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author | px4dev <px4@purgatory.org> | 2012-08-04 15:12:36 -0700 |
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committer | px4dev <px4@purgatory.org> | 2012-08-04 15:12:36 -0700 |
commit | 8a365179eafdf3aea98e60ab9f5882b200d4c759 (patch) | |
tree | 4f38d6d4cd80bd0b6e22e2bb534c3f117ce44e56 /apps/nshlib/nsh_test.c | |
download | px4-firmware-8a365179eafdf3aea98e60ab9f5882b200d4c759.tar.gz px4-firmware-8a365179eafdf3aea98e60ab9f5882b200d4c759.tar.bz2 px4-firmware-8a365179eafdf3aea98e60ab9f5882b200d4c759.zip |
Fresh import of the PX4 firmware sources.
Diffstat (limited to 'apps/nshlib/nsh_test.c')
-rw-r--r-- | apps/nshlib/nsh_test.c | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/apps/nshlib/nsh_test.c b/apps/nshlib/nsh_test.c new file mode 100644 index 000000000..6e1b65e5f --- /dev/null +++ b/apps/nshlib/nsh_test.c @@ -0,0 +1,438 @@ +/**************************************************************************** + * apps/nshlib/nsh_test.c + * + * Copyright (C) 2008, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/* Test syntax: + * + * expression = simple-expression | !expression | + * expression -o expression | expression -a expression + * + * simple-expression = unary-expression | binary-expression + * + * unary-expression = string-unary | file-unary + * + * string-unary = -n string | -z string + * + * file-unary = -b file | -c file | -d file | -e file | -f file | + * -r file | -s file | -w file + * + * binary-expression = string-binary | numeric-binary + * + * string-binary = string = string | string == string | string != string + * + * numeric-binary = integer -eq integer | integer -ge integer | + * integer -gt integer | integer -le integer | + * integer -lt integer | integer -ne integer + * + * Note that the smallest expression consists of two strings. + */ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <sys/stat.h> +#include <stdlib.h> +#include <string.h> + +#include "nsh.h" +#include "nsh_console.h" + +#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_TEST) + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +#define TEST_TRUE OK +#define TEST_FALSE ERROR +#define TEST_ERROR 1 + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: binaryexpression + ****************************************************************************/ + +static inline int binaryexpression(FAR struct nsh_vtbl_s *vtbl, char **argv) +{ + char *endptr; + long integer1; + long integer2; + + /* STRING2 = STRING2 */ + + if (strcmp(argv[1], "=") == 0 || strcmp(argv[1], "==") == 0) + { + /* Return true if the strings are identical */ + + return strcmp(argv[0], argv[2]) == 0 ? TEST_TRUE : TEST_FALSE; + } + + /* STRING1 != STRING2 */ + + if (strcmp(argv[1], "!=") == 0) + { + /* Return true if the strings are different */ + + return strcmp(argv[0], argv[2]) != 0 ? TEST_TRUE : TEST_FALSE; + } + + /* The remaining operators assuming that the two values are integers */ + + integer1 = strtol(argv[0], &endptr, 0); + if (argv[0][0] == '\0' || *endptr != '\0') + { + return TEST_ERROR; + } + + integer2 = strtol(argv[2], &endptr, 0); + if (argv[2][0] == '\0' || *endptr != '\0') + { + return TEST_ERROR; + } + + /* INTEGER1 -eq INTEGER2 */ + + if (strcmp(argv[1], "-eq") == 0) + { + /* Return true if the strings are different */ + + return integer1 == integer2 ? TEST_TRUE : TEST_FALSE; + } + + /* INTEGER1 -ge INTEGER2 */ + + if (strcmp(argv[1], "-ge") == 0) + { + /* Return true if the strings are different */ + + return integer1 >= integer2 ? TEST_TRUE : TEST_FALSE; + } + + /* INTEGER1 -gt INTEGER2 */ + + if (strcmp(argv[1], "-gt") == 0) + { + /* Return true if the strings are different */ + + return integer1 > integer2 ? TEST_TRUE : TEST_FALSE; + } + + /* INTEGER1 -le INTEGER2 */ + + if (strcmp(argv[1], "-le") == 0) + { + /* Return true if the strings are different */ + + return integer1 <= integer2 ? TEST_TRUE : TEST_FALSE; + } + + /* INTEGER1 -lt INTEGER2 */ + + if (strcmp(argv[1], "-lt") == 0) + { + /* Return true if the strings are different */ + + return integer1 < integer2 ? TEST_TRUE : TEST_FALSE; + } + + /* INTEGER1 -ne INTEGER2 */ + + if (strcmp(argv[1], "-ne") == 0) + { + /* Return true if the strings are different */ + + return integer1 != integer2 ? TEST_TRUE : TEST_FALSE; + } + + return TEST_ERROR; +} + +/**************************************************************************** + * Name: unaryexpression + ****************************************************************************/ + +static inline int unaryexpression(FAR struct nsh_vtbl_s *vtbl, char **argv) +{ + struct stat buf; + char *fullpath; + int ret; + + /* -n STRING */ + + if (strcmp(argv[0], "-n") == 0) + { + /* Return true if the length of the string is non-zero */ + + return strlen(argv[1]) != 0 ? TEST_TRUE : TEST_FALSE; + } + + /* -z STRING */ + + if (strcmp(argv[0], "-z") == 0) + { + /* Return true if the length of the string is zero */ + + return strlen(argv[1]) == 0 ? TEST_TRUE : TEST_FALSE; + } + + /* All of the remaining assume that the following argument is the + * path to a file. + */ + + fullpath = nsh_getfullpath(vtbl, argv[1]); + if (!fullpath) + { + return TEST_FALSE; + } + + ret = stat(fullpath, &buf); + nsh_freefullpath(fullpath); + + if (ret != 0) + { + /* The file does not exist (or another error occurred) -- return FALSE */ + + return TEST_FALSE; + } + + /* -b FILE */ + + if (strcmp(argv[0], "-b") == 0) + { + /* Return true if the path is a block device */ + + return S_ISBLK(buf.st_mode) ? TEST_TRUE : TEST_FALSE; + } + + /* -c FILE */ + + if (strcmp(argv[0], "-c") == 0) + { + /* Return true if the path is a character device */ + + return S_ISCHR(buf.st_mode) ? TEST_TRUE : TEST_FALSE; + } + + /* -d FILE */ + + if (strcmp(argv[0], "-d") == 0) + { + /* Return true if the path is a directory */ + + return S_ISDIR(buf.st_mode) ? TEST_TRUE : TEST_FALSE; + } + + /* -e FILE */ + + if (strcmp(argv[0], "-e") == 0) + { + /* Return true if the file exists */ + + return TEST_TRUE; + } + + /* -f FILE */ + + if (strcmp(argv[0], "-f") == 0) + { + /* Return true if the path refers to a regular file */ + + return S_ISREG(buf.st_mode) ? TEST_TRUE : TEST_FALSE; + } + + /* -r FILE */ + + if (strcmp(argv[0], "-r") == 0) + { + /* Return true if the file is readable */ + + return (buf.st_mode & (S_IRUSR|S_IRGRP|S_IROTH)) != 0 ? TEST_TRUE : TEST_FALSE; + } + + /* -s FILE */ + + if (strcmp(argv[0], "-s") == 0) + { + /* Return true if the size of the file is greater than zero */ + + return buf.st_size > 0 ? TEST_TRUE : TEST_FALSE; + } + + /* -w FILE */ + + if (strcmp(argv[0], "-w") == 0) + { + /* Return true if the file is write-able */ + + return (buf.st_mode & (S_IWUSR|S_IWGRP|S_IWOTH)) != 0 ? TEST_TRUE : TEST_FALSE; + } + + /* Unrecognized operator */ + + return TEST_ERROR; +} + +/**************************************************************************** + * Name: expression + ****************************************************************************/ + +static int expression(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) +{ + int value; + int i = 0; + + /* Check for unary operations on expressions */ + + if (strcmp(argv[0], "!") == 0) + { + if (argc < 2) + { + goto errout_syntax; + } + return expression(vtbl, argc-1, &argv[1]) == TEST_TRUE ? TEST_FALSE : TEST_TRUE; + } + + /* Check for unary operations on simple, typed arguments */ + + else if (argv[0][0] == '-') + { + if (argc < 2) + { + goto errout_syntax; + } + i += 2; + value = unaryexpression(vtbl, argv); + } + + /* Check for binary operations on simple, typed arguments */ + + else + { + if (argc < 3) + { + goto errout_syntax; + } + i += 3; + value = binaryexpression(vtbl, argv); + } + + /* Test if there any failure */ + + if (value == TEST_ERROR) + { + goto errout_syntax; + } + + /* Is there anything after the simple expression? */ + + if (i < argc) + { + /* EXPRESSION -a EXPRESSION */ + + if (strcmp(argv[i], "-a") == 0) + { + if (value != TEST_TRUE) + { + return TEST_FALSE; + } + else + { + i++; + return expression(vtbl, argc-i, &argv[i]); + } + } + + /* EXPRESSION -o EXPRESSION */ + + else if (strcmp(argv[i], "-o") == 0) + { + if (value == TEST_TRUE) + { + return TEST_TRUE; + } + else + { + i++; + return expression(vtbl, argc-i, &argv[i]); + } + } + else + { + goto errout_syntax; + } + } + return value; + +errout_syntax: + nsh_output(vtbl, g_nshsyntax, "test"); + return TEST_FALSE; +} + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: cmd_test + ****************************************************************************/ + +int cmd_test(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) +{ + return expression(vtbl, argc-1, &argv[1]); +} + +/**************************************************************************** + * Name: cmd_lbracket + ****************************************************************************/ + +int cmd_lbracket(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) +{ + if (strcmp(argv[argc-1], "]") != 0) + { + nsh_output(vtbl, g_nshsyntax, argv[0]); + return ERROR; + } + else + { + return expression(vtbl, argc-2, &argv[1]); + } +} + +#endif /* !CONFIG_NSH_DISABLESCRIPT && !CONFIG_NSH_DISABLE_TEST */ |