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read edges from stdin instead of argv

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josch 2013-04-11 10:15:01 +02:00
parent 05d80f20f8
commit a03020515f
2 changed files with 23 additions and 16 deletions
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24
README.md
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@ -16,7 +16,7 @@ Usage
-----
make
./circuits_hawick 4 0,1 0,2 1,0 1,3 2,0 3,0 3,1 3,2
echo "0 1\n0 2\n1 0\n1 3\n2 0\n3 0\n3 1\n3 2" | ./circuits_hawick 4
First argument is the number of vertices. Subsequent arguments are ordered
pairs of comma separated vertices that make up the directed edges of the
@ -29,10 +29,11 @@ For simplicity, there is no DOT file parser included but the following allows
to create a suitable argument string for simple DOT graphs.
Given a DOT file of a simple (no labels, colors, styles, only pairs of
vertices...) directed graph, the following line produces commandline
arguments in the above format for that graph.
vertices...) directed graph, the following lines generate the number of
vertices as well as the edge list expected on standard input.
echo `sed -n -e '/^\s*[0-9]\+;$/p' graph.dot | wc -l` `sed -n -e 's/^\s*\([0-9]\) -> \([0-9]\);$/\1,\2/p' graph.dot`
sed -n -e '/^\s*[0-9]\+;$/p' graph.dot | wc -l
sed -n -e 's/^\s*\([0-9]\) -> \([0-9]\);$/\1 \2/p' graph.dot
The above line works on DOT files like the following:
@ -47,9 +48,14 @@ The above line works on DOT files like the following:
2 -> 1;
}
It would produce the following output:
They would produce the following output:
3 0,1 0,2 1,0 2,0 2,1
3
0 1
0 2
1 0
2 0
2 1
Reproducing the example from the paper
--------------------------------------
@ -76,6 +82,6 @@ the presence of a multiple-arc connecting nodes 12 and 1.
The input graph, which is shown in figure 9, can be given as an input to the
program using above format as follows:
./circuits_hawick 16 0,2 0,10 0,14 1,5 1,8 2,7 2,9 3,3 3,4 3,6 4,5 4,13 \
4,15 6,13 8,0 8,4 8,8 9,9 10,7 10,11 11,6 12,1 12,1 12,2 12,10 12,12 \
12,14 13,3 13,12 13,15 14,11 15,0
echo "0 2\n0 10\n0 14\n1 5\n1 8\n2 7\n2 9\n3 3\n3 4\n3 6\n4 5\n4 13\n\
4 15\n6 13\n8 0\n8 4\n8 8\n9 9\n10 7\n10 11\n11 6\n12 1\n12 1\n12 2\n12 10\n12 12\n\
12 14\n13 3\n13 12\n13 15\n14 11\n15 0" | ./circuits_hawick 16

15
circuits_hawick.d
View file

@ -200,8 +200,9 @@ void setupGlobals(string[] args) { // presupposes nVertices is set up
blocked[i] = false;
}
for (int i = 2; i < args.length; i++) {
string[] vertices = std.array.split(args[i], ",");
char[] buf;
while (stdin.readln(buf)) {
string[] vertices = std.array.split(std.conv.to!string(buf), " ");
int v1 = std.conv.parse!int(vertices[0]);
int v2 = std.conv.parse!int(vertices[1]);
addToList(Ak[v1], v2);
@ -225,13 +226,13 @@ void setupGlobals(string[] args) { // presupposes nVertices is set up
* to replicate the result from figure 10 in the paper, run the program as
* follows:
*
* ./circuits_hawick 16 0,2 0,10 0,14 1,5 1,8 2,7 2,9 3,3 3,4 3,6 4,5 4,13 \
* 4,15 6,13 8,0 8,4 8,8 9,9 10,7 10,11 11,6 12,1 12,1 12,2 12,10 12,12 \
* 12,14 13,3 13,12 13,15 14,11 15,0
* echo "0 2\n0 10\n0 14\n1 5\n1 8\n2 7\n2 9\n3 3\n3 4\n3 6\n4 5\n4 13\n\
* 4 15\n6 13\n8 0\n8 4\n8 8\n9 9\n10 7\n10 11\n11 6\n12 1\n12 1\n12 2\n12 10\n12 12\n\
* 12 14\n13 3\n13 12\n13 15\n14 11\n15 0" | ./circuits_hawick 16
*/
int main(string[] args) {
if (args.length < 3) {
std.stdio.writefln("usage: %s num_vertices [v1,v2...]", args[0]);
if (args.length != 2) {
std.stdio.writefln("usage: echo \"v1 v2\nv1 v3\n...\" | %s num_vertices", args[0]);
return 1;
}
setupGlobals(args);