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/* tfm_header.c: deal with the TFM header bytes.
Copyright (C) 1992, 2011 Free Software Foundation, Inc.
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 3, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "config.h"
#include "tfm.h"
/* Set the header in TFM_INFO according to the string S. */
void
tfm_set_header (string s, tfm_global_info_type *tfm_info)
{
string spec;
/* If S is empty, we have nothing more to do. */
if (s == NULL || *s == 0)
return;
/* Parse the specification string. */
for (spec = strtok (s, ","); spec != NULL; spec = strtok (NULL, ","))
{
string header_item;
string value_string = strchr (spec, ':');
if (value_string == NULL)
FATAL1 ("TFM headers look like `<header-item>:<value>', not `%s'",
spec);
header_item = substring (spec, 0, value_string - spec - 1);
/* Advance past the `:'. */
value_string++;
if (STREQ (header_item, "checksum"))
{
if (!integer_ok (value_string))
FATAL1 ("%s: Invalid integer constant (for checksum)",
value_string);
TFM_CHECKSUM (*tfm_info) = atoi (value_string);
}
else if (STREQ (header_item, "designsize"))
{
if (!float_ok (value_string))
FATAL1 ("%s: Invalid floating-point constant (for designsize)",
value_string);
tfm_set_design_size (atof (value_string), tfm_info);
}
else if (STREQ (header_item, "codingscheme"))
{
unsigned length = strlen (value_string);
if (strchr (value_string, '(') != NULL
|| strchr (value_string, ')') != NULL)
FATAL1 ("Your coding scheme `%s' may not contain parentheses",
value_string);
if (length > TFM_MAX_CODINGSCHEME_LENGTH)
WARNING3 ("Your coding scheme `%s' of length %d will be \
truncated to %d", value_string, length, TFM_MAX_CODINGSCHEME_LENGTH);
TFM_CODING_SCHEME (*tfm_info) = xstrdup (value_string);
}
}
}
/* Set the design and font size of TFM_INFO to DESIGN_SIZE. */
void
tfm_set_design_size (real design_size, tfm_global_info_type *tfm_info)
{
TFM_CHECK_DESIGN_SIZE (design_size);
TFM_DESIGN_SIZE (*tfm_info) = design_size;
tfm_set_fontsize (tfm_info);
}
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