lily/all-font-metrics.cc

   1 /*
   2
   3   all-font-metrics.cc --  implement All_font_metrics
   4
   5   source file of the GNU LilyPond music typesetter
   6
   7   (c) 1999--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   8
   9  */
  10
  11 #include "config.h"
  12 #include "main.hh"
  13 #include "all-font-metrics.hh"
  14
  15 #include "warn.hh"
  16 #include "afm.hh"
  17 #include "tfm.hh"
  18 #include "lily-guile.hh"
  19 #include "scm-hash.hh"
  20 #include "kpath.hh"
  21
  22 static const char * default_font_str0_ = "cmr10";
  23
  24 All_font_metrics::All_font_metrics (String path)
  25 {
  26   afm_p_dict_ = new Scheme_hash_table;
  27   tfm_p_dict_ = new Scheme_hash_table;
  28
  29   search_path_.parse_path (path);
  30 }
  31
  32 All_font_metrics::~All_font_metrics ()
  33 {
  34   scm_gc_unprotect_object (afm_p_dict_->self_scm ());
  35   scm_gc_unprotect_object (tfm_p_dict_->self_scm ());
  36 }
  37
  38 /*
  39   TODO: our AFM handling is broken: the units in an AFM file are
  40   relative to the design size (1000 units = 1 designsize). Hence we
  41   should include design size when generating an AFM metric.
  42  */
  43 Adobe_font_metric *
  44 All_font_metrics::find_afm (String name)
  45 {
  46   SCM sname = ly_symbol2scm (name.to_str0 ());
  47
  48   SCM name_string = scm_makfrom0str (name.to_str0 ());
  49
  50   SCM val;
  51
  52   if (!afm_p_dict_->try_retrieve (sname, &val))
  53     {
  54       String path;
  55
  56       if (path.empty_b ())
  57         path = search_path_.find (name  + ".afm");
  58
  59       if (path.empty_b ())
  60         {
  61           String p = kpathsea_find_afm (name.to_str0 ());
  62           if (p.length ())
  63             path = p;
  64         }
  65
  66       if (path.empty_b ())
  67         return 0;
  68
  69       if (verbose_global_b)
  70         progress_indication ("[" + path);
  71       val = read_afm_file (path);
  72       unsmob_metrics (val)->path_ = path;
  73
  74       unsmob_metrics (val)->description_ = gh_cons (name_string, gh_double2scm (1.0));
  75
  76       if (verbose_global_b)
  77         progress_indication ("]");
  78
  79       afm_p_dict_->set (sname,val);
  80
  81       scm_gc_unprotect_object (val);
  82
  83
  84       Adobe_font_metric *afm
  85         = dynamic_cast<Adobe_font_metric*> (unsmob_metrics (val));
  86
  87       /*
  88         only check checksums if there is one.  We take the risk that
  89         some file has valid checksum 0
  90       */
  91       if (afm->checksum_)
  92         {
  93           Tex_font_metric * tfm = find_tfm (name);
  94
  95           /* FIXME: better warning message
  96              (maybe check upon startup for feta16.afm, feta16.tfm?)
  97           */
  98           if (tfm && tfm->info_.checksum != afm->checksum_)
  99             {
 100               String s = _f ("checksum mismatch for font file: `%s'",
 101                              path.to_str0 ());
 102               s += " " + _f ("does not match: `%s'", tfm->path_.to_str0 ()); // FIXME
 103               s += "\n";
 104               s += " TFM: " + to_string ((int) tfm->info_.checksum);
 105               s += " AFM: " + to_string ((int) afm->checksum_);
 106               s += "\n";
 107               s += _ (" Rebuild all .afm files, and remove all .pk and .tfm files.\nRerun with -V to show font paths.\n");
 108               s += _("A script for removing font-files is delivered with the source-code,\n"
 109                      "in buildscripts/clean-fonts.sh");
 110               error (s);
 111             }
 112         }
 113     }
 114
 115   return dynamic_cast<Adobe_font_metric*> (unsmob_metrics (val));
 116 }
 117
 118
 119 Tex_font_metric *
 120 All_font_metrics::find_tfm (String name)
 121 {
 122   SCM sname = ly_symbol2scm (name.to_str0 ());
 123   SCM name_string = scm_makfrom0str (name.to_str0 ());
 124
 125   SCM val;
 126   if (!tfm_p_dict_->try_retrieve (sname, &val))
 127     {
 128       String path;
 129
 130       if (path.empty_b ())
 131         {
 132           String p = kpathsea_find_tfm (name.to_str0 ());
 133           if (p.length ())
 134             path = p;
 135         }
 136
 137       if (path.empty_b ())
 138         path = search_path_.find (name  + ".tfm");
 139       if (path.empty_b ())
 140         return 0;
 141
 142       if (verbose_global_b)
 143         progress_indication ("[" + path);
 144
 145       val = Tex_font_metric::make_tfm (path);
 146
 147       if (verbose_global_b)
 148         progress_indication ("]");
 149
 150       unsmob_metrics (val)->path_ = path;
 151       unsmob_metrics (val)->description_ = gh_cons (name_string, gh_double2scm (1.0));
 152       tfm_p_dict_->set (sname, val);
 153
 154       scm_gc_unprotect_object (val);
 155     }
 156
 157   return
 158     dynamic_cast<Tex_font_metric*> (unsmob_metrics (val));
 159 }
 160
 161
 162
 163 Font_metric *
 164 All_font_metrics::find_font (String name)
 165 {
 166   if ((name.left_string (4) == "feta") ||
 167       (name.left_string (8) == "parmesan"))
 168     {
 169       Font_metric * f = find_afm (name);
 170       if (f)
 171         return f;
 172       else
 173       f =find_tfm (name);
 174       if (f)
 175         return f ;
 176     }
 177   else
 178     {
 179       Font_metric * f = find_tfm (name);
 180       if (f)
 181         return f;
 182       else
 183       f =find_afm (name);
 184       if (f)
 185         return f ;
 186     }
 187
 188   warning (_f ("can't find font: `%s'", name.to_str0 ()));
 189   warning (_ ("Loading default font"));
 190
 191   String def_name = default_font_str0_;
 192
 193   /*
 194     we're in emergency recovery mode here anyway, so don't try to do
 195     anything smart that runs the risk of failing.  */
 196   Font_metric*  f= find_afm (def_name);
 197   if (f)
 198     return f;
 199
 200   f =  find_tfm (def_name);
 201   if (f)
 202     return f;
 203
 204   error (_f ("can't find default font: `%s'", def_name.to_str0 ()));
 205   error (_f ("(search path: `%s')", search_path_.to_string ()));
 206   error (_ ("Giving up"));
 207
 208   return 0;
 209 }
 210
 211