thodg/libgit2/src/git/blob.h

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• Hash : 237da401
  Author :
  Date : 2010-11-14T22:06:10
  

  Add support for blob files Blob files can now be loaded from the repository like all the other base Git types. Signed-off-by: Vicent Marti <tanoku@gmail.com>

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• src/git/blob.h

• #ifndef INCLUDE_git_blob_h__
  #define INCLUDE_git_blob_h__
  
  #include "common.h"
  #include "oid.h"
  
  /**
   * @file git/blob.h
   * @brief Git blob load and write routines
   * @defgroup git_blob Git blob load and write routines
   * @ingroup Git
   * @{
   */
  GIT_BEGIN_DECL
  
  /** In-memory representation of a blob object. */
  typedef struct git_blob git_blob;
  
  /**
   * Lookup a blob object from a repository.
   * The generated blob object is owned by the revision
   * repo and shall not be freed by the user.
   *
   * @param blob pointer to the looked up blob
   * @param repo the repo to use when locating the blob.
   * @param id identity of the blob to locate.
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_blob_lookup(git_blob **blob, git_repository *repo, const git_oid *id);
  
  /**
   * Create a new in-memory git_blob.
   *
   * The blob object must be manually filled using
   * the 'set_rawcontent' methods before it can
   * be written back to disk.
   *
   * @param blob pointer to the new blob
   * @param repo The repository where the object will reside
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_blob_new(git_blob **blob, git_repository *repo);
  
  /**
   * Fill a blob with the contents inside
   * the pointed file.
   *
   * @param blob pointer to the new blob
   * @param filename name of the file to read
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_blob_set_rawcontent_fromfile(git_blob *blob, const char *filename);
  
  /**
   * Fill a blob with the contents inside
   * the pointed buffer
   *
   * @param blob pointer to the blob
   * @param buffer buffer with the contents for the blob
   * @param len size of the buffer
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_blob_set_rawcontent(git_blob *blob, const void *buffer, size_t len);
  
  /**
   * Read the raw content of a blob.
   *
   * A copy of the raw content is stored on the buffer passed
   * to the function. If the buffer is not long enough,
   * the method will fail.
   *
   * @param blob pointer to the blob
   * @param buffer buffer to fill with contents
   * @param len size of the buffer
   * @return 0 on success; error code otherwise
   */
  GIT_EXTERN(int) git_blob_rawcontent(git_blob *blob, void *buffer, size_t len);
  
  /**
   * Get the size in bytes of the contents of a blob
   *
   * @param blob pointer to the blob
   * @return size on bytes
   */
  GIT_EXTERN(int) git_blob_rawsize(git_blob *blob);
  
  /**
   * Read a file from the working folder of a repository
   * and write it to the Object Database as a loose blob,
   * if such doesn't exist yet.
   *
   * @param written_id return the id of the written blob
   * @param repo repository where the blob will be written
   * @param path file from which the blob will be created
   */
  GIT_EXTERN(int) git_blob_writefile(git_oid *written_id, git_repository *repo, const char *path);
  
  /** @} */
  GIT_END_DECL
  #endif
  

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