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57 lines
1.3 KiB
57 lines
1.3 KiB
/* |
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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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static int contains(struct diff_filespec *one, |
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const char *needle, unsigned long len) |
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{ |
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unsigned long offset, sz; |
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const char *data; |
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if (diff_populate_filespec(one)) |
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return 0; |
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sz = one->size; |
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data = one->data; |
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for (offset = 0; offset + len <= sz; offset++) |
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if (!strncmp(needle, data + offset, len)) |
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return 1; |
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return 0; |
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} |
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void diff_pickaxe(const char *needle) |
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{ |
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struct diff_queue_struct *q = &diff_queued_diff; |
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unsigned long len = strlen(needle); |
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int i; |
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struct diff_queue_struct outq; |
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outq.queue = NULL; |
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outq.nr = outq.alloc = 0; |
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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 (!p->one->file_valid) { |
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if (!p->two->file_valid) |
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continue; /* ignore nonsense */ |
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/* created */ |
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if (contains(p->two, needle, len)) |
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diff_queue(&outq, p->one, p->two); |
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} |
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else if (!p->two->file_valid) { |
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if (contains(p->one, needle, len)) |
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diff_queue(&outq, p->one, p->two); |
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} |
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else if (contains(p->one, needle, len) != |
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contains(p->two, needle, len)) |
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diff_queue(&outq, p->one, p->two); |
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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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free(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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