From 8289b6209552a57c255561a2585d0edbe96d62d3 Mon Sep 17 00:00:00 2001 From: Pierre Habouzit Date: Mon, 24 Sep 2007 11:25:04 +0200 Subject: [PATCH] Make builtin-rerere use of strbuf nicer and more efficient. memory is now reused across hunks. Signed-off-by: Junio C Hamano --- builtin-rerere.c | 43 ++++++++++++++++++------------------------- 1 file changed, 18 insertions(+), 25 deletions(-) diff --git a/builtin-rerere.c b/builtin-rerere.c index 58288f61a..d331772e1 100644 --- a/builtin-rerere.c +++ b/builtin-rerere.c @@ -72,13 +72,9 @@ static int handle_file(const char *path, SHA_CTX ctx; char buf[1024]; int hunk = 0, hunk_no = 0; - struct strbuf minus, plus; - struct strbuf *one = &minus, *two = + + struct strbuf one, two; FILE *f = fopen(path, "r"); - FILE *out; - - strbuf_init(&minus, 0); - strbuf_init(&plus, 0); + FILE *out = NULL; if (!f) return error("Could not open %s", path); @@ -89,51 +85,48 @@ static int handle_file(const char *path, fclose(f); return error("Could not write %s", output); } - } else - out = NULL; + } if (sha1) SHA1_Init(&ctx); + strbuf_init(&one, 0); + strbuf_init(&two, 0); while (fgets(buf, sizeof(buf), f)) { if (!prefixcmp(buf, "<<<<<<< ")) hunk = 1; else if (!prefixcmp(buf, "=======")) hunk = 2; else if (!prefixcmp(buf, ">>>>>>> ")) { - int one_is_longer = (one->len > two->len); - int common_len = one_is_longer ? two->len : one->len; - int cmp = memcmp(one->buf, two->buf, common_len); + int cmp = strbuf_cmp(&one, &two); hunk_no++; hunk = 0; - if ((cmp > 0) || ((cmp == 0) && one_is_longer)) { - struct strbuf *swap = one; - one = two; - two = swap; + if (cmp > 0) { + strbuf_swap(&one, &two); } if (out) { fputs("<<<<<<<\n", out); - fwrite(one->buf, one->len, 1, out); + fwrite(one.buf, one.len, 1, out); fputs("=======\n", out); - fwrite(two->buf, two->len, 1, out); + fwrite(two.buf, two.len, 1, out); fputs(">>>>>>>\n", out); } if (sha1) { - SHA1_Update(&ctx, one->buf, one->len); - SHA1_Update(&ctx, "\0", 1); - SHA1_Update(&ctx, two->buf, two->len); - SHA1_Update(&ctx, "\0", 1); + SHA1_Update(&ctx, one.buf, one.len + 1); + SHA1_Update(&ctx, two.buf, two.len + 1); } - strbuf_release(one); - strbuf_release(two); + strbuf_reset(&one); + strbuf_reset(&two); } else if (hunk == 1) - strbuf_addstr(one, buf); + strbuf_addstr(&one, buf); else if (hunk == 2) - strbuf_addstr(two, buf); + strbuf_addstr(&two, buf); else if (out) fputs(buf, out); } + strbuf_release(&one); + strbuf_release(&two); fclose(f); if (out) -- 2.26.2