Unicode support for strings

Add suport for using unicode strings in .scad files. Support iterating
across them/accessing them via [] and searching.
--------
Add GLIB (to build for test and normal build -- both with installed and
built locally development files).
Add support for unicode chars to length and search builtin functions and
[] for strings.
Added unicode testing functions.
Ad GLIB to library info page.

1 files changed, 38 insertions, 0 deletions

diff --git a/glib-2.0.pri b/glib-2.0.pri
new file mode 100644
index 0000000..0fbc4e2
--- /dev/null
+++ b/glib-2.0.pri
@@ -0,0 +1,38 @@
+# Detect glib-2.0, then use this priority list to determine
+# which library to use:
+#
+# Priority
+# 1. GLIB2_INCLUDEPATH / GLIB2_LIBPATH (qmake parameter, not checked it given on commandline)
+# 2. OPENSCAD_LIBRARIES (environment variable)
+# 3. system's standard include paths from pkg-config
+
+glib-2.0 {
+
+# read environment variables
+OPENSCAD_LIBRARIES_DIR = $$(OPENSCAD_LIBRARIES)
+GLIB2_DIR = $$(GLIB2DIR)
+
+!isEmpty(OPENSCAD_LIBRARIES_DIR) {
+  isEmpty(GLIB2_INCLUDEPATH) {
+    GLIB2_INCLUDEPATH_1 = $$OPENSCAD_LIBRARIES_DIR/include/glib-2.0
+    GLIB2_INCLUDEPATH_2 = $$OPENSCAD_LIBRARIES_DIR/lib/glib-2.0/include
+    GLIB2_LIBPATH = $$OPENSCAD_LIBRARIES_DIR/lib
+  }
+}
+
+isEmpty(GLIB2_INCLUDEPATH) {
+  GLIB2_CFLAGS = $$system("pkg-config --cflags glib-2.0")
+} else {
+  GLIB2_CFLAGS = -I$$GLIB2_INCLUDEPATH_1
+  GLIB2_CFLAGS += -I$$GLIB2_INCLUDEPATH_2
+}
+
+isEmpty(GLIB2_LIBPATH) {
+  GLIB2_LIBS = $$system("pkg-config --libs glib-2.0")
+} else {
+  GLIB2_LIBS = -L$$GLIB2_LIBPATH -lglib-2.0
+}
+
+QMAKE_CXXFLAGS += $$GLIB2_CFLAGS
+LIBS += $$GLIB2_LIBS
+}