Initial Import

1 files changed, 104 insertions, 0 deletions

diff --git a/common/xstring.c b/common/xstring.c
new file mode 100644
index 0000000..31a363f
--- /dev/null
+++ b/common/xstring.c
@@ -0,0 +1,104 @@
+/*
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "compat.h"
+#include "xstring.h"
+
+
+/* memins: -------------------------------------------------------------
+ *  Insert bytes at location
+ */
+void memins(void* buff, size_t cbuff, const void* ins, size_t cins)
+{
+	memmove((unsigned char*)buff + cins, buff, cbuff);
+	memcpy(buff, ins, cins);
+}
+
+
+/* memrep: ------------------------------------------------------------
+ *  Replace a number of bytes at a certain location with yet
+ *  another number of bytes
+ */
+void* memrep(void* buff, size_t len, size_t cold, const void* ins, size_t cnew)
+{
+	memmove((unsigned char*)buff + cnew, (unsigned char*)buff + cold, len - cold);
+	memcpy(buff, ins, cnew);
+	return (unsigned char*)buff + cnew;
+}
+
+
+/* starlen: -----------------------------------------------------------
+ *  Returns the length of a null terminated string array
+ */
+size_t starlen(const char* array)
+{
+	size_t cnt = 0;
+	while(array[0] || array[1])
+	{
+		array += strlen(array);
+		cnt++;
+	}
+
+	return cnt;
+}
+
+
+/* starend: -----------------------------------------------------------
+ *  Gets the end of a string array
+ */
+char* starend(const char* array)
+{
+	while(array[0])
+		array += strlen(array) + 1;
+
+	return (char*)array;
+}
+
+
+/* starnadd: ----------------------------------------------------------
+ *  Add a value to a string array
+ */
+char* starnadd(char** parray, const char* str, size_t len)
+{
+	char* last = starend(*parray);
+	if(!strrsrv(*parray, (last - *parray) + len + 2))
+		return NULL;
+
+	// It's possible we were relocated
+	last = starend(*parray);
+
+	strncpy(last, str, len);
+	last += len;
+	last[0] = last[1] = 0;
+	return last;
+}
+
+
+/* starnext: ----------------------------------------------------------
+ *  Get the next value in a string array
+ */
+const char* starnext(const char* prev)
+{
+	prev += strlen(prev) + 1;
+	return prev[0] ? prev : NULL;
+}
+