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systemd/SOURCES/0786-strv-introduce-strv_jo...

70 lines
2.1 KiB

From 23ef6c470418b50119dc0bf13b681bfeae820352 Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 11 Sep 2018 13:22:31 +0900
Subject: [PATCH] strv: introduce strv_join_prefix()
(cherry picked from commit 2b9a7d2e96f5f852cdf8cc704930ea2ee456f6a1)
Related: #2049788
---
src/basic/strv.c | 10 +++++++---
src/basic/strv.h | 5 ++++-
2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/src/basic/strv.c b/src/basic/strv.c
index b3716233b5..f1605e4fbb 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -335,21 +335,22 @@ int strv_split_extract(char ***t, const char *s, const char *separators, Extract
return (int) n;
}
-char *strv_join(char **l, const char *separator) {
+char *strv_join_prefix(char **l, const char *separator, const char *prefix) {
char *r, *e;
char **s;
- size_t n, k;
+ size_t n, k, m;
if (!separator)
separator = " ";
k = strlen(separator);
+ m = strlen_ptr(prefix);
n = 0;
STRV_FOREACH(s, l) {
if (s != l)
n += k;
- n += strlen(*s);
+ n += m + strlen(*s);
}
r = new(char, n+1);
@@ -361,6 +362,9 @@ char *strv_join(char **l, const char *separator) {
if (s != l)
e = stpcpy(e, separator);
+ if (prefix)
+ e = stpcpy(e, prefix);
+
e = stpcpy(e, *s);
}
diff --git a/src/basic/strv.h b/src/basic/strv.h
index a09d76706d..9285bc2642 100644
--- a/src/basic/strv.h
+++ b/src/basic/strv.h
@@ -71,7 +71,10 @@ char **strv_split_newlines(const char *s);
int strv_split_extract(char ***t, const char *s, const char *separators, ExtractFlags flags);
-char *strv_join(char **l, const char *separator);
+char *strv_join_prefix(char **l, const char *separator, const char *prefix);
+static inline char *strv_join(char **l, const char *separator) {
+ return strv_join_prefix(l, separator, NULL);
+}
char **strv_parse_nulstr(const char *s, size_t l);
char **strv_split_nulstr(const char *s);