From 5f0f989e98e9ca9f273d27d186fc495dfe429a3d Mon Sep 17 00:00:00 2001
From: lohhiiccc <96543753+lohhiiccc@users.noreply.github.com>
Date: Sun, 29 Mar 2026 15:17:17 +0200
Subject: [PATCH] feat: add cli_parse_ufloat for non-negative float parsing

---
 include/cli_parse_utils.h      |  1 +
 src/Makefile.am                |  3 ++-
 src/parse_utils/parse_ufloat.c | 21 +++++++++++++++++++++
 3 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 src/parse_utils/parse_ufloat.c

diff --git a/include/cli_parse_utils.h b/include/cli_parse_utils.h
index 1ea87ae..7cff7f9 100644
--- a/include/cli_parse_utils.h
+++ b/include/cli_parse_utils.h
@@ -6,5 +6,6 @@
 int	cli_parse_uint64(const char *s, uint64_t *out);
 int	cli_parse_int64(const char *s, int64_t *out);
 int	cli_parse_float(const char *s, float *out);
+int	cli_parse_ufloat(const char *s, float *out);
 
 #endif
diff --git a/src/Makefile.am b/src/Makefile.am
index 2e0e5a3..b7a97f3 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -5,7 +5,8 @@ libcli_la_SOURCES = \
 	help.c \
 	parse_utils/parse_uint.c \
 	parse_utils/parse_int.c \
-	parse_utils/parse_float.c
+	parse_utils/parse_float.c \
+	parse_utils/parse_ufloat.c
 
 libcli_la_CPPFLAGS	= -I$(top_srcdir)/include
 libcli_la_CFLAGS	= -std=c99 -Wall -Wextra
diff --git a/src/parse_utils/parse_ufloat.c b/src/parse_utils/parse_ufloat.c
new file mode 100644
index 0000000..8f2d373
--- /dev/null
+++ b/src/parse_utils/parse_ufloat.c
@@ -0,0 +1,21 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <math.h>
+
+int
+cli_parse_ufloat(const char *s, float *out)
+{
+	char *end;
+
+	if (NULL == s || '\0' == *s)
+		return 1;
+
+	errno = 0;
+	float v = strtof(s, &end);
+
+	if (s == end || ERANGE == errno || '\0' != *end || 0 == isfinite(v) || v < 0.0f)
+		return 1;
+
+	*out = v;
+	return 0;
+}