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/* $Id: file.c 2191 2004-09-10 00:49:47Z victor $ */

#include "bbs.h"

/**
 * file.c 舫撠隞"銵"箏桐瑼獢€摰蝢拍銝€鈭 operation€
 **/

/**
 * 喳 file 瑼銵
 * @param file
 */
int file_count_line(char *file)
{
    FILE           *fp;
    int             count = 0;
    char            buf[200];

    if ((fp = fopen(file, "r"))) {
    while (fgets(buf, sizeof(buf), fp)) {
        if (strchr(buf, '\n') == NULL)
        continue;
        count++;
    }
    fclose(fp);
    }
    return count;
}

/**
 * 撠 string append 唳獢 file 敺蝡
 * @param file 閬鋡 append 瑼
 * @param string
 * @return 喳 0嚗憭望喳 -1€
 */
int file_append_line(char *file, char *string)
{
    FILE *fp;
    if ((fp = fopen(file, "a")) == NULL)
    return -1;
    flock(fileno(fp), LOCK_EX);
    fputs(string, fp);
    flock(fileno(fp), LOCK_UN);
    fclose(fp);
    return 0;
}

#ifndef _BBS_UTIL_C_
/**
 * 敺瑼獢 file 銝剖芷 prefix  string 瘥銝€銵€(撠敹 race)
 * @param file
 * @param string
 * @param case_sensitive 摮銝脫撠臬 case sensitive
 */
int file_delete_line(char *file, char *string, int  case_sensitive)
{
    FILE           *fp, *nfp = NULL;
    char            fnew[80];
    char            genbuf[STRLEN + 1];

    sprintf(fnew, "%s.%3.3X", file, rand() & 0xFFF);
    if ((fp = fopen(file, "r")) && (nfp = fopen(fnew, "w"))) {
    int             length = strlen(string);

    while (fgets(genbuf, sizeof(genbuf), fp))
        if ((genbuf[0] > ' ')) {
        if (((case_sensitive && strncmp(genbuf, string, length)) ||
            (!case_sensitive && strncasecmp(genbuf, string, length))))
                fputs(genbuf, nfp);
        }
    Rename(fnew, file);
    }
    if(fp)
    fclose(fp);
    if(nfp)
    fclose(nfp);
    return 0;
}
#endif

/**
 * 喳瑼獢 file 銝剜臬行 string €€摮銝脯€
 */
int file_exist_record(char *file, char *string)
{
    FILE           *fp;
    char            buf[STRLEN], *ptr;

    if ((fp = fopen(file, "r")) == NULL)
    return 0;

    while (fgets(buf, STRLEN, fp)) {
    if ((ptr = strtok(buf, str_space)) && !strcasecmp(ptr, string))
        return 1;
    }
    fclose(fp);
    return 0;
}

/**
 * 撠瘥銝€蝑 record  func €隞嗡€
 * @param file
 * @param func 瘥蝑 record  handler嚗箔€ function pointer€
 *        蝚砌€€豢舀獢銝剔銝€銵嚗蝚砌€貊 info€
 * @param info 銝€€憿憭詻€
 */
int file_foreach_entry(char *file, int (*func)(char *, int), int info)
{
    char line[80];
    FILE *fp;

    if ((fp = fopen(file, "r")) == NULL)
    return -1;

    while (fgets(line, sizeof(line), fp)) {
    (*func)(line, info);
    }

    fclose(fp);
    return 0;
}