Add utils.h utils.c to provide get_input()

Print the prompt at the status bar, handle character, backspace, enter
and escape. Modify the variable buf in place.

2 files changed, 59 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
new file mode 100644
index 0000000..9137e21
--- /dev/null
+++ b/src/utils.c
@@ -0,0 +1,50 @@
+#include "utils.h"
+#include "fm.h"
+#include "log.h"
+#include <limits.h>
+#include <ncurses.h>
+
+int
+get_input(const char *prompt, char *buf)
+{
+	if (!prompt || !buf)
+		return -1;
+
+	int ch;
+	int i = 0;
+	curs_set(1);
+
+	while ((ch = getch())) {
+		werase(status_window->win);
+
+		if (i < 0)
+			i = 0;
+
+		if (ch >= 32 && ch <= 126) {
+			buf[i++] = ch;
+		} else if (ch == KEY_BACKSPACE || ch == 127 || ch == '\b') {
+			buf[--i] = '\0';
+		} else if (ch == 27) {
+			werase(status_window->win);
+			curs_set(0);
+			return 0;
+		} else if (ch == KEY_ENTER || ch == '\n' || ch == '\r') {
+			if (i < PATH_MAX) {
+				buf[++i] = '\0';
+				curs_set(0);
+				return 0;
+			} else {
+				return -1;
+			}
+		}
+
+		mvwprintw(status_window->win, 0, 0, "%s%s", prompt, buf);
+		wrefresh(status_window->win);
+
+		LOG_WRITE_INFO("%s", buf);
+	}
+
+	curs_set(0);
+
+	return 0;
+}
diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 0000000..2e99a21
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,9 @@
+#ifndef SF_UTILS_H
+#define SF_UTILS_H
+
+#include "fm.h"
+#include "wm.h"
+
+int get_input(const char *prompt, char *buf);
+
+#endif /* SF_UTILS_H */