dep: Add libcue

dep/libcue/src/rem.c

@@ -0,0 +1,140 @@
+/*
+ * Copyright (c) 2009, 2010 Jochen Keil
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Jochen Keil ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Jochen Keil BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "rem.h"
+
+struct Rem {
+	unsigned int cmt;
+	char *value;
+};
+
+Rem*
+rem_new(	void)
+{
+	Rem* new_rem = NULL;
+
+	Rem rem[] = {
+		{REM_DATE,			NULL},
+		{REM_REPLAYGAIN_ALBUM_GAIN,	NULL},
+		{REM_REPLAYGAIN_ALBUM_PEAK,	NULL},
+		{REM_REPLAYGAIN_TRACK_GAIN,	NULL},
+		{REM_REPLAYGAIN_TRACK_PEAK,	NULL},
+		{REM_END,			NULL}
+	};
+
+	/* sizeof(rem) = number of elements in rem[] * sizeof(Rem) */
+	new_rem = (Rem*)calloc(sizeof(rem) / sizeof(Rem), sizeof(Rem));
+	if (new_rem == NULL)
+		fprintf(stderr, "rem_new(): problem allocating memory\n");
+	else
+		memcpy(new_rem, rem, sizeof(rem));
+
+	return new_rem;
+}
+
+void
+rem_free(	Rem* rem)
+{
+	if (rem == NULL)
+		return;
+
+	Rem* ptr = rem;
+
+	do
+	{
+		free(ptr->value);
+	}
+	while ((++ptr)->cmt != REM_END);
+
+	free(rem);
+}
+
+int
+rem_is_emtpy(	Rem* rem)
+{
+	if (rem == NULL)
+		return 1;
+
+	do
+	{
+		if (rem->value != NULL)
+			return 0;
+	} while ((++rem)->cmt != REM_END);
+
+	return 1;
+}
+
+void
+rem_set(	unsigned int cmt,
+		char* value,
+		Rem* rem)
+{
+	if (rem == NULL || value == NULL)
+		return;
+
+	do
+	{
+		if (rem->cmt == cmt)
+		{
+			free(rem->value);
+			rem->value = strdup(value);
+			return;
+		}
+	} while ((++rem)->cmt != REM_END);
+}
+
+const char*
+rem_get(	RemType cmt,
+		Rem* rem)
+{
+	if (rem == NULL)
+		return NULL;
+
+	do
+	{
+		if (rem->cmt == cmt)
+		{
+			if (rem->value != NULL)
+				return rem->value;
+			else
+				return NULL;
+		}
+	} while ((++rem)->cmt != REM_END);
+
+	return NULL;
+}
+
+void
+rem_dump(	Rem* rem)
+{
+	if (rem == NULL)
+		return;
+
+	do
+	{
+		printf("REM %u: %s\n", rem->cmt, rem->value);
+	} while ((++rem)->cmt != REM_END);
+}