Can't find mistake -- 'segmentation fault' - in C
- by Mosh
Hello all!
I wrote this function but can't get on the problem that gives me 'segmentation fault' msg.
Thank you for any help guys !!
/*This function extract all header files in a *.c1 file*/
void includes_extractor(FILE *c1_fp, char *c1_file_name ,int c1_file_str_len )
{
int i=0;
FILE *c2_fp , *header_fp;
char ch, *c2_file_name,header_name[80]; /* we can assume line length 80 chars MAX*/
char inc_name[]="include";
char inc_chk[INCLUDE_LEN+1]; /*INCLUDE_LEN is defined | +1 for null*/
/* making the c2 file name */
c2_file_name=(char *) malloc ((c1_file_str_len)*sizeof(char));
if (c2_file_name == NULL)
{
printf("Out of memory !\n");
exit(0);
}
strcpy(c2_file_name , c1_file_name);
c2_file_name[c1_file_str_len-1] = '\0';
c2_file_name[c1_file_str_len-2] = '2';
/*Open source & destination files + ERR check */
if( !(c1_fp = fopen (c1_file_name,"r") ) )
{
fprintf(stderr,"\ncannot open *.c1 file !\n");
exit(0);
}
if( !(c2_fp = fopen (c2_file_name,"w+") ) )
{
fprintf(stderr,"\ncannot open *.c2 file !\n");
exit(0);
}
/*next code lines are copy char by char from c1 to c2,
but if meet header file, copy its content */
ch=fgetc(c1_fp);
while (!feof(c1_fp))
{
i=0; /*zero i */
if (ch == '#') /*potential #include case*/
{
fgets(inc_chk, INCLUDE_LEN+1, c1_fp); /*8 places for "include" + null*/
if(strcmp(inc_chk,inc_name)==0) /*case #include*/
{
ch=fgetc(c1_fp);
while(ch==' ') /* stop when head with a '<' or '"' */
{
ch=fgetc(c1_fp);
} /*while(2)*/
ch=fgetc(c1_fp); /*start read header file name*/
while((ch!='"') || (ch!='>')) /*until we get the end of header name*/
{
header_name[i] = ch;
i++;
ch=fgetc(c1_fp);
}/*while(3)*/
header_name[i]='\0'; /*close the header_name array*/
if( !(header_fp = fopen (header_name,"r") ) ) /*open *.h for read + ERR chk*/
{
fprintf(stderr,"cannot open header file !\n");
exit(0);
}
while (!feof(header_fp)) /*copy header file content to *.c2 file*/
{
ch=fgetc(header_fp);
fputc(ch,c2_fp);
}/*while(4)*/
fclose(header_fp);
}
}/*frst if*/
else
{
fputc(ch,c2_fp);
}
ch=fgetc(c1_fp);
}/*while(1)*/
fclose(c1_fp);
fclose(c2_fp);
free (c2_file_name);
}
