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