Add a more usefull getline-like function to libfstream

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 164 insertions, 0 deletions

diff --git a/tests/get_line.c b/tests/get_line.c
new file mode 100644
index 0000000..c317c0e
--- /dev/null
+++ b/tests/get_line.c
@@ -0,0 +1,164 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * get_line.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "config.h"
+
+#include "fstream.h"
+#include "test.h"
+
+typedef struct {
+	size_t line_num;
+	const char *str;
+} line_t;
+
+static void run_test_case(const line_t *lines, size_t count,
+			  int flags)
+{
+	size_t i, line_num, old_line_num;
+	istream_t *fp;
+	char *line;
+	int ret;
+
+	fp = istream_open_file(STRVALUE(TESTFILE));
+	TEST_NOT_NULL(fp);
+
+	line_num = 1;
+	line = NULL;
+
+	for (i = 0; i < count; ++i) {
+		old_line_num = line_num;
+		ret = istream_get_line(fp, &line, &line_num, flags);
+
+		TEST_ASSERT(line_num >= old_line_num);
+		TEST_EQUAL_I(ret, 0);
+		TEST_NOT_NULL(line);
+
+		TEST_EQUAL_UI(line_num, lines[i].line_num);
+		TEST_STR_EQUAL(line, lines[i].str);
+
+		free(line);
+		line = NULL;
+		line_num += 1;
+	}
+
+	ret = istream_get_line(fp, &line, &line_num, flags);
+	TEST_ASSERT(ret > 0);
+
+	sqfs_destroy(fp);
+}
+
+static const line_t lines_raw[] = {
+	{ 1, "" },
+	{ 2, "The quick" },
+	{ 3, "  " },
+	{ 4, "  brown fox  " },
+	{ 5, "" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 9, "" },
+	{ 10, "dog" },
+	{ 11, "" },
+};
+
+static const line_t lines_ltrim[] = {
+	{ 1, "" },
+	{ 2, "The quick" },
+	{ 3, "" },
+	{ 4, "brown fox  " },
+	{ 5, "" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 9, "" },
+	{ 10, "dog" },
+	{ 11, "" },
+};
+
+static const line_t lines_rtrim[] = {
+	{ 1, "" },
+	{ 2, "The quick" },
+	{ 3, "" },
+	{ 4, "  brown fox" },
+	{ 5, "" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 9, "" },
+	{ 10, "dog" },
+	{ 11, "" },
+};
+
+static const line_t lines_trim[] = {
+	{ 1, "" },
+	{ 2, "The quick" },
+	{ 3, "" },
+	{ 4, "brown fox" },
+	{ 5, "" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 9, "" },
+	{ 10, "dog" },
+	{ 11, "" },
+};
+
+static const line_t lines_no_empty[] = {
+	{ 2, "The quick" },
+	{ 3, "  " },
+	{ 4, "  brown fox  " },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 10, "dog" },
+};
+
+static const line_t lines_no_empty_ltrim[] = {
+	{ 2, "The quick" },
+	{ 4, "brown fox  " },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 10, "dog" },
+};
+
+static const line_t lines_no_empty_rtrim[] = {
+	{ 2, "The quick" },
+	{ 4, "  brown fox" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 10, "dog" },
+};
+
+static const line_t lines_no_empty_trim[] = {
+	{ 2, "The quick" },
+	{ 4, "brown fox" },
+	{ 6, "jumps over" },
+	{ 7, "the" },
+	{ 8, "lazy" },
+	{ 10, "dog" },
+};
+
+int main(void)
+{
+	run_test_case(lines_raw, 11, 0);
+	run_test_case(lines_ltrim, 11, ISTREAM_LINE_LTRIM);
+	run_test_case(lines_rtrim, 11, ISTREAM_LINE_RTRIM);
+	run_test_case(lines_trim, 11,
+		      ISTREAM_LINE_LTRIM | ISTREAM_LINE_RTRIM);
+
+	run_test_case(lines_no_empty, 7, ISTREAM_LINE_SKIP_EMPTY);
+	run_test_case(lines_no_empty_ltrim, 6,
+		      ISTREAM_LINE_SKIP_EMPTY | ISTREAM_LINE_LTRIM);
+	run_test_case(lines_no_empty_rtrim, 6,
+		      ISTREAM_LINE_SKIP_EMPTY | ISTREAM_LINE_RTRIM);
+	run_test_case(lines_no_empty_trim, 6,
+		      ISTREAM_LINE_SKIP_EMPTY | ISTREAM_LINE_LTRIM |
+		      ISTREAM_LINE_RTRIM);
+
+	return EXIT_SUCCESS;
+}