lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/lib/mlibc/tests/ansi/sscanf.c b/lib/mlibc/tests/ansi/sscanf.c
new file mode 100644
index 0000000..f3a881f
--- /dev/null
+++ b/lib/mlibc/tests/ansi/sscanf.c
@@ -0,0 +1,143 @@
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+
+struct format_test_cases {
+	const char *format;
+	const char *data;
+	int expected_int;
+	enum {
+		T_INT,
+		T_UINT,
+		T_CHAR,
+		T_NONE,
+	} type;
+	int ret;
+} formats[] = {
+	{"%i", "0x420", 0x420, T_INT, 1},
+	{"%i", "0420", 0420, T_INT, 1},
+	{"%i", "420", 420, T_INT, 1},
+	{"%i", "-420", -420, T_INT, 1},
+	{"%d", "-12345", -12345, T_INT, 1},
+	{"%u", "69", 69, T_UINT, 1},
+	{"%u", "0420", 420, T_UINT, 1},
+	{"%o", "0420", 0420, T_UINT, 1},
+	{"%x", "0xCB7", 0xCB7, T_UINT, 1},
+	{"%%", "%", 0, T_NONE, 0},
+	{"%c", "         I am not a fan of this solution.", ' ', T_CHAR, 1},
+	{" %c", "           CBT (capybara therapy)", 'C', T_CHAR, 1},
+};
+
+#pragma GCC diagnostic ignored "-Wformat-security"
+
+static void test_matrix() {
+	for(size_t i = 0; i < (sizeof(formats) / sizeof(*formats)); i++) {
+		struct format_test_cases *f = &formats[i];
+		int ret = -1;
+		int data_int;
+		unsigned int data_uint;
+		char data_char;
+
+		switch(f->type) {
+			case T_INT: {
+				ret = sscanf(f->data, f->format, &data_int);
+				assert(data_int == f->expected_int);
+				break;
+			}
+			case T_UINT: {
+				ret = sscanf(f->data, f->format, &data_uint);
+				assert(data_uint == (unsigned int) f->expected_int);
+				break;
+			}
+			case T_CHAR: {
+				ret = sscanf(f->data, f->format, &data_char);
+				assert(data_char == (unsigned char) f->expected_int);
+				break;
+			}
+			case T_NONE: {
+				ret = sscanf(f->data, f->format);
+				break;
+			}
+
+		}
+
+		assert(ret == f->ret);
+	}
+}
+
+int main() {
+	{
+		int x = 0;
+		char buf[] = "12345";
+		sscanf(buf, "%d", &x);
+		assert(x == 12345);
+	}
+
+	{
+		char c;
+		int n1;
+		int n2;
+		char buf[] = "z$ 7 5 440";;
+		int count = sscanf(buf, "%*c%c %d %*d %d", &c, &n1, &n2);
+		assert(count == 3);
+		assert(c == '$');
+		assert(n1 == 7);
+		assert(n2 == 440);
+	}
+
+	{
+		// From dsda-doom
+		char buf[] = "process_priority               0\n";
+		char def[80], strparm[128];
+		memset(def, '!', 80);
+		memset(strparm, '!', 128);
+		sscanf(buf, "%s %[^\n]\n", def, strparm);
+		assert(!strcmp(def, "process_priority"));
+		assert(!strcmp(strparm, "0"));
+	}
+
+	{
+		char buf[] = "fffff100";
+		unsigned long y = 0;
+		sscanf(buf, "%lx", &y);
+		assert(y == 0xfffff100);
+	}
+
+#if !defined(__i386__)
+	{
+		char buf[] = "fffffffff100";
+		unsigned long y = 0;
+		sscanf(buf, "%lx", &y);
+		assert(y == 0xfffffffff100);
+	}
+#endif
+
+	{
+		char buf[] = "410dc000";
+		unsigned long y = 0;
+		sscanf(buf, "%lx", &y);
+		assert(y == 0x410dc000);
+	}
+
+	{
+		// From webkitgtk
+		char buf[] = "MemTotal:       16299664 kB\n";
+		char token[51] = {0};
+		size_t amount = 0;
+		int ret = sscanf(buf, "%50s%zukB", token, &amount);
+		assert(ret == 2);
+		assert(!strcmp(token, "MemTotal:"));
+		assert(amount == 16299664);
+	}
+
+	{
+		char buf[] = "SIGINT";
+		int sig;
+		int ret = sscanf(buf, "%d", &sig);
+		assert(!ret);
+	}
+
+	test_matrix();
+
+	return 0;
+}