/* papersiz.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" const char *lengthnames[]={ "sp", "pt", "bp", "dd", "mm", "pc", "cc", "cm", "in" }; const int32_t lengthsp[]={ 1L, 65536L, 65782L, 70124L, 186468L, 786432L, 841489L, 1864680L, 4736286L }; /* * Convert a double[unit], e.g., "3.2cm" or "1.0in" into length in pixels. * Advance the passed pointer as well. */ int32_t myatodim(char ** p) { double tmp; /* double accuracy is enough, I think */ int i=0; tmp = strtod(*p,p); while (**p == ' ') (*p)++; while (i<8 && ((*p)[0]!=lengthnames[i][0] || (*p)[1]!=lengthnames[i][1])) i++; if (i==8 && ((*p)[0]!=lengthnames[i][0] || (*p)[1]!=lengthnames[i][1])) Warning("unrecognized length unit \"%.2s\", assuming inches",*p); while (**p != ',' && **p !='\0') (*p)++; tmp = tmp*lengthsp[i]*dpi/4736286L; /* sp * dots/in / (sp/in), convert sp to pixels */ return((int32_t) tmp); } /* * The routine where we handle the paper size special. We need to pass in * the string after the `papersize=' specification. */ void handlepapersize(char * p, int32_t * x, int32_t * y) { while (*p == ' ') p++ ; *x = myatodim(&p) ; while (*p == ' ' || *p == ',') p++ ; *y = myatodim(&p) ; }