thodg/libgit2/src/protocol.c

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• Hash : b49c8f71
  Author :
  Date : 2012-07-24T19:03:22
  

  remote: use the same code to control git and http This allows us to add capabilitites to both at the same time, keeps them in sync and removes a lot of code. gitno_buffer now uses a callback to fill its buffer, allowing us to use the same interface for git and http (which uses callbacks).

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• src/protocol.c

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  #include "common.h"
  #include "protocol.h"
  #include "pkt.h"
  #include "buffer.h"
  
  int git_protocol_store_refs(git_transport *t, int flushes)
  {
  	gitno_buffer *buf = &t->buffer;
  	git_vector *refs = &t->refs;
  	int error, flush = 0, recvd;
  	const char *line_end;
  	git_pkt *pkt;
  
  	do {
  		if (buf->offset > 0)
  			error = git_pkt_parse_line(&pkt, buf->data, &line_end, buf->offset);
  		else
  			error = GIT_EBUFS;
  
  		if (error < 0 && error != GIT_EBUFS)
  			return -1;
  
  		if (error == GIT_EBUFS) {
  			if ((recvd = gitno_recv(buf)) < 0)
  				return -1;
  
  			if (recvd == 0 && !flush) {
  				giterr_set(GITERR_NET, "Early EOF");
  				return -1;
  			}
  
  			continue;
  		}
  
  		gitno_consume(buf, line_end);
  		if (pkt->type == GIT_PKT_ERR) {
  			giterr_set(GITERR_NET, "Remote error: %s", ((git_pkt_err *)pkt)->error);
  			git__free(pkt);
  			return -1;
  		}
  
  		if (git_vector_insert(refs, pkt) < 0)
  			return -1;
  
  		if (pkt->type == GIT_PKT_FLUSH)
  			flush++;
  	} while (flush < flushes);
  
  	return flush;
  }
  
  int git_protocol_detect_caps(git_pkt_ref *pkt, git_transport_caps *caps)
  {
  	const char *ptr;
  
  	/* No refs or capabilites, odd but not a problem */
  	if (pkt == NULL || pkt->capabilities == NULL)
  		return 0;
  
  	ptr = pkt->capabilities;
  	while (ptr != NULL && *ptr != '\0') {
  		if (*ptr == ' ')
  			ptr++;
  
  		if(!git__prefixcmp(ptr, GIT_CAP_OFS_DELTA)) {
  			caps->common = caps->ofs_delta = 1;
  			ptr += strlen(GIT_CAP_OFS_DELTA);
  			continue;
  		}
  
  		if(!git__prefixcmp(ptr, GIT_CAP_MULTI_ACK)) {
  			caps->common = caps->multi_ack = 1;
  			ptr += strlen(GIT_CAP_MULTI_ACK);
  			continue;
  		}
  
  		/* We don't know this capability, so skip it */
  		ptr = strchr(ptr, ' ');
  	}
  
  	return 0;
  }
  

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