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6b14d7faf0
This moves the path selection logic from individual programs to a new
diffcore transformer (diff-tree still needs to have its own for
performance reasons). Also the header printing code in diff-tree was
tweaked not to produce anything when pickaxe is in effect and there is
nothing interesting to report. An interesting example is the following
in the GIT archive itself:
$ git-whatchanged -p -C -S'or something in a real script'
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
64 lines
1.2 KiB
C
64 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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#include "delta.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->len;
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if (! strncmp(s->spec, name, len) &&
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len <= namelen &&
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(name[len] == 0 || name[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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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->one->path, spec, speccnt) ||
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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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