diff options
author | Karl Berry <karl@freefriends.org> | 2006-01-17 21:41:51 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2006-01-17 21:41:51 +0000 |
commit | 487ca4806cc046076293cf6cc5fbba0db282bac7 (patch) | |
tree | 847b412ab5158dd7bdd7ed7e5a4cc3fbca94be32 /Build/source/texk/dvipng/tfm.c | |
parent | a3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (diff) |
texk 1
git-svn-id: svn://tug.org/texlive/trunk@1485 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/texk/dvipng/tfm.c')
-rw-r--r-- | Build/source/texk/dvipng/tfm.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/Build/source/texk/dvipng/tfm.c b/Build/source/texk/dvipng/tfm.c new file mode 100644 index 00000000000..6c408895491 --- /dev/null +++ b/Build/source/texk/dvipng/tfm.c @@ -0,0 +1,80 @@ +/* tfm.c */ + +/************************************************************************ + + Part of the dvipng distribution + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. + + Copyright (C) 2002-2005 Jan-Åke Larsson + +************************************************************************/ + +#include "dvipng.h" +#if HAVE_ALLOCA_H +# include <alloca.h> +#endif + +bool ReadTFM(struct font_entry * tfontp, char* tfmname) +{ + struct filemmap fmmap; + struct char_entry *tcharptr; + unsigned char *position; + int lh,bc,ec,nw, c; + dviunits* width; + + DEBUG_PRINT((DEBUG_DVI|DEBUG_FT|DEBUG_TFM), + ("\n OPEN METRICS:\t'%s'", tfmname)); + if (MmapFile(tfmname,&fmmap)) return(false); + position=(unsigned char*)fmmap.mmap; + lh = UNumRead(position+2,2); + bc = UNumRead(position+4,2); + ec = UNumRead(position+6,2); + nw = UNumRead(position+8,2); + DEBUG_PRINT(DEBUG_TFM,(" %d %d %d %d",lh,bc,ec,nw)); + width=alloca(nw*sizeof(dviunits)); + c=0; + position=position+24+(lh+ec-bc+1)*4; + while( c < nw ) { + width[c] = SNumRead(position,4); + c++; + position += 4; + } + + /* Read char widths */ + c=bc; + position=(unsigned char*)fmmap.mmap+24+lh*4; + while(c <= ec) { + DEBUG_PRINT(DEBUG_TFM,("\n@%ld TFM METRICS:\t", + (long)position - (long)fmmap.mmap)); + tcharptr=xmalloc(sizeof(struct char_entry)); + tcharptr->data=NULL; + tcharptr->tfmw=width[*position]; + DEBUG_PRINT(DEBUG_TFM,("%d [%d] %d",c,*position,tcharptr->tfmw)); + tcharptr->tfmw = (dviunits) + ((int64_t) tcharptr->tfmw * tfontp->s / (1 << 20)); + DEBUG_PRINT(DEBUG_TFM,(" (%d)",tcharptr->tfmw)); + if (c > NFNTCHARS) /* Only positive for now */ + Fatal("tfm file %s exceeds char numbering limit",tfmname); + tfontp->chr[c] = tcharptr; + c++; + position += 4; + } + UnMmapFile(&fmmap); + return(true); +} + + |