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/*
* readfile.c - Read an entire file into a string.
*
* Arnold Robbins
* Tue Apr 23 17:43:30 IDT 2002
* Revised per Peter Tillier
* Mon Jun 9 17:05:11 IDT 2003
* Revised for new dynamic function facilities
* Mon Jun 14 14:53:07 IDT 2004
* Revised for formal API May 2012
*/
/*
* Copyright (C) 2002, 2003, 2004, 2011, 2012, 2013
* the Free Software Foundation, Inc.
*
* This file is part of GAWK, the GNU implementation of the
* AWK Programming Language.
*
* GAWK 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.
*
* GAWK 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _BSD_SOURCE
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "gawkapi.h"
#include "gettext.h"
#define _(msgid) gettext(msgid)
#define N_(msgid) msgid
#ifndef O_BINARY
#define O_BINARY 0
#endif
static const gawk_api_t *api; /* for convenience macros to work */
static awk_ext_id_t *ext_id;
static const char *ext_version = "readfile extension: version 1.0";
static awk_bool_t (*init_func)(void) = NULL;
int plugin_is_GPL_compatible;
/* do_readfile --- read a file into memory */
static awk_value_t *
do_readfile(int nargs, awk_value_t *result)
{
awk_value_t filename;
int ret;
struct stat sbuf;
char *text;
int fd;
assert(result != NULL);
make_null_string(result); /* default return value */
if (do_lint && nargs > 1)
lintwarn(ext_id, _("readfile: called with too many arguments"));
unset_ERRNO();
if (get_argument(0, AWK_STRING, &filename)) {
ret = stat(filename.str_value.str, & sbuf);
if (ret < 0) {
update_ERRNO_int(errno);
goto done;
} else if ((sbuf.st_mode & S_IFMT) != S_IFREG) {
errno = EINVAL;
update_ERRNO_int(errno);
goto done;
}
if ((fd = open(filename.str_value.str, O_RDONLY|O_BINARY)) < 0) {
update_ERRNO_int(errno);
goto done;
}
emalloc(text, char *, sbuf.st_size + 2, "do_readfile");
memset(text, '\0', sbuf.st_size + 2);
if ((ret = read(fd, text, sbuf.st_size)) != sbuf.st_size) {
(void) close(fd);
update_ERRNO_int(errno);
free(text);
goto done;
}
close(fd);
make_malloced_string(text, sbuf.st_size, result);
goto done;
} else if (do_lint)
lintwarn(ext_id, _("readfile: called with no arguments"));
done:
/* Set the return value */
return result;
}
static awk_ext_func_t func_table[] = {
{ "readfile", do_readfile, 1 },
};
/* define the dl_load function using the boilerplate macro */
dl_load_func(func_table, readfile, "")
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