63 lines
970 B
C
63 lines
970 B
C
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/* libstring - flex run-time string routines */
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/* $Header: /cvsroot/src/usr.bin/lex/lib/Attic/libstring.c,v 1.1 1993/12/06 19:26:05 jtc Exp $ */
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/* These routines exist only because it's a pain to portably include
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* <string.h>/<strings.h>, and the generated scanner needs access to
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* strcpy() to support yytext.
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*/
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extern int yy_strcmp();
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extern void yy_strcpy();
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extern int yy_strlen();
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int yy_strcmp( s1, s2 )
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const char *s1;
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const char *s2;
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{
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while ( *s1 && *s2 )
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{
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unsigned char uc1 = (unsigned char) *s1;
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unsigned char uc2 = (unsigned char) *s2;
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if ( uc1 > uc2 )
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return 1;
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else if ( uc1 < uc2 )
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return -1;
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++s1;
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++s2;
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}
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if ( *s1 )
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/* s1 is longer than s2, so s1 > s2 */
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return 1;
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else if ( *s2 )
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return -1;
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else
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return 0;
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}
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void yy_strcpy( s1, s2 )
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char *s1;
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const char *s2;
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{
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while ( (*(s1++) = *(s2++)) )
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;
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}
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int yy_strlen( s )
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const char* s;
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{
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int len = 0;
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while ( s[len] )
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++len;
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return len;
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}
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