/* detag.c
  written by Ben Fasenfest
  on: 11/18/96
  removes tags from HTML documents
  and either prints the result to the  screen or saves
  them to another file.
*/
 
#include<stdlib.h>
#include<stdio.h>
 
int mask(void);
 
FILE *infile=NULL;
FILE *outfile=NULL;
int isreturn=0;
int error=0;
 
int main(int argc, char * argv[])
{
int c;
char *inname=argv[1];
char *outname=argv[2];
 
printf("\nDETAG HTML converter\n\tcopyright 1996 by NebSoft, Inc.\nWritten by Ben Fasenfest\n\n");
if(argc==1)
      {
      printf("\nNo file specified\nPlease use the format\nstrip readfile [writefile]\n");
      error=1;
      }
if(error==0 && (infile = fopen (inname,"r+")) == NULL)
 {
 printf("\nError - - - File %s not found.",inname);
 error= 2;
 }
if(error == 0 && argc >2 && (outfile = fopen(outname,"w+"))==NULL)
 {
 printf("\nError - - - File %s can not be written to.",outname);
 error= 3;
 }
if(error==0)
{
while((c=getc(infile)) != EOF)
 {
 if(c=='<' && (c=mask())==0)
     continue;
 if(c=='\n')
     isreturn=1;
 else isreturn=0;
 if(argc>2)
     putc(c, outfile);
 else printf("%c",c);
 }
if(argc>2)
     printf("\nFile %s successfully detaged and saved as file %s\n",inname, outname);
}
fcloseall();
return error;
}
 
int mask()
{
 int c;
 char tag[3];
 
 char *tagpntr=tag;
 
 while((c=getc(infile))!=EOF && c!='>')
  {
  if(tagpntr==&tag[3])
     continue;
  *tagpntr=(char)c;
  tagpntr++;
  }
  /* following is neccesary to remove the next line characters at the end
  of a full line tag to prevent an unwanted blank line*/
 if(isreturn==1)
     {
     c=getc(infile);
     if(c!='\n')
          ungetc(c,infile);
     }
 *tagpntr=0;
 if(strcmp(tag,"p\0")==0)
     return 10;
 if(strcmp(tag,"li\0")==0)
     return 9;
 return 0;
}