begin working on completion

1 files changed, 52 insertions, 0 deletions

diff --git a/shed_complete.c b/shed_complete.c
new file mode 100644
index 0000000..145e0a7
--- /dev/null
+++ b/shed_complete.c
@@ -0,0 +1,52 @@
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <wordexp.h>
+#include "shed.h"
+
+static void shed_reprompt(struct shed *e)
+{
+	write(STDOUT_FILENO, e->prompt, strlen(e->prompt));
+	size_t pos = e->cur->pos;
+	e->cur->pos = 0;
+	e->count = (int)pos + 1;
+	shed_move_column(e);
+	e->count = 0;
+}
+
+int shed_complete_wordexp(struct shed *e)
+{
+	char *start = e->cur->buf + e->cur->pos;
+	while (!isblank(*start) && start != e->cur->buf) {
+		start--;
+	}
+	if (isblank(*start)) {
+		start++;
+	}
+
+	char *word = calloc(1, strlen(start) + 2);
+	strcpy(word, start);
+	char *end = word;
+	while (!isblank(*end) && *end != '\0') {
+		end++;
+	}
+	*end = '\0';
+
+	if (strpbrk(word, "*?[") == NULL) {
+		strcat(word, "*");
+	}
+
+	wordexp_t we = { 0 };
+	wordexp(word, &we, WRDE_NOCMD);
+	for (size_t i = 0; i < we.we_wordc; i++) {
+		write(STDOUT_FILENO, i == 0 ? "\n" : "\t", 1);
+		write(STDOUT_FILENO, we.we_wordv[i], strlen(we.we_wordv[i]));
+	}
+	write(STDOUT_FILENO, "\n", 2);
+	wordfree(&we);
+
+	free(word);
+	shed_reprompt(e);
+	return 1;
+}