introduced helper functions teco_qreg_table_get_string() and teco_qreg_table_get_integer()

* Simplifies the common task of querying an integer or string from a Q-Register table.
* Undefined Q-Regs are reported as TECO_ERROR_QREGUNDEF, so you can theoretically
  handle this case. In practice however, it requires less boilerplating to
  just call teco_qreg_table_find() manually.
* It also doesn't make sense to use these functions when getting and setting
  a register at the same time as you will want to avoid repeated lookups.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/qreg.h b/src/qreg.h
index ca35e78..1eb2cf8 100644
--- a/src/qreg.h
+++ b/src/qreg.h
@@ -16,6 +16,8 @@
  */
 #pragma once
 
+#include <string.h>
+
 #include <glib.h>
 
 //#include <rb3ptr.h>
@@ -24,6 +26,7 @@
 #include "view.h"
 #include "doc.h"
 #include "undo.h"
+#include "error.h"
 #include "string-utils.h"
 #include "rb3str.h"
 
@@ -212,6 +215,36 @@ teco_qreg_table_find(teco_qreg_table_t *table, const gchar *name, gsize len)
 	return (teco_qreg_t *)teco_rb3str_find(&table->tree, TRUE, name, len);
 }
 
+/** @memberof teco_qreg_table_t */
+static inline gboolean
+teco_qreg_table_get_string(teco_qreg_table_t *table, const gchar *name,
+                           gchar **str, gsize *len, GError **error)
+{
+	teco_qreg_t *reg = teco_qreg_table_find(table, name, strlen(name));
+	if (!reg) {
+		g_set_error(error, TECO_ERROR, TECO_ERROR_QREGUNDEF,
+		            "Q-Register \"%s\" is undefined.", name);
+		return FALSE;
+	}
+
+	return reg->vtable->get_string(reg, str, len, NULL, error);
+}
+
+/** @memberof teco_qreg_table_t */
+static inline gboolean
+teco_qreg_table_get_integer(teco_qreg_table_t *table, const gchar *name,
+                            teco_int_t *ret, GError **error)
+{
+	teco_qreg_t *reg = teco_qreg_table_find(table, name, strlen(name));
+	if (!reg) {
+		g_set_error(error, TECO_ERROR, TECO_ERROR_QREGUNDEF,
+		            "Q-Register \"%s\" is undefined.", name);
+		return FALSE;
+	}
+
+	return reg->vtable->get_integer(reg, ret, error);
+}
+
 teco_qreg_t *teco_qreg_table_edit_name(teco_qreg_table_t *table, const gchar *name,
                                        gsize len, GError **error);