1 files changed, 458 insertions, 0 deletions
diff --git a/common/compat.c b/common/compat.c
new file mode 100644
index 0000000..ff8d527
--- /dev/null
+++ b/common/compat.c
@@ -0,0 +1,458 @@
+/*
+ * AUTHOR
+ * N. Nielsen
+ *
+ * LICENSE
+ * This software is in the public domain.
+ *
+ * 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 author(s) 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.
+ *
+ * SUPPORT
+ * Send bug reports to: <nielsen@memberwebs.com>
+ */
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include "compat.h"
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+#ifndef HAVE_TOLOWER
+int tolower(int c)
+{
+	if('A' <= c && c <= 'Z')
+		c += 'a' - 'A';
+	return c;
+}
+#define HAVE_TOLOWER
+#endif
+
+
+#ifndef HAVE_STRDUP
+
+#ifndef HAVE_MALLOC
+#error Need a working malloc.
+#endif
+
+char* strdup(const char* str)
+{
+	char* dup = (char*)malloc((strlen(str) + 1) * sizeof(char));
+	if(dup)
+		strcpy(dup, str);
+	return dup;
+}
+#define HAVE_STRDUP
+#endif
+
+
+#ifndef HAVE_STRNDUP
+#ifdef HAVE_MEMORY_H
+#include <memory.h>
+#endif
+char* strndup(const char* str, size_t cnt)
+{
+	char* buff = malloc(sizeof(char) * (cnt + 1));
+	if(buff)
+	{
+		memcpy(buff, str, sizeof(char) * cnt);
+		buff[cnt] = 0;
+	}
+	return buff;
+}
+#endif
+
+
+#ifndef HAVE_STRCASESTR
+char* strcasestr(const char* buff, const char* str)
+{
+	const char* ptr = buff;
+
+    while (*ptr != 0x00)
+	{
+        const char* one = ptr;
+        const char* two = str;
+
+        while (tolower(*one) == tolower(*two))
+		{
+            one++;
+            two++;
+            if (*two == 0x00)
+				return (char*) ptr;
+        }
+        ptr++;
+    }
+    return NULL;
+}
+#endif
+
+#ifndef HAVE_STRLCPY
+
+#ifndef HAVE_STRNCPY
+#error neither strncpy or strlcpy found
+#endif
+
+void strlcpy(char* dest, const char* src, size_t count)
+{
+	strncpy(dest, src, count);
+	dest[count - 1] = 0;
+}
+#endif
+
+#ifndef HAVE_STRLCAT
+
+#ifndef HAVE_STRNCAT
+#error neither strncat or strlcat found
+#endif
+
+void strlcat(char* dest, const char* src, size_t count)
+{
+	strncat(dest, src, count);
+	dest[count - 1] = 0;
+}
+#endif
+
+
+#ifndef HAVE_VASPRINTF
+
+#ifndef HAVE_VSNPRINTF
+#error neither vasprintf or vsnprintf found
+#endif
+
+int vasprintf(char** ret, const char* format, va_list vl)
+{
+	size_t size = 32;
+	int c;
+	*ret = NULL;
+
+	do
+	{
+		// Double the buffer size for next time around
+		size += size;
+
+		if(*ret)
+			free(*ret);
+
+		*ret = (char*)malloc(sizeof(char) * size);
+
+		if(!(*ret))
+		{
+			errno = ENOMEM;
+			return -1;
+		}
+
+		c = vsnprintf(*ret, size, format, vl);
+	}
+	while(c < 0);
+
+	return c;
+}
+
+#endif
+
+
+/*
+ * We need to get a better check for this one.
+ * Basically have to make a variable __progname if none
+ * exist
+ */
+
+#ifndef HAVE_UNISTD_H
+
+char* __progname = 0;
+char prognamebuf[256];
+
+void fixprogname()
+{
+	if(__progname == 0)
+	{
+		const char* beg = strrchr(_pgmptr, '\\');
+		const char* temp = strrchr(_pgmptr, '/');
+		beg = (beg > temp) ? beg : temp;
+		beg = (beg) ? beg + 1 : _pgmptr;
+
+		temp = strrchr(_pgmptr, '.');
+		temp = (temp > beg) ? temp : _pgmptr + strlen(_pgmptr);
+
+		if((temp - beg) > 255)
+			temp = beg + 255;
+
+		strncpy(prognamebuf, beg, temp - beg);
+		prognamebuf[temp - beg] = 0;
+		__progname = prognamebuf;
+	}
+}
+#endif
+
+
+
+#ifndef HAVE_GETOPT
+
+int		opterr = 1,             /* if error message should be printed */
+        optind = 1,             /* index into parent argv vector */
+        optopt,                 /* character checked for validity */
+        optreset;               /* reset getopt */
+char*	optarg;
+
+#define BADCH   (int)'?'
+#define BADARG  (int)':'
+#define EMSG    ""
+
+/*
+ * getopt --
+ *      Parse argc/argv argument vector.
+ */
+int getopt(int nargc, char* const* nargv, const char* ostr)
+{
+    static char* place = EMSG;              /* option letter processing */
+    char *oli;                              /* option letter list index */
+
+	fixprogname();
+
+	if(optreset || !*place)					/* update scanning pointer */
+	{
+		optreset = 0;
+		if(optind >= nargc || *(place = nargv[optind]) != '-')
+		{
+			place = EMSG;
+            return (-1);
+        }
+
+		if (place[1] && *++place == '-')       /* found "--" */
+		{
+			++optind;
+            place = EMSG;
+            return (-1);
+        }
+	}											/* option letter okay? */
+
+    if ((optopt = (int)*place++) == (int)':' ||
+		!(oli = strchr(ostr, optopt)))
+	{
+		/*
+         * if the user didn't specify '-' as an option,
+		 * assume it means -1.
+		 */
+		if(optopt == (int)'-')
+			return (-1);
+		if(!*place)
+			++optind;
+		if(opterr && *ostr != ':' && optopt != BADCH)
+			(void)fprintf(stderr, "%s: illegal option -- %c\n", __progname, optopt);
+				return(BADCH);
+	}
+	if (*++oli != ':')                  /* don't need argument */
+	{
+		optarg = NULL;
+		if(!*place)
+			++optind;
+	}
+	else                                /* need an argument */
+	{
+		if (*place)                     /* no white space */
+			optarg = place;
+		else if (nargc <= ++optind)		/* no arg */
+		{
+			place = EMSG;
+			if (*ostr == ':')
+				return (BADARG);
+			if(opterr)
+				(void)fprintf(stderr, "%s: option requires an argument -- %c\n", __progname, optopt);
+					return(BADCH);
+		}
+		else                            /* white space */
+			optarg = nargv[optind];
+
+		place = EMSG;
+		++optind;
+	}
+	return (optopt);                        /* dump back option letter */
+}
+#endif
+
+
+#ifndef HAVE_ERR_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+static FILE *err_file; /* file to use for error output */
+static void (*err_exit)(int);
+
+/*
+ * This is declared to take a `void *' so that the caller is not required
+ * to include <stdio.h> first.  However, it is really a `FILE *', and the
+ * manual page documents it as such.
+ */
+void err_set_file(void *fp)
+{
+	if (fp)
+		err_file = fp;
+	else
+		err_file = stderr;
+}
+
+void err_set_exit(void (*ef)(int))
+{
+	err_exit = ef;
+}
+
+void err(int eval, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verrc(eval, errno, fmt, ap);
+	va_end(ap);
+}
+
+void verr(int eval, const char *fmt, va_list ap)
+{
+	verrc(eval, errno, fmt, ap);
+}
+
+void errc(int eval, int code, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verrc(eval, code, fmt, ap);
+	va_end(ap);
+}
+
+void verrc(int eval, int code, const char *fmt, va_list ap)
+{
+	fixprogname();
+	if (err_file == 0)
+		err_set_file((FILE *)0);
+	fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL) {
+		vfprintf(err_file, fmt, ap);
+		fprintf(err_file, ": ");
+	}
+	fprintf(err_file, "%s\n", strerror(code));
+	if (err_exit)
+		err_exit(eval);
+	exit(eval);
+}
+
+void errx(int eval, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	verrx(eval, fmt, ap);
+	va_end(ap);
+}
+
+void verrx(int eval, const char *fmt, va_list ap)
+{
+	fixprogname();
+	if (err_file == 0)
+		err_set_file((FILE *)0);
+	fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL)
+		vfprintf(err_file, fmt, ap);
+	fprintf(err_file, "\n");
+	if (err_exit)
+		err_exit(eval);
+	exit(eval);
+}
+
+void warn(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarnc(errno, fmt, ap);
+	va_end(ap);
+}
+
+void vwarn(const char *fmt, va_list ap)
+{
+	vwarnc(errno, fmt, ap);
+}
+
+void warnc(int code, const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarnc(code, fmt, ap);
+	va_end(ap);
+}
+
+void vwarnc(int code, const char *fmt, va_list ap)
+{
+	fixprogname();
+	if (err_file == 0)
+		err_set_file((FILE *)0);
+	fprintf(err_file, "%s: ", __progname);
+	if (fmt != NULL)
+	{
+		vfprintf(err_file, fmt, ap);
+		fprintf(err_file, ": ");
+	}
+	fprintf(err_file, "%s\n", strerror(code));
+}
+
+void warnx(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	vwarnx(fmt, ap);
+	va_end(ap);
+}
+
+void vwarnx(const char *fmt, va_list ap)
+{
+	fixprogname();
+	if(err_file == 0)
+		err_set_file((FILE*)0);
+	fprintf(err_file, "%s: ", __progname);
+	if(fmt != NULL)
+		vfprintf(err_file, fmt, ap);
+	fprintf(err_file, "\n");
+}
+
+#endif
+
+
+
+#ifndef HAVE_STRLWR
+
+char* strlwr(char *string)
+{
+	char * cp;
+	for (cp=string; *cp; ++cp)
+    {
+		if('A' <= *cp && *cp <= 'Z')
+            *cp += 'a' - 'A';
+    }
+    return(string);
+}
+
+#endif
+
+
+
+#ifndef HAVE_REALLOCF
+
+void* reallocf(void* ptr, size_t size)
+{
+	void* ret = realloc(ptr, size);
+
+	if(!ret && size)
+		free(ptr);
+
+	return ret;
+}
+
+#endif
+