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From: Antony Pavlov <antonynpavlov@gmail.com>
To: barebox@lists.infradead.org
Subject: [PATCH v2 6/7] parseopt: introduce parseopt_u16() and parseopt_str()
Date: Mon, 15 Jan 2018 00:22:51 +0300	[thread overview]
Message-ID: <20180114212252.29682-7-antonynpavlov@gmail.com> (raw)
In-Reply-To: <20180114212252.29682-1-antonynpavlov@gmail.com>

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
---
 include/parseopt.h |  2 ++
 lib/parseopt.c     | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)

diff --git a/include/parseopt.h b/include/parseopt.h
index becc734c2b..1f9763f8c9 100644
--- a/include/parseopt.h
+++ b/include/parseopt.h
@@ -3,5 +3,7 @@
 
 void parseopt_b(const char *options, const char *opt, bool *val);
 void parseopt_hu(const char *options, const char *opt, unsigned short *val);
+void parseopt_u16(const char *options, const char *opt, uint16_t *val);
+void parseopt_str(const char *options, const char *opt, char **val);
 
 #endif /* __PARSEOPT_H__ */
diff --git a/lib/parseopt.c b/lib/parseopt.c
index 8ff83019a7..8211733e3b 100644
--- a/lib/parseopt.c
+++ b/lib/parseopt.c
@@ -58,3 +58,67 @@ again:
 	if (*endp == ',' || *endp == '\0')
 		*val = v;
 }
+
+void parseopt_u16(const char *options, const char *opt, uint16_t *val)
+{
+	const char *start;
+	size_t optlen = strlen(opt);
+	ulong v;
+	char *endp;
+
+again:
+	start = strstr(options, opt);
+
+	if (!start)
+		return;
+
+	if (start > options && start[-1] != ',') {
+		options = start;
+		goto again;
+	}
+
+	if (start[optlen] != '=') {
+		options = start;
+		goto again;
+	}
+
+	v = simple_strtoul(start + optlen + 1, &endp, 0);
+	if (v > U16_MAX)
+		return;
+
+	if (*endp == ',' || *endp == '\0')
+		*val = v;
+}
+
+void parseopt_str(const char *options, const char *opt, char **val)
+{
+	const char *start;
+	size_t optlen = strlen(opt);
+	char *endp;
+	char *parsed;
+
+again:
+	start = strstr(options, opt);
+
+	if (!start)
+		return;
+
+	if (start > options && start[-1] != ',') {
+		options = start;
+		goto again;
+	}
+
+	if (start[optlen] != '=') {
+		options = start;
+		goto again;
+	}
+
+	parsed = (char *)start + optlen + 1;
+	endp = parsed;
+	while (*endp != '\0' && *endp != ',') {
+
+		endp++;
+	}
+
+	*val = xstrndup(parsed, endp - parsed);
+}
-- 
2.15.1


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  parent reply	other threads:[~2018-01-14 21:23 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-14 21:22 [PATCH v2 0/7] sandbox: add gpio support with libftdi1 Antony Pavlov
2018-01-14 21:22 ` [PATCH v2 1/7] sandbox: avoid symbol conflict for {open, read, close}dir Antony Pavlov
2018-01-14 21:22 ` [PATCH v2 2/7] sandbox: add gpio support with libftdi1 Antony Pavlov
2018-01-14 21:22 ` [PATCH v2 3/7] sandbox: add i2c and spi libftdi1 bit-bang example Antony Pavlov
2018-01-17 10:01   ` Sascha Hauer
2018-01-19  9:14     ` Antony Pavlov
2018-01-14 21:22 ` [PATCH v2 4/7] move parseopt to lib/ Antony Pavlov
2018-01-14 21:22 ` [PATCH v2 5/7] include/parseopt.h: add guard macro Antony Pavlov
2018-01-14 21:22 ` Antony Pavlov [this message]
2018-01-14 21:22 ` [PATCH v2 7/7] sandbox: parse libftdi options Antony Pavlov
2018-01-17  9:53 ` [PATCH v2 0/7] sandbox: add gpio support with libftdi1 Sascha Hauer
2018-01-19  9:29   ` Antony Pavlov
2018-01-19  9:40     ` Sascha Hauer
2018-01-19 11:39       ` Antony Pavlov
2018-01-18 18:13 ` Antony Pavlov
2018-01-19  7:32   ` Sascha Hauer

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