From d6e825ddb3b3e62ab4b55275c1a09cd30f845a8a Mon Sep 17 00:00:00 2001
From: Robert Swiecki <robert@swiecki.net>
Date: Sat, 16 Jun 2018 02:16:24 +0200
Subject: [PATCH] util: c++ version of sprintf

---
 util.cc | 18 ++++++++++++++++++
 util.h  |  1 +
 2 files changed, 19 insertions(+)

diff --git a/util.cc b/util.cc
index 87a9332..ddf39b8 100644
--- a/util.cc
+++ b/util.cc
@@ -176,6 +176,24 @@ std::string* StrAppend(std::string* str, const char* format, ...) {
 	return str;
 }
 
+std::string StrPrintf(const char* format, ...) {
+	char* strp;
+
+	va_list args;
+	va_start(args, format);
+	int ret = vasprintf(&strp, format, args);
+	va_end(args);
+
+	if (ret == -1) {
+		PLOG_E("Memory allocation failed during asprintf()");
+		return "[ERROR: mem_allocation_failed]";
+	}
+
+	std::string str(strp, ret);
+	free(strp);
+	return str;
+}
+
 bool isANumber(const char* s) {
 	for (size_t i = 0; s[i]; s++) {
 		if (!isdigit(s[i]) && s[i] != 'x') {
diff --git a/util.h b/util.h
index f843837..3bf71a5 100644
--- a/util.h
+++ b/util.h
@@ -40,6 +40,7 @@ bool writeBufToFile(const char* filename, const void* buf, size_t len, int open_
 bool createDirRecursively(const char* dir);
 std::string* StrAppend(std::string* str, const char* format, ...)
     __attribute__((format(printf, 2, 3)));
+std::string StrPrintf(const char* format, ...) __attribute__((format(printf, 1, 2)));
 bool isANumber(const char* s);
 uint64_t rnd64(void);
 const std::string sigName(int signo);
-- 
2.7.4