From 1ae9a10d56fca8fe585e77533c49e5c9d680ff12 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Sun, 19 Apr 2020 09:15:57 -0700
Subject: chore: removed bufio from tree

---
 src/bufio/reader.c | 198 -----------------------------------------------------
 1 file changed, 198 deletions(-)
 delete mode 100644 src/bufio/reader.c

(limited to 'src/bufio/reader.c')

diff --git a/src/bufio/reader.c b/src/bufio/reader.c
deleted file mode 100644
index 915c531..0000000
--- a/src/bufio/reader.c
+++ /dev/null
@@ -1,198 +0,0 @@
-#include "impl.h"
-
-struct bufio·Reader
-{
-    io·Reader r;
-    Buffer    buf;
-};
-
-bufio·Reader*
-bufio·newreader(io·Reader r)
-{
-    bufio·Reader* br = newbuffer(offsetof(bufio·Reader, buf), 0);
-    br->r            = r;
-    br->buf.pos      = br->buf.end;
-
-    return br;
-}
-
-error
-bufio·freereader(bufio·Reader* r)
-{
-    free(r);
-    return 0;
-}
-
-static int
-refill(bufio·Reader* r)
-{
-    if (r->buf.eof) return BUF·err;
-
-    int nr = r->r.read(r->r.impl, r->buf.base, r->buf.size);
-    if (nr <= 0) {
-        r->buf.eof = 1;
-        goto end;
-    }
-
-    r->buf.off += nr;
-    r->buf.pos = r->buf.base;
-
-    if (nr < r->buf.size) {
-        int d      = (r->buf.size - nr);
-        r->buf.eof = 1;
-        memmove(r->buf.pos + d, r->buf.pos, nr);
-        memmove(r->buf.pos + d - BUF·ungets, r->buf.b, BUF·ungets);
-        r->buf.pos += d;
-    }
-end:
-    return nr;
-}
-
-// Read will attempt to read n bytes from the buffer, starting at the offet
-// offset. Returns the actual number of bytes read from the stream. Input buf
-// can not alias b
-int
-bufio·read(bufio·Reader* r, byte* buf, int count)
-{
-    if (count == 0 || buf == nil || r->buf.off == BUF·eof) return BUF·err;
-
-    int   remain = count;
-    byte* rdr    = buf;
-
-    int n, nr;
-    while (remain) {
-        int bdiff = r->buf.end - r->buf.pos;
-        n         = (bdiff > remain) ? remain : bdiff;
-        if (!n) {
-            if (r->buf.eof | (refill(r) <= 0)) break;
-        }
-
-        memmove(rdr, r->buf.pos, n);
-        rdr += n;
-        r->buf.pos += n;
-        remain -= n;
-    }
-    return count - remain;
-}
-
-int
-bufio·readln(bufio·Reader* r, byte* buf, int count, error* err)
-{
-    byte *it, *end, *cnt;
-    int   nb;
-Search:
-    nb  = 0;
-    cnt = r->buf.pos + count;
-    end = MIN(r->buf.end, cnt);
-
-    for (it = r->buf.pos; it != end && *it != EOF; ++it, nb++) {
-        if (*it == '\n') {
-            *err = 0;
-            goto End;
-        }
-    }
-
-    if (it == r->buf.end) {
-        memmove(buf, r->buf.pos, nb);
-        r->buf.pos = r->buf.end;
-        if (refill(r) <= 0) {
-            *err = 1;
-            return nb;
-        }
-        Assert(nb < count);
-        count -= nb;
-        buf += nb;
-        goto Search;
-    }
-
-    if (it == cnt) {
-        Assert(nb == count);
-        *err = 2;
-    }
-
-    Assert(*it == EOF || *err == 2);
-
-End:
-    memmove(buf, r->buf.pos, nb);
-    r->buf.pos = it;
-    return nb;
-}
-
-// advanceBuffer moves the buffer ahead by n without reading.
-void
-bufio·discard(bufio·Reader* r, int count)
-{
-    if (count > BUF·max) 
-        panicf("can't discard %d bytes", count);
-    byte stack[BUF·max];
-
-    bufio·read(r, stack, count);
-}
-
-// ReadByte reads a single byte from the buffered stream.
-byte
-bufio·get(bufio·Reader* r)
-{
-getbyte:
-    if (r->buf.pos < r->buf.end) { return *r->buf.pos++; }
-
-    memmove(r->buf.b, r->buf.end - BUF·ungets, BUF·ungets);
-    if (refill(r) <= 0) { return EOF; }
-    goto getbyte;
-}
-
-error
-bufio·unget(bufio·Reader* r)
-{
-    if (r->buf.pos == r->buf.b) { return BUF·err; }
-
-    r->buf.pos--;
-    return 0;
-}
-
-byte
-bufio·peek(bufio·Reader* r)
-{
-    if (r->buf.pos != r->buf.end) return *r->buf.pos;
-
-    byte* old = r->buf.pos;
-    byte  c   = bufio·get(r);
-    if (r->buf.pos != old && (bufio·unget(r) == BUF·err)) {
-        panicf("buffer failure, can't move backwards");
-    }
-
-    return c;
-}
-
-// peekBytes has the same behavior as read, but doesn't advance the buffer.
-int
-bufio·peekfor(bufio·Reader* r, byte* buf, int count)
-{
-    if (count == 0 || buf == nil) return 0;
-
-    int delta = r->buf.end - r->buf.pos;
-    if (delta > count) {
-        memcpy(buf, r->buf.pos, count);
-        return count;
-    }
-
-    byte c, *it;
-    for (it = buf; it != buf + count; ++it) {
-        c   = bufio·get(r);
-        *it = c;
-        if (c == EOF) break;
-    }
-
-    int diff = it - buf;
-    for (int n = 0; n < diff; n++) {
-        bufio·unget(r);
-    }
-
-    return diff;
-}
-
-void
-bufio·clear(bufio·Reader* r)
-{
-    memset(r->buf.b, 0, r->buf.size);
-}
-- 
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