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1 /* variable.h: Declare variable expander. |
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2 |
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3 Copyright (C) 1993 Karl Berry. |
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4 |
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5 This program is free software; you can redistribute it and/or modify |
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6 it under the terms of the GNU General Public License as published by |
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7 the Free Software Foundation; either version 2, or (at your option) |
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8 any later version. |
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9 |
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10 This program 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 |
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13 GNU 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 General Public License |
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16 along with this program; 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 /* Expand $VAR and ${VAR} references in SRC, returning the (always |
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27 dynamically-allocated) result. An unterminated ${ or any other |
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28 character following $ produce error messages, and that part of SRC is |
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29 ignored. In the $VAR form, the variable name consists of consecutive |
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30 letters, digits, and underscores. In the ${VAR} form, the variable |
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31 name consists of whatever is between the braces. In any case, |
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32 ``expansion'' just means calling `getenv'; if the variable is not |
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33 set, the expansion is the empty string. */ |
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34 extern string kpse_var_expand P1H(const_string src); |
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35 |
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36 #endif /* not KPATHSEA_VARIABLE_H */ |
