Standardize the string functions and search for them properly when configuring on different OSs.

1 files changed, 181 insertions, 0 deletions

diff --git a/common/compat.c b/common/compat.c
new file mode 100644
index 0000000..9d2f53f
--- /dev/null
+++ b/common/compat.c
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2004, Nate Nielsen
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *     * Redistributions of source code must retain the above
+ *       copyright notice, this list of conditions and the
+ *       following disclaimer.
+ *     * 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.
+ *     * The names of contributors to this software may not 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.
+ *
+ *
+ * CONTRIBUTORS
+ *  Nate Nielsen <nielsen@memberwebs.com>
+ *
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <syslog.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <strings.h>
+
+#include "usuals.h"
+#include "compat.h"
+
+#ifndef HAVE_STRCLN
+
+void
+strcln(char* data, char ch)
+{
+    char* p;
+    for(p = data; *data; data++, p++)
+    {
+        while(*data == ch)
+            data++;
+        *p = *data;
+    }
+
+    /* Renull terminate */
+    *p = 0;
+}
+
+#endif /* HAVE_STRCLN */
+
+#ifndef HAVE_STRBTRIM
+
+char*
+strbtrim(const char* data)
+{
+    while(*data && isspace(*data))
+        ++data;
+    return (char*)data;
+}
+
+#endif /* HAVE_STRBTRIM */
+
+#ifndef HAVE_STRETRIM
+
+void
+stretrim(char* data)
+{
+    char* t = data + strlen(data);
+    while(t > data && isspace(*(t - 1)))
+    {
+        t--;
+        *t = 0;
+    }
+}
+
+#endif /* HAVE_STRETRIM */
+
+#ifndef HAVE_STRTRIM
+
+char*
+strtrim(char* data)
+{
+    data = (char*)strbtrim(data);
+    stretrim(data);
+    return data;
+}
+
+#endif /* HAVE_STRTRIM */
+
+#ifndef HAVE_STRTOB
+
+int
+strtob(const char* str)
+{
+    if(strcasecmp(str, "0") == 0 ||
+       strcasecmp(str, "no") == 0 ||
+       strcasecmp(str, "false") == 0 ||
+       strcasecmp(str, "f") == 0 ||
+       strcasecmp(str, "off") == 0)
+        return 0;
+
+    if(strcasecmp(str, "1") == 0 ||
+       strcasecmp(str, "yes") == 0 ||
+       strcasecmp(str, "true") == 0 ||
+       strcasecmp(str, "t") == 0 ||
+       strcasecmp(str, "on") == 0)
+        return 1;
+
+    return -1;
+}
+
+#endif /* HAVE_STRTOB */
+
+
+#ifndef HAVE_STRLCPY
+
+size_t
+strlcpy(char *dst, const char *src, size_t len)
+{
+        size_t ret = strlen(dst);
+
+        while (len > 1) {
+                *dst++ = *src++;
+                len--;
+        }
+        if (len > 0)
+                *dst = '\0';
+        return (ret);
+}
+
+#endif /* HAVE_STRLCPY */
+
+#ifndef HAVE_STRLCAT
+
+size_t
+strlcat(char* dst, const char* src, size_t siz)
+{
+    char* d = dst;
+    const char* s = src;
+    size_t n = siz;
+    size_t dlen;
+
+    while(n-- != 0 && *d != '\0')
+        d++;
+    dlen = d - dst;
+    n = siz - dlen;
+    if(n == 0)
+        return dlen + strlen(s);
+    while(*s != '\0')
+    {
+        if(n != 1)
+        {
+            *d++ = *s;
+            n--;
+        }
+
+        s++;
+    }
+    *d = '\0';
+    return dlen + (s - src);       /* count does not include NUL */
+}
+
+#endif /* HAVE_STRLCAT */