Support locales which use comma decimal separators

Some locales (cs_CZ, de_DE,..) use a comma as their decimal separator.
This causes CJSON to generate incorrect JSON (Eg, [10,1]), and fail when
parsing some valid JSON (Eg, [10,"test"]).

Added USE_POSIX_LOCALE #define which harnesses the thread-safe
POSIX.1-2008 locale support (newlocale(), uselocale(), freelocale())
to temporarily use the POSIX locale during JSON conversion.

Some older POSIX operating systems with xlocale.h (MacOSX) are also
supported.

1 files changed, 7 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index d34ff6d..5731440 100644
--- a/Makefile
+++ b/Makefile
@@ -15,13 +15,17 @@ LDFLAGS +=         -shared
 LUA_INCLUDE_DIR ?= $(PREFIX)/include
 LUA_LIB_DIR ?=     $(PREFIX)/lib/lua/$(LUA_VERSION)
 
-# Some versions of Solaris are missing isinf(). Add -DMISSING_ISINF to
-# CFLAGS to work around this bug.
-
 #CFLAGS ?=          -g -Wall -pedantic -fno-inline
 CFLAGS ?=          -g -O3 -Wall -pedantic
 override CFLAGS += -fpic -I$(LUA_INCLUDE_DIR) -DVERSION=\"$(CJSON_VERSION)\"
 
+## Conditional work arounds
+# Handle Solaris platforms that are missing isinf().
+#override CFLAGS +=  -DMISSING_ISINF
+# Handle locales that use comma as a decimal separator on locale aware
+# platforms. Requires POSIX-1.2008 support.
+override CFLAGS +=  -DUSE_POSIX_LOCALE
+
 INSTALL ?= install
 
 .PHONY: all clean install package