Import backup from 2004-03-08

kernel/string/string.c

@@ -0,0 +1,88 @@
+// string.c
+// Author: Josh Holtrop
+// Created: 02/26/04
+// Implements string functions
+
+#include "string.h"
+
+char *strcat(char *dest, char *src)
+{
+	strcpy(dest+strlen(dest), src);
+}
+
+
+//Splits a string into multiple strings by turning all characters
+// equal to delim into null values (string termination character)
+//Returns the number of strings after the split, 1 if no delim chars
+int	string_split(char *str, char delim)
+{
+	if (strlen(str) < 1)
+		return 0;	//empty string
+	int count = 1;
+	for (; *str; str++)
+	{
+		if (*str == delim)
+		{
+			count++;
+			*str = 0;
+		}
+	}
+	return count;
+}
+
+
+//Advances a char pointer to the byte after the current string's
+// null-terminating character
+//Useful after calling string_split()
+//Returns a pointer to the following string
+char	*string_advance(char *str)
+{
+	for (; *str; str++);
+	return str+1;
+}
+
+
+void	rtrim(char *str)
+{
+	str += strlen(str);	//now points to the null character at the end of the string
+	str--;
+	for (;;)
+	{
+		if ((*str == ' ') || (*str == '\t') || (*str == '\n'))
+			*str-- = 0;
+		else
+			break;
+	}
+}
+
+
+char	*ucase(char *str)
+{
+	char *ret = str;
+	for (;;)
+	{
+		if (*str == 0)
+			break;
+		if ((*str >= 'a') && (*str <= 'z'))
+			*str = (*str) - 32;
+		str++;
+	}
+	return ret;
+}
+
+
+char	*lcase(char *str)
+{
+	char *ret = str;
+	for (;;)
+	{
+		if (*str == 0)
+			break;
+		if ((*str >= 'A') && (*str <= 'Z'))
+			*str = (*str) + 32;
+		str++;
+	}
+	return ret;
+}
+
+

kernel/string/string.h

@@ -0,0 +1,18 @@
+// strings.h
+// Author: Josh Holtrop
+// Created: 02/26/04
+// Implements string functions
+
+#ifndef __HOS_STRING__
+#define __HOS_STRING__ __HOS_STRING__
+
+char	*strcat(char *dest, char *src);
+int	string_split(char *str, char delim);
+char	*string_advance(char *str);
+void	rtrim(char *str);
+char	*ucase(char *str);
+char	*lcase(char *str);
+
+#endif
+
+