Add openAsChild, currently without writing support

2 files changed, 179 insertions, 0 deletions

diff --git a/examples/c4ls_asChild.c b/examples/c4ls_asChild.c
new file mode 100644
index 0000000..8a9d00b
--- /dev/null
+++ b/examples/c4ls_asChild.c
@@ -0,0 +1,100 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <locale.h>
+
+#include "cc4group.h"
+
+const char* formatTime(int32_t time)
+{
+	time_t tTime = time;
+	static char ret[128];
+	strftime(ret, sizeof(ret), "%c", localtime(&tTime));
+	return ret;
+}
+
+const char* formatSize(uint32_t size)
+{
+	static char ret[128];
+	if(size < 1000)
+	{
+		snprintf(ret, 128, "%4u", size);
+		return ret;
+	}
+
+	static const char prefixes[] = " KMGTPE";
+
+	const char* prefix = prefixes;
+	uint32_t fract = 0;
+
+	while(size >= 1000 && *(prefix + 1) != '\0')
+	{
+		++prefix;
+		fract = size % 1000;
+		size /= 1000;
+	}
+
+	if(size < 10)
+	{
+		snprintf(ret, 128, "%1.1f%c", (float)size + (float)fract / 1000, *prefix);
+	}
+	else
+	{
+		snprintf(ret, 128, "%3u%c", size, *prefix);
+	}
+
+	return ret;
+}
+
+int main(int argc, char* argv[])
+{
+	if(argc != 3)
+	{
+		fprintf(stderr, "USAGE: %s <group> <subgroup>\n", argv[0]);
+		return EXIT_FAILURE;
+	}
+
+	CC4Group* group = cc4group.new();
+	bool success = cc4group.openExisting(group, argv[1]);
+	if(!success)
+	{
+		fprintf(stderr, "ERROR: Can not open group file \"%s\": %s\n", argv[1], cc4group.getErrorMessage(group));
+	}
+	else
+	{
+		CC4Group* child = cc4group.openAsChild(group, argv[2]);
+		if(child == NULL)
+		{
+			fprintf(stderr, "ERROR: Can not open as child: %s\n", cc4group.getErrorMessage(group));
+			cc4group.delete(group);
+			return EXIT_FAILURE;
+		}
+		else
+		{
+			cc4group.delete(group);
+
+			CC4Group_EntryInfo* infos;
+			size_t entries;
+
+			success = cc4group.getEntryInfos(child, NULL, &infos, &entries);
+
+			if(!success)
+			{
+				fprintf(stderr, "ERROR: Can not list group entries: %s\n", cc4group.getErrorMessage(child));
+			}
+			else
+			{
+				for(size_t i = 0; i < entries; ++i)
+				{
+					printf("%c %s %s %s\t%s\n", infos[i].directory ? 'd' : infos[i].executable ? 'x' : ' ', formatTime(infos[i].modified), formatSize(infos[i].totalSize), infos[i].fileName, infos[i].author);
+				}
+
+				free(infos);
+			}
+
+			cc4group.delete(child);
+		}
+	}
+
+	return success ? EXIT_SUCCESS : EXIT_FAILURE;
+}
diff --git a/examples/c4ls_asChildPp.cpp b/examples/c4ls_asChildPp.cpp
new file mode 100644
index 0000000..019b781
--- /dev/null
+++ b/examples/c4ls_asChildPp.cpp
@@ -0,0 +1,79 @@
+#include "cppc4group.hpp"
+#include <iostream>
+
+const char* formatTime(int32_t time)
+{
+	time_t tTime = time;
+	static char ret[128];
+	strftime(ret, sizeof(ret), "%c", localtime(&tTime));
+	return ret;
+}
+
+const char* formatSize(uint32_t size)
+{
+	static char ret[128];
+	if(size < 1000)
+	{
+		snprintf(ret, 128, "%4u", size);
+		return ret;
+	}
+
+	static const char prefixes[] = " KMGTPE";
+
+	const char* prefix = prefixes;
+	uint32_t fract = 0;
+
+	while(size >= 1000 && *(prefix + 1) != '\0')
+	{
+		++prefix;
+		fract = size % 1000;
+		size /= 1000;
+	}
+
+	if(size < 10)
+	{
+		snprintf(ret, 128, "%1.1f%c", (float)size + (float)fract / 1000, *prefix);
+	}
+	else
+	{
+		snprintf(ret, 128, "%3u%c", size, *prefix);
+	}
+
+	return ret;
+}
+
+int main(int argc, char* argv[])
+{
+	if(argc != 3)
+	{
+		std::cerr << "USAGE: " << argv[0] << " <group> <subgroup>\n";
+		return EXIT_FAILURE;
+	}
+
+	CppC4Group g;
+	if(!g.openExisting(argv[1]))
+	{
+		std::cerr << "ERROR: Can't open group: " << g.getErrorMessage() << '\n';
+		return EXIT_FAILURE;
+	}
+
+	if(auto child = g.openAsChild(argv[2]))
+	{
+		if(auto entries = child->getEntryInfos())
+		{
+			for(const auto& entry : *entries)
+			{
+				std::cout << (entry.directory ? 'd' : entry.executable ? 'x' : ' ') << " " << formatTime(entry.modified) << ' ' << formatSize(entry.totalSize) << " " << entry.fileName << '\t' << entry.author << '\n';
+			}
+		}
+		else
+		{
+			std::cerr << "ERROR: Can't list subgroup contents: " << child->getErrorMessage();
+		}
+	}
+	else
+	{
+		std::cerr << "ERROR: Can't open subgroup: " << g.getErrorMessage();
+		return EXIT_FAILURE;
+	}
+}
\ No newline at end of file