1 files changed, 67 insertions, 0 deletions

diff --git a/busybox/libbb/fgets_str.c b/busybox/libbb/fgets_str.c
new file mode 100644
index 000000000..bf828be95
--- /dev/null
+++ b/busybox/libbb/fgets_str.c
@@ -0,0 +1,67 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) many different people.
+ * If you wrote this, please acknowledge your work.
+ *
+ * This program 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 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 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "libbb.h"
+
+/* Read up to (and including) TERMINATING_STRING from FILE and return it.
+ * Return NULL on EOF.  */
+
+char *fgets_str(FILE *file, const char *terminating_string)
+{
+        char *linebuf = NULL;
+        const int term_length = strlen(terminating_string);
+        int end_string_offset;
+        int linebufsz = 0;
+        int idx = 0;
+        int ch;
+
+        while (1) {
+                ch = fgetc(file);
+                if (ch == EOF) {
+                        free(linebuf);
+                        return NULL;
+                }
+
+                /* grow the line buffer as necessary */
+                while (idx > linebufsz - 2) {
+                        linebuf = xrealloc(linebuf, linebufsz += 1000);
+                }
+
+                linebuf[idx] = ch;
+                idx++;
+
+                /* Check for terminating string */
+                end_string_offset = idx - term_length;
+                if ((end_string_offset > 0) && (memcmp(&linebuf[end_string_offset], terminating_string, term_length) == 0)) {
+                        idx -= term_length;
+                        break;
+                }
+        }
+        linebuf[idx] = '\0';
+        return(linebuf);
+}
+