split InitString asm into common/string.asm

1 files changed, 39 insertions, 0 deletions

diff --git a/common/string.asm b/common/string.asm
new file mode 100644
index 000000000..a871b4d2a
--- /dev/null
+++ b/common/string.asm
@@ -0,0 +1,39 @@
+InitString: ; 2ef6
+; Init a string of length c.
+	push hl
+	jr _InitString
+; 2ef9
+
+InitName: ; 2ef9
+; Intended for names, so this function is limited to ten characters.
+	push hl
+	ld c, 10
+; 2efc
+
+_InitString: ; 2efc
+; if the string pointed to by hl is empty (defined as "zero or more spaces
+; followed by a null"), then initialize it to the string pointed to by de.
+	push bc
+.loop
+	ld a, [hli]
+	cp "@"
+	jr z, .blank
+	cp " "
+	jr nz, .notblank
+	dec c
+	jr nz, .loop
+.blank
+	pop bc
+	ld l, e
+	ld h, d
+	pop de
+	ld b, 0
+	inc c
+	call CopyBytes
+	ret
+.notblank
+	pop bc
+	pop hl
+	ret
+; 2f17
+