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