124 lines
3 KiB
C
124 lines
3 KiB
C
/* $NetBSD: cvsdiff2patch.c,v 1.1.1.1 2007/11/29 10:11:13 bjs Exp $ */
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/*
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* Copyright (c) 2003 Research Engineering Development Inc.
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* All rights reserved.
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* Author: Alfred Perlstein <alfred@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: cvsdiff2patch.c,v 1.1.1.1 2007/11/29 10:11:13 bjs Exp $
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*/
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/*
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* Convert crappy CVS diffs into something that patch(1) understands.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <err.h>
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char * xstrdup(const char *str);
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int fileline(const char *line, int ch);
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char *
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xstrdup(const char *str)
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{
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char *ret;
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ret = strdup(str);
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if (str == NULL)
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err(1, "strdup");
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return (ret);
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}
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int
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fileline(const char *line, int ch)
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{
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int i;
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for (i = 0; i < 3; i++) {
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if (line[i] != ch)
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return (0);
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}
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if (line[strlen(line) - 1] == ch) {
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return (0);
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}
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return (1);
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}
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int
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main(void)
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{
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char *line, *filepath;
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size_t len;
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const char *indexstr = "Index:";
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size_t indexlen;
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fprintf(stderr,
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"Cvsdiff2patch (c) 2003 Research Engineering Development\n");
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filepath = NULL;
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indexlen = strlen(indexstr);
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while ((line = fgetln(stdin, &len)) != NULL) {
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line[len - 1] = '\0';
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if (len > indexlen && strncmp(line, indexstr, indexlen) == 0) {
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char *p;
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p = memchr(line, ' ', len);
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if (p != NULL) {
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p++;
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free(filepath);
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filepath = xstrdup(p);
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}
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continue;
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}
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if (len > 4 &&
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(fileline(line, '-') ||
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fileline(line, '+') ||
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fileline(line, '*'))) {
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line[3] = '\0';
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printf("%s %s\n", line, filepath);
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continue;
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}
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line[len - 1] = '\n';
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switch (*line) {
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case ' ':
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case '+':
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case '-':
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case '!':
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case '@':
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case '*':
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fwrite(line, 1, len, stdout);
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break;
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default:
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#if 0
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printf("blah! ");
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fwrite(line, 1, len, stdout);
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#endif
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break;
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}
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}
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return (0);
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}
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