2 source-file.cc -- implement Source_file
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 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));
77 Source_file::Source_file (String filename, String data)
81 contents_str0_ = data.get_copy_str0();
82 length_ = data.length();
83 pos_str0_ = to_str0 ();
90 Source_file::Source_file (String filename_string)
92 name_string_ = filename_string;
96 if (filename_string == "-")
99 contents_str0_ = gulp_file (filename_string, &length_);
101 pos_str0_ = to_str0 ();
105 for (int i = 0; i < length_; i++)
106 if (contents_str0_[i] == '\n')
107 newline_locations_.push (contents_str0_ + i);
111 Source_file::init_port ()
113 SCM str =scm_makfrom0str (contents_str0_);
115 str_port_ = scm_mkstrport (SCM_INUM0, str, SCM_OPN | SCM_RDNG,
117 scm_set_port_filename_x (str_port_,
118 scm_makfrom0str (name_string_.get_str0()));
122 Source_file::tell () const
124 return pos_str0_ - contents_str0_;
128 Source_file::get_istream ()
132 if (length ()) // can-t this be done without such a hack?
133 istream_ = new std::istringstream (to_str0 ());
136 istream_ = new std::istringstream ("");
137 istream_->setstate (std::ios::eofbit);
138 // istream_->set (ios::eofbit);
145 Source_file::file_line_column_string (char const *context_str0) const
148 return " (" + _ ("position unknown") + ")";
150 return name_string () + ":" + to_string (get_line (context_str0))
151 + ":" + to_string (get_char (context_str0));
155 Source_file::name_string () const
160 Source_file::~Source_file ()
164 delete[] contents_str0_;
168 Source_file::line_slice (char const* pos_str0) const
170 if (!in_b (pos_str0))
173 char const* data_str0 = to_str0 ();
174 char const * eof_C_ = data_str0 + length ();
176 if (pos_str0 == eof_C_)
178 char const* begin_str0 = pos_str0;
179 while (begin_str0 > data_str0)
180 if (*--begin_str0 == '\n')
186 char const* end_str0 = pos_str0;
187 while (end_str0 < eof_C_)
188 if (*end_str0++ == '\n')
194 return Slice (begin_str0 - data_str0, end_str0 - data_str0);
198 Source_file::line_string (char const* pos_str0) const
200 if (!in_b (pos_str0))
203 Slice line = line_slice (pos_str0);
204 char const* data_str0 = to_str0 ();
205 return String ((Byte const*)data_str0 + line[LEFT], line.length ());
209 Source_file::get_char (char const* pos_str0) const
211 if (!in_b (pos_str0))
214 char const* data_str0 = to_str0 ();
215 return pos_str0 - (line_slice (pos_str0)[SMALLER] + data_str0);
219 Source_file::get_column (char const* pos_str0) const
221 if (!in_b (pos_str0))
224 int ch_i = get_char (pos_str0);
225 String line = line_string (pos_str0);
228 for (int i = 0; i < ch_i; i++)
230 col_i = (col_i / 8 + 1) * 8;
238 Source_file::error_string (char const* pos_str0) const
240 if (!in_b (pos_str0))
241 return " (" + _ ("position unknown") + ")";
243 int ch_i = get_char (pos_str0);
244 String line = line_string (pos_str0);
245 String context = line.left_string (ch_i)
247 + to_string (' ', get_column (pos_str0))
248 + line.cut_string (ch_i, INT_MAX);
254 Source_file::in_b (char const* pos_str0) const
256 return (pos_str0 && (pos_str0 >= to_str0 ()) && (pos_str0 <= to_str0 () + length ()));
260 Source_file::get_line (char const* pos_str0) const
262 if (!in_b (pos_str0))
266 int hi = newline_locations_.size();
268 binary_search_bounds (newline_locations_,
270 Link_array<char>::default_compare,
277 Source_file::length () const
283 Source_file::to_str0 () const
285 return contents_str0_;
289 Source_file::set_pos (char const * 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 ();
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;
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);