From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bo Yang Subject: [WIP PATCH 09/22] Print the line log Date: Sat, 24 Jul 2010 23:13:41 +0800 Message-ID: <1279984434-28933-10-git-send-email-struggleyb.nku@gmail.com> References: <1279984434-28933-1-git-send-email-struggleyb.nku@gmail.com> To: git@vger.kernel.org X-From: git-owner@vger.kernel.org Sat Jul 24 17:15:14 2010 Return-path: Envelope-to: gcvg-git-2@lo.gmane.org Received: from vger.kernel.org ([209.132.180.67]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1OcgRW-0001lN-37 for gcvg-git-2@lo.gmane.org; Sat, 24 Jul 2010 17:15:14 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755992Ab0GXPPA (ORCPT ); Sat, 24 Jul 2010 11:15:00 -0400 Received: from mail-pw0-f46.google.com ([209.85.160.46]:58504 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755553Ab0GXPO6 (ORCPT ); Sat, 24 Jul 2010 11:14:58 -0400 Received: by mail-pw0-f46.google.com with SMTP id 5so3932862pwi.19 for ; Sat, 24 Jul 2010 08:14:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:subject:date :message-id:x-mailer:in-reply-to:references; bh=50syb3RN8xroBPssI9T+CGlD9u2PDX3ZAIUmSZ6zuvc=; b=TRG7qVRLHBqCBJb39nUyEge8z09gBEAX6xazl0Sl0k5v7AaihfVFOoilY07Rdjv6JP K/PWR1gcgNglgCNFZ2W6q8PggsbtQLaXOO6GNjuHOoYOwmNVJvaiTVlmTcuAnghBkE51 /V1R3If/h+FZs4rk0qlpv59pCMhbiTb3YOcYU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:message-id:x-mailer:in-reply-to:references; b=dCxZkEh3UHkPixzuLGAASRRtrrh81fVGQRappvAH0fheUYscSpSQqSWvdGhqLSDZsu /ghjbYuZuSxya43/p1LfsMyoqBJcEJYXh9ec3tBiJWe3kVTjWPbL8zX+Xxv6VewzhSm8 EyLVYTYKxNffFhMIGi/99RBb5GnyM3/Krh+PI= Received: by 10.142.127.9 with SMTP id z9mr5909682wfc.260.1279984497795; Sat, 24 Jul 2010 08:14:57 -0700 (PDT) Received: from localhost.localdomain ([58.68.143.121]) by mx.google.com with ESMTPS id w8sm1705169wfd.19.2010.07.24.08.14.54 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sat, 24 Jul 2010 08:14:57 -0700 (PDT) X-Mailer: git-send-email 1.7.2.rc3.80.g6f8ea9.dirty In-Reply-To: <1279984434-28933-1-git-send-email-struggleyb.nku@gmail.com> Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org Archived-At: 'struct line_chunk' is used to make sure each file is scanned only once when printing the lines. We track the starting line number and the offsets of all lines in the range in this struct. We use two functions from diff.c to generate meta info and hunk headers in the usual format. Signed-off-by: Bo Yang --- line.c | 241 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 241 insertions(+), 0 deletions(-) diff --git a/line.c b/line.c index 3593b33..bd63d99 100644 --- a/line.c +++ b/line.c @@ -991,3 +991,244 @@ static void assign_parents_range(struct rev_info *rev, struct commit *commit) } } +struct line_chunk { + int lone, ltwo; + const char *one, *two; + const char *one_end, *two_end; + struct diff_line_range *range; +}; + +static void flush_lines(struct diff_options *opt, const char **ptr, const char *end, + int slno, int elno, int *lno, const char *color, const char heading) +{ + const char *p = *ptr; + struct strbuf buf = STRBUF_INIT; + const char *reset; + + if (*color) + reset = diff_get_color_opt(opt, DIFF_RESET); + else + reset = ""; + + strbuf_addf(&buf, "%s%c", color, heading); + while (*ptr < end && *lno < slno) { + if (**ptr == '\n') { + (*lno)++; + if (*lno == slno) { + (*ptr)++; + break; + } + } + (*ptr)++; + } + assert(*ptr <= end); + p = *ptr; + + while (*ptr < end && *lno <= elno) { + if (**ptr == '\n') { + fprintf(opt->file, "%s", buf.buf); + if (*ptr - p) { + fwrite(p, *ptr - p, 1, opt->file); + } + fprintf(opt->file, "%s\n", reset); + p = *ptr + 1; + (*lno)++; + } + (*ptr)++; + } + if (*lno <= elno) { + fprintf(opt->file, "%s", buf.buf); + if (*ptr - p) { + fwrite(p, *ptr - p, 1, opt->file); + } + fprintf(opt->file, "%s\n", reset); + } + strbuf_release(&buf); +} + +static void diff_flush_range(struct diff_options *opt, struct line_chunk *chunk, + struct range *range) +{ + struct print_pair *pair = &range->pair; + const char *old = diff_get_color_opt(opt, DIFF_FILE_OLD); + const char *new = diff_get_color_opt(opt, DIFF_FILE_NEW); + int i, cur = range->start; + + for (i = 0; i < pair->nr; i++) { + struct print_range *pr = pair->ranges + i; + if (cur < pr->start) + flush_lines(opt, &chunk->two, chunk->two_end, + cur, pr->start - 1, &chunk->ltwo, "", ' '); + + if (!pr->line_added) + flush_lines(opt, &chunk->one, chunk->one_end, + pr->pstart, pr->pend, &chunk->lone, old, '-'); + flush_lines(opt, &chunk->two, chunk->two_end, + pr->start, pr->end, &chunk->ltwo, new, '+'); + + cur = pr->end + 1; + } + + if (cur <= range->end) { + flush_lines(opt, &chunk->two, chunk->two_end, + cur, range->end, &chunk->ltwo, "", ' '); + } +} + +static void diff_flush_chunks(struct diff_options *opt, struct line_chunk *chunk) +{ + struct diff_line_range *range = chunk->range; + const char *set = diff_get_color_opt(opt, DIFF_FRAGINFO); + const char *reset = diff_get_color_opt(opt, DIFF_RESET); + int i; + + for (i = 0; i < range->nr; i++) { + struct range *r = range->ranges + i; + long lenp = r->pend - r->pstart + 1, pstart = r->pstart; + long len = r->end - r->start + 1; + if (pstart == 0) + lenp = 0; + + fprintf(opt->file, "%s@@ -%ld,%ld +%ld,%ld @@%s\n", + set, pstart, lenp, r->start, len, reset); + + diff_flush_range(opt, chunk, r); + } +} + +static void diff_flush_filepair(struct rev_info *rev, struct diff_line_range *range) +{ + struct diff_options *opt = &rev->diffopt; + struct diff_filespec *one = range->prev, *two = range->spec; + struct diff_filepair p = {one, two, range->status, 0}; + struct strbuf header = STRBUF_INIT, meta = STRBUF_INIT; + const char *a_prefix, *b_prefix; + const char *name_a, *name_b, *a_one, *b_two; + const char *lbl[2]; + const char *set = diff_get_color_opt(opt, DIFF_METAINFO); + const char *reset = diff_get_color_opt(opt, DIFF_RESET); + struct line_chunk chunk; + int must_show_header; + + /* + * the ranges that touch no different file, in this case + * the line number will not change, and of course we have + * no sensible rang->pair since there is no diff run. + */ + if (one == NULL) { + return; + } + + if (range->status == DIFF_STATUS_DELETED) + die("We are following an nonexistent file, interesting!"); + + name_a = one->path; + name_b = two->path; + fill_metainfo(&meta, name_a, name_b, one, two, opt, &p, &must_show_header, + DIFF_OPT_TST(opt, COLOR_DIFF)); + + diff_set_mnemonic_prefix(opt, "a/", "b/"); + if (DIFF_OPT_TST(opt, REVERSE_DIFF)) { + a_prefix = opt->b_prefix; + b_prefix = opt->a_prefix; + } else { + a_prefix = opt->a_prefix; + b_prefix = opt->b_prefix; + } + + name_a = DIFF_FILE_VALID(one) ? name_a : name_b; + name_b = DIFF_FILE_VALID(two) ? name_b : name_a; + + a_one = quote_two(a_prefix, name_a + (*name_a == '/')); + b_two = quote_two(b_prefix, name_b + (*name_b == '/')); + lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; + lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; + strbuf_addf(&header, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); + if (lbl[0][0] == '/') { + strbuf_addf(&header, "%snew file mode %06o%s\n", set, two->mode, reset); + } else if (lbl[1][0] == '/') { + strbuf_addf(&header, "%sdeleted file mode %06o%s\n", set, one->mode, reset); + } else if (one->mode != two->mode) { + strbuf_addf(&header, "%sold mode %06o%s\n", set, one->mode, reset); + strbuf_addf(&header, "%snew mode %06o%s\n", set, two->mode, reset); + } + + fprintf(opt->file, "%s%s", header.buf, meta.buf); + strbuf_release(&meta); + strbuf_release(&header); + fprintf(opt->file, "%s--- %s%s\n", set, lbl[0], reset); + fprintf(opt->file, "%s+++ %s%s\n", set, lbl[1], reset); + free((void *)a_one); + free((void *)b_two); + + chunk.one = one->data; + chunk.one_end = one->data + one->size; + chunk.lone = 1; + chunk.two = two->data; + chunk.two_end = two->data + two->size; + chunk.ltwo = 1; + chunk.range = range; + diff_flush_chunks(&rev->diffopt, &chunk); +} + +#define EVIL_MERGE_STR "nontrivial merge found" +static void flush_nontrivial_merge(struct rev_info *rev, struct diff_line_range *range) +{ + struct diff_options *opt = &rev->diffopt; + const char *reset = diff_get_color_opt(opt, DIFF_RESET); + const char *frag = diff_get_color_opt(opt, DIFF_FRAGINFO); + const char *meta = diff_get_color_opt(opt, DIFF_METAINFO); + const char *new = diff_get_color_opt(opt, DIFF_FILE_NEW); + + fprintf(opt->file, "%s%s%s\n", meta, EVIL_MERGE_STR, reset); + + while (range) { + if (range->nr) { + int lno = 1; + const char *ptr = range->spec->data; + const char *end = range->spec->data + range->spec->size; + int i = 0; + fprintf(opt->file, "%s%s%s\n\n", meta, range->spec->path, reset); + for (; i < range->nr; i++) { + struct range *r = range->ranges + i; + fprintf(opt->file, "%s@@ %ld,%ld @@%s\n", frag, r->start, + r->end - r->start + 1, reset); + flush_lines(opt, &ptr, end, r->start, r->end, + &lno, new, ' '); + } + fprintf(opt->file, "\n"); + } + range = range->next; + } +} + +static void line_log_flush(struct rev_info *rev, struct commit *c) +{ + struct diff_line_range *range = lookup_line_range(rev, c); + struct diff_line_range *nontrivial = lookup_decoration(&rev->nontrivial_merge, &c->object); + struct log_info log; + + if (range == NULL) + return; + + log.commit = c; + log.parent = NULL; + rev->loginfo = &log; + show_log(rev); + rev->loginfo = NULL; + /* + * Add a new line after each commit message, of course we should + * add --graph alignment later when the patches comes to master. + */ + fprintf(rev->diffopt.file, "\n"); + + if (c->object.flags & EVIL_MERGE) + return flush_nontrivial_merge(rev, nontrivial); + + while (range) { + if (range->diff) + diff_flush_filepair(rev, range); + range = range->next; + } +} + -- 1.7.0.2.273.gc2413.dirty