From c8998127732765aabba020ece5e42befc6f1e305 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 27 Jul 2022 21:32:39 +0200
Subject: user/libc: a shitty fgets()
---
src/user/lib/file.c | 12 ++++++++++++
src/user/lib/include/stdio.h | 1 +
2 files changed, 13 insertions(+)
(limited to 'src/user/lib')
diff --git a/src/user/lib/file.c b/src/user/lib/file.c
index bd6bc56..a26c8bb 100644
--- a/src/user/lib/file.c
+++ b/src/user/lib/file.c
@@ -143,6 +143,18 @@ size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restri
return nitems;
}
+char *fgets(char *buf, int size, FILE *f) {
+ char c = '\0';
+ size_t pos = 0;
+ while (pos < (size-1) && c != '\n' && fread(&c, 1, 1, f))
+ buf[pos++] = c;
+ buf[pos++] = '\0';
+
+ if (f->eof && pos == 1) return NULL;
+ if (f->error) return NULL;
+ return buf;
+}
+
int fseek(FILE *f, long offset, int whence) {
if (fflush(f))
return -1;
diff --git a/src/user/lib/include/stdio.h b/src/user/lib/include/stdio.h
index eb59793..bf9e09e 100644
--- a/src/user/lib/include/stdio.h
+++ b/src/user/lib/include/stdio.h
@@ -25,6 +25,7 @@ int fflush(FILE *f);
size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict);
+char *fgets(char *buf, int size, FILE *f);
int fseek(FILE *f, long offset, int whence);
int feof(FILE *);
--
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