sql - .sql ファイルの解析中の間違った出力

Question

テーブルの特定のダンプを入力として受け取り、それを特定の方法で出力に配置する単純な C プログラムを作成する必要があります。必要な情報を解析してメモリ内に入れようとしていますが、問題があります。データを出力しましたが、出力として「奇妙な文字」が表示されます。コードは次のとおりです。

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

typedef struct entityTail
{
    char entity[50];
    struct entityTail* next;
} entityTail;

typedef struct keyTail
{
    char key[300];
    struct keyTail* next;
} keyTail;

typedef struct eventTail
{
    char event[5];
    struct eventTail* next;
} eventTail;

void setATuple(entityTail* entityNew, entityTail* entityNext, keyTail* keyNew, keyTail* keyNext, eventTail* eventNew, eventTail* eventNext, char* startOfParam);

int main(int argc, char* argv[])
{
    if(argc != 2)
    {
        printf("Only 1 param needed: the filename");
        return -1;
    }
    char* buffer = NULL; //this buffer will contain all our conf file
    long size = 0;  //in bytes
    long length = 0; //in chars, must match the "size" variable
    FILE* hFile;
    bool exit = false;
    char* startOfTuple = NULL;
    bool headsSet = false;  //used within a cycle

    entityTail* entityHead = (entityTail*) malloc(sizeof(entityTail));
    keyTail* keyHead = (keyTail*) malloc(sizeof(keyTail));
    eventTail* eventHead = (eventTail*) malloc(sizeof(eventTail));
    entityTail* theEntityTail = NULL;
    keyTail* theKeyTail = NULL;
    eventTail* theEventTail = NULL;

    hFile = fopen( argv[1], "r");        //opening the file in "read-only" mode
    if (hFile == NULL)
    {
        printf("Error: the input file doesn't exist\n");
        return -2;     //error opening the file
    }

    //retrieving the size (in bytes) of my text file
    fseek (hFile , 0 , SEEK_END);   //point to the end of the file
    size = ftell (hFile);   //retrieving the size of the file
    rewind (hFile);     //point to the start

    // allocate memory to contain the whole file:
    buffer = malloc (sizeof(char) * size);
    if (buffer == NULL)
    {
        printf("Error: memory error\n");
        return -3; //memory error
    }
    // copy the file into the buffer:
    length = fread (buffer,1,size,hFile);   //reading "size" elements of 1 byte, stored in hFile
    if (length != size)
    {
        printf("Error: read error\n");
        return -4; //reading error, length and size doesn't match
    }
    /* the whole file is now loaded in the memory buffer. */

    // terminate
    fclose (hFile);

    //now we look for the position where our data starts
    //our entity param is just an int, so it will be not enclosed by the ' symbol
    startOfTuple = strstr(buffer, "VALUES"); //finding "VALUES" inside our table dump
    startOfTuple = strstr(startOfTuple + 1, "("); //now we point to our first tuple
    //now we process the rest of our file
    while(!exit)
    {
        entityTail* entityNew = (entityTail*) malloc(sizeof(entityTail));
        keyTail* keyNew = (keyTail*) malloc(sizeof(keyTail));
        eventTail* eventNew = (eventTail*) malloc(sizeof(eventTail));
        if(!headsSet)   //we need to set our heads
        {
            setATuple(entityHead, NULL, keyHead, NULL, eventHead, NULL, startOfTuple);
            theEntityTail = entityHead;
            theKeyTail = keyHead;
            theEventTail = eventHead;
            headsSet = true;
            printf("\n%s %s %s\n", entityHead->entity, keyHead->key, eventHead->event);
        }

        else
        {
            setATuple(entityNew, theEntityTail, keyNew, theKeyTail, eventNew, theEventTail, startOfTuple);
            theEntityTail = entityNew;
            theKeyTail = keyNew;
            theEventTail = eventNew;
            printf("\n%s  %s  %s\n", entityNew->entity, keyNew->key, eventNew->event);
             exit = true; //debugging purpose
        }
        startOfTuple = strchr(startOfTuple + 1 , '('); //pointing to the next tuple
        if(startOfTuple == NULL) exit = true;
    }
    return 0;
}

void setATuple(entityTail* entityNew, entityTail* entityNext, keyTail* keyNew, keyTail* keyNext, eventTail* eventNew, eventTail* eventNext, char* startOfParam)
{
    int i = 0;
    char* endOfParam = NULL;
    //first we reach the "entity" param (an integer)
    for(i = 0; i < 3; i++)
    {
        startOfParam = strchr(startOfParam + 1, ',');
        endOfParam = strchr(startOfParam + 1, ',');
    }
    //now we set the entityHead
    if(entityNext != NULL)
        entityNew->next = entityNext;
    else    //we're setting the heads
        entityNew->next = NULL;
    strncpy(entityNew->entity, startOfParam + 1, endOfParam - startOfParam - 1);
    //now we set the keyHead; that param is enclosed by two ' symbols
    startOfParam = strchr(endOfParam + 1, '\''); //we look now for the ' symbol, it's easier that look for a comma and then remove the ' symbol
    endOfParam = strchr(startOfParam + 1, '\''); //it should work even if that field in the database is empty
    if(keyNext != NULL)
        keyNew->next = keyNext;
    else
        keyNew->next = NULL;
    strncpy(keyNew->key, startOfParam + 1, endOfParam - startOfParam - 1);
    //now we set the eventHead
    startOfParam = strchr(endOfParam + 1, '\''); //we look now for the ' symbol, it's easier that look for a comma and then remove the ' symbol
    endOfParam = strchr(startOfParam + 1, '\''); //it should work even if that field in the database is empty
    if(eventNext != NULL)
        eventNew->next = eventNext;
    else
        eventNew->next = NULL;
    strncpy(eventNew->event, startOfParam + 1, endOfParam - startOfParam - 1);
}

問題は setATuple 関数に関連していると思いますが、何が問題なのかわかりません。

特定のファイル関連のプログラムなので、処理するはずのファイルをコピーします。ここにあります：

-- MySQL dump 10.13  Distrib 5.5.24, for debian-linux-gnu (i686)
--
-- Host: localhost    Database: tesi
-- ------------------------------------------------------
-- Server version   5.5.24-0ubuntu0.12.04.1

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

--
-- Table structure for table `log`
--

DROP TABLE IF EXISTS `log`;
/*!40101 SET @saved_cs_client     = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `log` (
  `eid` int(11) NOT NULL AUTO_INCREMENT,
  `system` int(11) NOT NULL,
  `host` varchar(15) NOT NULL,
  `entity` int(30) NOT NULL,
  `key` varchar(40) NOT NULL,
  `event` varchar(5) NOT NULL,
  `timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`eid`),
  KEY `event` (`event`),
  CONSTRAINT `log_ibfk_1` FOREIGN KEY (`event`) REFERENCES `events` (`name`)
) ENGINE=InnoDB AUTO_INCREMENT=238 DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;

--
-- Dumping data for table `log`
--

LOCK TABLES `log` WRITE;
/*!40000 ALTER TABLE `log` DISABLE KEYS */;
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/*!40000 ALTER TABLE `log` ENABLE KEYS */;

2 番目のタプルに到達するとすぐに「死亡」します。私の貧しい英語で申し訳ありません、私はイタリア出身です。ご協力ありがとうございました！

score 2 · Accepted Answer

コードをデバッグできませんでした。:-(ただし、このコードを書き直しました。使用できるかどうかを確認してください。

#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>

/*
 * Apparently only interested in 4,5 & 6th comma separated values
 * strtok_r() should be preferred over strtok(); Windows MINGW doesn't have it
 */
int process_record(char *recordPtr/* and , your DataStructure Ptr if necessary */)
{
    unsigned count;
    char* fieldPtr = NULL;

    fprintf(stderr, "\nFields :");
    for (count = 1; NULL != (fieldPtr = strtok_r(NULL, ",", &recordPtr)); count++)
    {

        if (count > 3 && count < 7)
        {// required fields range

            /*TODO Trim unwanted characters */

            switch (count)
            {

            case 4: // copy to relevant DS
                break;
            case 5: // copy to relevant DS
                break;
            case 6: // copy to relevant DS
                break;
            }

            fprintf(stderr, "\t %s", fieldPtr);
        }

    }

    return 0;
}



int main(int argc, char* argv[])
{
    int status;
    unsigned count;
    unsigned readBytes = 0;
    struct stat fStat;
    unsigned fileSize ;
     FILE* hFile;
    char*   fileData = NULL;
    char* dataPtr =NULL;
    char* recordPtr = NULL;

    fprintf (stderr, "\n");
    if (argc != 2)
    {
        fprintf(stderr, "\nERROR: Only <filename> required");
        return -1;
    }

    /*
     * Get the file size for Memory Load
     */
    status = stat(argv[1], &fStat);
    if (status < 0) {
        fprintf(stderr, "\nERROR: Line[%d] ErroNo[%d]", __LINE__, errno);
        return -2;
    }

    fileSize = fStat.st_size;
    fprintf (stderr, "\nDump File size[%u]", fileSize);

    /*
     * Allocate sufficient memory to load file data on to memory
     */
    fileData = (char*) malloc (sizeof(char) * fileSize);
    if (NULL == fileData) {
        fprintf(stderr, "\nERROR: Allocating memory");
        return -3;
    }

    /* Open file and read data on to memory
     */
    hFile = fopen( argv[1], "r");        //opening the file in "read-only" mode
    if (hFile == NULL)
    {
        fprintf(stderr, "ERROR: Opening file[%s] ErroNo[%d]\n", argv[1], errno);
        return -4;     //error opening the file
    }
    /* assuming file will be read within 3 attempts */
    for (status =0; fileSize != readBytes && status < 3; status ++) {
        readBytes += fread (fileData + readBytes, 1, fileSize - readBytes, hFile);
        fprintf (stderr, "\nData read Size [%u]", readBytes);
    }

    fclose (hFile);
    //fprintf (stderr, "\nNOTE: Data read[\n%s\n]", fileData);

    /*
     * Chunk it into manageable records
     */
    dataPtr = strstr (fileData, "VALUES (") + strlen ("VALUES ("); //handle error checks

    for(count =1; NULL != (recordPtr = strtok_r(NULL, "()", &dataPtr)); count ++) {

        if (strlen(recordPtr) > 1) { // NOTE: "," between each record will be tokenised
            //fprintf (stderr, "\nRecord[%d] : [%s]", count, recordPtr);

            /*  Process Record
             */
            process_record (recordPtr /* and , your DataStructure Ptr if necessary */);
        }
    }

    free (fileData);
    return 0;
}

sql - .sql ファイルの解析中の間違った出力

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