Add a bunch of function and macros

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 115 insertions, 0 deletions

diff --git a/stpntolower.c b/stpntolower.c
new file mode 100644
index 0000000..9fc4466
--- /dev/null
+++ b/stpntolower.c
@@ -0,0 +1,115 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsimple.h"
+#ifndef TEST
+
+
+char *
+libsimple_stpntolower(char *d, const char *s, size_t n) /* TODO man */
+{
+	size_t i;
+	char *ret;
+	if (d == s) {
+		for (; n && *d; d++, n--)
+			*d = tolower(*d);
+		return d;
+	} else if (d < s) {
+		for (; n && *s; d++, s++, n--)
+			*d = tolower(*s);
+		if (n)
+			*d = '\0';
+		return d;
+	} else {
+		for (i = 0; i < n && s[i]; i++);
+		ret = &d[i];
+		if (i != n)
+			d[i] = tolower(s[i]);
+		while (i--)
+			d[i] = tolower(s[i]);
+		return ret;
+	}
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	char buf[100];
+
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], SIZE_MAX), ""));
+	assert(!strcmp(buf, "ABCabcdeabcde12345"));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], SIZE_MAX), ""));
+	assert(!strcmp(buf, "deabcde12345"));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], SIZE_MAX), ""));
+	assert(!strcmp(buf, "abcdeabcde12345"));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], SIZE_MAX), "abcdeabcde12345"));
+	assert(!strcmp(buf, "ABCabcdeabcde12345"));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], SIZE_MAX), "deabcde12345"));
+	assert(!strcmp(buf, "deabcde12345"));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], SIZE_MAX), "abcdeabcde12345"));
+	assert(!strcmp(buf, "abcdeabcde12345"));
+
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	buf[18] = 'X';
+	assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], 15), "X"));
+	assert(!strcmp(buf, "ABCabcdeabcde12345X"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], 12), "345"));
+	assert(!strcmp(buf, "deabcde12345345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345X");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], 15), "X"));
+	assert(!strcmp(buf, "abcdeabcde12345X"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	buf[18] = 'X';
+	assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], 15), "abcdeabcde12345X"));
+	assert(!strcmp(buf, "ABCabcdeabcde12345X"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], 12), "deabcde12345345"));
+	assert(!strcmp(buf, "deabcde12345345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345X");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], 15), "abcdeabcde12345X"));
+	assert(!strcmp(buf, "abcdeabcde12345X"));
+
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[3], &buf[0], 0), "DEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[3], 0), "ABCDEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_stpntolower(&buf[0], &buf[0], 0), "ABCDEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[3], &buf[0], 0), "DEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[3], 0), "ABCDEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+	memset(buf, 0, sizeof(buf));
+	stpcpy(buf, "ABCDEabcde12345");
+	assert(!strcmpnul(libsimple_strntolower(&buf[0], &buf[0], 0), "ABCDEabcde12345"));
+	assert(!strcmp(buf, "ABCDEabcde12345"));
+
+	return 0;
+}
+
+#endif