--- /dev/null
+/* read-file.c -- read file contents into a string
+ Copyright (C) 2006 Free Software Foundation, Inc.
+ Written by Simon Josefsson and Bruno Haible.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "read-file.h"
+
+/* Get realloc, free. */
+#include <stdlib.h>
+
+/* Get errno. */
+#include <errno.h>
+
+/* Read a STREAM and return a newly allocated string with the content,
+ and set *LENGTH to the length of the string. The string is
+ zero-terminated, but the terminating zero byte is not counted in
+ *LENGTH. On errors, *LENGTH is undefined, errno preserves the
+ values set by system functions (if any), and NULL is returned. */
+char *
+fread_file (FILE * stream, size_t * length)
+{
+ char *buf = NULL;
+ size_t alloc = 0;
+ size_t size = 0;
+
+ while (!feof (stream))
+ {
+ size_t count;
+
+ if (size + BUFSIZ + 1 > alloc)
+ {
+ char *new_buf;
+
+ alloc += alloc / 2;
+ if (alloc < size + BUFSIZ + 1)
+ alloc = size + BUFSIZ + 1;
+
+ new_buf = realloc (buf, alloc);
+ if (!new_buf)
+ {
+ int save_errno = errno;
+ free (buf);
+ errno = save_errno;
+ return NULL;
+ }
+
+ buf = new_buf;
+ }
+
+ count = fread (buf + size, 1, alloc - size - 1, stream);
+ size += count;
+
+ if (ferror (stream))
+ {
+ int save_errno = errno;
+ free (buf);
+ errno = save_errno;
+ return NULL;
+ }
+ }
+
+ if (buf)
+ buf[size] = '\0';
+
+ *length = size;
+
+ return buf;
+}
+
+static char *
+internal_read_file (const char *filename, size_t * length, const char *mode)
+{
+ FILE *stream = fopen (filename, mode);
+ char *out;
+ int rc;
+
+ if (!stream)
+ return NULL;
+
+ out = fread_file (stream, length);
+
+ if (out)
+ rc = fclose (stream);
+ else
+ {
+ /* On failure, preserve the original errno value. */
+ int save_errno = errno;
+ rc = fclose (stream);
+ errno = save_errno;
+ }
+
+ if (rc != 0)
+ {
+ int save_errno = errno;
+ free (out);
+ errno = save_errno;
+ return NULL;
+ }
+
+ return out;
+}
+
+/* Open and read the contents of FILENAME, and return a newly
+ allocated string with the content, and set *LENGTH to the length of
+ the string. The string is zero-terminated, but the terminating
+ zero byte is not counted in *LENGTH. On errors, *LENGTH is
+ undefined, errno preserves the values set by system functions (if
+ any), and NULL is returned. */
+char *
+read_file (const char *filename, size_t * length)
+{
+ return internal_read_file (filename, length, "r");
+}
+
+/* Open (on non-POSIX systems, in binary mode) and read the contents
+ of FILENAME, and return a newly allocated string with the content,
+ and set LENGTH to the length of the string. The string is
+ zero-terminated, but the terminating zero byte is not counted in
+ the LENGTH variable. On errors, *LENGTH is undefined, errno
+ preserves the values set by system functions (if any), and NULL is
+ returned. */
+char *
+read_binary_file (const char *filename, size_t * length)
+{
+ return internal_read_file (filename, length, "rb");
+}
--- /dev/null
+/* read-file.h -- read file contents into a string
+ Copyright (C) 2006 Free Software Foundation, Inc.
+ Written by Simon Josefsson.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1, 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+
+#ifndef READ_FILE_H
+#define READ_FILE_H
+
+/* Get size_t. */
+#include <stddef.h>
+
+/* Get FILE. */
+#include <stdio.h>
+
+extern char *fread_file (FILE * stream, size_t * length);
+
+extern char *read_file (const char *filename, size_t * length);
+
+extern char *read_binary_file (const char *filename, size_t * length);
+
+#endif /* READ_FILE_H */
projects / thirdparty / gnutls.git / commitdiff
