From f8cfe5e8806cfd84dc83714e495b58890ef4bb02 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@hornquist.se>
Date: Sun, 10 Feb 2019 00:47:02 +0100
Subject: Add formatting macros.

---
 linked_list.h     |  2 ++
 linked_list.inc.h | 11 +++++++++++
 macro.h           | 15 +++++++++++++++
 strbuf.c          | 10 ++++++++++
 strbuf.h          |  4 ++++
 trie.h            |  3 +++
 trie.inc.h        | 44 ++++++++++++++++++++++++++++++++++++++++++++
 vcal.c            | 12 ++++++++++++
 vcal.h            |  2 ++
 9 files changed, 103 insertions(+)

diff --git a/linked_list.h b/linked_list.h
index c46304cf..35e90d9e 100644
--- a/linked_list.h
+++ b/linked_list.h
@@ -59,6 +59,8 @@ int RESET(LLIST(TYPE)) ( LLIST(TYPE)* llist );
 
 LLIST(TYPE)* RESOLVE(LLIST(TYPE)) (LLIST(TYPE)* dest, LLIST(TYPE)* new);
 
+FMT_F(LLIST(TYPE));
+
 /* Iterator */
 
 // #define __BEG_LLIST(v, set) v = (set)->head
diff --git a/linked_list.inc.h b/linked_list.inc.h
index 6a0546c7..6bf3d158 100644
--- a/linked_list.inc.h
+++ b/linked_list.inc.h
@@ -164,4 +164,15 @@ int RESET(LLIST(TYPE)) ( LLIST(TYPE)* llist ) {
 	return 0;
 }
 
+FMT_F(LLIST (TYPE)) {
+	int seek = 0;
+	fmtf("(");
+	FOR(LLIST(TYPE), link, this) {
+		seek += FMT(TYPE)(link->value, buf + seek);
+	}
+	fmtf(")");
+
+	return seek;
+}
+
 #endif /* TYPE */
diff --git a/macro.h b/macro.h
index bd421260..e1bff786 100644
--- a/macro.h
+++ b/macro.h
@@ -109,5 +109,20 @@
 #define GET(T)       TEMPL(get       , T)
 #define RESET(T)     TEMPL(reset     , T)
 
+/*
+ * Formatting macros.
+ * Transform objects into string representation of themselves. 
+ * buf should be a suffisiently large memmory location, if it's to
+ * small then bad stuff might happen.
+ *
+ * Should return the number of bytes written (like sprintf).
+ */
+
+#define FMT_T(T)     TEMPL(format    , T)
+#define FMT_F(T) int FMT_T(T)(T* this, char* buf, ...)
+// TODO change order of buf and item
+#define __FMT_HELP(item, buf, ...) ((item), (buf), VA_ARGS_NUM(__VA_ARGS__), ## __VA_ARGS__)
+#define FMT(T) FMT_T(T) __FMT_HELP
+#define fmtf(...) seek += sprintf(buf + seek, __VA_ARGS__)
 
 #endif /* MACRO_H */
diff --git a/strbuf.c b/strbuf.c
index 8d1c7f15..dcfcc826 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -1,6 +1,7 @@
 #include "strbuf.h"
 
 #include <string.h>
+#include <stdio.h>
 
 #ifdef SAFE_STR
 #include "err.h"
@@ -153,3 +154,12 @@ int strbuf_soft_reset(strbuf* s) {
 	s->ptr = s->len = 0;
 	return 0;
 }
+
+strbuf* RESOLVE(strbuf)(strbuf* dest, strbuf* new) {
+	if (dest == NULL) return new;
+	else return dest;
+}
+
+FMT_F(strbuf) {
+	return sprintf(buf, "%s", this->mem);
+}
diff --git a/strbuf.h b/strbuf.h
index 77a401b5..e6f59896 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -103,4 +103,8 @@ int strbuf_realloc_copy(strbuf* dest, strbuf* src);
  */
 int strbuf_init_copy(strbuf* dest, strbuf* src);
 
+strbuf* RESOLVE(strbuf)(strbuf*, strbuf*);
+
+FMT_F(strbuf);
+
 #endif /* STRBUF_H */
diff --git a/trie.h b/trie.h
index 9acbe300..293b4841 100644
--- a/trie.h
+++ b/trie.h
@@ -51,4 +51,7 @@ int TRIE_DOT_HELP(TYPE) ( TRIE_NODE(TYPE)*, FILE* );
 
 int EMPTY(TRIE(TYPE))(TRIE(TYPE)*);
 
+FMT_F(TRIE_NODE(TYPE));
+FMT_F(TRIE(TYPE));
+
 #endif /* TYPE */
diff --git a/trie.inc.h b/trie.inc.h
index 3bc19895..a2590b3e 100644
--- a/trie.inc.h
+++ b/trie.inc.h
@@ -2,6 +2,8 @@
 #error "Set TYPE before including this file"
 #else
 
+#include <stdarg.h>
+
 #include "err.h"
 
 INIT_F ( TRIE(TYPE) ) {
@@ -148,4 +150,46 @@ int TRIE_DOT_HELP(TYPE) ( TRIE_NODE(TYPE)* root, FILE* f  ) {
 	return 0;
 }
 
+FMT_F(TRIE_NODE(TYPE)) {
+
+	va_list ap;
+	va_start(ap, buf);
+	int argc = va_arg(ap, int);
+	int depth = argc >= 1
+		? va_arg(ap, int)
+		: 0;
+	va_end(ap);
+
+	int seek = 0;
+
+	TRIE_NODE(TYPE)* n = this;
+
+	if (n == NULL) { fmtf("\n"); }
+	while (n != NULL) {
+		fmtf("|");
+		FOR(int, i, depth) fmtf(" ");
+		fmtf("%c ", n->c == '\0' ? '0' : n->c);
+		if (n->value != NULL) {
+			seek += FMT(TYPE)(n->value, buf + seek);
+		   	fmtf("\n");
+		}
+
+		if (n->child != NULL) {
+			fmtf("\n");
+			seek += FMT(TRIE_NODE(TYPE))(n->child, buf + seek, depth + 1);
+		}
+		n = n->next;
+	}
+	return seek;
+
+}
+
+FMT_F(TRIE(TYPE)) {
+	int seek = 0;
+	fmtf("Trie: %p: {\n", this);
+	seek += FMT(TRIE_NODE(TYPE))(this->root->child, buf + seek);
+	fmtf("}");
+	return seek;
+}
+
 #endif /* TYPE */
diff --git a/vcal.c b/vcal.c
index 3cb46b5f..b54a0370 100644
--- a/vcal.c
+++ b/vcal.c
@@ -141,3 +141,15 @@ int DEEP_COPY(vcomponent)(vcomponent* a, vcomponent* b) {
 	ERR("Deep copy not implemented for vcomponent");
 	return -1;
 }
+
+FMT_F(vcomponent) {
+	return sprintf(buf, "vcomp (%p)", this);
+}
+
+FMT_F(content_line) {
+	char str_a[100], str_b[100], str_c[100];;
+	FMT(strbuf)(&this->key, str_a);
+	FMT(LLIST(strbuf))(&this->params, str_b);
+	FMT(LLIST(strbuf))(&this->vals, str_c);
+	return sprintf(buf, "[[cl|%s] params := %s vals := %s]", str_a, str_b, str_c);
+}
diff --git a/vcal.h b/vcal.h
index 761448c9..dc639232 100644
--- a/vcal.h
+++ b/vcal.h
@@ -87,5 +87,7 @@ int PUSH(vcomponent)(vcomponent*, vcomponent*);
 
 int DEEP_COPY(vcomponent)(vcomponent*, vcomponent*);
 
+FMT_F(content_line);
+FMT_F(vcomponent);
 
 #endif /* VCAL_H */
-- 
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