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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:29:51 +0000
commit6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch)
tree32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /grub-core/lib/getline.c
parentInitial commit. (diff)
downloadgrub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.tar.xz
grub2-6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e.zip
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'grub-core/lib/getline.c')
-rw-r--r--grub-core/lib/getline.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/grub-core/lib/getline.c b/grub-core/lib/getline.c
new file mode 100644
index 0000000..edb8e9f
--- /dev/null
+++ b/grub-core/lib/getline.c
@@ -0,0 +1,92 @@
+/* main.c - the normal mode main routine */
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2000,2001,2002,2003,2005,2006,2007,2008,2009,2013 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/kernel.h>
+#include <grub/normal.h>
+#include <grub/dl.h>
+#include <grub/misc.h>
+#include <grub/file.h>
+#include <grub/mm.h>
+#include <grub/term.h>
+#include <grub/env.h>
+#include <grub/parser.h>
+#include <grub/reader.h>
+#include <grub/menu_viewer.h>
+#include <grub/auth.h>
+#include <grub/i18n.h>
+#include <grub/charset.h>
+#include <grub/script_sh.h>
+
+/* Read a line from the file FILE. */
+char *
+grub_file_getline (grub_file_t file)
+{
+ char c;
+ grub_size_t pos = 0;
+ char *cmdline;
+ int have_newline = 0;
+ grub_size_t max_len = 64;
+
+ /* Initially locate some space. */
+ cmdline = grub_malloc (max_len);
+ if (! cmdline)
+ return 0;
+
+ while (1)
+ {
+ if (grub_file_read (file, &c, 1) != 1)
+ break;
+
+ /* Skip all carriage returns. */
+ if (c == '\r')
+ continue;
+
+
+ if (pos + 1 >= max_len)
+ {
+ char *old_cmdline = cmdline;
+ max_len = max_len * 2;
+ cmdline = grub_realloc (cmdline, max_len);
+ if (! cmdline)
+ {
+ grub_free (old_cmdline);
+ return 0;
+ }
+ }
+
+ if (c == '\n')
+ {
+ have_newline = 1;
+ break;
+ }
+
+ cmdline[pos++] = c;
+ }
+
+ cmdline[pos] = '\0';
+
+ /* If the buffer is empty, don't return anything at all. */
+ if (pos == 0 && !have_newline)
+ {
+ grub_free (cmdline);
+ cmdline = 0;
+ }
+
+ return cmdline;
+}