gistfile1.m

#import "NSString+Extras.h"
#include "markdown.h"
#include "html.h"
#include "buffer.h"

@implementation NSString (Extras)

- (BOOL)containsString:(NSString*)substring{  
  NSRange range = [[self lowercaseString] rangeOfString:[substring lowercaseString]];
  BOOL found = (range.location != NSNotFound);
  return found;
}

- (NSString *)toHtml{
  const char *prose = [self UTF8String];
  struct buf *ib = bufnew(strlen(prose));
  bufputs(ib, prose);
  
  struct buf *ob = bufnew(64);
  struct sd_callbacks callbacks;
  struct html_renderopt options;
  sdhtml_renderer(&callbacks, &options, 0);
  struct sd_markdown *markdown = sd_markdown_new(0, 16, &callbacks, &options);
  sd_markdown_render(ob, ib->data, ib->size, markdown);
  sd_markdown_free(markdown);
  
  NSString *markup = [NSString stringWithUTF8String:bufcstr(ob)];
  bufrelease(ib);
  bufrelease(ob);
  
  return markup;}

@end