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"
15 #include <utf8/wchar.h> /* mbrtowc */
17 #include <wchar.h> /* mbrtowc */
26 #define istringstream(x) istrstream (x, length ())
30 #include "file-name-map.hh"
33 Source_file::load_stdin ()
38 Array
<char> chs
; // ugh.
39 while ((c
= fgetc (stdin
)) != EOF
)
43 length_
= chs
.size ();
44 contents_str0_
= chs
.remove_array ();
48 gulp_file (String filename
, int *filesize
)
50 /* "b" must ensure to open literally, avoiding text (CR/LF)
52 FILE *f
= fopen (filename
.to_str0 (), "rb");
55 warning (_f ("can't open file: `%s'", filename
.to_str0 ()));
59 fseek (f
, 0, SEEK_END
);
60 *filesize
= ftell (f
);
63 char *str
= new char[*filesize
+ 1];
66 int bytes_read
= fread (str
, sizeof (char), *filesize
, f
);
67 if (bytes_read
!= *filesize
)
68 warning (_f ("expected to read %d characters, got %d", bytes_read
,
75 Source_file::Source_file (String filename
, String data
)
79 contents_str0_
= data
.get_copy_str0 ();
80 length_
= data
.length ();
81 pos_str0_
= to_str0 ();
84 for (int i
= 0; i
< length_
; i
++)
85 if (contents_str0_
[i
] == '\n')
86 newline_locations_
.push (contents_str0_
+ i
);
89 Source_file::Source_file (String filename_string
)
91 name_
= filename_string
;
95 if (filename_string
== "-")
98 contents_str0_
= gulp_file (filename_string
, &length_
);
100 pos_str0_
= to_str0 ();
104 for (int i
= 0; i
< length_
; i
++)
105 if (contents_str0_
[i
] == '\n')
106 newline_locations_
.push (contents_str0_
+ i
);
110 Source_file::init_port ()
112 SCM str
= scm_makfrom0str (contents_str0_
);
113 str_port_
= scm_mkstrport (SCM_INUM0
, str
, SCM_OPN
| SCM_RDNG
, __FUNCTION__
);
114 scm_set_port_filename_x (str_port_
, scm_makfrom0str (name_
.get_str0 ()));
118 Source_file::tell () const
120 return pos_str0_
- contents_str0_
;
124 Source_file::get_istream ()
128 if (length ()) // can-t this be done without such a hack?
129 istream_
= new std::istringstream (to_str0 ());
132 istream_
= new std::istringstream ("");
133 istream_
->setstate (std::ios::eofbit
);
134 // istream_->set (ios::eofbit);
141 Source_file::file_line_column_string (char const *context_str0
) const
144 return " (" + _ ("position unknown") + ")";
148 get_counts (context_str0
, &l
, &ch
, &col
);
150 return name_string () + ":" + to_string (l
)
151 + ":" + to_string (col
);
158 Source_file::quote_input (char const* pos_str0
) const
160 if (!contains (pos_str0
))
161 return " (" + _ ("position unknown") + ")";
164 get_counts (pos_str0
, &l
, &ch
, &col
);
165 String line
= line_string (pos_str0
);
166 String context
= line
.left_string (ch
)
168 + to_string (' ', col
)
169 + line
.cut_string (ch
, INT_MAX
);
174 Source_file::name_string () const
176 return map_file_name (name_
);
179 Source_file::~Source_file ()
183 delete[] contents_str0_
;
187 Source_file::line_slice (char const *pos_str0
) const
189 if (!contains (pos_str0
))
192 char const *data_str0
= to_str0 ();
193 char const *eof_C_
= data_str0
+ length ();
195 if (pos_str0
== eof_C_
)
197 char const *begin_str0
= pos_str0
;
198 while (begin_str0
> data_str0
)
199 if (*--begin_str0
== '\n')
205 char const* end_str0
= pos_str0
;
206 while (end_str0
< eof_C_
)
207 if (*end_str0
++ == '\n')
213 return Slice (begin_str0
- data_str0
, end_str0
- data_str0
);
217 Source_file::line_string (char const* pos_str0
) const
219 if (!contains (pos_str0
))
222 Slice line
= line_slice (pos_str0
);
223 char const *data_str0
= to_str0 ();
224 return String ((Byte
const *)data_str0
+ line
[LEFT
], line
.length ());
229 Source_file::get_counts (char const *pos_str0
,
234 if (!contains (pos_str0
))
237 *line_number
= get_line (pos_str0
);
239 Slice line
= line_slice (pos_str0
);
240 char const *data
= to_str0 ();
241 Byte
const *line_start
= (Byte
const *)data
+ line
[LEFT
];
243 int left
= (Byte
const*) pos_str0
- line_start
;
244 String
line_begin (line_start
, left
);
245 char const *line_chars
= line_begin
.to_str0();
252 /* Initialize the state. */
253 memset (&state
, '\0', sizeof (state
));
257 wchar_t multibyte
[2];
260 FIXME, this is apparently locale dependent.
262 size_t thislen
= mbrtowc (multibyte
, line_chars
, left
, &state
);
264 /* Stop converting at invalid character;
265 this can mean we have read just the first part
266 of a valid character. */
267 if (thislen
== (size_t) -1)
270 /* We want to handle embedded NUL bytes
271 but the return value is 0. Correct this. */
275 if (thislen
== 1 && line_chars
[0] == '\t')
276 (*column
) = (*column
/ 8 + 1) * 8;
281 /* Advance past this character. */
282 line_chars
+= thislen
;
288 Source_file::contains (char const* pos_str0
) const
290 return (pos_str0
&& (pos_str0
>= to_str0 ()) && (pos_str0
<= to_str0 () + length ()));
294 Source_file::get_line (char const* pos_str0
) const
296 if (!contains (pos_str0
))
299 if (!newline_locations_
.size ())
303 int hi
= newline_locations_
.size ();
305 if (newline_locations_
[lo
] > pos_str0
)
308 if (newline_locations_
[hi
-1] < pos_str0
)
311 binary_search_bounds (newline_locations_
,
313 Link_array
<char>::default_compare
,
316 if (*pos_str0
== '\n')
322 Source_file::length () const
328 Source_file::to_str0 () const
330 return contents_str0_
;
334 Source_file::set_pos (char const * pos_str0
)
336 if (contains (pos_str0
))
337 pos_str0_
= pos_str0
;
339 error (quote_input (pos_str0
) + "invalid pos");
343 Source_file::seek_str0 (int n
)
345 char const *new_str0
= to_str0 () + n
;
347 new_str0
+= length ();
348 if (contains (new_str0
))
349 pos_str0_
= new_str0
;
351 error (quote_input (new_str0
) + "seek past eof");
357 Source_file::forward_str0 (int n
)
359 char const *old_pos
= pos_str0_
;
360 char const *new_str0
= pos_str0_
+ n
;
361 if (contains (new_str0
))
362 pos_str0_
= new_str0
;
364 error (quote_input (new_str0
) + "forward past eof");
370 Source_file::get_string (int n
)
372 String str
= String ((Byte
const *)forward_str0 (n
), n
);
377 Source_file::get_port () const