From 5e747c39f1b7b09f90f6d6bb5e9f70cbe2201443 Mon Sep 17 00:00:00 2001
From: Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
Date: Sat, 27 Jun 2020 21:28:38 -0300
Subject: [PATCH] Suporte a atributos.
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Utiliza nossa simples implementação de dicionário para implementar atributos em
alguns objetos, a serem lidos dos comandos como atributo=valor.
---
 lib/Makefile.am |  1 +
 lib/attr.c      | 64 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/attr.h      | 30 +++++++++++++++++++++++
 3 files changed, 95 insertions(+)
 create mode 100644 lib/attr.c
 create mode 100644 lib/attr.h

diff --git a/lib/Makefile.am b/lib/Makefile.am
index a7586db..4d2bf94 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -5,6 +5,7 @@ libreceita_la_SOURCES = declaracao.c declaracao.h \
 	token.c token.h \
 	cmd.c cmd.h pmhash.c pmhash.h \
 	totais.c totais.h \
+	attr.c attr.h \
 	sistema.c sistema.h \
 	calcula.c calcula.h \
 	gera.c gera.h \
diff --git a/lib/attr.c b/lib/attr.c
new file mode 100644
index 0000000..3f98dbc
--- /dev/null
+++ b/lib/attr.c
@@ -0,0 +1,64 @@
+/*
+ *  Copyright (C) 2015  Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "attr.h"
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "pmhash.h"
+
+int attr_set(struct pmhash **pmhash, char *key, char *val)
+{
+	int r = -ENOMEM;
+	key = strdup(key);
+	if (!key)
+		return r;
+	val = strdup(val);
+	if (!val) {
+		free(val);
+		return r;
+	}
+	r = pmhash_add(pmhash, key, val);
+	if (r) {
+		free(key);
+		free(val);
+	}
+	return r;
+}
+
+int attr_parse(struct pmhash **pmhash, char *arg)
+{
+	int r = -EINVAL;
+	char *val;
+	val = strchr(arg, '=');
+	if (!val)
+		return r;
+	*val++ = '\0';
+	return attr_set(pmhash, arg, val);
+}
+
+char * attr_get(struct pmhash *pmhash, char *key)
+{
+	return (char *) pmhash_get(pmhash, key);
+}
+
+int attr_out(FILE *f, struct pmhash *attr, char *key, int size)
+{
+	return fprintf(f, "%-*.*s", size, size, attr_get(attr, key) ?: "");
+}
diff --git a/lib/attr.h b/lib/attr.h
new file mode 100644
index 0000000..c0e3bd1
--- /dev/null
+++ b/lib/attr.h
@@ -0,0 +1,30 @@
+/*
+ *  Copyright (C) 2015  Thadeu Lima de Souza Cascardo <cascardo@cascardo.eti.br>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _ATTR_H
+#define _ATTR_H
+
+#include <stdio.h>
+#include "pmhash.h"
+
+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);
+
+#endif
-- 
2.20.1