From 3d878bfc3ed733ca3b29ecc2ff50a96dfb47ca06 Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Sat, 30 Dec 2023 23:22:59 +0100
Subject: string: stpecpy -> string_append

---
 src/event_loop.c |  4 ++--
 src/string.c     |  6 +++---
 src/string.h     | 16 ++++++++++++++--
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/src/event_loop.c b/src/event_loop.c
index e463aca..736a553 100644
--- a/src/event_loop.c
+++ b/src/event_loop.c
@@ -132,8 +132,8 @@ static void event_loop_remove(struct event_loop *loop, struct event_fd *entry)
 static char *append_event(char *buf, size_t sz, char *ptr, const char *event)
 {
 	if (ptr > buf)
-		ptr = stpecpy(ptr, buf + sz, ",");
-	return stpecpy(ptr, buf + sz, event);
+		ptr = string_append(ptr, buf + sz, ",");
+	return string_append(ptr, buf + sz, event);
 }
 
 static char *events_to_string(short events)
diff --git a/src/string.c b/src/string.c
index f2010c6..b610e2f 100644
--- a/src/string.c
+++ b/src/string.c
@@ -12,9 +12,9 @@
 #include <stdlib.h>
 #include <string.h>
 
-/* This is not provided by glibc; however, it does provide a possible
- * implementation in string_copying(7), which I copied from. */
-char *stpecpy(char *dst, char *end, const char *src)
+/* glibc calls this stpecpy; it's not provided by glibc; however, it does
+ * provide a possible implementation in string_copying(7), which I copied from. */
+char *string_append(char *dst, char *end, const char *src)
 {
 	if (!dst)
 		return NULL;
diff --git a/src/string.h b/src/string.h
index 7c16318..e9f2b89 100644
--- a/src/string.h
+++ b/src/string.h
@@ -8,8 +8,20 @@
 #ifndef __STRING_H__
 #define __STRING_H__
 
-/* For details, see string_copying(7). */
-char *stpecpy(char *dst, char *end, const char *src);
+/*
+ * This is an implementation for stpecpy.
+ * For details, see string_copying(7).
+ *
+ * You can safely do something like this:
+ *
+ * char buf[128];
+ * char *ptr = buf;
+ *
+ * ptr = string_append(ptr, buf + 128, "random");
+ * ptr = string_append(ptr, buf + 128, "strings");
+ * ptr = string_append(ptr, buf + 128, "can be appended safely");
+ */
+char *string_append(char *dst, char *end, const char *src);
 
 int string_to_int(const char *src, int *result);
 
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