Diff: ntopt.c

Revision:

0:7147d6024de8

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ntopt.c	Sun May 22 02:51:35 2011 +0000
@@ -0,0 +1,155 @@
+/**
+ * @file ntopt.c
+ * @author Shinichiro Nakamura
+ * @brief NT-Shell用オプション解析モジュールの実装。
+ */
+
+/*
+ * ===============================================================
+ *  Natural Tiny Shell (NT-Shell)
+ *  Version 0.0.6
+ * ===============================================================
+ * Copyright (c) 2010-2011 Shinichiro Nakamura
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ * ===============================================================
+ */
+
+#include "ntopt.h"
+
+#define IS_DELIM(c) \
+    (((c) == '\r') || ((c) == '\n') || ((c) == '\t') || ((c) == '\0') || ((c) == ' '))
+
+static int ntopt_get_count(const char *str);
+static char *ntopt_get_text(const char *str, const int n, char *buf, int siz);
+
+int ntopt_get_count(const char *str)
+{
+    int cnt = 0;
+    int wc = 0;
+    char *p = (char *)str;
+    while (*p) {
+        if (!IS_DELIM(*p)) {
+            wc++;
+            if (wc == 1) {
+                cnt++;
+            }
+        } else {
+            wc = 0;
+        }
+        p++;
+    }
+    return cnt;
+}
+
+char *ntopt_get_text(const char *str, const int n, char *buf, int siz)
+{
+    int cnt = 0;
+    int wc = 0;
+    char *p = (char *)str;
+    while (*p) {
+        if (!IS_DELIM(*p)) {
+            wc++;
+            if ((wc == 1)) {
+                if (cnt == n) {
+                    char *des = buf;
+                    int cc = 0;
+                    while (!IS_DELIM(*p)) {
+                        cc++;
+                        if (siz <= cc) {
+                            break;
+                        }
+                        *des = *p;
+                        des++;
+                        p++;
+                    }
+                    *des = '\0';
+                    return buf;
+                }
+                cnt++;
+            }
+        } else {
+            wc = 0;
+        }
+        p++;
+    }
+    return '\0';
+}
+
+int ntopt_parse(const char *str, void (*func)(int argc, char **argv))
+{
+    int argc;
+    char argv[NTOPT_MAXCNT_ARGC][NTOPT_MAXLEN_ARGV];
+    char *argvp[NTOPT_MAXCNT_ARGC];
+    int i;
+
+    argc = ntopt_get_count(str);
+    if (NTOPT_MAXCNT_ARGC <= argc) {
+        return -1;
+    }
+
+    for (i = 0; i < argc; i++) {
+        argvp[i] = ntopt_get_text(str, i, argv[i], sizeof(argv[i]));
+    }
+    func(argc, &argvp[0]);
+
+    return argc;
+}
+
+#if 0
+#include <stdio.h>
+void callback(int argc, char **argv)
+{
+    int i;
+    for (i = 0; i < argc; i++) {
+        printf("%d: %s\n", i, argv[i]);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    char *str1 = "  This is a test.\n   ";
+    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.";
+    int i;
+    int n1, n2;
+
+    n1 = ntopt_get_count(str1);
+    for (i = 0; i < n1; i++) {
+        char buf[64];
+        printf("%d: %s\n", i, ntopt_get_text(str1, i, buf, sizeof(buf)));
+    }
+    printf("\n");
+
+    n2 = ntopt_get_count(str2);
+    for (i = 0; i < n2; i++) {
+        char buf[64];
+        printf("%d: %s\n", i, ntopt_get_text(str2, i, buf, sizeof(buf)));
+    }
+    printf("\n");
+
+    ntopt_parse(str1, callback);
+    ntopt_parse(str2, callback);
+
+    return 0;
+}
+#endif
+