Very early stub of sed, does nothing yet.

1 files changed, 46 insertions, 0 deletions

diff --git a/toys/sed.c b/toys/sed.c
new file mode 100644
index 00000000..39753399
--- /dev/null
+++ b/toys/sed.c
@@ -0,0 +1,46 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * sed.c - Stream editor.
+ *
+ * See http://www.opengroup.org/onlinepubs/009695399/utilities/sed.c
+ */
+
+#include "toys.h"
+#include "lib/xregcomp.h"
+
+#define TT toy.sed
+
+struct sed_command {
+	// Doubly linked list of commands.
+	struct sed_command *next, *prev;
+
+	// Regexes for s/match/data/ and /match_begin/,/match_end/command
+	regex_t *match, *match_begin, *match_end;
+
+	// For numeric ranges ala 10,20command
+	int first_line, last_line;
+
+	// Which match to replace, 0 for all.
+	int which;
+
+	// s and w commands can write to a file.  Slight optimization: we use 0
+	// instead of -1 to mean no file here, because even when there's no stdin
+	// our input file would take fd 0.
+	int outfd;
+
+	// Data string for (saicytb)
+	char *data;
+
+	// Which command letter is this?
+	char command;
+};
+
+void sed_main(void)
+{
+	struct arg_list *test;
+
+	for (test = TT.commands; test; test = test->next)
+		dprintf(2,"command=%s\n",test->arg);
+
+	printf("Hello world\n");
+}