e72e12cc02
Fix a memory leak in "merge-file", we need to loop over the "mmfs" array and free() what we've got so far when we error out. As a result we can mark a test as passing with SANITIZE=leak using "TEST_PASSES_SANITIZE_LEAK=true". Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
125 lines
3.3 KiB
C
125 lines
3.3 KiB
C
#include "builtin.h"
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#include "cache.h"
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#include "config.h"
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#include "xdiff/xdiff.h"
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#include "xdiff-interface.h"
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#include "parse-options.h"
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static const char *const merge_file_usage[] = {
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N_("git merge-file [<options>] [-L <name1> [-L <orig> [-L <name2>]]] <file1> <orig-file> <file2>"),
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NULL
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};
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static int label_cb(const struct option *opt, const char *arg, int unset)
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{
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static int label_count = 0;
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const char **names = (const char **)opt->value;
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BUG_ON_OPT_NEG(unset);
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if (label_count >= 3)
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return error("too many labels on the command line");
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names[label_count++] = arg;
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return 0;
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}
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int cmd_merge_file(int argc, const char **argv, const char *prefix)
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{
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const char *names[3] = { 0 };
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mmfile_t mmfs[3] = { 0 };
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mmbuffer_t result = { 0 };
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xmparam_t xmp = { 0 };
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int ret = 0, i = 0, to_stdout = 0;
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int quiet = 0;
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struct option options[] = {
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OPT_BOOL('p', "stdout", &to_stdout, N_("send results to standard output")),
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OPT_SET_INT(0, "diff3", &xmp.style, N_("use a diff3 based merge"), XDL_MERGE_DIFF3),
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OPT_SET_INT(0, "zdiff3", &xmp.style, N_("use a zealous diff3 based merge"),
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XDL_MERGE_ZEALOUS_DIFF3),
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OPT_SET_INT(0, "ours", &xmp.favor, N_("for conflicts, use our version"),
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XDL_MERGE_FAVOR_OURS),
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OPT_SET_INT(0, "theirs", &xmp.favor, N_("for conflicts, use their version"),
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XDL_MERGE_FAVOR_THEIRS),
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OPT_SET_INT(0, "union", &xmp.favor, N_("for conflicts, use a union version"),
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XDL_MERGE_FAVOR_UNION),
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OPT_INTEGER(0, "marker-size", &xmp.marker_size,
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N_("for conflicts, use this marker size")),
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OPT__QUIET(&quiet, N_("do not warn about conflicts")),
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OPT_CALLBACK('L', NULL, names, N_("name"),
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N_("set labels for file1/orig-file/file2"), &label_cb),
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OPT_END(),
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};
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xmp.level = XDL_MERGE_ZEALOUS_ALNUM;
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xmp.style = 0;
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xmp.favor = 0;
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if (startup_info->have_repository) {
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/* Read the configuration file */
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git_config(git_xmerge_config, NULL);
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if (0 <= git_xmerge_style)
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xmp.style = git_xmerge_style;
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}
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argc = parse_options(argc, argv, prefix, options, merge_file_usage, 0);
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if (argc != 3)
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usage_with_options(merge_file_usage, options);
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if (quiet) {
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if (!freopen("/dev/null", "w", stderr))
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return error_errno("failed to redirect stderr to /dev/null");
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}
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for (i = 0; i < 3; i++) {
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char *fname;
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mmfile_t *mmf = mmfs + i;
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if (!names[i])
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names[i] = argv[i];
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fname = prefix_filename(prefix, argv[i]);
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if (read_mmfile(mmf, fname))
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ret = -1;
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else if (mmf->size > MAX_XDIFF_SIZE ||
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buffer_is_binary(mmf->ptr, mmf->size))
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ret = error("Cannot merge binary files: %s",
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argv[i]);
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free(fname);
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if (ret)
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goto cleanup;
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}
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xmp.ancestor = names[1];
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xmp.file1 = names[0];
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xmp.file2 = names[2];
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ret = xdl_merge(mmfs + 1, mmfs + 0, mmfs + 2, &xmp, &result);
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if (ret >= 0) {
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const char *filename = argv[0];
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char *fpath = prefix_filename(prefix, argv[0]);
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FILE *f = to_stdout ? stdout : fopen(fpath, "wb");
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if (!f)
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ret = error_errno("Could not open %s for writing",
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filename);
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else if (result.size &&
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fwrite(result.ptr, result.size, 1, f) != 1)
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ret = error_errno("Could not write to %s", filename);
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else if (fclose(f))
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ret = error_errno("Could not close %s", filename);
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free(result.ptr);
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free(fpath);
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}
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if (ret > 127)
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ret = 127;
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cleanup:
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for (i = 0; i < 3; i++)
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free(mmfs[i].ptr);
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return ret;
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}
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