* "b" must ensure to open literally, avoiding text (CR/LF)
45 FILE *f = fopen (filename.to_str0 (), "rb");
48 warning (_f ("can't open file: `%s'", filename.to_str0 ()));
52 fseek (f, 0, SEEK_END);
53 *filesize = ftell (f);
56 char *str = new char[*filesize + 1];
59 int bytes_read = fread (str, sizeof (char), *filesize, f);
60 if (bytes_read != *filesize)
61 warning (_f ("Huh? Got %d, expected %d characters", bytes_read,
68 Source_file::Source_file (String filename, String data)
72 contents_str0_ = data.get_copy_str0 ();
73 length_ = data.length ();
74 pos_str0_ = to_str0 ();
77 for (int i = 0; i < length_; i++)
78 if (contents_str0_[i] == '\n')
79 newline_locations_.push (contents_str0_ + i);
82 Source_file::Source_file (String filename_string)
84 name_ = filename_string;
88 if (filename_string == "-")
91 contents_str0_ = gulp_file (filename_string, &length_);
93 pos_str0_ = to_str0 ();
97 for (int i = 0; i < length_; i++)
98 if (contents_str0_[i] == '\n')
99 newline_locations_.push (contents_str0_ + i);
103 Source_file::init_port ()
105 SCM str = scm_makfrom0str (contents_str0_);
106 str_port_ = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG, __FUNCTION__);
107 scm_set_port_filename_x (str_port_, scm_makfrom0str (name_.get_str0 ()));
111 Source_file::tell () const
113 return pos_str0_ - contents_str0_;
117 Source_file::get_istream ()
121 if (length ()) // can-t this be done without such a hack?
122 istream_ = new std::istringstream (to_str0 ());
125 istream_ = new std::istringstream ("");
126 istream_->setstate (std::ios::eofbit);
127 // istream_->set (ios::eofbit);
134 Source_file::file_line_column_string (char const *context_str0) const
137 return " (" + _ ("position unknown") + ")";
139 return name_string () + ":" + to_string (get_line (context_str0))
140 + ":" + to_string (get_char (context_str0));
144 Source_file::name_string () const
146 return map_file_name (name_);
149 Source_file::~Source_file ()
153 delete[] contents_str0_;
157 Source_file::line_slice (char const *pos_str0) const
159 if (!contains (pos_str0))
162 char const *data_str0 = to_str0 ();
163 char const *eof_C_ = data_str0 + length ();
165 if (pos_str0 == eof_C_)
167 char const *begin_str0 = pos_str0;
168 while (begin_str0 > data_str0)
169 if (*--begin_str0 == '\n')
175 char const* end_str0 = pos_str0;
176 while (end_str0 < eof_C_)
177 if (*end_str0++ == '\n')
183 return Slice (begin_str0 - data_str0, end_str0 - data_str0);
187 Source_file::line_string (char const* pos_str0) const
189 if (!contains (pos_str0))
192 Slice line = line_slice (pos_str0);
193 char const *data_str0 = to_str0 ();
194 return String ((Byte const *)data_str0 + line[LEFT], line.length ());
198 Source_file::get_char (char const *pos_str0) const
200 if (!contains (pos_str0))
203 char const *data_str0 = to_str0 ();
204 return pos_str0 - (line_slice (pos_str0)[SMALLER] + data_str0);
208 Source_file::get_column (char const *pos_str0) const
210 if (!contains (pos_str0))
213 int ch_i = get_char (pos_str0);
214 String line = line_string (pos_str0);
217 for (int i = 0; i < ch_i; i++)
219 col_i = (col_i / 8 + 1) * 8;
227 Source_file::error_string (char const* pos_str0) const
229 if (!contains (pos_str0))
230 return " (" + _ ("position unknown") + ")";
232 int ch_i = get_char (pos_str0);
233 String line = line_string (pos_str0);
234 String context = line.left_string (ch_i)
236 + to_string (' ', get_column (pos_str0))
237 + line.cut_string (ch_i, INT_MAX);
243 Source_file::contains (char const* pos_str0) const
245 return (pos_str0 && (pos_str0 >= to_str0 ()) && (pos_str0 <= to_str0 () + length ()));
249 Source_file::get_line (char const* pos_str0) const
251 if (!contains (pos_str0))
254 if (!newline_locations_.size ())
258 int hi = newline_locations_.size ();
260 if (newline_locations_[lo] > pos_str0)
263 if (newline_locations_[hi-1] < pos_str0)
266 binary_search_bounds (newline_locations_,
268 Link_array<char>::default_compare,
271 if (*pos_str0 == '\n')
277 Source_file::length () const
283 Source_file::to_str0 () const
285 return contents_str0_;
289 Source_file::set_pos (char const * pos_str0)
291 if (contains (pos_str0))
292 pos_str0_ = pos_str0;
294 error (error_string (pos_str0) + "invalid pos");
298 Source_file::seek_str0 (int n)
300 char const *new_str0 = to_str0 () + n;
302 new_str0 += length ();
303 if (contains (new_str0))
304 pos_str0_ = new_str0;
306 error (error_string (new_str0) + "seek past eof");
312 Source_file::forward_str0 (int n)
314 char const *old_pos = pos_str0_;
315 char const *new_str0 = pos_str0_ + n;
316 if (contains (new_str0))
317 pos_str0_ = new_str0;
319 error (error_string (new_str0) + "forward past eof");
325 Source_file::get_string (int n)
327 String str = String ((Byte const *)forward_str0 (n), n);