ecos: packages/language/c/libc/current/src/string/strstr.cxx annotate

annotate packages/language/c/libc/current/src/string/strstr.cxx @ 66:bf00f99aec69 ecos-sw-2000-02-02

Merge from eCos master repository on 2000-02-02-19:16:44-GMT

author	jlarmour
date	Wed, 02 Feb 2000 19:57:02 +0000
parents	c38311975d4f
children

rev	line source
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	1 //===========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	2 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	3 // strstr.cxx
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	4 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	5 // ANSI standard strstr() routine
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	6 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	7 //===========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	8 //####COPYRIGHTBEGIN####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	9 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	10 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	11 // The contents of this file are subject to the Red Hat eCos Public License
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	12 // Version 1.1 (the "License"); you may not use this file except in
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	13 // compliance with the License. You may obtain a copy of the License at
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	14 // http://www.redhat.com/
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	15 //
66 bf00f99aec69 Merge from eCos master repository on 2000-02-02-19:16:44-GMT jlarmour parents: 64 diff changeset	16 // Software distributed under the License is distributed on an "AS IS"
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	18 // License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	19 // the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	20 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	21 // The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	22 // released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	23 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	24 // The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	25 // Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	27 // All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	28 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 2 diff changeset	29 //
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	30 //####COPYRIGHTEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	31 //===========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	32 //#####DESCRIPTIONBEGIN####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	33 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	34 // Author(s): jlarmour
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	35 // Contributors: jlarmour
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	36 // Date: 1998-02-13
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	37 // Purpose:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	38 // Description:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	39 // Usage:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	40 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	41 //####DESCRIPTIONEND####
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	42 //
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	43 //===========================================================================
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45 // CONFIGURATION
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	47 #include <pkgconf/libc.h> // Configuration header
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 // Include the C library?
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50 #ifdef CYGPKG_LIBC
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	51
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52 // INCLUDES
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54 #include <cyg/infra/cyg_type.h> // Common type definitions
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55 #include <cyg/infra/cyg_trac.h> // Tracing support
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56 #include <cyg/infra/cyg_ass.h> // Assertion support
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	57 #include <string.h> // Header for this file
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58 #include <stddef.h> // Compiler definitions such as size_t, NULL etc.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	59 #include "clibincl/stringsupp.hxx" // Useful string function support and
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	60 // prototypes
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62 // EXPORTED SYMBOLS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	63
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64 externC char *
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	65 strstr( const char s1, const char s2 ) CYGPRI_LIBC_WEAK_ALIAS("_strstr");
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	66
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67 // FUNCTIONS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	68
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	69 char *
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	70 _strstr( const char s1, const char s2 )
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	71 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	72 CYG_REPORT_FUNCNAMETYPE( "_strstr", "returning %08x" );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	73 CYG_REPORT_FUNCARG2( "s1=%08x, s2=%08x", s1, s2 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	74
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	75 CYG_CHECK_DATA_PTR( s1, "s1 is not a valid pointer!" );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	76 CYG_CHECK_DATA_PTR( s2, "s2 is not a valid pointer!" );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	77
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	78 if (*s1 == '\0')
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	79 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	80 if (*s2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	81 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	82 CYG_REPORT_RETVAL( NULL );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	83 return (char *) NULL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	84 } // if
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	85 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	86 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	87 CYG_REPORT_RETVAL( s1 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	88 return (char *) s1;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	89 } // else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	90 } // if
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	91
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	92 while (*s1)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	93 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	94 cyg_ucount32 i;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	95
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	96 for (i=0 ; ; i++)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	97 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	98 if (s2[i] == '\0')
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	99 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	100 CYG_REPORT_RETVAL( s1 );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	101 return (char *) s1;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	102 } // if
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104 if (s2[i] != s1[i])
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107 } // if
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108 } // for
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 s1++;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 } // while
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112 CYG_REPORT_RETVAL( NULL );
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 return (char *) NULL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 } // _strstr()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 #endif // ifdef CYGPKG_LIBC
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 // EOF strstr.cxx

Mercurial > ecos

annotate packages/language/c/libc/current/src/string/strstr.cxx @ 66:bf00f99aec69 ecos-sw-2000-02-02