From 4b0d303ceb65e4e5ba0c4f77f424f9d667f9eb4e Mon Sep 17 00:00:00 2001
From: Achim Gsell <achim.gsell@psi.ch>
Date: Fri, 11 Mar 2011 16:12:17 +0000
Subject: [PATCH] - h5_attachments.c added

---
 .gitattributes              |   1 +
 src/h5core/h5_attachments.c | 148 ++++++++++++++++++++++++++++++++++++
 2 files changed, 149 insertions(+)
 create mode 100644 src/h5core/h5_attachments.c

diff --git a/.gitattributes b/.gitattributes
index a7fd363..2f79ef6 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -393,6 +393,7 @@ src/Fortran/TestUnderscore.f -text
 src/Fortran/TestUnderscoreC.c -text
 src/Makefile.am -text
 src/h5core/Makefile.am -text
+src/h5core/h5_attachments.c -text
 src/h5core/h5_attribs.c -text
 src/h5core/h5_attribs_private.h -text
 src/h5core/h5_core_private.h -text
diff --git a/src/h5core/h5_attachments.c b/src/h5core/h5_attachments.c
new file mode 100644
index 0000000..b8f2d21
--- /dev/null
+++ b/src/h5core/h5_attachments.c
@@ -0,0 +1,148 @@
+#include "h5core/h5_core.h"
+#include "h5_core_private.h"
+
+static hid_t
+open_space_all (
+	h5_file_t* const f,
+	const hid_t dataset_id
+	) {
+	UNUSED_ARGUMENT (f);
+	UNUSED_ARGUMENT (dataset_id);
+	return H5S_ALL;
+}
+
+h5_err_t
+h5_add_attachment (
+	h5_file_t* const f,
+	const char* const name,
+	h5_int64_t* const type,
+	const char* const content,
+	const h5_size_t size
+	) {
+	H5_CORE_API_ENTER2 (h5_ssize_t,
+			    "name=\"%s\, type=%d, content=0x%p",
+			    name, type, content);
+	// write only on proc 0
+	if (f->myproc != 0) {
+		H5_CORE_API_LEAVE (H5_SUCCESS);
+	}
+	TRY (group_id = h5priv_open_group (f, f->file, H5_ATTACHMENT));
+        TRY (exists = hdf5_link_exists (group_id, name));
+	if (exists > 0) {
+		// warn user on overwrite
+		h5_warn ("Dataset %s/%s already exists",
+			 hdf5_get_objname(group_id), name);
+
+	}
+	h5_dsinfo_t dsinfo;
+	strncpy (dsinfo.name, name, sizeof (dsinfo.name) - 1);
+	dsinfo.rank = 1;
+	dsinfo.dims[0] = size;
+	dsinfo.max_dims[0] = size;
+	dsinfo.type_id = type;
+	dsinfo.create_prop = f->create_prop;
+	dsinfo.access_prop = f->access_prop;
+	TRY (h5priv_write_dataset_by_name (
+		f,
+		group_id,
+		&dsinfo,
+		open_space_all,
+		open_space_all,
+		content));
+	TRY (hdf5_close_group (group_id));
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}
+
+static inline hid_t
+open_attachments (
+	h5_file_t* const f
+	) {
+	h5_err_t exists;
+        TRY (exists = hdf5_link_exists(f->file, H5_ATTACHMENT));
+	if (exists > 0) {
+		return hdf5_open_group (f->file, H5_ATTACHMENT);
+	} else {
+		return h5_warn ("No attachment group in file");
+	}
+}
+
+h5_ssize_t
+h5_get_num_attachments (
+	h5_file_t* const f
+	) {
+	H5_CORE_API_ENTER0 (h5_ssize_t);
+	h5_ssize_t num = 0;
+	hid_t group_id;
+        TRY (group_id = open_attachments (f));
+	if (group_id < 0) {
+		H5_CORE_API_LEAVE (0);
+	}
+	TRY (num = hdf5_get_num_datasets (f->file));
+	TRY (hdf5_close_group (group_id));
+	H5_CORE_API_RETURN (num);
+}
+
+h5_err_t
+h5_get_attachment_info_by_idx (
+	h5_file_t* const f,
+	const size_t idx,		// IN
+	char* const name,		// OUT
+	size_t l_name,			// IN
+	h5_int64_t* const type,		// OUT
+	h5_size_t* const npoints	// OUT
+	) {
+	H5_CORE_API_ENTER0 (h5_err_t);
+        TRY (group_id = open_attachments (f));
+	if (group_id < 0) {
+		H5_CORE_API_LEAVE (0);
+	}
+	TRY (hdf5_get_dataset_info_by_idx (group_id, idx, name, l_name, type, npoints));
+	TRY (hdf5_close_group (group_id));
+	H5_CORE_API_RETURN (num);
+}
+
+h5_err_t
+h5_get_attachment_info_by_name (
+	h5_file_t* const f,
+	const char* const name,	// IN
+	h5_int64_t* const type,	// OUT
+	h5_size_t* const nelem	// OUT
+	) {
+	H5_CORE_API_ENTER0 (h5_err_t);
+	hid_t group_id;
+        TRY (group_id = open_attachments (f));
+	if (group_id < 0) {
+		H5_CORE_API_LEAVE (H5_NOK);
+	}
+	TRY (hdf5_get_dataset_info_by_name (group_id, idx, name, type, npoints));
+	TRY (hdf5_close_group (group_id));
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}
+
+h5_err_t
+h5_get_attachment (
+	h5_file_t* const f,
+	const char* const name,
+	const hid_t type,
+	void* const content,
+	) {
+	H5_CORE_API_ENTER0 (h5_err_t);
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}
+
+
+h5_err_t
+h5_remove_attachment (
+	h5_file_t* const f,
+	const char* const name
+	) {
+	H5_CORE_API_ENTER0 (h5_err_t);
+	hid_t group_id;
+        TRY (group_id = open_attachments (f));
+	if (group_id < 0) {
+		H5_CORE_API_LEAVE (H5_NOK);
+	}
+	TRY (hdf5_delete_link (group_id, name, H5P_DEFAULT));
+	TRY (hdf5_close_group (group_id));
+	H5_CORE_API_RETURN (H5_SUCCESS);
+}