使用C语言读取properties文件V1.0

本程序使用C语言读取类似以下格式的properties文件。

path = /etc/wgetrc

launch_on_start = true

下一版目标：

（1）使用指针代替二维数据或者二维数据的容量减少至最低要求。

（2）忽略所有空格，忽略空行及注释行

（3）头文件规范写法。

文件1：main.c

#include <stdio.h>
#include "read_properties.h"

int main(void){

char names[100][100], values[100][100];

read_properties("/home/lujinhong/scripts/projects/read_properties_file/test.properties", names, values);

return 0;
}

文件2：read_properties.h

void read_properties(char *pathname, char names[100][100], char values[100][100]);

文件3：read_properties.c

/********************************************************************
* This file is used to read the names and values from a properties file,
* and store them in an array.
*
* ******************************************************************/

#include "read_properties.h"
#include <stdio.h>
#include <unistd.h>
#include "utils.h"

void read_properties(char *pathname, char names[100][100], char values[100][100]){

FILE *file;
char line[100];
int i = 0;

file = fopen(pathname, "r");
while(fgets(line, 100, file)){
printf("%s", line);                             //just for test, delete it later.
parseline(line, names[i], values[i]);
i++;
}

fclose(file);

}

文件4：utils.h

void parseline(char *line, char *name, char *value);

文件5：utils.c

/***********************************************************
* Parse content of the line, and store the name and value.
* line example: path=/etc/wgetrc
*
* *********************************************************/
void parseline(char *line, char *name, char *value){

int length = 0, equal = 1; //equal will record the location of the '='
char *begin;

length = strlen(line);

for(begin = line; *begin != '=' && equal <= length; begin ++){
equal++;
}

strncpy(name, line, equal - 1);
line+=equal;
strncpy(value, line, length - equal);

printf("name = %s   value = %s\n", name, value); //just for test, delete it later.

}

运行结果：

path = /etc/wgetrc
name = path     value =  /etc/wgetrc

launch_on_boot = true
name = launch_on_boot   value =  true