chgcase.c

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <case.h>
#include <err.h>

#define MAX_STR_LEN 64
#define NUM_STRS 6

#define STR0 "this string should NEVER show up"
#define STR1 ""
#define STR2 "az3o%\tW@^#\\\n\r[]{}|\() '\""
#define STR3 "az3o%\tw@^#\\\n\r[]{}|\() '\""
#define STR4 "AZ3O%\tW@^#\\\n\r[]{}|\() '\""
#define STR5 "AZ3O%\tw@^#\\\n\r[]{}|\() '\""


int
main(int argc, char **argv){
  int cmp;
  char *n1 = NULL;
  char *n2 = NULL;

  char s1[MAX_STR_LEN];
  char s2[MAX_STR_LEN];
  
  char strs[NUM_STRS][MAX_STR_LEN] = { STR0,
				       STR1,
				       STR2,
				       STR3,
				       STR4,
                                       STR5};

  if(argc < 2 || 
     3 == argc ||
     argc > 4 || 
     ( strcmp(argv[1],"lcase") && 
       strcmp(argv[1],"ucase") && 
       strcmp(argv[1],"strcmp_nocase") 
       ))
    {
      /*printf("INVALID PARAMETERS to chgCase\n"); */
      exit(1);
    }
  

  if(2 == argc){
    if(0 == strcmp(argv[1],"ucase")){
      ucase(n1);
    }else if(0 ==strcmp(argv[1],"lcase")){
      lcase(n1);
    }else{
      strcmp_nocase(n1,n2);
    }
    /*
      if we're still alive we obviously didn't segfault
    */
    exit(0);
  }

  if(4 == argc){

    if( 0 >= atoi(argv[2]) ||
	atoi(argv[2]) >= NUM_STRS ||
	0 >= atoi(argv[3]) ||
	atoi(argv[3]) >= NUM_STRS){
      E_INFO("INVALID PARAMS TO chkCase\n");
      exit(1);
    }

    strcpy(s1, strs[ atoi(argv[2]) ] );
    strcpy(s2, strs[ atoi(argv[3]) ] );
        
    if(0 == strcmp(argv[1],"ucase")){
      ucase(s1);
      cmp = strcmp(s1, s2);
    }else if(0 == strcmp(argv[1],"lcase")){
      lcase(s1);
      cmp = strcmp(s1, s2);
    }else{
      cmp = strcmp_nocase(s1, s2);
    }

    /*    E_INFO("Value of cmp %d\n", cmp);*/
    if(0 != cmp){
      E_FATAL("test failed\nstr1:|%s|\nstr2:|%s|\n", s1, s2);
    }

    return (cmp != 0);
  }

  /*somehow we got here and we shouldn't have */
 
 exit(1);
}