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Full Discussion: C++ > check if a file contains a word...
Top Forums Programming C++ > check if a file contains a word... Post 302431741 by carilda on Tuesday 22nd of June 2010 10:42:23 PM
Old 06-22-2010
Where do I begin?
Short answer:

grep permitted /home/user/.config/Home/unkilled.txt && <do stuff if there>

If you are constrained to do this in C++ then you shouldn't mix C and C++ headers and types.

Code:
#include <ifstream>
#include <string>

...

ifstream fin("/.config/Home/unkilled.txt");
string s;
bool permitted = false;

while (getline(fin,s)) {
    if (s.find("permitted") != string::npos) {
        permitted = true;
        break;
    }
}
if (permitted) {
  ... 
}
else {
 ...
}

Error 1 - it's trying to use the C getline() but the args are wrong.
Error 2 - trying to use a string member on a char array
Error 3 - again, it's a C file but you're using C++ close().

Excellent reference (I wouldn't leave home without it):

C++ Reference [C++ Reference]
 

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LEARN ABOUT CENTOS

word-list-compress

WORD-LIST-COMPRESS(1)					 Aspell Abbreviated User's Manual				     WORD-LIST-COMPRESS(1)

NAME

       word-list-compress - word list compressor/decompressor for GNU Aspell

SYNOPSIS

       word-list-compress c[ompress] | d[ecompress]

DESCRIPTION

       word-list-compress compresses or decompresses sorted word lists for use with the GNU Aspell spell checker.

COMMANDS

       -c, c, compress
	      compress the plain text word list read from standard input.

       -d, d, decompress
	      decompress the compressed word list read from standard input.

EXAMPLES

       Here are a few examples of how you can use word-list-compress

       word-list-compress d <wordlist.cwl >wordlist.txt
	      Decompress file wordlist.cwl to text file wordlist.txt

       word-list-compress c <wordlist.wl >wordlist.cwl 2>errors.txt
	      Compress wordlist.wl to wordlist.cwl and send any error messages to a text file named errors.txt

       LC_COLLATE=C sort -u <wordlist.txt | word-list-compress c >wordlist.cwl
	      Sort a word list, then pipe it to word-list-compress to create a compressed binary wordlist.cwl file.

       word-list-compress d <words.cwl | aspell create master ./words.rws
	      Decompress a wordlist, then pipe it to aspell(1) to create a spelling list.  Please check the aspell(1) info manual for proper usage
	      and options.

TIPS

       Word-list-compress is best used with sorted word list type files.  It is not a general purpose  compression  program  since  the  resulting
       files may actually increase in size.

       Word-list-compress  accepts  up to 255 text characters in the range of {0x21...0xFF}. If your word list requires a larger character set for
       certain languages or longer length for multi-word, scientific, medical, technical or other use, then it is recommended  that  you  compress
       your word list using prezip-bin(1)

DIAGNOSTICS

       Word-list-compress  normally exits with a return code of 0. If it encounters an error, a message is sent to standard error output (stderr),
       and word-list-compress exits with a non-zero return value.  Error messages are listed below:

       (display help/usage message)
	      Unknown command given on the command line so word-list-compress displays a usage message to standard error output.

       Corrupt Input
	      This is only for the decompression command d.  The input file is of an unknown format or the input file/stream  is  corrupted.   You
	      may  have  some valid output, but word-list-compress could not complete the process.  If the input file is a compressed wordlist but
	      you have no output file, then it may be a newer prezip-bin(1) version of compressed file, if so, try  decompressing  the	file  with
	      prezip-bin(1) instead.

       Output Data Error
	      The output is full, write protected, or has an error and can no longer be written to.

SEE ALSO

       aspell(1), prezip-bin(1), run-with-aspell(1)

       Aspell is fully documented in its Texinfo manual.  See the `aspell' entry in info for more complete documentation.

REPORTING BUGS

       For help, see the Aspell homepage at <http://aspell.net> and send bug reports/comments to the Aspell user list at the above address.

AUTHOR

       This manual page was written by Aaron Lehmann <aaronl@vitelus.com>, Brian Nelson <pyro@debian.org> and Jose Da Silva <digital@joescat.com>.

GNU
								    2005-09-05						     WORD-LIST-COMPRESS(1)
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