[Patch v2 08/17] util: add string-util.[ch]
On Sat, 24 Nov 2012, david at tethera.net wrote:
> From: David Bremner
>
> This is to give a home to strtok_len. It's a bit silly to add a header
> for one routine, but it needs to be shared between several compilation
> units (or at least that's the most natural design).
Good stuff! ;)
Jani.
> ---
> util/Makefile.local |3 ++-
> util/string-util.c | 34 ++
> util/string-util.h | 19 +++
> 3 files changed, 55 insertions(+), 1 deletion(-)
> create mode 100644 util/string-util.c
> create mode 100644 util/string-util.h
>
> diff --git a/util/Makefile.local b/util/Makefile.local
> index 3ca623e..a11e35b 100644
> --- a/util/Makefile.local
> +++ b/util/Makefile.local
> @@ -3,7 +3,8 @@
> dir := util
> extra_cflags += -I$(srcdir)/$(dir)
>
> -libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c
> +libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c \
> + $(dir)/string-util.c
>
> libutil_modules := $(libutil_c_srcs:.c=.o)
>
> diff --git a/util/string-util.c b/util/string-util.c
> new file mode 100644
> index 000..44f8cd3
> --- /dev/null
> +++ b/util/string-util.c
> @@ -0,0 +1,34 @@
> +/* string-util.c - Extra or enhanced routines for null terminated strings.
> + *
> + * Copyright (c) 2012 Jani Nikula
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 3 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see http://www.gnu.org/licenses/ .
> + *
> + * Author: Jani Nikula
> + */
> +
> +
> +#include "string-util.h"
> +
> +char *
> +strtok_len (char *s, const char *delim, size_t *len)
> +{
> +/* skip initial delims */
> +s += strspn (s, delim);
> +
> +/* length of token */
> +*len = strcspn (s, delim);
> +
> +return *len ? s : NULL;
> +}
> diff --git a/util/string-util.h b/util/string-util.h
> new file mode 100644
> index 000..696da40
> --- /dev/null
> +++ b/util/string-util.h
> @@ -0,0 +1,19 @@
> +#ifndef _STRING_UTIL_H
> +#define _STRING_UTIL_H
> +
> +#include
> +
> +/* like strtok(3), but without state, and doesn't modify s. usage pattern:
> + *
> + * const char *tok = input;
> + * const char *delim = " \t";
> + * size_t tok_len = 0;
> + *
> + * while ((tok = strtok_len (tok + tok_len, delim, &tok_len)) != NULL) {
> + * // do stuff with string tok of length tok_len
> + * }
> + */
> +
> +char *strtok_len (char *s, const char *delim, size_t *len);
> +
> +#endif
> --
> 1.7.10.4
>
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Re: [Patch v2 08/17] util: add string-util.[ch]
On Sat, 24 Nov 2012, da...@tethera.net wrote:
> From: David Bremner
>
> This is to give a home to strtok_len. It's a bit silly to add a header
> for one routine, but it needs to be shared between several compilation
> units (or at least that's the most natural design).
Good stuff! ;)
Jani.
> ---
> util/Makefile.local |3 ++-
> util/string-util.c | 34 ++
> util/string-util.h | 19 +++
> 3 files changed, 55 insertions(+), 1 deletion(-)
> create mode 100644 util/string-util.c
> create mode 100644 util/string-util.h
>
> diff --git a/util/Makefile.local b/util/Makefile.local
> index 3ca623e..a11e35b 100644
> --- a/util/Makefile.local
> +++ b/util/Makefile.local
> @@ -3,7 +3,8 @@
> dir := util
> extra_cflags += -I$(srcdir)/$(dir)
>
> -libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c
> +libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c \
> + $(dir)/string-util.c
>
> libutil_modules := $(libutil_c_srcs:.c=.o)
>
> diff --git a/util/string-util.c b/util/string-util.c
> new file mode 100644
> index 000..44f8cd3
> --- /dev/null
> +++ b/util/string-util.c
> @@ -0,0 +1,34 @@
> +/* string-util.c - Extra or enhanced routines for null terminated strings.
> + *
> + * Copyright (c) 2012 Jani Nikula
> + *
> + * This program is free software: you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation, either version 3 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program. If not, see http://www.gnu.org/licenses/ .
> + *
> + * Author: Jani Nikula
> + */
> +
> +
> +#include "string-util.h"
> +
> +char *
> +strtok_len (char *s, const char *delim, size_t *len)
> +{
> +/* skip initial delims */
> +s += strspn (s, delim);
> +
> +/* length of token */
> +*len = strcspn (s, delim);
> +
> +return *len ? s : NULL;
> +}
> diff --git a/util/string-util.h b/util/string-util.h
> new file mode 100644
> index 000..696da40
> --- /dev/null
> +++ b/util/string-util.h
> @@ -0,0 +1,19 @@
> +#ifndef _STRING_UTIL_H
> +#define _STRING_UTIL_H
> +
> +#include
> +
> +/* like strtok(3), but without state, and doesn't modify s. usage pattern:
> + *
> + * const char *tok = input;
> + * const char *delim = " \t";
> + * size_t tok_len = 0;
> + *
> + * while ((tok = strtok_len (tok + tok_len, delim, &tok_len)) != NULL) {
> + * // do stuff with string tok of length tok_len
> + * }
> + */
> +
> +char *strtok_len (char *s, const char *delim, size_t *len);
> +
> +#endif
> --
> 1.7.10.4
>
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[Patch v2 08/17] util: add string-util.[ch]
From: David Bremner
This is to give a home to strtok_len. It's a bit silly to add a header
for one routine, but it needs to be shared between several compilation
units (or at least that's the most natural design).
---
util/Makefile.local |3 ++-
util/string-util.c | 34 ++
util/string-util.h | 19 +++
3 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 util/string-util.c
create mode 100644 util/string-util.h
diff --git a/util/Makefile.local b/util/Makefile.local
index 3ca623e..a11e35b 100644
--- a/util/Makefile.local
+++ b/util/Makefile.local
@@ -3,7 +3,8 @@
dir := util
extra_cflags += -I$(srcdir)/$(dir)
-libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c
+libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c \
+ $(dir)/string-util.c
libutil_modules := $(libutil_c_srcs:.c=.o)
diff --git a/util/string-util.c b/util/string-util.c
new file mode 100644
index 000..44f8cd3
--- /dev/null
+++ b/util/string-util.c
@@ -0,0 +1,34 @@
+/* string-util.c - Extra or enhanced routines for null terminated strings.
+ *
+ * Copyright (c) 2012 Jani Nikula
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/ .
+ *
+ * Author: Jani Nikula
+ */
+
+
+#include "string-util.h"
+
+char *
+strtok_len (char *s, const char *delim, size_t *len)
+{
+/* skip initial delims */
+s += strspn (s, delim);
+
+/* length of token */
+*len = strcspn (s, delim);
+
+return *len ? s : NULL;
+}
diff --git a/util/string-util.h b/util/string-util.h
new file mode 100644
index 000..696da40
--- /dev/null
+++ b/util/string-util.h
@@ -0,0 +1,19 @@
+#ifndef _STRING_UTIL_H
+#define _STRING_UTIL_H
+
+#include
+
+/* like strtok(3), but without state, and doesn't modify s. usage pattern:
+ *
+ * const char *tok = input;
+ * const char *delim = " \t";
+ * size_t tok_len = 0;
+ *
+ * while ((tok = strtok_len (tok + tok_len, delim, &tok_len)) != NULL) {
+ * // do stuff with string tok of length tok_len
+ * }
+ */
+
+char *strtok_len (char *s, const char *delim, size_t *len);
+
+#endif
--
1.7.10.4
[Patch v2 08/17] util: add string-util.[ch]
From: David Bremner
This is to give a home to strtok_len. It's a bit silly to add a header
for one routine, but it needs to be shared between several compilation
units (or at least that's the most natural design).
---
util/Makefile.local |3 ++-
util/string-util.c | 34 ++
util/string-util.h | 19 +++
3 files changed, 55 insertions(+), 1 deletion(-)
create mode 100644 util/string-util.c
create mode 100644 util/string-util.h
diff --git a/util/Makefile.local b/util/Makefile.local
index 3ca623e..a11e35b 100644
--- a/util/Makefile.local
+++ b/util/Makefile.local
@@ -3,7 +3,8 @@
dir := util
extra_cflags += -I$(srcdir)/$(dir)
-libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c
+libutil_c_srcs := $(dir)/xutil.c $(dir)/error_util.c $(dir)/hex-escape.c \
+ $(dir)/string-util.c
libutil_modules := $(libutil_c_srcs:.c=.o)
diff --git a/util/string-util.c b/util/string-util.c
new file mode 100644
index 000..44f8cd3
--- /dev/null
+++ b/util/string-util.c
@@ -0,0 +1,34 @@
+/* string-util.c - Extra or enhanced routines for null terminated strings.
+ *
+ * Copyright (c) 2012 Jani Nikula
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see http://www.gnu.org/licenses/ .
+ *
+ * Author: Jani Nikula
+ */
+
+
+#include "string-util.h"
+
+char *
+strtok_len (char *s, const char *delim, size_t *len)
+{
+/* skip initial delims */
+s += strspn (s, delim);
+
+/* length of token */
+*len = strcspn (s, delim);
+
+return *len ? s : NULL;
+}
diff --git a/util/string-util.h b/util/string-util.h
new file mode 100644
index 000..696da40
--- /dev/null
+++ b/util/string-util.h
@@ -0,0 +1,19 @@
+#ifndef _STRING_UTIL_H
+#define _STRING_UTIL_H
+
+#include
+
+/* like strtok(3), but without state, and doesn't modify s. usage pattern:
+ *
+ * const char *tok = input;
+ * const char *delim = " \t";
+ * size_t tok_len = 0;
+ *
+ * while ((tok = strtok_len (tok + tok_len, delim, &tok_len)) != NULL) {
+ * // do stuff with string tok of length tok_len
+ * }
+ */
+
+char *strtok_len (char *s, const char *delim, size_t *len);
+
+#endif
--
1.7.10.4
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