lib/input.cc

   1 /*
   2  input.cc -- implement Input
   3
   4  source file of the LilyPond music typesetter
   5
   6  (c) 1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8 #include <iostream.h>
   9 #include "proto.hh"
  10 #include "input.hh"
  11 #include "string.hh"
  12 #include "source.hh"
  13 #include "source-file.hh"
  14
  15 Input::Input (Source_file*s, char const *cl)
  16 {
  17   source_file_l_=s;
  18   defined_ch_C_=cl;
  19 }
  20
  21 Input::Input ()
  22 {
  23   source_file_l_ = 0;
  24   defined_ch_C_ = 0;
  25 }
  26
  27 Input
  28 Input::spot () const
  29 {
  30   return *this;
  31 }
  32
  33 void
  34 Input::set_spot (Input const &i)
  35 {
  36   *this = i;
  37 }
  38
  39 /*
  40   Produce almost GNU-compliant error message.  Lily used to be rather
  41   GNU-compliant in this too, but correcting mudela is such a breeze if
  42   you('re edidor) know(s) the error column too (there's no GNU standard
  43   on columns, is there?).
  44
  45   Format:
  46
  47     [file:line:column:][warning:]message
  48
  49  */
  50 void
  51 Input::message (String message_str) const
  52 {
  53   String str;
  54
  55   /*
  56     marked "Work in prgress" in GNU iostream
  57       libg++ 2.7.2.8
  58       libstdc++ 2.8.1
  59
  60     why not just return always -1 (unknown),
  61     iso breaking the interface?
  62
  63   int col = cerr.rdbuf ()->column ();
  64
  65    */
  66
  67   // well, we don't want to loose first warning...
  68   int col = 1;
  69   if (col > 0)
  70     str += "\n";
  71
  72   if (source_file_l_)
  73     str += location_str () + String (": ");
  74
  75   str += message_str;
  76   if (source_file_l_)
  77    {
  78     str += ":\n";
  79     str += source_file_l_->error_str (defined_ch_C_);
  80    }
  81   cerr << str << endl;
  82 }
  83
  84 void
  85 Input::warning (String message_str) const
  86 {
  87   message (_ ("warning: ") + message_str);
  88 }
  89 void
  90 Input::error (String s) const
  91 {
  92   message (_ ("error: ")+ s);
  93 }
  94
  95 void
  96 Input::non_fatal_error (String s) const
  97 {
  98   message (_ ("Non fatal error: ") + s);
  99 }
 100 String
 101 Input::location_str () const
 102 {
 103   if (source_file_l_)
 104     return source_file_l_->file_line_column_str (defined_ch_C_);
 105   else
 106     return "(" + _ ("position unknown") + ")";
 107 }
 108
 109 String
 110 Input::line_number_str () const
 111 {
 112   if (source_file_l_)
 113     return to_str (source_file_l_->line_i (defined_ch_C_));
 114   else
 115     return "?";
 116 }