2012-05-07 01:18:21 +00:00
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/*
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* tuple.c
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* management of key->value tuples
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*
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2012-07-26 02:09:31 +00:00
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* Copyright (c) 2011, 2012 pkgconf authors (see AUTHORS).
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2012-05-07 01:18:21 +00:00
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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2012-07-20 19:29:58 +00:00
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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2012-05-07 01:18:21 +00:00
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*/
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2017-09-18 04:38:25 +00:00
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#include <libpkgconf/stdinc.h>
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2015-09-06 14:35:08 +00:00
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#include <libpkgconf/libpkgconf.h>
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2012-05-07 01:18:21 +00:00
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* libpkgconf `tuple` module
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* =========================
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*
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* The `tuple` module provides key-value mappings backed by a linked list. The key-value
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* mapping is mainly used for variable substitution when parsing .pc files.
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*
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* There are two sets of mappings: a ``pkgconf_pkg_t`` specific mapping, and a `global` mapping.
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* The `tuple` module provides convenience wrappers for managing the `global` mapping, which is
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* attached to a given client object.
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*/
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_add_global(pkgconf_client_t *client, const char *key, const char *value)
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*
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* Defines a global variable, replacing the previous declaration if one was set.
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*
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* :param pkgconf_client_t* client: The pkgconf client object to modify.
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* :param char* key: The key for the mapping (variable name).
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* :param char* value: The value for the mapped entry.
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* :return: nothing
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*/
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2012-05-07 04:10:41 +00:00
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void
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2016-12-01 21:05:03 +00:00
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pkgconf_tuple_add_global(pkgconf_client_t *client, const char *key, const char *value)
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2012-05-07 04:10:41 +00:00
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{
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2022-07-26 17:08:48 +00:00
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pkgconf_tuple_add(client, &client->global_vars, key, value, false, 0);
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2012-05-07 04:10:41 +00:00
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}
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2022-08-16 19:38:40 +00:00
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static pkgconf_tuple_t *
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lookup_global_tuple(const pkgconf_client_t *client, const char *key)
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{
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pkgconf_node_t *node;
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PKGCONF_FOREACH_LIST_ENTRY(client->global_vars.head, node)
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{
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pkgconf_tuple_t *tuple = node->data;
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if (!strcmp(tuple->key, key))
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return tuple;
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}
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return NULL;
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_find_global(const pkgconf_client_t *client, const char *key)
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*
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* Looks up a global variable.
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*
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* :param pkgconf_client_t* client: The pkgconf client object to access.
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* :param char* key: The key or variable name to look up.
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* :return: the contents of the variable or ``NULL``
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* :rtype: char *
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*/
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2012-05-07 04:10:41 +00:00
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char *
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2016-12-01 21:05:03 +00:00
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pkgconf_tuple_find_global(const pkgconf_client_t *client, const char *key)
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2012-05-07 04:10:41 +00:00
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{
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2022-08-16 19:38:40 +00:00
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pkgconf_tuple_t *tuple;
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2012-05-07 04:10:41 +00:00
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2022-08-16 19:38:40 +00:00
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tuple = lookup_global_tuple(client, key);
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if (tuple == NULL)
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return NULL;
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2012-05-07 04:10:41 +00:00
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2022-08-16 19:38:40 +00:00
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return tuple->value;
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2012-05-07 04:10:41 +00:00
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_free_global(pkgconf_client_t *client)
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*
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* Delete all global variables associated with a pkgconf client object.
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*
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* :param pkgconf_client_t* client: The pkgconf client object to modify.
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* :return: nothing
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*/
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2012-05-07 04:10:41 +00:00
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void
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2016-12-01 21:05:03 +00:00
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pkgconf_tuple_free_global(pkgconf_client_t *client)
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2012-05-07 04:10:41 +00:00
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{
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2016-12-01 21:05:03 +00:00
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pkgconf_tuple_free(&client->global_vars);
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2012-05-07 04:10:41 +00:00
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_define_global(pkgconf_client_t *client, const char *kv)
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*
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* Parse and define a global variable.
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*
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* :param pkgconf_client_t* client: The pkgconf client object to modify.
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* :param char* kv: The variable in the form of ``key=value``.
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* :return: nothing
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*/
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2012-05-07 04:32:08 +00:00
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void
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2016-12-01 21:05:03 +00:00
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pkgconf_tuple_define_global(pkgconf_client_t *client, const char *kv)
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2012-05-07 04:32:08 +00:00
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{
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char *workbuf = strdup(kv);
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char *value;
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2022-08-16 19:38:40 +00:00
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pkgconf_tuple_t *tuple;
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2012-05-07 04:32:08 +00:00
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value = strchr(workbuf, '=');
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if (value == NULL)
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goto out;
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*value++ = '\0';
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2022-08-16 19:38:40 +00:00
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tuple = pkgconf_tuple_add(client, &client->global_vars, workbuf, value, false, 0);
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if (tuple != NULL)
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tuple->flags = PKGCONF_PKG_TUPLEF_OVERRIDE;
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2012-05-07 04:32:08 +00:00
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out:
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free(workbuf);
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}
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2016-12-10 02:58:15 +00:00
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static void
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pkgconf_tuple_find_delete(pkgconf_list_t *list, const char *key)
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{
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pkgconf_node_t *node, *next;
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PKGCONF_FOREACH_LIST_ENTRY_SAFE(list->head, next, node)
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{
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pkgconf_tuple_t *tuple = node->data;
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if (!strcmp(tuple->key, key))
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{
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pkgconf_tuple_free_entry(tuple, list);
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return;
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}
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}
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}
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2018-06-14 21:12:04 +00:00
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static char *
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dequote(const char *value)
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{
|
2018-07-29 00:06:33 +00:00
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char *buf = calloc((strlen(value) + 1) * 2, 1);
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2018-06-14 21:12:04 +00:00
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char *bptr = buf;
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const char *i;
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char quote = 0;
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2019-03-24 03:33:55 +00:00
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if (*value == '\'' || *value == '"')
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quote = *value;
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2018-06-14 21:12:04 +00:00
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for (i = value; *i != '\0'; i++)
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{
|
2019-03-24 03:33:55 +00:00
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if (*i == '\\' && quote && *(i + 1) == quote)
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2018-06-14 21:12:04 +00:00
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{
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i++;
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*bptr++ = *i;
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}
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2019-03-24 03:33:55 +00:00
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else if (*i != quote)
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*bptr++ = *i;
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2018-06-14 21:12:04 +00:00
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}
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return buf;
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}
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2022-07-26 17:08:48 +00:00
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static const char *
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find_sysroot(const pkgconf_client_t *client, pkgconf_list_t *vars)
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{
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const char *sysroot_dir;
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sysroot_dir = pkgconf_tuple_find(client, vars, "pc_sysrootdir");
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if (sysroot_dir == NULL)
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sysroot_dir = client->sysroot_dir;
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return sysroot_dir;
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}
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static bool
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should_rewrite_sysroot(const pkgconf_client_t *client, pkgconf_list_t *vars, const char *buf, unsigned int flags)
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{
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const char *sysroot_dir;
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if (flags & PKGCONF_PKG_PROPF_UNINSTALLED && !(client->flags & PKGCONF_PKG_PKGF_FDO_SYSROOT_RULES))
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return false;
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sysroot_dir = find_sysroot(client, vars);
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if (sysroot_dir == NULL)
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return false;
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if (*buf != '/')
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return false;
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if (!strcmp(sysroot_dir, "/"))
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return false;
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if (strlen(buf) <= strlen(sysroot_dir))
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return false;
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if (strstr(buf + strlen(sysroot_dir), sysroot_dir) == NULL)
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return false;
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return true;
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: pkgconf_tuple_t *pkgconf_tuple_add(const pkgconf_client_t *client, pkgconf_list_t *list, const char *key, const char *value, bool parse)
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*
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* Optionally parse and then define a variable.
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*
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* :param pkgconf_client_t* client: The pkgconf client object to access.
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* :param pkgconf_list_t* list: The variable list to add the new variable to.
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* :param char* key: The name of the variable being added.
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* :param char* value: The value of the variable being added.
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* :param bool parse: Whether or not to parse the value for variable substitution.
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* :return: a variable object
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* :rtype: pkgconf_tuple_t *
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*/
|
2015-09-06 15:41:40 +00:00
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pkgconf_tuple_t *
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2022-07-26 17:08:48 +00:00
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pkgconf_tuple_add(const pkgconf_client_t *client, pkgconf_list_t *list, const char *key, const char *value, bool parse, unsigned int flags)
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2012-05-07 01:18:21 +00:00
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{
|
2018-06-14 21:12:04 +00:00
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char *dequote_value;
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2015-09-06 15:41:40 +00:00
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pkgconf_tuple_t *tuple = calloc(sizeof(pkgconf_tuple_t), 1);
|
2012-05-07 01:18:21 +00:00
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2016-12-10 02:58:15 +00:00
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pkgconf_tuple_find_delete(list, key);
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2018-06-14 21:12:04 +00:00
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dequote_value = dequote(value);
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2012-05-07 01:18:21 +00:00
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tuple->key = strdup(key);
|
2015-12-07 23:02:14 +00:00
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if (parse)
|
2022-07-26 17:08:48 +00:00
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tuple->value = pkgconf_tuple_parse(client, list, dequote_value, flags);
|
2015-12-07 23:02:14 +00:00
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else
|
2018-06-14 21:12:04 +00:00
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tuple->value = strdup(dequote_value);
|
2012-05-07 01:18:21 +00:00
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2022-07-26 18:00:22 +00:00
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PKGCONF_TRACE(client, "adding tuple to @%p: %s => %s (parsed? %d)", list, key, tuple->value, parse);
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|
2015-09-06 15:31:21 +00:00
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pkgconf_node_insert(&tuple->iter, tuple, list);
|
2012-05-07 01:18:21 +00:00
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2018-06-14 21:12:04 +00:00
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free(dequote_value);
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2012-05-07 01:18:21 +00:00
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return tuple;
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}
|
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|
2016-12-11 23:28:27 +00:00
|
|
|
/*
|
|
|
|
* !doc
|
|
|
|
*
|
|
|
|
* .. c:function:: char *pkgconf_tuple_find(const pkgconf_client_t *client, pkgconf_list_t *list, const char *key)
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*
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* Look up a variable in a variable list.
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*
|
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* :param pkgconf_client_t* client: The pkgconf client object to access.
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* :param pkgconf_list_t* list: The variable list to search.
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* :param char* key: The variable name to search for.
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* :return: the value of the variable or ``NULL``
|
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|
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* :rtype: char *
|
|
|
|
*/
|
2012-05-07 01:18:21 +00:00
|
|
|
char *
|
2016-12-01 21:05:03 +00:00
|
|
|
pkgconf_tuple_find(const pkgconf_client_t *client, pkgconf_list_t *list, const char *key)
|
2012-05-07 01:18:21 +00:00
|
|
|
{
|
2015-09-06 15:31:21 +00:00
|
|
|
pkgconf_node_t *node;
|
2022-08-16 19:38:40 +00:00
|
|
|
pkgconf_tuple_t *global_tuple;
|
|
|
|
|
|
|
|
global_tuple = lookup_global_tuple(client, key);
|
|
|
|
if (global_tuple != NULL && global_tuple->flags & PKGCONF_PKG_TUPLEF_OVERRIDE)
|
|
|
|
return global_tuple->value;
|
2012-05-07 01:18:21 +00:00
|
|
|
|
2015-09-06 15:31:21 +00:00
|
|
|
PKGCONF_FOREACH_LIST_ENTRY(list->head, node)
|
2012-05-07 01:18:21 +00:00
|
|
|
{
|
2015-09-06 15:41:40 +00:00
|
|
|
pkgconf_tuple_t *tuple = node->data;
|
2013-03-01 16:45:55 +00:00
|
|
|
|
2014-02-10 23:53:47 +00:00
|
|
|
if (!strcmp(tuple->key, key))
|
2013-03-01 16:45:55 +00:00
|
|
|
return tuple->value;
|
2012-05-07 01:18:21 +00:00
|
|
|
}
|
|
|
|
|
2022-08-16 19:38:40 +00:00
|
|
|
if (global_tuple != NULL)
|
|
|
|
return global_tuple->value;
|
|
|
|
|
|
|
|
return NULL;
|
2012-05-07 01:18:21 +00:00
|
|
|
}
|
|
|
|
|
2016-12-11 23:28:27 +00:00
|
|
|
/*
|
|
|
|
* !doc
|
|
|
|
*
|
2022-07-26 17:08:48 +00:00
|
|
|
* .. c:function:: char *pkgconf_tuple_parse(const pkgconf_client_t *client, pkgconf_list_t *vars, const char *value, unsigned int flags)
|
2016-12-11 23:28:27 +00:00
|
|
|
*
|
|
|
|
* Parse an expression for variable substitution.
|
|
|
|
*
|
|
|
|
* :param pkgconf_client_t* client: The pkgconf client object to access.
|
|
|
|
* :param pkgconf_list_t* list: The variable list to search for variables (along side the global variable list).
|
|
|
|
* :param char* value: The ``key=value`` string to parse.
|
2022-07-26 17:08:48 +00:00
|
|
|
* :param uint flags: Any flags to consider while parsing.
|
2016-12-11 23:28:27 +00:00
|
|
|
* :return: the variable data with any variables substituted
|
|
|
|
* :rtype: char *
|
|
|
|
*/
|
2012-05-07 01:18:21 +00:00
|
|
|
char *
|
2022-07-26 17:08:48 +00:00
|
|
|
pkgconf_tuple_parse(const pkgconf_client_t *client, pkgconf_list_t *vars, const char *value, unsigned int flags)
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2012-05-07 01:18:21 +00:00
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{
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2015-09-06 16:29:56 +00:00
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char buf[PKGCONF_BUFSIZE];
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2012-05-07 01:18:21 +00:00
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const char *ptr;
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char *bptr = buf;
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2022-07-26 18:00:22 +00:00
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if (!(client->flags & PKGCONF_PKG_PKGF_FDO_SYSROOT_RULES) &&
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(!(flags & PKGCONF_PKG_PROPF_UNINSTALLED) || (client->flags & PKGCONF_PKG_PKGF_PKGCONF1_SYSROOT_RULES)))
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2021-03-18 12:22:11 +00:00
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{
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if (*value == '/' && client->sysroot_dir != NULL && strncmp(value, client->sysroot_dir, strlen(client->sysroot_dir)))
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bptr += pkgconf_strlcpy(buf, client->sysroot_dir, sizeof buf);
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}
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2016-12-10 03:32:55 +00:00
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2015-09-06 16:29:56 +00:00
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for (ptr = value; *ptr != '\0' && bptr - buf < PKGCONF_BUFSIZE; ptr++)
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2012-05-07 01:18:21 +00:00
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{
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2014-07-02 04:44:49 +00:00
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if (*ptr != '$' || (*ptr == '$' && *(ptr + 1) != '{'))
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2012-05-07 01:18:21 +00:00
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*bptr++ = *ptr;
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else if (*(ptr + 1) == '{')
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{
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2017-10-16 17:56:19 +00:00
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char varname[PKGCONF_ITEM_SIZE];
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2020-05-30 22:25:54 +00:00
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char *vend = varname + PKGCONF_ITEM_SIZE - 1;
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2012-05-07 01:18:21 +00:00
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char *vptr = varname;
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const char *pptr;
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char *kv, *parsekv;
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*vptr = '\0';
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for (pptr = ptr + 2; *pptr != '\0'; pptr++)
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{
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if (*pptr != '}')
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2020-05-31 01:19:48 +00:00
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{
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2020-05-30 22:25:54 +00:00
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if (vptr < vend)
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*vptr++ = *pptr;
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2020-05-31 01:19:48 +00:00
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else
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{
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*vptr = '\0';
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break;
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}
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}
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2012-05-07 01:18:21 +00:00
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else
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{
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*vptr = '\0';
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break;
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}
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}
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2022-07-26 18:00:22 +00:00
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PKGCONF_TRACE(client, "lookup tuple %s", varname);
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2012-05-07 01:18:21 +00:00
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ptr += (pptr - ptr);
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2016-12-01 21:05:03 +00:00
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kv = pkgconf_tuple_find_global(client, varname);
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2012-05-07 01:18:21 +00:00
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if (kv != NULL)
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{
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2015-12-07 23:02:14 +00:00
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strncpy(bptr, kv, PKGCONF_BUFSIZE - (bptr - buf));
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bptr += strlen(kv);
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}
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else
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{
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2016-12-01 21:05:03 +00:00
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kv = pkgconf_tuple_find(client, vars, varname);
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2012-05-07 01:18:21 +00:00
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2015-12-07 23:02:14 +00:00
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if (kv != NULL)
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{
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2022-07-26 17:08:48 +00:00
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parsekv = pkgconf_tuple_parse(client, vars, kv, flags);
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2015-12-07 23:02:14 +00:00
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strncpy(bptr, parsekv, PKGCONF_BUFSIZE - (bptr - buf));
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bptr += strlen(parsekv);
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2012-05-07 01:18:21 +00:00
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2015-12-07 23:02:14 +00:00
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free(parsekv);
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}
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2012-05-07 01:18:21 +00:00
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}
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}
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}
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*bptr = '\0';
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2017-07-16 22:35:28 +00:00
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/*
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* Sigh. Somebody actually attempted to use freedesktop.org pkg-config's broken sysroot support,
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* which was written by somebody who did not understand how sysroots are supposed to work. This
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* results in an incorrect path being built as the sysroot will be prepended twice, once explicitly,
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* and once by variable expansion (the pkgconf approach). We could simply make ${pc_sysrootdir} blank,
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* but sometimes it is necessary to know the explicit sysroot path for other reasons, so we can't really
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* do that.
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*
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* As a result, we check to see if ${pc_sysrootdir} is prepended as a duplicate, and if so, remove the
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* prepend. This allows us to handle both our approach and the broken freedesktop.org implementation's
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* approach. Because a path can be shorter than ${pc_sysrootdir}, we do some checks first to ensure it's
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* safe to skip ahead in the string to scan for our sysroot dir.
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*
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* Finally, we call pkgconf_path_relocate() to clean the path of spurious elements.
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2022-07-26 17:08:48 +00:00
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*
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* New in 1.9: Only attempt to rewrite the sysroot if we are not processing an uninstalled package.
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2017-07-16 22:35:28 +00:00
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*/
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2022-07-26 17:08:48 +00:00
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if (should_rewrite_sysroot(client, vars, buf, flags))
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2017-07-16 22:35:28 +00:00
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{
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2017-10-16 17:56:19 +00:00
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char cleanpath[PKGCONF_ITEM_SIZE];
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2022-07-26 17:08:48 +00:00
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const char *sysroot_dir = find_sysroot(client, vars);
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2017-07-16 22:35:28 +00:00
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2022-06-26 19:35:19 +00:00
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pkgconf_strlcpy(cleanpath, buf + strlen(sysroot_dir), sizeof cleanpath);
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2017-07-16 22:35:28 +00:00
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pkgconf_path_relocate(cleanpath, sizeof cleanpath);
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return strdup(cleanpath);
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}
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2012-05-07 01:18:21 +00:00
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return strdup(buf);
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_free_entry(pkgconf_tuple_t *tuple, pkgconf_list_t *list)
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*
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* Deletes a variable object, removing it from any variable lists and releasing any memory associated
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* with it.
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*
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* :param pkgconf_tuple_t* tuple: The variable object to release.
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* :param pkgconf_list_t* list: The variable list the variable object is attached to.
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* :return: nothing
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*/
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2016-12-10 02:50:33 +00:00
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void
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pkgconf_tuple_free_entry(pkgconf_tuple_t *tuple, pkgconf_list_t *list)
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{
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pkgconf_node_delete(&tuple->iter, list);
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free(tuple->key);
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free(tuple->value);
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free(tuple);
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}
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2016-12-11 23:28:27 +00:00
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/*
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* !doc
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*
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* .. c:function:: void pkgconf_tuple_free(pkgconf_list_t *list)
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*
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* Deletes a variable list and any variables attached to it.
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*
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* :param pkgconf_list_t* list: The variable list to delete.
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* :return: nothing
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*/
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2012-05-07 01:18:21 +00:00
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void
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2015-09-06 15:41:40 +00:00
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pkgconf_tuple_free(pkgconf_list_t *list)
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2012-05-07 01:18:21 +00:00
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{
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2015-09-06 15:31:21 +00:00
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pkgconf_node_t *node, *next;
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2012-05-07 01:18:21 +00:00
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2015-09-06 15:31:21 +00:00
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PKGCONF_FOREACH_LIST_ENTRY_SAFE(list->head, next, node)
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2016-12-10 02:50:33 +00:00
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pkgconf_tuple_free_entry(node->data, list);
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2022-04-01 21:15:43 +00:00
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pkgconf_list_zero(list);
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2012-05-07 01:18:21 +00:00
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}
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