config.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <ctype.h>

#define KEYVALLEN 100

/*   删除左边的空格   */
char * l_trim(char * szOutput, const char *szInput)
{
    assert(szInput != NULL);
    assert(szOutput != NULL);
    assert(szOutput != szInput);
    for   ( ; *szInput != '\0' && isspace(*szInput); ++szInput){
        ;
    }
    return strcpy(szOutput, szInput);
}

/*   删除右边的空格   */
char *r_trim(char *szOutput, const char *szInput)
{
    char *p = NULL;
    assert(szInput != NULL);
    assert(szOutput != NULL);
    assert(szOutput != szInput);
    strcpy(szOutput, szInput);
    for(p = szOutput + strlen(szOutput) - 1; p >= szOutput && isspace(*p); --p){
        ;
    }
    *(++p) = '\0';
    return szOutput;
}

/*   删除两边的空格   */
char * a_trim(char * szOutput, const char * szInput)
{
    char *p = NULL;
    assert(szInput != NULL);
    assert(szOutput != NULL);
    l_trim(szOutput, szInput);
    for   (p = szOutput + strlen(szOutput) - 1;p >= szOutput && isspace(*p); --p){
        ;
    }
    *(++p) = '\0';
    return szOutput;
}


/* -------------------------------------------*/
/**
 * @brief  从配置文件中得到相对应的参数
 *
 * @param profile   配置文件路径
 * @param AppName   配置文件title名称[title]
 * @param KeyName   key
 * @param KeyVal    (OUT)  得到的value
 *
 * @returns   
 *      0 succ, -1 fail
 */
/* -------------------------------------------*/
int GetProfileString(char *profile, char *AppName, char *KeyName, char *KeyVal )
{
    char appname[32],keyname[32];
    char *buf,*c;
    char buf_i[KEYVALLEN], buf_o[KEYVALLEN];
    FILE *fp;
    int found=0; /* 1 AppName 2 KeyName */
    if( (fp=fopen( profile,"r" ))==NULL ){
        printf( "openfile [%s] error [%s]\n",profile,strerror(errno) );
        return(-1);
    }
    fseek( fp, 0, SEEK_SET );
    memset( appname, 0, sizeof(appname) );
    sprintf( appname,"[%s]", AppName );

    while( !feof(fp) && fgets( buf_i, KEYVALLEN, fp )!=NULL ){
        l_trim(buf_o, buf_i);
        if( strlen(buf_o) <= 0 )
            continue;
        buf = NULL;
        buf = buf_o;

        if( found == 0 ){
            if( buf[0] != '[' ) {
                continue;
            } else if ( strncmp(buf,appname,strlen(appname))==0 ){
                found = 1;
                continue;
            }

        } else if( found == 1 ){
            if( buf[0] == '#' ){
                continue;
            } else if ( buf[0] == '[' ) {
                break;
            } else {
                if( (c = (char*)strchr(buf, '=')) == NULL )
                    continue;
                memset( keyname, 0, sizeof(keyname) );

                sscanf( buf, "%[^=|^ |^\t]", keyname );
                if( strcmp(keyname, KeyName) == 0 ){
                    sscanf( ++c, "%[^\n]", KeyVal );
                    char *KeyVal_o = (char *)malloc(strlen(KeyVal) + 1);
                    if(KeyVal_o != NULL){
                        memset(KeyVal_o, 0, strlen(KeyVal) + 1);
                        a_trim(KeyVal_o, KeyVal);
                        if(KeyVal_o && strlen(KeyVal_o) > 0)
                            strcpy(KeyVal, KeyVal_o);
                        free(KeyVal_o);
                        KeyVal_o = NULL;
                    }
                    found = 2;
                    break;
                } else {
                    continue;
                }
            }
        }
    }
    fclose( fp );
    if( found == 2 )
        return(0);
    else
        return(-1);
}

#if 0
int main()
{
    char host_name[256];

    GetProfileString("./conf/dstorage.conf", "web_server", "host_name", host_name);
    printf("%s\n",host_name);

    GetProfileString("./conf/dstorage.conf", "storage_web_server", "host_name", host_name);
    printf("%s\n",host_name);

    return 0;
}
#endif