381b851c9b
Earlier, it would error out while trying to read and/or writing them. Now, calling merge-file with empty files is neither interesting nor useful, but it is a bug that needed fixing. Noticed by Clemens Buchacher. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
#include "builtin.h"
|
|
#include "cache.h"
|
|
#include "xdiff/xdiff.h"
|
|
#include "xdiff-interface.h"
|
|
|
|
static const char merge_file_usage[] =
|
|
"git merge-file [-p | --stdout] [-q | --quiet] [-L name1 [-L orig [-L name2]]] file1 orig_file file2";
|
|
|
|
int cmd_merge_file(int argc, const char **argv, const char *prefix)
|
|
{
|
|
const char *names[3];
|
|
mmfile_t mmfs[3];
|
|
mmbuffer_t result = {NULL, 0};
|
|
xpparam_t xpp = {XDF_NEED_MINIMAL};
|
|
int ret = 0, i = 0, to_stdout = 0;
|
|
|
|
while (argc > 4) {
|
|
if (!strcmp(argv[1], "-L") && i < 3) {
|
|
names[i++] = argv[2];
|
|
argc--;
|
|
argv++;
|
|
} else if (!strcmp(argv[1], "-p") ||
|
|
!strcmp(argv[1], "--stdout"))
|
|
to_stdout = 1;
|
|
else if (!strcmp(argv[1], "-q") ||
|
|
!strcmp(argv[1], "--quiet"))
|
|
freopen("/dev/null", "w", stderr);
|
|
else
|
|
usage(merge_file_usage);
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if (argc != 4)
|
|
usage(merge_file_usage);
|
|
|
|
for (; i < 3; i++)
|
|
names[i] = argv[i + 1];
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
if (read_mmfile(mmfs + i, argv[i + 1]))
|
|
return -1;
|
|
if (buffer_is_binary(mmfs[i].ptr, mmfs[i].size))
|
|
return error("Cannot merge binary files: %s\n",
|
|
argv[i + 1]);
|
|
}
|
|
|
|
ret = xdl_merge(mmfs + 1, mmfs + 0, names[0], mmfs + 2, names[2],
|
|
&xpp, XDL_MERGE_ZEALOUS, &result);
|
|
|
|
for (i = 0; i < 3; i++)
|
|
free(mmfs[i].ptr);
|
|
|
|
if (ret >= 0) {
|
|
const char *filename = argv[1];
|
|
FILE *f = to_stdout ? stdout : fopen(filename, "wb");
|
|
|
|
if (!f)
|
|
ret = error("Could not open %s for writing", filename);
|
|
else if (result.size &&
|
|
fwrite(result.ptr, result.size, 1, f) != 1)
|
|
ret = error("Could not write to %s", filename);
|
|
else if (fclose(f))
|
|
ret = error("Could not close %s", filename);
|
|
free(result.ptr);
|
|
}
|
|
|
|
return ret;
|
|
}
|