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authorMattias Andrée <maandree@kth.se>2023-04-09 20:05:12 +0200
committerMattias Andrée <maandree@kth.se>2023-04-09 20:05:12 +0200
commitbbc81527ffbbb1cb26dfd145d492bdd613cd7ae2 (patch)
tree1bdaf0b894cf933f7d96951a516b037cde2f32c1 /strtou.c
parentImprove makefile and fix a bug (diff)
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Add tests and man pages
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'strtou.c')
-rw-r--r--strtou.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/strtou.c b/strtou.c
index b731ca4..7fe836f 100644
--- a/strtou.c
+++ b/strtou.c
@@ -4,10 +4,10 @@
unsigned int
-libsimple_strtou(const char *restrict nptr, char **restrict end, int base) /* TODO test, man */
+libsimple_strtou(const char *restrict nptr, char **restrict end, int base)
{
unsigned long int r = strtoul(nptr, end, base);
- if(r > UINT_MAX) {
+ if (r > UINT_MAX) {
r = UINT_MAX;
errno = ERANGE;
}
@@ -18,9 +18,41 @@ libsimple_strtou(const char *restrict nptr, char **restrict end, int base) /* TO
#else
#include "test.h"
+static void
+add_one(char *buf)
+{
+ char *p = strchr(buf, '\0');
+ while (*--p == '9')
+ *p = '0';
+ *p += 1;
+}
+
int
main(void)
{
+ char str[128];
+ char *e;
+ sprintf(str, "0x%x", UINT_MAX);
+ errno = 0;
+ assert(strtou(str, NULL, 0) == UINT_MAX && !errno);
+ assert(strtou(str, NULL, 16) == UINT_MAX && !errno);
+ assert(strtou(&str[2], NULL, 16) == UINT_MAX && !errno);
+ assert(strtou(str, NULL, 10) == 0 && !errno);
+ assert(strtou(str, &e, 0) == UINT_MAX && !*e && !errno);
+ assert(strtou(str, &e, 10) == 0 && *e == 'x' && !errno);
+ sprintf(str, "0x%x ", UINT_MAX);
+ assert(strtou(str, &e, 16) == UINT_MAX && *e == ' ' && !errno);
+ sprintf(str, "%u", UINT_MAX);
+ assert(strtou(str, &e, 10) == UINT_MAX && !*e && !errno);
+ assert(strtou("1234", &e, 10) == 1234 && !*e && !errno);
+ assert(strtou("1234", &e, 8) == 01234 && !*e && !errno);
+ assert(strtou("01234", &e, 0) == 01234 && !*e && !errno);
+ sprintf(str, "%u", UINT_MAX);
+ add_one(str);
+ assert(strtou(str, &e, 10) == UINT_MAX && !*e && errno == ERANGE);
+ errno = 0;
+ assert(!strtou("1", &e, -10000) && errno == EINVAL);
+ errno = 0;
return 0;
}