Moved jam into the buildtools modules, where it belongs.

git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@15729 a95241bf-73f2-0310-859d-f6bbb57e9c96

jam/command.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright 1994 Christopher Seiwald.
+ *
+ * This file is part of Jam - see jam.c for Copyright information.
+ */
+
+/*
+ * command.h - the CMD structure and routines to manipulate them
+ *
+ * Both ACTION and CMD contain a rule, targets, and sources.  An
+ * ACTION describes a rule to be applied to the given targets and
+ * sources; a CMD is what actually gets executed by the shell.  The
+ * differences are due to:
+ *
+ *	ACTIONS must be combined if 'actions together' is given.
+ *	ACTIONS must be split if 'actions piecemeal' is given.
+ *	ACTIONS must have current sources omitted for 'actions updated'.
+ *
+ * The CMD datatype holds a single command that is to be executed 
+ * against a target, and they can chain together to represent the 
+ * full collection of commands used to update a target.
+ *
+ * Structures:
+ *
+ * 	CMD - an action, ready to be formatted into a buffer and executed
+ *
+ * External routines:
+ *
+ * 	cmd_new() - return a new CMD or 0 if too many args
+ *	cmd_free() - delete CMD and its parts
+ *	cmd_next() - walk the CMD chain
+ */
+
+/*
+ * CMD - an action, ready to be formatted into a buffer and executed
+ */
+
+typedef struct _cmd CMD;
+
+struct _cmd
+{
+	CMD	*next;
+	CMD	*tail;		/* valid on in head */
+	RULE	*rule;		/* rule->actions contains shell script */
+	LIST	*shell;		/* $(SHELL) value */
+	LOL	args;		/* LISTs for $(<), $(>) */
+	char	buf[ MAXLINE ];	/* actual commands */
+} ;
+
+CMD *cmd_new(
+	RULE	*rule,		/* rule (referenced) */
+	LIST	*targets,	/* $(<) (freed) */
+	LIST	*sources,	/* $(>) (freed) */
+	LIST	*shell,		/* $(SHELL) (freed) */
+	int	maxline );	/* max line length */
+
+void cmd_free( CMD *cmd );
+
+# define cmd_next( c ) ((c)->next)