X-Git-Url: https://git.rohieb.name/hackover2013-badge-firmware.git/blobdiff_plain/637dcc82c8595130b3627c526126946b43c0707a..2b2a3cd6862d9b1668249b4f8e428d83c493662e:/badge/ui/browser.c

diff --git a/badge/ui/browser.c b/badge/ui/browser.c
index 4c37f94..39a4d8a 100644
--- a/badge/ui/browser.c
+++ b/badge/ui/browser.c
@@ -1,6 +1,41 @@
 #include "browser.h"
 #include "menu.h"
 
-void badge_browse_textfile(char const *fname) {
+#include <drivers/fatfs/ff.h>
+
+enum {
+  LINE_LENGTH = 16
+};
+
+static void badge_browse_textfile_fd(FIL *fd) {
+  unsigned linecount = 0;
+
+  {
+    char buf[LINE_LENGTH];
+    while(f_gets(buf, LINE_LENGTH, fd)) {
+      ++linecount;
+    }
+  }
+
+  if(FR_OK != f_lseek(fd, 0)) {
+    return;
+  }
 
+  char lines_buf[linecount][LINE_LENGTH];
+  char const *lines[linecount];
+  unsigned i;
+
+  for(i = 0; i < linecount && f_gets(lines_buf[i], LINE_LENGTH, fd); ++i) {
+    lines[i] = lines_buf[i];
+  }
+
+  badge_scroll_text(lines, i);
+}
+
+void badge_browse_textfile(char const *fname) {
+  FIL fd;
+  if(FR_OK == f_open(&fd, fname, FA_OPEN_EXISTING | FA_READ)) {
+    badge_browse_textfile_fd(&fd);
+    f_close(&fd);
+  }
 }