jsmn输出
对应c程序：
#include
#include
#include
#include "jsmn.h"
#define my_printf(format, ...) printf(format, ##__VA_ARGS__)
//#define my_printf(format, ...)
typedef unsigned char uint8_t;
typedef unsigned short int uint16_t;
const char * get_jsmn_token_type(const jsmntype_t type)
{
switch (type) {
case JSMN_UNDEFINED: return "JSMN_UNDEFINED";
case JSMN_OBJECT: return "JSMN_OBJECT";
case JSMN_ARRAY: return "JSMN_ARRAY";
case JSMN_STRING: return "JSMN_STRING";
case JSMN_PRIMITIVE: return "JSMN_PRIMITIVE";
default: return "Unknown"; // 处理未知类型
}
}
static int jsoneq(const char *json, jsmntok_t *tok, const char *s)
{
if (tok->start >= tok->end)
{
return -1;
}
if ( tok->type == JSMN_STRING && (int)strlen(s) == tok->end - tok->start &&
strncmp(json + tok->start, s, tok->end - tok->start) == 0
)
{
return 0;
}
return -1;
}
int main(int argc, char *argv[])
{
const char *json = "{\"1\":\"11\",\"data\":{\"2\":22,\"3\":33,\"4\":44,\"5\":55,\"6\":66,\"7\":77,\"8\":88,\"9\":99,\"A\":AA,\"B\":BB,\"C\":CC,\"D\":DD,\"E\":EE,\"F\":FF,\"G\":GG,\"H\":\"HH\"},\"I\":0}";
jsmn_parser parser;
jsmntok_t tokens[64]; // 假设最多解析x个tokens
const char *value;
uint16_t value_len;
char tmp[64];
// 初始化解析器
jsmn_init(&parser);
// 解析JSON字符串
int num_tokens = jsmn_parse(&parser, json, strlen(json), tokens, sizeof(tokens)/sizeof(tokens[0]));
if (num_tokens < 0) {
my_printf("Failed to parse JSON: %d\n", num_tokens);
return 1;
}
int i, j, k;
for(i = 0;i < num_tokens; i++)
{
my_printf("[line:%3d][%2d][type:%16s][size:%d][%.*s]\n", __LINE__, i, get_jsmn_token_type(tokens[i].type), tokens[i].size, tokens[i].end-tokens[i].start, json+tokens[i].start);
}
for (i = 0; i < num_tokens; i++)
{
if (tokens[i].type == JSMN_STRING && tokens[i].size == 1)
{ // name均为JSMN_STRING且size=1
my_printf("[line:%3d][%2d][type:%16s][size:%d]key: %.*s ",__LINE__, i, get_jsmn_token_type(tokens[i].type), tokens[i].size, tokens[i].end-tokens[i].start, json+tokens[i].start);
if (jsoneq(json, &tokens[i], "data") == 0)
{ // data内为object
jsmntok_t *data_token = &tokens[i + 1];
my_printf("\n[line:%3d][%2d][type:%16s][size:%d]value:%.*s\n",__LINE__, i + 1, get_jsmn_token_type(data_token->type), data_token->size, data_token->end-data_token->start, json+data_token->start);
if (data_token->type == JSMN_OBJECT)
{
for (j=i+2, k=0; jsize; j++,k++)
{
if (tokens[j].type == JSMN_STRING && tokens[j].size == 1)
{
my_printf("[line:%3d][%2d][type:%16s][size:%d]key: %.*s ",__LINE__, j, get_jsmn_token_type(tokens[j].type), tokens[j].size, tokens[j].end-tokens[j].start, json+tokens[j].start);
// 获取value
value = json + tokens[j + 1].start;
value_len = tokens[j + 1].end - tokens[j + 1].start;
memset (tmp, 0, sizeof(tmp));
if (value_len && value_len < sizeof(tmp))
{
memcpy (tmp, value, value_len);
my_printf("[line:%3d]value:%.*s [size:%d][type:%16s]\n", __LINE__, value_len, value, tokens[j+1].size, get_jsmn_token_type(tokens[j+1].type));
}
j ++;
}
}
i = j-1;
}
}
else
{
value = json + tokens[i + 1].start;
value_len = tokens[i + 1].end - tokens[i + 1].start;
my_printf("[line:%3d]value:%.*s [size:%d][type:%16s]\n", __LINE__, value_len, value, tokens[i+1].size, get_jsmn_token_type(tokens[i+1].type));
i++;
}
}
}
return 0;
}
输出结果如下，可以看出类型的不同（带引号和不带引号区别，OBJECT）
[line: 60][ 0][type: JSMN_OBJECT][size:3][{"1":"11","data":{"2":22,"3":33,"4":44,"5":55,"6":66,"7":77,"8":88,"9":99,"A":AA,"B":BB,"C":CC,"D":DD,"E":EE,"F":FF,"G":GG,"H":"HH"},"I":0}]
[line: 60][ 1][type: JSMN_STRING][size:1][1]
[line: 60][ 2][type: JSMN_STRING][size:0][11]
[line: 60][ 3][type: JSMN_STRING][size:1][data]
[line: 60][ 4][type: JSMN_OBJECT][size:16][{"2":22,"3":33,"4":44,"5":55,"6":66,"7":77,"8":88,"9":99,"A":AA,"B":BB,"C":CC,"D":DD,"E":EE,"F":FF,"G":GG,"H":"HH"}]
[line: 60][ 5][type: JSMN_STRING][size:1][2]
[line: 60][ 6][type: JSMN_PRIMITIVE][size:0][22]
[line: 60][ 7][type: JSMN_STRING][size:1][3]
[line: 60][ 8][type: JSMN_PRIMITIVE][size:0][33]
[line: 60][ 9][type: JSMN_STRING][size:1][4]
[line: 60][10][type: JSMN_PRIMITIVE][size:0][44]
[line: 60][11][type: JSMN_STRING][size:1][5]
[line: 60][12][type: JSMN_PRIMITIVE][size:0][55]
[line: 60][13][type: JSMN_STRING][size:1][6]
[line: 60][14][type: JSMN_PRIMITIVE][size:0][66]
[line: 60][15][type: JSMN_STRING][size:1][7]
[line: 60][16][type: JSMN_PRIMITIVE][size:0][77]
[line: 60][17][type: JSMN_STRING][size:1][8]
[line: 60][18][type: JSMN_PRIMITIVE][size:0][88]
[line: 60][19][type: JSMN_STRING][size:1][9]
[line: 60][20][type: JSMN_PRIMITIVE][size:0][99]
[line: 60][21][type: JSMN_STRING][size:1][A]
[line: 60][22][type: JSMN_PRIMITIVE][size:0][AA]
[line: 60][23][type: JSMN_STRING][size:1][B]
[line: 60][24][type: JSMN_PRIMITIVE][size:0][BB]
[line: 60][25][type: JSMN_STRING][size:1][C]
[line: 60][26][type: JSMN_PRIMITIVE][size:0][CC]
[line: 60][27][type: JSMN_STRING][size:1][D]
[line: 60][28][type: JSMN_PRIMITIVE][size:0][DD]
[line: 60][29][type: JSMN_STRING][size:1][E]
[line: 60][30][type: JSMN_PRIMITIVE][size:0][EE]
[line: 60][31][type: JSMN_STRING][size:1][F]
[line: 60][32][type: JSMN_PRIMITIVE][size:0][FF]
[line: 60][33][type: JSMN_STRING][size:1][G]
[line: 60][34][type: JSMN_PRIMITIVE][size:0][GG]
[line: 60][35][type: JSMN_STRING][size:1][H]
[line: 60][36][type: JSMN_STRING][size:0][HH]
[line: 60][37][type: JSMN_STRING][size:1][I]
[line: 60][38][type: JSMN_PRIMITIVE][size:0][0]
[line: 67][ 1][type: JSMN_STRING][size:1]key: 1 [line: 99]value:11 [size:0][type: JSMN_STRING]
[line: 67][ 3][type: JSMN_STRING][size:1]key: data
[line: 71][ 4][type: JSMN_OBJECT][size:16]value:{"2":22,"3":33,"4":44,"5":55,"6":66,"7":77,"8":88,"9":99,"A":AA,"B":BB,"C":CC,"D":DD,"E":EE,"F":FF,"G":GG,"H":"HH"}
[line: 78][ 5][type: JSMN_STRING][size:1]key: 2 [line: 86]value:22 [size:0][type: JSMN_PRIMITIVE]
[line: 78][ 7][type: JSMN_STRING][size:1]key: 3 [line: 86]value:33 [size:0][type: JSMN_PRIMITIVE]
[line: 78][ 9][type: JSMN_STRING][size:1]key: 4 [line: 86]value:44 [size:0][type: JSMN_PRIMITIVE]
[line: 78][11][type: JSMN_STRING][size:1]key: 5 [line: 86]value:55 [size:0][type: JSMN_PRIMITIVE]
[line: 78][13][type: JSMN_STRING][size:1]key: 6 [line: 86]value:66 [size:0][type: JSMN_PRIMITIVE]
[line: 78][15][type: JSMN_STRING][size:1]key: 7 [line: 86]value:77 [size:0][type: JSMN_PRIMITIVE]
[line: 78][17][type: JSMN_STRING][size:1]key: 8 [line: 86]value:88 [size:0][type: JSMN_PRIMITIVE]
[line: 78][19][type: JSMN_STRING][size:1]key: 9 [line: 86]value:99 [size:0][type: JSMN_PRIMITIVE]
[line: 78][21][type: JSMN_STRING][size:1]key: A [line: 86]value:AA [size:0][type: JSMN_PRIMITIVE]
[line: 78][23][type: JSMN_STRING][size:1]key: B [line: 86]value:BB [size:0][type: JSMN_PRIMITIVE]
[line: 78][25][type: JSMN_STRING][size:1]key: C [line: 86]value:CC [size:0][type: JSMN_PRIMITIVE]
[line: 78][27][type: JSMN_STRING][size:1]key: D [line: 86]value:DD [size:0][type: JSMN_PRIMITIVE]
[line: 78][29][type: JSMN_STRING][size:1]key: E [line: 86]value:EE [size:0][type: JSMN_PRIMITIVE]
[line: 78][31][type: JSMN_STRING][size:1]key: F [line: 86]value:FF [size:0][type: JSMN_PRIMITIVE]
[line: 78][33][type: JSMN_STRING][size:1]key: G [line: 86]value:GG [size:0][type: JSMN_PRIMITIVE]
[line: 78][35][type: JSMN_STRING][size:1]key: H [line: 86]value:HH [size:0][type: JSMN_STRING]
[line: 67][37][type: JSMN_STRING][size:1]key: I [line: 99]value:0 [size:0][type: JSMN_PRIMITIVE].vscode目录下：
c_cpp_properties.json内容：
{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
],
"cStandard": "c17",
"cppStandard": "c++17",
"compilerPath": "E:\\codeblocks-20.03mingw-nosetup\\MinGW\\bin\\g++.exe"
}
],
"version": 4
}tasks.json内容：
{
"version": "2.0.0",
"tasks": [
{
"type": "cppbuild",
"label": "编译jsmn项目文件",
"command": "E:\\codeblocks-20.03mingw-nosetup\\MinGW\\bin\\g++.exe",
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${fileDirname}\\${fileBasenameNoExtension}.exe"
],
"options": {
"cwd": "E:\\codeblocks-20.03mingw-nosetup\\MinGW\\bin"
},
"problemMatcher": [
"$gcc"
],
"group": "build",
"detail": "编译器: E:\\codeblocks-20.03mingw-nosetup\\MinGW\\bin\\g++.exe"
}
]
}launch.json内容：
{
// 使用 IntelliSense 了解相关属性。
// 悬停以查看现有属性的描述。
// 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "(gdb) 启动",
"type": "cppdbg",
"request": "launch",
"program": "${fileDirname}\\${fileBasenameNoExtension}.exe",
"args": [],
"stopAtEntry": false,
"cwd": "${fileDirname}",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"miDebuggerPath": "E:\\codeblocks-20.03mingw-nosetup\\MinGW\\bin\\gdb.exe",
"setupCommands": [
{
"description": "为 gdb 启用整齐打印",
"text": "-enable-pretty-printing",
"ignoreFailures": true
},
{
"description": "将反汇编风格设置为 Intel",
"text": "-gdb-set disassembly-flavor intel",
"ignoreFailures": true
}
]
}
]
}