A C/C++ SCRIPT to change symlinks to url links.

#!/usr/local/bin/runc

// Licence: (c) rainbowsally 2013, released under GPL 3.0+.
// http://fsf.org
// No warrantees, no promises, except that YOU have the control.  
// That's the one promise.  Your machine should do what you say, 
// not other way around.

/* Changes symlinks to KDE (and other??) url files to put the full path
 * to the destination in your browser so you can move around more easily.
 * UN-improves new KDE (and other?) (mal)functions.
 */


#include <stdio.h> // printf()
#include <string.h> // str... funcs
#include <malloc.h> // malloc()/free()
#include <stdlib.h> // exit()
#include <runc.h>

int usage(int errcode)
{
  printf("input is the name of the symlink\n");
  return errcode;
}

void error(const char* errstr);

int main(int argc, char** argv)
{
  if(argc < 2)
    return usage(1);
  if(argc > 2)
    error("Woops! Too many args.\n"
          " *** Did you forget to quote a name containing spaces?\n");
  
  /////////////////////////////////////////
  // setup tools and get data
  int err;
  char* sbuf;
  char* url;
  char* name;
  char** str = slist_new();
  char* p;
  
  // name MAY contain spaces, so quote it in the pipeRead()
  name = argv[1];
  err = slist_pipeRead(&str, tmpstr(256, "ls -l \"%s\"", name));
  
  /////////////////////////////////////////
  // copy and parse string
  if(! slist_count(&str))
    return usage(1);
  
  // string: <name> -> <fullpath>
  sbuf = strdup(str[0]);
  url = strstr(sbuf, " -> ");
  if(!url)
    error(tmpstr(256, "\"%s\" is not a symlink", name));
  
  url += 4; // step past " -> "
  if(*url != '/')
     error("The url is not an absolute path. WOOPS!\n");
  
  // printf("name = %s, url = %s\n", name, url); getc(stdin);
  
  // write the desktop file replacing the symlink
  char* filedata = tmpstr(4096, 
          "/usr/bin/xdg-open\n"
          "[Desktop Entry]\n"
          "Icon=folder-remote\n"
          "Type=Link\n"
          "URL[$e]=%s/\n", url);
  
  // use slist to write the file
  slist_clear(&str);
  slist_append(&str, filedata);
  err = system(tmpstr(256, "rm -f \"%s\"", name));
  if(err)
    error("Can't remove existing symlink for some reason???\n");
  
  slist_fileWrite(&str, name);
  
  slist_delete(&str);
  free(sbuf);
  return 0;
}

void error(const char* errstr)
{
  fprintf(stderr, "%s\n", errstr);
  exit(1);
}