[U-Boot] [PATCH v3 01/18] Make linux kernel string funcs available to tools
Joe Hershberger
joe.hershberger at ni.com
Thu Nov 1 17:39:38 CET 2012
isspace() and strim() are not in the typical user-mode string.h, so
put them in a separate compilation unit so that they can be built into
tools that need them independent of the other common string functions.
This allows code shared by u-boot and the linux user-mode tools to link.
Signed-off-by: Joe Hershberger <joe.hershberger at ni.com>
---
include/linux/linux_string.h | 8 +++++++
include/linux/string.h | 5 +----
lib/Makefile | 1 +
lib/linux_string.c | 51 ++++++++++++++++++++++++++++++++++++++++++++
lib/string.c | 39 ---------------------------------
5 files changed, 61 insertions(+), 43 deletions(-)
create mode 100644 include/linux/linux_string.h
create mode 100644 lib/linux_string.c
diff --git a/include/linux/linux_string.h b/include/linux/linux_string.h
new file mode 100644
index 0000000..192b4c9
--- /dev/null
+++ b/include/linux/linux_string.h
@@ -0,0 +1,8 @@
+#ifndef _LINUX_LINUX_STRING_H_
+#define _LINUX_LINUX_STRING_H_
+
+extern char * skip_spaces(const char *);
+
+extern char *strim(char *);
+
+#endif
diff --git a/include/linux/string.h b/include/linux/string.h
index 9a8cbc2..2a6e52f 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -47,10 +47,7 @@ extern char * strchr(const char *,int);
#ifndef __HAVE_ARCH_STRRCHR
extern char * strrchr(const char *,int);
#endif
-extern char * skip_spaces(const char *);
-
-extern char *strim(char *);
-
+#include <linux/linux_string.h>
#ifndef __HAVE_ARCH_STRSTR
extern char * strstr(const char *,const char *);
#endif
diff --git a/lib/Makefile b/lib/Makefile
index e44e045..5652986 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -68,6 +68,7 @@ endif
COBJS-y += crc32.o
COBJS-y += ctype.o
COBJS-y += div64.o
+COBJS-y += linux_string.o
COBJS-y += string.o
COBJS-y += time.o
COBJS-$(CONFIG_BOOTP_PXE) += uuid.o
diff --git a/lib/linux_string.c b/lib/linux_string.c
new file mode 100644
index 0000000..d5a5e08
--- /dev/null
+++ b/lib/linux_string.c
@@ -0,0 +1,51 @@
+/*
+ * linux/lib/string.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ */
+
+#ifdef USE_HOSTCC
+#include <stdio.h>
+#endif
+
+#include <linux/ctype.h>
+#include <linux/string.h>
+
+/**
+ * skip_spaces - Removes leading whitespace from @str.
+ * @str: The string to be stripped.
+ *
+ * Returns a pointer to the first non-whitespace character in @str.
+ */
+char *skip_spaces(const char *str)
+{
+ while (isspace(*str))
+ ++str;
+ return (char *)str;
+}
+
+/**
+ * strim - Removes leading and trailing whitespace from @s.
+ * @s: The string to be stripped.
+ *
+ * Note that the first trailing whitespace is replaced with a %NUL-terminator
+ * in the given string @s. Returns a pointer to the first non-whitespace
+ * character in @s.
+ */
+char *strim(char *s)
+{
+ size_t size;
+ char *end;
+
+ s = skip_spaces(s);
+ size = strlen(s);
+ if (!size)
+ return s;
+
+ end = s + size - 1;
+ while (end >= s && isspace(*end))
+ end--;
+ *(end + 1) = '\0';
+
+ return s;
+}
diff --git a/lib/string.c b/lib/string.c
index c3ad055..2c4f0ec 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -214,45 +214,6 @@ char * strrchr(const char * s, int c)
}
#endif
-
-/**
- * skip_spaces - Removes leading whitespace from @str.
- * @str: The string to be stripped.
- *
- * Returns a pointer to the first non-whitespace character in @str.
- */
-char *skip_spaces(const char *str)
-{
- while (isspace(*str))
- ++str;
- return (char *)str;
-}
-
-/**
- * strim - Removes leading and trailing whitespace from @s.
- * @s: The string to be stripped.
- *
- * Note that the first trailing whitespace is replaced with a %NUL-terminator
- * in the given string @s. Returns a pointer to the first non-whitespace
- * character in @s.
- */
-char *strim(char *s)
-{
- size_t size;
- char *end;
-
- s = skip_spaces(s);
- size = strlen(s);
- if (!size)
- return s;
-
- end = s + size - 1;
- while (end >= s && isspace(*end))
- end--;
- *(end + 1) = '\0';
-
- return s;
-}
#ifndef __HAVE_ARCH_STRLEN
/**
* strlen - Find the length of a string
--
1.7.11.5
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