使用C语言读取properties文件V1.0 分类: H_HISTORY 2013-02-26 12:37 946人阅读 评论(0) 收藏
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
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