BastliPOSPrinter

commit 73cbfb261d91a13e2b8ce6bbed51146f86d73f3a
Author: Dominik Schmidt <doeme@bastli.ethz.ch>
Date:   Mon,  3 Sep 2018 16:59:26 +0200

Initial commit

Diffstat:
daemon.sh
 | 
6
++++++
pipeline.sh
 | 
7
+++++++
pipeline/GROFF_to_printable
 | 
3
+++
pipeline/JSON_to_GROFF.d
 | 
61
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
pipeline/print
 | 
3
+++
template.roff
 | 
61
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

6 files changed, 141 insertions(+), 0 deletions(-)
diff --git a/daemon.sh b/daemon.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+USERNAME="${1}"
+PASSWORD="${2}"
+
+./amqp-consume --server=backdoor.bastli.ch "--username=${USERNAME}" "--password=${PASSWORD}" --vhost="/" -q print_queue ./pipeline.sh
diff --git a/pipeline.sh b/pipeline.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+
+cd pipeline
+
+./JSON_to_GROFF ../template.roff \
+| ./GROFF_to_printable \
+| ./print
diff --git a/pipeline/GROFF_to_printable b/pipeline/GROFF_to_printable
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+groff -k -Tutf8 -t
diff --git a/pipeline/JSON_to_GROFF.d b/pipeline/JSON_to_GROFF.d
@@ -0,0 +1,61 @@
+import std.stdio;
+import std.json;
+import std.array;
+import std.algorithm;
+import std.regex;
+import std.format;
+import std.conv;
+import std.range;
+import std.datetime : Clock;
+
+void main(string[] argv){
+	auto str=stdin.byChunk(4096).map!(a=>cast(char[])a).joiner();
+	auto j=parseJSON(str);
+	
+	string positions(){
+		Appender!string app;
+		app~=".na\n";
+		app~=".TS\n";
+		"llxri\n".repeat(j["articles"].array.length).copy(app);
+		app~="===\n";
+		app~="lbr\n";
+		app~=".\n";
+		double total=0;
+		foreach(ulong ix,art; j["articles"]){
+			double price=art["price"].str.to!double;
+			string name=art["name"].str;
+			ulong amount=art["amount"].integer;
+			app.formattedWrite!"%d\tT{\n%s\nT}\t%.2f\n"(amount,name,price);
+			total+=price * amount;
+		}
+		app~="\n";
+		app.formattedWrite("\tTOTAL\t%.2f\n", total);
+		app~=".TE\n";
+		app~=".al\n";
+		return app.data;
+	}
+	string delegate()[string] tbl=[
+		"sale_id": (){return j["sale_id"].integer.to!string;},
+		"positions": &positions,
+		"today": (){return Clock.currTime.toISOExtString();},
+	];
+	auto lookup(Captures!(char[]) cap){
+		auto b=cap[1];
+		auto fct=b in tbl;
+		if(!fct){
+			return "{{"~b~"}}";
+		}
+		else{
+			return cast(const(char)[])(*fct)();
+		}
+	}
+	File tmplate=File(argv[1], "r");
+	scope(exit)tmplate.close();
+	auto reg=ctRegex!("\\{\\{([^}]+)\\}\\}");
+	auto sink=stdout.lockingTextWriter;
+	
+	foreach(line; tmplate.byLine(KeepTerminator.yes)){
+		replaceAllInto!(lookup)(sink, line, reg);
+	}
+	
+}
diff --git a/pipeline/print b/pipeline/print
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+cat
diff --git a/template.roff b/template.roff
@@ -0,0 +1,61 @@
+.ll 7.9c-0.4c
+.po 0.2c
+\" Inifinte Page definitions
+.  de1 ne
+.    ie \\n[.$] \
+.      nr an-ne (v;\\$*)
+.    el \
+.      nr an-ne 1v
+.    if (\\n[an-ne] >= \\n[.t]) \
+.      pl +(\\n[an-ne]u - \\n[.t]u + 1v)
+.  .
+.
+.  rn bp an-bp
+.  de1 bp
+.    br
+.    pl \\n[nl]u
+.    an-bp \\$*
+.  .
+.de1 an-end
+.  nr % 1
+.  fl
+.  pl \\n[nl]u
+..
+.em an-end
+\" Done with infinipage
+.
+.ft CR
+.br
+    ____
+.br
+   / __ )
+.br
+  / __  |
+.br
+ / /_/ /
+.br
+/_____/
+.br
+
+RECEIPT
+
+{{positions}}
+
+AMIV an der ETH
+.br
+BASTLI
+.br
+CAB E38
+.br
+Universitätsstrasse 6
+.br
+8004 Zürich
+.br
+044 632 49 41
+.br
+Sales ID: {{sale_id}}
+.br
+{{today}}
+.br
+.pl 0c
+\n[.p]