From 6fddb0f2c9f60714089389350e001f6f765d2405 Mon Sep 17 00:00:00 2001
From: Joe Crayne <joe@jerkface.net>
Date: Tue, 11 Jun 2019 00:22:09 -0400
Subject: Script to extract test data from OBJ spec.

---
 doc/OBJ.spec              | 100 +++++++++++++++++++++++-----------------------
 test-data/extract-data.sh |  10 +++++
 2 files changed, 60 insertions(+), 50 deletions(-)
 create mode 100755 test-data/extract-data.sh

diff --git a/doc/OBJ.spec b/doc/OBJ.spec
index 09b6e72..13f49a5 100644
--- a/doc/OBJ.spec
+++ b/doc/OBJ.spec
@@ -915,41 +915,41 @@ This is a cube with negative vertex reference numbers. Each element
 references the vertices stored immediately above it in the file. Note
 that vertices are not shared.
 
-v 0.000000 2.000000 2.000000
-v 0.000000 0.000000 2.000000
-v 2.000000 0.000000 2.000000
-v 2.000000 2.000000 2.000000
-f -4 -3 -2 -1
-
-v 2.000000 2.000000 0.000000
-v 2.000000 0.000000 0.000000
-v 0.000000 0.000000 0.000000
-v 0.000000 2.000000 0.000000
-f -4 -3 -2 -1
-
-v 2.000000 2.000000 2.000000
-v 2.000000 0.000000 2.000000
-v 2.000000 0.000000 0.000000
-v 2.000000 2.000000 0.000000
-f -4 -3 -2 -1
-
-v 0.000000 2.000000 0.000000
-v 0.000000 2.000000 2.000000
-v 2.000000 2.000000 2.000000
-v 2.000000 2.000000 0.000000
-f -4 -3 -2 -1
-
-v 0.000000 2.000000 0.000000
-v 0.000000 0.000000 0.000000
-v 0.000000 0.000000 2.000000
-v 0.000000 2.000000 2.000000
-f -4 -3 -2 -1
-
-v 0.000000 0.000000 2.000000
-v 0.000000 0.000000 0.000000
-v 2.000000 0.000000 0.000000
-v 2.000000 0.000000 2.000000
-f -4 -3 -2 -1
+    v 0.000000 2.000000 2.000000
+    v 0.000000 0.000000 2.000000
+    v 2.000000 0.000000 2.000000
+    v 2.000000 2.000000 2.000000
+    f -4 -3 -2 -1
+
+    v 2.000000 2.000000 0.000000
+    v 2.000000 0.000000 0.000000
+    v 0.000000 0.000000 0.000000
+    v 0.000000 2.000000 0.000000
+    f -4 -3 -2 -1
+
+    v 2.000000 2.000000 2.000000
+    v 2.000000 0.000000 2.000000
+    v 2.000000 0.000000 0.000000
+    v 2.000000 2.000000 0.000000
+    f -4 -3 -2 -1
+
+    v 0.000000 2.000000 0.000000
+    v 0.000000 2.000000 2.000000
+    v 2.000000 2.000000 2.000000
+    v 2.000000 2.000000 0.000000
+    f -4 -3 -2 -1
+
+    v 0.000000 2.000000 0.000000
+    v 0.000000 0.000000 0.000000
+    v 0.000000 0.000000 2.000000
+    v 0.000000 2.000000 2.000000
+    f -4 -3 -2 -1
+
+    v 0.000000 0.000000 2.000000
+    v 0.000000 0.000000 0.000000
+    v 2.000000 0.000000 0.000000
+    v 2.000000 0.000000 2.000000
+    f -4 -3 -2 -1
 
 
 
@@ -2358,21 +2358,21 @@ references itself as the trace object.
 This example describes a 2 x 2 square. It is mapped with a 1 x 1 square
 texture. The texture is stretched to fit the square exactly.
 
-mtllib master.mtl
-
-v 0.000000 2.000000 0.000000
-v 0.000000 0.000000 0.000000
-v 2.000000 0.000000 0.000000
-v 2.000000 2.000000 0.000000
-vt 0.000000 1.000000 0.000000
-vt 0.000000 0.000000 0.000000
-vt 1.000000 0.000000 0.000000
-vt 1.000000 1.000000 0.000000
-# 4 vertices
-
-usemtl wood
-f 1/1 2/2 3/3 4/4
-# 1 element
+    mtllib master.mtl
+
+    v 0.000000 2.000000 0.000000
+    v 0.000000 0.000000 0.000000
+    v 2.000000 0.000000 0.000000
+    v 2.000000 2.000000 0.000000
+    vt 0.000000 1.000000 0.000000
+    vt 0.000000 0.000000 0.000000
+    vt 1.000000 0.000000 0.000000
+    vt 1.000000 1.000000 0.000000
+    # 4 vertices
+
+    usemtl wood
+    f 1/1 2/2 3/3 4/4
+    # 1 element
 
 5.      Approximation technique for a surface
 
diff --git a/test-data/extract-data.sh b/test-data/extract-data.sh
new file mode 100755
index 0000000..a0e5af8
--- /dev/null
+++ b/test-data/extract-data.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# This script extracts examples from OBJ.spec for testing purposes.
+
+IFS='' read -r -d '' prog <<'EOF'
+BEGINFILE { g=0; }
+          /^    (v[tnp]? [^is]|#|mtllib\b|g\b)/ {if(!inside){ g++; inside=1; }}
+	  /^[^ ]/{inside=0;}                    { if(inside) {print $0 > sprintf("%02d",g) ".obj"}}
+EOF
+awk "$prog" ../doc/OBJ.spec
-- 
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