[PATCH 5/9] strbuf: add strbuf_isspace()

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This helper function checks if a strbuf
contains only space chars or not.

Signed-off-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
---
 strbuf.c | 7 +++++++
 strbuf.h | 1 +
 2 files changed, 8 insertions(+)

diff --git a/strbuf.c b/strbuf.c
index 83caf4a..2124bb8 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -124,6 +124,13 @@ void strbuf_ltrim(struct strbuf *sb)
 	sb->buf[sb->len] = '\0';
 }
 
+int strbuf_isspace(struct strbuf *sb)
+{
+	char *b;
+	for (b = sb->buf; *b && isspace(*b); b++);
+	return !*b;
+}
+
 struct strbuf **strbuf_split_buf(const char *str, size_t slen,
 				 int terminator, int max)
 {
diff --git a/strbuf.h b/strbuf.h
index 73e80ce..02bff3a 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -42,6 +42,7 @@ static inline void strbuf_setlen(struct strbuf *sb, size_t len) {
 extern void strbuf_trim(struct strbuf *);
 extern void strbuf_rtrim(struct strbuf *);
 extern void strbuf_ltrim(struct strbuf *);
+extern int strbuf_isspace(struct strbuf *);
 extern int strbuf_cmp(const struct strbuf *, const struct strbuf *);
 
 /*
-- 
1.8.4.1.616.g07f5c81


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