libc/wchar: Add wcsxfrm() - scc - simple c99 compiler
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---
(DIR) commit aef615310c0729e97e4ad5a2e4206266660679a2
(DIR) parent 09245abd272928c778c739e2402517a464b1a678
(HTM) Author: Roberto E. Vargas Caballero <k0ga@shike2.net>
Date: Wed, 26 Mar 2025 14:14:28 +0100
libc/wchar: Add wcsxfrm()
Diffstat:
M src/libc/objs/common-objs.mk | 1 +
A src/libc/wchar/wcsxfrm.c | 13 +++++++++++++
M tests/libc/execute/.gitignore | 1 +
A tests/libc/execute/0060-wcsxfrm.c | 27 +++++++++++++++++++++++++++
M tests/libc/execute/libc-tests.lst | 1 +
5 files changed, 43 insertions(+), 0 deletions(-)
---
(DIR) diff --git a/src/libc/objs/common-objs.mk b/src/libc/objs/common-objs.mk
@@ -136,6 +136,7 @@ COMMON_OBJS =\
wchar/wcschr.$O\
wchar/wcsrchr.$O\
wchar/wcsstr.$O\
+ wchar/wcsxfrm.$O\
wchar/wcsrtombs.$O\
wchar/wcwidth.$O\
wchar/wmemchr.$O\
(DIR) diff --git a/src/libc/wchar/wcsxfrm.c b/src/libc/wchar/wcsxfrm.c
@@ -0,0 +1,13 @@
+#include <wchar.h>
+
+#undef wcsxfrm
+
+size_t
+wcsxfrm(wchar_t *dst, const wchar_t *src, size_t n)
+{
+ size_t len = wcslen(src);
+
+ if (len < n)
+ wcscpy(dst, src);
+ return len;
+}
(DIR) diff --git a/tests/libc/execute/.gitignore b/tests/libc/execute/.gitignore
@@ -56,4 +56,5 @@
0057-wcschr
0058-wcsrchr
0059-wcsstr
+0060-wcsxfrm
test.log
(DIR) diff --git a/tests/libc/execute/0060-wcsxfrm.c b/tests/libc/execute/0060-wcsxfrm.c
@@ -0,0 +1,27 @@
+#include <assert.h>
+#include <stdio.h>
+#include <wchar.h>
+
+/*
+output:
+testing
+done
+end:
+*/
+
+int
+main()
+{
+ wchar_t buf[40];
+ size_t n;
+
+ puts("testing");
+
+ assert(wcsxfrm(buf, L"test", 40) == 4);
+ assert(wcsxfrm(buf, L"", 0) == 0);
+ assert(wcsxfrm(NULL, L"abc", 0) > 0);
+
+ puts("done");
+
+ return 0;
+}
(DIR) diff --git a/tests/libc/execute/libc-tests.lst b/tests/libc/execute/libc-tests.lst
@@ -55,3 +55,4 @@
0057-wcschr
0058-wcsrchr
0059-wcsstr
+0060-wcsxfrm