/* enc.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Copyright (C) 2002-2005 Jan-Åke Larsson ************************************************************************/ #include "dvipng.h" struct encoding* encodingp=NULL; struct encoding* InitEncoding(char* encoding) { char *pos,*max,*buf,*enc_file; int i; struct encoding* encp=NULL; struct filemmap fmmap; #ifdef HAVE_KPSE_ENC_FORMATS TEMPSTR(enc_file,kpse_find_file(encoding,kpse_enc_format,false)); #else TEMPSTR(enc_file,kpse_find_file(encoding,kpse_tex_ps_header_format,false)); #endif if (enc_file == NULL) { Warning("encoding file %s could not be found",encoding); return(NULL); } DEBUG_PRINT((DEBUG_FT|DEBUG_ENC),("\n OPEN ENCODING:\t'%s'", enc_file)); if (MmapFile(enc_file,&fmmap)) return(NULL); if ((encp = calloc(sizeof(struct encoding)+strlen(encoding)+1 +fmmap.size,1))==NULL) { Warning("cannot alloc space for encoding",enc_file); UnMmapFile(&fmmap); return(NULL); } encp->name=(char*)encp+sizeof(struct encoding); strcpy(encp->name,encoding); pos=fmmap.mmap; max=fmmap.mmap+fmmap.size; buf=encp->name+strlen(encoding)+1; #define SKIPCOMMENT(x) if (*x=='%') while (xcharname[256]=buf; while(poscharname[256])); while (pos < max && *pos!='[') { SKIPCOMMENT(pos); pos++; } while(poscharname[i++]=buf; while(poscharname[i-1])); while(posname)!=0) temp=temp->next; if (temp==NULL) { temp=InitEncoding(encoding); if (temp!=NULL) { temp->next=encodingp; encodingp=temp; } } return(temp); } void ClearEncoding(void) { struct encoding *temp=encodingp; while(temp!=NULL) { encodingp=encodingp->next; free(temp); temp=encodingp; } }