libass/ass_utils.c

   1 // -*- c-basic-offset: 8; indent-tabs-mode: t -*-
   2 // vim:ts=8:sw=8:noet:ai:
   3 /*
   4   Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
   5
   6   This program is free software; you can redistribute it and/or modify
   7   it under the terms of the GNU General Public License as published by
   8   the Free Software Foundation; either version 2 of the License, or
   9   (at your option) any later version.
  10
  11   This program is distributed in the hope that it will be useful,
  12   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14   GNU General Public License for more details.
  15
  16   You should have received a copy of the GNU General Public License
  17   along with this program; if not, write to the Free Software
  18   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19 */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <inttypes.h>
  25
  26 #include "mputils.h"
  27 #include "ass_utils.h"
  28
  29 int mystrtoi(char** p, int base, int* res)
  30 {
  31         char* start = *p;
  32         *res = strtol(*p, p, base);
  33         if (*p != start) return 1;
  34         else return 0;
  35 }
  36
  37 int mystrtou32(char** p, int base, uint32_t* res)
  38 {
  39         char* start = *p;
  40         *res = strtoll(*p, p, base);
  41         if (*p != start) return 1;
  42         else return 0;
  43 }
  44
  45 int mystrtod(char** p, double* res)
  46 {
  47         char* start = *p;
  48         *res = strtod(*p, p);
  49         if (*p != start) return 1;
  50         else return 0;
  51 }
  52
  53 int strtocolor(char** q, uint32_t* res)
  54 {
  55         uint32_t color = 0;
  56         int result;
  57         char* p = *q;
  58
  59         if (*p == '&') ++p;
  60         else mp_msg(MSGT_ASS, MSGL_DBG2, "suspicious color format: \"%s\"\n", p);
  61
  62         if (*p == 'H' || *p == 'h') {
  63                 ++p;
  64                 result = mystrtou32(&p, 16, &color);
  65         } else {
  66                 result = mystrtou32(&p, 0, &color);
  67         }
  68
  69         {
  70                 unsigned char* tmp = (unsigned char*)(&color);
  71                 unsigned char b;
  72                 b = tmp[0]; tmp[0] = tmp[3]; tmp[3] = b;
  73                 b = tmp[1]; tmp[1] = tmp[2]; tmp[2] = b;
  74         }
  75         if (*p == '&') ++p;
  76         *q = p;
  77
  78         *res = color;
  79         return result;
  80 }
  81