readline completion: now mainly working

1 files changed, 48 insertions, 0 deletions

diff --git a/edit-readline.c b/edit-readline.c
index 6a997c5..c562c62 100644
--- a/edit-readline.c
+++ b/edit-readline.c
@@ -14,13 +14,61 @@ struct cookie {
 	char *buffer;
 };
 
+/* teach readline how to quote a filename in rc */
+static char *quote(char *text, int type, char *qp) {
+	char *p, *r;
+
+	/* worst case: string is entirely quote characters each of which will
+	 * be doubled, plus space for initial and final quotes and \0 */
+	p = r = malloc(strlen(text) * 2 + 3);
+	if (!r) return 0;
+	/* supply opening quote unless already there */
+	if (*qp != '\'')
+		*p++ = '\'';
+	while (*text) {
+		if (*text == '\'')
+			*p++ = '\''; /* double existing quote */
+		*p++ = *text++;
+	}
+	if (type == SINGLE_MATCH)
+		*p++ = '\'';
+	*p = '\0';
+	return r;
+}
+
+char *unquote(char *text, int unused) {
+	char *p, *r;
+
+	p = r = malloc(strlen(text) + 1);
+	if (!r) return 0;
+	while (*text) {
+		*p++ = *text++;
+		if (*(text - 1) == '\'' && *text == '\'') ++text;
+	}
+	*p = '\0';
+	return r;
+}
+static char **complete(const char *text, int start, int end) {
+	//fprintf(stderr, "completer called on %s with %d and %d", text, start, end);
+	/* we can look at rl_line_buffer to see whether to complete as a
+	 * command or a filename (should we do variables too?). for now, assume
+	 * it's a filename */
+	/* it's a filename: let readline do it's default thing */
+	return 0;
+}
+
 void *edit_begin(int fd) {
 	List *hist;
 	struct cookie *c;
 
 	rl_catch_signals = 0;
 	rl_completer_quote_characters = "'";
+	rl_basic_word_break_characters = " \t\n`@$><=;|&{(";
+	rl_basic_quote_characters = "";
 	rl_filename_quote_characters = "\t\n !#$&'()*;<=>?@[\\]^`{|}~";
+	rl_filename_quoting_function = quote;
+	rl_filename_dequoting_function = unquote;
+	rl_attempted_completion_function = complete;
 
 	hist = varlookup("history");
 	if (hist != NULL)