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Diffstat (limited to 'Tools/android/flex-2.5.4a/ccl.c')
-rw-r--r-- | Tools/android/flex-2.5.4a/ccl.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/Tools/android/flex-2.5.4a/ccl.c b/Tools/android/flex-2.5.4a/ccl.c new file mode 100644 index 0000000..8697305 --- /dev/null +++ b/Tools/android/flex-2.5.4a/ccl.c @@ -0,0 +1,149 @@ +/* ccl - routines for character classes */ + +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Vern Paxson. + * + * The United States Government has rights in this work pursuant + * to contract no. DE-AC03-76SF00098 between the United States + * Department of Energy and the University of California. + * + * Redistribution and use in source and binary forms with or without + * modification are permitted provided that: (1) source distributions retain + * this entire copyright notice and comment, and (2) distributions including + * binaries display the following acknowledgement: ``This product includes + * software developed by the University of California, Berkeley and its + * contributors'' in the documentation or other materials provided with the + * distribution and in all advertising materials mentioning features or use + * of this software. Neither the name of the University nor the names of + * its contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +/* $Header: /home/daffy/u0/vern/flex/RCS/ccl.c,v 2.9 93/09/16 20:32:14 vern Exp $ */ + +#include "flexdef.h" + +/* ccladd - add a single character to a ccl */ + +void ccladd( cclp, ch ) +int cclp; +int ch; + { + int ind, len, newpos, i; + + check_char( ch ); + + len = ccllen[cclp]; + ind = cclmap[cclp]; + + /* check to see if the character is already in the ccl */ + + for ( i = 0; i < len; ++i ) + if ( ccltbl[ind + i] == ch ) + return; + + newpos = ind + len; + + if ( newpos >= current_max_ccl_tbl_size ) + { + current_max_ccl_tbl_size += MAX_CCL_TBL_SIZE_INCREMENT; + + ++num_reallocs; + + ccltbl = reallocate_Character_array( ccltbl, + current_max_ccl_tbl_size ); + } + + ccllen[cclp] = len + 1; + ccltbl[newpos] = ch; + } + + +/* cclinit - return an empty ccl */ + +int cclinit() + { + if ( ++lastccl >= current_maxccls ) + { + current_maxccls += MAX_CCLS_INCREMENT; + + ++num_reallocs; + + cclmap = reallocate_integer_array( cclmap, current_maxccls ); + ccllen = reallocate_integer_array( ccllen, current_maxccls ); + cclng = reallocate_integer_array( cclng, current_maxccls ); + } + + if ( lastccl == 1 ) + /* we're making the first ccl */ + cclmap[lastccl] = 0; + + else + /* The new pointer is just past the end of the last ccl. + * Since the cclmap points to the \first/ character of a + * ccl, adding the length of the ccl to the cclmap pointer + * will produce a cursor to the first free space. + */ + cclmap[lastccl] = cclmap[lastccl - 1] + ccllen[lastccl - 1]; + + ccllen[lastccl] = 0; + cclng[lastccl] = 0; /* ccl's start out life un-negated */ + + return lastccl; + } + + +/* cclnegate - negate the given ccl */ + +void cclnegate( cclp ) +int cclp; + { + cclng[cclp] = 1; + } + + +/* list_character_set - list the members of a set of characters in CCL form + * + * Writes to the given file a character-class representation of those + * characters present in the given CCL. A character is present if it + * has a non-zero value in the cset array. + */ + +void list_character_set( file, cset ) +FILE *file; +int cset[]; + { + register int i; + + putc( '[', file ); + + for ( i = 0; i < csize; ++i ) + { + if ( cset[i] ) + { + register int start_char = i; + + putc( ' ', file ); + + fputs( readable_form( i ), file ); + + while ( ++i < csize && cset[i] ) + ; + + if ( i - 1 > start_char ) + /* this was a run */ + fprintf( file, "-%s", readable_form( i - 1 ) ); + + putc( ' ', file ); + } + } + + putc( ']', file ); + } |