Add some more stuff -- {get|set}mntent, getline, getdelim, etc.

1 files changed, 70 insertions, 0 deletions

diff --git a/libc/stdio/getdelim.c b/libc/stdio/getdelim.c
new file mode 100644
index 000000000..99d48bb32
--- /dev/null
+++ b/libc/stdio/getdelim.c
@@ -0,0 +1,70 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * getdelim for uclibc
+ *
+ * Copyright (C) 2000 by Lineo, inc.  Written by Erik Andersen
+ * <andersen@lineo.com>, <andersee@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program 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 Library General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+#include <errno.h>
+
+
+/* Read up to (and including) a TERMINATOR from STREAM into *LINEPTR
+   (and null-terminate it). *LINEPTR is a pointer returned from malloc (or
+   NULL), pointing to *N characters of space.  It is realloc'd as
+   necessary.  Returns the number of characters read (not including the
+   null delimiter), or -1 on error or EOF.  */
+size_t getdelim(char **linebuf, size_t *linebufsz, int delimiter, FILE *file)
+{
+	static const int GROWBY = 80; /* how large we will grow strings by */
+
+	int ch;
+	int idx = 0;
+
+	if (file == NULL || linebuf==NULL || *linebuf == NULL || linebufsz == NULL) {
+	    errno=EINVAL;
+	    return -1;
+	}
+
+	while (1) {
+		ch = fgetc(file);
+		if (ch == EOF)
+			break;
+		/* grow the line buffer as necessary */
+		while (idx > *linebufsz-2) {
+			*linebuf = realloc(*linebuf, *linebufsz += GROWBY);
+			if (!*linebuf) {
+				errno=ENOMEM;
+				return -1;
+			}
+		}
+		*linebuf[idx++] = (char)ch;
+		if ((char)ch == delimiter)
+			break;
+	}
+
+	if (idx != 0)
+	    *linebuf[idx] = 0;
+	return idx;
+}
+