2 source-file.cc -- implement Source_file
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1998 Jan Nieuwenhuizen <jan@digicash.com>
7 & Han-Wen Nienhuys <hanwen@stack.nl>
12 #include <strstream.h>
18 #include "windhoos-suck-suck-suck-thank-you-cygnus.hh"
19 #include "source-file.hh"
20 #include "simple-file-storage.hh"
22 Source_file::Source_file (String filename_str)
24 name_str_ = filename_str;
26 storage_p_ = new Simple_file_storage (filename_str);
30 Source_file::istream_l ()
33 if (!name_str_.length_i ())
39 if (length_i ()) // can-t this be done without such a hack?
40 istream_p_ = new istrstream (ch_C (), length_i ());
43 istream_p_ = new istrstream ("", 0);
44 istream_p_->set (ios::eofbit);
51 Source_file::file_line_no_str (char const *context_ch_C) const
54 return _ ("(unknown)");
56 return name_str () + ": "
57 + String (line_i (context_ch_C));
61 Source_file::name_str () const
66 Source_file::~Source_file ()
74 Source_file::error_str (char const* pos_ch_C) const
76 char const* data_ch_C = ch_C ();
77 char const * eof_C_ = data_ch_C + length_i ();
79 return _ ("(position unknown)");
82 if (pos_ch_C == eof_C_)
84 char const* begin_ch_C = pos_ch_C;
85 while (begin_ch_C > data_ch_C)
86 if (*--begin_ch_C == '\n')
92 char const* end_ch_C = pos_ch_C;
93 while (end_ch_C < eof_C_)
94 if (*end_ch_C++ == '\n')
100 // String (char const* p, int length) is missing!?
101 String line_str ((Byte const*)begin_ch_C, end_ch_C - begin_ch_C);
104 char const* scan_ch_C = begin_ch_C;
105 while (scan_ch_C < pos_ch_C)
106 if (*scan_ch_C++ == '\t')
107 error_col_i = (error_col_i / 8 + 1) * 8;
111 String str = line_str.left_str (pos_ch_C - begin_ch_C)
113 + String (' ', error_col_i)
114 + line_str.cut (pos_ch_C - begin_ch_C, INT_MAX); // String::mid should take 0 arg..
119 Source_file::in_b (char const* pos_ch_C) const
121 return (pos_ch_C && (pos_ch_C >= ch_C ()) && (pos_ch_C <= ch_C () + length_i ()));
126 Source_file::line_i (char const* pos_ch_C) const
128 if (!in_b (pos_ch_C))
132 char const* scan_ch_C = ch_C ();
136 while (scan_ch_C < pos_ch_C)
137 if (*scan_ch_C++ == '\n')
143 Source_file::length_i () const
145 return storage_p_->length_i ();
149 Source_file::ch_C () const
151 return storage_p_->ch_C ();