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Diffstat (limited to 'REORG.TODO/string/envz.h')
-rw-r--r-- | REORG.TODO/string/envz.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/REORG.TODO/string/envz.h b/REORG.TODO/string/envz.h new file mode 100644 index 0000000000..330cdd3d8a --- /dev/null +++ b/REORG.TODO/string/envz.h @@ -0,0 +1,73 @@ +/* Routines for dealing with '\0' separated environment vectors + Copyright (C) 1995-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _ENVZ_H +#define _ENVZ_H 1 + +#include <features.h> + +#include <errno.h> + +/* Envz's are argz's too, and should be created etc., using the same + routines. */ +#include <argz.h> + +__BEGIN_DECLS + +/* Returns a pointer to the entry in ENVZ for NAME, or 0 if there is none. */ +extern char *envz_entry (const char *__restrict __envz, size_t __envz_len, + const char *__restrict __name) + __THROW __attribute_pure__; + +/* Returns a pointer to the value portion of the entry in ENVZ for NAME, or 0 + if there is none. */ +extern char *envz_get (const char *__restrict __envz, size_t __envz_len, + const char *__restrict __name) + __THROW __attribute_pure__; + +/* Adds an entry for NAME with value VALUE to ENVZ & ENVZ_LEN. If an entry + with the same name already exists in ENVZ, it is removed. If VALUE is + NULL, then the new entry will a special null one, for which envz_get will + return NULL, although envz_entry will still return an entry; this is handy + because when merging with another envz, the null entry can override an + entry in the other one. Null entries can be removed with envz_strip (). */ +extern error_t envz_add (char **__restrict __envz, + size_t *__restrict __envz_len, + const char *__restrict __name, + const char *__restrict __value) __THROW; + +/* Adds each entry in ENVZ2 to ENVZ & ENVZ_LEN, as if with envz_add(). If + OVERRIDE is true, then values in ENVZ2 will supersede those with the same + name in ENV, otherwise not. */ +extern error_t envz_merge (char **__restrict __envz, + size_t *__restrict __envz_len, + const char *__restrict __envz2, + size_t __envz2_len, int __override) __THROW; + +/* Remove the entry for NAME from ENVZ & ENVZ_LEN, if any. */ +extern void envz_remove (char **__restrict __envz, + size_t *__restrict __envz_len, + const char *__restrict __name) __THROW; + +/* Remove null entries. */ +extern void envz_strip (char **__restrict __envz, + size_t *__restrict __envz_len) __THROW; + +__END_DECLS + +#endif /* envz.h */ |