best way to read a string

ok before you jump to give me a link to the faq's, check this out...

Reading a string from a file, have to stop when i get to a certain delimiter, can contain white space in string. What I have is this....

Code:

---


        int ch;
          int index = 0;
 
          while (( ch = fgetc( fp )) != delimeter && ch != '\n' && ch != EOF ) {
                  *(buffer + index) = (char)ch;
 
                  index++;
                  if ( index == max_buffer ) {
                          break;
                  }
          }

---

What i want is to do it with fscanf but i cant work out how to get it to keep reading past the whitespace and stop at the delimiter.

Code:

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????  fscanf( fp, "%s,", string );  //doesnt skip white space

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Any help would be great.



Edit: fixed up code sample

Have you looked into the %[ specifier?

Code:

---

/* file.txt
line.1 line_2 line~3
*/

#include <stdio.h>

void foo(const char *filename, int delimiter)
{
  FILE *file = fopen(filename, "r");
  if ( file )
  {
      char format[10], result[32];
      sprintf(format, "%%%d[^%c]", (int)(sizeof result - 1), delimiter);
      printf("format = \"%s\"\n", format);
      if ( fscanf(file, format, result) == 1 )
      {
        printf("result>>\n%s\n<<\n", result);
      }
  }
  else
  {
      perror(filename);
  }
}

int main (void)
{
  foo("file.txt", '_');
  return 0;
}

/* my output
format = "%31[^_]"
result>>
line.1 line
<<
*/

---

will do, thankyou

okay baffled! Based on the man page i figured this should work...

Code:

---

#define MAX_TK1 10
 void test_scanf( void )
 {
    int i;
    char format[BUFSIZ];
    char buffer[] = "s3328,24";
    char token1[MAX_TK1];
    int token2;
 
 
    sprintf( format, "%%%d[^,]s%%*c%%d", MAX_TK1 - 1 );
    printf( "format: `%s'", format );
 
    sscanf( buffer, format, token1, &token2 );
 
    printf( "test: %s %d\n", token1, token2 );
 
    return;
 }

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but it only copies the first token but not the second. I just cant figure out the correct syntax!

Code:

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sprintf( format, "%%%d[^,]s%%*c%%d", MAX_TK1 - 1 );

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Remove the s.