From d5c812c549b81bec3650c72f16d56b8d2302c1bb Mon Sep 17 00:00:00 2001
From: Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
Date: Sat, 27 Jun 2020 22:02:57 -0300
Subject: [PATCH] =?utf8?q?Suporta=20imprimir=20atributo=20como=20n=C3=BAme?=
 =?utf8?q?ro.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
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---
 lib/attr.c | 26 ++++++++++++++++++++++++++
 lib/attr.h |  1 +
 2 files changed, 27 insertions(+)

diff --git a/lib/attr.c b/lib/attr.c
index 3f98dbc..e74ab0a 100644
--- a/lib/attr.c
+++ b/lib/attr.c
@@ -62,3 +62,29 @@ int attr_out(FILE *f, struct pmhash *attr, char *key, int size)
 {
 	return fprintf(f, "%-*.*s", size, size, attr_get(attr, key) ?: "");
 }
+
+int attr_out_int(FILE *f, struct pmhash *attr, char *key, int size)
+{
+
+	/*
+	 * As there is no validation of the string when parsed, there is no
+	 * point returning any error when there is a parsing failure here. We
+	 * emit only a warning, then. Unfortunately, there is no line
+	 * information here.
+	 */
+
+	char *val;
+	unsigned long long num = 0;
+	val = attr_get(attr, key);
+	if (val) {
+		char *end;
+		errno = 0;
+		num = strtoull(val, &end, 0);
+		if ((end && *end != '\0') || errno) {
+			fprintf(stderr, "Found invalid value in attribute %s: %s: not a number\n", key, val);
+			num = 0;
+		}
+	}
+
+	return fprintf(f, "%0*llu", size, num);
+}
diff --git a/lib/attr.h b/lib/attr.h
index c0e3bd1..8515f86 100644
--- a/lib/attr.h
+++ b/lib/attr.h
@@ -26,5 +26,6 @@ int attr_set(struct pmhash **pmhash, char *key, char *val);
 int attr_parse(struct pmhash **pmhash, char *arg);
 char * attr_get(struct pmhash *pmhash, char *key);
 int attr_out(FILE *f, struct pmhash *attr, char *key, int size);
+int attr_out_int(FILE *f, struct pmhash *attr, char *key, int size);
 
 #endif
-- 
2.20.1