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annotate kpathsea/variable.h @ 3468:a2dc6de198f9

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[project @ 2000-01-21 22:13:13 by jwe]
author jwe
date Fri, 21 Jan 2000 22:13:13 +0000
parents faa5d0421460
children
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1 /* variable.h: Declare variable expander.
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2
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3 Copyright (C) 1993, 95 Karl Berry.
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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18
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19 #ifndef KPATHSEA_VARIABLE_H
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20 #define KPATHSEA_VARIABLE_H
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21
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22 #include <kpathsea/c-proto.h>
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23 #include <kpathsea/types.h>
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24
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25
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26 /* Return the (variable-expanded) environment variable value or config
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27 file value, or NULL. */
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28 extern string kpse_var_value P1H(const_string var);
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29
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30 /* Expand $VAR and ${VAR} references in SRC, returning the (always newly
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31 dynamically-allocated) result. An unterminated ${ or any other
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32 character following $ produce error messages, and that part of SRC is
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33 ignored. In the $VAR form, the variable name consists of consecutive
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34 letters, digits, and underscores. In the ${VAR} form, the variable
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35 name consists of whatever is between the braces.
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36
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37 In any case, ``expansion'' means calling `getenv'; if the variable is not
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38 set, look in texmf.cnf files for a definition. If not set there, either,
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39 the expansion is the empty string (no error). */
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40 extern string kpse_var_expand P1H(const_string src);
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41
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42 #endif /* not KPATHSEA_VARIABLE_H */