mirror of
https://github.com/moparisthebest/curl
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812da4190f
If the precision is indeed shorter than the string, don't strlen() to find the end because that's not how the precision operator works. I also added a unit test for curl_msnprintf to make sure this works and that the fix doesn't a few other basic use cases. I found a POSIX compliance problem that I marked TODO in the unit test, and I figure we need to add more tests in the future. Reported-by: Török Edwin
92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curlcheck.h"
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#include "curl/mprintf.h"
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static CURLcode unit_setup( void ) {return CURLE_OK;}
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static void unit_stop( void ) {}
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UNITTEST_START
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int rc;
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char buf[3] = {'b', 'u', 'g'};
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const char *str="bug";
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int width = 3;
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char output[24];
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/*#define curl_msnprintf snprintf */
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/* without a trailing zero */
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rc = curl_msnprintf(output, 4, "%.*s", width, buf);
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fail_unless( rc == 3 , "return code should be 3" );
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fail_unless(!strcmp(output, "bug"), "wrong output");
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/* with a trailing zero */
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rc = curl_msnprintf(output, 4, "%.*s", width, str);
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fail_unless( rc == 3 , "return code should be 3" );
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fail_unless(!strcmp(output, "bug"), "wrong output");
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width = 2;
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/* one byte less */
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rc = curl_msnprintf(output, 4, "%.*s", width, buf);
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fail_unless( rc == 2 , "return code should be 2" );
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fail_unless(!strcmp(output, "bu"), "wrong output");
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/* string with larger precision */
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rc = curl_msnprintf(output, 8, "%.8s", str);
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fail_unless( rc == 3 , "return code should be 3" );
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fail_unless(!strcmp(output, "bug"), "wrong output");
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/* longer string with precision */
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rc = curl_msnprintf(output, 8, "%.3s", "0123456789");
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fail_unless( rc == 3 , "return code should be 3" );
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fail_unless(!strcmp(output, "012"), "wrong output");
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/* negative width */
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rc = curl_msnprintf(output, 8, "%-8s", str);
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fail_unless( rc == 8 , "return code should be 8" );
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fail_unless(!strcmp(output, "bug "), "wrong output");
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/* larger width that string length */
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rc = curl_msnprintf(output, 8, "%8s", str);
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fail_unless( rc == 8 , "return code should be 8" );
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fail_unless(!strcmp(output, " bu"), "wrong output");
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/* output a number in a limited output */
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rc = curl_msnprintf(output, 4, "%d", 10240);
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/* TODO: this should return 5 to be POSIX/snprintf compliant! */
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fail_unless( rc == 4 , "return code should be 4" );
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fail_unless(!strcmp(output, "102"), "wrong output");
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/* padded strings */
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rc = curl_msnprintf(output, 16, "%8s%8s", str, str);
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fail_unless( rc == 16 , "return code should be 16" );
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fail_unless(!strcmp(output, " bug bu"), "wrong output");
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/* padded numbers */
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rc = curl_msnprintf(output, 16, "%8d%8d", 1234, 5678);
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fail_unless( rc == 16 , "return code should be 16" );
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fail_unless(!strcmp(output, " 1234 567"), "wrong output");
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UNITTEST_STOP
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