9os

commit 7358f3ab5ae9eb51290ac8e4d96a8ef4eafb660e
parent 0d00f681251d107dab8cf41154286d7fb807db36
Author: Roberto Vargas <roberto.vargas@arm.com>
Date:   Thu,  4 Apr 2019 09:52:44 +0100

[libk] Add tokenize()

This function is intended to make easier parsing ctl
messages.

Change-Id: I7b9b62dc39543b0badeadf6a86937f85d08ef75d

Diffstat:
M
include/libk.h
 | 
1
+
M
src/libk/Makefile
 | 
1
+
A
src/libk/tokenize.c
 | 
24
++++++++++++++++++++++++

3 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/include/libk.h b/include/libk.h
@@ -15,3 +15,4 @@ extern int kvprint(const char *fmt, va_list va);
 extern int kwrite(char *buf, int n);
 extern void kerror(const char *s);
 extern int putenv(char *name);
+extern int tokenize(char *line, char *tokens[], int ntoks);
diff --git a/src/libk/Makefile b/src/libk/Makefile
@@ -12,6 +12,7 @@ OBJS = doprnt.o \
        kgets.o \
        kerror.o \
        kwrite.o \
+       tokenize.o \
        putenv-$(MODE).o \
        __assert.o \
 
diff --git a/src/libk/tokenize.c b/src/libk/tokenize.c
@@ -0,0 +1,24 @@
+#include <ctype.h>
+
+#include <libk.h>
+
+int
+tokenize(char *line, char *tokens[], int ntoks)
+{
+	int n;
+
+	for (n = 0; n < ntoks; n++) {
+		while (isspace(*line))
+			*line++ = '\0';
+
+		if (*line == '\0')
+			return n;
+		tokens[n] = line;
+
+		while (*line && !isspace(*line))
+			line++;
+		*line++ = '\0';
+	}
+
+	return n;
+}