Exemplos de SG_file__seek em C++ (Cpp)

Exemplo n.º 1

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void SG_vfile__end(
	SG_context* pCtx,
	SG_vfile** ppvf,
	const SG_vhash* pvh
	)
{
	SG_string* pstr = NULL;
	SG_vfile* pvf = NULL;

	SG_NULLARGCHECK_RETURN(ppvf);

	pvf = *ppvf;

	if (pvh)
	{
		SG_ARGCHECK_RETURN( !(pvf->mode & SG_FILE_RDONLY) , pvh );

		SG_ERR_CHECK(  SG_STRING__ALLOC(pCtx, &pstr)  );

		SG_ERR_CHECK(  SG_vhash__to_json(pCtx, pvh,pstr)  );

		SG_ERR_CHECK(  SG_file__seek(pCtx, pvf->pFile, 0)  );

		SG_ERR_CHECK(  SG_file__truncate(pCtx, pvf->pFile)  );

#if TRACE_VFILE
		SG_ERR_IGNORE(  SG_console(pCtx, SG_CS_STDERR, "VFileEnd: Writing %d bytes to file.\n",
								   SG_string__length_in_bytes(pstr))  );
#endif

		SG_ERR_CHECK(  SG_file__write(pCtx, pvf->pFile, SG_string__length_in_bytes(pstr), (const SG_byte *)SG_string__sz(pstr), NULL)  );
		SG_STRING_NULLFREE(pCtx, pstr);
	}
	else
	{
		if (!(pvf->mode & SG_FILE_RDONLY))
		{
			SG_ERR_CHECK(  SG_file__seek(pCtx, pvf->pFile, 0)  );

			SG_ERR_CHECK(  SG_file__truncate(pCtx, pvf->pFile)  );

#if TRACE_VFILE
			SG_ERR_IGNORE(  SG_console(pCtx, SG_CS_STDERR, "VFileEnd: Truncating file.\n")  );
#endif
		}
	}

	SG_FILE_NULLCLOSE(pCtx, pvf->pFile);

	SG_NULLFREE(pCtx, pvf);
	*ppvf = NULL;

	return;
fail:
	SG_STRING_NULLFREE(pCtx, pstr);
}

Exemplo n.º 2

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Arquivo: sg_libcurl.c Projeto: refaqtor/sourcegear_veracity_clone

static int _my_seek__file(void *instream, curl_off_t offset, int origin)
{
	_sg_curl* pMe = (_sg_curl*)instream;

	if (origin == SEEK_SET)
	{
		SG_context__push_level(pMe->pCtx);
		SG_log__report_verbose(pMe->pCtx, "SG_curl handling SEEK_SET.");
		SG_context__pop_level(pMe->pCtx);

		SG_file__seek(pMe->pCtx, pMe->readState.pFile, (SG_uint64)offset);
		if(SG_context__has_err(pMe->pCtx))
			return CURL_SEEKFUNC_FAIL;

		pMe->readState.pos = (SG_uint64)offset;
		pMe->readState.finished = SG_FALSE;
		return CURL_SEEKFUNC_OK;
	}
	else if (origin == SEEK_CUR)
	{
		SG_uint64 new_pos = (SG_uint64)((SG_int64)pMe->readState.pos+(SG_int64)offset);

		SG_context__push_level(pMe->pCtx);
		SG_log__report_verbose(pMe->pCtx, "SG_curl handling SEEK_CUR.");
		SG_context__pop_level(pMe->pCtx);

		SG_file__seek(pMe->pCtx, pMe->readState.pFile, new_pos);
		if(SG_context__has_err(pMe->pCtx))
			return CURL_SEEKFUNC_FAIL;

		pMe->readState.pos = new_pos;
		pMe->readState.finished = SG_FALSE;
		return CURL_SEEKFUNC_OK;
	}
	else if (origin == SEEK_END)
	{
		SG_uint64 new_pos = (SG_uint64)((SG_int64)pMe->readState.len+(SG_int64)offset);

		SG_context__push_level(pMe->pCtx);
		SG_log__report_verbose(pMe->pCtx, "SG_curl handling SEEK_END.");
		SG_context__pop_level(pMe->pCtx);

		SG_file__seek(pMe->pCtx, pMe->readState.pFile, new_pos);
		if(SG_context__has_err(pMe->pCtx))
			return CURL_SEEKFUNC_FAIL;

		pMe->readState.pos = new_pos;
		pMe->readState.finished = SG_FALSE;
		return CURL_SEEKFUNC_OK;
	}
	else
	{
		return CURL_SEEKFUNC_CANTSEEK;
	}
}

Exemplo n.º 3

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void SG_vfile__reread(
	SG_context* pCtx,
	SG_vfile * pvf,
	SG_vhash** ppvh)
{
	SG_vhash* pvh = NULL;
	SG_uint64 len64;
	SG_uint32 len32;
	SG_byte* p = NULL;

	SG_ERR_CHECK(  SG_file__seek_end(pCtx, pvf->pFile, &len64)  );
	SG_ERR_CHECK(  SG_file__seek(pCtx, pvf->pFile, 0)  );
	
	// TODO "len64" is uint64 because we can have huge files, but
	// TODO our buffer is limited to uint32 (on 32bit systems).
	// TODO verify that len will fit in uint32.
	len32 = (SG_uint32)len64;
	if (len32 > 0)
	{
		SG_ERR_CHECK(  SG_alloc(pCtx, 1,len32+1,&p)  );
		SG_ERR_CHECK(  SG_file__read(pCtx, pvf->pFile, len32, p, NULL)  );

		p[len32] = 0;

		SG_ERR_CHECK(  SG_VHASH__ALLOC__FROM_JSON(pCtx, &pvh, (const char*) p)  );
		*ppvh = pvh;
	}

fail:
	SG_NULLFREE(pCtx, p);
}

Exemplo n.º 4

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Arquivo: sg_libcurl.c Projeto: refaqtor/sourcegear_veracity_clone

static curlioerr _my_ioctl__file(CURL *handle, int cmd, void *clientp)
{
	_sg_curl* pMe = (_sg_curl*)clientp;

	SG_UNUSED(handle);

	if (cmd == CURLIOCMD_NOP)
	{
		SG_context__push_level(pMe->pCtx);
		SG_log__report_verbose(pMe->pCtx, "SG_curl handling CURLIOCMD_NOP.");
		SG_context__pop_level(pMe->pCtx);

		return CURLIOE_OK;
	}
	else if (cmd == CURLIOCMD_RESTARTREAD)
	{
		SG_context__push_level(pMe->pCtx);
		SG_log__report_verbose(pMe->pCtx, "SG_curl handling CURLIOCMD_RESTARTREAD.");
		SG_context__pop_level(pMe->pCtx);

		SG_file__seek(pMe->pCtx, pMe->readState.pFile, 0);
		if(SG_context__has_err(pMe->pCtx))
			return CURLIOE_FAILRESTART;

		pMe->readState.pos = 0;
		pMe->readState.finished = SG_FALSE;
		return CURLIOE_OK;
	}
	else
	{
		return CURLIOE_UNKNOWNCMD;
	}
}

Exemplo n.º 5

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