lily/all-font-metrics.cc

   1 /*
   2   all-font-metrics.cc --  implement All_font_metrics
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "config.h"
  11 #include "main.hh"
  12 #include "all-font-metrics.hh"
  13 #include "debug.hh"
  14 #include "warn.hh"
  15 #include "afm.hh"
  16 #include "tfm.hh"
  17 #include "lily-guile.hh"
  18 #include "scm-hash.hh"
  19 #include "kpath.hh"
  20
  21 static const char * default_font_sz_ = "cmr10";
  22
  23 All_font_metrics::All_font_metrics (String path)
  24 {
  25   afm_p_dict_ = new Scheme_hash_table;
  26   tfm_p_dict_ = new Scheme_hash_table;
  27
  28   search_path_.parse_path (path);
  29 }
  30
  31 All_font_metrics::~All_font_metrics ()
  32 {
  33   scm_gc_unprotect_object (afm_p_dict_->self_scm ());
  34   scm_gc_unprotect_object (tfm_p_dict_->self_scm ());
  35 }
  36
  37 Adobe_font_metric *
  38 All_font_metrics::find_afm (String name)
  39 {
  40   SCM sname = ly_symbol2scm (name.ch_C ());
  41
  42   SCM name_str = ly_str02scm (name.ch_C ());
  43
  44   SCM val;
  45
  46   if (!afm_p_dict_->try_retrieve (sname, &val))
  47     {
  48       String path;
  49
  50       if (path.empty_b ())
  51         path = search_path_.find (name  + ".afm");
  52
  53       if (path.empty_b ())
  54         {
  55           String p = ly_find_afm (name.ch_C ());
  56           if (p.length_i ())
  57             path = p;
  58         }
  59
  60       if (path.empty_b ())
  61         return 0;
  62
  63       if (verbose_global_b)
  64         progress_indication ("[" + path);
  65       val = read_afm_file (path);
  66       unsmob_metrics (val)->path_ = path;
  67
  68       unsmob_metrics (val)->description_ = gh_cons (name_str, gh_double2scm (1.0));
  69
  70       if (verbose_global_b)
  71         progress_indication ("]");
  72
  73       afm_p_dict_->set (sname,val);
  74
  75       scm_gc_unprotect_object (val);
  76
  77
  78       Adobe_font_metric *afm
  79         = dynamic_cast<Adobe_font_metric*> (unsmob_metrics (val));
  80
  81       /*
  82         only check checksums if there is one.  We take the risk that
  83         some file has valid checksum 0
  84       */
  85       if (afm->checksum_)
  86         {
  87
  88           Tex_font_metric * tfm = find_tfm (name);
  89
  90           /* FIXME: better warning message
  91              (maybe check upon startup for feta16.afm, feta16.tfm?)
  92           */
  93           if (tfm && tfm->info_.checksum != afm->checksum_)
  94             {
  95               String s = _f ("checksum mismatch for font file: `%s'",
  96                              path.ch_C ());
  97               s += " " + _f ("does not match: `%s'", tfm->path_.ch_C ()); // FIXME
  98               s += "\n";
  99               s += " TFM: " + to_str ((int) tfm->info_.checksum);
 100               s += " AFM: " + to_str ((int) afm->checksum_);
 101               s += "\n";
 102               s += _ (" Rebuild all .afm files, and remove all .pk and .tfm files.  Rerun with -V to show font paths.");
 103
 104               error (s);
 105             }
 106         }
 107     }
 108
 109   return dynamic_cast<Adobe_font_metric*> (unsmob_metrics (val));
 110 }
 111
 112
 113 Tex_font_metric *
 114 All_font_metrics::find_tfm (String name)
 115 {
 116   SCM sname = ly_symbol2scm (name.ch_C ());
 117   SCM name_str = ly_str02scm (name.ch_C ());
 118
 119   SCM val;
 120   if (!tfm_p_dict_->try_retrieve (sname, &val))
 121     {
 122       String path;
 123
 124       if (path.empty_b ())
 125         {
 126           String p = ly_find_tfm (name.ch_C ());
 127           if (p.length_i ())
 128             path = p;
 129         }
 130
 131       if (path.empty_b ())
 132         path = search_path_.find (name  + ".tfm");
 133       if (path.empty_b ())
 134         return 0;
 135
 136
 137       if (verbose_global_b)
 138         progress_indication ("[" + path);
 139       val = Tex_font_metric::make_tfm (path);
 140
 141       if (verbose_global_b)
 142         progress_indication ("]");
 143
 144       unsmob_metrics (val)->path_ = path;
 145       unsmob_metrics (val)->description_ = gh_cons (name_str, gh_double2scm (1.0));
 146       tfm_p_dict_->set (sname, val);
 147
 148       scm_gc_unprotect_object (val);
 149     }
 150
 151   return
 152     dynamic_cast<Tex_font_metric*> (unsmob_metrics (val));
 153 }
 154
 155
 156 Font_metric *
 157 All_font_metrics::find_font (String name)
 158 {
 159   Font_metric * f= find_afm (name);
 160   if (f)
 161     return f;
 162
 163   f = find_tfm (name);
 164   if (f)
 165     return f;
 166
 167   warning (_f ("can't find font: `%s'", name.ch_C ()));
 168   warning (_ ("Loading default font"));
 169
 170   String def_name = default_font_sz_;
 171
 172   /*
 173     we're in emergency recovery mode here anyway, so don't try to do
 174     anything smart that runs the risk of failing.  */
 175   f= find_afm (def_name);
 176   if (f)
 177     return f;
 178
 179   f =  find_tfm (def_name);
 180   if (f)
 181     return f;
 182
 183   error (_f ("can't find default font: `%s'", def_name.ch_C ()));
 184   error (_f ("(search path: `%s')", search_path_.str ()));
 185   error (_ ("Giving up"));
 186
 187   return 0;
 188 }
 189
 190