Add string libraries

Add a couple string lib functions to start with video text development.

Signed-off-by: Carlos Maiolino <[email protected]>

2 files changed, 31 insertions, 0 deletions

diff --git a/src/lib/string.c b/src/lib/string.c
new file mode 100644
index 0000000..39e435b
--- /dev/null
+++ b/src/lib/string.c
@@ -0,0 +1,22 @@
+#include <stddef.h>
+
+size_t strlen(const char *s)
+{
+	size_t c = 0;
+
+	while (s[c])
+		c++;
+
+	return c;
+}
+
+char *strcpy(char *restrict dst, const char *restrict src)
+{
+	size_t pos = 0;
+	size_t len = strlen(src) + 1;
+
+	for(pos = 0; pos <= len; pos++)
+		dst[pos] = src[pos];
+
+	return dst;
+}
diff --git a/src/lib/string.h b/src/lib/string.h
new file mode 100644
index 0000000..72585ac
--- /dev/null
+++ b/src/lib/string.h
@@ -0,0 +1,9 @@
+#ifndef STRING_H
+#define STRING_H
+
+#include <stddef.h>
+
+size_t strlen(const char *s);
+char *strcpy(char *restrict dst, const char *restrict src);
+
+#endif /* STRING_H */