From 2332679ad64e3e0318ca812421190156edec9186 Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano.tronto@gmail.com>
Date: Mon, 27 Dec 2021 12:43:14 +0100
Subject: Added option -i to accept scramble(s) from stdin, very useful for
 batch mode

---
 doc/nissy.1     |   8 +++++++-
 nissy           | Bin 0 -> 322576 bytes
 src/commands.c  |  25 +++++++++++--------------
 src/cubetypes.h |   2 ++
 src/shell.c     |  24 +++++++++++++++++++++++-
 src/shell.h     |   2 +-
 6 files changed, 44 insertions(+), 17 deletions(-)
 create mode 100755 nissy

diff --git a/doc/nissy.1 b/doc/nissy.1
index c725c0a..2d2836c 100644
--- a/doc/nissy.1
+++ b/doc/nissy.1
@@ -192,6 +192,13 @@ Display version information.
 .
 .El
 .
+.Sh SCRAMBLES
+All the commands above that accept a scramble also accept a
+.Fl Nm i
+option with no arguments.
+If this option is given, multiple scrambles are read from standard
+input (one per line) until and EOF is found, at which point stdin is cleared.
+.
 .Sh ENVIRONMENT
 Data is stored in the folder pointed to by
 .Nm $NISSYDATA.
@@ -203,7 +210,6 @@ is used instead. If none of this environment variables is defined
 (e.g. in a non-UNIX system), the current folder is used.
 .
 .Sh EXAMPLES
-.
 The command:
 .Dl nissy solve -v \(dqR\(aqU\(aqFD2L2FR2U2R2BD2LB2D\(aqB2L\(aqR\(aqBD2BU2LU2R\(aqU\(aqF\(dq
 .
diff --git a/nissy b/nissy
new file mode 100755
index 0000000..3c9c278
Binary files /dev/null and b/nissy differ
diff --git a/src/commands.c b/src/commands.c
index fc63e7c..9ecc9c7 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -4,7 +4,6 @@
 
 CommandArgs *           gen_parse_args(int c, char **v);
 CommandArgs *           help_parse_args(int c, char **v);
-CommandArgs *           print_parse_args(int c, char **v);
 CommandArgs *           parse_only_scramble(int c, char **v);
 CommandArgs *           parse_no_arg(int c, char **v);
 CommandArgs *           solve_parse_args(int c, char **v);
@@ -92,7 +91,7 @@ print_cmd = {
 	.name        = "print",
 	.usage       = "print SCRAMBLE",
 	.description = "Print written description of the cube",
-	.parse_args  = print_parse_args,
+	.parse_args  = parse_only_scramble,
 	.exec        = print_exec,
 };
 
@@ -235,6 +234,8 @@ solve_parse_args(int c, char **v)
 			infinitesols = true;
 		} else if (!strcmp(v[i], "-N")) {
 			a->opts->can_niss = true;
+		} else if (!strcmp(v[i], "-i")) {
+			a->scrstdin = true;
 		} else if (!strcmp(v[i], "-v")) {
 			a->opts->verbose = true;
 		} else if (!strcmp(v[i], "-a")) {
@@ -251,7 +252,7 @@ solve_parse_args(int c, char **v)
 	if (infinitesols && !fixedmsols)
 		a->opts->max_solutions = 1000000; /* 1M = +infty */
 
-	a->success = read_scramble(c-i, &v[i], a);
+	a->success = (a->scrstdin && i == c) || read_scramble(c-i, &v[i], a);
 	return a;
 }
 
@@ -338,7 +339,12 @@ parse_only_scramble(int c, char **v)
 {
 	CommandArgs *a = new_args();
 
-	a->success = read_scramble(c, v, a);
+	if (!strcmp(v[0], "-i")) {
+		a->scrstdin = true;
+		a->success = c == 1;
+	} else {
+		a->success = read_scramble(c, v, a);
+	}
 
 	return a;
 }
@@ -353,16 +359,6 @@ parse_no_arg(int c, char **v)
 	return a;
 }
 
-CommandArgs *
-print_parse_args(int c, char **v)
-{
-	CommandArgs *a = new_args();
-
-	a->success = read_scramble(c, v, a);
-
-	return a;
-}
-
 /* Exec functions implementation *********************************************/
 
 static void
@@ -611,6 +607,7 @@ new_args()
 	CommandArgs *args = malloc(sizeof(CommandArgs));
 
 	args->success = false;
+	args->scrstdin = false;
 	args->scramble = NULL; /* initialized in read_scramble */
 	args->opts = malloc(sizeof(SolveOptions));
 
diff --git a/src/cubetypes.h b/src/cubetypes.h
index 20e028b..8ba1341 100644
--- a/src/cubetypes.h
+++ b/src/cubetypes.h
@@ -158,6 +158,8 @@ commandargs
 	Command *                 command; /* For help */
 	int                       n;
 	int                       scrt;
+	bool                      scrstdin;
+	bool                      header;
 };
 
 struct
diff --git a/src/shell.c b/src/shell.c
index 5fb18bc..2cb3719 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -32,8 +32,10 @@ void
 exec_args(int c, char **v)
 {
 	int i;
+	char line[MAXLINELEN];
 	Command *cmd = NULL;
 	CommandArgs *args;
+	Alg *scramble;
 
 	for (i = 0; i < NCOMMANDS; i++)
 		if (commands[i] != NULL && !strcmp(v[0], commands[i]->name))
@@ -50,7 +52,27 @@ exec_args(int c, char **v)
 		return;
 	}
 
-	cmd->exec(args);
+	if (args->scrstdin) {
+		while (true) {
+			if (fgets(line, MAXLINELEN, stdin) == NULL) {
+				clearerr(stdin);
+				break;
+			}
+			
+			scramble = new_alg(line);
+
+			printf(">>> Line: %s", line);
+
+			if (scramble != NULL && scramble->len > 0) {
+				args->scramble = scramble;
+				cmd->exec(args);
+				free_alg(scramble);
+				args->scramble = NULL;
+			} 
+		}
+	} else {
+		cmd->exec(args);
+	}
 	free_args(args);
 }
 
diff --git a/src/shell.h b/src/shell.h
index bb85ba2..80f86ba 100644
--- a/src/shell.h
+++ b/src/shell.h
@@ -8,6 +8,6 @@
 #define MAXNTOKENS          255
 
 void        exec_args(int c, char **v);
-void        launch(bool prompt);
+void        launch(bool batchmode);
 
 #endif
-- 
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