thodg/libgit2/examples/network/index-pack.c

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• Hash : 0b33fca0
  Author :
  Date : 2013-10-02T13:39:35
  

  indexer: fix thin packs
  
  When given an ODB from which to read objects, the indexer will attempt
  to inject the missing bases at the end of the pack and update the
  header and trailer to reflect the new contents.
  

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• examples/network/index-pack.c

• #include <git2.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <sys/types.h>
  #include <sys/stat.h>
  #include <fcntl.h>
  #ifdef _WIN32
  # include <io.h>
  # include <Windows.h>
  
  # define open _open
  # define read _read
  # define close _close
  
  #define ssize_t unsigned int
  #else
  # include <unistd.h>
  #endif
  #include "common.h"
  
  // This could be run in the main loop whilst the application waits for
  // the indexing to finish in a worker thread
  static int index_cb(const git_transfer_progress *stats, void *data)
  {
  	(void)data;
  	printf("\rProcessing %d of %d", stats->indexed_objects, stats->total_objects);
  
  	return 0;
  }
  
  int index_pack(git_repository *repo, int argc, char **argv)
  {
  	git_indexer_stream *idx;
  	git_transfer_progress stats = {0, 0};
  	int error;
  	char hash[GIT_OID_HEXSZ + 1] = {0};
  	int fd;
  	ssize_t read_bytes;
  	char buf[512];
  
  	(void)repo;
  
  	if (argc < 2) {
  		fprintf(stderr, "usage: %s index-pack <packfile>\n", argv[-1]);
  		return EXIT_FAILURE;
  	}
  
  	if (git_indexer_stream_new(&idx, ".", NULL, NULL, NULL) < 0) {
  		puts("bad idx");
  		return -1;
  	}
  
  	if ((fd = open(argv[1], 0)) < 0) {
  		perror("open");
  		return -1;
  	}
  
  	do {
  		read_bytes = read(fd, buf, sizeof(buf));
  		if (read_bytes < 0)
  			break;
  
  		if ((error = git_indexer_stream_add(idx, buf, read_bytes, &stats)) < 0)
  			goto cleanup;
  
  		index_cb(&stats, NULL);
  	} while (read_bytes > 0);
  
  	if (read_bytes < 0) {
  		error = -1;
  		perror("failed reading");
  		goto cleanup;
  	}
  
  	if ((error = git_indexer_stream_finalize(idx, &stats)) < 0)
  		goto cleanup;
  
  	printf("\rIndexing %d of %d\n", stats.indexed_objects, stats.total_objects);
  
  	git_oid_fmt(hash, git_indexer_stream_hash(idx));
  	puts(hash);
  
   cleanup:
  	close(fd);
  	git_indexer_stream_free(idx);
  	return error;
  }
  

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