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Commit | Line | Data |
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458b9450 | 1 | /* |
359fc2d2 | 2 | * Copyright (C) the libgit2 contributors. All rights reserved. |
458b9450 | 3 | * |
4 | * This file is part of libgit2, distributed under the GNU GPL v2 with | |
5 | * a Linking Exception. For full terms see the included COPYING file. | |
6 | */ | |
7 | ||
8 | #include "message.h" | |
9 | ||
10 | static size_t line_length_without_trailing_spaces(const char *line, size_t len) | |
11 | { | |
12 | while (len) { | |
13 | unsigned char c = line[len - 1]; | |
0f49200c | 14 | if (!git__isspace(c)) |
458b9450 | 15 | break; |
16 | len--; | |
17 | } | |
18 | ||
19 | return len; | |
20 | } | |
21 | ||
22 | /* Greatly inspired from git.git "stripspace" */ | |
23 | /* see https://github.com/git/git/blob/497215d8811ac7b8955693ceaad0899ecd894ed2/builtin/stripspace.c#L4-67 */ | |
49e369b2 | 24 | int git_message_prettify(git_buf *message_out, const char *message, int strip_comments, char comment_char) |
458b9450 | 25 | { |
fd5faae3 VM |
26 | const size_t message_len = strlen(message); |
27 | ||
458b9450 | 28 | int consecutive_empty_lines = 0; |
29 | size_t i, line_length, rtrimmed_line_length; | |
30 | char *next_newline; | |
31 | ||
e1d7f003 CMN |
32 | git_buf_sanitize(message_out); |
33 | ||
458b9450 | 34 | for (i = 0; i < strlen(message); i += line_length) { |
fd5faae3 VM |
35 | next_newline = memchr(message + i, '\n', message_len - i); |
36 | ||
37 | if (next_newline != NULL) { | |
38 | line_length = next_newline - (message + i) + 1; | |
39 | } else { | |
40 | line_length = message_len - i; | |
41 | } | |
458b9450 | 42 | |
49e369b2 | 43 | if (strip_comments && line_length && message[i] == comment_char) |
458b9450 | 44 | continue; |
45 | ||
46 | rtrimmed_line_length = line_length_without_trailing_spaces(message + i, line_length); | |
47 | ||
48 | if (!rtrimmed_line_length) { | |
49 | consecutive_empty_lines++; | |
50 | continue; | |
51 | } | |
52 | ||
53 | if (consecutive_empty_lines > 0 && message_out->size > 0) | |
b1e2ba27 | 54 | git_buf_putc(message_out, '\n'); |
458b9450 | 55 | |
56 | consecutive_empty_lines = 0; | |
57 | git_buf_put(message_out, message + i, rtrimmed_line_length); | |
58 | git_buf_putc(message_out, '\n'); | |
59 | } | |
60 | ||
b1e2ba27 | 61 | return git_buf_oom(message_out) ? -1 : 0; |
458b9450 | 62 | } |