From: Gerhard Sittig <redacted>
Date: Thu, 19 Jul 2018 19:10:15 +0000 (+0200)
Subject: strutil: accept leading whitespace in parse rational
X-Git-Url: https://sigrok.org/gitweb/?a=commitdiff_plain;h=7f5bfd613058ce09b267294004717eed2fc2582c;p=libsigrok.git

strutil: accept leading whitespace in parse rational

Programmatic output of floating point numbers might choose to print
spaces instead of an explicit '+' sign, to align the output with the
result of formatting negative numbers yet achieve a screen appearance
similar to what humans would have written. Skip leading whitespace
before insisting in seeing either signs or digits or decimals.
---

diff --git a/src/strutil.c b/src/strutil.c
index 28f202c9..07ed7b44 100644
--- a/src/strutil.c
+++ b/src/strutil.c
@@ -616,6 +616,9 @@ SR_API int sr_parse_rational(const char *str, struct sr_rational *ret)
 	int32_t exponent = 0;
 	bool is_negative = false;
 
+	while (isspace(*str))
+		str++;
+
 	errno = 0;
 	integral = g_ascii_strtoll(str, &endptr, 10);