Added argument parameters.

Makefile

@@ -1,8 +1,25 @@
+# Copyright (C) 2019 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+# Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 CC=gcc
 DEBUG=0
 INCFLAGS=`pkg-config jack --cflags`
 LDFLAGS=`pkg-config jack --libs` -lreadline
 CFLAGS=$(INCFLAGS) -std=c99 -Wall -Wextra -Wfatal-errors -Werror
+HDRS=src/args.h
 OBJS=src/main.o
 
 ifeq ($(DEBUG),1)
@@ -11,7 +28,7 @@ else
 	CFLAGS+=-O2 -DNDEBUG
 endif
 
-%.o:%.c
+%.o:%.c $(HDRS)
 	$(CC) -c -o $@ $< $(CFLAGS)
 
 saus: $(OBJS)

README

@@ -1,8 +1,8 @@
 ============
 *** SAUS ***
 ============
-Scripted AUdio Software is a command-line tool for real-time audio
+Scripted AUdio Software is a command-line tool for real-time scripted
-scripted filtering via JACK audio inputs. The user writes scripts which
+audio filtering via JACK audio inputs. The user writes scripts which
 modify the frequency and amplitude of the sound waves coming from the
 JACK input.
 
@@ -13,6 +13,7 @@ To build the project you will require the following dependencies:
   * GNU Make
   * C99 compatible compiler
   * JACK2
+  * GNU Readline
 
 ## Compiling
 To compile the project simply run the `make' command in the root

src/args.h

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ * Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <argp.h>
+
+const char *argp_program_version = "SAUS v1.0";
+const char *argp_program_bug_address = "<nortega@themusicinnoise.net>";
+
+static char doc[] = "saus -- a command-line tool for real-time "
+	"scripted audio filtering.";
+
+static char args_doc[] = "[-v] -f FILE | -l FILE";
+
+static struct argp_option options[] = {
+	{ "verbose",   'v', 0,       0, "Make output verbose", 0 },
+	{ "file",      'f', "FILE",  0, "Script file", 0 },
+	{ "playlist",  'l', "FILE",  0, "Playlist of script files", 0 },
+	{ 0 }
+};
+
+struct arguments {
+	int verbose;
+	char *script_file;
+	char *playlist_file;
+};
+
+static error_t parse_opt(int key, char *arg, struct argp_state *state) {
+	struct arguments *arguments = state->input;
+
+	switch(key)
+	{
+		case 'v':
+			arguments->verbose = 1;
+			break;
+		case 'f':
+			arguments->script_file = arg;
+			break;
+		case 'l':
+			arguments->playlist_file = arg;
+			break;
+		/*case ARGP_KEY_ARG:
+			if(state->arg_num > 2)
+				argp_usage(state);
+			break;
+		case ARGP_KEY_END:
+			if(state->arg_num < 1)
+				argp_usage(state);
+			break;*/
+		default:
+			return ARGP_ERR_UNKNOWN;
+	}
+	return 0;
+}
+
+static struct argp argp = { options, parse_opt, args_doc, doc, 0, 0, 0 };

src/main.c

@@ -16,8 +16,17 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "args.h"
+
 #include <stdio.h>
+#include <readline/readline.h>
 
 int main(int argc, char *argv[]) {
+	struct arguments arguments;
+	arguments.verbose = 0;
+	arguments.script_file = NULL;
+	arguments.playlist_file = NULL;
+
+	argp_parse(&argp, argc, argv, 0, 0, &arguments);
 	return 0;
 }