# HG changeset patch
# User Mychaela Falconia <falcon@freecalypso.org>
# Date 1500270691 0
# Node ID 713749548df6811fd66671a031415fa8213865cb
# Parent  0937d34fb3ba82bbd7f75e7bb1ef78fc6e8e9acc
fc-rfcal-tri900 script and fc-rfcal-tee helper implemented

diff -r 0937d34fb3ba -r 713749548df6 .hgignore
--- a/.hgignore	Mon Jul 17 01:38:00 2017 +0000
+++ b/.hgignore	Mon Jul 17 05:51:31 2017 +0000
@@ -12,6 +12,8 @@
 ^cmu200/fc-cmu200d$
 ^cmu200/fc-serscpi$
 
+^scripts/fc-rfcal-tee$
+
 ^tsid-test/fc-tsid-shell$
 
 ^vcxo-manual/fc-vcxo-linear$
diff -r 0937d34fb3ba -r 713749548df6 scripts/Makefile
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/Makefile	Mon Jul 17 05:51:31 2017 +0000
@@ -0,0 +1,17 @@
+CC=	gcc
+CFLAGS=	-O2
+PROGS=	fc-rfcal-tee
+SCRIPTS=fc-rfcal-tri900
+INSTBIN=/opt/freecalypso/bin
+
+all:	${PROGS}
+
+fc-rfcal-tee:	fc-rfcal-tee.c
+	${CC} ${CFLAGS} -o $@ $@.c
+
+install:
+	mkdir -p ${INSTBIN}
+	install -c ${PROGS} ${SCRIPTS} ${INSTBIN}
+
+clean:
+	rm -f *.o *.out *errs ${PROGS}
diff -r 0937d34fb3ba -r 713749548df6 scripts/fc-rfcal-tee.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/fc-rfcal-tee.c	Mon Jul 17 05:51:31 2017 +0000
@@ -0,0 +1,86 @@
+/*
+ * This C program is a workaround for a stupidity in Bourne shell.
+ * I would like to have a shell script like the following:
+ *
+ * set -e
+ * fc-rfcal-vcxo | tee vcxo
+ * fc-rfcal-rxband 900 | tee rx-900
+ * fc-rfcal-rxband 1800 | tee rx-1800
+ * ...
+ *
+ * and if one of the fc-rfcal-* steps encounters an error and returns
+ * a non-zero exit code, I want the script to stop right there, hence
+ * the set -e at the beginning.  Sounds like a very simple and reasonable
+ * desire, doesn't it?  But oh noes - because I am piping the output
+ * through tee in order to save it in log files, the process return
+ * codes from fc-rfcal-* get *ignored* by the shell (the always successful
+ * exit code from tee is all that counts), and it will keep executing
+ * the following lines without stopping.
+ *
+ * This C program is like tee, but with invokation of the "main" command
+ * whose output is to be saved built in.  The process forks, the "main"
+ * command is executed in the child, the parent performs the tee function,
+ * and when the child terminates, the parent propagates its exit code.
+ */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+char shell_pathname[] = "/bin/sh";
+int log_fd;
+
+tee_process(pipe_fd)
+{
+	char buf[1024];
+	int cc;
+
+	while ((cc = read(pipe_fd, buf, sizeof buf)) > 0) {
+		write(1, buf, cc);
+		if (log_fd > 2)
+			write(log_fd, buf, cc);
+	}
+}
+
+main(argc, argv)
+	char **argv;
+{
+	int p[2];
+	pid_t child, waitres;
+	int status;
+
+	if (argc != 3) {
+		fprintf(stderr, "usage: %s command logfile\n", argv[0]);
+		exit(1);
+	}
+	if (pipe(p) < 0) {
+		perror("pipe");
+		exit(1);
+	}
+	child = fork();
+	if (child < 0) {
+		perror("fork");
+		exit(1);
+	}
+	if (!child) {
+		dup2(p[1], 1);
+		close(p[0]);
+		close(p[1]);
+		execl(shell_pathname, "sh", "-c", argv[1], 0);
+		perror(shell_pathname);
+		exit(1);
+	}
+	close(p[1]);
+	log_fd = open(argv[2], O_WRONLY|O_CREAT|O_TRUNC, 0666);
+	if (log_fd < 0)
+		perror(argv[2]);
+	tee_process(p[0]);
+	waitres = waitpid(child, &status, 0);
+	if (waitres == child && WIFEXITED(status))
+		exit(WEXITSTATUS(status));
+	else
+		exit(1);
+}
diff -r 0937d34fb3ba -r 713749548df6 scripts/fc-rfcal-tri900
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/fc-rfcal-tri900	Mon Jul 17 05:51:31 2017 +0000
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+case $# in
+	1)
+		;;
+	2)
+		if [ ! -d "$2" ]
+		then
+			echo "error: specified report dir $2 is bad" 1>&2
+			exit 1
+		fi
+		;;
+	*)
+		echo "usage: $0 txlevels-profile [report-dir]" 1>&2
+		exit 1
+		;;
+esac
+
+profile_dir=/opt/freecalypso/rfcal/txlevels
+
+if [ ! -f "$profile_dir/$1-900" ]
+then
+	echo "error: $profile_dir/$1-900 profile missing" 1>&2
+	exit 1
+fi
+
+if [ ! -f "$profile_dir/$1-1800" ]
+then
+	echo "error: $profile_dir/$1-1800 profile missing" 1>&2
+	exit 1
+fi
+
+if [ ! -f "$profile_dir/$1-1900" ]
+then
+	echo "error: $profile_dir/$1-1900 profile missing" 1>&2
+	exit 1
+fi
+
+report_dir="$2"
+
+run_cmd() {
+	if [ -n "$report_dir" ]
+	then
+		fc-rfcal-tee "$1" "$report_dir/$2"
+	else
+		eval "$1"
+	fi
+	rc=$?
+	if [ $rc != 0 ]
+	then
+		echo "error: $1 returned $rc" 1>&2
+		exit $rc
+	fi
+}
+
+run_cmd fc-rfcal-vcxo vcxo
+run_cmd "fc-rfcal-rxband 900" rx-900
+run_cmd "fc-rfcal-rxband 1800" rx-1800
+run_cmd "fc-rfcal-rxband 1900" rx-1900
+run_cmd "fc-rfcal-txband 900 $1" tx-900
+run_cmd "fc-rfcal-txband 1800 $1" tx-1800
+run_cmd "fc-rfcal-txband 1900 $1" tx-1900