19.inih解析配置ini文件
inih解析配置ini文件
1.inih源码查看
通过自定义的一个ini文件格式如：
[setion]
<key>=<value>
name=value
...=...
[beep]
key=0x45
gpio_pin=9
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=0
voice_set_status=1
查看ubuntu版本的inih是否存在安装包
apt-cache search libinih
kevin@kevin-virtual-machine:~$ apt-cache search libinih
libinih-dev - simple .INI file parser (development files)
libinih1 - simple .INI file parser
下载inih源代码：
apt source libinih-dev
源码是获取ini.c、ini.h的解析文件
不下载可以复制下面的代码
ini.c
/* inih -- simple .INI file parser
SPDX-License-Identifier: BSD-3-Clause
Copyright (C) 2009-2020, Ben Hoyt
inih is released under the New BSD license (see LICENSE.txt). Go to the project
home page for more info:
https://github.com/benhoyt/inih
*/
#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "ini.h"
#if INI_CUSTOM_ALLOCATOR
#include <stddef.h>
void* ini_malloc(size_t size);
void ini_free(void* ptr);
void* ini_realloc(void* ptr, size_t size);
#else
#include <stdlib.h>
#define ini_malloc malloc
#define ini_free free
#define ini_realloc realloc
#endif
#define MAX_SECTION 50
#define MAX_NAME 50
bool ini_allow_multiline = INI_ALLOW_MULTILINE;
bool ini_allow_bom = INI_ALLOW_BOM;
char* ini_start_comment_prefixes = INI_START_COMMENT_PREFIXES;
bool ini_allow_inline_comments = INI_ALLOW_INLINE_COMMENTS;
char* ini_inline_comment_prefixes = INI_INLINE_COMMENT_PREFIXES;
bool ini_use_stack = INI_USE_STACK;
int ini_max_line = INI_MAX_LINE;
bool ini_allow_realloc = INI_ALLOW_REALLOC;
int ini_initial_alloc = INI_INITIAL_ALLOC;
bool ini_stop_on_first_error = INI_STOP_ON_FIRST_ERROR;
static bool ini_call_handler_on_new_section = false;
bool ini_allow_no_value = INI_ALLOW_NO_VALUE;
/* Used by ini_parse_string() to keep track of string parsing state. */
typedef struct {
const char* ptr;
size_t num_left;
} ini_parse_string_ctx;
/* Strip whitespace chars off end of given string, in place. Return s. */
static char* rstrip(char* s)
{
char* p = s + strlen(s);
while (p > s && isspace((unsigned char)(*--p)))
*p = '\0';
return s;
}
/* Return pointer to first non-whitespace char in given string. */
static char* lskip(const char* s)
{
while (*s && isspace((unsigned char)(*s)))
s++;
return (char*)s;
}
/* Return pointer to first char (of chars) or inline comment in given string,
or pointer to NUL at end of string if neither found. Inline comment must
be prefixed by a whitespace character to register as a comment. */
static char* find_chars_or_comment(const char* s, const char* chars)
{
if (ini_allow_inline_comments) {
int was_space = 0;
while (*s && (!chars || !strchr(chars, *s)) &&
!(was_space && strchr(ini_inline_comment_prefixes, *s))) {
was_space = isspace((unsigned char)(*s));
s++;
}
} else {
while (*s && (!chars || !strchr(chars, *s))) {
s++;
}
}
return (char*)s;
}
/* Similar to strncpy, but ensures dest (size bytes) is
NUL-terminated, and doesn't pad with NULs. */
static char* strncpy0(char* dest, const char* src, size_t size)
{
/* Could use strncpy internally, but it causes gcc warnings (see issue #91) */
size_t i;
for (i = 0; i < size - 1 && src[i]; i++)
dest[i] = src[i];
dest[i] = '\0';
return dest;
}
/* See documentation in header file. */
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
void* user)
{
/* Uses a fair bit of stack (use heap instead if you need to) */
char line_buf[ini_use_stack ? ini_max_line : 0];
char* line;
size_t max_line;
if (ini_use_stack) {
line = line_buf;
max_line = ini_max_line;
} else {
max_line = ini_initial_alloc;
}
char* new_line;
size_t offset;
char section[MAX_SECTION] = "";
char prev_name[MAX_NAME] = "";
char* start;
char* end;
char* name;
char* value;
int lineno = 0;
int error = 0;
if (!ini_use_stack) {
line = (char*)ini_malloc(ini_initial_alloc);
if (!line) {
return -2;
}
}
#if INI_HANDLER_LINENO
#define HANDLER(u, s, n, v) handler(u, s, n, v, lineno)
#else
#define HANDLER(u, s, n, v) handler(u, s, n, v)
#endif
/* Scan through stream line by line */
while (reader(line, (int)max_line, stream) != NULL) {
if (ini_allow_realloc && !ini_use_stack) {
offset = strlen(line);
while (offset == max_line - 1 && line[offset - 1] != '\n') {
max_line *= 2;
if (max_line > ini_max_line)
max_line = ini_max_line;
new_line = ini_realloc(line, max_line);
if (!new_line) {
ini_free(line);
return -2;
}
line = new_line;
if (reader(line + offset, (int)(max_line - offset), stream) == NULL)
break;
if (max_line >= ini_max_line)
break;
offset += strlen(line + offset);
}
}
lineno++;
start = line;
if (ini_allow_bom && lineno == 1 && (unsigned char)start[0] == 0xEF &&
(unsigned char)start[1] == 0xBB &&
(unsigned char)start[2] == 0xBF) {
start += 3;
}
start = lskip(rstrip(start));
if (strchr(ini_start_comment_prefixes, *start)) {
/* Start-of-line comment */
}
else if (ini_allow_multiline && *prev_name && *start && start > line) {
/* Non-blank line with leading whitespace, treat as continuation
of previous name's value (as per Python configparser). */
if (!HANDLER(user, section, prev_name, start) && !error)
error = lineno;
}
else if (*start == '[') {
/* A "[section]" line */
end = find_chars_or_comment(start + 1, "]");
if (*end == ']') {
*end = '\0';
strncpy0(section, start + 1, sizeof(section));
*prev_name = '\0';
if (ini_call_handler_on_new_section && !HANDLER(user, section, NULL, NULL) && !error)
error = lineno;
}
else if (!error) {
/* No ']' found on section line */
error = lineno;
}
}
else if (*start) {
/* Not a comment, must be a name[=:]value pair */
end = find_chars_or_comment(start, "=:");
if (*end == '=' || *end == ':') {
*end = '\0';
name = rstrip(start);
value = end + 1;
if (ini_allow_inline_comments) {
end = find_chars_or_comment(value, NULL);
if (*end)
*end = '\0';
}
value = lskip(value);
rstrip(value);
/* Valid name[=:]value pair found, call handler */
strncpy0(prev_name, name, sizeof(prev_name));
if (!HANDLER(user, section, name, value) && !error)
error = lineno;
}
else if (!error) {
/* No '=' or ':' found on name[=:]value line */
if (ini_allow_no_value) {
*end = '\0';
name = rstrip(start);
if (!HANDLER(user, section, name, NULL) && !error)
error = lineno;
} else {
error = lineno;
}
}
}
if (ini_stop_on_first_error && error)
break;
}
if (!ini_use_stack) {
ini_free(line);
}
return error;
}
/* See documentation in header file. */
int ini_parse_file(FILE* file, ini_handler handler, void* user)
{
return ini_parse_stream((ini_reader)fgets, file, handler, user);
}
/* See documentation in header file. */
int ini_parse(const char* filename, ini_handler handler, void* user)
{
FILE* file;
int error;
file = fopen(filename, "r");
if (!file)
return -1;
error = ini_parse_file(file, handler, user);
fclose(file);
return error;
}
/* An ini_reader function to read the next line from a string buffer. This
is the fgets() equivalent used by ini_parse_string(). */
static char* ini_reader_string(char* str, int num, void* stream) {
ini_parse_string_ctx* ctx = (ini_parse_string_ctx*)stream;
const char* ctx_ptr = ctx->ptr;
size_t ctx_num_left = ctx->num_left;
char* strp = str;
char c;
if (ctx_num_left == 0 || num < 2)
return NULL;
while (num > 1 && ctx_num_left != 0) {
c = *ctx_ptr++;
ctx_num_left--;
*strp++ = c;
if (c == '\n')
break;
num--;
}
*strp = '\0';
ctx->ptr = ctx_ptr;
ctx->num_left = ctx_num_left;
return str;
}
/* See documentation in header file. */
int ini_parse_string(const char* string, ini_handler handler, void* user) {
ini_parse_string_ctx ctx;
ctx.ptr = string;
ctx.num_left = strlen(string);
return ini_parse_stream((ini_reader)ini_reader_string, &ctx, handler,
user);
}
ini.h
/* inih -- simple .INI file parser
SPDX-License-Identifier: BSD-3-Clause
Copyright (C) 2009-2020, Ben Hoyt
inih is released under the New BSD license (see LICENSE.txt). Go to the project
home page for more info:
https://github.com/benhoyt/inih
*/
#ifndef INI_H
#define INI_H
/* Make this header file easier to include in C++ code */
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdbool.h>
/* Nonzero if ini_handler callback should accept lineno parameter. */
#ifndef INI_HANDLER_LINENO
#define INI_HANDLER_LINENO 0
#endif
/* Typedef for prototype of handler function. */
#if INI_HANDLER_LINENO
typedef int (*ini_handler)(void* user, const char* section,
const char* name, const char* value,
int lineno);
#else
typedef int (*ini_handler)(void* user, const char* section,
const char* name, const char* value);
#endif
/* Typedef for prototype of fgets-style reader function. */
typedef char* (*ini_reader)(char* str, int num, void* stream);
/* Parse given INI-style file. May have [section]s, name=value pairs
(whitespace stripped), and comments starting with ';' (semicolon). Section
is "" if name=value pair parsed before any section heading. name:value
pairs are also supported as a concession to Python's configparser.
For each name=value pair parsed, call handler function with given user
pointer as well as section, name, and value (data only valid for duration
of handler call). Handler should return nonzero on success, zero on error.
Returns 0 on success, line number of first error on parse error (doesn't
stop on first error), -1 on file open error, or -2 on memory allocation
error (only when INI_USE_STACK is zero).
*/
int ini_parse(const char* filename, ini_handler handler, void* user);
/* Same as ini_parse(), but takes a FILE* instead of filename. This doesn't
close the file when it's finished -- the caller must do that. */
int ini_parse_file(FILE* file, ini_handler handler, void* user);
/* Same as ini_parse(), but takes an ini_reader function pointer instead of
filename. Used for implementing custom or string-based I/O (see also
ini_parse_string). */
int ini_parse_stream(ini_reader reader, void* stream, ini_handler handler,
void* user);
/* Same as ini_parse(), but takes a zero-terminated string with the INI data
instead of a file. Useful for parsing INI data from a network socket or
already in memory. */
int ini_parse_string(const char* string, ini_handler handler, void* user);
/* Nonzero to allow multi-line value parsing, in the style of Python's
configparser. If allowed, ini_parse() will call the handler with the same
name for each subsequent line parsed. */
#ifndef INI_ALLOW_MULTILINE
#define INI_ALLOW_MULTILINE 1
#endif
extern bool ini_allow_multiline;
/* Nonzero to allow a UTF-8 BOM sequence (0xEF 0xBB 0xBF) at the start of
the file. See https://github.com/benhoyt/inih/issues/21 */
#ifndef INI_ALLOW_BOM
#define INI_ALLOW_BOM 1
#endif
extern bool ini_allow_bom;
/* Chars that begin a start-of-line comment. Per Python configparser, allow
both ; and # comments at the start of a line by default. */
#ifndef INI_START_COMMENT_PREFIXES
#define INI_START_COMMENT_PREFIXES ";#"
#endif
extern char* ini_start_comment_prefixes;
/* Nonzero to allow inline comments (with valid inline comment characters
specified by INI_INLINE_COMMENT_PREFIXES). Set to 0 to turn off and match
Python 3.2+ configparser behaviour. */
#ifndef INI_ALLOW_INLINE_COMMENTS
#define INI_ALLOW_INLINE_COMMENTS 1
#endif
extern bool ini_allow_inline_comments;
#ifndef INI_INLINE_COMMENT_PREFIXES
#define INI_INLINE_COMMENT_PREFIXES ";"
#endif
extern char* ini_inline_comment_prefixes;
/* Nonzero to use stack for line buffer, zero to use heap (malloc/free). */
#ifndef INI_USE_STACK
#define INI_USE_STACK 1
#endif
extern bool ini_use_stack;
/* Maximum line length for any line in INI file (stack or heap). Note that
this must be 3 more than the longest line (due to '\r', '\n', and '\0'). */
#ifndef INI_MAX_LINE
#define INI_MAX_LINE 200
#endif
extern int ini_max_line;
/* Nonzero to allow heap line buffer to grow via realloc(), zero for a
fixed-size buffer of INI_MAX_LINE bytes. Only applies if INI_USE_STACK is
zero. */
#ifndef INI_ALLOW_REALLOC
#define INI_ALLOW_REALLOC 0
#endif
extern bool ini_allow_realloc;
/* Initial size in bytes for heap line buffer. Only applies if INI_USE_STACK
is zero. */
#ifndef INI_INITIAL_ALLOC
#define INI_INITIAL_ALLOC 200
#endif
extern int ini_initial_alloc;
/* Stop parsing on first error (default is to keep parsing). */
#ifndef INI_STOP_ON_FIRST_ERROR
#define INI_STOP_ON_FIRST_ERROR 0
#endif
extern bool ini_stop_on_first_error;
/* Nonzero to call the handler at the start of each new section (with
name and value NULL). Default is to only call the handler on
each name=value pair. */
#ifndef INI_CALL_HANDLER_ON_NEW_SECTION
#define INI_CALL_HANDLER_ON_NEW_SECTION 0
#endif
//extern bool ini_call_handler_on_new_section;
/* Nonzero to allow a name without a value (no '=' or ':' on the line) and
call the handler with value NULL in this case. Default is to treat
no-value lines as an error. */
#ifndef INI_ALLOW_NO_VALUE
#define INI_ALLOW_NO_VALUE 0
#endif
extern bool ini_allow_no_value;
/* Nonzero to use custom ini_malloc, ini_free, and ini_realloc memory
allocation functions (INI_USE_STACK must also be 0). These functions must
have the same signatures as malloc/free/realloc and behave in a similar
way. ini_realloc is only needed if INI_ALLOW_REALLOC is set. */
#ifndef INI_CUSTOM_ALLOCATOR
#define INI_CUSTOM_ALLOCATOR 0
#endif
#ifdef __cplusplus
}
#endif
#endif /* INI_H */
2.inih解析ini配置文件
gdevice.ini
[lock]
key=0x44
gpio_pin=8
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=1
voice_set_status=1
[beep]
key=0x45
gpio_pin=9
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=0
voice_set_status=1
[BR led]
key=0x42
gpio_pin=5
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=0
voice_set_status=0
[LV led]
key=0x41
gpio_pin=2
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=0
voice_set_status=0
[fan]
key=0x43
gpio_pin=7
gpio_mode=OUTPUT
gpio_status=HIGH
check_face_status=0
voice_set_status=0
iniTest.c
/* Example: parse a simple configuration file */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ini.h"
#define MATCH(s, n) strcmp(section, s) == 0 && strcmp(name, n) == 0
struct gdevice
{
char dev_name[128]; //设备名称
int key; //key值，用于匹配控制指令的值
int gpio_pin; //控制的gpio引脚
int gpio_mode; //输入输出模式
int gpio_status; //高低电平状态
int check_face_status; //是否进行人脸检测状态
int voice_set_status; //是否语音语音播报
struct gdevice *next;
};
struct gdevice *pgdevHead = NULL;
#define INPUT 0
#define OUTPUT 1
#define LOW 0
#define HIGH 1
static int handler(void* user, const char* section, const char* name,const char* value)
{
struct gdevice *pdev = NULL;
if(NULL == pgdevHead){
pgdevHead = (struct gdevice *)malloc(sizeof(struct gdevice));
pgdevHead->next = NULL;
memset(pgdevHead,0,sizeof(struct gdevice));
strcpy(pgdevHead->dev_name,section);
}else if(0 != strcmp(pgdevHead->dev_name,section)){
pdev = (struct gdevice *)malloc(sizeof(struct gdevice));
memset(pdev,0,sizeof(struct gdevice));
strcpy(pdev->dev_name,section);
pdev->next = pgdevHead;
pgdevHead = pdev;
}
if(NULL != pgdevHead){
if(MATCH(pgdevHead->dev_name,"key")){
sscanf(value,"%x",&pgdevHead->key);
printf("%d|pgdevHead->key=%x\n",__LINE__,pgdevHead->key);
}else if(MATCH(pgdevHead->dev_name,"gpio_pin")){
pgdevHead->gpio_pin = atoi(value);
}else if(MATCH(pgdevHead->dev_name,"gpio_mode")){
if(strcmp(value,"OUTPUT") == 0){
pgdevHead->gpio_mode = OUTPUT;
}else if(strcmp(value,"INPUT") == 0){
pgdevHead->gpio_mode = INPUT;
}
}else if(MATCH(pgdevHead->dev_name,"gpio_status")){
if(strcmp(value,"LOW") == 0){
pgdevHead->gpio_status = LOW;
}else if(strcmp(value,"HIGH") == 0){
pgdevHead->gpio_status = HIGH;
}
}else if(MATCH(pgdevHead->dev_name,"check_face_status")){
pgdevHead->check_face_status = atoi(value);
}else if(MATCH(pgdevHead->dev_name,"voice_set_status")){
pgdevHead->voice_set_status = atoi(value);
}
}
return 1;
}
int main(int argc, char* argv[])
{
if (ini_parse("gdevice.ini", handler, NULL) < 0) {
printf("Can't load 'gdevice.ini'\n");
return 1;
}
struct gdevice *pdev = pgdevHead;
while (pdev)
{
printf("dev_name=%s,",pdev->dev_name);
printf("key=%x,",pdev->key);
printf("gpio_pin=%d,",pdev->gpio_pin);
printf("gpio_mode=%d,",pdev->gpio_mode);
printf("gpio_status=%d,",pdev->gpio_status);
printf("check_face_status=%d,",pdev->check_face_status);
printf("voice_set_status=%d \n",pdev->voice_set_status);
pdev = pdev->next;
}
return 0;
}
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