import the plan 9 libraries libc (lib9) and libbio into the tree.
remove the dependency on /home/r.
SVN=122482
diff --git a/src/libbio/Makefile b/src/libbio/Makefile
new file mode 100644
index 0000000..eddeac0
--- /dev/null
+++ b/src/libbio/Makefile
@@ -0,0 +1,64 @@
+# Derived from http://code.google.com/p/inferno-os/source/browse/libbio/mkfile
+#
+# Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+# Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+# Portions Copyright © 2009 The Go Authors. All rights reserved.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+CFLAGS=-I$(GOROOT)/include
+O=o
+
+LIB=libbio.a
+
+OFILES=\
+ bbuffered.$O\
+ bfildes.$O\
+ bflush.$O\
+ bgetc.$O\
+ bgetrune.$O\
+ bgetd.$O\
+ binit.$O\
+ boffset.$O\
+ bprint.$O\
+ bputc.$O\
+ bputrune.$O\
+ brdline.$O\
+ brdstr.$O\
+ bread.$O\
+ bseek.$O\
+ bwrite.$O\
+
+HFILES=\
+ $(GOROOT)/include/bio.h\
+
+install: $(LIB)
+ cp $(LIB) $(GOROOT)/lib
+
+$(LIB): $(OFILES)
+ ar rsc $(LIB) $(OFILES)
+
+$(OFILES): $(HFILES)
+
+y.tab.c: $(YFILES)
+ yacc $(YFLAGS) $(YFILES)
+
+clean:
+ rm -f $(OFILES) *.6 6.out $(LIB)
+
diff --git a/src/libbio/bbuffered.c b/src/libbio/bbuffered.c
new file mode 100644
index 0000000..2ddb29b
--- /dev/null
+++ b/src/libbio/bbuffered.c
@@ -0,0 +1,46 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bbuffered.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bbuffered(Biobuf *bp)
+{
+ switch(bp->state) {
+ case Bracteof:
+ case Bractive:
+ return -bp->icount;
+
+ case Bwactive:
+ return bp->bsize + bp->ocount;
+
+ case Binactive:
+ return 0;
+ }
+ fprint(2, "Bbuffered: unknown state %d\n", bp->state);
+ return 0;
+}
diff --git a/src/libbio/bfildes.c b/src/libbio/bfildes.c
new file mode 100644
index 0000000..aef1f70
--- /dev/null
+++ b/src/libbio/bfildes.c
@@ -0,0 +1,35 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bfildes.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bfildes(Biobuf *bp)
+{
+
+ return bp->fid;
+}
diff --git a/src/libbio/bflush.c b/src/libbio/bflush.c
new file mode 100644
index 0000000..8a071cb
--- /dev/null
+++ b/src/libbio/bflush.c
@@ -0,0 +1,59 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bflush.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bflush(Biobuf *bp)
+{
+ int n, c;
+
+ switch(bp->state) {
+ case Bwactive:
+ n = bp->bsize+bp->ocount;
+ if(n == 0)
+ return 0;
+ c = write(bp->fid, bp->bbuf, n);
+ if(n == c) {
+ bp->offset += n;
+ bp->ocount = -bp->bsize;
+ return 0;
+ }
+ bp->state = Binactive;
+ bp->ocount = 0;
+ break;
+
+ case Bracteof:
+ bp->state = Bractive;
+
+ case Bractive:
+ bp->icount = 0;
+ bp->gbuf = bp->ebuf;
+ return 0;
+ }
+ return Beof;
+}
diff --git a/src/libbio/bgetc.c b/src/libbio/bgetc.c
new file mode 100644
index 0000000..52ed241
--- /dev/null
+++ b/src/libbio/bgetc.c
@@ -0,0 +1,79 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bgetc.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bgetc(Biobuf *bp)
+{
+ int i;
+
+loop:
+ i = bp->icount;
+ if(i != 0) {
+ bp->icount = i+1;
+ return bp->ebuf[i];
+ }
+ if(bp->state != Bractive) {
+ if(bp->state == Bracteof)
+ bp->state = Bractive;
+ return Beof;
+ }
+ /*
+ * get next buffer, try to keep Bungetsize
+ * characters pre-catenated from the previous
+ * buffer to allow that many ungets.
+ */
+ memmove(bp->bbuf-Bungetsize, bp->ebuf-Bungetsize, Bungetsize);
+ i = read(bp->fid, bp->bbuf, bp->bsize);
+ bp->gbuf = bp->bbuf;
+ if(i <= 0) {
+ bp->state = Bracteof;
+ if(i < 0)
+ bp->state = Binactive;
+ return Beof;
+ }
+ if(i < bp->bsize) {
+ memmove(bp->ebuf-i-Bungetsize, bp->bbuf-Bungetsize, i+Bungetsize);
+ bp->gbuf = bp->ebuf-i;
+ }
+ bp->icount = -i;
+ bp->offset += i;
+ goto loop;
+}
+
+int
+Bungetc(Biobuf *bp)
+{
+
+ if(bp->state == Bracteof)
+ bp->state = Bractive;
+ if(bp->state != Bractive)
+ return Beof;
+ bp->icount--;
+ return 1;
+}
diff --git a/src/libbio/bgetd.c b/src/libbio/bgetd.c
new file mode 100644
index 0000000..cf76a75
--- /dev/null
+++ b/src/libbio/bgetd.c
@@ -0,0 +1,62 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bgetd.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+struct bgetd
+{
+ Biobuf* b;
+ int eof;
+};
+
+static int
+Bgetdf(void *vp)
+{
+ int c;
+ struct bgetd *bg = vp;
+
+ c = Bgetc(bg->b);
+ if(c == Beof)
+ bg->eof = 1;
+ return c;
+}
+
+int
+Bgetd(Biobuf *bp, double *dp)
+{
+ double d;
+ struct bgetd b;
+
+ b.b = bp;
+ b.eof = 0;
+ d = fmtcharstod(Bgetdf, &b);
+ if(b.eof)
+ return -1;
+ Bungetc(bp);
+ *dp = d;
+ return 1;
+}
diff --git a/src/libbio/bgetrune.c b/src/libbio/bgetrune.c
new file mode 100644
index 0000000..caeb0a8
--- /dev/null
+++ b/src/libbio/bgetrune.c
@@ -0,0 +1,73 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bgetrune.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <utf.h>
+
+long
+Bgetrune(Biobuf *bp)
+{
+ int c, i;
+ Rune rune;
+ char str[4];
+
+ c = Bgetc(bp);
+ if(c < Runeself) { /* one char */
+ bp->runesize = 1;
+ return c;
+ }
+ str[0] = c;
+
+ for(i=1;;) {
+ c = Bgetc(bp);
+ if(c < 0)
+ return c;
+ str[i++] = c;
+
+ if(fullrune(str, i)) {
+ bp->runesize = chartorune(&rune, str);
+ while(i > bp->runesize) {
+ Bungetc(bp);
+ i--;
+ }
+ return rune;
+ }
+ }
+}
+
+int
+Bungetrune(Biobuf *bp)
+{
+
+ if(bp->state == Bracteof)
+ bp->state = Bractive;
+ if(bp->state != Bractive)
+ return Beof;
+ bp->icount -= bp->runesize;
+ bp->runesize = 0;
+ return 1;
+}
diff --git a/src/libbio/binit.c b/src/libbio/binit.c
new file mode 100644
index 0000000..6eb7776
--- /dev/null
+++ b/src/libbio/binit.c
@@ -0,0 +1,179 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/binit.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+enum
+{
+ MAXBUFS = 20
+};
+
+static Biobuf* wbufs[MAXBUFS];
+static int atexitflag;
+
+static
+void
+batexit(void)
+{
+ Biobuf *bp;
+ int i;
+
+ for(i=0; i<MAXBUFS; i++) {
+ bp = wbufs[i];
+ if(bp != 0) {
+ wbufs[i] = 0;
+ Bflush(bp);
+ }
+ }
+}
+
+static
+void
+deinstall(Biobuf *bp)
+{
+ int i;
+
+ for(i=0; i<MAXBUFS; i++)
+ if(wbufs[i] == bp)
+ wbufs[i] = 0;
+}
+
+static
+void
+install(Biobuf *bp)
+{
+ int i;
+
+ deinstall(bp);
+ for(i=0; i<MAXBUFS; i++)
+ if(wbufs[i] == 0) {
+ wbufs[i] = bp;
+ break;
+ }
+ if(atexitflag == 0) {
+ atexitflag = 1;
+ atexit(batexit);
+ }
+}
+
+int
+Binits(Biobuf *bp, int f, int mode, unsigned char *p, int size)
+{
+
+ p += Bungetsize; /* make room for Bungets */
+ size -= Bungetsize;
+
+ switch(mode&~(OCEXEC|ORCLOSE|OTRUNC)) {
+ default:
+ fprint(2, "Bopen: unknown mode %d\n", mode);
+ return Beof;
+
+ case OREAD:
+ bp->state = Bractive;
+ bp->ocount = 0;
+ break;
+
+ case OWRITE:
+ install(bp);
+ bp->state = Bwactive;
+ bp->ocount = -size;
+ break;
+ }
+ bp->bbuf = p;
+ bp->ebuf = p+size;
+ bp->bsize = size;
+ bp->icount = 0;
+ bp->gbuf = bp->ebuf;
+ bp->fid = f;
+ bp->flag = 0;
+ bp->rdline = 0;
+ bp->offset = 0;
+ bp->runesize = 0;
+ return 0;
+}
+
+
+int
+Binit(Biobuf *bp, int f, int mode)
+{
+ return Binits(bp, f, mode, bp->b, sizeof(bp->b));
+}
+
+Biobuf*
+Bfdopen(int f, int mode)
+{
+ Biobuf *bp;
+
+ bp = malloc(sizeof(Biobuf));
+ if(bp == 0)
+ return 0;
+ Binits(bp, f, mode, bp->b, sizeof(bp->b));
+ bp->flag = Bmagic;
+ return bp;
+}
+
+Biobuf*
+Bopen(char *name, int mode)
+{
+ Biobuf *bp;
+ int f;
+
+ switch(mode&~(OCEXEC|ORCLOSE|OTRUNC)) {
+ default:
+ fprint(2, "Bopen: unknown mode %d\n", mode);
+ return 0;
+
+ case OREAD:
+ f = open(name, OREAD);
+ if(f < 0)
+ return 0;
+ break;
+
+ case OWRITE:
+ f = creat(name, 0666);
+ if(f < 0)
+ return 0;
+ }
+ bp = Bfdopen(f, mode);
+ if(bp == 0)
+ close(f);
+ return bp;
+}
+
+int
+Bterm(Biobuf *bp)
+{
+
+ deinstall(bp);
+ Bflush(bp);
+ if(bp->flag == Bmagic) {
+ bp->flag = 0;
+ close(bp->fid);
+ free(bp);
+ }
+ return 0;
+}
diff --git a/src/libbio/boffset.c b/src/libbio/boffset.c
new file mode 100644
index 0000000..77d8b08
--- /dev/null
+++ b/src/libbio/boffset.c
@@ -0,0 +1,50 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/boffset.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "lib9.h"
+#include <bio.h>
+
+off_t
+Boffset(Biobuf *bp)
+{
+ off_t n;
+
+ switch(bp->state) {
+ default:
+ fprint(2, "Boffset: unknown state %d\n", bp->state);
+ n = Beof;
+ break;
+
+ case Bracteof:
+ case Bractive:
+ n = bp->offset + bp->icount;
+ break;
+
+ case Bwactive:
+ n = bp->offset + (bp->bsize + bp->ocount);
+ break;
+ }
+ return n;
+}
diff --git a/src/libbio/bprint.c b/src/libbio/bprint.c
new file mode 100644
index 0000000..2e3867a
--- /dev/null
+++ b/src/libbio/bprint.c
@@ -0,0 +1,54 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bprint.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bprint(Biobuf *bp, char *fmt, ...)
+{
+ va_list ap;
+ char *ip, *ep, *out;
+ int n;
+
+ ep = (char*)bp->ebuf;
+ ip = ep + bp->ocount;
+ va_start(ap, fmt);
+ out = vseprint(ip, ep, fmt, ap);
+ va_end(ap);
+ if(out == nil || out >= ep-5) {
+ Bflush(bp);
+ ip = ep + bp->ocount;
+ va_start(ap, fmt);
+ out = vseprint(ip, ep, fmt, ap);
+ va_end(ap);
+ if(out >= ep-5)
+ return Beof;
+ }
+ n = out-ip;
+ bp->ocount += n;
+ return n;
+}
diff --git a/src/libbio/bputc.c b/src/libbio/bputc.c
new file mode 100644
index 0000000..4cdbe8f
--- /dev/null
+++ b/src/libbio/bputc.c
@@ -0,0 +1,46 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bputc.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bputc(Biobuf *bp, int c)
+{
+ int i;
+
+ for(;;) {
+ i = bp->ocount;
+ if(i) {
+ bp->ebuf[i++] = c;
+ bp->ocount = i;
+ return 0;
+ }
+ if(Bflush(bp) == Beof)
+ break;
+ }
+ return Beof;
+}
diff --git a/src/libbio/bputrune.c b/src/libbio/bputrune.c
new file mode 100644
index 0000000..9c588db
--- /dev/null
+++ b/src/libbio/bputrune.c
@@ -0,0 +1,49 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bputrune.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <utf.h>
+
+int
+Bputrune(Biobuf *bp, long c)
+{
+ Rune rune;
+ char str[4];
+ int n;
+
+ rune = c;
+ if(rune < Runeself) {
+ Bputc(bp, rune);
+ return 1;
+ }
+ n = runetochar(str, &rune);
+ if(n == 0)
+ return Bbad;
+ if(Bwrite(bp, str, n) != n)
+ return Beof;
+ return n;
+}
diff --git a/src/libbio/brdline.c b/src/libbio/brdline.c
new file mode 100644
index 0000000..a02bf10
--- /dev/null
+++ b/src/libbio/brdline.c
@@ -0,0 +1,120 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/brdline.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+void*
+Brdline(Biobuf *bp, int delim)
+{
+ char *ip, *ep;
+ int i, j;
+
+ i = -bp->icount;
+ if(i == 0) {
+ /*
+ * eof or other error
+ */
+ if(bp->state != Bractive) {
+ if(bp->state == Bracteof)
+ bp->state = Bractive;
+ bp->rdline = 0;
+ bp->gbuf = bp->ebuf;
+ return 0;
+ }
+ }
+
+ /*
+ * first try in remainder of buffer (gbuf doesn't change)
+ */
+ ip = (char*)bp->ebuf - i;
+ ep = memchr(ip, delim, i);
+ if(ep) {
+ j = (ep - ip) + 1;
+ bp->rdline = j;
+ bp->icount += j;
+ return ip;
+ }
+
+ /*
+ * copy data to beginning of buffer
+ */
+ if(i < bp->bsize)
+ memmove(bp->bbuf, ip, i);
+ bp->gbuf = bp->bbuf;
+
+ /*
+ * append to buffer looking for the delim
+ */
+ ip = (char*)bp->bbuf + i;
+ while(i < bp->bsize) {
+ j = read(bp->fid, ip, bp->bsize-i);
+ if(j <= 0) {
+ /*
+ * end of file with no delim
+ */
+ memmove(bp->ebuf-i, bp->bbuf, i);
+ bp->rdline = i;
+ bp->icount = -i;
+ bp->gbuf = bp->ebuf-i;
+ return 0;
+ }
+ bp->offset += j;
+ i += j;
+ ep = memchr(ip, delim, j);
+ if(ep) {
+ /*
+ * found in new piece
+ * copy back up and reset everything
+ */
+ ip = (char*)bp->ebuf - i;
+ if(i < bp->bsize){
+ memmove(ip, bp->bbuf, i);
+ bp->gbuf = (unsigned char*)ip;
+ }
+ j = (ep - (char*)bp->bbuf) + 1;
+ bp->rdline = j;
+ bp->icount = j - i;
+ return ip;
+ }
+ ip += j;
+ }
+
+ /*
+ * full buffer without finding
+ */
+ bp->rdline = bp->bsize;
+ bp->icount = -bp->bsize;
+ bp->gbuf = bp->bbuf;
+ return 0;
+}
+
+int
+Blinelen(Biobuf *bp)
+{
+
+ return bp->rdline;
+}
diff --git a/src/libbio/brdstr.c b/src/libbio/brdstr.c
new file mode 100644
index 0000000..0398ab0
--- /dev/null
+++ b/src/libbio/brdstr.c
@@ -0,0 +1,60 @@
+/*
+ Copyright © 2009 The Go Authors. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+char*
+Brdstr(Biobuf *bp, int delim, int nulldelim)
+{
+ char *p, *q, *nq;
+ int n, linelen;
+
+ q = nil;
+ n = 0;
+ for(;;) {
+ p = Brdline(bp, delim);
+ linelen = Blinelen(bp);
+ if(n == 0 && linelen == 0)
+ return nil;
+ nq = realloc(q, n+linelen+1);
+ if(nq == nil) {
+ free(q);
+ return nil;
+ }
+ q = nq;
+ if(p != nil) {
+ memmove(q+n, p, linelen);
+ n += linelen;
+ if(nulldelim)
+ q[n-1] = '\0';
+ break;
+ }
+ if(linelen == 0)
+ break;
+ Bread(bp, q+n, linelen);
+ n += linelen;
+ }
+ q[n] = '\0';
+ return q;
+}
diff --git a/src/libbio/bread.c b/src/libbio/bread.c
new file mode 100644
index 0000000..5cf9a05
--- /dev/null
+++ b/src/libbio/bread.c
@@ -0,0 +1,71 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bread.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+long
+Bread(Biobuf *bp, void *ap, long count)
+{
+ long c;
+ unsigned char *p;
+ int i, n, ic;
+
+ p = ap;
+ c = count;
+ ic = bp->icount;
+
+ while(c > 0) {
+ n = -ic;
+ if(n > c)
+ n = c;
+ if(n == 0) {
+ if(bp->state != Bractive)
+ break;
+ i = read(bp->fid, bp->bbuf, bp->bsize);
+ if(i <= 0) {
+ bp->state = Bracteof;
+ if(i < 0)
+ bp->state = Binactive;
+ break;
+ }
+ bp->gbuf = bp->bbuf;
+ bp->offset += i;
+ if(i < bp->bsize) {
+ memmove(bp->ebuf-i, bp->bbuf, i);
+ bp->gbuf = bp->ebuf-i;
+ }
+ ic = -i;
+ continue;
+ }
+ memmove(p, bp->ebuf+ic, n);
+ c -= n;
+ ic += n;
+ p += n;
+ }
+ bp->icount = ic;
+ return count-c;
+}
diff --git a/src/libbio/bseek.c b/src/libbio/bseek.c
new file mode 100644
index 0000000..d60aeeb
--- /dev/null
+++ b/src/libbio/bseek.c
@@ -0,0 +1,85 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bseek.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "lib9.h"
+#include <bio.h>
+
+off_t
+Bseek(Biobuf *bp, off_t offset, int base)
+{
+ vlong n, d;
+ int bufsz;
+
+ switch(bp->state) {
+ default:
+ fprint(2, "Bseek: unknown state %d\n", bp->state);
+ return Beof;
+
+ case Bracteof:
+ bp->state = Bractive;
+ bp->icount = 0;
+ bp->gbuf = bp->ebuf;
+
+ case Bractive:
+ n = offset;
+ if(base == 1) {
+ n += Boffset(bp);
+ base = 0;
+ }
+
+ /*
+ * try to seek within buffer
+ */
+ if(base == 0) {
+ d = n - Boffset(bp);
+ bufsz = bp->ebuf - bp->gbuf;
+ if(-bufsz <= d && d <= bufsz){
+ bp->icount += d;
+ if(d >= 0) {
+ if(bp->icount <= 0)
+ return n;
+ } else {
+ if(bp->ebuf - bp->gbuf >= -bp->icount)
+ return n;
+ }
+ }
+ }
+
+ /*
+ * reset the buffer
+ */
+ n = lseek(bp->fid, n, base);
+ bp->icount = 0;
+ bp->gbuf = bp->ebuf;
+ break;
+
+ case Bwactive:
+ Bflush(bp);
+ n = lseek(bp->fid, offset, base);
+ break;
+ }
+ bp->offset = n;
+ return n;
+}
diff --git a/src/libbio/bwrite.c b/src/libbio/bwrite.c
new file mode 100644
index 0000000..daed161
--- /dev/null
+++ b/src/libbio/bwrite.c
@@ -0,0 +1,64 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bwrite.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+long
+Bwrite(Biobuf *bp, void *ap, long count)
+{
+ long c;
+ unsigned char *p;
+ int i, n, oc;
+
+ p = ap;
+ c = count;
+ oc = bp->ocount;
+
+ while(c > 0) {
+ n = -oc;
+ if(n > c)
+ n = c;
+ if(n == 0) {
+ if(bp->state != Bwactive)
+ return Beof;
+ i = write(bp->fid, bp->bbuf, bp->bsize);
+ if(i != bp->bsize) {
+ bp->state = Binactive;
+ return Beof;
+ }
+ bp->offset += i;
+ oc = -bp->bsize;
+ continue;
+ }
+ memmove(bp->ebuf+oc, p, n);
+ oc += n;
+ c -= n;
+ p += n;
+ }
+ bp->ocount = oc;
+ return count-c;
+}
