edit shims: better naming, editline and vrl added

1 files changed, 91 insertions, 0 deletions

diff --git a/edit-edit.c b/edit-edit.c
new file mode 100644
index 0000000..c2a5260
--- /dev/null
+++ b/edit-edit.c
@@ -0,0 +1,91 @@
+#include "rc.h"
+
+#include <stdio.h>
+
+#include <histedit.h>
+
+#include "edit.h"
+
+bool editing = 1;
+
+struct cookie {
+	EditLine *el;
+	History *hist;
+};
+
+static char *prompt;
+
+void *edit_begin(int fd) {
+	FILE *f;
+	HistEvent he;
+	struct cookie *c;
+
+	c = ealloc(sizeof *c);
+	if (fd == 0)
+		f = stdin;
+	else
+		f = fdopen(fd, "r");
+	c->el = el_init("rc", f, stdout, stderr);
+	el_set(c->el, EL_SIGNAL, 0);
+	el_source(c->el, NULL);
+
+	c->hist = history_init();
+	history(c->hist, &he, H_SETSIZE, 20);
+	el_set(c->el, EL_HIST, history, c->hist);
+
+	return c;
+}
+
+
+static void edit_catcher(int sig) {
+	write(2, "\n", 1);
+	rc_raise(eError);
+}
+
+char *edit_alloc(void *cookie, size_t *count) {
+	const char *r;
+	HistEvent he;
+	struct cookie *c = cookie;
+	void (*oldint)(int), (*oldquit)(int);
+
+	oldint = sys_signal(SIGINT, edit_catcher);
+	oldquit = sys_signal(SIGQUIT, edit_catcher);
+
+	r = el_gets(c->el, count);
+
+	sys_signal(SIGINT, oldint);
+	sys_signal(SIGQUIT, oldquit);
+
+	if (r)
+		history(c->hist, &he, H_ENTER, r);
+	return (char *)r; /* cast to avoid gcc warning */
+}
+
+static char *edit_prompter(EditLine *e) {
+	return prompt;
+}
+
+void edit_prompt(void *cookie, char *pr) {
+	struct cookie *c = cookie;
+
+	prompt = pr;
+	el_set(c->el, EL_PROMPT, edit_prompter);
+}
+
+void edit_free(void *cookie) {
+	/* this function deliberately left blank */
+}
+
+void edit_end(void *cookie) {
+	struct cookie *c = cookie;
+
+	el_end(c->el);
+	history_end(c->hist);
+	efree(c);
+}
+
+void edit_reset(void *cookie) {
+	struct cookie *c = cookie;
+
+	el_set(c->el, EL_TERMINAL, NULL);
+}