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/* |
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* Copyright (C) the libgit2 contributors. All rights reserved. |
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* |
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* This file is part of libgit2, distributed under the GNU GPL v2 with |
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* a Linking Exception. For full terms see the included COPYING file. |
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*/ |
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#ifndef INCLUDE_common_h__ |
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#define INCLUDE_common_h__ |
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#include "git2_util.h" |
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#include "errors.h" |
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/* |
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* Include the declarations for deprecated functions; this ensures |
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* that they're decorated with the proper extern/visibility attributes. |
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*/ |
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#include "git2/deprecated.h" |
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#include "posix.h" |
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/** |
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* Initialize a structure with a version. |
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*/ |
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GIT_INLINE(void) git__init_structure(void *structure, size_t len, unsigned int version) |
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{ |
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memset(structure, 0, len); |
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*((int*)structure) = version; |
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} |
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#define GIT_INIT_STRUCTURE(S,V) git__init_structure(S, sizeof(*S), V) |
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#define GIT_INIT_STRUCTURE_FROM_TEMPLATE(PTR,VERSION,TYPE,TPL) do { \ |
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TYPE _tmpl = TPL; \ |
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GIT_ERROR_CHECK_VERSION(&(VERSION), _tmpl.version, #TYPE); \ |
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memcpy((PTR), &_tmpl, sizeof(_tmpl)); } while (0) |
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/** |
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* Check a versioned structure for validity |
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*/ |
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0
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GIT_INLINE(int) git_error__check_version(const void *structure, unsigned int expected_max, const char *name) |
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{ |
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unsigned int actual; |
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0
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0
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if (!structure) |
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0
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return 0; |
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0
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actual = *(const unsigned int*)structure; |
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0
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0
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if (actual > 0 && actual <= expected_max) |
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0
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0
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return 0; |
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0
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git_error_set(GIT_ERROR_INVALID, "invalid version %d on %s", actual, name); |
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0
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return -1; |
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} |
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#define GIT_ERROR_CHECK_VERSION(S,V,N) if (git_error__check_version(S,V,N) < 0) return -1 |
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55
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#endif |