Initial commitHEADmaster

3 files changed, 166 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..24314bf
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+demo: main.c
+	tcc -o $@ -I/usr/include/libxml2 -lxml2 $<
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..bd5651c
--- /dev/null
+++ b/main.c
@@ -0,0 +1,140 @@
+/*
+ * XML to SQL converter
+ * Author: ryo@repack.top
+ * Website: https://repack.top/~ryo
+ * Version: alpha
+ */
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define astrtr(s) s[strlen(s)-1] = '\0'
+#define astrcmp(s1, s2) xmlStrcmp(s1, (xmlChar *)s2) == 0
+#define asprintf(dst, ...) sprintf(dst+strlen(dst), __VA_ARGS__)
+
+void query_create(xmlNode *root, char query[]);
+void query_insert(xmlNode *root, char query[]);
+
+int main(int argc, char *argv[])
+{
+	xmlDocPtr doc;
+	xmlNodePtr root;
+	char *query = malloc(2048 * sizeof(char));
+
+	if (argc < 2) {
+		fprintf(stderr, "no file specified\n");
+		return 1;
+	}
+
+	doc = xmlReadFile(argv[1], NULL, XML_PARSE_NOBLANKS);
+	if (doc == NULL) {
+		fprintf(stderr, "can not parse the document\n");
+		return 1;
+	}
+
+	root = xmlDocGetRootElement(doc);
+
+	query_create(root, query);
+	query_insert(root, query);
+	puts(query);
+
+	xmlFreeDoc(doc);
+	free(query);
+	return 0;
+}
+
+void query_create(xmlNode *root, char *query)
+{
+	xmlNode *cur, *parent;
+	int uuid = 0, end, nested = 0;
+
+	cur = root;
+	while (cur) {
+		asprintf(query, "CREATE TABLE %s(", cur->name);
+		cur = cur->children;
+		if (cur->children->type == XML_ELEMENT_NODE) {
+			parent = cur->parent;
+			nested = 1;
+			cur = cur->children;
+		}
+
+		while (cur->children->type == XML_TEXT_NODE) {
+			if (astrcmp(cur->name, "uuid"))
+				uuid = 1;
+
+			asprintf(query, "%s,", cur->name);
+
+			cur = cur->next;
+			if (cur == NULL) break;
+		}
+		if (nested) {
+			cur = parent->next;
+			nested = 0;
+		}
+
+		if (!uuid) {
+			asprintf(query, "%s_uuid,", root->name);
+		}
+
+		astrtr(query);
+		strcat(query, ");\n");
+	}
+}
+
+void query_insert(xmlNode *root, char *query)
+{
+	xmlNode *cur, *parent;
+	int uuid = 0, end, nested = 0;
+
+	cur = root;
+	while (cur) {
+		asprintf(query, "INSERT INTO %s VALUES(", cur->name);
+		cur = cur->children;
+		if (cur->children->type == XML_ELEMENT_NODE) {
+			parent = cur->parent;
+			nested = 1;
+			cur = cur->children;
+		}
+
+		while (cur->children->type == XML_TEXT_NODE) {
+			if (astrcmp(cur->name, "uuid"))
+				uuid = 1;
+
+			asprintf(query, "'%s',", xmlNodeGetContent(cur));
+
+			if (cur->next == NULL) {
+				if (nested) {
+					if (cur->parent == parent->last) {
+						break;
+					}
+					else {
+						astrtr(query);
+						strcat(query, "),\n(");
+						cur = cur->parent->next->children;
+					}
+				} else {
+					cur = cur->next;
+					break;
+				}
+			} else
+				cur = cur->next;
+		}
+
+		if (nested) {
+			cur = parent->next;
+			nested = 0;
+		}
+
+		if (!uuid) {
+			asprintf(query, "'%s',", xmlNodeGetContent(root->children));
+		}
+
+		astrtr(query);
+		strcat(query, ");\n");
+	}
+	astrtr(query);
+}
+
diff --git a/test.xml b/test.xml
new file mode 100644
index 0000000..4a06a53
--- /dev/null
+++ b/test.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0"?>
+<library>
+  <uuid>550e8400-e29b-41d4-a716-446655440000</uuid>
+  <title>Main Library</title>
+  <books>
+    <book>
+      <id>1</id>
+      <title>The Great Gatsby</title>
+      <author>F. Scott Fitzgerald</author>
+      <publication_year>1925</publication_year>
+    </book>
+    <book>
+      <id>2</id>
+      <title>To Kill a Mockingbird</title>
+      <author>Harper Lee</author>
+      <publication_year>1960</publication_year>
+    </book>
+  </books>
+  <address>
+    <street>123 Library Lane</street>
+    <city>Booktown</city>
+    <zip>90210</zip>
+  </address>
+</library>