Shinichiro Nakamura / NaturalTinyShell

Natural Tiny Shell (NT-Shell) library is a tiny shell library for a small embedded system. The interface is really simple. You should only know ntshell_execute in ntshell.h. So you can port it to any embedded system easily. Please enjoy your small embedded system with it. :)

Dependents:   NaturalTinyShell_TestProgram

ntopt.c@0:7147d6024de8, 2011-05-22 (annotated)

Committer:
shintamainjp
Date:
Sun May 22 02:51:35 2011 +0000
Revision:
0:7147d6024de8
Initial version.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
shintamainjp 0:7147d6024de8 1 /**
shintamainjp 0:7147d6024de8 2 * @file ntopt.c
shintamainjp 0:7147d6024de8 3 * @author Shinichiro Nakamura
shintamainjp 0:7147d6024de8 4 * @brief NT-Shell用オプション解析モジュールの実装。
shintamainjp 0:7147d6024de8 5 */
shintamainjp 0:7147d6024de8 6
shintamainjp 0:7147d6024de8 7 /*
shintamainjp 0:7147d6024de8 8 * ===============================================================
shintamainjp 0:7147d6024de8 9 * Natural Tiny Shell (NT-Shell)
shintamainjp 0:7147d6024de8 10 * Version 0.0.6
shintamainjp 0:7147d6024de8 11 * ===============================================================
shintamainjp 0:7147d6024de8 12 * Copyright (c) 2010-2011 Shinichiro Nakamura
shintamainjp 0:7147d6024de8 13 *
shintamainjp 0:7147d6024de8 14 * Permission is hereby granted, free of charge, to any person
shintamainjp 0:7147d6024de8 15 * obtaining a copy of this software and associated documentation
shintamainjp 0:7147d6024de8 16 * files (the "Software"), to deal in the Software without
shintamainjp 0:7147d6024de8 17 * restriction, including without limitation the rights to use,
shintamainjp 0:7147d6024de8 18 * copy, modify, merge, publish, distribute, sublicense, and/or
shintamainjp 0:7147d6024de8 19 * sell copies of the Software, and to permit persons to whom the
shintamainjp 0:7147d6024de8 20 * Software is furnished to do so, subject to the following
shintamainjp 0:7147d6024de8 21 * conditions:
shintamainjp 0:7147d6024de8 22 *
shintamainjp 0:7147d6024de8 23 * The above copyright notice and this permission notice shall be
shintamainjp 0:7147d6024de8 24 * included in all copies or substantial portions of the Software.
shintamainjp 0:7147d6024de8 25 *
shintamainjp 0:7147d6024de8 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
shintamainjp 0:7147d6024de8 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
shintamainjp 0:7147d6024de8 28 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
shintamainjp 0:7147d6024de8 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
shintamainjp 0:7147d6024de8 30 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
shintamainjp 0:7147d6024de8 31 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
shintamainjp 0:7147d6024de8 32 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
shintamainjp 0:7147d6024de8 33 * OTHER DEALINGS IN THE SOFTWARE.
shintamainjp 0:7147d6024de8 34 * ===============================================================
shintamainjp 0:7147d6024de8 35 */
shintamainjp 0:7147d6024de8 36
shintamainjp 0:7147d6024de8 37 #include "ntopt.h"
shintamainjp 0:7147d6024de8 38
shintamainjp 0:7147d6024de8 39 #define IS_DELIM(c) \
shintamainjp 0:7147d6024de8 40 (((c) == '\r') || ((c) == '\n') || ((c) == '\t') || ((c) == '\0') || ((c) == ' '))
shintamainjp 0:7147d6024de8 41
shintamainjp 0:7147d6024de8 42 static int ntopt_get_count(const char *str);
shintamainjp 0:7147d6024de8 43 static char *ntopt_get_text(const char *str, const int n, char *buf, int siz);
shintamainjp 0:7147d6024de8 44
shintamainjp 0:7147d6024de8 45 int ntopt_get_count(const char *str)
shintamainjp 0:7147d6024de8 46 {
shintamainjp 0:7147d6024de8 47 int cnt = 0;
shintamainjp 0:7147d6024de8 48 int wc = 0;
shintamainjp 0:7147d6024de8 49 char *p = (char *)str;
shintamainjp 0:7147d6024de8 50 while (*p) {
shintamainjp 0:7147d6024de8 51 if (!IS_DELIM(*p)) {
shintamainjp 0:7147d6024de8 52 wc++;
shintamainjp 0:7147d6024de8 53 if (wc == 1) {
shintamainjp 0:7147d6024de8 54 cnt++;
shintamainjp 0:7147d6024de8 55 }
shintamainjp 0:7147d6024de8 56 } else {
shintamainjp 0:7147d6024de8 57 wc = 0;
shintamainjp 0:7147d6024de8 58 }
shintamainjp 0:7147d6024de8 59 p++;
shintamainjp 0:7147d6024de8 60 }
shintamainjp 0:7147d6024de8 61 return cnt;
shintamainjp 0:7147d6024de8 62 }
shintamainjp 0:7147d6024de8 63
shintamainjp 0:7147d6024de8 64 char *ntopt_get_text(const char *str, const int n, char *buf, int siz)
shintamainjp 0:7147d6024de8 65 {
shintamainjp 0:7147d6024de8 66 int cnt = 0;
shintamainjp 0:7147d6024de8 67 int wc = 0;
shintamainjp 0:7147d6024de8 68 char *p = (char *)str;
shintamainjp 0:7147d6024de8 69 while (*p) {
shintamainjp 0:7147d6024de8 70 if (!IS_DELIM(*p)) {
shintamainjp 0:7147d6024de8 71 wc++;
shintamainjp 0:7147d6024de8 72 if ((wc == 1)) {
shintamainjp 0:7147d6024de8 73 if (cnt == n) {
shintamainjp 0:7147d6024de8 74 char *des = buf;
shintamainjp 0:7147d6024de8 75 int cc = 0;
shintamainjp 0:7147d6024de8 76 while (!IS_DELIM(*p)) {
shintamainjp 0:7147d6024de8 77 cc++;
shintamainjp 0:7147d6024de8 78 if (siz <= cc) {
shintamainjp 0:7147d6024de8 79 break;
shintamainjp 0:7147d6024de8 80 }
shintamainjp 0:7147d6024de8 81 *des = *p;
shintamainjp 0:7147d6024de8 82 des++;
shintamainjp 0:7147d6024de8 83 p++;
shintamainjp 0:7147d6024de8 84 }
shintamainjp 0:7147d6024de8 85 *des = '\0';
shintamainjp 0:7147d6024de8 86 return buf;
shintamainjp 0:7147d6024de8 87 }
shintamainjp 0:7147d6024de8 88 cnt++;
shintamainjp 0:7147d6024de8 89 }
shintamainjp 0:7147d6024de8 90 } else {
shintamainjp 0:7147d6024de8 91 wc = 0;
shintamainjp 0:7147d6024de8 92 }
shintamainjp 0:7147d6024de8 93 p++;
shintamainjp 0:7147d6024de8 94 }
shintamainjp 0:7147d6024de8 95 return '\0';
shintamainjp 0:7147d6024de8 96 }
shintamainjp 0:7147d6024de8 97
shintamainjp 0:7147d6024de8 98 int ntopt_parse(const char *str, void (*func)(int argc, char **argv))
shintamainjp 0:7147d6024de8 99 {
shintamainjp 0:7147d6024de8 100 int argc;
shintamainjp 0:7147d6024de8 101 char argv[NTOPT_MAXCNT_ARGC][NTOPT_MAXLEN_ARGV];
shintamainjp 0:7147d6024de8 102 char *argvp[NTOPT_MAXCNT_ARGC];
shintamainjp 0:7147d6024de8 103 int i;
shintamainjp 0:7147d6024de8 104
shintamainjp 0:7147d6024de8 105 argc = ntopt_get_count(str);
shintamainjp 0:7147d6024de8 106 if (NTOPT_MAXCNT_ARGC <= argc) {
shintamainjp 0:7147d6024de8 107 return -1;
shintamainjp 0:7147d6024de8 108 }
shintamainjp 0:7147d6024de8 109
shintamainjp 0:7147d6024de8 110 for (i = 0; i < argc; i++) {
shintamainjp 0:7147d6024de8 111 argvp[i] = ntopt_get_text(str, i, argv[i], sizeof(argv[i]));
shintamainjp 0:7147d6024de8 112 }
shintamainjp 0:7147d6024de8 113 func(argc, &argvp[0]);
shintamainjp 0:7147d6024de8 114
shintamainjp 0:7147d6024de8 115 return argc;
shintamainjp 0:7147d6024de8 116 }
shintamainjp 0:7147d6024de8 117
shintamainjp 0:7147d6024de8 118 #if 0
shintamainjp 0:7147d6024de8 119 #include <stdio.h>
shintamainjp 0:7147d6024de8 120 void callback(int argc, char **argv)
shintamainjp 0:7147d6024de8 121 {
shintamainjp 0:7147d6024de8 122 int i;
shintamainjp 0:7147d6024de8 123 for (i = 0; i < argc; i++) {
shintamainjp 0:7147d6024de8 124 printf("%d: %s\n", i, argv[i]);
shintamainjp 0:7147d6024de8 125 }
shintamainjp 0:7147d6024de8 126 }
shintamainjp 0:7147d6024de8 127
shintamainjp 0:7147d6024de8 128 int main(int argc, char **argv)
shintamainjp 0:7147d6024de8 129 {
shintamainjp 0:7147d6024de8 130 char *str1 = " This is a test.\n ";
shintamainjp 0:7147d6024de8 131 char *str2 = "This is a test.\t \r \n \t It's good for you. \n \n The important thing is LIFE-IS-SO-MUCH-BEAUTIFUL.";
shintamainjp 0:7147d6024de8 132 int i;
shintamainjp 0:7147d6024de8 133 int n1, n2;
shintamainjp 0:7147d6024de8 134
shintamainjp 0:7147d6024de8 135 n1 = ntopt_get_count(str1);
shintamainjp 0:7147d6024de8 136 for (i = 0; i < n1; i++) {
shintamainjp 0:7147d6024de8 137 char buf[64];
shintamainjp 0:7147d6024de8 138 printf("%d: %s\n", i, ntopt_get_text(str1, i, buf, sizeof(buf)));
shintamainjp 0:7147d6024de8 139 }
shintamainjp 0:7147d6024de8 140 printf("\n");
shintamainjp 0:7147d6024de8 141
shintamainjp 0:7147d6024de8 142 n2 = ntopt_get_count(str2);
shintamainjp 0:7147d6024de8 143 for (i = 0; i < n2; i++) {
shintamainjp 0:7147d6024de8 144 char buf[64];
shintamainjp 0:7147d6024de8 145 printf("%d: %s\n", i, ntopt_get_text(str2, i, buf, sizeof(buf)));
shintamainjp 0:7147d6024de8 146 }
shintamainjp 0:7147d6024de8 147 printf("\n");
shintamainjp 0:7147d6024de8 148
shintamainjp 0:7147d6024de8 149 ntopt_parse(str1, callback);
shintamainjp 0:7147d6024de8 150 ntopt_parse(str2, callback);
shintamainjp 0:7147d6024de8 151
shintamainjp 0:7147d6024de8 152 return 0;
shintamainjp 0:7147d6024de8 153 }
shintamainjp 0:7147d6024de8 154 #endif
shintamainjp 0:7147d6024de8 155