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7e4a2a8483
Avoid asking for zero bytes when that change simplifies overall logic. Later we would change the wrapper to ask for 1 byte on platforms that return NULL for zero byte request. Signed-off-by: Junio C Hamano <junkio@cox.net>
71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
/*
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* Copyright (C) 2005 Junio C Hamano
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*/
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#include "cache.h"
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#include "diff.h"
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#include "diffcore.h"
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struct path_spec {
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const char *spec;
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int len;
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};
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static int matches_pathspec(const char *name, struct path_spec *s, int cnt)
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{
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int i;
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int namelen;
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if (cnt == 0)
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return 1;
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namelen = strlen(name);
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for (i = 0; i < cnt; i++) {
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int len = s[i].len;
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if (namelen < len)
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continue;
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if (memcmp(s[i].spec, name, len))
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continue;
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if (s[i].spec[len-1] == '/' ||
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name[len] == 0 ||
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name[len] == '/')
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return 1;
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if (!len)
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return 1;
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}
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return 0;
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}
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void diffcore_pathspec(const char **pathspec)
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{
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struct diff_queue_struct *q = &diff_queued_diff;
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int i, speccnt;
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struct diff_queue_struct outq;
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struct path_spec *spec;
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outq.queue = NULL;
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outq.nr = outq.alloc = 0;
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for (i = 0; pathspec[i]; i++)
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;
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speccnt = i;
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if (!speccnt)
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return;
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spec = xmalloc(sizeof(*spec) * speccnt);
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for (i = 0; pathspec[i]; i++) {
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spec[i].spec = pathspec[i];
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spec[i].len = strlen(pathspec[i]);
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}
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for (i = 0; i < q->nr; i++) {
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struct diff_filepair *p = q->queue[i];
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if (matches_pathspec(p->two->path, spec, speccnt))
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diff_q(&outq, p);
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else
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diff_free_filepair(p);
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}
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free(q->queue);
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*q = outq;
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return;
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}
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