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102 lines
4.4 KiB
C
102 lines
4.4 KiB
C
/*****************************************************************************/
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/* */
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/* searchpath.h */
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/* */
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/* Handling of search paths */
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/* */
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/* */
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/* */
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/* (C) 2000-2010, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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/* Exports facilities to search files in a list of directories. */
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#ifndef SEARCHPATH_H
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#define SEARCHPATH_H
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* A search path is a pointer to the list */
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typedef struct Collection SearchPath;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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SearchPath* NewSearchPath (void);
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/* Create a new, empty search path list */
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void AddSearchPath (SearchPath* P, const char* NewPath);
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/* Add a new search path to the end of an existing list */
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void AddSearchPathFromEnv (SearchPath* P, const char* EnvVar);
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/* Add a search path from an environment variable to the end of an existing
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* list.
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*/
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void AddSubSearchPathFromEnv (SearchPath* P, const char* EnvVar, const char* SubDir);
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/* Add a search path from an environment variable, adding a subdirectory to
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* the environment variable value.
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*/
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int PushSearchPath (SearchPath* P, const char* NewPath);
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/* Add a new search path to the head of an existing search path list, provided
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* that it's not already there. If the path is already at the first position,
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* return zero, otherwise return a non zero value.
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*/
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void PopSearchPath (SearchPath* P);
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/* Remove a search path from the head of an existing search path list */
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void ForgetSearchPath (SearchPath* P);
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/* Forget all search paths in the given list */
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char* SearchFile (const SearchPath* P, const char* File);
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/* Search for a file in a list of directories. Return a pointer to a malloced
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* area that contains the complete path, if found, return 0 otherwise.
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*/
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/* End of searchpath.h */
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#endif
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