librazor/test-lua.c
author J. Ali Harlow <ali@juiblex.co.uk>
Sat Oct 04 18:12:58 2014 +0100 (2014-10-04)
changeset 454 56ff755c268c
parent 378 ee438b1e94c0
child 455 df914f383f5c
permissions -rw-r--r--
Only export symbols starting with razor_ in dynamic library.

Apart from being good practice to avoid clashes with higher-level
libraries and the application, this also fixes an obscure bug: The
gnulib library is used both by librazor (the dynamic library) and
by razor (the executable). In doing so, we want to have two separate
copies of the library despite the code duplication this involves.
Without the explicit limit to export only razor_ symbols, the razor
executable under mingw64 was picking up the getopt_long function
from librazor and the optind variable from libgnu which meant that
it did not see optind changing. Hiding librazor's copy of getopt
causes the linker to find libgnu's copy and everything works.

Note that under mingw librazor-#.dll still contains undocumented
(private) razor_ symbols but these will do no harm as long as nobody
tries to use them.
     1 /*
     2  * Copyright (C) 2009  J. Ali Harlow <ali@juiblex.co.uk>
     3  *
     4  * This program is free software; you can redistribute it and/or modify
     5  * it under the terms of the GNU General Public License as published by
     6  * the Free Software Foundation; either version 2 of the License, or
     7  * (at your option) any later version.
     8  *
     9  * This program is distributed in the hope that it will be useful,
    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12  * GNU General Public License for more details.
    13  *
    14  * You should have received a copy of the GNU General Public License along
    15  * with this program; if not, write to the Free Software Foundation, Inc.,
    16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
    17  */
    18 
    19 #include "config.h"
    20 
    21 #include <stdlib.h>
    22 #include <stdio.h>
    23 #include <string.h>
    24 #include <errno.h>
    25 #include <sys/types.h>
    26 #include <sys/stat.h>
    27 #include <dirent.h>
    28 #include <unistd.h>
    29 #include <math.h>
    30 #include "razor-internal.h"
    31 
    32 /*
    33  * This kludge is to work around an apparent bug in Fedora 10's lua package
    34  * (it appears to require libm but not to include a DT_NEEDED).
    35  */
    36 
    37 void (*kludge)() = (void (*)())sin;
    38 
    39 static void recursive_remove(const char *directory)
    40 {
    41 	DIR *dp;
    42 	struct dirent *dirp;
    43 	char *buf;
    44 
    45 	dp = opendir(directory);
    46 	while((dirp = readdir(dp))) {
    47 		if (strcmp(dirp->d_name, ".") && strcmp(dirp->d_name, "..")) {
    48 			buf = malloc(strlen(directory) + strlen(dirp->d_name)
    49 				     + 2);
    50 			sprintf(buf, "%s/%s", directory, dirp->d_name);
    51 			if (remove(buf) < 0)
    52 				recursive_remove(buf);
    53 			free(buf);
    54 		}
    55 	}
    56 
    57 	rmdir(directory);
    58 }
    59 
    60 int main(int argc, char *argv[])
    61 {
    62 	char root[] = "/tmp/razor.XXXXXX";
    63 	int r;
    64 	void *script;
    65 	size_t len;
    66 	char *s, *test_file, *srcdir;
    67 	FILE *fp;
    68 	struct razor_error *error = NULL;
    69 
    70 	if (argc > 2) {
    71 		fprintf(stderr, "usage: %s [TESTS-FILE]\n", argv[0]);
    72 		exit(1);
    73 	}
    74 	if (argc == 2)
    75 		test_file = argv[1];
    76 	else
    77 		test_file = "test.lua";
    78 
    79 	if (!mkdtemp(root)) {
    80 		perror(root);
    81 		exit(1);
    82 	}
    83 
    84 	s = malloc(strlen(root) + strlen("/testfile") + 1);
    85 	strcpy(s, root);
    86 	strcat(s, "/testfile");
    87 	fp = fopen(s, "w");
    88 	if (!fp) {
    89 		perror(s);
    90 		exit(1);
    91 	}
    92 	fprintf(fp, "#!" LUA_BINARY "\n"
    93 	  "print('Abracadabra!')\n");
    94 	fchmod(fileno(fp), S_IRUSR | S_IWUSR | S_IXUSR);
    95 	fclose(fp);
    96 	free(s);
    97 
    98 	script = razor_file_get_contents(test_file, &len, 0, &error);
    99 	if (!script) {
   100 		srcdir = getenv("srcdir");
   101 		if (srcdir && errno == ENOENT && *test_file != '/') {
   102 			razor_error_free(error);
   103 			s = malloc(strlen(srcdir) + strlen(test_file) + 2);
   104 			strcpy(s, srcdir);
   105 			strcat(s, "/");
   106 			strcat(s, test_file);
   107 			script = razor_file_get_contents(s, &len, 0, &error);
   108 			if (!script) {
   109 				fprintf(stderr, "%s\n",
   110 					razor_error_get_msg(error));
   111 				razor_error_free(error);
   112 				exit(1);
   113 			}
   114 			free(s);
   115 		} else {
   116 			fprintf(stderr, "%s\n", razor_error_get_msg(error));
   117 			razor_error_free(error);
   118 			exit(1);
   119 		}
   120 	}
   121 	r = run_lua_script(root, test_file, script, len, -1);
   122 	razor_file_free_contents(script, len);
   123 
   124 	recursive_remove(root);
   125 	exit(r ? 1 : 0);
   126 }