home *** CD-ROM | disk | FTP | other *** search
- /* tfm_header.c: deal with the TFM header bytes.
-
- Copyright (C) 1992 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 2, 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);
- }
-