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author | Vicent Marti <tanoku@gmail.com> | 2011-03-03 20:20:45 +0200 |
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committer | Vicent Marti <tanoku@gmail.com> | 2011-03-03 20:23:53 +0200 |
commit | 71d33382a7c55e4dd72b32cea3e4dcb7a549ab79 (patch) | |
tree | 25e9ee5e0faa82a609fa6ae156f673f623604f9e /include/git2/oid.h | |
parent | 584f49a5ceff463581f7f1b8bc23880dabca27ac (diff) | |
download | libgit2-71d33382a7c55e4dd72b32cea3e4dcb7a549ab79.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.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/include/git2/oid.h b/include/git2/oid.h new file mode 100644 index 00000000..5cac46f3 --- /dev/null +++ b/include/git2/oid.h @@ -0,0 +1,137 @@ +/* + * 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 |