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c9ac9147cf
* argv.c: Fix comments. * calloc.c: Don't unnecessarily include "libiberty.h". (bzero): Add prototype. * floatformat.c: Include "ansidecl.h", rely on ANSI_PROTOTYPES. * getcwd.c (getcwd): Use standard definition to avoid conflicts with system headers. * hashtab.c (htab_traverse): Delete unused variables. * rename.c: Include "ansidecl.h". (rename): Use standard definition to avoid conflicts with system headers. * strsignal.c: Rely on ANSI_PROTOTYPES. * strstr.c: Check GNUC >= 2, not GNUC == 2. * vfprintf.c: Include "ansidecl.h", rely on ANSI_PROTOTYPES. * vprintf.c: Include "ansidecl.h" earlier, rely on ANSI_PROTOTYPES. * vsprintf.c: Include "ansidecl.h" earlier, rely on ANSI_PROTOTYPES and possibly include <stdarg.h>. * Makefile.in: Regenerate dependencies. From-SVN: r65659
44 lines
1011 B
C
44 lines
1011 B
C
/* Simple implementation of strstr for systems without it.
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This function is in the public domain. */
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/*
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@deftypefn Supplemental char* strstr (const char *@var{string}, const char *@var{sub})
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This function searches for the substring @var{sub} in the string
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@var{string}, not including the terminating null characters. A pointer
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to the first occurrence of @var{sub} is returned, or @code{NULL} if the
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substring is absent. If @var{sub} points to a string with zero
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length, the function returns @var{string}.
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@end deftypefn
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*/
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/* FIXME: The above description is ANSI compiliant. This routine has not
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been validated to comply with it. -fnf */
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char *
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strstr (s1, s2)
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char *s1, *s2;
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{
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register char *p = s1;
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extern char *strchr ();
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extern int strncmp ();
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#if __GNUC__ >= 2
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extern __SIZE_TYPE__ strlen (const char *);
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#endif
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register int len = strlen (s2);
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for (; (p = strchr (p, *s2)) != 0; p++)
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{
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if (strncmp (p, s2, len) == 0)
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{
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return (p);
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}
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}
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return (0);
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}
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