Browse Source
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5281 42af7a65-404d-4744-a932-0658087f49c3sbg
patacongo
12 years ago
11 changed files with 472 additions and 9 deletions
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# |
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# For a description of the syntax of this configuration file, |
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# see misc/tools/kconfig-language.txt. |
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# |
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config EXAMPLES_WGETJSON |
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bool "wget JSON Example" |
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default n |
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depends on NETUTILS_JSON |
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---help--- |
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Enable the wget JSON example |
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if EXAMPLES_WGETJSON |
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config EXAMPLES_WGETJSON_MAXSIZE |
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int "Max. JSON Buffer Size" |
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default 10240 |
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config EXAMPLES_WGETJSON_URL |
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string "wget URL" |
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default "http://10.0.0.1/wgetjson/json_cmd.php" |
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endif |
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############################################################################
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# apps/examples/wgetjson/Makefile
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#
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# Copyright (C) 2012 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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-include $(TOPDIR)/.config |
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-include $(TOPDIR)/Make.defs |
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include $(APPDIR)/Make.defs |
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# Hello, World! Example
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ASRCS =
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CSRCS = wgetjson_main.c
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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OBJS = $(AOBJS) $(COBJS)
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ifeq ($(WINTOOL),y) |
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BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
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else |
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BIN = "$(APPDIR)/libapps$(LIBEXT)"
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endif |
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ROOTDEPPATH = --dep-path .
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# Buttons built-in application info
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APPNAME = wgetjson
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PRIORITY = SCHED_PRIORITY_DEFAULT
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STACKSIZE = 2048
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# Common build
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VPATH =
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all: .built |
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.PHONY: context clean depend distclean |
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$(AOBJS): %$(OBJEXT): %.S |
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$(call ASSEMBLE, $<, $@)
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$(COBJS): %$(OBJEXT): %.c |
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$(call COMPILE, $<, $@)
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.built: $(OBJS) |
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@( for obj in $(OBJS) ; do \
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$(call ARCHIVE, $(BIN), $${obj}); \
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done ; )
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@touch .built
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.context: |
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ifeq ($(CONFIG_NSH_BUILTIN_APPS),y) |
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$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
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@touch $@
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endif |
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context: .context |
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.depend: Makefile $(SRCS) |
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@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
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@touch $@
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depend: .depend |
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clean: |
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@rm -f *.o *~ .*.swp .built
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$(call CLEAN)
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distclean: clean |
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@rm -f Make.dep .depend
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-include Make.dep |
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<?php |
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/* |
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$json = "{\n\"name\": \"Jack (\\\"Bee\\\") Nimble\", \n\"format\": {\"type\": \"rect\", \n\"width\": 1920, \n\"height\": 1080, \n\"interlace\": false,\"frame rate\": 24\n}\n}"; |
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*/ |
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$ja["name"] = "Jack (\"Bee\") Nimble"; |
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$ja["format"]["type"] = "rect"; |
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$ja["format"]["width"] = 1920; |
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$ja["format"]["height"] = 1080; |
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$ja["format"]["interlace"] = false; |
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$ja["format"]["frame rate"] = 24; |
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echo json_encode($ja); |
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?> |
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/****************************************************************************
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* examples/wgetjson/wgetjson_main.c |
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* |
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* Copyright (C) 2012 Gregory Nutt. All rights reserved. |
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* Author: Darcy Gong |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/****************************************************************************
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#include <stdbool.h> |
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#include <stdint.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include <apps/netutils/uiplib.h> |
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#include <apps/netutils/webclient.h> |
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#include <apps/netutils/cJSON.h> |
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/****************************************************************************
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* Definitions |
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****************************************************************************/ |
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#ifndef CONFIG_EXAMPLES_WGETJSON_MAXSIZE |
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# define CONFIG_EXAMPLES_WGETJSON_MAXSIZE 1024*10 |
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#endif |
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#ifndef CONFIG_EXAMPLES_EXAMPLES_WGETJSON_URL |
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# define CONFIG_EXAMPLES_EXAMPLES_WGETJSON_URL "http://10.0.0.1/wgetjson/json_cmd.php"
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#endif |
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/****************************************************************************
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* Private Types |
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****************************************************************************/ |
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/****************************************************************************
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* Private Function Prototypes |
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****************************************************************************/ |
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/****************************************************************************
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* Private Data |
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****************************************************************************/ |
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static char *g_json_buff = NULL; |
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static int g_json_bufflen = 0; |
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static bool g_has_json = false; |
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/****************************************************************************
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* Private Functions |
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****************************************************************************/ |
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/****************************************************************************
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* Name: wgetjson_callback |
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****************************************************************************/ |
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static void wgetjson_callback(FAR char **buffer, int offset, int datend, |
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FAR int *buflen, FAR void *arg) |
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{ |
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int len = datend - offset,org=len; |
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if (len <= 0) |
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{ |
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return; |
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} |
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if (!g_json_buff) |
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{ |
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g_json_buff = malloc(len + 1); |
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memcpy(g_json_buff, &((*buffer)[offset]), len); |
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g_json_buff[len] = 0; |
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g_json_bufflen = len; |
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} |
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else |
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{ |
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if (g_json_bufflen >= CONFIG_EXAMPLES_WGETJSON_MAXSIZE) |
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{ |
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g_json_bufflen += org; |
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return; |
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} |
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if (g_json_bufflen+len > CONFIG_EXAMPLES_WGETJSON_MAXSIZE) |
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{ |
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len = CONFIG_EXAMPLES_WGETJSON_MAXSIZE - g_json_bufflen; |
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} |
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g_json_buff = realloc(g_json_buff, g_json_bufflen + len + 1); |
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memcpy(&g_json_buff[g_json_bufflen-1], &((*buffer)[offset]), len); |
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g_json_buff[g_json_bufflen + len] = 0; |
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g_json_bufflen += org; |
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} |
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} |
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/****************************************************************************
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* Name: wgetjson_json_release |
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****************************************************************************/ |
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static void wgetjson_json_release(void) |
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{ |
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if (g_json_buff) |
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{ |
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free(g_json_buff); |
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g_json_buff = NULL; |
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} |
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g_json_bufflen = 0; |
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} |
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/****************************************************************************
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* Name: wgetjson_doit |
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****************************************************************************/ |
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#if 0 /* Not used */
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static void wgetjson_doit(char *text) |
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{ |
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char *out; |
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cJSON *json; |
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json = cJSON_Parse(text); |
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if (!json) |
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{ |
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printf("Error before: [%s]\n",cJSON_GetErrorPtr()); |
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} |
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else |
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{ |
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out = cJSON_Print(json); |
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cJSON_Delete(json); |
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printf("%s\n", out); |
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free(out); |
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} |
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} |
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#endif |
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/****************************************************************************
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* Name: wgetjson_json_item_callback |
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****************************************************************************/ |
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static int wgetjson_json_item_callback(const char *name,int type,cJSON *item) |
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{ |
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if (strlen(name) > 8 && !memcmp(name, "/(null)", 7)) |
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{ |
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name += 8; |
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g_has_json = true; |
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} |
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if (!strcmp(name, "name")) |
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{ |
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printf("name:\t\t\t%s \n", item->valuestring); |
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// todo something....
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} |
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else if (strcmp(name, "format/type")==0) |
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{ |
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printf("format/type:\t\t%s \n", item->valuestring); |
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// todo something....
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} |
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else if (!strcmp(name, "format/width")) |
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{ |
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printf("format/width:\t\t%d \n", item->valueint); |
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// todo something....
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} |
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else if (!strcmp(name, "format/height")) |
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{ |
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printf("format/height:\t\t%d \n", item->valueint); |
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// todo something....
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} |
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else if (!strcmp(name, "format/interlace")) |
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{ |
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printf("format/interlace:\t%s \n", (item->valueint) ? "true" : "false"); |
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// todo something....
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} |
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else if (!strcmp(name, "format/frame rate")) |
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{ |
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printf("format/frame rate:\t%d \n", item->valueint); |
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// todo something....
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} |
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return 1; |
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} |
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/****************************************************************************
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* Name: wgetjson_json_item_scan |
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****************************************************************************/ |
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static void wgetjson_json_item_scan(cJSON *item, const char *prefix) |
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{ |
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char *newprefix; |
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int dorecurse; |
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while (item) |
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{ |
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newprefix = malloc(strlen(prefix) + strlen(item->string) + 2); |
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sprintf(newprefix, "%s/%s", prefix, item->string); |
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dorecurse = wgetjson_json_item_callback(newprefix, item->type, item); |
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if (item->child && dorecurse) |
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{ |
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wgetjson_json_item_scan(item->child, newprefix); |
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} |
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item = item->next; |
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free(newprefix); |
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} |
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} |
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/****************************************************************************
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* Name: wgetjson_json_parse |
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****************************************************************************/ |
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static int wgetjson_json_parse(char *text) |
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{ |
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cJSON *json; |
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char *path = ""; |
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json=cJSON_Parse(text); |
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if (!json) |
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{ |
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printf("Error before: [%s]\n", cJSON_GetErrorPtr()); |
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return ERROR; |
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} |
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else |
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{ |
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wgetjson_json_item_scan(json, path); |
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cJSON_Delete(json); |
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return OK; |
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} |
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} |
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/****************************************************************************
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* Public Functions |
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****************************************************************************/ |
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/****************************************************************************
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* Name: wgetjson_main |
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****************************************************************************/ |
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int wgetjson_main(int argc, char *argv[]) |
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{ |
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char *buffer = NULL; |
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char *url = CONFIG_EXAMPLES_EXAMPLES_WGETJSON_URL; |
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int ret; |
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buffer = malloc(512); |
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wgetjson_json_release(); |
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printf("URL: %s\n", url); |
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ret = wget(url, buffer, 512, wgetjson_callback, NULL); |
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if (ret < 0) |
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{ |
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printf("get json size: %d\n",g_json_bufflen); |
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} |
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else |
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{ |
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g_has_json = false; |
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if (wgetjson_json_parse(g_json_buff) == OK && g_has_json) |
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{ |
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printf("Parse OK\n"); |
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} |
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else |
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{ |
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printf("Parse error\n"); |
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} |
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g_has_json = false; |
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} |
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wgetjson_json_release(); |
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free(buffer); |
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return 0; |
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} |
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