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authorVicent Marti <tanoku@gmail.com>2011-03-03 20:20:45 +0200
committerVicent Marti <tanoku@gmail.com>2011-03-03 20:23:53 +0200
commit71d33382a7c55e4dd72b32cea3e4dcb7a549ab79 (patch)
tree25e9ee5e0faa82a609fa6ae156f673f623604f9e /include/git2/oid.h
parent584f49a5ceff463581f7f1b8bc23880dabca27ac (diff)
downloadlibgit2-71d33382a7c55e4dd72b32cea3e4dcb7a549ab79.tar.gz
Move the external includes folder from `src` to `include`
Signed-off-by: Vicent Marti <tanoku@gmail.com>
Diffstat (limited to 'include/git2/oid.h')
-rw-r--r--include/git2/oid.h137
1 files changed, 137 insertions, 0 deletions
diff --git a/include/git2/oid.h b/include/git2/oid.h
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+/*
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2,
+ * as published by the Free Software Foundation.
+ *
+ * In addition to the permissions in the GNU General Public License,
+ * the authors give you unlimited permission to link the compiled
+ * version of this file into combinations with other programs,
+ * and to distribute those combinations without any restriction
+ * coming from the use of this file. (The General Public License
+ * restrictions do apply in other respects; for example, they cover
+ * modification of the file, and distribution when not linked into
+ * a combined executable.)
+ *
+ * This file 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+#ifndef INCLUDE_git_oid_h__
+#define INCLUDE_git_oid_h__
+
+#include "common.h"
+#include "types.h"
+
+/**
+ * @file git2/oid.h
+ * @brief Git object id routines
+ * @defgroup git_oid Git object id routines
+ * @ingroup Git
+ * @{
+ */
+GIT_BEGIN_DECL
+
+/** Size (in bytes) of a raw/binary oid */
+#define GIT_OID_RAWSZ 20
+
+/** Size (in bytes) of a hex formatted oid */
+#define GIT_OID_HEXSZ (GIT_OID_RAWSZ * 2)
+
+/** Unique identity of any object (commit, tree, blob, tag). */
+typedef struct {
+ /** raw binary formatted id */
+ unsigned char id[GIT_OID_RAWSZ];
+} git_oid;
+
+/**
+ * Parse a hex formatted object id into a git_oid.
+ * @param out oid structure the result is written into.
+ * @param str input hex string; must be pointing at the start of
+ * the hex sequence and have at least the number of bytes
+ * needed for an oid encoded in hex (40 bytes).
+ * @return GIT_SUCCESS if valid; GIT_ENOTOID on failure.
+ */
+GIT_EXTERN(int) git_oid_mkstr(git_oid *out, const char *str);
+
+/**
+ * Copy an already raw oid into a git_oid structure.
+ * @param out oid structure the result is written into.
+ * @param raw the raw input bytes to be copied.
+ */
+GIT_EXTERN(void) git_oid_mkraw(git_oid *out, const unsigned char *raw);
+
+/**
+ * Format a git_oid into a hex string.
+ * @param str output hex string; must be pointing at the start of
+ * the hex sequence and have at least the number of bytes
+ * needed for an oid encoded in hex (40 bytes). Only the
+ * oid digits are written; a '\\0' terminator must be added
+ * by the caller if it is required.
+ * @param oid oid structure to format.
+ */
+GIT_EXTERN(void) git_oid_fmt(char *str, const git_oid *oid);
+
+/**
+ * Format a git_oid into a loose-object path string.
+ * <p>
+ * The resulting string is "aa/...", where "aa" is the first two
+ * hex digitis of the oid and "..." is the remaining 38 digits.
+ *
+ * @param str output hex string; must be pointing at the start of
+ * the hex sequence and have at least the number of bytes
+ * needed for an oid encoded in hex (41 bytes). Only the
+ * oid digits are written; a '\\0' terminator must be added
+ * by the caller if it is required.
+ * @param oid oid structure to format.
+ */
+GIT_EXTERN(void) git_oid_pathfmt(char *str, const git_oid *oid);
+
+/**
+ * Format a gid_oid into a newly allocated c-string.
+ * @param oid the oid structure to format
+ * @return the c-string; NULL if memory is exhausted. Caller must
+ * deallocate the string with free().
+ */
+GIT_EXTERN(char *) git_oid_allocfmt(const git_oid *oid);
+
+/**
+ * Format a git_oid into a buffer as a hex format c-string.
+ * <p>
+ * If the buffer is smaller than GIT_OID_HEXSZ+1, then the resulting
+ * oid c-string will be truncated to n-1 characters. If there are
+ * any input parameter errors (out == NULL, n == 0, oid == NULL),
+ * then a pointer to an empty string is returned, so that the return
+ * value can always be printed.
+ *
+ * @param out the buffer into which the oid string is output.
+ * @param n the size of the out buffer.
+ * @param oid the oid structure to format.
+ * @return the out buffer pointer, assuming no input parameter
+ * errors, otherwise a pointer to an empty string.
+ */
+GIT_EXTERN(char *) git_oid_to_string(char *out, size_t n, const git_oid *oid);
+
+/**
+ * Copy an oid from one structure to another.
+ * @param out oid structure the result is written into.
+ * @param src oid structure to copy from.
+ */
+GIT_EXTERN(void) git_oid_cpy(git_oid *out, const git_oid *src);
+
+/**
+ * Compare two oid structures.
+ * @param a first oid structure.
+ * @param b second oid structure.
+ * @return <0, 0, >0 if a < b, a == b, a > b.
+ */
+GIT_EXTERN(int) git_oid_cmp(const git_oid *a, const git_oid *b);
+
+/** @} */
+GIT_END_DECL
+#endif