[evolution/webkit: 49/177] Improve API for handling headers in EMFormat

[Dan VrÃtil <dvratil src gnome org>]

commit b58db446b151ebc6b9c9ace3b238a1eb490c7ce4
Author: Dan VrÃtil <dvratil redhat com>
Date:   Tue Nov 22 12:11:09 2011 +0100

    Improve API for handling headers in EMFormat

 em-format/em-format.c |  102 ++++++++++++++++++++++++++++++++++++++++++++++--
 em-format/em-format.h |   18 ++++++++-
 2 files changed, 113 insertions(+), 7 deletions(-)
---
diff --git a/em-format/em-format.c b/em-format/em-format.c
index e883da4..a2a6931 100644
--- a/em-format/em-format.c
+++ b/em-format/em-format.c
@@ -1487,7 +1487,7 @@ em_format_init (EMFormat *emf)
 	em_format_clear_headers (emf);
 	for (ii = 0; ii < G_N_ELEMENTS (default_headers); ii++)
 		em_format_add_header (
-			emf, default_headers[ii].name,
+			emf, default_headers[ii].name, NULL,
 			default_headers[ii].flags);
 }
 
@@ -1643,14 +1643,17 @@ em_format_clear_headers (EMFormat *emf)
 
 	g_return_if_fail (EM_IS_FORMAT (emf));
 
-	while ((eh = g_queue_pop_head (&emf->header_list)) != NULL)
-		g_free (eh);
+	while ((eh = g_queue_pop_head (&emf->header_list)) != NULL) {
+		em_format_header_free (eh);
+	}
+
 }
 
 /**
  * em_format_add_header:
  * @emf:
  * @name: The name of the header, as it will appear during output.
+ * @value: Value of the header. Can be NULL.
  * @flags: EM_FORMAT_HEAD_* defines to control display attributes.
  *
  * Add a specific header to show.  If any headers are set, they will
@@ -1661,6 +1664,7 @@ em_format_clear_headers (EMFormat *emf)
 void
 em_format_add_header (EMFormat *emf,
                       const gchar *name,
+		      const gchar *value,
                       guint32 flags)
 {
 	EMFormatHeader *h;
@@ -1668,13 +1672,22 @@ em_format_add_header (EMFormat *emf,
 	g_return_if_fail (EM_IS_FORMAT (emf));
 	g_return_if_fail (name && *name);
 
-	h = g_malloc (sizeof (*h) + strlen (name));
+	h = em_format_header_new (name, value);
 	h->flags = flags;
-	strcpy (h->name, name);
 	g_queue_push_tail (&emf->header_list, h);
 }
 
 void
+em_format_add_header_struct (EMFormat *emf,
+			     EMFormatHeader *header)
+{
+	g_return_if_fail (EM_IS_FORMAT (emf));
+	g_return_if_fail (header && header->name);
+
+	g_queue_push_tail (&emf->header_list, header);
+}
+
+void
 em_format_add_puri (EMFormat *emf,
 		    EMFormatPURI *puri)
 {
@@ -1689,6 +1702,51 @@ em_format_add_puri (EMFormat *emf,
 	d(printf("Added PURI %s\n", puri->uri));
 }
 
+EMFormatHeader*
+em_format_remove_header (EMFormat* emf,
+			 const gchar* name,
+			 const gchar* value)
+{
+	GList *iter = NULL;
+
+	g_return_val_if_fail (EM_IS_FORMAT (emf), NULL);
+	g_return_val_if_fail (name && *name, NULL);
+
+	for (iter = g_queue_peek_head_link (&emf->header_list); iter->next != NULL; iter = iter->next) {
+
+		EMFormatHeader *header = iter->data;
+
+		if (value && *value) {
+			if ((strcmp (name, header->name) == 0) &&
+			    (strcmp (value, header->value) == 0))
+				break;
+		} else {
+			if (strcmp (name, header->name) == 0)
+				break;
+		}
+	}
+
+	if (iter) {
+		EMFormatHeader *header = iter->data;
+		g_queue_delete_link (&emf->header_list, iter);
+
+		return header;
+	}
+
+	return NULL;
+}
+
+EMFormatHeader*
+em_format_remove_header_struct (EMFormat* emf,
+				const EMFormatHeader* header)
+{
+	g_return_val_if_fail (header, NULL);
+
+	return em_format_remove_header (emf, header->name, header->value);
+}
+
+
+
 EMFormatPURI*
 em_format_find_puri (EMFormat *emf,
 		     const gchar *id)
@@ -2401,3 +2459,37 @@ em_format_puri_write (EMFormatPURI *puri,
 		}
 	}
 }
+
+EMFormatHeader*
+em_format_header_new (const gchar *name,
+		      const gchar *value)
+{
+	EMFormatHeader *header;
+
+	g_return_val_if_fail (name && *name, NULL);
+
+	header = g_new0 (EMFormatHeader, 1);
+	header->name = g_strdup (name);
+	if (value && *value)
+		header->value = g_strdup (value);
+
+	return header;
+}
+
+void
+em_format_header_free (EMFormatHeader* header)
+{
+	g_return_if_fail (header != NULL);
+
+	if (header->name) {
+		g_free (header->name);
+		header->name = NULL;
+	}
+
+	if (header->value) {
+		g_free (header->value);
+		header->value = NULL;
+	}
+
+	g_free (header);
+}
diff --git a/em-format/em-format.h b/em-format/em-format.h
index ebf87a1..c7d1160 100644
--- a/em-format/em-format.h
+++ b/em-format/em-format.h
@@ -127,7 +127,8 @@ struct _EMFormatWriterInfo {
 
 struct _EMFormatHeader {
 	guint32 flags;		/* E_FORMAT_HEADER_ * */
-	gchar name[1];
+	gchar *name;
+	gchar *value;
 };
 
 #define EM_FORMAT_HEADER_BOLD (1<<0)
@@ -226,9 +227,18 @@ CamelURL*		em_format_get_base_url		(EMFormat *emf);
 
 void			em_format_clear_headers		(EMFormat *emf);
 
-void			em_format_add_header 		(EMFormat *emf,
+void			em_format_add_header		(EMFormat *emf,
 							 const gchar *name,
+							 const gchar *value,
 							 guint32 flags);
+void			em_format_add_header_struct	(EMFormat *emf,
+							 EMFormatHeader *header);
+EMFormatHeader*		em_format_remove_header		(EMFormat *emf,
+							 const gchar *name,
+							 const gchar *value);
+EMFormatHeader*		em_format_remove_header_struct	(EMFormat *emf,
+							 const EMFormatHeader *header);
+
 void			em_format_add_puri		(EMFormat *emf,
 							 EMFormatPURI *puri);
 EMFormatPURI*		em_format_find_puri		(EMFormat *emf,
@@ -315,4 +325,8 @@ void			em_format_puri_write 		(EMFormatPURI *puri,
 							 EMFormatWriterInfo *info,
 							 GCancellable *cancellable);
 
+EMFormatHeader*		em_format_header_new		(const gchar *name,
+							 const gchar *value);
+void			em_format_header_free		(EMFormatHeader *header);
+
 #endif /* EM_FORMAT_H */