diff options
Diffstat (limited to 'examples/dict.c')
| -rw-r--r-- | examples/dict.c | 71 |
1 files changed, 32 insertions, 39 deletions
diff --git a/examples/dict.c b/examples/dict.c index 04db245..3ccc9a5 100644 --- a/examples/dict.c +++ b/examples/dict.c @@ -2,22 +2,7 @@ This file is part of the LZO real-time data compression library. - Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer All Rights Reserved. The LZO library is free software; you can redistribute it and/or @@ -62,7 +47,7 @@ static const char *progname = NULL; #define DICT_LEN 0xbfff static lzo_bytep dict; static lzo_uint dict_len = 0; -static lzo_uint32 dict_adler32; +static lzo_uint32_t dict_adler32; /************************************************************************* @@ -73,11 +58,11 @@ static lzo_uint total_n = 0; static lzo_uint total_c_len = 0; static lzo_uint total_d_len = 0; -static void print_file ( const char *name, lzo_uint d_len, lzo_uint c_len ) +static void print_info(const char *name, lzo_uint d_len, lzo_uint c_len) { double perc; - perc = (d_len > 0) ? c_len * 100.0 / d_len : 0; + perc = (d_len > 0) ? c_len * 100.0 / d_len : 0.0; printf(" | %-30s %9ld -> %9ld %7.2f%% |\n", name, (long) d_len, (long) c_len, perc); @@ -91,7 +76,7 @@ static void print_file ( const char *name, lzo_uint d_len, lzo_uint c_len ) // **************************************************************************/ -int do_file ( const char *in_name, int compression_level ) +static int do_file(const char *in_name, int compression_level) { int r; lzo_bytep in; @@ -108,9 +93,9 @@ int do_file ( const char *in_name, int compression_level ) * Step 1: open the input file */ fp = fopen(in_name,"rb"); - if (fp == 0) + if (fp == NULL) { - printf("%s: cannot open file %s\n", progname, in_name); + printf("%s: %s: cannot open file\n", progname, in_name); return 0; /* no error */ } fseek(fp, 0, SEEK_END); @@ -120,9 +105,15 @@ int do_file ( const char *in_name, int compression_level ) { printf("%s: %s: empty file -- skipping\n", progname, in_name); fclose(fp); fp = NULL; - return 0; + return 0; /* no error */ } in_len = (lzo_uint) l; + if ((long) in_len != l || l > 256L * 1024L * 1024L) + { + printf("%s: %s: file is too big -- skipping\n", progname, in_name); + fclose(fp); fp = NULL; + return 0; /* no error */ + } /* * Step 2: allocate compression buffers and read the file @@ -151,13 +142,13 @@ int do_file ( const char *in_name, int compression_level ) return 1; } - print_file(in_name,in_len,out_len); + print_info(in_name, in_len, out_len); /* * Step 4: decompress again, now going from 'out' to 'newb' */ new_len = in_len; - r = lzo1x_decompress_dict_safe(out,out_len,newb,&new_len,NULL,dict,dict_len); + r = lzo1x_decompress_dict_safe(out, out_len, newb, &new_len, NULL, dict, dict_len); if (r != LZO_E_OK) { /* this should NEVER happen */ @@ -168,7 +159,7 @@ int do_file ( const char *in_name, int compression_level ) /* * Step 5: verify decompression */ - if (new_len != in_len || lzo_memcmp(in,newb,in_len) != 0) + if (new_len != in_len || lzo_memcmp(in, newb, in_len) != 0) { /* this should NEVER happen */ printf("internal error - decompression data error\n"); @@ -191,7 +182,7 @@ int do_file ( const char *in_name, int compression_level ) int __lzo_cdecl_main main(int argc, char *argv[]) { int i = 1; - int r; + int r = 0; const char *dict_name; FILE *fp; time_t t_total; @@ -201,7 +192,7 @@ int __lzo_cdecl_main main(int argc, char *argv[]) printf("\nLZO real-time data compression library (v%s, %s).\n", lzo_version_string(), lzo_version_date()); - printf("Copyright (C) 1996-2011 Markus Franz Xaver Johannes Oberhumer\nAll Rights Reserved.\n\n"); + printf("Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer\nAll Rights Reserved.\n\n"); progname = argv[0]; @@ -243,7 +234,7 @@ int __lzo_cdecl_main main(int argc, char *argv[]) else { fp = fopen(dict_name,"rb"); - if (!fp) + if (fp == NULL) { printf("%s: cannot open dictionary file %s\n", progname, dict_name); exit(1); @@ -252,30 +243,32 @@ int __lzo_cdecl_main main(int argc, char *argv[]) fclose(fp); fp = NULL; } - dict_adler32 = lzo_adler32(0,NULL,0); - dict_adler32 = lzo_adler32(dict_adler32,dict,dict_len); + dict_adler32 = lzo_adler32(0, NULL, 0); + dict_adler32 = lzo_adler32(dict_adler32, dict, dict_len); printf("Using dictionary '%s', %ld bytes, ID 0x%08lx.\n", - dict_name, (long) dict_len, (long) dict_adler32); + dict_name, (long) dict_len, (unsigned long) dict_adler32); /* * Step 3: process files */ t_total = time(NULL); - for (r = 0; r == 0 && i < argc; i++) - r = do_file(argv[i], compression_level); + for ( ; i < argc; i++) { + if (do_file(argv[i], compression_level) != 0) { + r = 1; + break; + } + } t_total = time(NULL) - t_total; lzo_free(dict); if (total_n > 1) - print_file("***TOTALS***",total_d_len,total_c_len); + print_info("***TOTALS***", total_d_len, total_c_len); printf("Dictionary compression test %s, execution time %lu seconds.\n", - r == 0 ? "passed" : "FAILED", (unsigned long) t_total); + r == 0 ? "passed" : "FAILED", (unsigned long) t_total); return r; } -/* -vi:ts=4:et -*/ +/* vim:set ts=4 sw=4 et: */ |