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71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
/* This file is part of the software similarity tester SIM.
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Written by Dick Grune, Vrije Universiteit, Amsterdam.
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$Id: add_run.c,v 2.5 2001/11/08 12:30:28 dick Exp $
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*/
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#include <malloc.h>
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#include "sim.h"
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#include "runs.h"
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#include "percentages.h"
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#include "options.h"
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#include "error.h"
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#include "add_run.h"
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static void set_chunk(
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struct chunk *,
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struct text *,
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unsigned int,
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unsigned int
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);
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static void set_pos(
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struct position *,
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int,
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struct text *,
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unsigned int
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);
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void
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add_run(struct text *txt0, unsigned int i0,
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struct text *txt1, unsigned int i1,
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unsigned int size
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) {
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/* Adds the run of given size to our collection.
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*/
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register struct run *r = (struct run *)malloc(sizeof (struct run));
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if (!r) fatal("out of memory");
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set_chunk(&r->rn_cn0, txt0, i0 - txt0->tx_start, size);
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set_chunk(&r->rn_cn1, txt1, i1 - txt1->tx_start, size);
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r->rn_size = size;
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if (option_set('p') ? add_to_percentages(r) : add_to_runs(r)) {
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/* OK */
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}
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else fatal("out of memory");
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}
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static void
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set_chunk(struct chunk *cnk, struct text *txt,
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unsigned int start, unsigned int size
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) {
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/* Fill the chunk *cnk with info about the piece of text
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in txt starting at start extending over size tokens.
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*/
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cnk->ch_text = txt;
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set_pos(&cnk->ch_first, 0, txt, start);
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set_pos(&cnk->ch_last, 1, txt, start + size - 1);
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}
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static void
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set_pos(struct position *pos, int type, struct text *txt, unsigned int start) {
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/* Fill a single struct position */
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pos->ps_next = txt->tx_pos;
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txt->tx_pos = pos;
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pos->ps_type = type;
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pos->ps_tk_cnt = start;
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pos->ps_nl_cnt = -1; /* uninitialized */
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}
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