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Further improve scanf

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Justine Tunney 2023-08-21 16:55:29 -07:00
parent 6ef2a471e4
commit 7e08a97cea
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GPG key ID: BE714B4575D6E328
3 changed files with 76 additions and 37 deletions
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31
test/libc/stdio/sscanf_test.c
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@ -21,7 +21,10 @@
#include "libc/intrin/bits.h"
#include "libc/inttypes.h"
#include "libc/limits.h"
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/stdio/internal.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
#define sscanf1(STR, FMT) \
@ -336,3 +339,31 @@ TEST(sscanf, lupluser) {
EXPECT_EQ(1, sscanf("+123", "%li", &x));
EXPECT_EQ(123, x);
}
TEST(fscanf, stuff) {
int x;
char *s = "1 12 123\n"
"4 44\n";
FILE *f = fmemopen(s, strlen(s), "r+");
EXPECT_EQ(1, fscanf(f, "%d", &x));
EXPECT_EQ(1, x);
EXPECT_EQ(1, fscanf(f, "%d", &x));
EXPECT_EQ(12, x);
EXPECT_EQ(1, fscanf(f, "%d", &x));
EXPECT_EQ(123, x);
EXPECT_EQ(1, fscanf(f, "%d", &x));
EXPECT_EQ(4, x);
EXPECT_EQ(1, fscanf(f, "%d", &x));
EXPECT_EQ(44, x);
EXPECT_EQ(-1, fscanf(f, "%d", &x));
fclose(f);
}
TEST(fscanf, wantDecimalButGotLetter_returnsZeroMatches) {
int x = 666;
char *s = "a1\n";
FILE *f = fmemopen(s, strlen(s), "r+");
EXPECT_EQ(0, fscanf(f, "%d", &x));
EXPECT_EQ(666, x);
fclose(f);
}