Merge tag 'debian/1.8.5p2-1' into squeeze

[debian/sudo] / compat / getline.c

diff --git a/compat/getline.c b/compat/getline.c
new file mode 100644 (file)
index 0000000..606fd0e
--- /dev/null
+++ b/compat/getline.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2009-2010 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# ifdef HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif /* STDC_HEADERS */
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif /* HAVE_STRING_H */
+#ifdef HAVE_STRINGS_H
+# include <strings.h>
+#endif /* HAVE_STRINGS_H */
+#include <limits.h>
+
+#include "missing.h"
+
+#ifndef LINE_MAX
+# define LINE_MAX 2048
+#endif
+
+#ifdef HAVE_FGETLN
+ssize_t
+getline(char **bufp, size_t *bufsizep, FILE *fp)
+{
+    char *buf, *cp;
+    size_t bufsize;
+    size_t len;
+
+    buf = fgetln(fp, &len);
+    if (buf) {
+       bufsize = *bufp ? *bufsizep : 0;
+       if (bufsize < len + 1) {
+           bufsize = len + 1;
+           cp = *bufp ? realloc(*bufp, bufsize) : malloc(bufsize);
+           if (cp == NULL)
+               return -1;
+           *bufp = cp;
+           *bufsizep = bufsize;
+       }
+       memcpy(*bufp, buf, len);
+       (*bufp)[len] = '\0';
+    }
+    return buf ? len : -1;
+}
+#else
+ssize_t
+getline(char **bufp, size_t *bufsizep, FILE *fp)
+{
+    char *buf, *cp;
+    size_t bufsize;
+    ssize_t len = 0;
+
+    buf = *bufp;
+    bufsize = *bufsizep;
+    if (buf == NULL || bufsize == 0) {
+       bufsize = LINE_MAX;
+       cp = buf ? realloc(buf, bufsize) : malloc(bufsize);
+       if (cp == NULL)
+           return -1;
+       buf = cp;
+    }
+
+    for (;;) {
+       if (fgets(buf + len, bufsize - len, fp) == NULL) {
+           len = -1;
+           break;
+       }
+       len = strlen(buf);
+       if (!len || buf[len - 1] == '\n' || feof(fp))
+           break;
+       bufsize *= 2;
+       cp = realloc(buf, bufsize);
+       if (cp == NULL)
+           return -1;
+       buf = cp;
+    }
+    *bufp = buf;
+    *bufsizep = bufsize;
+    return len;
+}
+#endif