Initial revision

darcs-hash:20050920132639-ac50b-fa3b476891e1f5f67207cf4cc7bf623834cc5edc.gz

1 files changed, 101 insertions, 0 deletions

diff --git a/builtin.h b/builtin.h
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+++ b/builtin.h
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+/** \file builtin.h
+	Prototypes for functions for executing builtin functions.
+*/
+
+
+enum
+{
+	COMMAND_NOT_BUILTIN,
+	BUILTIN_REGULAR,
+	BUILTIN_FUNCTION
+}
+;
+
+#define BUILTIN_ERR_MISSING L": Expected argument"
+#define BUILTIN_ERR_COMBO L": Invalid combination of options"
+#define BUILTIN_ERR_GLOCAL L": Variable can only be one of universal, global and local"
+#define BUILTIN_ERR_EXPUNEXP L": Variable can't be both exported and unexported"
+#define BUILTIN_ERR_UNKNOWN	L": Unknown option"
+
+/**
+   Stringbuffer used to represent standard output
+*/
+extern string_buffer_t *sb_out;
+
+/**
+   Stringbuffer used to represent standard error
+*/
+extern string_buffer_t *sb_err;
+
+/**
+   Kludge. Tells builtins if output is to screen
+*/
+extern int builtin_out_redirect;
+
+/**
+   Kludge. Tells builtins if error is to screen
+*/
+extern int builtin_err_redirect;
+
+
+/**
+   Initialize builtin data. 
+*/
+void builtin_init();
+
+/**
+   Destroy builtin data.
+*/
+void builtin_destroy();
+
+/**
+  Is there a builtin command with the given name?
+*/
+int builtin_exists( wchar_t *cmd );
+
+/**
+  Execute a builtin command 
+
+  \param argv Array containing the command and parameters 
+  of the builtin.  The list is terminated by a
+  null pointer. This syntax resembles the syntax 
+  for exec.
+
+  \return the exit status of the builtin command
+*/
+int builtin_run( wchar_t **argv );
+
+/**
+  Insert all builtin names into l. These are not copies of the strings and should not be freed after use.
+*/
+void builtin_get_names( array_list_t *list );
+
+/**
+   Pushes a new set of input/output to the stack. The new stdin is supplied, a new set of output string_buffer_ts is created.
+*/
+void builtin_push_io( int stdin_fd );
+
+/**
+   Pops a set of input/output from the stack. The output string_buffer_ts are destroued, but the input file is not closed.
+*/
+void builtin_pop_io();
+
+
+/**
+   Return a one-line description of the specified builtin
+*/
+const wchar_t *builtin_get_desc( const wchar_t *b );
+
+/**
+   Counts the number of non null pointers in the specified array
+*/
+int builtin_count_args( wchar_t **argv );
+
+/**
+   Print help for the specified builtin. If \c b is sb_err, also print the line information
+*/
+void builtin_print_help( wchar_t *cmd, string_buffer_t *b );
+
+
+int builtin_set(wchar_t **argv);
+int builtin_commandline(wchar_t **argv);