it9p: parse lines in rdwr command - plan9port - [fork] Plan 9 from user space	Err	mx1.adamsgaard.dk	70
hgit clone git://src.adamsgaard.dk/plan9port	URL:git://src.adamsgaard.dk/plan9port	mx1.adamsgaard.dk	70
1Log	/src/plan9port/log.gph	mx1.adamsgaard.dk	70
1Files	/src/plan9port/files.gph	mx1.adamsgaard.dk	70
1Refs	/src/plan9port/refs.gph	mx1.adamsgaard.dk	70
1README	/src/plan9port/file/README.md.gph	mx1.adamsgaard.dk	70
1LICENSE	/src/plan9port/file/LICENSE.gph	mx1.adamsgaard.dk	70
i---	Err	mx1.adamsgaard.dk	70
1commit a72478870ae66b7ac1e73b1d22b578cd31852f33	/src/plan9port/commit/a72478870ae66b7ac1e73b1d22b578cd31852f33.gph	mx1.adamsgaard.dk	70
1parent 36cd4c58c1346375b98f517fb8568be5bb47618d	/src/plan9port/commit/36cd4c58c1346375b98f517fb8568be5bb47618d.gph	mx1.adamsgaard.dk	70
hAuthor: David Arroyo <david@aqwari.net>	URL:mailto:david@aqwari.net	mx1.adamsgaard.dk	70
iDate:   Sun, 31 Jan 2021 00:51:32 -0500	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
i9p: parse lines in rdwr command	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iUse bio(3) to read at most one line of input per iteration, even	Err	mx1.adamsgaard.dk	70
iif there is more than one line available in the input buffer. This	Err	mx1.adamsgaard.dk	70
imakes it easier to interact with line-oriented ctl files like that of	Err	mx1.adamsgaard.dk	70
ifactotum(4) from shell scripts, without the need to control when	Err	mx1.adamsgaard.dk	70
iand how much data is flushed to a pipe.	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
iDiffstat:	Err	mx1.adamsgaard.dk	70
i  M src/cmd/9p.c                        |      14 +++++++++-----	Err	mx1.adamsgaard.dk	70
i	Err	mx1.adamsgaard.dk	70
i1 file changed, 9 insertions(+), 5 deletions(-)	Err	mx1.adamsgaard.dk	70
i---	Err	mx1.adamsgaard.dk	70
1diff --git a/src/cmd/9p.c b/src/cmd/9p.c	/src/plan9port/file/src/cmd/9p.c.gph	mx1.adamsgaard.dk	70
it@@ -302,8 +302,10 @@ void	Err	mx1.adamsgaard.dk	70
i xrdwr(int argc, char **argv)	Err	mx1.adamsgaard.dk	70
i {	Err	mx1.adamsgaard.dk	70
i         char buf[4096];	Err	mx1.adamsgaard.dk	70
i+        char *p;	Err	mx1.adamsgaard.dk	70
i         int n;	Err	mx1.adamsgaard.dk	70
i         CFid *fid;	Err	mx1.adamsgaard.dk	70
i+        Biobuf *b;	Err	mx1.adamsgaard.dk	70
i 	Err	mx1.adamsgaard.dk	70
i         ARGBEGIN{	Err	mx1.adamsgaard.dk	70
i         default:	Err	mx1.adamsgaard.dk	70
it@@ -313,6 +315,8 @@ xrdwr(int argc, char **argv)	Err	mx1.adamsgaard.dk	70
i         if(argc != 1)	Err	mx1.adamsgaard.dk	70
i                 usage();	Err	mx1.adamsgaard.dk	70
i 	Err	mx1.adamsgaard.dk	70
i+        if((b = Bfdopen(0, OREAD)) == nil)	Err	mx1.adamsgaard.dk	70
i+                sysfatal("out of memory");	Err	mx1.adamsgaard.dk	70
i         fid = xopen(argv[0], ORDWR);	Err	mx1.adamsgaard.dk	70
i         for(;;){	Err	mx1.adamsgaard.dk	70
i                 fsseek(fid, 0, 0);	Err	mx1.adamsgaard.dk	70
it@@ -322,15 +326,15 @@ xrdwr(int argc, char **argv)	Err	mx1.adamsgaard.dk	70
i                         if(write(1, buf, n) < 0 || write(1, "\n", 1) < 0)	Err	mx1.adamsgaard.dk	70
i                                 sysfatal("write error: %r");	Err	mx1.adamsgaard.dk	70
i                 }	Err	mx1.adamsgaard.dk	70
i-                n = read(0, buf, sizeof buf);	Err	mx1.adamsgaard.dk	70
i-                if(n <= 0)	Err	mx1.adamsgaard.dk	70
i+                if((p = Brdstr(b, '\n', 1)) == nil)	Err	mx1.adamsgaard.dk	70
i                         break;	Err	mx1.adamsgaard.dk	70
i-                if(buf[n-1] == '\n')	Err	mx1.adamsgaard.dk	70
i-                        n--;	Err	mx1.adamsgaard.dk	70
i-                if(fswrite(fid, buf, n) != n)	Err	mx1.adamsgaard.dk	70
i+                n = strlen(p);	Err	mx1.adamsgaard.dk	70
i+                if(fswrite(fid, p, n) != n)	Err	mx1.adamsgaard.dk	70
i                         fprint(2, "write: %r\n");	Err	mx1.adamsgaard.dk	70
i+                free(p);	Err	mx1.adamsgaard.dk	70
i         }	Err	mx1.adamsgaard.dk	70
i         fsclose(fid);	Err	mx1.adamsgaard.dk	70
i+        Bterm(b);	Err	mx1.adamsgaard.dk	70
i         threadexitsall(0);	Err	mx1.adamsgaard.dk	70
i }	Err	mx1.adamsgaard.dk	70
i 	Err	mx1.adamsgaard.dk	70
.