#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
int file_create_write(char* location_filename, char* write_data, int size)
{
int file_descriptor;
char add_write[1024]={0};
int ret;
int iCnt;
printf("\n");
printf("[D] loca: %s\n", location_filename);
printf("[D] data: %s\n", write_data);
printf("[D] File Open start...\n");
#if 0
/* replace a data to file */
if( (file_descriptor = open(location_filename,O_CREAT|O_TRUNC|O_WRONLY,0644)) > 0 )
{
write(file_descriptor, write_data, size);
close(file_descriptor);
printf("[D] File close\n");
}
else
{
printf("File Open Error...\n");
return -1;
}
#endif
/* attach a data to file */
if( (file_descriptor = open(location_filename,O_CREAT|O_WRONLY|O_APPEND,0644)) > 0 )
{
printf("Open file_descriptor=%d\n",file_descriptor);
if( write(file_descriptor, write_data, size) == -1 )
{
printf("File write Error...\n");
return -3;
}
#if 0
printf("[ADD] Input data to file (nothing: Press Enter...) : ");
fgets(add_write, sizeof(add_write), stdin);
//scanf("%s",add_write);
for(iCnt=0; iCnt<strlen(add_write); iCnt++)
{
printf("[D] add_write[%d]=%c[0x%02x]\n",iCnt,add_write[iCnt],add_write[iCnt]);
}
if( *(add_write) == '\n' )
{
break;
}
else
{
write(file_descriptor, add_write, sizeof(add_write)-1);
for(iCnt=0; iCnt<sizeof(add_write); iCnt++)
{
add_write[iCnt]=0;
printf(".");
}
}
#endif
close(file_descriptor);
printf("[D] File close\n");
}
else
{
printf("File Open Error...\n");
return -2;
}
return 0;
}
int main(int argc, char* argv[])
{
int ret,iCnt = 0;
char file_location_name [1024] = {0};
char file_write [1024] = {0};
if( argc <= 1 || argc > 2 )
{
printf("Argument Error...\n");
printf("Using manual: ./(execution_file_name) (file_location)\n");
return -1;
}
while(1)
{
iCnt = 0;
printf("\n Input data to file : ");
fgets(file_write, sizeof(file_write), stdin);
//for(iCnt=0; iCnt<strlen(file_write); iCnt++)
while( *(file_write+iCnt) != '\n' )
{
printf("[D] file_write[%d]=%c[0x%02x]\n",iCnt,file_write[iCnt],file_write[iCnt]);
iCnt++;
}
if( file_write[0] == '\n' )
{
break;
}
/* file_write end is '\n' */
ret = file_create_write( argv[1], file_write, strlen(file_write) );
for(iCnt=0; iCnt<strlen(file_write); iCnt++)
{
file_write[iCnt]=0;
}
}
/* remove '\n' */
//ret = file_create_write( file_location_name, file_write, strlen(file_write)-1);
printf("[D] File open return=%d\n", ret);
return 0;
}
BookManagement_Prog-master.zip
