thodg/libgit2/src/message.c

• Show log

  Commit

• Hash : 743a4b3b
  Author :
  Date : 2012-06-15T22:24:59
  

  message: Expose git_message_prettify()
  
  git_commit() and git_tag() no longer prettify the
  message by default. This has to be taken care of
  by the caller.
  
  This has the nice side effect of putting the
  caller in position to actually choose to strip
  the comments or not.
  

Download

• src/message.c

• /*
   * Copyright (C) 2009-2012 the libgit2 contributors
   *
   * This file is part of libgit2, distributed under the GNU GPL v2 with
   * a Linking Exception. For full terms see the included COPYING file.
   */
  
  #include "message.h"
  
  static size_t line_length_without_trailing_spaces(const char *line, size_t len)
  {
  	while (len) {
  		unsigned char c = line[len - 1];
  		if (!git__isspace(c))
  			break;
  		len--;
  	}
  
  	return len;
  }
  
  /* Greatly inspired from git.git "stripspace" */
  /* see https://github.com/git/git/blob/497215d8811ac7b8955693ceaad0899ecd894ed2/builtin/stripspace.c#L4-67 */
  int git_message__prettify(git_buf *message_out, const char *message, int strip_comments)
  {
  	const size_t message_len = strlen(message);
  
  	int consecutive_empty_lines = 0;
  	size_t i, line_length, rtrimmed_line_length;
  	char *next_newline;
  
  	for (i = 0; i < strlen(message); i += line_length) {
  		next_newline = memchr(message + i, '\n', message_len - i);
  
  		if (next_newline != NULL) {
  			line_length = next_newline - (message + i) + 1;
  		} else {
  			line_length = message_len - i;
  		}
  
  		if (strip_comments && line_length && message[i] == '#')
  			continue;
  
  		rtrimmed_line_length = line_length_without_trailing_spaces(message + i, line_length);
  
  		if (!rtrimmed_line_length) {
  			consecutive_empty_lines++;
  			continue;
  		}
  
  		if (consecutive_empty_lines > 0 && message_out->size > 0)
  			git_buf_putc(message_out, '\n');
  
  		consecutive_empty_lines = 0;
  		git_buf_put(message_out, message + i, rtrimmed_line_length);
  		git_buf_putc(message_out, '\n');
  	}
  
  	return git_buf_oom(message_out) ? -1 : 0;
  }
  
  int git_message_prettify(char *message_out, size_t buffer_size, const char *message, int strip_comments)
  {
  	git_buf buf = GIT_BUF_INIT;
  
  	if (strlen(message) + 1 > buffer_size) {	/* We have to account for a potentially missing \n */
  		giterr_set(GITERR_INVALID, "Buffer too short to hold the cleaned message");
  		return -1;
  	}
  
  	*message_out = '\0';
  
  	if (git_message__prettify(&buf, message, strip_comments) < 0) {
  		git_buf_free(&buf);
  		return -1;
  	}
  
  	git_buf_copy_cstr(message_out, buffer_size, &buf);
  	git_buf_free(&buf);
  
  	return 0;
  }
  

Download