2 source-file.cc -- implement Source_file
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Jan Nieuwenhuizen <janneke@gnu.org>
7 Han-Wen Nienhuys <hanwen@cs.uu.nl>
17 #include <strstream.h>
18 #define istringstream(x) istrstream(x, length ())
22 #include "flower-proto.hh"
24 #include "source-file.hh"
28 Source_file::load_stdin ()
33 Array<char> chs; // ugh.
34 while ((c = fgetc (stdin)) != EOF)
37 length_ = chs.size ();
38 contents_str0_ = chs.remove_array ();
44 gulp_file (String fn, int* len)
47 let's hope that "b" opens anything binary, and does not apply
50 FILE * f = fopen (fn.to_str0 (), "rb");
54 warning (_f ("can't open file: `%s'", fn.to_str0 ()));
58 int ret = fseek (f, 0, SEEK_END);
62 char * str = new char[*len+1];
64 ret = fread (str, sizeof (char), *len, f);
67 warning (_f ("Huh? Got %d, expected %d characters", ret, *len));
78 Source_file::Source_file (String filename, String data)
80 name_string_ = filename;
82 contents_str0_ = data.get_copy_str0();
83 length_ = data.length();
84 pos_str0_ = to_str0 ();
88 Source_file::Source_file (String filename_string)
90 name_string_ = filename_string;
94 if (filename_string == "-")
97 contents_str0_ = gulp_file (filename_string, &length_);
99 pos_str0_ = to_str0 ();
103 for (int i = 0; i < length_; i++)
104 if (contents_str0_[i] == '\n')
105 newline_locations_.push (contents_str0_ + i);
109 Source_file::init_port ()
111 SCM str =scm_makfrom0str (contents_str0_);
113 str_port_ = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
115 scm_set_port_filename_x (str_port_,
116 scm_makfrom0str (name_string_.get_str0()));
120 Source_file::tell () const
122 return pos_str0_ - contents_str0_;
126 Source_file::get_istream ()
130 if (length ()) // can-t this be done without such a hack?
131 istream_ = new std::istringstream (to_str0 ());
134 istream_ = new std::istringstream ("");
135 istream_->setstate (std::ios::eofbit);
136 // istream_->set (ios::eofbit);
143 Source_file::file_line_column_string (char const *context_str0) const
146 return " (" + _ ("position unknown") + ")";
148 return name_string () + ":" + to_string (get_line (context_str0))
149 + ":" + to_string (get_char (context_str0));
153 Source_file::name_string () const
158 Source_file::~Source_file ()
162 delete[] contents_str0_;
166 Source_file::line_slice (char const* pos_str0) const
168 if (!in_b (pos_str0))
171 char const* data_str0 = to_str0 ();
172 char const * eof_C_ = data_str0 + length ();
174 if (pos_str0 == eof_C_)
176 char const* begin_str0 = pos_str0;
177 while (begin_str0 > data_str0)
178 if (*--begin_str0 == '\n')
184 char const* end_str0 = pos_str0;
185 while (end_str0 < eof_C_)
186 if (*end_str0++ == '\n')
192 return Slice (begin_str0 - data_str0, end_str0 - data_str0);
196 Source_file::line_string (char const* pos_str0) const
198 if (!in_b (pos_str0))
201 Slice line = line_slice (pos_str0);
202 char const* data_str0 = to_str0 ();
203 return String ((Byte const*)data_str0 + line[LEFT], line.length ());
207 Source_file::get_char (char const* pos_str0) const
209 if (!in_b (pos_str0))
212 char const* data_str0 = to_str0 ();
213 return pos_str0 - (line_slice (pos_str0)[SMALLER] + data_str0);
217 Source_file::get_column (char const* pos_str0) const
219 if (!in_b (pos_str0))
222 int ch_i = get_char (pos_str0);
223 String line = line_string (pos_str0);
226 for (int i = 0; i < ch_i; i++)
228 col_i = (col_i / 8 + 1) * 8;
236 Source_file::error_string (char const* pos_str0) const
238 if (!in_b (pos_str0))
239 return " (" + _ ("position unknown") + ")";
241 int ch_i = get_char (pos_str0);
242 String line = line_string (pos_str0);
243 String context = line.left_string (ch_i)
245 + to_string (' ', get_column (pos_str0))
246 + line.cut_string (ch_i, INT_MAX);
252 Source_file::in_b (char const* pos_str0) const
254 return (pos_str0 && (pos_str0 >= to_str0 ()) && (pos_str0 <= to_str0 () + length ()));
258 Source_file::get_line (char const* pos_str0) const
260 if (!in_b (pos_str0))
263 if (!newline_locations_.size())
267 int hi = newline_locations_.size();
269 if (newline_locations_[lo] > pos_str0)
272 if (newline_locations_[hi-1] < pos_str0)
275 binary_search_bounds (newline_locations_,
277 Link_array<char>::default_compare,
280 if (*pos_str0 == '\n')
286 Source_file::length () const
292 Source_file::to_str0 () const
294 return contents_str0_;
298 Source_file::set_pos (char const * pos_str0)
301 pos_str0_ = pos_str0;
303 error (error_string (pos_str0) + "invalid pos");
307 Source_file::seek_str0 (int n)
309 char const* new_str0 = to_str0 () + n;
311 new_str0 += length ();
313 pos_str0_ = new_str0;
315 error (error_string (new_str0) + "seek past eof");
321 Source_file::forward_str0 (int n)
323 char const* old_pos = pos_str0_;
324 char const* new_str0 = pos_str0_ + n;
326 pos_str0_ = new_str0;
328 error (error_string (new_str0) + "forward past eof");
334 Source_file::get_string (int n)
336 String str = String ((Byte const*)forward_str0 (n), n);