iniparser示例程序

下载iniparser，下载地址：http://blog.youkuaiyun.com/zahuopuboss/article/details/8817538

将iniparser源代码中src目录下的4个文件dictionary.c、dictionary.h、iniparser.c、iniparser.h和示例程序放到同一个目录下

使用下面的Makefile编译

 

#
#

EXEC = initest

CC	= gcc

CFLAGS += -Wall -Werror
CFLAGS += -g -MD -O2
CFLAGS += -fPIC -ansi -pedantic

SRCS = $(wildcard *.c)
OBJS = $(SRCS:%.c=obj/%.o)
DEPS = $(SRCS:%.c=obj/%.d)

all : $(EXEC)
	@:

$(EXEC) : $(OBJS)
	$(CC) $(LDFLAGS) $^ -o $@

obj/%.o : %.c
	@mkdir -p obj
	$(CC) $(CFLAGS) -c $< -o $@

clean :
	rm -rf obj

sinclude $(DEPS)

.PHONY : all clean

 

示例程序

 

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>

#include "iniparser.h"

#define BUF_SIZ 4096

static void
usage(void)
{
	printf( "  new section           : exec inifile section\n"
		"  get key's value       : exec inifile section key\n"
		"  new or edit key=value : exec inifile section key value\n"
		"  it will be created if inifile is not existed\n");
}

static dictionary *
ini_parse(char *ini_name)
{
	FILE *ini = NULL;
	dictionary *dict = NULL;

	/* make sure the ini file is exist */
	ini = fopen(ini_name, "a");
	if (ini == NULL) {
		perror("fopen() a");
		goto out;
	}
	fclose(ini);

	dict = iniparser_load(ini_name);
	if (dict == NULL) {
		printf("cannot parse file: %s\n", ini_name);
	}

out:
	return dict;
}

static void
ini_set(dictionary *dict, char *section_key, char *value)
{
	int ret = 0;

	ret = iniparser_set(dict, section_key, value);
	if (ret < 0) {
		printf("%s set error", section_key);
	}
}

static void
ini_get(dictionary *dict, char *section_key, char *buf, int len)
{
	char *s = NULL;

	s = iniparser_getstring(dict, section_key, NULL);
	if (s == NULL) {
		printf("%s not found\n", section_key);
		return;
	}
	strncpy(buf, s, len);
}

static void
ini_save(dictionary *dict, char *ini_name)
{
	FILE *ini = NULL;

	ini = fopen(ini_name, "w");
	if (ini == NULL) {
		perror("fopen() w");
		printf("cannot save file: %s\n", ini_name);
		return;
	}
	iniparser_dump_ini(dict, ini);
	fclose(ini);
}

static void
ini_process(char *ini_name, char *section, char *key, char *value, char *buf, int len)
{
	int ret = 0;
	dictionary *dict = NULL;
	char *section_key = NULL;
	int size = 0;

	dict = ini_parse(ini_name);
	if (dict == NULL) {
		printf("cannot parse file: %s\n", ini_name);
		return;
	}

	if (key == NULL) {
		ini_set(dict, section, NULL);
		goto save;
	}

	size = strlen(section) + strlen(key) + 1 + 1;/* ':' + '\0' */
	section_key = calloc(size, 1);
	if (section_key == NULL) {
		perror("calloc()");
		goto out;
	}
	ret = sprintf(section_key, "%s:%s", section, key);
	if (ret < 0) {
		printf("snprintf error\n");
		goto free_buf;
	}

	if (value) {
		ini_set(dict, section, NULL);/* make sure the section is exist */
		ini_set(dict, section_key, value);
	} else {
		ini_get(dict, section_key, buf, len);
	}

free_buf:
	free(section_key);
save:
	ini_save(dict, ini_name);
out:
	iniparser_freedict(dict);
}

int
main(int argc, char *argv[])
{
	char *ini_name = NULL;
	char *section = NULL;
	char *key = NULL;
	char *value = NULL;
	char buf[BUF_SIZ];

	if (argc < 3) {
		usage();
		exit(1);
	}

	memset(buf, 0, sizeof(buf));
	ini_name = argv[1];
	section = argv[2];
	if (argc > 3) {
		key = argv[3];
	}
	if (argc > 4) {
		value = argv[4];
	}

	ini_process(ini_name, section, key, value, buf, sizeof(buf) - 1);
	printf("%s\n", buf);

	return 0;
}

 

运行结果

 

$ ./initest test.ini aa
$ ./initest test.ini aa 11 11
$ ./initest test.ini aa 22 22

$ cat test.ini               

[aa]
11                             = 11
22                             = 22