cw_filename function added

FossilOrigin-Name: a3170b6e3e975c442df9656866b8e936d2417cad24f673f25fc71516c307da34

src/cw/Makefile

@@ -77,6 +77,7 @@ MAVLOBJS= \
 	mlist.o \
 	cw_load_file.o \
 	cw_save_file.o \
+	cw_filename.o \
 	message_set.o
 
 

src/cw/cw_filename.c

@@ -1,4 +1,81 @@
+/*
+    This file is part of actube.
 
+    actube is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
 
+    actube is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
 
-char * cw_filename(const char * path
+    You should have received a copy of the GNU General Public License
+    along with actube.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file 
+ * @brief implents cw_filename
+ **/
+
+#include <string.h>
+#include <stdio.h>
+#include "file.h"
+
+/**
+ * @brief Build full pathname from path, filename and extension
+ * @param path Path
+ * @param name Filename
+ * @param ext Extension
+ * @return a pointer to the create filename which has to be 
+ * released using free.
+ */
+char * cw_filename(const char * path, const char * name, const char * ext){
+	
+	int size=0;
+	
+	int path_len;
+	char c;
+	
+	char * slash="";
+	
+	path_len = strlen(path);
+	if (path_len>0){
+		c = path[path_len-1];
+		if (!strchr(CW_FILE_PATH_DELIMITERS,c)){
+			path_len++;
+			slash = "/";
+		}
+	}
+	
+	int name_len = strlen (name);
+	
+	
+	int ext_len;
+	
+	if (ext != NULL){
+		if (ext[0]=='.'){
+			ext++;
+		}
+		ext_len = strlen(ext);
+	}
+	else
+		ext_len=-1;
+
+	size = (path_len) + name_len + (ext_len+1) + 1;
+	char * result = malloc(size);
+	if (!result)
+		return NULL;
+		
+	strncpy(result,path,path_len);
+	result[path_len]=0;
+	strcat(result,slash);
+	strcat(result,name);
+	if (ext){
+		strcat(result,".");
+		strcat(result,ext);
+	}
+	
+	return result;
+}

src/cw/file.h

@@ -10,6 +10,9 @@
 
 char *cw_load_file(const char *filename,size_t *size);
 int cw_save_file(const char *filename, char *data,int len);
+char * cw_filename(const char * path, const char * name, const char * ext);
+
+#define CW_FILE_PATH_DELIMITERS "/"
 
 /**@}*/