From 79c1866d9e674966baa2c1a36a28acf690ebeb85 Mon Sep 17 00:00:00 2001
From: Bastian Dehn <hhaalo@arcor.de>
Date: Sun, 7 Jul 2024 16:13:42 +0200
Subject: [PATCH] add merge mode for merge xml files'

---
 src/feierabendxml.c | 12 ++++++-
 src/xml.c           | 84 +++++++++++++++++++++++++++++++++++++++++++++
 src/xml.h           |  1 +
 3 files changed, 96 insertions(+), 1 deletion(-)

diff --git a/src/feierabendxml.c b/src/feierabendxml.c
index ef16c8b..845a65b 100644
--- a/src/feierabendxml.c
+++ b/src/feierabendxml.c
@@ -6,7 +6,7 @@
 int main(int argc, char* argv[])
 {
 	if (argc < 2) {
-		printf("ERROR: %s <init|add|dateadd|entry>\n", argv[0]);
+		printf("ERROR: %s <init|entry|add|dateadd|merge>\n", argv[0]);
 		return 1;
 	}
 
@@ -44,6 +44,16 @@ int main(int argc, char* argv[])
 		return 0;
 	}
 
+	if (strcmp(argv[1], "merge") == 0) {
+		if (argc < 3) {
+			printf("ERROR: %s merge <dir>\n", argv[0]);
+			return 1;
+		}
+
+		merge(argv[2]);
+		return 0;
+	}
+
 	printf("ERROR: unknown command\n");
 	return 0;
 }
\ No newline at end of file
diff --git a/src/xml.c b/src/xml.c
index bf1153c..8517609 100644
--- a/src/xml.c
+++ b/src/xml.c
@@ -4,6 +4,7 @@
 #include <libxml/parser.h>
 #include <libxml/xpath.h>
 #include <libxml/xmlreader.h>
+#include <glob.h>
 #include "xml.h"
 #include "feierabend.h"
 #include "worktime.h"
@@ -404,6 +405,7 @@ void addEntry(const char* date,
 	xmlFreeTextWriter(xmlwriter);
 	xmlTextReaderClose(xmlreader);
 	xmlFreeTextReader(xmlreader);
+	xmlreader = NULL;
 
 	xmlCleanupCharEncodingHandlers();
 	xmlDictCleanup();
@@ -414,4 +416,86 @@ void addEntry(const char* date,
 	saldo = NULL;
 	free(saldostr);
 	saldostr = NULL;
+}
+
+void copyEntry(xmlTextReaderPtr xmlreader, xmlTextWriterPtr xmlwriter)
+{
+	xmlChar* xmlElemContent = xmlCharStrdup("eintrag");
+	xmlNodePtr xmlnode = xmlTextReaderCurrentNode(xmlreader);
+
+	if (xmlnode->type == XML_ELEMENT_NODE && xmlStrcmp(xmlnode->name, xmlElemContent) == 0) {
+		xmlTextWriterStartElement(xmlwriter, xmlnode->name);
+		copyNodeAttributes(xmlreader, xmlwriter);
+		xmlTextWriterEndElement(xmlwriter);
+	}
+
+	free(xmlElemContent);
+	xmlElemContent = NULL;
+}
+
+void merge(const char* dir)
+{
+	glob_t* files = malloc(sizeof(glob_t));
+	char* pattern = malloc(sizeof(char) * strlen(dir) + 7);
+	sprintf(pattern, "%s/*.xml", dir);
+	glob(pattern, 0, NULL, files);
+
+	if (files->gl_pathc < 1) {
+		globfree(files);
+		free(files);
+		files = NULL;
+		free(pattern);
+		pattern = NULL;
+		printf("ERROR: no xml file found\n");
+		return;
+	}
+
+	xmlChar* xmlElemContent = NULL;
+	xmlTextWriterPtr xmlwriter = xmlNewTextWriterFilename("/dev/stdout", 0);
+	xmlTextWriterSetIndent(xmlwriter, 8);
+	xmlElemContent = xmlCharStrdup("\t");
+	xmlTextWriterSetIndentString(xmlwriter, xmlElemContent);
+	free(xmlElemContent);
+	xmlElemContent = NULL;
+
+	xmlTextReaderPtr xmlreader = xmlReaderForFile(files->gl_pathv[0], "UTF-8", 0);
+	xmlNodePtr xmlnode = NULL;
+
+	xmlTextWriterStartDocument(xmlwriter, "1.0", "UTF-8", NULL);
+
+	xmlTextReaderRead(xmlreader);
+	xmlnode = xmlTextReaderCurrentNode(xmlreader);
+	xmlTextWriterStartElement(xmlwriter, xmlnode->name);
+	copyNodeAttributes(xmlreader, xmlwriter);
+	xmlTextReaderClose(xmlreader);
+	xmlFreeTextReader(xmlreader);
+	xmlreader = NULL;
+
+	for (int i = 0; i < files->gl_pathc; i++) {
+		xmlreader = xmlReaderForFile(files->gl_pathv[i], "UTF-8", 0);
+		while (xmlTextReaderRead(xmlreader) == 1) {
+			copyEntry(xmlreader, xmlwriter);
+		}
+		xmlTextReaderClose(xmlreader);
+		xmlFreeTextReader(xmlreader);
+		xmlreader = NULL;
+		xmlCleanupCharEncodingHandlers();
+		xmlDictCleanup();
+	}
+
+	xmlTextWriterEndElement(xmlwriter);
+	xmlTextWriterEndDocument(xmlwriter);
+
+	xmlFreeTextWriter(xmlwriter);
+	xmlwriter = NULL;
+	xmlCleanupCharEncodingHandlers();
+	xmlDictCleanup();
+
+	free(xmlElemContent);
+	xmlElemContent = NULL;
+	globfree(files);
+	free(files);
+	files = NULL;
+	free(pattern);
+	pattern = NULL;
 }
\ No newline at end of file
diff --git a/src/xml.h b/src/xml.h
index 9af3f66..bf00052 100644
--- a/src/xml.h
+++ b/src/xml.h
@@ -12,5 +12,6 @@ void addEntry(const char* date,
 	int end_hour,
 	int end_min,
 	const char* file_path);
+void merge(const char* dir);
 
 #endif
\ No newline at end of file
-- 
2.39.5