scc

commit d21aa5a5a185cacd7a63439788287ef6564ad5e2
parent aef615310c0729e97e4ad5a2e4206266660679a2
Author: Roberto E. Vargas Caballero <k0ga@shike2.net>
Date:   Wed, 26 Mar 2025 14:26:21 +0100

libc/wchar: Add wcsspn()

Diffstat:
M
src/libc/objs/common-objs.mk
 | 
1
+
A
src/libc/wchar/wcsspn.c
 | 
14
++++++++++++++
M
tests/libc/execute/.gitignore
 | 
1
+
A
tests/libc/execute/0061-wcsspn.c
 | 
25
+++++++++++++++++++++++++
M
tests/libc/execute/libc-tests.lst
 | 
1
+

5 files changed, 42 insertions(+), 0 deletions(-)
diff --git a/src/libc/objs/common-objs.mk b/src/libc/objs/common-objs.mk
@@ -137,6 +137,7 @@ COMMON_OBJS =\
 	wchar/wcsrchr.$O\
 	wchar/wcsstr.$O\
 	wchar/wcsxfrm.$O\
+	wchar/wcsspn.$O\
 	wchar/wcsrtombs.$O\
 	wchar/wcwidth.$O\
 	wchar/wmemchr.$O\
diff --git a/src/libc/wchar/wcsspn.c b/src/libc/wchar/wcsspn.c
@@ -0,0 +1,14 @@
+#include <wchar.h>
+
+#undef wcsspn
+
+size_t
+wcsspn(const wchar_t *s, const wchar_t *accept)
+{
+	wchar_t wc;
+        const wchar_t *p;
+
+        for (p = s; (wc = *p) && wcschr(accept, wc); p++)
+		;
+        return p - s;
+}
diff --git a/tests/libc/execute/.gitignore b/tests/libc/execute/.gitignore
@@ -57,4 +57,5 @@
 0058-wcsrchr
 0059-wcsstr
 0060-wcsxfrm
+0061-wcsspn
 test.log
diff --git a/tests/libc/execute/0061-wcsspn.c b/tests/libc/execute/0061-wcsspn.c
@@ -0,0 +1,25 @@
+#include <assert.h>
+#include <stdio.h>
+#include <wchar.h>
+
+/*
+output:
+testing
+done
+end:
+*/
+
+int
+main()
+{
+	puts("testing");
+	assert(wcsspn(L"abccdef", L"cba") == 4);
+	assert(wcsspn(L"abcg", L"cba0") == 3);
+	assert(wcsspn(L"", L"abc") == 0);
+	assert(wcsspn(L"abc", L"") == 0);
+	assert(wcsspn(L"", L"") == 0);
+	assert(wcsspn(L"abc", L"def") == 0);
+	puts("done");
+
+	return 0;
+}
diff --git a/tests/libc/execute/libc-tests.lst b/tests/libc/execute/libc-tests.lst
@@ -56,3 +56,4 @@
 0058-wcsrchr
 0059-wcsstr
 0060-wcsxfrm
+0061-wcsspn